基于上限法的地基极限承载力计算模式探讨
摘要:当前地基极限承载力理论研究及实践应用的基本框架,仍采用的是Terzaghi所建议的三项叠加法,即分别考虑土体粘聚力、超载和地基土重对承载力的贡献,然后将三项进行叠加,由于土体并非线弹性材料,应用叠加原理在理论上是欠妥的。从理论上讲,采用整体考虑影响承载力的各种因素直接进行极限承载力计算更为恰当。为探讨采用三项叠加法与整体考虑各种影响因素直接计算的差别,基于多块体上限方法,分别采用两种计算方法对中心荷载作用下粗糙及光滑基础地基极限承载力问题进行了计算,探讨两种计算方法的差异,并从地基破坏面所反映出的信息揭示了两种计算存在差异的内在原因。
Abstract:At present, the bearing capacity calculation is based on three-items superposition method proposed by Terzaghi in study or practice. The three items which constituing the bearing capacity are the cohesion of the soil, the surcharge load beside the foundation and the weight of the soil Since the soil is neither linear nor elastic material,it is not a good choice to use the superposition method in theory. It maybe a good choice to directly calculate the bearing capacity with all the influnce factors taking into considered. To analyze the difference of the two rnothods mentioned above, the multi-block upper hound method is employed. The calculation results based on the two methods are presented here,and the difference is discussed. With the envelops obtained by the multi-block upper hound method, the cause of the difference for the two methods is demonstrated.
中文标题：
基于上限法的地基极限承载力计算模式探讨
Bearing Capacity For Upper Bound Method Analysis
作者：
秦会来1,李峰2
Qin Huilai1,Li Feng2
作者简介:秦会来,1979年生,河南辉县人,博士,从事岩土工程稳定性问题研究,E-mail:huilaiqin@163.com
通讯地址：
1. 中国建筑股份有限公司技术中心, 北京 101300; 2. 中国建筑第二工程局有限公司, 北京 100054
1.TechnicalCenter,ChinaStateConstructionEngineeringCorporation,Beijing101300,China; 2.ChinaConstructionSecondEngineeringBureauLTD.,Beijing100054,China
中图分类号:TU431
doi:10.3969/j.issn.1007-2993.2012.03.001
出版物：岩土工程技术
收稿日期:2012-02-27
网络出版日期:2021-07-06
关键词:地基承载力,多块体上限法,极限分析
Key words:bearing capacity,multi-block upper bound method,limit analysis
文档包含图片数量：图片(0)张
文档包含表格数量：表格(0)个
参考文献：
基金项目：
基金项目: 中国建筑股份有限公司科技研发课题(CSCEC-2010-z-01-5-05)
- 文件大小:
- 290.65 KB
- 下载次数:
- 60
-
高速下载
|
|
