Open AccessInfluence of Subgrade Splicing Mode and Width on Differential Settlement of Pavement Subgrade
Author(s) -
Liu Jia-rong,
Kai Wang,
Shiping Cui,
Shiqi Shu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/719/3/032066
Subject(s) - subgrade , settlement (finance) , geotechnical engineering , levee , differential (mechanical device) , displacement (psychology) , mode (computer interface) , finite element method , structural engineering , engineering , geology , computer science , psychology , world wide web , payment , psychotherapist , aerospace engineering , operating system
In order to study the influence of subgrade splicing mode and width on differential settlement, the large-scale finite element analysis software ANSYS is used to establish the subgrade settlement model, in which the parameters are determined according to the actual subgrade width, widening mode and engineering geological conditions of the widening project of Anxin expressway. The influence of unilateral widening and bilateral widening on the settlement of widened subgrade, the maximum differential settlement on the top of widened subgrade and the influence on horizontal displacement of widened subgrade are systematically evaluated. The results show that for unilateral and bilateral widening, with the increase of widening width, the settlement of the middle line of the old road gradually increases, and the double side widening can make the weight of the widened embankment distribute to both sides of the old subgrade, which greatly improves the settlement coordination of the old and new Subgrade, and is beneficial to the stress of the pavement structure.