地下结构横断面抗震设计的等代平面框架法  

Equivalent Plane Frame Method for the Aseismic Design of the Cross Section of Underground Structures

作　　者：安军海[1] 陶连金[1] 李积栋[1] 郭飞[1] 边金[1] 

机构地区：[1]北京工业大学城市与工程安全减灾省部共建教育部重点实验室,北京100124

出　　处：《现代隧道技术》2016年第5期43-50,共8页Modern Tunnelling Technology

基　　金：北京市教育委员会科技计划重点项目(KZ200910005009);国家自然科学基金项目(41572276);国家自然科学基金项目(41272337);北京市自然科学基金(L140004)

摘　　要：文章针对目前传统反应位移法所采用的"延米框架"模型进行了分析,指出其误差来源及应用局限。并借鉴板柱结构在水平作用下等代梁的物理概念及设计理论,提出了一种适用于存在纵梁-柱体系的地下结构抗震计算的方法——等代平面框架法。为验证等代平面框架法的有效性,基于实际工程案例,构造不同结构和土层参数进行内力计算,并将其计算结果与"延米框架"模型和动力时程法进行对比分析。结果表明,等代平面框架法的内力计算精度高,计算量少,对不同结构和土层条件的适用性好,且可应用于侧墙开孔部位的抗震设计,具有很强的实用性。The ＂Linear meter framework model＂ used in the traditional response displacement method is analyzed and its error sources and application restrictions are presented. Based on the physical concepts and design ideas of an equivalent beam of slab-column structures under the function of lateral loads, an equivalent plane frame method, which is suitable for aseismic calculations for the longitudinal beam-column system of an underground structure, isproposed. In order to verify the effectiveness of the equivalent plane frame method, calculations of the internal force of different structures and soil parameters are carried out and a comparison between the calculated results and the results of the ＂linear meter frame model＂ and dynamic time-history method is conducted using a specific engineer- ing case as an example. The calculation results show that the internal force calculation by the equivalent planar frame method is accurate and has fewer calculations; it can be applied to the aseismic design for an opening in the sidewall, which is highly applicable to various structures and soil conditions.

关 键 词：地下结构 抗震分析 等代平面框架法 反应位移法 开孔加强结构 

分 类 号：U452.28[建筑科学—桥梁与隧道工程]