一类双排桩支护结构内力计算

摘要
图/表
参考文献(9)
相关文章 (15)

全文: PDF (610 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要由于支护空间受到限制等原因，一类双排桩支护型式设计为前后排桩之间没有土体，形成只有后排桩挡土的空间门架式结构，国内外目前尚无此类双排桩支护结构内力计算方法。针对这类双排桩，把前后排桩看作是竖放的弹性地基梁，用土弹簧模拟基坑开挖面以下的土抗力，根据弹性地基梁的挠曲微分方程对双排桩进行分段，建立各自的内力方程。利用幂级数法结合桩端边界条件求出开挖面以下桩身的内力及变形，然后由连系梁中间截面的变形协调条件，建立力法方程，求解出连系梁中间截面的内力，进而求出前后排桩各截面的内力。结合工程实例对这一类型式的双排桩支护结构进行计算并与实测值作对比分析，提出对这一类双排桩支护结构设计有参考价值的建议。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	范秋雁1
	许胜才2
	崔峰3

关键词 ：桩基础, 双排桩, 弹性地基梁, 内力计算, 幂级数法

Abstract：For the reason that the retaining space suffers from the restraint，a type of retaining structure with double-row piles is designed as the structure without soil solum between the pre-row pile and post-row pile，to form the soil-retaining spatial door-frame structure in the post-row pile. At present，there is no calculation method for internal force of such kind of retaining structure with double-row piles. For this type of double-row piles，the pre-row pile and the post-row pile are both considered as elastic foundation beam placing upright. The soil spring is employed to simulate the soil resistance under excavation surface. The sections of double-row pile are divided on the basis of differential equations of elastic foundation beam deflection to establish internal force equations of sections. The power series method is used to determine the internal force and deformation of the pile body below the excavation surface with the boundary condition of pile tip. Under the deformation compatibility condition of middle section of coupling beam，a equation of force method is established to get the internal force of middle section of coupling beam；and then the internal forces of different sections of the pre-row pile and the post-row pile are obtained. Finally，combining with the engineering examples，this type of retaining structure with double-row piles is calculated and the calculation results are compared with the measured statistics. Some valuable suggestions are put forward for design of this type of retaining structure with double-row piles.

Key words： pile foundations double-row piles beam on elastic foundation calculation of internal force power series method

引用本文:

范秋雁1，许胜才2，崔峰3. 一类双排桩支护结构内力计算[J]. 岩石力学与工程学报, 2012, 31(S1): 3152-3158.
FAN Qiuyan1，XU Shengcai2，CUI Feng3. CALCULATION FOR A TYPE OF RETAINING STRUCTURE WITH DOUBLE-ROW PILES. , 2012, 31(S1): 3152-3158.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2012/V31/IS1/3152

[1] 刘钊. 双排支护桩结构的分析及试验研究[J]. 岩土工程学报，1992，14(5)：76–80.(LIU Zhao. Study of analysis and test of retaining structure with double-row piles[J]. Chinese Journal of Geotechnical Engineering，1992，14(5)：76–80.(in Chinese))

[2] 何颐华，杨斌，金宝森，等. 双排护坡桩试验与计算的研究[J]. 建筑结构学报，1996，17(2)：58–66.(HE Yihua，YANG Bin，JIN Baosen，et al. A study of the test and calculation of double-row fender piles[J]. Journal of Building Structures，1996，17(2)：58–66.(in Chinese))

[3] 郑刚，李欣，刘畅，等. 考虑桩土相互作用的双排桩分析[J]. 建筑结构学报，2004，25(1)：99–106.(ZHENG Gang，LI Xin，LIU Chang，et al. Analysis of double-row piles in consideration of the pile-soil interaction[J]．Journal of Building Structures，2004，25(1)：99–106.(in Chinese))

[4] 黄凭，莫海鸿，陈俊生. 双排桩支护结构挠曲理论分析[J]. 岩石力学与工程学报，2009，28(增2)：3 870–3 875.(HUANG Ping，MO Haihong，CHEN Junsheng. Theoretical analysis of double-row piles retaining structure deflection[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(Supp.2)：3 870–3 875.(in Chinese))

[5] 中华人民共和国行业标准编写组. JGJ120—99建筑基坑支护技术规程[S]. 北京：中国建筑工出版社，1999.(The Professional Standards Compilation Group of People¢s Republic of China. JGJ120—99 Technical specification for retaining and protection of building foundation excavations[S]. Beijing：China Architecture and Building Press，1999.(in Chinese))

[6] 杨晶. 双排桩支护结构的数值分析[硕士学位论文][D]. 天津：天津大学，2003.(YANG Jing. The numerical analysis of retaining structure with double-row piles[M. S. Thesis][D]. Tianjin：Tianjin University，2003.(in Chinese))

[7] 高大钊. 深基坑工程[M]. 北京：机械工业出版社，1999：76.(GAO Dazhao. Engineering of deep foundation excavations[M]. Beijing：China Machine Press，1999：76.(in Chinese))

[8] 胡人礼. 桥梁桩基础分析和设计[M]. 北京：中国铁道出版社，1987：90–92.(HU Renli. Analysis and design for pile foundation of bridge[M]. Beijing：China Railway Publishing House，1987：90–92.(in Chinese))

[9] 刘国彬，王卫东. 基坑工程手册[M]. 2版. 北京：中国建筑工业出版社，2009：1 118.(LIU Guobin，WANG Weidong. Handbook for foundation pit engineering[M]. 2nd ed. Beijing：China Architecture and Building Press，2009：1 118.(in Chinese))