Buckling‐restrained brace using steel mortar planks; performance evaluation as a hysteretic damper
Buckling‐restrained brace using steel mortar planks; performance evaluation as a hysteretic damper
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DOI：
10.1002/eqe.608
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发表时间：
2006-11
影响因子：
4.5
通讯作者：
M. Iwata;M. Murai
中科院分区：
文献类型：
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作者：
M. Iwata;M. Murai
作者开发了一种屈曲约束支撑，可以增加芯板两端的设计自由度，并进行严格的质量控制，同时即使在高应变下也能提供稳定的滞后特性。屈曲约束支撑可以通过将覆盖有无粘结材料的芯板焊接到作为约束部件的一对砂浆填充槽钢（钢砂浆板）上来形成。使用这种方法可以直观地确认砂浆填充的状态，也有助于标准化结构构件和构件质量控制。制作了具有不同钢砂浆板高度的屈曲约束支撑试件，以调整约束力，沿着具有不同芯板宽厚比的试件。试验结果揭示了支撑的滞回特性，以及它们的累积塑性应变能、弹塑性特性和刚度特性。提出了一个性能评估公式，以及屈曲约束支撑设计方法，利用测试结果。版权所有© 2006约翰威利父子有限公司。
The authors developed a buckling‐restrained brace that enables increased design freedom at both ends of the core plate and strict quality control while providing stable hysteresis characteristics even under high strains. The buckling‐restrained brace can be formed by welding a core plate covered with unbonded material to a pair of mortar‐filled channel steels (steel mortar planks) as a restraining part. The use of this approach enables visual confirmation of the status of the mortar filling and also facilitates standardizing structural members and member‐by‐member quality control. Specimens of a buckling‐restrained brace with different steel mortar plank heights are fabricated to adjust the restraining force, along with specimens with different core plate width‐to‐thickness ratios. The tests were conducted to reveal the hysteretic characteristics of the braces, as well as their cumulative plastic strain energy, elastoplastic properties, and stiffening properties. A performance evaluation formula as well as a buckling‐restrained brace design method using the test results is proposed. Copyright © 2006 John Wiley & Sons, Ltd.