设置卸荷板的扶壁式挡土墙的特殊应用
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（1中国联合工程公司，杭州310022；2上海岩土工程勘察设计研究院有限公司，上海200031）
[摘 要] 针对扶壁式挡土墙跨过地坑的特殊实际情况，基于对设置卸荷板的扶壁式挡土墙的受力原理的准确分析，采用改进过的扶壁式挡土墙，利用卸荷板有效的减小了挡土墙的土压力，挡土墙截面也相应减小，同时利用卸荷板上的覆土调整了挡土墙倾覆力矩，增大了滑移稳定性和倾覆稳定性，并通过植筋方式把原有地坑作为挡土墙的巨大底板，形成一种特殊的挡土墙结构，安全经济合理。[关键词] 扶壁式挡土墙;卸荷板;土压力中图分类号：TU432 文献标识码：A 文章编号：1002-848X(2013)S1-0935-03Special application for the load-reduction platformed counterfort retaining wallPeng Lei1,Zhou Jinzhen2,Wu Yidong1(1 China United Engineering Corporation，Hangzhou 310022,China;2 Shanghai Geotechnical Investigations & Design Institute,Shanghai 200031,China)Abstract: Confronted with a special engineering application where a counterfort retaining wall crosses over an existed concrete ditch buried right under the wall, we put forward a special form of counterfort retaining wall with load-reduction platforms, and this is based on exact analysis of the soil pressure and load path. In detail, two load-reduction platforms are used to reduce the soil pressure on retaining wall, thereby, the retaining wall is designed to be thinner. Soil weight on the load-reduction platforms weakens the overturning moment, and strengthens the stability of slipping and stability of overturning. By the method of planting rein bar, united the newly constructed retaining wall with the existed ditch strongly, to a degree, the ditch acts as the huge foundation of the newly constructed retaining wall. As the structure form safe and saving, it is useful extensively.Keywords: counterfort retaining wall;load-reduction platforms;soil pressure作者简介：彭磊，硕士，工程师，Email:peng084@163.com。
