汕昆高速公路软土地基高填方涵洞基础设计

摘要

软土地基上设置高填方刚性涵洞时,面临结构物荷载过大而天然地基强度不够的问题.总结软土地基对结构物的影响以及涵洞基础常见设计方法,并以汕昆高速公路龙川至怀集段涵洞设计为依托,阐述位于软弱地基的涵洞设计原则,对软土地基及涵洞基础进行分析和计算,并指出涵洞基础设计应充分考虑基础形式及基础埋深.%Setting of high filling culverts on soft soil subgrade faces the problems of excessive load on structures and insufficient strength of natural subgrade.This paper summarizes influences of soft soil subgrade on structures and common design methods for culvert foundation,and expatiates the principles for design of culverts on weak subgrade dependent on design of culverts at Longchuan -Huaiji section of Shangtou -Kunming Expressway,analyzes and calculates soft soil subgrade and culvert foundation,and points out forms and burial depth of foundation shall be fully considered in design of culvert foundation.