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基于共同屈服的普通钢筋体外预应力加固RC梁理论与试验研究
引用本文:赵更歧,赵大鹏,皱振斌,李庆,王庆辉. 基于共同屈服的普通钢筋体外预应力加固RC梁理论与试验研究[J]. 工程抗震与加固改造, 2019, 41(4): 128-132
作者姓名:赵更歧  赵大鹏  皱振斌  李庆  王庆辉
作者单位:郑州大学土木工程学院,河南郑州,450002;郑州市瑞杰结构加固工程有限公司,河南郑州,450002
摘    要:对普通钢筋体外预应力加固RC梁受弯性能进行了研究,推导基于体外钢筋与体内钢筋共同达到屈服时,初始张拉力与原梁初始受力和屈服荷载增量及体外筋面积的关系及计算方法,并结合试验与该计算方法进行对比,对比表明,理论与试验结果吻合良好。

关 键 词:结构加固  体外预应力  共同屈服  普通钢筋  几何非线性

Theoretical and experimental study on external prestressing strengthening RC beams with ordinary rebar based on simultaneous yielding
Zhao Geng-qi,Zhao Da-peng,Zhou Zhen-bin,Li Qing,Wang Qing-hui. Theoretical and experimental study on external prestressing strengthening RC beams with ordinary rebar based on simultaneous yielding[J]. Earthquake Resistant Engineering and Retrofitting, 2019, 41(4): 128-132
Authors:Zhao Geng-qi  Zhao Da-peng  Zhou Zhen-bin  Li Qing  Wang Qing-hui
Affiliation:(School of Civil Engineering, Zhengzhou University Zhengzhou 450002,China;Zhengzhou Ruijie Structure Re-enforcing Engineering Co.,Ltd,Zhengzhou 450002,China)
Abstract:In this paper,the bending behavior of RC beams strengthened by external prestressing with ordinary steel bars is studied. The relationship between the initial tensile force and the stress of initial rebars and yield load increment of the beam and the area of the external rebars is calculated based on simultaneous yielding. Combined with the test and the calculation method,the comparison shows that the theory agrees well with the experimental results.
Keywords:structural reinforcement  external prestressing  simultaneous yielding  ordinary rebar  geometric non-linearity
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