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对比分析同一轴压比下的4根不同配筋形式的约束混凝土柱在拟静力试验下的抗震性能(1个为普通约束混凝土柱,3个为区域约束混凝土柱),以得到普通约束和区域约束的差异,同时亦期望得到改用角钢代替角部纵筋筋的区域约束是否能对区域内的混凝土进行良好的约束。试验结果表明,良好的区域约束使得试件有较好的抗震性能,且改用角钢代替角部钢筋的试件对区域内混凝土约束良好,未出现掏空现象。
The seismic behavior of four confined concrete columns under the same axial compression ratio under the pseudo-static test was compared and analyzed (one for the ordinary confined concrete column and the three for the confined concrete column) to obtain the general constraint and Regional differences in the constraints, but also expect to get the use of angle instead of the corner of the longitudinal reinforcement of the area constraints can the concrete within the area well constrained. The test results show that the good regional resistance makes the specimen better anti-seismic performance, and the specimen replaced by the angle steel instead of the corner reinforcement has good restraint on the concrete in the area, and there is no hollowing phenomenon.