Experimental study on repeatedly loaded foundation soil strengthened by wraparound geosynthetic reinforcement technique  

作　　者：Muhammad Nouman Amjad Raja Sanjay Kumar Shukla 

机构地区：[1]Geotechnical and Geoenvironmental Engineering Research Group,School of Engineering,Edith Cowan University,Joondalup,Perth,WA 6027,Australia [2]Department of Civil Engineering,School of Engineering,University of Management and Technology,Lahore,Pakistan [3]Civil Engineering Department,Delhi Technological University,Delhi,India

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》2021年第4期899-911,共13页岩石力学与岩土工程学报（英文版）

基　　金：funded by the Higher Education Commission(HEC),Government of the Islamic Republic of Pakistan and Edith Cowan University,Perth,Australia。

摘　　要：In the recent past,the potential benefits of wraparound geosynthetic reinforcement technique for constructing the reinforced soil foundations have been reported.This paper presents the experimental study on the behaviour of model strip footing resting on sandy soil bed reinforced with geosynthetic in wraparound and planar forms under monotonic and repeated loadings.The geosynthetic layers were laid according to the reinforcement ratio to minimise the scale effect.It is found that for the same amount of reinforcement material,the wraparound reinforced model resulted in less settlement in comparison to planar reinforced models.The efficiency of wraparound reinforced model increased with the increase in load amplitude and the rate of total cumulative settlement substantially decreased with the increase in number of load cycles.The wraparound reinforced model has shown about 45% lower average total settlement in comparison to unreinforced model,while the double-layer reinforced model has about 41% lower average total settlement at the cost of approximately twice the material and 1.5 times the occupied land width ratio.Moreover,wraparound models have shown much greater stability in comparison to their counterpart models when subjected to incremental repeated loading.

关 键 词：GEOSYNTHETICS Repeated loads Wraparound reinforcement technique Model tests Footing settlement Bearing capacity Reinforcement ratio Strip footing 

分 类 号：TU472[建筑科学—结构工程]