Study on the Influence of Construction of Shallow-Buried Underground Excavation Tunnel on Adjacent Masonry Buildings

Abstract

This study simulated the condition of below-wall raft foundation supported masonry structure perpendicularly penetrated by shallow-buried and mining tunnelling using 3D MIDAS/GTS software with consideration of the coaction of structure, ground and tunnel. The load and deformation patterns of structure before and after the penetration of tunnelling excavation face were evaluated. Results from the study showed that: when the horizontal distance between the central axis of the structure and the axis of the tunnelL=0 m, the settlement of the structure increased before and after the penetration of tunnel through the masonry structure, and the settlement became stable after the tunnel passed through a certain distance (approximately 2.4 times of the thickness of ground cover); the structure settled overall and the difference of settlement was relatively small; the maximum first principal stressP1and the maximum deformation rateE1showed an overall increasing trend. With the increase ofLfrom 0, inclination of the structure towards the tunnel was witnessed, the settlement of foundation appeared to be linearly distributed and the inclination rate of foundation first increased then reduced;P1showed a decreasing trend andE1first reduced, then increased and decreased again.

Study on Effect of Frame Structures Crossed by Shallow-Buried and Mining Tunnelling

“…The present paper assumes that: (1) the osmosis of groundwater is ignored and soil deformation will not change with time; (2) the coordinate method is adopted for the structure-foundation and foundation-soil deformation calculation [8]; (3) the surface settlement before tunnel excavation is zero, i.e., the surface settlement caused by the building gravity is neglected.…”

“…At present, the main research methods about the influences of underground tunnel construction on nearby buildings include the analytical method [4], measurement method [5] and the finite element method [6], [7], [8], etc. But the main research methods mainly concentrates on the shield tunnel.…”

The Influence of Pile-Beam-Arch Construction on the Stratum and Station Support Structure

“…The most commonly used method in urban subway construction is shallow underground excavation (SUE). It can effectively control surface subsidence [1][2][3], which is more suitable for urban subway construction [4]. In 1990, the Xidan station was the first subway station in China to use the shallow burying and undercutting method for construction [5,6].…”