摘要
针对临近高架桥的地铁进行数值模拟计算,得到应用CRD工法施工地铁和桥梁桩基的应力和位移分布,通过对地铁施工产生的应力场和位移场进行分析,对地铁施工采取了一些前期的加固措施,并在施工过程中对地铁和桥梁进行了监控,结果表明,由于根据模拟计算采取了合理的前期加固措施,地铁施工过程中桥基和地铁顶部土层位移均控制在5 mm以内,保证了地铁施工中桥梁的安全。
Aiming at a metro which is close to a viaduct,and through numerical simulation method,the stresses and displacements distribution of both the metro and bridge pile foundation during the construction of metro with CRD method are obtained.By analyzing the stress field and displacement field due to the construction of metro,early reinforcement measures are executed.Monitoring for both the metro and viaduct are also adopted during the construction of metro.Because of the reasonable and early reinforcement measures based on numerical simulation,the displacements of bridge foundation and the top soil of the metro are all within the limitation of 5mm,which could ensure the safety of the viaduct during the construction of the adjacent metro.
出处
《铁道标准设计》
北大核心
2012年第1期92-95,共4页
Railway Standard Design
关键词
地铁施工
高架桥
数值模拟
措施
监控
construction of metro
viaduct
numerical simulation
measures
monitoring
