期刊论文

中文

公路交通科技

1002-0268

2013

30

6

49-55

10.3969/j.issn.1002-0268.2013.06.010

湖南省高等学校科学研究项目（重点项目）（12A027）；

本校为第一机构

通过4根预应力混凝土梁的极限承载力试验,分别对其开裂荷载、破坏荷载、控制截面应力、裂缝与变形进行了测试,对比了缓粘结与普通预应力混凝土梁的受力性能差异。从试验结果来看,缓粘结预应力混凝土梁具有较好的受力性能,缓粘结与普通预应力混凝土梁的挠度、应变实测数据变化规律基本一致。跨中截面体内应变测试结果表明,缓粘结与普通预应力混凝土梁的体内应变变化规律吻合较好。跨中截面钢筋应变与混凝土应变测试结果表明,缓粘结与普通预应力混凝土梁的应变变化规律基本一致,缓粘结预应力混凝土梁的实测值相对较大。缓粘结预应力混凝土梁的实际开裂荷载、破坏荷载大于普通预应力混凝土梁,矩形、...

Through testing the ultimate bearing capacities of 4 prestressed concrete beams, the mechanical behavior differences between retard-bonded and ordinary prestressed concrete beams are contrasted by measuring cracking load, failure load, stress of control section, crack and deformation. The test result shows that the retard-bonded prestressed concrete beam has good mechanical behavior, the change regularities of the measured deflections and strains of retard-bonded and ordinary prestressed concrete beams are basically the same. The measured inter...