高速铁路客站大跨站厅结构竖向多点地震响应研究

国巍;;余志武;;邬亮;

振动与冲击 ›› 2013, Vol. 32 ›› Issue (16) : 63-69.

PDF(3612 KB)
PDF(3612 KB)
振动与冲击 ›› 2013, Vol. 32 ›› Issue (16) : 63-69.
论文

高速铁路客站大跨站厅结构竖向多点地震响应研究

  • 国巍1, 2;, 余志武1, 2, 邬亮1, 2
作者信息 +

Study on Vertical Seismic Response of Long-Span Hall of High-Speed Railway Station under Multi-Point Earthquake Excitations

  • Wei Guo1,2, Zhi-wu Li1,2, Liang Wu1,2
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摘要

“房桥合一”是我国高速铁路客站建造中出现的一种新型结构形式,其兼具房屋和桥梁结构特征,轨道层列车线路的通行要求决定了上部高架站厅层具有较大跨度,而站厅结构竖向抗震性能往往是确保其地震安全的重要部分。鉴于此,本文首先阐述了SAP2000软件中位移模型的基本计算原理,并指出其一重要误差,继而参考天津西站建立了典型大跨站厅结构模型,对比研究了竖向多点一致、考虑行波效应竖向多点非一致地震激励下典型站厅结构动力响应特征。研究表明:依据位移模型直接计算结果来获取不参与动力平衡方程的从属结构响应分量时可能存在明显误差;竖向多点非一致输入特征对高架站厅层的地震响应有着显著影响,在抗震设计和性能评估中均不可忽视此因素,同时给出了抗震设计建议。

Abstract

Integrated building-bridge structure is a new type of high-speed railway passenger station in China, which possesses both of building and bridge characteristic. As decided by traffic requirement of train line on rail floor, its elevated station hall which consists of concrete filled steel tubular column and truss beam are usually long-span. So the vertical seismic performance of station hall is often the weak link under earthquake. In view of this, firstly in this paper calculation mechanism and problems of displacement input model in SAP2000 software is described, and then Tianjin West Railway Station is referred to establish the typical station hall structure. Seismic response characteristics of typical station hall under uniform, multi-point time history excitations and random earthquake excitations by considering travelling wave effect are all studied. Research work shows that: utilizing direct response results calculated by displacement model to obtain belonging structural response which is not involved in the dynamic equilibrium equation may produce obvious error; multi-point input feature has a significant impact on vertical seismic response of elevated station hall, which should not be ignored in the seismic design and performance evaluation, and meanwhile appropriate seismic design recommendations are also given in this paper.

关键词

高速铁路客站 / 房桥合一 / 站厅结构 / 竖向地震 / 多点激励 / 抗震性能

Key words

high-speed railway station / integrated building-bridge structure / station hall / vertical earthquake / multi-point excitations / seismic performance

引用本文

导出引用
国巍;;余志武;;邬亮;. 高速铁路客站大跨站厅结构竖向多点地震响应研究[J]. 振动与冲击, 2013, 32(16): 63-69
Wei Guo;Zhi-wu Li;Liang Wu;. Study on Vertical Seismic Response of Long-Span Hall of High-Speed Railway Station under Multi-Point Earthquake Excitations[J]. Journal of Vibration and Shock, 2013, 32(16): 63-69

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