公路填方路基粘性土地基承载力评价方法探讨  

Discuss on the Evaluation Method of Clay's Bearing Capacity for Filling Road-foundation

作　　者：何文勇[1] 汤新福[1] 

机构地区：[1]贵州省交通规划勘察设计研究院,贵州贵阳550001

出　　处：《公路工程》2009年第1期10-12,16,共4页Highway Engineering

基　　金：西部交通建设科技项目(200431822311)

摘　　要：现有的规范对评价填方路基地基土承载力不够明确,公路填方路基属柔性基础,直接采用刚性基础的地基承载力评价方法是不符合实际情况的。选择贵州已经建成通车的高等级公路中典型的2段填土路基,通过室内土试验和静力触探试验获得地基土的基本物理力学指标,在参照《公路桥涵地基与基础设计规范》(JTG D63-2007)和《贵州建筑地基基础设计规范》(DB22/45—2004)等的刚性基础承载力评价方法的基础上,对填方路基地基土承载力进行了分析,提出了公路填方路基承载力评价思路。It isn＇ t definitude to evaluate the bearing capacity of foundation soil of filling road-foundation in the existing criterion, and the filling road-foundation of highway belongs to soft foundation, it isn＇ t suitable to evaluate the bearing capacity of soft foundation with the evaluation method of rigidity foundation. Two typical filling road-foundation of highway in Guizhou province are selected in this paper. The basic mechanics indexes of these foundation are obtain by indoor soil test and static force touch exploring examination, and referring to the methods of rigidity foundation in ＂the criterion of foundation design for highway bridge and culvert＂ （DB22/45--2004） and ＂the Guizhou criterion of building foundation design ＂ （ JTG D63 - 2007 ）, analyses the bearing capacity of the examination section, presents the evaluation method of the bearing capacity for fill road-foundation.

关 键 词：粘土 填土路基 地基承载力 

分 类 号：U416.1[交通运输工程—道路与铁道工程]