摘要
针对现有的一般预应力空心叠合板楼盖板厚较大,自重较大等缺点,提出了一种新形式的预应力混凝土空心叠合板,通过对3块简支板,3块简支叠合板和1块两跨连续叠合板进行静力荷载试验,分析了这种板在静力荷载作用下的裂缝、承载力、挠度等特点,研究了其开裂荷载和极限承载力较高的原因。试验结果表明这种预应力空心叠合板具有良好的抗裂性能和较高的极限承载能力,建立了开裂弯矩、极限承载力、挠度的计算方法,为这种叠合板的设计和工程应用提供了依据。
The existing prestressed concrete hollow-core composite floor have some disadvantages, such as thicker slab, larger deadweight, etc. In this paper, a new kind of prestressed concrete hollow-core composite slab is put forward. Based on the results of static loading test of 3 prestressed concrete hollow-core slabs, 3 prestressed concrete hollow-core composite slabs and 1 composite continuous slab, the crack, the ultimate carrying capability and the deflection are analyzed. The reasons of higher crack loads and ultimate carrying capability are presented in this paper. The results indicate that this kind of prestressed concrete hollow-core composite slabs have better crack resistance and higher ultimate carrying capability , the calculation way of cracking moment, ultimate carrying capability, deflection were established, which provide a basis for the design and application of prestressed concrete hollow-core composite slabs.
出处
《建筑技术开发》
2007年第6期10-13,共4页
Building Technology Development
关键词
预应力空心板
叠合板
裂缝
承载力
挠度
Prestressed hollow-core slabs
Composite slabs
Crack
Carrying capability
Deflection
