EXPERIMENTAL STUDY OF COMPOSITE PRESTRESSED CONCRETE SLABS WITH CONCRETE-FILLED TUBULAR STEEL TRUSSES CONNECTED BY CLOSE JOINTS

YU Jinghai; HE Mengjie; ZHAO Yuyang; ZHANG Bo; TANG Yuxuan

doi:10.13204/j.gyjz202006010

Volume 50 Issue 6

Aug. 2020

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YU Jinghai, HE Mengjie, ZHAO Yuyang, ZHANG Bo, TANG Yuxuan. EXPERIMENTAL STUDY OF COMPOSITE PRESTRESSED CONCRETE SLABS WITH CONCRETE-FILLED TUBULAR STEEL TRUSSES CONNECTED BY CLOSE JOINTS[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(6): 58-66. doi: 10.13204/j.gyjz202006010

Citation:

YU Jinghai, HE Mengjie, ZHAO Yuyang, ZHANG Bo, TANG Yuxuan. EXPERIMENTAL STUDY OF COMPOSITE PRESTRESSED CONCRETE SLABS WITH CONCRETE-FILLED TUBULAR STEEL TRUSSES CONNECTED BY CLOSE JOINTS[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(6): 58-66. doi: 10.13204/j.gyjz202006010

Citation:

YU Jinghai, HE Mengjie, ZHAO Yuyang, ZHANG Bo, TANG Yuxuan. EXPERIMENTAL STUDY OF COMPOSITE PRESTRESSED CONCRETE SLABS WITH CONCRETE-FILLED TUBULAR STEEL TRUSSES CONNECTED BY CLOSE JOINTS[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(6): 58-66. doi: 10.13204/j.gyjz202006010

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EXPERIMENTAL STUDY OF COMPOSITE PRESTRESSED CONCRETE SLABS WITH CONCRETE-FILLED TUBULAR STEEL TRUSSES CONNECTED BY CLOSE JOINTS

doi: 10.13204/j.gyjz202006010

1. School of Civil Engineering, Tianjin University, Tianjin 300072, China;
2. Tianjin University Research Institute of Architectural Design, Tianjin 300073, China;
3. Tianjin Jinzheng Real Estate Development Co., Ltd., Tianjin 300073, China;
4. Shandong One Star Construction Technology Co., Ltd., Jinan 250014, China

Received Date: 2019-12-27
Publish Date: 2020-08-20

Abstract

Abstract

Through the static loading test of 8 prestressed-concrete composite slabs with concrete-filled tubular steel trusses connected by close joints, the flexural behavior of the composite slabs in vertical direction of being prestressed was studied under uniformly distributed load, and the plane section assumption was verified. The results showed that the work performance of prestressed concrete composite slab with concrete-filled tubular steel trusses was good. The cracks of double-piece composite plate only appearred at the joint in the middle of the span, while the cracks of triple-piece or quadruple-piece composite plate appear closed. The anti-crack bars of joints had little effect on the improvement of cracking load, but they could share the stress of transverse stress reinforcement, significantly made the crack distribution evenly. The ultimate lood increased with the increase of the lamination thickness. The composite slab far away from the joint was in line with the assumption of plane section. Based on parametric analysis, the main influencing factors of bending stiffness in the vertical prestressing direction of the composite slab were analyzed as follows:the ratio of thickness of the prefabricated plate to that of the composite slab h/H and the width of the prefabricated plate b. Through nonlinear surface fitting, a formula for calculating the influence coefficient of vertical prestress direction stiffness was presented.
- tubular steel truss,
- close joint,
- composite slab,
- variable parameter analysis,
- bending stiffness

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References(13)

References

沈春祥.预应力混凝土双向叠合板试验研究[D]. 天津:天津大学,2005.

安海玉,贾莉,丁永君.预应力混凝土双向叠合板力学性能试验研究及应用[J].建筑结构,2012(12):90-93.

徐天爽,徐有邻.双向叠合板拼缝传力性能的试验研究[J]. 建筑科学,2003,19(6):11-14.

叶献国,华和贵,徐天爽,等.叠合板拼接构造的试验研究[J].工业建筑,2010,40(1):59-63.

丁克伟,陈东,刘运林,等.一种新型拼缝结构的叠合板受力机理及试验研究[J].土木工程学报,2015(10):64-69.

吴方伯,付伟,文俊,等.新型叠合板拼缝构造静载试验[J].建筑科学与工程学报,2018,35(4):1-10.

崔士起,刘传卿,刘文政,等.分离式接缝叠合板垂直接缝方向抗弯刚度的试验及计算方法研究[J]. 建筑结构学报,2018,39(9):75-84.

吴方伯,刘彪,李钧,等.新型叠合板拼缝构造措施的试验研究及有限元分析[J].工业建筑,2015,45(2):50-56.

吴方伯,黄海林,陈伟,等.预制带肋底板混凝土双向叠合板极限承载力[J].土木建筑与环境工程,2011,33(5):34-40.

ZHANG J S,WANG Y Z,YAO Y,et al. Influence of Reinforcement on In-Plane Mechanical Behaviors of CSPRP Under Cyclic Reversed Load[J]. Materials and Structures,2014,14(12):200-217.

郑伦存.PK预应力混凝土叠合板的试验研究与应用[D].长沙:湖南大学,2005.

周绪红,张微伟,吴方伯,等.预应力混凝土四边简支双向叠合板的设计方法[J]. 建筑科学与工程学报,2006,23(4):54-57.

中华人民共和国住房和城乡建设部.混凝土结构试验方法标准:GB/T 50152-2012[S].北京:中国建筑工业出版社,2012.

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