隔墙位置对综合管廊力学性能影响分析

在软土地基上兴建双舱矩形综合管廊,存在结构两侧不均匀沉降和应力集中的问题,文中基于广州大学城综合管廊工程,考虑综合管廊与周围土体的相互作用,利用有限元软件MIDAS/GTS分析隔墙位置对双舱矩形综合管廊力学性能的影响,研究表明:不同隔墙位置时综合管廊底板和顶板的竖向位移曲线基本一致,竖向位移最大值始终出现在小舱室边墙处;综合管廊结构两侧的沉降差异随隔墙距管廊中轴线距离的增大而增大;综合管廊顶板和底板上部的水平拉应力最大值分别出现在隔墙和大舱室底板中央附近,且均随隔墙距管廊中轴线距离的增大而增大。

ANALYSIS OF THE INFLUENCE OF THE PARTITION LOCATION ON MECHANICAL PERFORMANCE OF UTILITY TUNNEL

Construction of double cabin rectangular utility tunnel on soft ground,existing problem of uneven settlement and stress concentration on both sides of the structure;Based on the utility tunnel of Guangzhou university town and considering the interaction between the utility tunnel and surrounding soil,this paper used finite element software MIDAS/GTS to analyze the influence of the Partition location on the mechanical Performance of the double cabin rectangular utility tunnel.The research shows that the vertical displacement curves of floor and roof of utility tunnel are basically the same at different partition locations,the maximum vertical displacement always appear in the side wall of the cabin;The differential settlement between the two sides of the utility tunnel increases with the increase of the distance between the partition wall and the middle axis of utility tunnel;The maximum horizontal tensile stress of the top and bottom of the integrated pipe gallery is located near the vicinity of partition wall and the center of the floor near the large cabin,and increases with the increase of the distance between the wall and the middle axis of the pipe gallery.