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原文传递 Shear Strength Components in Reinforced Concrete Members

题名：	Shear Strength Components in Reinforced Concrete Members
其他题名：	AASHTO.(2009)."AASHTO-LRFD bridge design guide specifications for GFRP-reinforced concrete bridge decks and traffic railings."Washington,DC.
正文语种：	英文
作者：	Yu-Fei Wu
关键词：	Reinforced concrete;Shear strength;Test;Shear strength of concrete;Concrete and masonry structures
摘要：	The shear strength (V) of reinforced concrete (RC) beams consists of two parts: shear resistance of concrete (Vc) and contribution of the transverse reinforcement (Vs). Previous experimental results can only give the total shear strength V of a beam. Until now, no existing experimental means could measure the two aforementioned contributions separately with reasonable accuracy during the test of RC beams. This paper reports an experimental method that is able to quantify the two parts in conventional shear tests of RC beams. This was achieved by measuring the strains along the full length of each stirrup in the shear span without disturbing the bond. Thus, the variation in Vc and Vs can be recorded during a beam test. Preliminary tests using this method on particular beams show that not all the shear reinforcement intersecting a critical diagonal crack yields at the onset of shear strength. Both Vc and Vs are not at their maximum values when the shear strength is reached in a beam. The value of Vc is not constant under increasing deformation: it first increases and slightly drops after it reaches a peak, followed by a relatively stable plateau until final shear failure. The variation in Vc with respect to member deformation does not match the predictions of existing models.
出版年：	2017
论文唯一标识：	P-26Y2017V143N09016
英文栏目名称：	TECHNICAL PAPERS
doi：	10.1061/(ASCE)ST.1943-541X.0001832
期刊名称：	Journal of Structural Engineering
拼音刊名(出版物代码)：	P-26
卷：	143
期：	09
页码：	174-189