Performance-based Design Method And Study On Seismic Behavior For Prefabricated Frame Bracing Wall

The frame bracing wall proposed by the national "13th Five-Year" key research and development plan,"high efficiency reinforcement and performance-based design theory of precast concrete members"(2016YFC0701402),has the advantages of light weight,simple force,fast construction speed,quick installation and so on.In order to study the performance-based design method and seismic behavior of the frame bracing wall,combined with the 14 wall test data and results of the previous project group,the low cycle reciprocating load test of 8 frame bracing wall specimens is supplemented,and the performance standard requirements and the performance-based design methods of the component layer are preliminarily discussed.The main conclusions are as follows:1.The test results of the frame bracing wall with the height to width ratio of 0.58 show that the structural members are developed from cracking and crack to the fracture,the main cracks are parallel to the diagonal line,and the failure modes are different with the variation of the height to width ratio,but the failure mode of the cross pole is formed at last,and the yield displacement of the frame bracing wall is less influenced by the axial compression ratio.Limited displacement and failure displacement are affected by axial compression ratio.2.The research shows that the core of the performance-based design method is to determine the overall target requirements and the design performance level of the building,clarify the overall performance target and design performance requirements,study and analyze the function level and function standard,study the performance level and performance standard,and put forward the first level performance standard and the two level performance.Requirements for standard and three level performance standards.3.Through the analysis of the test data,the interlayer displacement angle which meets the requirements of the first class performance standard and the requirements of the resistance requirements to meet the level of the two grade performance standard frame bracing wall are put forward.Specific regulation:when normal use,the interlayer displacement angle is less than 1/780,and the bearing capacity is not yielding as the performance index.When the repair can be used normally,the interlayer displacement angle is less than 1/280,and the bearing capacity is not more than the peak load.When preventing the collapse,the interlayer displacement angle is 1/110,and the bearing capacity decreases with the peak value.Less than 85%is the performance index.Through the analysis of the test data,the displacement angle limit of each stage of the frame bracing wall is obtained.In the follow-up study,the performance index of the frame bracing wall members under different performance levels should be established by theoretical analysis.