Seismic structure system and damping parameter selection of a single-pylon cable-stayed bridge
某独塔斜拉桥抗震结构体系与阻尼参数选取

摘要

国内独塔斜拉桥较多采用墩塔梁固结体系，较少采用半漂浮体系设计。本文基于某特大桥进行独塔半漂浮体系斜拉桥的结构体系分析和抗震分析研究，通过建立三维有限元模型进行非线性时程分析，寻找最优阻尼参数，给出约束体系分析结果以供参考。

Abstract

The consolidation system of pier tower beam is widely used in single-pylon cable-stayed bridges, and semi-floating systems are rarely constructed in China.In this paper, the structural system analysis and seismic analysis of the single tower semi floating cable-stayed bridge are carried out based on the Yangjiang port extra large bridge. The nonlinear time history analysis is carried out through the three-dimensional finite element model to find the optimal damping parameters, and the analysis results of the restraint system are given for reference.