山区桩柱式桥梁基桩水平变形可靠性分析研究

尹平保; 贺炜; 成滢; 周尚志

doi:10.11779/CJGE2015S1024

山区桩柱式桥梁基桩水平变形可靠性分析研究 English Version

尹平保^{1, 2},
贺炜¹,
成滢³,
周尚志^{1, 2}

1. 长沙理工大学土木与建筑学院,湖南长沙 410114; 2. 长沙理工大学桥梁结构安全控制湖南省工程实验室,湖南长沙 410114; 3. 湖南省交通规划勘察设计院,湖南长沙 410008. 通科技计划项目（201014）;长沙理工大学土木工程重点学科创新性项

基金项目: 国家自然科学基金项目（51408066,51478051）; 湖南省交; 目（13ZDXK09）; 长沙理工大学桥梁工程领域开放基金项目（14KA06）

详细信息

作者简介:
尹平保(1984- ),男,湖南邵阳人,讲师,博士,从事桩基础及支挡结构设计计算与应用研究。

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出版历程
- 收稿日期: 2015-03-25
- 发布日期: 2015-07-24

Reliability analysis of horizontal displacement of a pile beneath column-supported bridge located in mountainous area

1. School of Civil Engineering and Architecture, Changsha University of Science and Technology, Changsha 410114, China; 2. Hunan Province Engineering Laboratory of Bridge Structure (Changsha University of Science & Technology), Changsha 410114, China; 3. Hunan Provincial Communications Planning Survey & Design Institute, Changsha 410008, China;

摘要

摘要: 为研究桩柱式桥梁基桩水平变形及其可靠性。首先,分析了山区桩柱式桥梁基桩的承载特性,建立了相应的简化受力模型及挠曲微分方程,并对其进行求解得到了基桩内力与位移计算的表达式;在此基础上,分析了影响基桩水平变形的主要因素,建立了桩柱式桥梁基桩水平变形可靠度计算极限状态方程,并借助验算点法对其进行求解,得到了基桩水平变形可靠度指标及失效概率指标的计算表达式;最后,以某桥梁基桩为例,利用该方法计算了可靠度指标,对比分析表明,该方法与改进响应面法及蒙特卡罗法计算结果吻合较好,验证了该计算方法的可行性。
- 桩基础 /
- 水平变形 /
- 可靠度 /
- 验算点法 /
- m法
Abstract: The displacement and the relevant reliability of a pile beneath column-supported bridge are investigated. Firstly, the bearing characteristics of the bridge pile in mountainous area are analyzed, and its differential equations are established and solved, by which the internal force and displacement along the pile shaft are obtained. Secondly, the main influence factors for the horizontal displacement are analyzed. Based on the displacement distribution solved by the limit state equations, the reliability index and failure probability indexes are solved by the checking point method. Finally, an real case of a bridge pile is analyzed by the proposed method, and the results agree well with those of the improved response surface method and Monte Carlo method.
- pile foundation /
- horizontal displacement /
- reliability /
- checking point method /
- m method

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参考文献(17)

[1]	尹平保, 赵明华, 杨明辉, 等. 考虑 P - Δ 效应的陡坡段桥梁双桩结构受力分析[J]. 湖南大学学报(自然科学版), 2012, 39(1): 1-6. (YIN Ping-bao, ZHAO Ming-hua, YANG Ming-hui, et al. Force analysis of bridge double-pile in high and steep slope with consideration of P - Δ effect[J]. Journal of Hunan University(Natural Sciences), 2012, 39(1): 1-6. (in Chinese))
[2]	冯忠居. 特殊地区基础工程[M]. 北京: 人民交通出版社, 2008. (FENG Zhong-ju. Foundation engineering in special areas[M]. Beijing: China Communica-tion Press, 2008. (in Chinese))
[3]	赵明华, 尹平保, 杨明辉, 等. 高陡斜坡上桥梁桩基受力特性及影响因素分析[J]. 中南大学学报, 2012, 43(7): 2733-2739. (ZHAO Ming-hua, YIN Ping-bao, YANG Ming-hui, et al. The analysis of influence factors and mechanical characteristics of bridge piles in high and steep slopes[J]. Journal of Central South University, 2012, 43(7): 2733-2739. (in Chinese))
[4]	POULOS H G, DAVIS E H. Pile foundation analysis and design[M]. New York: Chichester Bisbano Toronto, 1980.
[5]	MEYERHOF G G, MATHUR S K, VALSNAGKAR A J. The bearing capacity of rigid piles and pile groups under inclined loads in layered sand[J]. Canadian Geotechnical Journal, 1981, 18(4): 514-519.
[6]	赵明华, 张玲, 刘建华. 公路桥梁嵌岩桩嵌岩深度计算[J]. 中南公路工程, 2007, 32(1): 1-4. (ZHAO Ming-hua, ZHANG Ling, LIU Jian-hua. Calculation methods for socketed length of rock-socketed pile[J]. Journal of Central South Highway Engineering, 2007, 32(1): 1-4. (in Chinese))
[7]	张玲, 赵明华, 赵衡. 双层地基水平受荷桩受力变形分析[J]. 岩土力学, 2011, 32(增刊2): 302-306. (ZHANG Ling, ZHAO Ming-hua, ZHAO Heng. Analysis of a laterally loaded pile in a two-layer soil[J]. Rock and Soil Mechanics, 2011, 32(S2): 302-306. (in Chinese))
[8]	吴恒立. 推力桩计算方法的研究[J]. 土木工程学报, 1995, 28(2): 20-28. (WU Heng-li. Study on calculation method of laterally loaded pile[J]. China Civil Engineering Journal, 1995, 28(2): 20-28. (in Chinese))
[9]	陈仁朋, 顾明, 孔令刚, 等. 水平循环荷载下高桩基础受力性状模型试验研究[J]. 岩土工程学报, 2012, 34(11): 1990-1996. (CHEN Ren-peng, GU Ming, KONG Ling-gang, et al. Large-scale model tests on high-rise platform pile groups under cyclic lateral loads[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(11): 1990-1996. (in Chinese))
[10]	RONOLD K O, BYSVEEN S. Probabilistic stability analysis for deep-water foundation[J]. Journal of Geotechnical Engineering, ASCE, 1992, 118(3): 394-405.
[11]	赵明华, 曾昭宇, 苏永华. 改进响应面法及其在倾斜荷载桩可靠度分析中的应用[J]. 岩土力学, 2007, 28(12): 2539-2542. (ZHAO Ming-hua, ZENG Zhao-yu, SU Yong-hua. Improved response surface method and its application to Reliability analysis of piles under inclined loads[J]. Rock and Soil Mechanics, 2007, 28(12): 2539-2542. (in Chinese))
[12]	曾昭宇. 倾斜荷载下基桩的可靠度分析[D]. 长沙: 湖南大学, 2006. (ZENG Zhao-yu. Reliability analysis of pile under inclined load[D]. Changsha: Hunan University, 2006. (in Chinese))
[13]	孙安. 管桩水平承载力可靠度分析[D]. 杭州: 浙江大学, 2011. (SUN An. Reliability analysis of horizontal bearing capacity of pipe pile[D]. Hangzhou: Zhejiang University, 2011. (in Chinese))
[14]	黄然. 水平力作用下架空直立式码头桩基可靠性分析[J]. 重庆交通大学学报(自然科学版), 2012, 31(1): 116-120. (HUANG Ran. Reliability analysis of overhead vertical pier on horizontal loading[J]. Journal of Chongqing Jiaotong University (Natural Science), 2012, 31(1): 116-120. (in Chinese))
[15]	JTG D63—2007 公路桥涵地基与基础设计规范[S]. 北京: 人民交通出版社, 2007. (JTG D63—2007 Code for design of ground base and foundation of highway bridges and culverts[S]. Beijing: China Communications Press, 2007. (in Chinese))
[16]	赵明华. 桥梁桩基计算与检测[M]. 北京: 人民交通出版社, 2000. (ZHAO Ming-hua. Calculating and detecting for bridge piles[M]. Beijing: China Communications Press, 2000. (in Chinese))
[17]	曹文贵, 李鹏, 赵明华. 多层地基横向受荷桩简化分析方法的改进与探讨[J]. 公路, 2005(4): 38-42. (CAO Wen-gui, LI Peng, ZHAO Ming-hua. Improvement and discussion of simply analyzed method of laterally loaded piles in multi-sub grade[J]. Highway, 2005(4):38-42. (in Chinese))