Diamond grid braced frames structure(DBF) is a new type of lateral force support structure, which has greater stiffness, bearing capacity and ductility under the condition of ensuring the safety of side columns. Meanwhile, compared with the traditional support system, it greatly reduces the thickness of the supporting surface, which facilitates the combination of the steel structure housing support structure and the peripheral protection. Diamond grid braced frames is proposed in this paper the lateral stiffness of the supporting frame structure and the lateral bearing capacity formula, at the same time, based on the principle of conservation of energy, put forward the diamond mesh support frame structure seismic design method based on performance, considering the negative impact of the support of beam-column through primary yield mechanism for plastic design method of yield components, the capacity design method for the yield components. This method is used to design a 12-storey Diamond grid braced frame structure, and the correctness of the method is verified by comparing the dynamic time history analysis with the traditional cross support frame structure, which provides a reference for the engineering design of Diamond grid braced frame structure.
Key words
performance-based plastic design（PBPD)method /
braced frame /
target drift /
global failure model /
design method
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