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STUDY ON RIGID FRAME-EQUIVALENT BRACE MODEL OF MULTI-RIBBED SLAB STRUCTURE
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摘要: 在前期试验和理论研究的基础上，将密肋壁板结构中的密肋复合墙板等效为整体斜撑，提出结构的刚架-等效斜撑模型，并结合试验数据确立了该模型的主要参数及塑性铰的设定。采用该模型建模对前期振动台模型试验进行了模拟，结果表明，二者在各层加速度时程反应值、反应波形以及监测点的最大侧向位移方面吻合较好，说明刚架-等效斜撑模型能较好地模拟结构的动力特性及弹塑性变形情况，可用于密肋壁板结构的弹塑性时程反应分析及非线性变形验算。Abstract: According to the previous researches and experiments,the rigid frameequivalent brace model of multi-ribbed slab structure is put forward,in which the multi-ribbed composite wall is equivalent to a whole diagonal brace.Based on the previous tests,the main parameters and the plastic hinge settings of the model are established.By using this model,a shaking table test of a multi-ribbed slab structure model is simulated.And the calculation results tally well with the experimental results in acceleration time history,response waveform and the maximum displacement of monitoring points.The results indicate that the rigid frame-equivalent brace model can better reflect the dynamic characteristics and elastic-plastic deformation situation of the prototype structure.Thus this model can be applied to elastic-plastic time-history analysis and nonlinear deformation checking of multi-ribbed slab structure.
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