Two-dimensional full-field displacement reconstruction of lattice towers using data fusion method: Theoretical study and experimental validation
Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper prop...
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Gespeichert in:
| Autor*in: |
Zhang, Qing [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2023transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Transmission of feto-placental metabolic anomalies through paternal lineage - Capobianco, Evangelina ELSEVIER, 2022, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:182 ; year:2023 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.tws.2022.110189 |
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ELV059728329 |
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| 520 | |a Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. | ||
| 520 | |a Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. | ||
| 650 | 7 | |a Lattice tower |2 Elsevier | |
| 650 | 7 | |a Field measurements |2 Elsevier | |
| 650 | 7 | |a Data fusion |2 Elsevier | |
| 650 | 7 | |a Full-field displacement reconstruction |2 Elsevier | |
| 650 | 7 | |a Strain–displacement mapping method |2 Elsevier | |
| 700 | 1 | |a Fu, Xing |4 oth | |
| 700 | 1 | |a Ren, Liang |4 oth | |
| 700 | 1 | |a Li, Hong-Nan |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier Science |a Capobianco, Evangelina ELSEVIER |t Transmission of feto-placental metabolic anomalies through paternal lineage |d 2022 |g Amsterdam [u.a.] |w (DE-627)ELV007893337 |
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10.1016/j.tws.2022.110189 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001982.pica (DE-627)ELV059728329 (ELSEVIER)S0263-8231(22)00741-8 DE-627 ger DE-627 rakwb eng 610 VZ 44.92 bkl Zhang, Qing verfasserin aut Two-dimensional full-field displacement reconstruction of lattice towers using data fusion method: Theoretical study and experimental validation 2023transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. Lattice tower Elsevier Field measurements Elsevier Data fusion Elsevier Full-field displacement reconstruction Elsevier Strain–displacement mapping method Elsevier Fu, Xing oth Ren, Liang oth Li, Hong-Nan oth Enthalten in Elsevier Science Capobianco, Evangelina ELSEVIER Transmission of feto-placental metabolic anomalies through paternal lineage 2022 Amsterdam [u.a.] (DE-627)ELV007893337 volume:182 year:2023 pages:0 https://doi.org/10.1016/j.tws.2022.110189 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.92 Gynäkologie VZ AR 182 2023 0 |
| spelling |
10.1016/j.tws.2022.110189 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001982.pica (DE-627)ELV059728329 (ELSEVIER)S0263-8231(22)00741-8 DE-627 ger DE-627 rakwb eng 610 VZ 44.92 bkl Zhang, Qing verfasserin aut Two-dimensional full-field displacement reconstruction of lattice towers using data fusion method: Theoretical study and experimental validation 2023transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. Lattice tower Elsevier Field measurements Elsevier Data fusion Elsevier Full-field displacement reconstruction Elsevier Strain–displacement mapping method Elsevier Fu, Xing oth Ren, Liang oth Li, Hong-Nan oth Enthalten in Elsevier Science Capobianco, Evangelina ELSEVIER Transmission of feto-placental metabolic anomalies through paternal lineage 2022 Amsterdam [u.a.] (DE-627)ELV007893337 volume:182 year:2023 pages:0 https://doi.org/10.1016/j.tws.2022.110189 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.92 Gynäkologie VZ AR 182 2023 0 |
| allfields_unstemmed |
10.1016/j.tws.2022.110189 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001982.pica (DE-627)ELV059728329 (ELSEVIER)S0263-8231(22)00741-8 DE-627 ger DE-627 rakwb eng 610 VZ 44.92 bkl Zhang, Qing verfasserin aut Two-dimensional full-field displacement reconstruction of lattice towers using data fusion method: Theoretical study and experimental validation 2023transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. Lattice tower Elsevier Field measurements Elsevier Data fusion Elsevier Full-field displacement reconstruction Elsevier Strain–displacement mapping method Elsevier Fu, Xing oth Ren, Liang oth Li, Hong-Nan oth Enthalten in Elsevier Science Capobianco, Evangelina ELSEVIER Transmission of feto-placental metabolic anomalies through paternal lineage 2022 Amsterdam [u.a.] (DE-627)ELV007893337 volume:182 year:2023 pages:0 https://doi.org/10.1016/j.tws.2022.110189 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.92 Gynäkologie VZ AR 182 2023 0 |
| allfieldsGer |
10.1016/j.tws.2022.110189 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001982.pica (DE-627)ELV059728329 (ELSEVIER)S0263-8231(22)00741-8 DE-627 ger DE-627 rakwb eng 610 VZ 44.92 bkl Zhang, Qing verfasserin aut Two-dimensional full-field displacement reconstruction of lattice towers using data fusion method: Theoretical study and experimental validation 2023transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. Lattice tower Elsevier Field measurements Elsevier Data fusion Elsevier Full-field displacement reconstruction Elsevier Strain–displacement mapping method Elsevier Fu, Xing oth Ren, Liang oth Li, Hong-Nan oth Enthalten in Elsevier Science Capobianco, Evangelina ELSEVIER Transmission of feto-placental metabolic anomalies through paternal lineage 2022 Amsterdam [u.a.] (DE-627)ELV007893337 volume:182 year:2023 pages:0 https://doi.org/10.1016/j.tws.2022.110189 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.92 Gynäkologie VZ AR 182 2023 0 |
| allfieldsSound |
10.1016/j.tws.2022.110189 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001982.pica (DE-627)ELV059728329 (ELSEVIER)S0263-8231(22)00741-8 DE-627 ger DE-627 rakwb eng 610 VZ 44.92 bkl Zhang, Qing verfasserin aut Two-dimensional full-field displacement reconstruction of lattice towers using data fusion method: Theoretical study and experimental validation 2023transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. Lattice tower Elsevier Field measurements Elsevier Data fusion Elsevier Full-field displacement reconstruction Elsevier Strain–displacement mapping method Elsevier Fu, Xing oth Ren, Liang oth Li, Hong-Nan oth Enthalten in Elsevier Science Capobianco, Evangelina ELSEVIER Transmission of feto-placental metabolic anomalies through paternal lineage 2022 Amsterdam [u.a.] (DE-627)ELV007893337 volume:182 year:2023 pages:0 https://doi.org/10.1016/j.tws.2022.110189 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.92 Gynäkologie VZ AR 182 2023 0 |
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However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value.</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. 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two-dimensional full-field displacement reconstruction of lattice towers using data fusion method: theoretical study and experimental validation |
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Two-dimensional full-field displacement reconstruction of lattice towers using data fusion method: Theoretical study and experimental validation |
| abstract |
Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. |
| abstractGer |
Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. |
| abstract_unstemmed |
Full-field displacement measurement of lattice tower is very important for assessing its service conditions. However, most of the existing measurement techniques or reconstruction methods only can obtain the point-type displacement or not suitable for lattice tower. To fill this gap, this paper proposes a data fusion method to reconstruct two-dimensional full-field displacement of lattice tower via strain and acceleration. First, lattice tower was simplified to thin-walled variable-section cantilever beam, then full-field displacement is calculated from the strain based on strain decomposition and modal conversion principles, and a novel data fusion algorithm is developed to fuse the strain-derived displacement and acceleration to acquire more accurate results. The effectiveness of the proposed method is verified by the numerical simulation of the transmission tower structure under wind loads, the results show that the full-field displacement can be calculated, and the reconstructed error of the highest point is only 1%. Then the parametric analysis illustrates that the proposed method has excellent performance under the influence of high sampling ratio or strong noise. The field measurements of the full-scale lattice tower are conducted to further verify the feasibility, and the results show that the reconstructed displacement value of the highest point differs from the observation value of the total station by a maximum of 5.4 mm, accounting for only 6% of the measured value. |
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