Experimental Study and Numerical Study on Shear Bearing Capacity of Shear Key Joints of Reinforced Concrete Open-Web Sandwich Plates

The shear key in the reinforced concrete open-web sandwich plate (RCOSP) is a block joint that connects with the top chord and the bottom chord. In order to understand the failure mode of the shear key and verify the accuracy of the current algorithm, a total of 9 test pieces are prepared and classi...

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Autores principales:	Hongna Lu, Huagang Zhang, Kejian Ma, Qin Wu, Lan Jiang
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/7475aa68f8894b6eba110f202d8c4e3a
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spelling	oai:doaj.org-article:7475aa68f8894b6eba110f202d8c4e3a2021-11-22T01:11:15ZExperimental Study and Numerical Study on Shear Bearing Capacity of Shear Key Joints of Reinforced Concrete Open-Web Sandwich Plates1687-844210.1155/2021/6197472https://doaj.org/article/7475aa68f8894b6eba110f202d8c4e3a2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/6197472https://doaj.org/toc/1687-8442The shear key in the reinforced concrete open-web sandwich plate (RCOSP) is a block joint that connects with the top chord and the bottom chord. In order to understand the failure mode of the shear key and verify the accuracy of the current algorithm, a total of 9 test pieces are prepared and classified 3 groups were assigned longitudinal reinforcement (LR) ratios of 0.49%, 0.82%, and 1.24%, respectively. The horizontal concentrated static loading under simple support condition is carried out. The test results show that the shear key is horizontally cut and the concrete is pulled apart or crushed along the direction of chord width at the shear key-chords area; the strain level of the concrete and stirrup of the shear key is lower averagely; the development of the horizontal displacement and the strain of the longitudinal bars of the test pieces goes through elastic, elastoplastic, and plastic stages; the ultimate load of the test pieces has almost no relationship with the reinforcement ratio of shear key but is controlled by the degree of crack development in the area where shear key connects with the chords. To avoid the current algorithm overestimating the shear capacity of shear key, the restricted condition of shear section is proposed. The finite element analysis (FEA) further verifies that the restricted condition of shear section proposed in this paper is reasonable and necessary.Hongna LuHuagang ZhangKejian MaQin WuLan JiangHindawi LimitedarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ENAdvances in Materials Science and Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Hongna Lu Huagang Zhang Kejian Ma Qin Wu Lan Jiang Experimental Study and Numerical Study on Shear Bearing Capacity of Shear Key Joints of Reinforced Concrete Open-Web Sandwich Plates
description	The shear key in the reinforced concrete open-web sandwich plate (RCOSP) is a block joint that connects with the top chord and the bottom chord. In order to understand the failure mode of the shear key and verify the accuracy of the current algorithm, a total of 9 test pieces are prepared and classified 3 groups were assigned longitudinal reinforcement (LR) ratios of 0.49%, 0.82%, and 1.24%, respectively. The horizontal concentrated static loading under simple support condition is carried out. The test results show that the shear key is horizontally cut and the concrete is pulled apart or crushed along the direction of chord width at the shear key-chords area; the strain level of the concrete and stirrup of the shear key is lower averagely; the development of the horizontal displacement and the strain of the longitudinal bars of the test pieces goes through elastic, elastoplastic, and plastic stages; the ultimate load of the test pieces has almost no relationship with the reinforcement ratio of shear key but is controlled by the degree of crack development in the area where shear key connects with the chords. To avoid the current algorithm overestimating the shear capacity of shear key, the restricted condition of shear section is proposed. The finite element analysis (FEA) further verifies that the restricted condition of shear section proposed in this paper is reasonable and necessary.
format	article
author	Hongna Lu Huagang Zhang Kejian Ma Qin Wu Lan Jiang
author_facet	Hongna Lu Huagang Zhang Kejian Ma Qin Wu Lan Jiang
author_sort	Hongna Lu
title	Experimental Study and Numerical Study on Shear Bearing Capacity of Shear Key Joints of Reinforced Concrete Open-Web Sandwich Plates
title_short	Experimental Study and Numerical Study on Shear Bearing Capacity of Shear Key Joints of Reinforced Concrete Open-Web Sandwich Plates
title_full	Experimental Study and Numerical Study on Shear Bearing Capacity of Shear Key Joints of Reinforced Concrete Open-Web Sandwich Plates
title_fullStr	Experimental Study and Numerical Study on Shear Bearing Capacity of Shear Key Joints of Reinforced Concrete Open-Web Sandwich Plates
title_full_unstemmed	Experimental Study and Numerical Study on Shear Bearing Capacity of Shear Key Joints of Reinforced Concrete Open-Web Sandwich Plates
title_sort	experimental study and numerical study on shear bearing capacity of shear key joints of reinforced concrete open-web sandwich plates
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/7475aa68f8894b6eba110f202d8c4e3a
work_keys_str_mv	AT hongnalu experimentalstudyandnumericalstudyonshearbearingcapacityofshearkeyjointsofreinforcedconcreteopenwebsandwichplates AT huagangzhang experimentalstudyandnumericalstudyonshearbearingcapacityofshearkeyjointsofreinforcedconcreteopenwebsandwichplates AT kejianma experimentalstudyandnumericalstudyonshearbearingcapacityofshearkeyjointsofreinforcedconcreteopenwebsandwichplates AT qinwu experimentalstudyandnumericalstudyonshearbearingcapacityofshearkeyjointsofreinforcedconcreteopenwebsandwichplates AT lanjiang experimentalstudyandnumericalstudyonshearbearingcapacityofshearkeyjointsofreinforcedconcreteopenwebsandwichplates
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Experimental Study and Numerical Study on Shear Bearing Capacity of Shear Key Joints of Reinforced Concrete Open-Web Sandwich Plates

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