Open AccessResearch on the differential settlements of mat foundations
Author(s) -
C. M.,
Y. Y. Chen
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/351/1/012018
Subject(s) - foundation (evidence) , human settlement , differential (mechanical device) , subgrade , geotechnical engineering , stiffness , settlement (finance) , shallow foundation , bearing capacity , geology , engineering , civil engineering , structural engineering , computer science , geography , archaeology , world wide web , payment , aerospace engineering , waste management
Mat foundation is a very commonly used foundation type. There are many advantages in adopting mat foundations including the effects of loading compensation, full utilization of underground space, lowering foundation settlements and increasing the factor of safety of bearing capacity for foundations etc. In addition, because of the high stiffness of the mat foundation and foundation girders the differential settlements could be effectively decreased, which would in turn increase the safety of structures. The differential settlements of the foundation will produce extra stresses in the structure. At the worst it will make the structure members failure. There are many factors which would affect the differential settlements of the foundation, which include the uneven distribution of structure column loading, the subgrade reaction of foundation soils (or so called soil spring coefficient), the combined stiffness of the foundation plate and foundation girders, the shape and size of the mat plate etc. The main objective of this research is to use the finite element method to simulate the interactions between the mat foundation and the underneath soils. It will focus on the systematic research on all possible factors affecting the differential settlements of mat foundations. The influence of each factor on the differential settlements will be studied and identified. The influence charts for the differential settlements for each individual factor will be proposed. Finally a reliable method using these influence charts to predict the differential settlements of mat foundations will be developed, which will be verified by practical examples.