预制地下综合管廊地震响应有限元分析  

Finite Element Analysis of Seismic Response of Prefabricated Underground Utility Tunnel

作　　者：彭勃[1] 李晓宁[1,2] 王唤龙 吴久江[1,2] 王林 PENG Bo;LI Xiao-ning;WANG Huan-long;WU Jiu-jiang;WANG Lin(College of Civil Engineering & Architecture, Southwest University of Science and Technology, Mianyang 621010, China;Sichuan Key Laboratory of Engineering Materials and Structure Shock and Vibration, Mianyang 621010, China;China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China)

机构地区：[1]西南科技大学土木工程与建筑学院,绵阳621010 [2]工程材料与结构冲击振动四川重点实验室,绵阳621010 [3]中铁二院工程集团有限责任公司,成都610031

出　　处：《科学技术与工程》2022年第16期6619-6625,共7页Science Technology and Engineering

基　　金：国家自然科学基金青年科学基金(42007247);四川省科技支撑计划(2018JY0496);国家自然科学基金(51908476)。

摘　　要：为揭示预制综合管廊在地震荷载工况下的薄弱部位及其受力、变形情况,以自卡式全预制地下连续墙综合管廊为研究对象,进行了地震响应三维有限元分析。结果表明:地震作用下,结构位移主要受土体影响,结构边角点动力响应强烈,顶板、底板动力响应强于侧墙;结构位移从下往上呈递增趋势,应力集中于边角、接头,凸墙纵筋受力明显,两侧墙纵筋轴力呈反对称趋势;加速度传播受介质影响,结构中加速度放大系数低于土体。In order to reveal the weak parts,stress and deformation of prefabricated utility tunnel under seismic load.The seismic response finite element analysis was carried out by taking the self clamping fully prefabricated diaphragm wall utility tunnel as the research object.The results show that under the earthquake action,the structural displacement is mainly affected by the soil,the dynamic response of the structural corner points is strong,the dynamic response of the roof and floor is stronger than that of the side wall.The structural displacement increases gradually from the bottom to the top,and the stress is concentrated in the corner and joint.The longitudinal reinforcement of the convex wall is stressed obviously,and the axial force of the longitudinal reinforcement of the two walls shows an antisymmetric trend.The acceleration propagation is affected by the medium,and the acceleration in the structure is amplified,the coefficient is lower than that of soil.

关 键 词：综合管廊 地下连续墙 全预制 地震响应 有限元分析 

分 类 号：TU352.11[建筑科学—结构工程]