数值模拟盾构不同角度穿越砌体结构房屋

摘要

Shield Construction will result in disturbances to the surrounding soil , thus causing ground settlement , leading to adjacent structures a series of problems such as tilt ,crack and even collapse .Subway tunnel construction al-ways crosses through with a certain angle at the bottom of adjacent building inHangzhou ,which will cause permanent dis-tortion to buildings.By using three-dimensional MIDAS/GTS software,shield crossed the building with 0 degree,22.5 degrees,45 degrees,67.5 degrees,90 degrees was simulated,and the additional settlement of building and wall stress were also analyzed .Analysis of different angles crossing the masonry structure building .%盾构法隧道施工会对周围土体产生扰动,进而引起地面沉降,导致邻近建筑物倾斜、开裂乃至坍塌等一系列问题. 对于如杭州这样的建筑方位不规整城市,在地铁施工中经常会遇到隧道以一定角度从建筑物下方或邻近穿越的工况,将引起建筑物的永久性扭曲变形[1] ,产生较大危害. 本文采用三维MIDAS/GTS软件,模拟盾构隧道以0°、22.5 °、45 °、67.5 °、90 °穿越引起的建筑物附加沉降及墙体受力,分析盾构不同角度穿越砌体结构房屋规律.