高层再生混凝土框-剪结构动力弹塑性分析

发布时间：2018-04-18 02:22

本文选题：再生混凝土 + 框-剪结构　；参考：《同济大学学报(自然科学版)》2017年05期

【摘要】：在对再生混凝土材料性能深入分析的基础上,根据再生和普通混凝土材料非线性性能的差异,探讨了再生混凝土弹塑性分析时软件选取、材料本构模型确定、结构构件模型选取等关键问题.在此基础上完成了一再生混凝土框架-剪力墙结构高层试点工程的动力弹塑性分析,并与相应的普通混凝土结构模型的分析结果进行了对比.结果表明,当再生粗骨料取代率不大于30%时,再生混凝土结构模型在大震作用下其弹塑性层间位移角虽然较普通混凝土模型有所增大,但仍可满足抗震设防第三水准"大震不倒"的要求.再生混凝土结构由于结构弹塑性变形及刚度滞回退化所耗散的能量占总能量的32.8%,耗能能力较相应的普通混凝土结构下降9.6%.根据构件的性能状态可见,高层再生混凝土框-剪结构符合"强柱弱梁"、"强墙肢弱连梁"等抗震设计基本要求.
[Abstract]:On the basis of in-depth analysis of the performance of recycled concrete material, according to the differences of regeneration and material nonlinear properties of ordinary concrete, the recycled concrete elastic plastic analysis software selection of material constitutive model, determine the key problems of the structure component model selection. Based on the dynamic elastoplastic analysis of a recycled concrete frame high rise shear wall structure of the pilot project, and analysis and model of ordinary concrete structure of the corresponding results were compared. The results showed that when the replacement ratio of recycled coarse aggregate is not greater than 30%, the recycled concrete structure model under large earthquake and the elastic-plastic displacement angle while compared with ordinary concrete model increased, but can satisfy the seismic fortification level third "earthquake does not fall". The recycled concrete structure due to structural elastic-plastic deformation and stiffness degradation hysteretic dissipated energy of the total energy The amount of 32.8%, ordinary concrete structure energy dissipation capacity than the corresponding decline in 9.6%. based on the performance of component visible, high-rise recycled concrete frame shear wall structure with "strong column weak beam", "strong basic requirements for seismic wall weak beam" design.

【作者单位】：同济大学土木工程学院;
【基金】：国家杰出青年科学基金(51325802) 上海市科委创新行动计划(14231201300)
【分类号】：TU398.2

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