Confined Concrete Stress-Strain Model for New RC Square Column with Normal Strength of Lateral Reinforcement
|關鍵字:||柱;高強度鋼筋混凝土;軸壓試驗;圍束效應;Column;High-Strength Concrete;Axial Load;Confined Concrete|
Nowadays, high-rise buildings have gradually become a new trend in metropolitan areas. In light of the fact that column members placed below high-rise constructions bear relatively high vertical loads, the application of New RC with its high strength as well as the design without expanding cross-section of column members not only reduce material usage and costs but also increase interior space in a building. Currently, national studies related to New RC was conducted on the behavior of element levels, and little attention has been given to investigation into the relationship between stress and strain of material levels. In addition, several recognized studies in the field of civil engineering across the world are mostly focused on basic research on materials. As a result, based on regulati contextons from the U.S., Canada and New Zealand to name a few, this study utilized local materials and construction approaches with spacing of stirrup in the design and lateral reinforcement in the practice. This included spacing of stirrup, forms of hooks, flexural radius, and development length. By controlling spacing of stirrup and design of tie bar to alter the provided quantity of lateral reinforcement of column members, eight sets of column specimen were created and tested on their behaviors under concentric compression. This experiment aimed to compare the quantitative outcomes of the influence of confined effectiveness on column members, and subsequently to examine the toughness behavior of column members under circumstances of different lateral reinforcement. During the examination, the researcher also performed regression analysis on related control parameters referring to current predictive model of stress and strain. The purpose of this paper is to build a local predictive model of stress and strain for concrete core of column members for future analysis of structural design of New RC.
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