上埋式高填土涵洞模型地基应力分布数值模拟分析  

Numerical simulation analysis of stress distribution of top buried high filling soil culvert model

作　　者：范鹤 庞垚 FAN He;PANG Yao(School of Architecture and Civil Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学建筑与土木工程学院

出　　处：《沈阳工业大学学报》2020年第1期103-108,共6页Journal of Shenyang University of Technology

基　　金：国家自然科学基金项目(51208310);辽宁省自然科学基金项目(20180550118)

摘　　要：针对涵侧填土高度对高填土涵洞地基土中应力影响的问题,提出了采用数值模拟来探讨地基土中典型部位的土压力分布.分析不同涵洞结构形式、基础类型和涵洞侧面填土高度对地基土中应力的影响,研究地基土中典型部位的土压力分布.结果表明:涵洞结构形式对地基土中应力分布影响甚微;在距涵洞基础底部第一层土的中心点处,整体式基础较分离式基础相比地基应力增大约17%;随着涵侧填土的增加,地基土中应力的提高率先增加后减少,在涵侧填土为0.3 m时,地基土中应力提高率达到最大值.Focusing on the influence of filling soil height at the culvert side on the stress for the foundation soil of high filling soil culvert,the earth pressure distribution of typical parts in the foundation soil was investigated by numerical simulation.The effect of different culvert structures,foundation types and filling soil height at the culvert side on the stress of foundation soil was analyzed,and the earth pressure distribution of typical parts in foundation soil was studied.The results show that the culvert structure form has little effect on the stress distribution in the foundation soil.At the center point of first layer soil at the bottom of culvert,the foundation stress of integrated foundation increases by about 17%compared with that of separated foundation.With the increase of filling soil at the culvert side,the stress increasing rate in the foundation soil increases at first and then decreases afterwards.When the filling soil at the culvert side is 0.3 m,the increasing rate of stress in the foundation soil reaches the maximum value.

关 键 词：高填土 上埋式涵洞 数值模拟 应力提高率 地基土应力 盖板涵 整体式基础 土压力 

分 类 号：TU4[建筑科学—土工工程]