爆炸固结法和塑料排水板法处理软土地基的对比试验  

Contrasting Test Study on Treating Soft Ground by Explosive Consolidation Method and Plastic Drain Board Method

作　　者：董亮[1] 蔡德钩[2] 叶阳升[2] 杨年华[2] 程爱君[2] 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]铁道科学研究院铁道建筑研究所,北京100081

出　　处：《中国铁道科学》2006年第6期12-16,共5页China Railway Science

基　　金：铁道部科技研究开发计划项目(2002G002)

摘　　要：爆炸固结法是软土地基处理的新方法。在宁启铁路试验段现场爆炸试验的基础上,研究软土地基经过爆炸后的变形特性。在地质情况接近情况下,对比爆炸固结法与塑料排水板加堆载预压法处理的结果表明,爆炸固结法加快了土体前期固结速率和地基沉降速率,有利于缩短施工工期,适用于工期紧的工程,但同时土体也伴随着较大侧向位移;爆炸固结法相对排水固结法,总沉降量有所增加,最终侧移总量基本一致,工后沉降和可比造价较接近,在工期允许情况下工后沉降均能满足设计要求。The explosive consolidation method is a new method to treat soft ground. The deformation char- acteristics of soft ground after blasting are investigated according to field blasting test of the working section on Ningqi railway. When geological conditions are similar, the preloading treatment results of the explosive consolidation methodand the plastic drain board consolidation method are contrasted. Results indicate that the former method can speed up the previous consolidation rate and settlement rate of soft ground, which is in favor of shortening construction period and fit for urgent project. However, the soil mass has the larger lateral displacement at the same time. The total settlement treated by former method is a litter larger than that by the latter method, although the final lateral settlements are the same by and large. The post-construction settlement compared with the cost is approaching. If the time limit for project is permitted, the post-construction settlements can all meet the design requirements.

关 键 词：爆炸固结法 塑料排水板法 地基变形特性 地基处理 软土地基 

分 类 号：U213.15[交通运输工程—道路与铁道工程]