复合锚杆桩加固桥梁桩基方案分析  

Analysis on the Reinforcement Strategies for Bridge Pile Foundation with Composite Bolt Piles

作　　者：吕高峰[1,2] 刘德国[2] 

机构地区：[1]中国地质大学(北京),北京100083 [2]北京市轨道交通建设管理有限公司,北京100037

出　　处：《都市快轨交通》2013年第5期79-82,共4页Urban Rapid Rail Transit

基　　金：北京市自然科学基金资助项目(8100001);北京市科技计划项目(DO8050600390803)

摘　　要：以北京地铁14号线区间隧道穿越丰北桥为例,在采用FLAC3D软件进行数值模拟计算的基础上,结合对桥梁沉降观测数据的分析,对复合锚杆桩加固丰北桥桩基的方案进行优化。实际施工后沉降观测数据表明,优化后的加固方案较好地控制了桥梁桩基的沉降,可满足桥梁基础沉降的控制技术指标,为后续类似工程提供参考。In this paper, by taking the tunnel on Line 14 of Beijing metro traversing under Fengbei bridge as an example, a finite element model for the project was developed based on FLAC3D software. Through the monitoring and analyzing the settlement data of the bridge pile foundation, the reinforcing strategies for the bridge pile foundation of Fengbei bridge using composite bolt piles were optimized. It was shown by the actual settlement data recorded in - situ that the optimized reinforcing strategies controlled the settlements of the bridge pile foundation effectively, which satisfied the controlled technical indexes of the settlement of the bridge pile foundation. The reinforcing strategies can be taken for reference by similar engineering projects.

关 键 词：城市轨道交通 复合锚杆桩 加固 桥梁桩基 沉降 方案优化 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]