岩溶区临近重要建筑大直径桥桩施工关键技术  

Key Technology of Large Diameter Bridge Pile Construction in Karst Area Adjacent to Important Buildings

作　　者：王礼贵 WANG Ligui(Guangdong Foundation Engineering Group Co.,Ltd Guangzhou 510620,China)

机构地区：[1]广东省基础工程集团有限公司,广州510620

出　　处：《广东土木与建筑》2024年第10期74-78,共5页Guangdong Architecture Civil Engineering

摘　　要：以位于岩溶区临近重要建筑大直径桥桩工程为研究对象,对其关键施工技术进行研究,采用预处理方法解决溶洞漏浆塌孔沉降难题,针对入岩要求高采用扩孔技术,解决了大直径旋挖钻机入岩难题,显著降低施工震动对周边建筑物影响,施工过程安全可靠,可为类似工程提供施工经验和参考。Taking the large-diameter bridge pile engineering located near important buildings in karst areas as the research object,the key construction techniques are studied.The pre-treatment method is used to solve the problem of cave leakage,collapse and settlement.In re‐sponse to the high requirements for rock entry,the hole expansion technology is adopted to solve the problem of large-diameter rotary drill‐ing rig entering the rock,significantly reducing the impact of construction vibration on surrounding buildings.The construction process is safe and reliable,and can provide construction experience and reference for similar projects.

关 键 词：岩溶区 重要建筑 大直径桥桩 预处理 扩孔技术 

分 类 号：TU997[建筑科学—市政工程]