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本文介绍分析钢筋混凝土结构受力性能的数值模型,其中纤维梁单元可用于框架结构的弹塑性分析,两端铰接的斜撑压杆单元可较好地模拟填充墙,分层壳单元可用于分析剪力墙和楼板;通过引入约束方程可实现多点位移控制的推覆分析。采用本文介绍的数值模拟方法,以某试验结果为对象,用ABAQUS建立钢筋混凝土结构的数值模型,分析了钢筋混凝土框架填充墙结构和剪力墙结构的抗震性能,验证发现:文中介绍的数值模型具有较好的计算精度和收敛性,可进一步用于钢筋混凝土结构的抗震数值分析。
This paper presents a numerical model for the analysis of the mechanical behavior of reinforced concrete structures. The fiber beam element can be used for the elasto-plastic analysis of the frame structure. The diagonal strut elements with hinged struts at both ends can simulate the infill wall well. The layered shell element can be used for analysis Shear walls and slabs; pushover analysis of multi-point displacement control can be realized by introducing constraint equations. Using numerical simulation method introduced in this paper, a numerical model of reinforced concrete structure is established with ABAQUS, and the seismic performance of RC frame filled wall structure and shear wall structure is analyzed. The results show that the numerical model It has better calculation accuracy and convergence, and can be used in seismic numerical analysis of reinforced concrete structures.