集中荷载作用下无粘结预应力混凝土梁的试验研究

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英文篇名：Experimental study of unbonded prestressed concrete beams under concentrated load 中文刊名：合肥工业大学学报(自然科学版) 英文刊名：Journal of Hefei University of Technology(Natural Science) 作者：刘丰 ; 陈晓宝 英文作者：LIU Feng 1 ; CHEN Xiao bao 2 (1. Shcool of Civil Engineering ; Guangzhou University ; Guangzhou 510405 ; China ; 2.Shcool of Civil Engineering ; Hefei University of Technology ; Hefei 230009 ; China) 中文关键词：无粘结预应力混凝土 ; 连续梁 ; 试验研究 英文关键词：unbonded prestressed concrete ; continuous beam ; experimental study 出版日期：2001-10-28 机构：广州大学土木工程学院,合肥工业大学土木建筑工程学院 广东广州510405 ,安徽合肥230009 年：2001 期：05 出版单位：合肥工业大学学报(自然科学版)

摘要

针对无粘结预应力梁的特点 ,对集中荷载作用下抛物线布筋的无粘结部分预应力混凝土简支梁和连续梁进行对比试验 ,分析了它们的受弯性能。结果表明 ,合理配筋的两跨同时对称加载的连续梁能在形成充分塑性铰后而破坏 ,无粘筋极限应力增量有所提高 ,而连续梁的极限承载力有较大提高。
Two continuous beams have been compared with two simply supported beams through experimental study of the beams of unbonded prestressed concrete with tendons of parabolic curve profile under concentrated load.Tests on bending behavior show that two span contiuous beam with certain reinforcement index under symmetric loads may fail when three plastic hinges occur. Compared with the simply supported beams, the continuous beams have gained a little higher increment of ultimate stresses and a much higher ultimate bending capactity.

引文

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