矿区采动区框架桥紧邻有限空间土体侧土压力试验研究OA北大核心CSTPCD

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.