预应力锚索地梁板加固既有挡墙的设计

Design of Prestressed Anchor-Cable with Reinforced Slabfor Strengthening Existing Retaining Walls

通过对预应力锚索地梁板加固铁路路肩挡土墙的工程设计问题的分析,提出按弹塑性理论计算锚固段长度的计算式,其中锚固段粘结剪应力按非均匀分布处理。分析了锚固工程度整体和内部稳定性,提出按拟梁法计算内力,并根据内力设计地梁板。上述方法已在实际工程中成功应有,并取得了良好的工程效果。

Based on elastoplastic theory and a practical project case of prestressed anchorcable with reinforced slab for strengthening the retaining walls of railway subgrade shoulders, a method is proposed to calculate the anchorcable length under the condition that cohesion shearing stress is nonuniformly distributed. The stability of the project is analyzed by taking the slab as a beam, and the slabs are designed according to the stresses in the interfaces between the wall, the cement and the reinforcement. The proposed method has been applied in engineering practice with satisfactory outputs. 