剪跨比对大温差地区的混凝土剪力墙抗震性能指数影响实验

Influence of Shear Spa Ratio to Seismic Preformance of Concrete Shear Wall

地震具有强大的爆发性、破坏性和不稳定性,一旦发生会对社会及人民财产安全等带来不可估计的危害。抗震结构设计应用的目的就是将地震带来的损失降低到最小程度。本文通过对混凝土剪力墙分别在常温下和高温下进行低周反复荷载实验,研究其在常温下及高温下的破坏形态、抗剪承载能力等抗震性能,对不同剪跨比墙体在不同温差下的状态进行分析。针对剪跨比的不同利用有限元模型非线性算法,对抗震性能指数中的抗剪承载力进行计算。实验结果表明剪跨比对温差大的地区混凝土剪力墙体抗剪承载力影响不大,其计算结果与实验结果误差不明显,证明了实验的有效性,为工程施工的抗震需求提供了保证。

Earthquake has sudden, uncertain and devastating to the community and people's lives and security caused huge losses, the purpose of seismic design is to reduce the losses to a minimum. Based on the concrete shear wall at room temperature and high temperature low cyclic loading experiments to study the seismic performance failure modes, shear bearing capacity at room temperature and at high temperatures, respectively, on different walls at different shear span ratio state temperature difference under analysis. For different use of finite element model of the nonlinear algorithm shear span ratio of shear bearing capacity of the seismic performance index is calculated. The results showed little effect on the temperature difference between the shear span ratio of shear bearing capacity of reinforced concrete shear wall area, which is calculated and experimental results is not obvious error, to prove the validity of the experiment, the demand for earthquake construction to provide a guarantee.