[最新文献]基于对数-螺旋法计算被动土压力的电子表格技术[12/11/2020]

1 论文

A spreadsheet-based technique to calculate the passive soil pressure based on the log-spiral method 基于对数-螺旋法计算被动土压力的电子表格技术

Abstract: This paper presents an efficient technique to calculate the passive earth pressure of a cohesionless sloping backfill on a rigid retaining wall which is an extension of the Terzaghi's log-spiral approach. Moment equilibrium conditions are used to compute the minimum value of the passive pressure required to mobilize the passive failure. Terzaghi assumed that the pole of the log-spiral failure surface lies inside the soil mass, whereas the proposed technique and solutions show that the pole can lie inside or outside the soil mass. Thus, the developed technique has extended the log-spiral method reported by Terzaghi by providing a generalised solution. The distinctive feature of the proposed technique is the explicit and rigorous solutions developed which allow to evaluate the passive earth pressure with different friction angles for the soil and wall-soil interface, backfill slopes and wall inclination angles. These solutions are relatively simple to incorporate into a spreadsheet to derive the passive force and pressure. A series of experiments were carried out using a physical model and the Particle Image Velocimetry (PIV) technique to analyse the failure surface. The developed solutions were then validated with data obtained from model tests as well as experimental data found in the literature.

摘要：本文提出了一种计算刚性挡土墙上无内聚力斜面回填土被动土压力的有效技术，该技术是Terzaghi对数-螺旋法的延伸。采用力矩平衡条件计算调动被动失效所需的被动压力的最小值。Terzaghi假设对数-螺旋失效面的极点位于土体内部，而提出的技术和解决方案表明，极点可以位于土体内部或外部。因此，所开发的技术扩展了Terzaghi所报道的对数-螺旋法，提供了一个通用的解决方案。所提出的技术的显著特点是所开发的明确而严格的解决方案，它允许评估土和墙-土界面、回填土坡度和墙体倾斜角不同摩擦角的被动土压力。这些解决方案相对简单，可以纳入到电子表格中，从而得出被动力和压力。利用物理模型和粒子图像测速技术（PIV）对失效面进行了一系列的实验分析。然后，用模型测试获得的数据以及文献中的实验数据对所开发的解决方案进行了验证。

2 相关文献

Note: '相关文献' 是按照Google的排序算法产生出来的.

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[5] Earth Pressure and Retaining Wall Basics for Non-Geotechnical Engineers

[6] Embedded retatining walls: theory, practice and understanding

[7] Effect of Soil–Wall Friction Angle on Behaviour of Sheet Pile Wall Under Surcharge Loading

[8] Trial Wedge Approach to Determine Lateral Earth Pressures

[9] Lateral Earth Pressure Coefficients for Anchored Sheet Pile Walls

[10] Analysis of passive earth pressure modification due to seepage flow effects

[11] Earth pressure on cantilever walls at design retained heights

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