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将打包技术应用于结构工程加固领域。进行了6个加固梁试件和1个对比试件的受剪性能试验,分析钢带间距、钢带层数及倒角对承载力及变形性能的影响。结果表明:经预应力钢带加固的试件,在加载过程中,裂缝开展缓慢且发育充分,与未加固试件相比其受剪承载力提高约46%～95%,加固后梁的变形能力大幅提高。通过对3个加固柱试件和1个对比试件的低周反复荷载试验,分析了钢带间距及轴压比对柱水平承载力及变形能力的影响,结果表明,经预应力钢带加固后的柱试件其延性提高约32%～121%,水平承载力提高不明显。
Packaging technology used in the field of structural engineering reinforcement. Six reinforced beam specimens and one comparative specimen were tested for their shearing performance. The influences of strip spacing, strip number and chamfering on the bearing capacity and deformation performance were analyzed. The results show that the specimens strengthened with prestressed steel strip have a slow and well developed fracture during loading, and the shear capacity increases about 46% -95% compared with un-strengthened specimens. The deformation capacity of the beam after reinforcement A substantial increase. The effects of strip spacing and axial compression ratio on the horizontal bearing capacity and deformation capacity of the columns were analyzed by low-cycle repeated loading tests on three reinforced columns and one comparative sample. The results show that the prestressed steel strip reinforcement The post-column specimen ductility increased by about 32% ~ 121%, horizontal bearing capacity increased not obvious.