Numerical Analysis On Stress Performance Of Prestressed Block Masonry

Small concrete hollow block with light weight, good thermal performance, good seismic performance, masonry, wall roughness, construction and high efficiency. Not only can be used in non-load-bearing walls, a higher intensity level block can also be used for load-bearing walls of multi-storey buildings. Can take advantage of our rich natural lightweight aggregate resources and industrial waste as raw material, has a good social and economic double benefit to reduce the the block production costs and reduce environmental pollution. Small concrete hollow block with the same inherent shortcomings of masonry materials, such as tension capacity, poor seismic capacity by external loads are prone to cracks.Block walls prestressed, can significantly improve the performance of its force, to delay the appearance of cracks and improve the ultimate bearing capacity of masonry. And the construction process is simple, has an important significance for masonry cracking, seismic research, at the same time makes it possible to use high-rise buildings, the masonry. In this paper, the basis of the domestic and international research work, made the following aspects of work.In the previous test basis, using the finite element analysis software ANSYS to establish the number of specimens of different structural measures, different degrees of prestressed concrete block masonry walls with, and non-linear finite element analysis. The shear stress in the same horizontal loads, the principal tensile stress, and the variation of the horizontal displacement; analysis of comparative analysis of its cracking load and crack development situation.Analysis of Concrete Masonry Walls the shear pressure composite under stress failure mechanism of the prestressing degree, structural columns, high aspect ratio, and the hole and sill beam shear capacity of prestressed concrete block masonry, this basis, this paper, a the prestressing small concrete block masonry wall shear capacity formula for the reference of the actual projectThe results show that the prestressed masonry structures can significantly improve the shear crack and seismic capacity, and construction process is simple, has obvious advantages.