高速公路深厚软基路桥过渡段处理方案技术经济比较  

Technical and Economical Comparison among Treatment Schemes of Road and Bridge Transition Section with Deep Soft Foundation on Expressway

作　　者：苏谦[1,2] 赵文辉[1,2] 王亚威[1,2] 陈忠平[3] 

机构地区：[1]西南交通大学土木工程学院,成都市610031 [2]西南交通大学高速铁路线路工程教育部重点实验室,成都市610031 [3]广州大学土木工程学院,广州市510006

出　　处：《公路》2016年第1期52-56,共5页Highway

基　　金：中国铁路总公司科技研究开发计划课题;项目编号2014G003-E;粤港关键领域重点突破项目;项目编号2012A0902000004

摘　　要：高速公路深厚软土地基路桥过渡段处理方法多,但一般处理方法存在施工难度大、施工控制比较困难、控制效果不理想等问题。泡沫轻质混凝土作为一种新型路基填料,具有自重轻、强度高、直立性强、长期性能稳定、施工便捷等优点,逐渐被用于高速公路路桥过渡段换填。文中以实际工程为背景,对泡沫轻质混凝土处理方法与预应力管桩处理方法进行安全性、经济性、适用性等3个方面分析比较,为类似工程实例提供借鉴和参考。There are tots of treatment schemes for expressway road-bridge transition sections on the deep soft foundation, but general treatment schemes have many disadvantages, such as difficult construction, difficult construction control, and unsatisfactory control effect and so on. Foamed lightweight concrete as a new type of roadbed filling has the advantages of light weight, upright, strong, stable performance and convenient construction, and is gradually used for the road-bridge transition. In this paper, the analysis and comparison between the foamed lightweight concrete treatment and prestressed pipe pile treatment are made through safety, economy and applicability aspects based on actual engineering practice, which can provide reference for similar projects.

关 键 词：高速公路 路桥过渡段 泡沫轻质混凝土 预应力管桩 技术经济比较 

分 类 号：P642.133[天文地球—工程地质学]