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挫屈束制支撑耐震性能优劣与否与脱层材料性能有密切关系,首先提出了一种估算脱层不完全因子的方法,利用4组分别使用不同脱层材料的挫屈束制支撑进行构件试验;研究结果表明以黏性橡胶作为脱层材料具有可靠性、经济性与优良的施工性。特别介绍了地震工程研究中心近期所研发的槽接式挫屈束制支撑,并通过3组实尺寸构件试验验证了其耐震性能;测试构件包含一组长度为12.5m,最大抗压强度超过16800kN,核心消能段应变量达3.5%的构件。试验结果表明,新研发的槽接式挫屈束制支撑经济效益极高,迟滞消能行为良好稳定,具有优良的耐震性能,各组试体于试验停止前所累积的总非线性变形量皆超过400倍斜撑屈曲位移量;研究亦显示,非线性结构分析软件PISA3D可准确预测其受力与变形反应。
The pros and cons of the buckling restraint beam system is closely related to the performance of the delaminated material. First, a method of estimating the imperfection factor of delamination is proposed. Four sets of buckling beam restraints with different delamination materials are respectively used Component test; the results show that the sticky rubber as a delamination material with reliability, economy and excellent workability. In particular, the slotted beam restraint beam restraint developed by the Earthquake Engineering Research Center was introduced in detail. The seismic performance was verified by three real-scale component tests. The test component consisted of a series of specimens with a length of 12.5m and a maximum compressive strength of more than 16800kN , Core energy dissipation section should reach 3.5% of the components. The experimental results show that the newly developed slotted beam restraint beam system has high economic benefit, good hysteretic energy dissipation behavior and excellent seismic performance. The total nonlinear deformation accumulated before the test stops More than 400 times the amount of diagonal buckling displacement; research also shows that non-linear structure analysis software PISA3D can accurately predict the stress and deformation response.