有限土体主动土压力计算及探讨

目前深基坑边坡工程常常会出现基坑边离相邻建筑较近或者基坑边为稳定且坡度较陡的岩石边坡．此时支挡结构承受的是有限范围土体的土压力。目前的研究也只针对较具体的某类有限填土形式进行了主动土压力计算推导。实际工程中往往出现情况更复杂的有限土体问题，本文基于主动土压力为三角形分布或高大挡墙的梯形分布条件下，推导了有限土体断面形状更通用有限土体主动土压力计算方法。同时指出在特定情况下，有限土体土压力并不一定比无限土体土压力小。希望给工程设计提供一定参考。

Analytical Study And Discussion on Active Soil Pressure from Finite Soil Body

Caculation of active soil pressure from finite soil body is more and more important when buildings are so close to the costruction pit.Studies in the past aim at specific condition,but more complex problem appreas in practical engineerings.In this paper,formula about broader scope of application is derived.in the mean time,point out that the pressure form finite soil maybe is greater than the pressure form infinite soil.