Optimal Stiffness Of Shear Wall Linked With The Ground In Shear Wall Structure Of Large Space At Low Part Based On Matlab

In the recent twenty years,the shear wall structure of large space at low part is increasingly applied in engineering Since its first use in the middle of 1970s in china.Because of the obvious Changing of vertical rigidity,this structure is greatly different from the traditional ones in forms and load-bearing characteristics.The rigidity of shear wall linked with the ground(the quantity of shear wall linked with the ground) is an important factor in influencing the safety and economic of the shear wall structure of large space at low part.If the quantity of shear wall linked with the ground is too small,it is unable to meet security and the application needs because of the lateral deformation;conversely,it will affect the application needs of the building and increase the amount of materials.In this paper,the analysis of this issue existing in the shear wall structure of large space at low part and the optimal design for the reasonable stiffness of shearing wall are done.In order to calculate the objective function and the constraint conditions in the optimal methods,the shear wall structure of large space at low part should be analyzed. The thought of the flexibility matrix method is cited in the analysis of the shear wall structure of large space at low part to calculate the natural frequency and modal.The method is introduced in <Flexibility Matrix Method for the Natural Frequency and Modal Calculation of Shear Wall Structure Supported on frame> by Shen Pusheng. Based on the structure's characteristic,the so-called modal analyze response spectrum method to solve the earthquake actions of the whole structure was employed;we further consider this action as the aim function.Then,based on the zonal mixed method,the whole structure can be divided into shear wall structure above transfer story and frame-shear wall structure under transfer story two parts.The distortions of shear wall structure above transfer story and frame-shear wall structure under transfer story can be calculated respectively.Considering the harmony of the two divided structures,the displacement formulas of whole structure is deduced strictly,and consider the maximum ration of sideway to height of the bottom floor as the constraint conditions.In the shearing wall's stiffness optimization,more suitable design for the optimal method is developed.At the same time how to proof this optimization in a rational area is provided.On the basis of this paper's methods for analysis and optimization,the shear wall structure of large space at low part analysis and optimum MATLAB software can be used to make the original optimal design for the shear wall structure of large space at low part and to determine displacement of the structure.An optimal stiffness of the shear wall linked with the ground for engineering design can also be directly recommended.