喀斯特地区端承桩改摩擦桩技术研究  

Research on the Technology of Replacing End Bearing Piles with Friction Piles in Karst Areas

作　　者：郑日华 ZHENG Rihua(Guangdong Guanyue Highway&Bridge Co.,Ltd.,Guangzhou 511400,Guangdong,China)

机构地区：[1]广东冠粤路桥有限公司,广东广州511400

出　　处：《工程技术研究》2023年第22期15-19,共5页Engineering and Technological Research

摘　　要：喀斯特地区桩基施工具有地质情况复杂、施工状况存在不确定性等特点,若桥梁桩位邻近高速公路及重要结构物时,溶洞桩基施工会对其具有较大的安全隐患。因此,邻近重要结构物的溶洞桩基施工时,需对该区域的地质构造进行有效分析和跟踪,采取有效的措施预防及解决隐患问题。基于此,文章以龙怀高速公路TJ32标段禾联岗互通上跨清连高速桥梁工程为依托,研究分析了对喀斯特地区邻近高速公路的溶洞桩基由端承桩改摩擦桩的技术,以期为类似工程提供参考。The pile foundation construction in karst areas has the characteristics of complex geological conditions and uncertain construction conditions.If the bridge pile is adjacent to the expressway and important structures,the construction of karst cave pile foundation will pose significant safety hazards to them.Therefore,in the construction of karst cave pile foundation adjacent to important structures,it is necessary to effectively analyze and track the geological structure of the area,and take effective measures to prevent and solve the hidden dangers.Based on this,this paper studies and analyzes the technology of changing the karst cave pile foundation from end bearing piles to friction piles in karst area adjacent to expressway based on the bridge engineering of Heliangang Interchange across Qinglian Expressway in TJ32 section of Longchuan-Huaiji Expressway,so as to provide reference for similar engineering.

关 键 词：喀斯特地区 摩擦桩 端承桩 可行性分析 

分 类 号：TU473.1[建筑科学—结构工程]