装配式钢筋混凝土柱轴心受压力学性能试验研究

Experimental Study on Mechanical Properties of Prefabricated Reinforced Concrete Columns under Axial Compression

摘要: 进行了装配式钢筋混凝土柱和现浇钢筋混凝土柱的轴心受压力学性能试验研究。通过研究内部混凝土强度和装配式外壳等参数对其破坏形态、荷载–位移曲线、轴向承载力、柱侧混凝土应变及钢筋应变的影响，深入分析了装配式外壳对混凝土柱承载力的效应。试验结果表明：装配式外壳与现浇混凝土之间共同作用良好；装配式钢筋混凝土柱满足承载力需求，且具有较高的安全性能；装配式钢筋混凝土柱与现浇钢筋混凝土柱的破坏形态相近，破坏时均在柱中部呈现混凝土的压溃脱落现象；最后，采用Abaqus有限元分析程序模拟装配式混凝土柱和普通钢筋混凝土轴压受力过程，为其在实际工程中的推广应用提供理论依据。

Abstract: The mechanical properties of prefabricated reinforced concrete columns and cast-in-place reinforced concrete columns under axial compression were studied. The effects of parameters, such as internal concrete strength and prefabricated shell on its failure form, load-displacement curve, axial bearing capacity, the concrete strain on the column side and steel bar strain were studied so that the effect of prefabricated shell on the bearing capacity of concrete columns was deeply analyzed. The test results show that the prefabricated shell and the cast-in-place concrete work well together; the prefabricated reinforced concrete column meets the bearing capacity requirements and has high safety performance; the prefabricated reinforced concrete column and the cast-in-place reinforced concrete column have similar failure patterns, which the concrete collapses and falls off in the middle of the column. Finally, the Abaqus finite element analysis program is used to simulate the axial compression process of the fabricated concrete column and the ordinary reinforced concrete, which provides a theoretical basis for its popularization and application in practical engineering.