上埋式涵洞顶部垂直土压力计算方法探讨  

Study on Calculating Methods of Vertical Pressure on Top of Culverts

作　　者：严东方[1] 林从谋[1] 

机构地区：[1]华侨大学土木工程学院,福建泉州362021

出　　处：《地下空间与工程学报》2007年第2期245-247,251,共4页Chinese Journal of Underground Space and Engineering

摘　　要：根据上埋式涵洞顶部垂直土压力的受力特点,涵洞上覆土体采用完全损伤土的应力应变关系——结构性粘土的弹塑性损伤模型,地基采用线弹性模型,利用力的变形协调条件和力的平衡条件对上埋式涵洞顶部土压力的计算方法进行探讨,提出了考虑土的应力损伤和扰动损伤的垂直土压力计算公式。结果可用于指导工程实践。According to characteristic of vertical pressure bearing on top of the culverts, the stress -strain relationship of completely damaged soil-the elasto - plastic damage model of structural clay is applied to the earth fill and the linear elasticity model is used for the foundation. Based on the conditions of force equilibrium and deformation coordination,the calculating method about vertical pressure on top of the reinforced concrete culverts is studied,a calculative formula of vertical pressure on top of the culverts is given with considering the stress damage and disturbed damage of the each. The result provides a guidance to the project practice.

关 键 词：涵洞 土压力 弹塑性损伤模型 扰动因子 

分 类 号：TU432[建筑科学—岩土工程]