中文摘要：

基于某高速公路岩溶区桥梁桩基处治的具体工程实践，结合理论分析和数值模拟方法，考虑群桩效应，从桩基竖向承载力、沉降计算等方面对桩端压浆和不压浆等2种处治方案进行了对比分析，并进一步探讨了岩溶区桥梁桩基承载和变形特性。结果表明，采用桩端注浆处治方案可保证该桥梁桩基的安全性。

英文摘要：

Based on the engineering practice of a case about brige piles in karst region on the highway, considering the effect of pile groups, the calculation of vertical bearing capacity and settlement of piles are presented combined with analytical method and numerical simulation, then the comparative a- nalysis of treatment methods about pile-end with grouting and non-grouting is conducted. The bearing and deformation characteristics of bridge piles in karst region are discussed. The results show that the bridge piles should be safe with the treatment method of pile-end grouting.