Self-centring segmental retaining walls—A new construction system for retaining walls  

作　　者：Mehdi JAVADI Reza HASSANLI Md Mizanur RAHMAN Md Rajibul KARIM 

机构地区：[1]UniSA STEM,University of South Australia,Mawson Lakes,5095,Australia

出　　处：《Frontiers of Structural and Civil Engineering》2021年第4期980-1000,共21页结构与土木工程前沿（英文版）

摘　　要：This paper reports on an experimental study on a new self-centring retaining wall system.Four post-tensioned segmental retaining walls(PSRWs)were experimentally tested.Each of the walls was constructed using seven T-shaped concrete segments with a dry stack.The walls were tested under incrementally increasing cyclic lateral load.The effect of the wall height,levels of post-tensioning(PT)force,and bonded versus unbonded condition of PT reinforcement on the structural behavior of the PSRWs was investigated.The results showed that such PSRWs are structurally adequate for water retaining structures.According to the results,increasing the wall height decreases initial strength but increases the deformation capacity of the wall.The larger deformation capacity and ductility of PSRW make it a suitable structural system for fluctuating loads or deformation,e.g.,seawall.It was also found that increasing the PT force increases the wall’s stiffness;however,reduces its ductility.The residual drift and the extent of damage of the unbonded PSRWs were significantly smaller than those of the bonded ones.Results suggest that this newly developed self-centring retaining wall can be a suitable structural system to retain lateral loads.Due to its unique deformation capacity and self-centring behavior,it can potentially be used for seawall application.

关 键 词：retaining wall SEGMENTAL precast concrete unbonded post-tensioning water retaining wall SEAWALL 

分 类 号：TU476.4[建筑科学—结构工程]