| Summary: | 碩士 === 國立臺灣科技大學 === 營建工程系 === 102 === This work tests ten full-size simple-supported beam specimens with the high-strength reinforcing steel bars (SD685 and SD785) using the four-point loading. The measured compressive strength of the concrete is in the range of 70–90 MPa. The main variable considered in the study is shear span-to effective depth ratio. Base on the experimental date that include maximum shear crack width, residual shear crack width, angle of the main crack and shear drift ratio, a simplified equation are proposed to predict the shear deformation of the HSRC beam member. Besides of the post-earthquake damage assessment, these results can also be used to build the performance-based design for HSRC structures. And using the allowable shear stress at the peak maximum shear crack width of 0.3 mm and 1.0 mm to suggest the design formulas that can ensure serviceability (long-term loading) and reparability (short-term loading) for shear-critical high-strength reinforced concrete (HSRC) beam members.
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