Experimental Study on Properties of Side Joint between Superimposed Slabs with Lattice Steel Bars

Abstract:

Mechanical properties of joint between superimposed slabs have a remarkable effect on the bending performance of the whole slab. To study the bending performance of superimposed slabs with different forms of joint, six superimposed slabs were designed and produced. Based on the static loading experiment, load was concentrated on two three-equal-division points, bearing capacity, deformation, cracks of specimens were obtained. Whether there were lattice steel bars in the precast slab or not and different reinforcement in the joint were considered to study the bending performance. The test results show that the failure mode of slab without lattice steel bars is brittle while others are ductile. Lattice steel bars can control the development of cracks along the superposed surface, increasing the shear capacity and improving the ductility of specimens. The bearing capacity of the whole superimposed slab depends on the joint cross section. The joint would not generate a difference to the deflection curves in service condition. When reinforcement in the joint is strengthened, failure modes of slabs will be effectively improved.

• Periodical: Applied Mechanics and Materials (Volumes 638-640)
• Pages: 109-114
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.638-640.109
• Online since: September 2014
• Authors: Xian Guo Ye*, Kai Nan Yang, Xun Chong, Qing Jiang
• Keywords: Joint, Lattice Steel Bars, Static Loading Experiment, Superimposed Slab

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