{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T03:20:54Z","timestamp":1774581654307,"version":"3.50.1"},"reference-count":56,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2024,6,21]],"date-time":"2024-06-21T00:00:00Z","timestamp":1718928000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100012546","name":"ChongQing Postdoctoral Science Foundation","doi-asserted-by":"publisher","award":["CSTB2022NSCQ-BHX0741"],"award-info":[{"award-number":["CSTB2022NSCQ-BHX0741"]}],"id":[{"id":"10.13039\/100012546","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100012546","name":"ChongQing Postdoctoral Science Foundation","doi-asserted-by":"publisher","award":["CSTB2023NSCQ-JQX0029"],"award-info":[{"award-number":["CSTB2023NSCQ-JQX0029"]}],"id":[{"id":"10.13039\/100012546","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100012546","name":"ChongQing Postdoctoral Science Foundation","doi-asserted-by":"publisher","award":["CSTB2022TIAD-KPX0205"],"award-info":[{"award-number":["CSTB2022TIAD-KPX0205"]}],"id":[{"id":"10.13039\/100012546","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100012546","name":"ChongQing Postdoctoral Science Foundation","doi-asserted-by":"publisher","award":["2023-ZL-03"],"award-info":[{"award-number":["2023-ZL-03"]}],"id":[{"id":"10.13039\/100012546","id-type":"DOI","asserted-by":"publisher"}]},{"name":"ChongQing Science Fund for Distinguished Young Scholars","award":["CSTB2022NSCQ-BHX0741"],"award-info":[{"award-number":["CSTB2022NSCQ-BHX0741"]}]},{"name":"ChongQing Science Fund for Distinguished Young Scholars","award":["CSTB2023NSCQ-JQX0029"],"award-info":[{"award-number":["CSTB2023NSCQ-JQX0029"]}]},{"name":"ChongQing Science Fund for Distinguished Young Scholars","award":["CSTB2022TIAD-KPX0205"],"award-info":[{"award-number":["CSTB2022TIAD-KPX0205"]}]},{"name":"ChongQing Science Fund for Distinguished Young Scholars","award":["2023-ZL-03"],"award-info":[{"award-number":["2023-ZL-03"]}]},{"name":"Chongqing Natural Science Foundation of China","award":["CSTB2022NSCQ-BHX0741"],"award-info":[{"award-number":["CSTB2022NSCQ-BHX0741"]}]},{"name":"Chongqing Natural Science Foundation of China","award":["CSTB2023NSCQ-JQX0029"],"award-info":[{"award-number":["CSTB2023NSCQ-JQX0029"]}]},{"name":"Chongqing Natural Science Foundation of China","award":["CSTB2022TIAD-KPX0205"],"award-info":[{"award-number":["CSTB2022TIAD-KPX0205"]}]},{"name":"Chongqing Natural Science Foundation of China","award":["2023-ZL-03"],"award-info":[{"award-number":["2023-ZL-03"]}]},{"name":"Science and Technology Project of Sichuan Provincial Transportation Department","award":["CSTB2022NSCQ-BHX0741"],"award-info":[{"award-number":["CSTB2022NSCQ-BHX0741"]}]},{"name":"Science and Technology Project of Sichuan Provincial Transportation Department","award":["CSTB2023NSCQ-JQX0029"],"award-info":[{"award-number":["CSTB2023NSCQ-JQX0029"]}]},{"name":"Science and Technology Project of Sichuan Provincial Transportation Department","award":["CSTB2022TIAD-KPX0205"],"award-info":[{"award-number":["CSTB2022TIAD-KPX0205"]}]},{"name":"Science and Technology Project of Sichuan Provincial Transportation Department","award":["2023-ZL-03"],"award-info":[{"award-number":["2023-ZL-03"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>In bridge structure monitoring and evaluation, deformation data serve as a crucial basis for assessing structural conditions. Different from discrete monitoring points, spatially continuous deformation modes provide a comprehensive understanding of deformation and potential information. Terrestrial laser scanning (TLS) is a three-dimensional deformation monitoring technique that has gained wide attention in recent years, demonstrating its potential in capturing structural deformation models. In this study, a TLS-based bridge deformation mode monitoring method is proposed, and a deformation mode calculation method combining sliding windows and surface fitting is developed, which is called the SWSF method for short. On the basis of the general characteristics of bridge structures, a deformation error model is established for the SWSF method, with a detailed quantitative analysis of each error component. The analysis results show that the deformation monitoring error of the SWSF method consists of four parts, which are related to the selection of the fitting function, the density of point clouds, the noise of point clouds, and the registration accuracy of point clouds. The error caused by point cloud noise is the main error component. Under the condition that the noise level of point clouds is determined, the calculation error of the SWSF method can be significantly reduced by increasing the number of points of point clouds in the sliding window. Then, deformation testing experiments were conducted under different measurement distances, proving that the proposed SWSF method can achieve a deformation monitoring accuracy of up to 0.1 mm. Finally, the proposed deformation mode monitoring method based on TLS and SWSF was tested on a railway bridge with a span of 65 m. The test results showed that in comparison with the commonly used total station method, the proposed method does not require any preset reflective markers, thereby improving the deformation monitoring accuracy from millimeter level to submillimeter level and transforming the discrete measurement point data form into spatially continuous deformation modes. Overall, this study introduces a new method for accurate deformation monitoring of bridges, demonstrating the significant potential for its application in health monitoring and damage diagnosis of bridge structures.<\/jats:p>","DOI":"10.3390\/rs16132263","type":"journal-article","created":{"date-parts":[[2024,6,21]],"date-time":"2024-06-21T08:50:08Z","timestamp":1718959808000},"page":"2263","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["High-Precision Monitoring Method for Bridge Deformation Measurement and Error Analysis Based on Terrestrial Laser Scanning"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7536-7753","authenticated-orcid":false,"given":"Yin","family":"Zhou","sequence":"first","affiliation":[{"name":"State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, China"}]},{"given":"Jinyu","family":"Zhu","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China"}]},{"given":"Lidu","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-8689-5761","authenticated-orcid":false,"given":"Guotao","family":"Hu","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China"}]},{"given":"Jingzhou","family":"Xin","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1130-3600","authenticated-orcid":false,"given":"Hong","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, China"}]},{"given":"Jun","family":"Yang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, China"}]}],"member":"1968","published-online":{"date-parts":[[2024,6,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"04015019","DOI":"10.1061\/(ASCE)BE.1943-5592.0000765","article-title":"Model Updating of Railway Bridge Using In Situ Dynamic Displacement Measurement under Trainloads","volume":"20","author":"Feng","year":"2015","journal-title":"J. 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