THE DEFLECTION CALCULATION OF EXTERNALLY PRESTRESSED CONCRETE BEAM
-
摘要: 对国内外体外预应力混凝土梁挠度的计算方法进行了总结与分析,已有计算方法考虑预应力增量及二次影响仅限于短期挠度计算。进一步的分析表明,体外预应力受弯构件挠度计算还需要考虑材料的非线性、混凝土收缩和徐变、高温等因素及各因素之间的相互影响。Abstract: The deflection calculation methods of externally prestressed concrete beam both home and abroad are reviewed.The existing methods have considered tendon stress increase and second-order effect, but limited to shor-t term deflection calculation. Further analysis indicate that other factors such as material non-linear, concrete shrinkage and creep, high temperature performance, as well as the interaction among these factors, should also be considered.
-
Key words:
- external prestressing /
- deflection /
- stress increment /
- second-order effect /
- shrinkage and creep
-
钟善桐.预应力钢结构.哈尔滨:哈尔滨工业大学出版社,1986 [2] 倪元增,钱寅泉,贾艳敏,等.一种新型预应力钢箱梁桥.土木工程学报,1998(1):44~45 [3] 王彤.体外预应力混凝土梁弹性分析与试验研究:[硕士学位论文].哈尔滨:哈尔滨建筑大学,1999 [4] 邱继生,张耀庭,黄恒卫.体外预应力混凝土梁短期挠度的计算.特种结构,2003(1):34~37 [5] GB 50010-2002 混凝土结构设计规范 [6] 熊学玉,黄鼎业.预应力工程设计施工手册.北京:中国建筑工业出版社,2003 [7] Harajli M,Khairallah N,Nassif H.Externally Prestressed Members:Evaluation of Second-Order Effects.Journal of Structural Engineering,ASCE,1999,125(10) [8] 牛斌.体外预应力混凝土梁极限状态分析.土木工程学报,2000(6) [9] Branson D E.Design Procedures for Computing Deflections.American Concrete Institute Journal Proceeding,1968(9):730~742 [10] Naaman A E,Breen J E.External Prestressing in Bridges.SP-120,ACI,Detriot:1990 [11] 杜拱辰.现代预应力混凝土结构.北京:中国建筑工业出版社,1988
点击查看大图
计量
- 文章访问数: 113
- HTML全文浏览量: 7
- PDF下载量: 115
- 被引次数: 0