盾构隧道下穿建筑物受力影响分析

Analysis of the Influence of the Force on the Underneath of the Shield Tunnel

为了分析盾构隧道下穿砌体结构的影响,依托于昆明地铁1号线西北延得—环盾构区间下穿某住宅小区项目,理论分析盾构施工引起地表沉降影响范围和沉降量,明确盾构下穿建筑物变形监测控制标准及袖阀管注浆加固和盾构施工参数控制措施。并通过有限元GTS数值模拟分析研究,计算出盾构下穿建筑物土体的位移场、建筑物位移及内力大小分布情况,最终与监测数据进行对比,两者结果吻合度高,对类似工程有借鉴作用。

In order to analyze the impact of the shield tunnel under the masonry structure,this paper relies on the project of a residential district under the section of the 1 Kunming Metro Line northwest of the shield tunnel,and analyzes the scope and settlement of the surface subsidence caused by the shield construction,and defines the monitoring and control standards for the deformation of the shield under the building,and the grouting reinforcement and shield of the sleeve valve tube.Control measures for construction parameters.And through the finite element GTS numerical simulation analysis,the displacement field of the soil,the displacement of the building and the size distribution of the internal force are calculated.Finally,the results are compared with the monitoring data.The results are in high agreement and can be used for reference to similar projects.