预应力混凝土空心叠合板试验

针对现有的一般预应力空心叠合板楼盖板较厚、自重较大等缺点，提出了一种新型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，分析了这种叠合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。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；其开裂弯矩、极限承载力、挠度可按《混凝土结构设计规范》（GB50010--2002）进行计算，为这种叠合板的设计和工程应用提供了依据。

Experiment on Prestressed Concrete Hollow-core Composite Slabs

The existing prestressed concrete hollow core composite floor had some disadvantages, such as thicker slab, larger weight, etc. A new kind of prestressed concrete hollow-core composite slab was 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, ultimate bearing capacity and deflection were analyzed. The reasons of higher crack load and ultimate bearing capability were investigated. The results indicate that this kind of prestressed concrete hollow-core composite slab has better anti-crack behavior and higher ultimate bearing capacity. According to the Code for Design of Concrete Structures （GB 50010--2002）, the crack moment, ultimate bearing capacity, deflection can be calculated, which provide a basis for the design and application of this kind of composite slab.