Influence of structural design parameters on seismic performance of shaped single-tower cable-stayed bridges
The geometry and stress state of special-shaped cable-stayed bridges are complicated, so there is no uniform conclusion on their seismic performance and damage mechanisms under random seismic excitation. In light of this, taking a single cable plane curved inclined single tower cable-stayed bridge a...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2024-01-01
|
| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/20/e3sconf_arfee2024_02006.pdf |
| _version_ | 1797299491155476480 |
|---|---|
| author | Zhang Kai Xu Wei Xie Haihui Ye Musheng Zhang Haiyang Xuan Fei Wei Shijun |
| author_facet | Zhang Kai Xu Wei Xie Haihui Ye Musheng Zhang Haiyang Xuan Fei Wei Shijun |
| author_sort | Zhang Kai |
| collection | DOAJ |
| description | The geometry and stress state of special-shaped cable-stayed bridges are complicated, so there is no uniform conclusion on their seismic performance and damage mechanisms under random seismic excitation. In light of this, taking a single cable plane curved inclined single tower cable-stayed bridge as the background, this paper establishes a spatial finite element model and conducts structural dynamic characteristics and seismic response analysis. Based on this, taking the bending radius and tilt angle as design parameters, the sensitivity analysis of structural seismic response to design parameters is carried out. The analysis results show that the first 5 vibration modes of the bridge are mainly the lateral vibration of the tower and girder, as well as the vertical vibration of the girder. Besides, the vibration modes are dispersed, and there is no phenomenon where a certain vibration mode dominates.The seismic response of the middle part of the tower is subjected to a large bending moment under the action of seismic force. Sensitivity analysis of structural design parameters indicates that the tower tilt angle and radius of curvature affect the bending moment more than the axial force, and the seismic performance of bridge decreases with the increase of tower tilt angle. |
| first_indexed | 2024-03-07T22:50:26Z |
| format | Article |
| id | doaj.art-611da0f0bf32478ba566c520709e5466 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-03-07T22:50:26Z |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-611da0f0bf32478ba566c520709e54662024-02-23T10:20:29ZengEDP SciencesE3S Web of Conferences2267-12422024-01-014900200610.1051/e3sconf/202449002006e3sconf_arfee2024_02006Influence of structural design parameters on seismic performance of shaped single-tower cable-stayed bridgesZhang Kai0Xu Wei1Xie Haihui2Ye Musheng3Zhang Haiyang4Xuan Fei5Wei Shijun6Hefei Municipal Design Research Institute Co.,LtdHefei Municipal Design Research Institute Co.,LtdCollege of Civil Engineering, Hefei University of TechnologyAnhui Feixiang Engineering Management Co.Ltd.College of Civil Engineering, Hefei University of TechnologyAnhui Gourgen Traffic Construction Co.LtdAnhui Gourgen Traffic Construction Co.LtdThe geometry and stress state of special-shaped cable-stayed bridges are complicated, so there is no uniform conclusion on their seismic performance and damage mechanisms under random seismic excitation. In light of this, taking a single cable plane curved inclined single tower cable-stayed bridge as the background, this paper establishes a spatial finite element model and conducts structural dynamic characteristics and seismic response analysis. Based on this, taking the bending radius and tilt angle as design parameters, the sensitivity analysis of structural seismic response to design parameters is carried out. The analysis results show that the first 5 vibration modes of the bridge are mainly the lateral vibration of the tower and girder, as well as the vertical vibration of the girder. Besides, the vibration modes are dispersed, and there is no phenomenon where a certain vibration mode dominates.The seismic response of the middle part of the tower is subjected to a large bending moment under the action of seismic force. Sensitivity analysis of structural design parameters indicates that the tower tilt angle and radius of curvature affect the bending moment more than the axial force, and the seismic performance of bridge decreases with the increase of tower tilt angle.https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/20/e3sconf_arfee2024_02006.pdf |
| spellingShingle | Zhang Kai Xu Wei Xie Haihui Ye Musheng Zhang Haiyang Xuan Fei Wei Shijun Influence of structural design parameters on seismic performance of shaped single-tower cable-stayed bridges E3S Web of Conferences |
| title | Influence of structural design parameters on seismic performance of shaped single-tower cable-stayed bridges |
| title_full | Influence of structural design parameters on seismic performance of shaped single-tower cable-stayed bridges |
| title_fullStr | Influence of structural design parameters on seismic performance of shaped single-tower cable-stayed bridges |
| title_full_unstemmed | Influence of structural design parameters on seismic performance of shaped single-tower cable-stayed bridges |
| title_short | Influence of structural design parameters on seismic performance of shaped single-tower cable-stayed bridges |
| title_sort | influence of structural design parameters on seismic performance of shaped single tower cable stayed bridges |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/20/e3sconf_arfee2024_02006.pdf |
| work_keys_str_mv | AT zhangkai influenceofstructuraldesignparametersonseismicperformanceofshapedsingletowercablestayedbridges AT xuwei influenceofstructuraldesignparametersonseismicperformanceofshapedsingletowercablestayedbridges AT xiehaihui influenceofstructuraldesignparametersonseismicperformanceofshapedsingletowercablestayedbridges AT yemusheng influenceofstructuraldesignparametersonseismicperformanceofshapedsingletowercablestayedbridges AT zhanghaiyang influenceofstructuraldesignparametersonseismicperformanceofshapedsingletowercablestayedbridges AT xuanfei influenceofstructuraldesignparametersonseismicperformanceofshapedsingletowercablestayedbridges AT weishijun influenceofstructuraldesignparametersonseismicperformanceofshapedsingletowercablestayedbridges |