The Experimental Study on Mechanical Performance of Multi-Span Column-Supported Assembly Box Concrete Hollow Floor

Abstract:

Assembly box concrete hollow floor sructure is a new-style whole structure that are constituted by the a cross section of a concrete box composed of small prefabricated components (concrete superposition box) and a cast-in-place concrete rib beam.The internal force distribution law was analyzed in this paper, based on the static load experiment with a multi span column-supported assembly box concrete hollow floor.The findings prove that the prefabricated boxs and cast-in-situ concrete ribbed beams are able to form a whole to jointly bear external forces, that the internal force distribution law is basically the same with the solid cast-in-situ concrete floor with no beams, and that the floor structure can be simplified to the column strip and middle strip.The specific distribution ratios between the minus moment and the plus moment of the column strip and middle strip respectively are as follows. For the angel area floor(contianed edge beams), the ratio of midspan section is 0.537:0.463, the ratio of support section is 0.816:0.184; for the edge area floor(contianed edge beams), the ratio of midspan section is 0.51:0.49, the ratio of support section is 0.808：0.192; for the inner area floor, the ratio of midspan section is 0.55:0.45, the ratio of support section is 0.75:0.25.

• Periodical: Applied Mechanics and Materials (Volumes 351-352)
• Pages: 560-565
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.351-352.560
• Online since: August 2013
• Authors: Kao Zhong Zhao, Guang Yi Wang
• Keywords: Assembly Box Concrete Hollow Floor, Column-Supported, Experimental Study, Mechanical Performance, Moment Distribution Ratio

References

[1] Ding Jianmin, Zhang Yun. Builder, 2008(1): 26―28. (in Chinese).

[2] Fang Hai, Wang Mingyan, Xu Zhengqing. Construction Technology, 2008, 37(7): 75―77. (in Chinese).

[3] Kaozhong Zhao, Zi-ran Li, Li Wang, Shuangjun Sun, Xiaopeng Fang, Chao Wang. Engineering Mechanics, 2011(Vol. 28 Sup. I ): 145―150. (in Chinese).

[4] JGJ/T207-2010, Technical specification for assembly box concrete hollow floor structure. Beijing: China Building Industry Press, 2010 (in Chinese).

[5] CECS175: 2004, Technical specification for cast-in-situ concrete hollow floor structure. Beijing: China Building Industry Press, 2004(in Chinese).

[6] Structure articles of The national civil building engineering design technical measures, edited by China Building Standard Design & Research Institute, 2003. (in Chinese).

[7] Xiguang Gao, Yuxing Zhao. Journal of Shandong Jiaotong University , 2005, 13(4): 48―51. (in Chinese).