基于横向反应位移法的综合管廊交叉口抗震有限元分析  

Seismic Finite Element Analysis of Utility Tunnel Intersection Based on Transverse Response Displacement Method

作　　者：李勇 Li Yong(Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd.,200092,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,200092

出　　处：《特种结构》2021年第3期54-58,共5页Special Structures

基　　金：国家重点研发计划(2017YFC0805000)。

摘　　要：地下综合管廊作为重要的城市生命线工程,在地震发生时是否具有足够的安全性显得格外重要。本文选取河北雄安新区某地下综合管廊交叉口,采用反应位移法进行抗震有限元计算分析。结构外壁板弯矩最大值,与不考虑地震作用相比,M_(xx)最大值提高约为19.2%,M_(yy)最大值提高约为19.7%;结构整体水平位移最大值,不考虑地震作用时出现在下层外壁板跨中部位,考虑地震作用时出现在顶板位置处。根据上述结论得到,地下综合管廊结构当处于高烈度地区(如8度,0.30g)时,进行考虑地震作用下的补充计算是十分必要的。When an earthquake occurs,it is extremely important that the underground utility tunnel,as an important urban lifeline project,has sufficient safety.In this paper,the response displacement method is used to carry out seismic finite element calculation and analysis on an underground utility tunnel intersection project in Xiong’an New District,Hebei.The calculation results show that,compared with not considering the seismic effect,the maximum bending moment of the exterior panel of the structure,M_(xx) and M_(yy),increase by approximately 19.2% and 19.7%,respectively;The maximum horizontal displacement of the overall structure appears at the mid-span part of the lower exterior panel when the earthquake is not considered,and appears at the top panel when the earthquake is considered.According to those results,it is very necessary to perform supplementary calculations taking into account the effects of earthquakes when the underground utility tunnel is in a highintensity area(such as 8 degrees,0.30 g).

关 键 词：反应位移法 综合管廊交叉 口地震作用 有限元分析 

分 类 号：TU352.11[建筑科学—结构工程] TU990.3