| 主动极限位移规律与主动土压力计算公式探讨 |
| |
| 引用本文： | 李超,卫龙武. 主动极限位移规律与主动土压力计算公式探讨[J]. 岩土力学, 2008, 29(11): 3165-3169 |
| |
| 作者姓名： | 李超 卫龙武 |
| |
| 作者单位： | 1. 佛山市顺德区碧桂园物业发展有限公司，广东 佛山 528312；2. 江苏东大特种基础工程有限公司，南京 210008 |
| |
| 摘 要： | 针对基坑支护结构的工作特点和土体的具体情况，对朗肯土压理论的合理性和局限性进行了有益探讨，指出朗肯土压理论在支护结构土压力计算上的不足。在支护结构墙后土体化分为3个分区的基础上，以土体达到朗肯主动极限平衡状态时为例，得出墙后土体极限水平变位随土层深度呈抛物线形变化的规律。结合工程实际情况，提出了在小变位条件下考虑墙体位移、开挖深度和嵌固深度影响的朗肯主动土压力计算公式。
|
| 关 键 词： | 土压力 极限位移 支护结构 小变位 |
| 收稿时间： | 2007-02-02 |
Rule of active limiting displacement and calculation method of active earth pressure |
| |
| LI Chao,WEI Long-wu. Rule of active limiting displacement and calculation method of active earth pressure[J]. Rock and Soil Mechanics, 2008, 29(11): 3165-3169 |
| |
| Authors: | LI Chao WEI Long-wu |
| |
| Affiliation: | 1. Foshan Shunde Country Garden Property Development Co., Ltd, Foshan 528312, China; 2. Jiangsu Dongda Special Foundation Engineering Co., Ltd., Nanjing 210008, China |
| |
| Abstract: | Aiming at the rationality and limitation of the Rankine earth pressure theory to the characteristics of bracing for foundation pits and the specific soil conditions, the discussions are carried on. And the insufficiencies in the calculation method of bracing for foundation pits are pointed out. Taking the active limiting equilibrium condition of retained soil stress for example, the rule that the active limiting horizontal displacement along with the depth of retained soil accords with parabolic equation ba... |
| |
| Keywords: | earth pressure limiting displacement bracing for foundation pits small displacement |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
|
点击此处可从《岩土力学》下载全文 |
