现浇薄壁灌注桩在某基坑支护中的设计与应用  

Application of cast-in-place thin-walled tubular pile in deep foundation pit

作　　者：简洪钰[1] 陈福全[1] 朱俊向 

机构地区：[1]福建工程学院岩土与环境工程研究所,福建福州350007 [2]福建工大建筑设计院,福建福州350007

出　　处：《福建工程学院学报》2008年第1期1-7,共7页Journal of Fujian University of Technology

基　　金：国家自然科学基金资助项目(50778045)

摘　　要：通过基于液压高频振动锤施工成形的大直径现浇薄壁灌注桩技术在某深厚软土基坑支护中的成功应用,分析比较了不同直径灌注桩排桩支护的经济与技术指标,提出了环形截面配筋计算方法和环形截面支撑桩与地下室楼(底)板结合处的构造处理方法,论证该桩型在沿海软土地基基坑支护工程中具有广泛的推广价值。Large diameter cast-in-place thin-walled tubular piles were employed to support an excavation in deep soft clay layer, which was driven by a high-frequency hydraulic vibratory hammer. The economic and technical parameters of different types of cast-in-place piles were analyzed. The joint construction method between the supporting piles and basement subfloor was presented. And the reinforcement design method for structures with annular section was elaborated. It is indicated that the cast-in-place tubular piles can be well adopted in coastal soft clay excavations.

关 键 词：筒桩 高频振动锤 现浇薄壁灌注桩 环形截面 深基坑 基坑支护 

分 类 号：TU94[建筑科学—建筑技术科学]