摘要
在已完成的16根无粘结预应力混凝土梁低周反复荷载试验的基础上,对其中2根对称布置无粘结预应力筋混凝土梁进行了分析,建立了对称布置无粘结预应力筋混凝土梁的弯矩-曲率恢复力模型。基于此恢复力模型,采用虚梁法编制程序计算了对称布置无粘结预应力筋混凝土梁的弯矩-挠度滞回曲线,分析了日本学者MUGURUMA H所做的对称布置无粘结预应力筋混凝土梁的弯矩-挠度滞回曲线,计算结果和试验结果吻合良好。弯矩-曲率恢复力模型的建立为对称布置无粘结预应力筋混凝土梁的抗震性能研究奠定了基础,具有理论和工程实际意义。
Based on completed tests of sixteen unbonded prestressed concrete beams under low cyclic reversed loading,two unbonded prestressed concrete beams with symmetrical tendons were analyzed. The moment-curvature restoring force model of unbonded prestressed concrete beams with symmetrical tendons was presented on the base of the experiment. According to the model,a program was developed with virtual beam method. Using the program,moment-deflection hysteretic loops of the two tested beams and unbonded prestressed concrete beams with symmetrical tendons tested by Hiroshi MUGURUMA H were calculated analyzed. The calculation results agree reasonably with experiment result. The moment-curvature restoring force model can provide theoretical basis for researching the seismic performance of unbonded prestressed concrete beams with symmetrical tendons and has theory and actual project significance.
出处
《建筑结构》
CSCD
北大核心
2015年第4期68-72,共5页
Building Structure
基金
国家自然科学基金项目(51278179)
