[1]王彦超,邓长根.含初弯曲缺陷的变刚度井壁整体稳定性分析[J].东南大学学报(自然科学版),2009,39(1):68-72.[doi:10.3969/j.issn.1001-0505.2009.01.013]
 Wang Yanchao,Deng Changgen.Global stability analysis of bored shafts with initial bending imperfection and varying stiffness[J].Journal of Southeast University (Natural Science Edition),2009,39(1):68-72.[doi:10.3969/j.issn.1001-0505.2009.01.013]
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含初弯曲缺陷的变刚度井壁整体稳定性分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第1期
页码:
68-72
栏目:
其他
出版日期:
2009-01-20

文章信息/Info

Title:
Global stability analysis of bored shafts with initial bending imperfection and varying stiffness
作者:
王彦超 邓长根
同济大学建筑工程系, 上海 200092
Author(s):
Wang Yanchao Deng Changgen
Department of Building Engineering, Tongji University, Shanghai 200092, China
关键词:
初始弯曲缺陷 井壁整体稳定性 变刚度 节间连接刚度 井壁分段数
Keywords:
initial bending imperfection structural stability of bored shaft varying stiffness rigidity of shaft connections number of shaft segments
分类号:
TD265.1
DOI:
10.3969/j.issn.1001-0505.2009.01.013
摘要:
针对钻井法施工阶段固井前变刚度井壁结构整体稳定性问题,引入初始弯曲缺陷,建立固井前井壁结构稳定性分析的力学模型,该模型考虑了井壁分段数、节间连接刚度、井壁刚度分布、井壁轴向荷载分布等因素.通过理论推导,结合井壁结构的稳定系数,得出井壁挠度、井壁荷载以及井壁临界荷载的关系式,并编制程序实现了求解.应用程序进行计算,定量分析了上述各个因素对井壁结构施工整体稳定性的影响,并对计算结果进行拟合,得出了井壁结构最大挠度与井壁荷载关系的实用计算公式.
Abstract:
For the analysis of global stability of a bored shaft during construction, a mechanical model with the initial bending imperfection has been setup, which considers different influencing factors, such as the varying stiffness of shaft, the number of shaft segments, the flexural rigidity of shaft connections, the distribution of axial loads, etc. The relational expression of the maximum deflection vs. the load and the crippling load of shaft is obtained through theoretical derivation and the influence of these factors on the stability of shaft has been analyzed quantitatively through program calculation. Practical formula for calculating the maximum deflection vs. the load of shaft is obtained through data fitting.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 王彦超(1979—),男,博士生; 邓长根(联系人),男,博士,教授,博士生导师,dengcg@mail.tongji.edu.cn.
基金项目: 国家自然科学基金资助项目(50478107).
引文格式: 王彦超,邓长根.含初弯曲缺陷的变刚度井壁整体稳定性分析[J].东南大学学报:自然科学版,2009,39(1):68-72.
更新日期/Last Update: 2009-01-20