工业与民用建筑中的桩基施工技术应用研究  

Research on the Application of Pile Foundation Construction Technology in Industrial and Civil Buildings

作　　者：王召龙 WANG Zhaolong(Shandong Rongxin Group Co.,Ltd.,Jining 273500,China)

机构地区：[1]山东荣信集团有限公司,山东济宁273500

出　　处：《中国厨卫》2024年第12期205-207,210,共4页Chinese Kitchen & Bathroom

摘　　要：文章提出真空复合降水与桩基联合处理技术,并通过现场试验研究,对岩溶地基嵌岩桩施工过程进行有限元分析,确定出溶洞顶板安全厚度,同时研究了溶洞尺寸参数对桩基承载能力的影响。研究结果表明,随着抽水时间及抽水量的增加,真空复合降水效率远大于管井常压降水;随溶洞顶板厚度增加,结构安全系数增加,桩基竖向位移减小,溶洞顶板安全厚度应大于1.50倍桩径;随溶洞洞径增加,桩基竖向位移随之增加,而溶洞洞高对桩基竖向位移基本无影响。The article proposes a combined treatment technology of vacuum composite precipitation and pile foundation,and conducts finite element analysis on the construction process of rock socketed piles in karst foundations through field experiments to determine the safe thickness of the cave roof.At the same time,the influence of cave size parameters on the bearing capacity of pile foundations is studied.The research results indicate that with the increase of pumping time and pumping volume,the efficiency of vacuum composite precipitation is much higher than that of pipe well atmospheric pressure precipitation;As the thickness of the cave roof increases,the structural safety factor increases,and the vertical displacement of the pile foundation decreases.The safe thickness of the cave roof should be greater than 1.50 times the pile diameter;As the diameter of the cave increases,the vertical displacement of the pile foundation also increases,while the height of the cave has little effect on the vertical displacement of the pile foundation.

关 键 词：深厚淤泥 溶洞 桩基施工 联合处理技术 数值分析 

分 类 号：TU741[建筑科学—建筑技术科学]