后掺骨料混凝土中长柱恢复力模型研究

Restoring Force Model of Middle-long Concrete Columns Made by Post-filling Coarse Aggregate Mixing Procedure

后掺骨料工艺是一种将抛填骨料技术应用于建筑结构工程领域的新型绿色混凝土施工工艺,为更充分地研究后掺骨料混凝土中长柱构件的抗震性能,基于六组后掺骨料混凝土中长柱试件的拟静力试验数据,运用拟合方法建立了三折线骨架模型,得出了加载与卸载刚度的计算方程,制定了相应的滞回规则,对比了由模型计算得到的骨架曲线及滞回曲线与真实试验结果间的误差。后掺骨料混凝土中长柱恢复力模型的精确性较好,基于该模型所计算求得的骨架曲线以及滞回曲线同试验结果间的相似度较高,具备出色的实用价值,可为其非线性特征的分析提供参考。

The post-filling coarse aggregate mixing procedure is a new type of green concrete construction process that applies the throw-filling aggregate technology to the field of building structural engineering.In order to analyze the seismic performance of middle-long concrete columns members made by post-filling coarse aggregate mixing procedure deeply based on the quasi-static test data of six groups of middle-long concrete columns made by post-filling coarse aggregate mixing procedure specimens,a three-line skeleton model was established by using the fitting method,the calculation equations of the loading and unloading stiffness were obtained,and the corresponding hysteresis rules were formulated.The errors between the skeleton curve and hysteresis curve calculated by the model and the real test results are compared.The restoring force model of middle-long concrete columns made by post-filling coarse aggregate mixing procedure has good accuracy.The similarity between the skeleton curve and hysteretic curve calculated based on the model and the test results is high,which has excellent practical value and can provide a reference for the analysis of its nonlinear characteristics.