Experimental Research on Bending Performance of Prestressed Glulam-Concrete Composite Beams

CHEN Xi; XU Qingfeng; ZHANG Fuwen; LENG Yubing; WANG Mingqian; CHEN Lingzhu

doi:10.3724/j.gyjzG24090204

Volume 54 Issue 10

Oct. 2024

Turn off MathJax

Article Contents

Article Navigation > INDUSTRIAL CONSTRUCTION > 2024 > 54(10): 70-76

CHEN Xi, XU Qingfeng, ZHANG Fuwen, LENG Yubing, WANG Mingqian, CHEN Lingzhu. Experimental Research on Bending Performance of Prestressed Glulam-Concrete Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(10): 70-76. doi: 10.3724/j.gyjzG24090204

Citation:

CHEN Xi, XU Qingfeng, ZHANG Fuwen, LENG Yubing, WANG Mingqian, CHEN Lingzhu. Experimental Research on Bending Performance of Prestressed Glulam-Concrete Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(10): 70-76. doi: 10.3724/j.gyjzG24090204

Citation:

CHEN Xi, XU Qingfeng, ZHANG Fuwen, LENG Yubing, WANG Mingqian, CHEN Lingzhu. Experimental Research on Bending Performance of Prestressed Glulam-Concrete Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(10): 70-76. doi: 10.3724/j.gyjzG24090204

PDF( 8538 KB)

Experimental Research on Bending Performance of Prestressed Glulam-Concrete Composite Beams

doi: 10.3724/j.gyjzG24090204

1. Shanghai Key Laboratory of Engineering Structure Safety, Shanghai Research Institute of Building Sciences Co., Ltd., Shanghai 200032, China;
2. Shanghai Jianke Prestressed Engineering Co., Ltd., Shanghai 200032, China

Received Date: 2024-09-02
Available Online: 2024-11-06

Abstract

Abstract

Four sets of 12 bending tests of prestressed glued laminated timber (glulam)-concrete composite beams with different shear connections were tested. The test parameter is the shear connection form, including notch connections, notch plus screw connections, and the combination of multi connections. The results of the bending test showed that the main failure mode of the composite beams was the bending failure of the timber. For beams with the same notch plus screw connection, applying prestress increased the average bending bearing capacity by 20.3%, the average collapse bending stiffness by 10.1%. At failure, obvious slip occurred at the shear connection. The beam with notch plus screw connection showed better integrity and flexural capacity when it failed compared to the other two sets of composite beams, which meant that the notch plus screw connection presented a better connection effect.
- prestress,
- glulam-concrete composite beams,
- shear connection,
- bending test

FullText(HTML)

References(14)

References

[1]	YEOH D, FRAGIACOMO M, DE FRANCESCHI M, et al. State of the art on timber-concrete composite structures: literature review[J]. Journal of Structural Engineering, 2011, 137(10): 1085-1095.
[2]	江雨辰, 胡夏闽. 木-混凝土组合梁研究综述[J]. 建筑结构学报, 2019, 40(10): 149-157 ,167.
[3]	胡朝斌, 杜浩, 孙志翔, 等. 有木隔板的木-混凝土组合梁斜交螺钉连接件抗剪承载力计算方法研究[J]. 工业建筑, 2020, 50(9): 89-93.
[4]	杜浩, 胡夏闽, 王汉成, 等. 胶合木-混凝土组合梁斜向螺钉连接件受剪性能研究[J]. 建筑结构学报, 2020, 41(7): 191-200.
[5]	CLOUSTON P, BATHON L A, SCHREYER A. Shear and bending performance of a novel wood-concrete composite system[J]. Journal of Structural Engineering, 2005, 131(9): 1404-1412.
[6]	PERSAUD R, SYMONS D. Design and testing of a composite timber and concrete floor system [J]. Structural Engineer, 2005, 84(4): 22-36.
[7]	袁帅, 贺国京, 李礼, 等. 木-混凝土组合梁桥受力性能试验研究[J]. 工业建筑, 2018, 48(5): 112-116.
[8]	胡夏闽, 李巧, 彭虹毅, 等. 木-混凝土组合梁静力试验研究[J]. 建筑结构学报, 2013, 34(增刊1): 371-376.
[9]	DEAM B, FRAGIACOMO M, GROSS S. Experimental behavior of prestressed LVL-concrete composite beams[J]. Journal of Structural Engineering, 2008, 134(5):801-809.
[10]	SHI B K, ZHU W X, YANG H F, et al. Experimental and theoretical investigation of prefabricated timber-concrete composite beams with and without prestress[J]. Engineering Structures, 2020, 204,109901.
[11]	郑玉槟, 刘问, 申士杰, 等. 预应力FRP增强胶合木的预应力损失研究[J]. 世界地震工程, 2019, 35 (3): 99-107.
[12]	CEN. Timber structures-joints made with mechanical fasteners-general principles for the determination of strength and deformation characteristics: EN 26891∶1991 [S]. Brussels: CEN, 1991.
[13]	陈溪. 预应力胶合木-混凝土组合梁的受力机理和长期性能研究[R]. 上海: 上海市建筑科学研究院有限公司, 2024.
[14]	中华人民共和国住房和城乡建设部. 木结构试验方法标准: GB/T 50329—2012 [S]. 北京: 中国建筑工业出版社, 2012.