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In order to research the influence on raft foundation of high-rise structure caused by the construction of shield tunnel underneath, this paper used the numerical simulation combined with onsite surveying, and studied the deformation rules and strengthening measure caused by metro shield tunneling crossing high-rise raft foundation building. The calculation show that when the shield tunnel excavation face away from the monitoring sites 3D (D:Shield tunnel diameter)distance, the raft foundation began to appear settlement. After 3D spacing through monitoring sites, the raft foundation settlement gradually stabilized; the shield tunnel excavation face away from the monitoring sites D distance, the raft foundation began to appear tilted. After 5D spacing through monitoring sites, the raft foundation tilt gradually stabilized. Before advancing of the shield machine, grouting reinforcement under the raft foundation can effectively reduce the incline of the raft foundation and story drift. With the construction of the tunnel, the horizontal displacement of the high-rise structure is changing dynamically, and the larger story drift which occurred in the process of construction should pay more attention. © 2018, Editorial Office of Journal of Liaoning Technical University. All right reserved.
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