现浇板框架抗震性能的试验研究及理论分析

发布时间：2018-06-01 22:37

本文选题：钢筋混凝土空间框架 + 现浇板　；参考：《同济大学学报(自然科学版)》2014年02期

【摘要】：以现浇板对空间框架结构抗震性能的影响为主要研究内容,开展了空间框架结构的水平低周反复抗震试验.对框架结构的破坏情况、滞回曲线,以及现浇板纵向钢筋应变、梁端弯矩和现浇板受拉有效翼缘宽度进行了分析.分析结果表明,由于现浇板参与工作,框架无法形成"强柱弱梁"的破坏机制;现浇板框架结构的耗能能力较好;现浇板纵筋应变随层间侧移角的增大而增大,表明板参与框架结构受力的程度逐步增强;现浇板的参与使得框架梁端弯矩提高.最后利用拉压杆模型对现浇板受拉有效翼缘宽度进行推导,所得公式与实际情况符合良好,能够有效反映现浇板参与结构抗震工作的情况,可以用于工程实际使用.
[Abstract]:Taking the effect of cast-in-place slab on seismic performance of spatial frame structure as the main research content, the horizontal low-cycle repeated seismic test of spatial frame structure is carried out. The failure of frame structure, hysteretic curve, longitudinal reinforcement strain of cast-in-place slab, beam bending moment and effective flange width of cast-in-place slab are analyzed. The results show that the failure mechanism of "strong column and weak beam" can not be formed because of the participation of cast-in-place slab, the energy dissipation capacity of cast-in-place slab frame structure is better, and the strain of longitudinal reinforcement of cast-in-situ slab increases with the increase of lateral angle between layers. The results show that the participation of slab in the stress of frame structure increases gradually, and the moment at the end of frame beam increases with the participation of cast-in-place slab. Finally, the effective flange width of the cast-in-place slab is deduced by using the tension-compression bar model, and the formula is in good agreement with the actual situation, which can effectively reflect the situation of the cast-in-place slab participating in the seismic work of the structure, and can be used in engineering practice.
【作者单位】：同济大学土木工程学院;
【基金】：“十一五”国家科技支撑计划(2006BAJ03A07-04)
【分类号】：TU375.4;TU352.11

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