新型拼缝叠合双向板受力性能试验研究

关键字：新型,拼缝,叠合,双向板,受力,性能,试验,研究

（1.内蒙古科技大学 土木工程学院，内蒙古 包头  014010；2.中国中建设计集团有限公司，北京  100037）

    摘要：叠合双向板作为装配式结构中重要的水平受力构件，已广泛应用于装配式住宅。由于拼缝的存在，使得叠合双向板的受力性能受到一定影响。为提高装配式住宅中楼板的受力性能，提出一种新型拼缝构造措施的叠合双向板。对该新型拼缝叠合双向板和现浇双向板的受力性能进行试验对比，结果表明，新型拼缝叠合双向板的抗裂度和刚度略低于现浇双向板，但破坏形态包括裂缝展开位置及发展过程基本相同；同时这种新型叠合双向板施工方便，可提高住宅产业化的施工效率。
    关键词：新型拼缝；构造措施；叠合双向板；受力性能；装配式
    中图分类号：TU375.2        文献标识码：A        文章编号：1001-702X（2017）11-0138-05
 

Experimental study on mechanical behavior of composite two way slabs with new type of flat-fell seam
LIU Xiang1，ZHANG Junrui2，DONG Weixing2
（1.School of Civil Engineering，Inner Mongolia University of Science and Technology，Baotou 014010，China；
2.China Construction Engineering Design Group Co. Ltd.，Beijing 100037，China）

    Abstract：The composite two-way slab that as an important horizontal load-carrying member in prefabricated structure，has been widely used in prefabricated houses. But the mechanical properties of composite slab are affected by the existence of flat-fell seam. A new type of superimposed two-way slab with the flat-fell seam structural measure is put forward to enhance the mechanical properties of floors in prefabricated houses. By experiments，the mechanical properties about the superimposed two-way slab with new type of flat-fell seam and cast-in-situ two-way slab are compared and analyzed. The results show that the stiffness and crack resistance of superimposed two-way slab with new type of flat-fell seam are slightly lower than the cast-in-situ two-way slabs，but cracking propagation and position were almost the same. Owing to the easy construction of new superimposed two-way slabs，the efficiency of the housing industrialization can be promoted.
    Key words：new type of flat-fell seam，structural measures，superimposed two-way slab，mechanical behavior，prefabricated