【摘要】 收集、整理了１９９７年以来近２０年间国外预应力混凝土开孔梁力学特性研究的主要实验结果；在综合、对比分析的基础上，用多元统计回归方法得到相应的回归方程；并提出了根据回归方法进行开孔梁设计的基本要点。所得结论对预应力开孔梁设计及其特性的进一步研究具有重要的参考价值。更多还原

【Abstract】 The method of regression is used for analysing and designing the prestressed concrete beams withopenings by synthesising and evaluating the results of tests which are gathered from literatures in the abroadjounals since 1997.Regression equations,which stands different states and stages of the beams by force,are abtained,and designing procedures are put forward,too, The conclusions raised in this paper areimportant for reference to study further the characteristics of prestressed beams with openings.更多还原