双向自支撑叠合板受力破坏机理及试验研究

随着我国新型建筑工业化的推进，作为工业化主要构件的叠合板得到了大力的发展，但是，多数叠合板拼缝处的钢筋构造复杂，生产、施工较为困难，为此，针对一种简单拼缝构造方式的双向自支撑叠合板进行了全过程受力机理研究，同时对该种叠合板进行了足尺试验，并与同样大小的双向现浇板进行了试验对比，结果表明，该种叠合板的破坏形态与现浇板基本相同。在此基础上，结合数值模拟技术，着重研究了该种叠合板的双向受力机理，裂缝开展及分布，拼缝处钢筋的粘结滑移及传力性能。并系统地对该种叠合板在多种情况下的破坏机理进行了分析，为该种叠合板的设计和应用提供了很多有益的参考。

Failure mechanism and experimental research of two-way self supporting composite plate

Along with the advancement of new type industrialization construction in our country, the composite plates as a main component of industrialization had been large developed. But, the rebar in piece of most composite plates were complex so as to produce and construct them difficultly. So, the whole loading process of two-way self supporting composite plate with a kind of simple piece was studied, meanwhile the composite plate was experimentally studied and compared with the experiment of the same size casting plate. Results indicated that failure form of the composite plate was similar to the casting plate. Based on these researches, Combined with the numerical simulation technology, Two-way stress mechanism, crack developing and distribution, bond and slip and stress-transfer mechanism of the rebar in the piece were studied carefully for the type of composite plate. Failure mechanisms of the composite plate in many cases were systematically analyzed and many useful references were provided for this composite plate.