The Making And Failure Form Analysis Of I-Shapde Masonry Specimens

This paper studied reinforced masonry wall structure with a flange in seismic performance, and the topics are the National Natural Science Foundation(50978177).Masonry structure of the large number of wide area, is a residential structure in the form of the earthquake zone. Throughout July28,1976Tangshan earthquake and May12,2008Wenchuan earthquake, we can easily find that the collapse of the masonry structure is the main reason of economic losses and casualties. Earthquake resistance of masonry structures is bound to arouse our attention. Both brick load-bearing component, and is the only lateral force resisting members. The brittle nature of the material is vulnerable to earthquake damage. In order to improve the seismic performance of masonry structures, masonry structures set in a ring beam, structural column, the horizontal reinforcement and tie bar and other measures to strengthen the seismic capacity of masonry structures. The main content is as follows:The papers reviewed Seismic behavior of masonry structure at home and abroad and based on the original to further explore the mutual transfer of the seismic performance of wall limb and mutual synergy. We designed the specimen of the same axis pressure ratio and aspect ratio, including the size and reinforcement design, by setting the structural column、the horizontal reinforcement and the ring beam to increase the shear capacity of masonry walls; Specimens with detailed production, construction and loading the setup, including the steel banding, pouring concrete, paste reinforced strain gauge, walls and other related work, and make full preparations for the test successfully.The paper Calculate shear and flexural capacity of the I reinforced masonry structure, compared with finite element results and analyzed the failure pattern of walls.In order to investigate the seismic performance of masonry structures constructed measures using ANSYS finite element analysis. One with a structural column, ring beam, the shape of the level of reinforcement cross-section reinforced masonry1/3scale Wall model and T-type with a structural column, horizontal reinforcement model of full-scale Wall cracks and load-displacement curve analysis, a rectangular specimen for comparison. The specimen bear the fixed vertical load and gradually increase the level of cyclic loading to study the shear destruction and damage by bending morphological characteristics, advantages and disadvantages of further study of the shear capacity and flexural capacity, as well as the mutual transfer of the wall of the limb to the bearing capacity, focuses on the flange and web of the synergy mechanism, the stress state of the reinforcement of the structural column and constraints on the Masonry structure.