| Summary: | 碩士 === 國立臺北科技大學 === 土木與防災研究所 === 96 === The destruction form of the reinforced concrete beam can be divided into flexural failure and shear failure mainly. Shear failure without good early-warning mechanism among them, it may be so because of shear failure had greater uncertainty in observing and predicting of the two. Consequently, the designer will usually require that the shear strength of the reinforced concrete beam is higher than the flexural strength. In any event, it served as an important subject for predicting the shear strength of the reinforced concrete beam from ancient times to the present.
The experiment designs 3 kinds of different main reinforcement bars to arrange, 3 kinds of different strengths of concrete also match different shear reinforcement spacing. Discuss the influence of the shear strength of the reinforced concrete rectangle beam with shear reinforcement, and take into each other with ACI code to check against analysis by experimenting. On trial detection: (1) Stirrup occupies the shear strength contribution of the reinforced concrete rectangle beam will be more far with the stirrup spacing and more low, but the stirrup spacing about is d/2 and 3d/4 to compare then the difference isn''t very obvious. (2) Stirrup occupies the shear strength contribution of the reinforced concrete rectangle beam will be more big with the tension steel reinforcement ratio of doubly reinforced beam cross section and more low. (3) Stirrup occupies the shear strength contribution of the reinforced concrete rectangle beam will be more strong with the strength of concrete and more low. According to the on trial data, this research builds up an experience formula to simulate this on trial of result, and expect to can provide hereafter engineer design of reference.
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