摘要
广州猎德大桥水中桥墩的支护方案采用钢板桩+钢支撑的支护体系,设计中采用钢管桩对钢板桩底部护脚的方法,解决钢板桩围堰可能由于嵌固深度不够而发生桩底位移过大的失稳破坏的问题,使工程顺利实施,为钢板桩在类似地质条件下的应用提供经验。施工监测中为监测钢板桩桩底位移过大(踢脚)的情况,采用监测对撑两端钢板桩相对位移变化的方法来预测踢脚情况。设计和监测方法均取得较好的效果。
The cofferdams of Liede bridge pier are retained by steel sheet pile and steel struts structure. Steel pipe piles are used to support the bottom of steel sheet pile to avoid excessive bottom displacement and cofferdams unstability due to less embedment length of steel sheet pile cofferdams. The method to ensure safety of cofferdams not only assists the achieving of the project successfully, but also offers the experience for the application of steel sheet pile on the similar geologic conditions. To find out excessive displacement of bottom of cofferdams, relative displacement of steel sheet piles locating two ends of steel struts is monitored. Technique of design and monitoring is effective.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2009年第11期2242-2248,共7页
Chinese Journal of Rock Mechanics and Engineering
关键词
水利工程
钢板桩围堰
嵌固深度
桩底位移
底部护脚
监测
hydraulic project
steel sheet pile cofferdam
embedment length
displacement of pile bottom
support of bottom of steel sheet pile
monitoring
