既有公路桥墩基础动刚度法检测模型试验研究  

Model Test Study on Dynamic Stiffness of Bridge Pier Foundation

作　　者：潘玲 陈思文 罗志光 钟鼎文 胡圣江 

机构地区：[1]广东华路交通科技有限公司,广州510420 [2]广东省交通运输工程质量监督站,广州510420 [3]广深珠高速公路有限公司,广东东莞523925

出　　处：《广东公路交通》2015年第5期13-18,共6页Guangdong Highway Communications

基　　金：广东省交通运输厅科技项目(编号:2009-02-012)

摘　　要：通过模型试验研究动刚度数值的变化与基桩缺陷情况之间的内在联系,建立缺陷对基桩动刚度影响特征的相对变化规律,探讨既有桥墩基桩缺陷对基桩动刚度的影响特征。并对部分模型基桩进行了静载试验,得到了基桩的承载力特征值和试验场地的动静刚度对比系数,为建立基于动刚度法的既有公路桥墩基础检测及安全性能综合评估方法提供参考。Based on the model test, internal relations which exist between changes in the value of dynamic stiffness and conditions of pile defects are studied. The relative variation regularity of dynamic stiffness characteristics influenced by pile defects is established, and the influence of pile defects on pile dynamic stiffness is discussed. Then static load tests of some model piles are used to obtain the characteristic value of pile bearing capacity and the static and dynamic stiffness coefficient in the test site. The paper provides a reference for comprehensive evaluation on both road testing and safety performance of the bridge foundation piers with dynamic stiffness method.

关 键 词：动刚度法 桥梁 基桩 缺陷 承载力 

分 类 号：U443.22[建筑科学—桥梁与隧道工程]