Study On Replacement And Reinforcement Of Shear Wall In A Frame

In recent years, frequent quality problems of China project, due to local insufficient strength of concrete structure can’t reach the requirements of the safe use of more and more projects. At the same time, because the whole shear wall structure, seismic and be more used in high-rise buildings. So for the insufficient strength of concrete and the influence on the overall performance of the shear wall structure reinforcement has certain practical significance.Research on this problem in our country at present, more concentrated on beams and columns in the replacement, for the study of shear wall in the replacement of less. Based on the existing reinforcement projects in China, using finite element analysis of shear wall in the analysis stage pumping replacement reinforcement.Based on the background of construction of a high-rise shear wall structure of residential buildings, first using PKPM software SATWE module on the stress status of structure analysis. Axle through comparing the replacement of all the walls of the pressure ratio, we can see, in the process of local replacement, a side wall, or a small amount of wall demolition and reinforcement effect on or around the other wall component is much smaller than the effect on the displacement of the wall itself. That is to say, in the process of construction of a replacement wall, side wall, the influence on the bearing capacity of the large wall member. Therefore, it is necessary to focus on the reinforcement of the structural member carrying capacity.Secondly, because of existing calculation of reinforcement scheme, using PKPM software SATWE module of the project overall computational process, found on the wall of the load is changing and little change in the overall load, so the wall sold the maximum load to load, to study the relevant issues concerning shear wall strengthened by replacement method.Finally, on the one hand, to computations, according to actual engineering practice, using ABAQUS software to the wall elastic analysis, replacement of each stage simulation, feasibility checking the reinforcement scheme of the found whether there is unsafe or else to remove a point to; on the other hand to optimization, simplified model, according to the first stage, carries on the discussion, removal length, dismantling sequence optimization.