基于反应位移法的西安黄土地区地铁车站地震反应分析
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摘要
以西安黄土地区地质条件为背景,采用ANSYS有限元软件建立模型,将反应位移法理论应用到西安市典型地铁车站结构进行地震反应分析。计算结果表明:在E2地震作用下,车站结构最大层间相对变形为1/2 097,未超过1/550,车站结构中柱轴压比未超过0.85的限值,可以认为结构处于弹性工作阶段,构件截面及配筋均满足抗震设计要求;在E3地震作用下,车站结构最大层间相对变形为1/1 444,未超过1/250,可以认为车站结构局部处于弹塑性工作阶段。
In the background of the geological conditions of Xi'an loess region,using ANSYS finite element software to establish the model and applied the theory of response displacement method to the seismic response analysis of the typical structure of Xi'an subway station. The results show that: the station structure can be considered to be in the elastic stage,and the requirements of the member section and reinforcement for antiseismic calculation can be satisfied with the action of E2 earthquake based on the maximum relative deformation of the structure layer which is 1 /2 091 and it is less than 1 /550 and the axial compression ratio of the central pillar which does not exceed the limit value of 0. 85; Under earthquake action E3,the maximum relative deformation of the structure layer which is 1 /1 444 and it is less than 1 /250 show the local station structure is in the elastic-plastic stage.
In the background of the geological conditions of Xi'an loess region,using ANSYS finite element software to establish the model and applied the theory of response displacement method to the seismic response analysis of the typical structure of Xi'an subway station. The results show that: the station structure can be considered to be in the elastic stage,and the requirements of the member section and reinforcement for antiseismic calculation can be satisfied with the action of E2 earthquake based on the maximum relative deformation of the structure layer which is 1 /2 091 and it is less than 1 /550 and the axial compression ratio of the central pillar which does not exceed the limit value of 0. 85; Under earthquake action E3,the maximum relative deformation of the structure layer which is 1 /1 444 and it is less than 1 /250 show the local station structure is in the elastic-plastic stage.
引文
[1]熊娟,陈绍元,杨丹.基于反应位移法的地铁车站结构地震响应分析[J].中国水运,2014,14(2):113-114.
[2]贺万里.基于土-结构相互作用的地铁车站抗震的动力有限元响应分析[D].湖南:中南大学,2011.
[3]刘如山,胡少卿,石宏彬.地下结构抗震计算中拟静力法的地震荷载施加方法研究[J].岩土工程学报,2007,29(2):237-242.
[4]丁增志.地铁车站的抗震分析研究[J].四川建筑科学研究,2014,40(2):173-177.
[5]GB/50909—2014城市轨道交通结构抗震设计规范[S].
[2]贺万里.基于土-结构相互作用的地铁车站抗震的动力有限元响应分析[D].湖南:中南大学,2011.
[3]刘如山,胡少卿,石宏彬.地下结构抗震计算中拟静力法的地震荷载施加方法研究[J].岩土工程学报,2007,29(2):237-242.
[4]丁增志.地铁车站的抗震分析研究[J].四川建筑科学研究,2014,40(2):173-177.
[5]GB/50909—2014城市轨道交通结构抗震设计规范[S].
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