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对预压弹簧自恢复耗能支撑进行了低周往复加载试验及数值模拟分析,结果表明,二者滞回曲线吻合较好,自恢复耗能支撑具有稳定的旗形滞回特性、良好的耗能能力和复位能力。对自恢复耗能支撑分别通过刚接和铰接与结构组成的支撑子结构进行了抗震性能数值模拟分析。结果表明:铰接支撑子结构具有更好延性、更稳定旗形滞回性能、更高承载力,对自身残余变形具有更好的控制能力;刚接支撑受力性能受连接板传递弯矩影响较大,铰接支撑耗能能力是刚接支撑的1.4~2.3倍,对结构的耗能贡献比刚接支撑提高了34%~40%,铰接支撑最大残余变形为刚接支撑的25.5%,基本消除了残余变形。
The low-cycle reciprocating loading test and numerical simulation of prestressed spring self-restoring energy-dissipative support are carried out. The results show that the two curves agree well with each other, and the self-restoring energy dissipating support has stable flag-shaped hysteresis and good dissipation Ability and ability to reset. The seismic performance of the self-restoring energy-dissipating support was analyzed by numerical simulation of the support substructure consisting of the hinged joint and the structure respectively. The results show that the hinged support substructure has better ductility, more stable flag hysteresis, higher bearing capacity and better control over the residual deformation of the hinged support substructure. Large, the energy consumption of hinged support is just 1.4 to 2.3 times that of the first support, the contribution to the energy consumption of the structure is increased by 34% ~ 40% compared with that of the first support only, and the maximum residual deformation of the hinged support is 25.5% of the first support, basically eliminated The residual deformation.