摘要
对部分预应力混凝土 (PPC)构件在使用荷载作用下的裂缝控制进行了讨论 ,指出现今直接计算裂缝宽度众多公式的两个缺点 ,提出了能适用不同保护层厚度和各类预应力筋的裂缝宽度计算公式 ,使PPC构件的弯曲裂缝得以控制。
Flexural crack control of Partially Prestressed Concrete(PPC)members under the service loads is discussed in this paper,and two main shortcomings of many current formulae for calculating crack width of PPC members directly are pointed out.Meanwhile,the formulae used in calculating the crack width of PPC members,suited to the cases with various concrete cover and different type of prestressed tendons,are proposed,so that the flexural cracks of PPC members can be controlled.
出处
《四川建筑科学研究》
2001年第4期31-33,共3页
Sichuan Building Science
基金
铁道部科技司科技研究开发项目
关键词
钢筋混凝土
拉应力
结构设计
PPC构件
弯曲裂缝
partial prestressing
reinforced concrete
crack width and spacing
tensile stress
structural design
