A Modular Building Structure Design And Windproof Research

The modular structure has a high degree of factoryization,and it will have broad development prospects and application value in high-rise buildings.Wind loads are an indispensable determinant in the design of tall building structures,excessive wind load can cause large residual deformation,structural damage,and human discomfort.In view of the different design of modular building structure and the design of cast-in-place building structure,based on the design of modular building structure,this paper improves the basic wind pressure value of the location of modular building structure construction,in order to carry out windproof research of modular building,with a view to Similar modular building structure design and wind protection provide some references to promote the development of the construction industry.The main research contents are as follows:(1)Taking a proposed 13-story modular structure integrated office building as the research object,the building model was established by using the principle of equivalence.Through the design calculation using PKPM software,the modal analysis results of the structure were summarized.The indicators such as the shear weight ratio,displacement ratio and maximum interlayer displacement angle of the building structure are in line with the relevant specifications of China.(2)In order to further carry out the windproof research of modular structure,increase the basic wind pressure of 0.4kN/m~2 in the 50-year project to 0.8kN/m~2,and comb the basic knowledge of the wind field,select the Davenport wind speed power spectrum,and adopt the AR method to compile the MATLAB calculation program.The wind speed at each floor point of the structure is obtained.The simulated wind speed time history is transformed into a power spectrum.After comparison with the target spectrum,the simulated power spectrum is closer to the target spectrum.Therefore,the simulated wind speed is relatively reliable and can be converted into wind load time history for structural wind vibration analysis.(3)Using the MIDAS GEN finite element software,the simulated wind load time history is applied to the modular building structure model,and the wind-induced response time history analysis of the modular structure is carried out,and the internal force,displacement and acceleration response results of the structure are obtained.(4)Adding a viscous damping wall to the modular building structure to study the damping effect of the viscous damping wall on the modular building under wind load.The results show that the displacement response,acceleration response and maximum of the structure after adding the viscous damping wall The interlayer displacement angle and the floor shear force value are significantly reduced,and the maximum damping rate of each layer is more than 60%,indicating that the setting of the viscous damping wall can effectively control the wind-induced vibration response of the modular building and improve the anti-side performance of the structure.By comparing the two schemes of different positions of the viscous damper wall,it is concluded that the viscous damping wall along the symmetry of the building can achieve better damping effect.