Open AccessSeismic performance of pervious concrete column improved ground in mitigating liquefaction
Author(s) -
R. S. V. Rashma,
B. R. Jayalekshmi,
R. Shivashankar
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1114/1/012015
Subject(s) - geotechnical engineering , liquefaction , pervious concrete , pore water pressure , column (typography) , geology , engineering , structural engineering , materials science , composite material , connection (principal bundle) , cement
This paper investigates the performance of pervious concrete column improved ground subjected to seismic loading. The seismic performance of pervious concrete column improved ground is also compared with conventional stone column improved ground in responses of lateral displacement, excess pore pressure, ground surface acceleration, shear stress-strain behaviour and stress path. A fully saturated mildly sloping sand strata is considered as unimproved ground. OpenSeesPL software is used to analyse soil models representing unimproved ground and improved ground with stone column and pervious concrete column inclusions. It is found that the pervious concrete column improved ground has better seismic performance than stone column improved ground. The lateral displacement of ground is found to be significantly reduced while using pervious concrete column. Also the use of pervious concrete column has reduced excess pore pressure generation than stone column indicating that the improved ground with pervious concrete column inclusion is efficient in mitigating liquefaction than conventional stone column improved ground.