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| 基于Mindlin解的土压力位移计算模型 | |
| 引用本文： | 魏焕卫,杨敏,贾强,孙剑平.基于Mindlin解的土压力位移计算模型[J].岩土力学,2011,32(2):495-502. |
| 作者姓名： | 魏焕卫 杨敏 贾强 孙剑平 |
| 作者单位： | 1. 山东建筑大学,土木工程学院,济南,2500141;同济大学,地下建筑与工程系,上海,200092 2. 同济大学,地下建筑与工程系,上海,200092 3. 山东建筑大学,土木工程学院,济南,2500141 |
| 摘 要： | 以不同土压力状态与静止土压力状态时的压力差值计算分布力,基于Mindlin应变解建立了任意土压力变化下的土体侧向位移计算模型,计算得到土体达到主动极限状态下土体位移和达到被动极限状态下的土体位移。通过编制的程序研究了不同计算参数对土体达到主(被)动极限状态下土体位移的影响规律,包括土的内摩擦角、黏聚力、计算深度、计算宽度等,研究了土体主动极限位移和达到被动极限位移相关性规律。通过模型试验的实测资料验证了土压力位移计算模型的有效性和合理性。利用计算模型可以得到不同位移限值要求下的侧向土压力,从而为不同工程中土压力的合理取值提供了理论依据。 |
| 关 键 词： | 土压力 Mindlin应变解 土体侧向位移 极限状态 相关性 |
| 收稿时间： | 2010-05-22 |
Calculation model of soil pressure displacement based on Mindlin solution |
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| WEI Huan-wei,YANG Min,JIA Qiang,SUN Jian-ping.Calculation model of soil pressure displacement based on Mindlin solution[J].Rock and Soil Mechanics,2011,32(2):495-502. | |
| Authors: | WEI Huan-wei YANG Min JIA Qiang SUN Jian-ping |
| Institution: | 1. School of Civil Engineering, Shangdong Jianzhu University, Jinan 250014 China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092 China |
| Abstract: | The calculation model of soil pressure displacement is established based on Mindlin strain solution, that the difference of soil pressure between the calculated state and the static state is considered as the calculated distributed stress. The limited displacement of soil under active state of plastic equilibrium and that of soil under passive state of plastic equilibrium are both obtained with th model. The calculation program is programmed according to the calculation model to analyze the regulation of both the limited displacement of soil under active state and that of soil under passive state from some key parameters, including inner friction, cohesive force, calculated depth and calculated width. The measured data from a mdel test is used to illustrate the validity and rationality of the proposed model. The model can be used for calculating of soil pressure with different limited values of soil displacements, so as to provide a theorical basis. |
| Keywords: | soil pressure Mindlin strain solution soil lateral displacement limited state correlativity |
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