【作者】 王晓辉； 张鹏； 薛伟辰；

【Author】 WANG Xiaohui, ZHANG Peng ,XUE Weichen ( Tongji University, Shanghai 200092, China Guangxi University of Technology, Liu Zhou 545006,China)

【机构】 同济大学； 广西工学院；

【摘要】 对国内外体外预应力混凝土梁的研究成果进行了较为系统的分析总结。进行3根体外预应力筋混凝土粱单调全过程试验,提出了体外预应力GFRP筋预应力损失的设计建议,给出了体外预应力GFRP筋应力增量和极限应力的计算公式,并编制了相应的计算程序,程序计算结果与试验结果吻合良好。更多还原

【Abstract】 The existing research achievements, at home and abroad, on external prestressed concrete beams are systematically analyzed in this paper. On the basis of experiments of three external prestressed concrete beams under monotonous loads, prestressing loss of external tendons is studied and the corresponding design suggestions are put forward, a formula is prestrented for calculating stress increment and ultimate increment of external tendons, and the corresponding program is developed. The calculations by the program are in good agreement with test results.更多还原