震后功能可快速恢复联肢剪力墙研究

发布时间：2018-07-01 16:53

本文选题：震后功能可快速恢复 + 联肢剪力墙　；参考：《工程力学》2015年10期

【摘要】：震后功能可快速恢复成为地震工程领域的研究前沿。该文基于损伤控制的思想,提出一种震后功能可快速恢复的联肢剪力墙,由低损伤墙肢和可更换连梁组成。在强烈地震作用下,低损伤墙肢无损坏或轻微损坏,可更换连梁耗散地震能量,震后可通过更换连梁中的消能梁段(或阻尼器)而实现快速修复。试验研究表明,钢管-双层钢板-混凝土组合剪力墙的承载力高,压弯破坏时极限变形能力达1/33,远大于钢筋混凝土剪力墙的变形能力;在1/100位移角时,钢管-双层钢板-混凝土组合剪力墙轻微损坏,可作为低损伤墙肢。该文中可更换钢连梁由中部的消能梁段和两端的非消能梁段组成,大尺寸试件的拟静力试验表明,往复剪切作用下连梁的塑性变形和损伤集中在中部的消能梁段,可更换钢连梁的塑性转角可达0.06 rad,滞回曲线饱满、稳定,通过合理设计连接节点可实现强震后方便更换消能梁段。
[Abstract]:Post-earthquake function can be rapidly restored to the research frontier in the field of seismic engineering. Based on the idea of damage control, this paper presents a kind of jointed shear wall, which can be recovered quickly after earthquake, which is composed of low damage wall limb and replaceable connecting beam. Under the action of strong earthquake, there is no damage or slight damage to the limb of the wall with low damage, and the dissipated seismic energy of the connecting beam can be replaced. After the earthquake, the energy dissipation section (or dampers) in the connected beam can be repaired quickly. The experimental results show that the ultimate deformation capacity of steel tube, steel plate and concrete composite shear wall is 1 / 33, which is much larger than that of reinforced concrete shear wall at 1 / 100 displacement angle, and the ultimate deformation capacity of composite shear wall under compression and bending failure is 1 / 33, which is much larger than that of reinforced concrete shear wall. Steel tube-double-layer steel-concrete composite shear wall is slightly damaged and can be used as a low-damage wall limb. In this paper, the exchangeable steel beam consists of the middle section of the beam and the section of the two ends of the non-energy dissipation beam. The pseudo-static test of the large-size specimen shows that the plastic deformation and damage of the connected beam are concentrated in the middle section of the beam under reciprocating shear. The plastic rotation angle of the replaceable steel connected beam can reach 0.06 rad.The hysteretic curve is full and stable. It is easy to replace the energy dissipation section after strong earthquake by reasonably designing the connection joint.
【作者单位】：清华大学土木工程安全与耐久教育部重点试验室;
【基金】：国家国际科技合作专项项目(2014DFA70950) 清华大学自主科研项目(2012THZ02-1) 国家自然科学基金项目(91315301)
【分类号】：TU398.2;TU352.11

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