Nonlinear Anti-seismic Simulation And Analysis Of Masonry Structure With Assembly Columns

As a common structure type in rural area, masonry structure is an unsafe type due to lack of columns and beams, and this structural type often collapses in earthquakes.Technicians designed pre-cast tie column and core tie column (all two types columns are called assembly column)which are easy to set up and can be made in factory for rural area. For validating particular performance of these two new type columns,the test is needed. The tests will cost too much man power, material resources, financial resources, so the test times is limited, and the FEM research is needed.The use of FEM is popular, but the masonry FEM research is not good enough at present, those masonry FEM researches can't get precise results or plastic results of masonry structure.This paper complete the following tasks:â‘ Summarized common FEM softwares and masonry FEM ways,analyzed the deficiencies of them.â‘¡This paper adopts FEM software ABAQUS, and researches the analysis method and software operation ways.â‘¢This paper researched masonry material characters and found a way to input masonry material characters to ABAQUS.â‘£This paper compared test results and FEM results, so the accuracy of analysis method in this paper has been proved, meanwhile, this paper analyzed walls'performance with different wall openings, different top pressures and different columns.The main conclusion is as follows:1)This paper researched ABAQUS and masonry structure for getting an universal applicable, reliable analysis method. This paper uses this analysis method to analyze pre-cast tie column , core tie column and related masonry structure,which make up for the deficiency of test.2)Integral FEM model suit the normal force-displacement curve of wall, but if the wall's detail analysis is needed, the research should adopts apart FEM model.3)When the walls have columns ,the performance is much better than normal walls. The columns'positive affection are higher when the wall is weaker.4)According to FEM research,pre-cast tie column and core tie column is a little weaker than normal concrete column, but these new type columns are also good enough. Considering the new type columns are easy to set up, so the new type columns can be use in rural area.5)Opening location will effect the masonry strength. When the opening is at wall's edge,the wall's strength is the highest, When the opening is at middle of the wall, the strength is lower.