Seismic Response Analysis of Large Span Cable‐stayed Bridge

Hongyuan Xiong ； Yue Li

《World Scientific Research Journal》 8卷10期 (2022/10) Pp. 52-57

https://doi.org/10.6911/WSRJ.202210_8(10).0008

摘要

Because the cable‐stayed bridge has the characteristics of beautiful appearance, strong spanning ability, flexible span arrangement and less construction interference, and has good mechanical properties and economic indicators. Therefore, since the 1950s, modern cable‐stayed bridges have developed very rapidly, with increasing spans and continuous technological advancement. However, due to the large span and high cost of the cable‐stayed bridge, once it is damaged in the earthquake, it will cause serious loss of life and property. Therefore, it is necessary to analyze the seismic capacity of the long-span cable‐stayed bridge. After the seismic waves are transmitted to the site where the bridge is located, a multi‐degree‐of‐freedom vibration system will be formed in which all parts of the bridge body participate. The Shangdi cable‐stayed bridge in the Jingbao Expressway project is a five‐span continuous single‐pylon single‐cable plane prestressed concrete cable‐stayed bridge. The ANSYS finite element analysis software is used to analyze the bearing capacity of the bridge under various working conditions, and the bridge An earthquake response analysis was performed. In the later stage, a series of checking calculations were carried out on the main beam. The analysis and verification show that the design calculation method is correct and the internal force distribution is reasonable, which meets the requirements of the design task.

關鍵字

Cable‐stayed bridge ； Seismic Analysis ； Structural design ； Dynamic characteristic analysis

參考文獻

Javanmardi Ahad, Ghaedi Khaled, Ibrahim Zainah et al. Pounding mitigation of a short-span cable-stayed bridge using a new hybrid passive control system[J]. Engineering Analysis with Boundary Elements, 2022, 134.

Gou Hongye, Zhao Tianqi, Qin Shiqiang et al. In-situ testing and model updating of a long-span cable-stayed railway bridge with hybrid girders subjected to a running train[J]. Engineering Structures, 2022, 253.

Qin Shiqiang, Zhang Jiabin, Huang Chunlei et al. Fatigue performance evaluation of steel-UHPC composite orthotropic deck in a long-span cable-stayed bridge under in-service traffic[J]. Engineering Structures, 2022, 254.

Shi Zhou, Hu Hao, Li Jiaqi. Axis optimisation of arch-shaped pylons for high-speed railway cable-stayed bridges[J]. Engineering Structures, 2021, 227.

Wen Jianian, Han Qiang, Xie Yazhou et al. Performance-based seismic design and optimization of damper devices for cable-stayed bridge[J]. Engineering Structures, 2021, 237.