摘要
为了探讨盾构隧道近距下穿公路桥梁桩基的结构扰动效应,以某工程为例,基于Midas GTS NX建立三维数值模型并结合现场监测数据,分析桩顶沉降、桩身位移及附加弯矩的响应特征。结果表明,盾构掘进过程中桩基结构产生一定可测变形,主要以弯矩变化为主控,整体响应在设计容许范围内,风险可控,数值模拟与监测结果吻合良好。
In order to explore the structural disturbance effect of shield tunnel passing through highway bridge pile foundation at close range,taking a certain project as an example,a three-dimensional numerical model was established based on Midas GTS NX and combined with on-site monitoring data to analyze the response characteristics of pile top settlement,pile body displacement,and additional bending moment.The results indicate that the pile foundation structure undergoes certain measurable deformations during shield tunneling,mainly controlled by changes in bending moment.The overall response is within the design allowable range,and the risk is controllable.The numerical simulation and monitoring results are in good agreement.
作者
麻若楠
MA Ruo-nan(Guangdong Hualu Transportation Technology Co.,Ltd.Guangzhou 510420,China)
出处
《全面腐蚀控制》
2025年第11期118-120,共3页
Total Corrosion Control
关键词
盾构隧道
桩基扰动
数值模拟
结构响应
shield tunnel
pile foundation disturbance
numerical simulation
structural response
