公路地基承载力评价地理信息系统  

GIS for Highway Subgrade Bearing Capacity Evaluation

作　　者：刘怡林[1,2] 支喜兰[3] 陈智飞[4] 

机构地区：[1]交通运输部公路科学研究院,北京100088 [2]道路结构与材料交通行业重点实验室,北京100088 [3]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [4]北京超图软件股份有限公司,北京100015

出　　处：《公路交通科技》2013年第6期11-16,共6页Journal of Highway and Transportation Research and Development

基　　金：交通运输部西部交通建设科技项目(200431822311)

摘　　要：公路地基由于不同的上部结构形式和基底刚度,公路地基的承载特性与建筑刚性基础有所差异,直接采用建筑规范的地基承载力评价方法确定公路地基承载力特征值不甚合理,不能准确地体现公路地基实际具有的承载能力。通过公路路基、桥梁和涵洞与建筑物在上部结构类型和基础形式上的对比分析,确定了公路路基、桥梁和涵洞各自的地基承载力评价方法,提出了公路工程地基承载力的3级分类体系,构建了公路工程地基承载力评价地理信息系统。该系统利用GIS的空间数据管理和空间数据分析平台,结合我国不同土质大量的实测载荷试验数据和工程性质资料,实现了对我国公路工程地基土(路基和桥涵)承载力的有效评价。Because of the different superstructure types and foundation rigidities, the bearing capacity of soils under highway engineering is dissimilar to building foundation. It is unreasonable to determine the bearing capacity characteristic value of highway subgrade directly adopting the evaluation method from building specifications, which could not represent the real bearing capacity comparatively analyzing the superstructure types and foundation forms of and building, the evaluation methods for foundation bearing capacities culvert are determined, the 3-level classification system of highway and the highway subgrade bearing spatial data management and spatial highway subgrade. Through highway subgrade, bridge, culvert of highway subgrade bearing subgrade, bridge and capacity is presented, capacity evaluation system is established. With this system, using the data analysis platform of GIS, based on the plenty of measured data of foundation bearing capacity and engineering properties of different soils, the effective evaluation of the bearing capacities of foundation soils of subgrade, bridge and culvert in Chinese highway engineering is realized.

关 键 词：道路工程 路基 桥涵 承载力 GIS 评价方法 分类体系 

分 类 号：TU416[建筑科学—岩土工程]