改进的基坑支护水平支撑温度应力及水平位移的计算方法

刘畅; 张亚龙; 郑刚; 孙盼盼

doi:10.11779/CJGE2015S1013

改进的基坑支护水平支撑温度应力及水平位移的计算方法 English Version

刘畅^1,2,
张亚龙^1,2,
郑刚^1,2,
孙盼盼^1,2

基金项目: 国家重点基础研究发展计划（“973”计划）资助项目; （2010CB732106）; 国家自然科学基金项目（51108312）

详细信息

作者简介:
刘畅(1974- ),女,博士,副教授,主要从事基坑工程、桩土相互作用、软土地基的研究。

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

Modified method for calculating temperature stress and displacement in horizontal strut of foundation pits

1. School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2. Key Laboratory of Coast Civil Structure Safety (Tianjin University), Ministry of Education, Tianjin 300072, China;

摘要

摘要: 温度变化对基坑支护系统受力和变形的影响受到越来越多的人的重视。为改进基坑支护系统中温度应力的计算方法,基于Winkler地基梁模型,采用弹性抗力法,提出等效弹簧刚度的概念,并推导了由于温度升高引起的支撑轴力和水平位移的计算公式,并且把计算结果和前人进行了对比。结果表明：与迭代法相比,省去了迭代过程,计算量大大减少,可用于估算实际工程中由于温度升高引起的水平支撑的温度应力和水平位移。
- 基坑支护结构 /
- 水平支撑 /
- 温度应力 /
- 水平位移
Abstract: The influence of temperature change on the stress and deformation of support system of foundation pits attracts more and more people's attention. Based on the Winkler foundation model and the elastic resistance method, the equivalent spring stiffness is proposed to improve the method for calculating the temperature stress in the horizontal strut of a foundation pit. A formula for calculating the change of axial force and horizontal displacement of strut due to temperature change is derived. Compared with the pre-method, the proposed method is simpler. Besides, it can also be used to estimate the change of axial force and horizontal displacement of strut due to temperature rise.
- pit-retaining structure /
- horizontal strut /
- temperature stress /
- horizontal displacement

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参考文献(6)

[1]	王志刚, 范鹏, 杨会军, 等. 温度变化引起的超宽基坑围护结构变形分析[J]. 隧道建设, 2005, 25(3): 12-14. (WANG Zhi-gang, FAN Peng, YANG Hui-jun, et al. Deformation analysis on super wide envelope of foundation pit due to temperature change[J]. Tunnel Construction, 2005, 25(3): 12-14. (in Chinese))
[2]	JGJ 120—2012建筑基坑支护技术规程[S]. 北京: 中国建筑工业出版社, 2012. (JGJ 120—2012 Technical specification for retaining and protection of building foundation excavations[S]. Beijing: China Architecture & Building Press, 2012. (in Chinese))
[3]	吴长胜, 田敬学. 基坑围护结构温度应力分析[J]. 西部探矿工程, 2004(5): 17-18. (WU Chang-sheng, TIAN Jing-xue. Analysis of thermal stress of excavation enclosure structure[J]. West-China Exploration Engineering, 2004(5): 17-18. (in Chinese))
[4]	郑刚, 顾晓鲁. 考虑支撑-围护桩-土相互作用的基坑支护水平支撑温度应力的简化分析法[J]. 土木工程学报, 2004, 35(3): 87-89. (ZHENG Gang, GU Xiao-lu. Simple method for calculating temperature stress in horizontal strut of foundation pit considering strut-pile-soil interaction[J]. China Civil Engineering Journal, 2004, 35(3): 87-89. (in Chinese))
[5]	吴明, 孙鸣宇, 夏唐代, 等. 多层支撑深基坑中考虑支撑-围护桩-土相互作用的水平支撑温度应力简化计算方法[J]. 土木工程学报, 2009, 42(1): 91-94. (WU Ming, SUN Ming-yu, XIA Tang-dai, et al. Simplified method of calculating temperature stress in multi-layer struts for deep excavations considering strut-pile-soil interactions[J]. China Civil Engineering Journal, 2009, 42(1): 91-94. (in Chinese))
[6]	郑刚, 顾晓鲁, 王建林. 温度变化对基坑支护结构的影响分析[C]// 中国土木工程学会第八届全国土力学及岩土工程学术会议论文集. 南京: 万国学术出版社, 1999: 631-634. (ZHENG Gang, GU Xiao-lu, WANG Jian-lin. Analysis of effect of temperature change on the retaining structure of foundation pit[C]// Proceedings of China Civil Engineering Society Symposium on the Eighth National Soil Mechanics and Geotechnical Engineering. Nanjing: International Academic Publishers, 1999: 631-634. (in Chinese))

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改进的基坑支护水平支撑温度应力及水平位移的计算方法 English Version

作者简介: 刘 畅(1974- ),女,博士,副教授,主要从事基坑工程、桩土相互作用、软土地基的研究。

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出版历程

Modified method for calculating temperature stress and displacement in horizontal strut of foundation pits

计量

出版历程

目录

作者简介:
刘畅(1974- ),女,博士,副教授,主要从事基坑工程、桩土相互作用、软土地基的研究。