西安建筑科技大学学报(自然科学版)

多塑性铰区设计概念为高烈度区的剪力墙结构抗震设计提供了一种新的思路,为了达到经济与安全的平衡,需要确定多塑性铰区的合理布置.基于Panagiotou等提出的双塑性铰区设计概念,分别对6种不同塑性铰区数量和布置位置的模型进行非线性时程分析,对比罕遇地震作用下不同模型的受力情况.结果表明:塑性铰区数量超过3个时,结构的地震内力基本保持不变; 当塑性铰区数量确定时,均匀布置使结构受高阶振型影响最小; 沿高度方向均匀布置3个塑性铰,会显著减小结构在罕遇地震作用下的内力,提高结构抗震性能,产生良好的经济效益.

The design concept of multi-plastic hinge region provides a new seismic idea of shear wall structure in high seismic areas. In order to achieve the balance of economy and security, it is necessary to make reasonable arrangement for multi-plastic hinge region. Based on the concept of dual-plastic hinge design put forward by Panagiotou et al.,the nonlinear time history analysis was carried out on 6 multi-plastic hinge region models of different quantity and arrangement respectively by comparing the seismic demand of different models. The results showed that when the number of plastic hinge region exceeds three, the seismic demands of the structure almost remain unchanged. When the number of plastic hinge region remained the same, the plastic hinge region located in different position had different influence of seismic internal force. When the plastic hinge region were uniform arranged, it is the most effective for reduction of the effect of higher modes. Arranging three plastic hinge region evenly along the height direction will significantly reduce the seismic demands of the structure under rare earthquakes, enhance the seismic performance of the structure, and produce good economic benefits.

引言
1 分析模型和分析方法
2 结果分析
3 结论

图1 加速度反应谱<br/>Fig.1 Acceleration response spectra

图1 加速度反应谱
Fig.1 Acceleration response spectra

图2 模型平面图<br/>Fig.2 Typical plan of the models

图2 模型平面图
Fig.2 Typical plan of the models

表1 模型基本参数<br/>Tab.1 Main characteristics of the models

表1 模型基本参数
Tab.1 Main characteristics of the models

图3 地震动加速度时程曲线<br/>Fig.3 Seismic accelerogram

图3 地震动加速度时程曲线
Fig.3 Seismic accelerogram

图4 塑性铰区布置形式<br/>Fig.4 Arrangement forms of plastic hinge region

图4 塑性铰区布置形式
Fig.4 Arrangement forms of plastic hinge region

表2 塑性铰区配筋率/%<br/>Tab.2 Vertical reinforcement ratio in the plastic hinge region/%

表2 塑性铰区配筋率/%
Tab.2 Vertical reinforcement ratio in the plastic hinge region/%

图5 BOL090作用下单塑性铰区与多塑性铰区模型弯距包络图<br/>Fig.5 Bending moment envelopes of single plastic hinge region and multi-plastic hinge region models for the record BOL090

图5 BOL090作用下单塑性铰区与多塑性铰区模型弯距包络图
Fig.5 Bending moment envelopes of single plastic hinge region and multi-plastic hinge region models for the record BOL090

图6 RIN228作用下单塑性铰区与多塑性铰区模型弯矩包络图<br/>Fig.6 Bending moment envelopes of single plastic hinge region and multi-plastic hinge region models for the record RIN228

图6 RIN228作用下单塑性铰区与多塑性铰区模型弯矩包络图
Fig.6 Bending moment envelopes of single plastic hinge region and multi-plastic hinge region models for the record RIN228

图7 BOL090作用下单塑性铰区与多塑性铰区模型剪力包络图<br/>Fig.7 Shear force envelopes of single plastic hinge region and multi-plastic hinge region models for record BOL090

图7 BOL090作用下单塑性铰区与多塑性铰区模型剪力包络图
Fig.7 Shear force envelopes of single plastic hinge region and multi-plastic hinge region models for record BOL090

图8 RIN228作用下单塑性铰区与多塑性铰区模型剪力包络图<br/>Fig.8 Shear force envelopes of single plastic hinge region and multi-plastic hinge region models for record RIN228

图8 RIN228作用下单塑性铰区与多塑性铰区模型剪力包络图
Fig.8 Shear force envelopes of single plastic hinge region and multi-plastic hinge region models for record RIN228

图9 BOL090作用下三塑性铰区模型弯矩包络图<br/>Fig.9 Bending moment envelopes of triple-plastic hinge region models for the record BOL090

图9 BOL090作用下三塑性铰区模型弯矩包络图
Fig.9 Bending moment envelopes of triple-plastic hinge region models for the record BOL090

图10 RIN228作用下三塑性铰区模型弯矩包络图<br/>Fig.10 Bending moment envelopes of triple-plastic hinge region models for the record RIN228

图10 RIN228作用下三塑性铰区模型弯矩包络图
Fig.10 Bending moment envelopes of triple-plastic hinge region models for the record RIN228

图11 BOL090作用下三塑性铰区模型剪力包络图<br/>Fig.11 Shear force envelopes of triple-plastic hinge region models for record BOL090

图11 BOL090作用下三塑性铰区模型剪力包络图
Fig.11 Shear force envelopes of triple-plastic hinge region models for record BOL090

图12 RIN228作用下三塑性铰区模型剪力包络图<br/>Fig.12 Shear force envelopes of triple-plastic hinge models for record RIN228

图12 RIN228作用下三塑性铰区模型剪力包络图
Fig.12 Shear force envelopes of triple-plastic hinge models for record RIN228

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备注

引言

1 分析模型和分析方法

2 结果分析

3 结论

期刊信息