广东沿海地区大直径桩基工程的施工应用分析

Analysis on construction application of lager diameter pile foundation engineering in Guangdong coastal areas

广东沿海地区建筑物基础的上覆地层多为粉土、淤泥、含砾砂淤泥质土、砾砂、强风化及中风化的花岗岩,地下水有腐蚀性,地质条件复杂。以珠海电厂1#、2#机组烟气脱硫工程工艺楼桩基为例,对大直径桩基工程在该地区的应用做了系统介绍,重点对广东沿海地区大直径冲孔桩基工程的设计与验算、冲孔桩施工技术要点、技术难点和质量保证措施等进行了较为详细的分析,并通过相关部门的检测,验证了该桩基工程的可靠性、安全性。该工程的成功应用为中国南方沿海地区大直径桩基工程的应用提供了直接的实用资料。

The overlying strata of building foundation in Guangdong coastal areas are silty soil,mud,muddy soil contains gravel sand,gravel sand,strong and medium weathered granite,and with corrosive groundwater and complex geological conditions. Taking the foundation of 1# and 2# units desulphurize engineering technology building of Zhuhai power plant as example,the authors introduced the applicaton of large diameter pile foundation engineering in this area systematically,and analyzed the design and calculation of lager diameter pile foundation engineering,and the technical points,technical difficulties and quality guarantee measures of punch pile foundation engineering. The reliability and security of this foundation engineering has been verified through the detection by relevant departments. The successful application of this project provides direct practical data for large diameter pile foundation engineering application in the coastal areas of South China.