摘要
通过建立有限元数值模型,对乌鲁木齐地铁一号线下穿乌准铁路桥的盾构施工过程进行模拟分析。并根据模拟结果,分析隧道开挖对桥梁桩基础的影响:隧道左、右线开挖后,由于受隧道开挖卸载影响,靠近隧道的桩基一侧发生沉降,最大沉降量为1.66mm。对比加固前后桩基位移,发现注浆加固后桩基沉降量减小,桩基状态更加稳定。
A finite element numerical model is established to run simulations and analyses on the shield construction process of Metro Line 1 passing through the Uzhun Railway Bridge in Urumqi. Based on the simulation results, the impacts of tunnel excavation on the bridge pile foundation are analyzed. After the excavation of the left and right lines of the tunnel, the pile foundation near the tunnel is settled due to the impact of tunnel excavation and unloading, and the maximum settlement is 1.66 mm. Comparing the displacement of the pile foundation before and after reinforcement, it＇s found that the pile foundation settlement after grouting reinforcement is reduced, and the pile foundation is in a more stable state.
出处
《重庆建筑》
2018年第5期21-27,共7页
Chongqing Architecture
基金
重庆市应用开发(重点)项目(cstc2013yykf B30005)
国家自然科学基金项目(41601574)论文之一
关键词
隧道开挖
桩基
数值分析
加固
隧道盾构施工
runnel excavation
pile foundation
numerical analysis
reinforcement
shield construction
