地铁隧道与人防地下室相互作用的地震反应分析  

Seismic response analysis considering interaction between subway tunnel and civil air defense basement

作　　者：毛昆明[1] 赵凯[2] 朱利明 左熹[1] 陈磊 MAO Kunming;ZHAO Kai;ZHU Liming;ZUO Xi;CHEN Lei(Architectural Engineering Institute,Jinling Institute of Technology,Nanjing 211169,China;Institute of Geotechnical Engineering,Nanjing University of Technology,Nanjing 210009,China;China United Engineering Corporation Limited,Hangzhou 310052,China)

机构地区：[1]金陵科技学院建筑工程学院,南京211169 [2]南京工业大学岩土工程研究所,南京210009 [3]中国联合工程有限公司,杭州310052

出　　处：《振动与冲击》2019年第5期243-250,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金(51408281;51608267);江苏省高校自然科学基金(18KJD560002);金陵科技学院博士科研启动基金(JIT-B-201331)

摘　　要：基于Abaqus软件64CPU显式并行计算集群平台,以南京地铁4号线鼓楼站附近的地下建筑结构为背景,建立了深软地基土-地铁隧道-人防地下室耦合的三维精细化非线性地震反应分析的有限元模型,数值模拟了其在近场汶川大地震清平波、远场大地震Mexico波和100 a超越概率3%的南京人工地震波作用下的地震反应。结果表明:"五心圆形"隧道拱肩及拱腰圆弧连接处附近的损伤值最大,塑性变形的产生导致结构相对位移曲线出现突变;人防地下室的顶底板、侧墙顶底部,尤其转弯处损伤程度最严重,其余部位则较为安全;人防地下室的相对位移曲线光滑,沿高度单调增加;相比隧道,虽然人防地下室局部区域的损伤值略大,但相对位移较小;人防地下室导致隧道的局部区域损伤值略有增大而相对位移大范围明显减小;隧道对人防地下室的影响无明显规律。Based on the software ABAQUS 64 CPU explicit parallel computing cluster platform,taking underground structures near Nanjing metro line 4 drum tower station as the background,a 3D refined finite element model was built for a deep soft soil-subway tunnel-civil air defense basement coupled system to numerically simulate its seismic responses under excitations of near-field Wenchuang earthquake Qingping wave,far-field Mexico one and Nanjing artificial seismic one with the exceedance probability of 3% within 100 years,respectively.The results showed that the damage value of the place near “penta-centric circle” tunnel’s spandrel and haunch arc joint is the maximum,plastic deformation produced causes sudden changes to appear on the structural relative displacement curve;the damage level is the most serious at roof and floor of basement,top and bottom of side wall,especially,basement turning place,the rest places are safer;the relative displacement curve of civil air defense basement is smooth and it monotonically rises along the height;compared with the tunnel,though damage values of civil air defense basement’s local areas are slightly larger,their relative displacements are smaller;civil air defense basement causes damage values of tunnel’s local areas to slightly increase while the range of large relative displacement obviously decreases;the influence of tunnel on civil air defense basement has no obvious law.

关 键 词：地铁隧道 人防地下室 相互作用 地震反应 

分 类 号：TU432[建筑科学—岩土工程] TU93[建筑科学—土工工程]