缓粘结预应力混凝土梁受弯试验研究  

EXPERIMENTAL STUDY ON RETARD-BONDED PRESTRESSED CONCRETE BEAMS IN BENDING

作　　者：尚仁杰[1] 张强[1] 周建锋[2] 曾昭波[2] 

机构地区：[1]中国京冶工程技术有限公司,北京100088 [2]中冶集团建筑研究总院,北京100088

出　　处：《工业建筑》2008年第11期24-27,共4页Industrial Construction

基　　金：财政部资助项目

摘　　要：介绍了缓粘结预应力筋的构造和工作原理,通过3根缓粘结预应力混凝土梁的受弯试验研究了其开裂弯矩、极限弯矩、裂缝分布和荷载-挠度关系等缓粘结预应力混凝土梁的受力性能,并与有粘结和无粘结预应力理论计算结果进行了对比分析,得出缓粘结预应力混凝土梁的受弯规律,为缓粘结预应力混凝土梁的设计计算提供了参考。The structure and the working principle of the retard-bonded prestressing tendon were introduced. The cracking moments, ultimate moments, crack distribution and load-deflection graphs of retard-bonded post prestressed concrete beams were studied through the experiment of 3 beams. The experimental results were compared with the theoretical and experimental results of bonded and un-bonded prestressed concrete beams, by which the bending law of retard-bonded post prestressed concrete beam was obtained and can be referenced in the designing of retard-bonded pose prestressed concrete beams.

关 键 词：缓粘结 预应力混凝土 试验研究 

分 类 号：TU378.2[建筑科学—结构工程]