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为了能对这种细晶钢筋增强混凝土结构的抗震性能有较为准确的定量分析,采用ANSYS有限元软件对十字形梁柱组合件进行了受力全过程的非线性有限元分析,并将分析结果与试验结果进行对比,从而进一步了解细晶高强钢筋混凝土梁柱组合件在反复荷载下的受力性能特点。有限元分析所得裂缝分布、钢筋应力分布以及梁端力-位移曲线反映出,高强钢筋混凝土框架梁柱组合件在低周反复荷载作用下梁端塑性铰区裂缝开展充分,钢筋应力最大,核芯区内钢筋未发生粘结破坏。有限元分析结果较好的描述了试件的受力特点和过程。
In order to have a more accurate quantitative analysis of the seismic performance of the fine-grained reinforced concrete structure, finite element software ANSYS was used to carry out the nonlinear finite element analysis of the whole cross-section beam-column assembly. The analysis results Compared with the test results, we can get a better understanding of the mechanical properties of the fine-grained high-strength reinforced concrete beam-column assemblies subjected to repeated loading. The crack distribution, the stress distribution of the reinforcement and the force-displacement curve of the beam reflected by the finite element analysis show that the cracks in the plastic hinge zone of the beam end are fully developed under the low cyclic loading, the stress of the steel bar is the maximum, Reinforced bond does not occur damage. Finite element analysis results better describe the force characteristics of the specimen and process.