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Non-limit passive soil pressure on rigid retaining walls

International Journal of Mining Science and Technology 2017年第3期27卷 581-587页

作者： Dou Guotao Xia Junwu YU Wenjie Yuan Fang Bai Weigang State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining & Technology Xuzhou 221008 China Jiangsu Collaborative Innovation Center of Building Energy Saving and Construction Technology Xuzhou 221116 China Zhengzhou Zhongding Steel Structure Engineering Co. Ltd. Zhengzhou 450000 China

This paper aims to reveal the depth distribution law of non-limit passive soil pressure on rigid retaining wall that rotates about the top of the wall(rotation around the top(RT) model). Based on Coulomb theory, the disturbance degree theory, as well as the spring-element model, by setting the rotation angle of the wall as the disturbance parameter, we establish both a depth distribution function for sand and a nonlinear depth distribution calculation method for the non-limit passive soil pressure on a rigid retaining wall under the RT model, which is then compared with experiment. The results suggest that under the RT model: the non-limit soil pressure has a nonlinear distribution; the backfill disturbance degree and the lateral soil pressure increase with an increase in the wall rotation angle; and, the points where the resultant lateral soil pressure acts on the retaining wall are less than 2/3 of the height of the wall. The soil pressure predicted by the theoretical calculation put forward in this paper are quite similar to those obtained by the model experiment, which verifies the theoretical value, and the engineering guidance provided by the calculations are of significance.

关键词： RT model Rigid wall Non-limit passive soil pressure spring element Genetic algorithm

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Concept modeling of tapered thin-walled tubes

引用

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第1期10卷 44-53页

作者： Michael L.DAY Department of Mechanical Engineering University of Louisville

This paper presents a method to create concept models for the tapered thin-walled tubes using beam elements and spring *** concept tapered beam models with different taper angles and cross sections are compared with those detailed models through impact *** crash results are recorded and compared,and the relatively good agreement is achieved between these *** modeling steps are illustrated in detail,and a general concept modeling method for such thin-walled tubes is summarized and presented.

关键词： Tapered tube Concept model Axial crushing Impact analysis Beam element spring element

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