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首页> 外文会议>Design and practice of geosynthetic-reinforced soil structures >Numerical Analysis of Working Properties and Inquiry of Design Method on Geosynthetic-Reinforced Soil Retaining Walls (GRS-RWs) with Rigid Facings
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Numerical Analysis of Working Properties and Inquiry of Design Method on Geosynthetic-Reinforced Soil Retaining Walls (GRS-RWs) with Rigid Facings

机译：刚性面板土工加筋土挡墙工作特性数值分析及设计方法探讨

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摘要

Geosynthetic-reinforced soil retaining wall (GRS RW) with a gravity wall facing (GWF) is a new retaining wall system, which is also called GRS RW-RWF(rigid wall facing). The differences of GRS RW-RWF to the common GRS RW with a thin concrete slab facing lie in that the rigid wall facing has larger thickness and higher rigidity, which can restrain deformation of backfill soil and undertake soil pressure. In this paper, focusing on the high reinforced embankment retaining wall, which is common used in the newly constructed railways and highways passing mountainous areas in China, and taking two different construction procedures (namely construction procedure A: backfilling geosynthetic-reinforced soil after the pouring of rigid retaining wall, and construction procedure B: pouring rigid retaining wall after the backfilling of geosynthetic-reinforced soil) into account, the working properties of GRS RW-RWF are analyzed from a few aspects including stress and strain of reinforcement materials and backfilling soil, and deformation of rigid retaining wall. The results show that the lateral deformation of GRS RW-RWF is linear distributed along the height of retaining wall (the max. value occurs on the top of retaining wall). Construction procedure B is superior to procedure A, for it can give preferable play to the role of reinforcements, reduce the soil pressure acting on rigid retaining wall and control its deformation. Moreover, a design method for GRS RW-RWF is suggested, which refers to the Double Wedge Method to calculate soil pressure acting on the wall and the working strain of reinforcement to determine the required strength of geosynthetic reinforcement.
机译：带有重力墙面（GWF）的土工合成材料加筋土挡土墙（GRS RW）是一种新的挡土墙系统，也称为GRS RW-RWF（刚性墙面）。 GRS RW-RWF与普通GRS RW带有薄混凝土板面的区别在于，刚性墙面具有更大的厚度和更高的刚度，可以抑制回填土的变形并承担土压力。本文以高强度路堤挡土墙为例，该路堤在我国新建的穿越山区的铁路和公路中常用，并采取两种不同的施工程序（即施工程序A：浇筑后回填土工合成材料加筋土）刚性挡土墙的结构和施工程序B：考虑回填土工合成材料加筋的刚性挡土墙），从增强材料和回填土的应力和应变等几个方面分析了GRS RW-RWF的工作特性，以及刚性挡土墙的变形。结果表明，GRS RW-RWF的横向变形沿挡土墙高度呈线性分布（最大值出现在挡土墙的顶部）。施工程序B优于程序A，因为它可以更好地发挥加筋作用，减少作用在刚性挡土墙上的土压力并控制其变形。此外，提出了一种GRS RW-RWF的设计方法，该方法参考“双楔方法”来计算作用在墙壁上的土压力和钢筋的工作应变，以确定土工合成纤维所需的强度。

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