摘要
本文对预应力混凝土受弯构件的裂缝控制设计方法作了分析，指出了原规范（ＴＪ１０－７４）采用抗裂安全系数设计方法的缺点，对现行规范（ＧＢＪ１０－８９）的设计方法作了补充解释，提出了三种裂缝控制情况及其相应的设计公式，将限制裂缝宽度与限制混凝土名义拉应力两个设计表达式作了沟通。
The paper analyses the method for design of prestressed concrete flexural mem-bers according to requirements of crack control level ,and points out the shortcoming in the designmethod using crack resistant safety coefficient in the primary code of TJ10-74. The explanation ofdesign method in current code of GBJ10-89 has been supplemented ,hence ,the three cases of crackcontrol with corresponding design formula are presented. The two design expressions of the re-striction on crack width and the nominal tensile stress in concrete have been linked up.
出处
《建筑科学》
1994年第3期59-68,共10页
Building Science
