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试验表明:对称设置斜向钢筋的小跨高比复合配筋连梁具有良好的抗震性能,在建立并求解水平地震作用下该连梁中由混凝土主斜压杆、次斜压杆、对角斜筋拉、压杆和菱形筋拉杆等组成的超静定拉杆-压杆联合工作受力分析模型基础上,通过对连梁箍筋参与的传力机构分析,提出了由箍筋和混凝土次生斜压杆组成的箍筋桁架宏模型,建立了该模型中各箍筋拉杆和混凝土压杆的几何及变形协调方程、物理方程和平衡方程等共26个计算式和分析程序,2个试验试件的算例对比分析结果显示,该模型能反映连梁屈服后各受力阶段箍筋的受力状态,且计算结果具有较好的准确性。
The test results show that the small span ratio composite reinforced concrete connecting beam with symmetrical diagonal reinforcement has good anti-seismic performance. When the horizontal seismic action is established and solved, the connecting beam is composed of the main bar, secondary bar and diagonal bar Based on the analysis model of the joint force of the statically indeterminate tie rod and the tie rod composed of diagonal bars, bar and diamond bar, A total of 26 formulas and analysis programs of geometric and deformation coordination equations, physical equations and balance equations of the stirrup tie rods and concrete compaction bars in this model were established. Two experiments The comparative analysis of the specimen shows that this model can reflect the stress state of the stirrups under the stress of each beam after yielding, and the calculation results have good accuracy.