[1]边晓亚,郑俊杰,徐志军,等.考虑沉降控制条件的群桩可靠度分析[J].东南大学学报(自然科学版),2015,45(4):782-786.[doi:10.3969/j.issn.1001-0505.2015.04.029]
 Bian Xiaoya,Zheng Junjie,Xu Zhijun,et al.Reliability analysis of pile groups considering settlement control requirements[J].Journal of Southeast University (Natural Science Edition),2015,45(4):782-786.[doi:10.3969/j.issn.1001-0505.2015.04.029]
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考虑沉降控制条件的群桩可靠度分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第4期
页码:
782-786
栏目:
交通运输工程
出版日期:
2015-07-20

文章信息/Info

Title:
Reliability analysis of pile groups considering settlement control requirements
作者:
边晓亚1郑俊杰1徐志军2章荣军1
1华中科技大学土木工程与力学学院, 武汉 430074; 2河南工业大学土木建筑学院, 郑州450052
Author(s):
Bian Xiaoya1 Zheng Junjie1 Xu Zhijun2 Zhang Rongjun1
1School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China
2School of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou 450052, China
关键词:
群桩 可靠度 沉降控制条件 群桩效应 系统效应
Keywords:
pile group reliability settlement control requirements pile group effect system effect
分类号:
U414
DOI:
10.3969/j.issn.1001-0505.2015.04.029
摘要:
考虑群桩效应和系统效应的影响,利用定义的正常使用极限状态模型因子,给出反映沉降控制条件影响的群桩承载力综合偏差系数,并结合单桩承载力可靠度方法提出考虑沉降控制条件的群桩可靠度综合分析方法.利用已有资料,研究了土体性质、桩型、承台、系统效应和容许沉降对群桩可靠度分析结果的影响.结果表明:无黏性土、低承台条件下群桩的可靠度指标比黏性土、高承台条件下群桩的可靠度指标大;群桩可靠度指标随系统效应系数的增大呈现出明显增加的趋势;群桩可靠度指标随沉降控制条件的放宽逐渐增大,但增大幅度逐渐降低.
Abstract:
Considering pile group effect and system effect and utilizing the model factor defined for serviceability limit state(SLS), a synthetic bias factor of bearing capacity of pile groups is proposed considering the settlement control requirements. According to the reliability analysis method of bearing capacity of single piles, a synthetic reliability analysis method of pile groups with consideration of settlement control requirements is presented. Based on the obtained data sources, the impacts of soil properties, pile types, pile cap types, system effect, and limiting tolerable settlement on reliability of pile groups are studied. The results indicate that the reliability indices of pile groups with ground contact caps in cohesionless soils are greater than those with freestanding caps in cohesive soils; the reliability index of pile groups significantly increases with the system effect factor; the reliability index of pile groups increases with the softening of settlement control requirements, however the increase rate gradually diminishes.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2014-12-20.
作者简介: 边晓亚(1986—),男,博士; 郑俊杰(联系人),男,博士,教授,博士生导师,zhengjj@hust.edu.cn.
基金项目: 国家自然科学基金资助项目(51278216, 51478201)、湖北省自然科学基金面上资助项目(2013CFB180)、河南工业大学高层次人才基金资助项目(2013BS010).
引用本文: 边晓亚, 郑俊杰, 徐志军,等.考虑沉降控制条件的群桩可靠度分析[J].东南大学学报:自然科学版,2015,45(4):782-786. [doi:10.3969/j.issn.1001-0505.2015.04.029]
更新日期/Last Update: 2015-07-20