Experimental study on bearing capacity of shell strip footings near geotextile-reinforced earth slopes  

土工织物加筋土坡附近带状壳体的基础承载力研究

作　　者：Seyed ALI GHAFFARI Elham SATTARI Amir HAMIDI Gholamhosein TAVAKOLI MEHRJARDI Abtin FARSHI HOMAYOUN ROOZ 

机构地区：[1]Department of Civil Engineering,School of Engineering,Kharazmi University,Tehran,Iran

出　　处：《Journal of Central South University》2021年第8期2527-2543,共17页中南大学学报（英文版）

摘　　要：From a financial point of view,urbanization frequently enforces the clients to construct superstructures near the slopes,giving rise to increasing the risk of building instability.By conducting a series of small-scale plate load tests,this work aims to investigate the effects of installing geotextile reinforcement layers in sandy slope and reducing the apex angle of triangular shell strip footings.The results show considerable effect of using geotextile-reinforced layers and decreasing the apex angle on the ultimate bearing capacity of shell foundations.With increasing foundation distance from the slope,the adverse effect of the slope is reduced.However,as the distance decreases,the effect of reinforcement and apex angle is increased.For practical applications,empirical equations are also presented for determining the ultimate bearing capacity of the footings and scale effect as well.Finally,3D numerical simulations are executed and compared with the experimental results.从经济角度来看,城市化经常迫使居民在斜坡附近建造上层建筑,但是这增加了建筑物失稳的风险。本文通过一系列小规模的板载试验,在沙质边坡中安装土工织物来加固层,并研究减小三角壳条形基础的顶角的影响。结果表明,使用土工织物增强层并减小顶角对壳基础的极限承载力具有显著效果。随着距斜坡地基距离的延长,斜坡的不利影响减小。但是,随着距离的缩短,增强效果和顶角增大。对于实际应用,本文提出了经验方程式用于确定基础的极限承载力和比例效应。最后,进行3D数值模拟并与实验结果进行比较。

关 键 词：SLOPE shell strip footing geotextile-reinforced apex angle ultimate bearing capacity numerical simulation 

分 类 号：TU470[建筑科学—结构工程]