摘要
探讨无粘结预应力混凝土连续梁的受力性能,进行纯无粘结与部分预应力无粘结两跨连续梁的比较试验,分析了无粘结连续梁的变形,无粘结预应力筋极限应力增量,开裂弯矩,极限抗弯承载力以及裂缝分布与塑性铰的形成等问题。
in order to investigate the strutural behavior of continuous concrete beam prestressed with unbonded tendons,full and partially prestressed concrete beams are tested.In this paper,the exprimental results of deformations,ultimate stress increase in unbonded tendons,cracking moment,ultimate bending capacity,as well as the developing of crack and concrete plastic hinge are analyzed.