公路软土地基设计探讨  

Discussion on Soft Soil Foundation Design of Highway

作　　者：刘裕娥 Liu Yu’e(Shantou Highway Survey and Design Institute,Shantou 515041,China)

机构地区：[1]汕头市公路勘察设计院,汕头市515041

出　　处：《北方交通》2021年第11期60-63,68,共5页Northern Communications

摘　　要：公路路基修筑于天然地基上,承受各种荷载,要求地基必须具有足够的承载力。而软土地基因其自身天然含水量高、孔隙比大、压缩性强、抗剪强度和承载力低的特点,在各种荷载作用下,引起地基下陷或两侧挤出,轻则导致公路路基不均匀沉降和裂缝的出现,重则还可能导致安全事故的发生,因而需对软土地基进行有效处理。以省道337线潮阳路段路面改造工程为例,介绍软基处理形式的选择,对所选用的软基处理方案进行设计、计算、验算,结果满足设计规范要求,施工后投入运营,达到预期效果。Highway subgrade is built on natural foundation and bears various loads.It is required that the foundation must have sufficient bearing capacity.The soft soil foundation has the characteristics of high natural water content,large void ratio,strong compressibility,low shear strength and low bearing capacity.Under various loads,it causes foundation subsidence or extrusion on both sides,which may lead to uneven settlement and cracks of highway subgrade or even safety accidents.Therefore,it is necessary to effectively treat the soft soil foundation.Taking the pavement reconstruction project of Chaoyang section of provincial highway 337 as an example,the selection of soft foundation treatment form is introduced,so as to design,calculate and check the selected soft foundation treatment scheme.The results meet the requirements of design specifications.It is put into operation after construction to achieve the expected effect.

关 键 词：软基处理方法 固结度计算 地基沉降计算 稳定性验算 

分 类 号：U416.02[交通运输工程—道路与铁道工程]