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首页> 外文期刊>Journal of Earthquake Engineering >DYNAMIC BEHAVIOUR OF REINFORCED CONCRETE FRAMES DESIGNED WITH DIRECT DISPLACEMENT-BASED DESIGN
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DYNAMIC BEHAVIOUR OF REINFORCED CONCRETE FRAMES DESIGNED WITH DIRECT DISPLACEMENT-BASED DESIGN

机译：直接基于位移设计的钢筋混凝土框架的动力特性

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摘要

The Direct Displacement-based Design methodology is applied to six reinforced concrete tube-frame structures and tested using inelastic time-history analyses. Using the established design method inter-storey drifts are found to exceed assumed drift limits, and a series of changes to the design displacement profiles and lateral force distribution are proposed to improve agreement. These changes are then applied to the six frames and further time-history analyses carried out at different earthquake intensities. The inter-storey drift behaviour is found to be significantly improved, with code-based drift limits consistently satisfied. Finally a revised form of the Modified Modal Superposition is proposed to account for higher-mode amplification of column shear forces, while a simple intensity-dependent scaling factor to be applied in the capacity design process is developed for column bending moments. The suggested equations are applied to the frame designs, and found to be in acceptable agreement with time history results at a range of earthquake intensities.
机译：基于直接位移的设计方法应用于六个钢筋混凝土管框架结构，并使用非弹性时程分析进行了测试。使用建立的设计方法，发现层间漂移超过了假定的漂移极限，并提出了一系列设计位移曲线和侧向力分布的变化，以提高一致性。然后将这些更改应用于六个帧，并在不同的地震强度下进行进一步的时程分析。发现层间漂移行为得到了显着改善，始终满足基于代码的漂移限制。最后，提出了修改的模态叠加修正形式，以解决柱剪力的高模放大问题，同时为柱弯矩设计了一种简单的，取决于强度的比例因子，该比例因子将用于容量设计过程中。所建议的方程式已应用于框架设计，并在一定地震烈度下与时程结果相吻合。

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