标题：
Shear behavior and calculation model of C60 coral aggregate reinforced concrete beam
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所属单位：
航空学院
发表刊物：
Harbin Gongye Daxue Xuebao
摘要：
Seven coral aggregate reinforced concrete beams (CARCBs) with different types of reinforcement were designed in this study to investigate their shear behavior and calculation model. The shear behavior of CARCB was tested, and the deformation and shear capacity were investigated. The relationships of bending moment-midspan deflection, load-steel strain, and load-crack width were established. A calculation model for the ultimate bearing capacity (Vcs) of CARCB was proposed. Results show that normal section cracking load (Vcr) and Vcs of CARCB followed the rule: 316 stainless steel > common steel > zinc-chromium coated steel > organic new coated steel. The common steel had serious corrosion in the CARCB, which led to the degradation of stiffness. The CARCB crack width increased with the increase of load for different reinforcement types. In the initial loading stage, flexural cracks occurred at the midspan of the beam, which developed slowly. Inclined cracks were formed from the support to the concentrated force point with increasing loads, which widened rapidly, leading to beam failure. Therefore, with comprehensive consideration on the effects of reinforcement corrosion and high-strength concrete on the Vcs of CARCB, a calculation model for the Vcs of CARCB was proposed. © 2019, Editorial Board of Journal of Harbin Institute of Technology. All right reserved.
ISSN号：
0367-6234
是否译文：
否
发表时间：
2019-06-30
合写作者：
余红发,麻海燕,Wu, Zhangyu
通讯作者：
达波
发表时间：
2019-06-30
学位：工学博士学位
所在单位：民航学院/飞行学院