SIMPLIFICATION CALCULATION OF COMPOSITE PILE-SOIL STRESS RATIO OF COMPOSITE FOUNDATION OF RIGID PILE WITH CAP
-
摘要: 在文献[1]推导带帽刚性桩复合地基复合桩土应力比隐式计算公式的基础上,从分析带帽刚性桩复合地基沉降变形特征着手,不考虑复合桩体自身压缩变形量,对复合桩土应力比隐式公式进行简化,推导出带帽端承型桩和带帽摩擦型桩复合地基复合桩土应力比的显式公式,并得出带帽刚性桩复合地基按桩帽间土体模式的沉降计算公式,最后将计算结果与文献[1]进行对比,验证该简化方法的可行性和有效性。Abstract: Based on the documentation [1],the implicity calculation formula of composite pile-soil stress ratio was simplified by analyzing the deformation character of composite foundation of rigid pile with cap and taking no account of the compression deformation of composite pile,the explicit calculation formula also was deduced for the composite foundation of end bearing pile with cap and friction pile with cap,the settlement calculation formula was obtained according to the mode of soil besides pile cap for composite foundation of rigid pile with cap. At last,by comparing the calculation results with those form documentation [1],it was verified that the feasibility and effectivence of the calculation method.
-
[2] 江苏省交通基础技术工程研究中心. 沪宁高速公路路基拓宽综合处理技术研究成果总结报告[R]. 南京:江苏省交通基础技术工程研究中心,2004. 雷金波,姜弘道,郑云扬,等. 带帽桩复合地基复合桩土应力比的计算及影响因素分析[J]. 岩土工程学报,2005,27(11) :1300-1305. [3] 龚晓南. 复合地基理论及工程实践[M]. 二版. 北京:中国建筑工业出版社,2006. [4] 朱世哲,徐日庆,杨晓军,等. 带垫层刚性桩复合地基桩土应力比的计算与分析[J]. 岩土力学,2004,25(5) :814-817. [5] 董必昌,郑俊杰. CFG 桩复合地基沉降计算方法研究[J]. 岩石力学与工程学报,2002,21(7) :1084-1086. [6] 伊尧国,全志利,周长青. 软土地区桩体复合地基沉降变形与稳定性分析[J]. 天津城市建设学院学报,2001,7(4):252-257. [7] 郭忠贤,霍达. 刚性桩复合地基桩土应力比计算及承载特性分析[J]. 岩土力学,2006,27( 增刊) :797-802. [8] 郭院成,李明宇. 长短桩复合地基桩土应力比的力学计算方法[J]. 公路交通科技,2009,26(2) :37-41. [9] 郑俊杰,王熹,陈保国. 加筋路堤下桩式复合地基的桩土应力[J]. 华中科技大学学报:城市科学版,2007,24(2) :5-8. [10] 折学森. 软土地基沉降计算[M]. 北京: 人民交通出版社,1998.
点击查看大图
计量
- 文章访问数: 74
- HTML全文浏览量: 7
- PDF下载量: 44
- 被引次数: 0