地铁T型换乘车站结构抗震设计两种分析方法计算结果差异性对比分析

黄伟

Comparative Analysis of Different Calculation Results between Two Analytical Methods for Seismic Design of T-type Interchange Station Structure

HUANG Wei
摘要:
结合地铁抗震规范相关要求,以郑州地铁6号线龙湖北站T型换乘站为例,对比分析时程分析法和反应位移法在地铁T型换乘车站结构抗震设计计算中的差异情况。结果表明:T型换乘车站结构的开口断面和标准断面内主要部位的受力规律基本一致,但断面内两种分析方法计算结果之间表现为差异悬殊和结果相近并存的状态,差异程度因具体部位而不同;为提高T型车站结构的抗震设计的可靠性,应按照规范要求同时使用时程分析法和反应位移法对T型换乘车站结构进行计算;反应位移法对地铁车站T型换乘节点的抗震设计具有一定参考价值,实际设计时可根据断面不同部位以时程分析法为主、反应位移法为辅。
Abstracts:
Under the requirements of metro seismic design code, the T-type interchange station of Longhu North Station on Zhengzhou metro Line 6 is taken as the study case, the differences between time-history analysis method and response displacement method in seismic design calculation of the T-type station structure are compared and analyzed. Results show that the stress force law of the main parts in both open sections and standard sections of T-type interchange station structure acts generally the same, however the calculation results of the two analyzing methods in the sections display a simultaneous existence of disparity and similarity. The degree of difference depends on the specific location. In order to improve the reliability of the seismic design of T-type station structure, both methods should be used to calculate the station structure in accordance with the code requirements. The response displacement method provides certain level of reference value for the seismic design of T-type metro interchange station, while in practical design, depending on specific parts of the section, the time-history analysis method may serve as the main and the response displacement method the supplement.
引文 / Ref:
黄伟.地铁T型换乘车站结构抗震设计两种分析方法计算结果差异性对比分析[J].城市轨道交通研究,2020,23(7):96.
HUANG Wei.Comparative Analysis of Different Calculation Results between Two Analytical Methods for Seismic Design of T-type Interchange Station Structure[J].Urban mass transit,2020,23(7):96.
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