摘要
为揭示矿区采动区框架桥侧墙紧邻土体为有限宽度时侧土压力的分布规律,开展了墙体绕墙底转动(RB模式)下松砂非极限土压力试验。研究结果表明:RB模式下,加载墙体和被动受压墙体的侧土压力均呈凸曲线分布,且均随墙体深度的增加先增大后减小。墙体深度相同的条件下,侧土压力、侧土压力合力均随相对挤压位移的增大而增大。加载墙体和被动受压墙体的侧土压力三维分布均为凸曲面分布,但是侧土压力极值出现区域不同。在相对挤压位移相同的条件下,加载墙体的侧土压力合力大于受压墙体,侧土压力合力作用点高于受压墙体。
In this study,non-limit earth pressure tests were conducted on sandy soil to investigate the distribution of lateral earth pressure adjacent to the sidewalls of a framework bridge in mining areas,using the rotation about the wall base(RB mode)and focusing on finite-width soil bodies.These tests revealed that under the RB mode,lateral earth pressure of the loading wall and the passive compression wall is convex curve distribution,and both increase first and then decrease with the increase of the depth of the wall.Additionally,at any given burial depth,the lateral earth pressures and their resultant forces increase with relative squeezing displacement.The three-dimensional distributions of these pressures form convex surfaces,exhibiting regional variations where maximum pressures occur.Importantly,under comparable conditions of squeezing displacement,the resultant lateral earth pressure on the loaded wall not only exceeds that on the compressed wall but also manifests at a relatively elevated point of action.
作者
窦国涛
张安静
张明飞
于文杰
王澳波
李梓源
DOU Guotao;ZHANG Anjing;ZHANG Mingfei;YU Wenjie;WANGAobo;LI Ziyuan(School of Civil Engineering and Environment,Zhengzhou University of Aeronautics,Zhengzhou 450046,China;School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,China;Henan Yellow River Engineering Construction Center,Zhengzhou 450001,China)
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2024年第3期322-332,共11页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金项目(41902266)
河南省科技攻关项目(212102310967,222102320468)。
关键词
采动区
框架桥
有限土体
RB模式
被动土压力
mining area
frame bridge
finite soil
RB mode
passive earth pressure
