Simple Harmonic Excitation Numerical Analysis And Experimental Study Of Space Bidirectional Beam String Structure

Beam String Structures is a new kind of space structure and a kind of typical soft hybrid system. Its structure is made up of the string, and bending compression struts components, and it is a self-balance system. through the string of prestress to improve the bending stress of the performance of the pressureTop chord steel girder Beam String Structures takes as space bidirectional Beam String Structures the structure one kind of exceptional case. Function's power response research is still not saw under simple harmonics load in domestic. This article reviewed the structure history development of Beam String Structures simply on the consult massive domestic and foreign related literature's foundation, the project application and the research present situation, and has made the meaningful discussion for function power response of the top chord section Beam String Structures under simple harmonics load.Based on the finite element theory, the work involved in Beam String Structures structure with relevant finite element calculation methods of are briefly introduced. Through the finite element analysis software ANSYS, space Beam String Structures two-way bent steel structure is worked numerical analysis.In order to study Beam String Structures steel structure in bend the harmonic loads, consider the dynamic response of the structure of prestressed and geometric nonlinearity influence, the structure is designed for the static structure analysis and modal analysis, linear harmonic response analysis and nonlinear transient analysis, and summary harmonic dynamic loads of structure. Then through the 1/4 scale model test confirmaed, the model design project includes similar calculation and to determine the model material, the section size. According to the design requirements of model test made Beam String Structures rule model, fixed hinge joints bearings rolling bearings. The data is collected and analysed.Through numerical analysis and model test data processing, the dynamic response of the space Beam String Structures two-way type steel bend is grasped, and some significant suggestion is given about load conditions of work spatial structure roofing under harmonic excitation.