| Summary: | 博士 === 國立臺灣科技大學 === 營建工程系 === 106 === An experimental study is carried out to evaluates the cyclic behaviors of RC squat wall specimens using conventional and high-strength materials. A total of 11 specimens were tested under lateral displacement reversals. Test parameters include specimen aspect ratio (hw⁄lw), existence of horizontally distributed web reinforcement, concrete strength, steel grade, shear demand and the wall cross section. Test results indicate specimens using high-strength steels exhibited comparable strength and deformation capacity as specimens using conventional Grade 60 steels with equivalent steel area force, i.e. total steel area times the steel yield stress. Specimen drift capacity decreases as the normalized shear demand increases. The use of high-strength concrete reduces normalized shear stress demand and results in larger specimen deformation capacity. Based on the available test results, specimen deformation capacity increases due to the use of barbell-shape special boundary element. A linear regression analysis suggests a maximum shear stress demand less than 7.0√(fc'(psi)) or 0.58√(fc'(MPa)) for RC squat walls to achieve a minimum drift capacity of 1.50%.
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