电缆隧道侧穿已有桥梁及房屋的影响分析

Influence Analysis of Cable Tunnel Passing through Existing Bridges and Buildings

基于某城区电缆隧道工程,采用有限元模型模拟了隧道开挖施工的全过程,对施工过程中周边已有建构筑物及电缆隧道本身的位移变形趋势均进行了计算分析。结果表明,电缆隧道侧穿已有建构筑物时,已有结构主要发生向下的沉降变形和靠近隧道的水平位移,针对变形趋势建议采用相应地面注浆加固以及增加同步注浆和二次注浆量的措施来保证工程的安全推进。

Based on the cable tunnel project in a city, the whole process of tunnel excavation is simulated by using finite element model. The displacement and deformation trend of existing buildings and cable tunnels around the construction process are calculated and analyzed. The results show that when the cable tunnel side passes through the existing buildings, the existing structure mainly undergoes downward settlement deformation and horizontal displacement towards the tunnel. According to the deformation trend, it is suggested to adopt corresponding ground grouting reinforcement and increase synchronous grouting and secondary grouting to ensure the safety of the project.