Deformation Analysis Of Surrounding Environment Caused By Shield Tunnel Passing Through Sloped Building

With the development of underground engineering,under the shield tunnel in the structure of the problem is becoming more and more popular,in terms of engineering,this article will shield tunnel linhe,foundation pit in the buildings,buildings near hillside building of engineering characteristics of shield tunnel in the near absence of soil slope,buildings and unified inductive research.There are more and more shield tunnels going through such buildings on the slope.To summarize the changes of the surrounding environment in the construction process of this kind of engineering can provide some reference for similar construction in the future.Based on the finite element simulation to change with double tunnel under different wear position and double tunnel structures under vertical distance and the wear condition of the distance and slope of the three,respectively analysis of shield tunnel in the slope when buildings influence on the building and the surrounding environment,and then to metro line R2 baohua street ～ jinan long-distance bus station interval for a specific project background,In this paper,the influence of shield tunneling on buildings and surrounding environment during the process of shield tunneling through buildings facing the slope is analyzed and compared with the field monitoring data.It is concluded that the maximum settlement point of buildings is located on the side of the slope when shield tunneling through buildings facing the slope.The maximum value of ground subsidence is located between the building and the slope when the shield tunnel passes through the building facing the slope.When the distance between the building and the slope is far,the lateral displacement of the slope decreases with the increase of the depth.About the building settlement,in the process of shield tunneling,when the tunnel excavation face to about 1 times the tunnel before turns the soil depth,building slowly uplift,when the tunnel step by step through the process of building,building,rapid subsidence when shield tunnel crossing over,all around the segment grouting layer hardening process,building subsidence at a slower pace,and gradually stable.By changing the different underpass position of the double tunnel,the vertical distance between the double tunnel and the building and the distance between the underpass building and the slope,the three conditions will have a certain influence on the building and the surrounding environment,the degree of influence is the distance between the underpass building and the slope > Different underpass positions of double tunnels > Double tunnel and building vertical distance;According to the above research and analysis,the slope should be strengthened when the distance between the building and the slope is too close during the process of shield tunneling.When the underpass of shield tunnel is shallow,it is necessary to reinforce the soil under the building.When the shield tunnel runs under the slope and between the building and the slope,the slope bottom and the slope need to be strengthened.