反复荷载下体外预应力加固框架性能研究

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基金项目:

国家自然科学基金资助项目(编号:50378015)

FRAME STRENGTHENED WITH EXTERNAL PRESTRESSING STEEL TENDONS UNDER CYCLIC LOAD

1.
1. College of Civil Engineering,Southeast University Nanjing 210096;
2.
2. Appraisal &Strengthening Center of Engineering Structure,Nanjing Un iversity of Industry Nanjing 210029

摘要: 体外预应力加固技术将卸载和加固结合在一起,较好地发挥新老结构共同工作的能力,具有多种优点,所以日益得到广泛的应用,但目前对体外预应力加固框架结构在低周反复荷载下的性能进行的研究较少。在对钢筋混凝土框架进行试验的基础上采用非线性有限元法编制了相应程序对结构进行分析,计算结果与试验结果比较吻合,表明采用的分析方法具有一定的适用性与准确性,从中得到一些结论。
- 反复荷载 /
- 体外预应力 /
- 框架 /
- 有限元
Abstract: Two reinforced concrete frames under cyclic horiz ontal loading were tested. One of which was strengthened with external prestress ing steel tendons. The effect of strengthening frame with external prestressing steel tendons on seismic ability was studied. A program using nonlinear FEM was coded to analyse that. The analytic result fit the experimental result well. Som e conclusions were gotten from that.
- cyclic load /
- external prestress /
- frame /
- FEM