Challenges Of ACI 318-19 Revisions To Flexural Design Of RC Beams Considering Higher-strength Reinforcements
學年 110
學期 2
出版（發表）日期 2022-04-15
作品名稱 Challenges Of ACI 318-19 Revisions To Flexural Design Of RC Beams Considering Higher-strength Reinforcements
作品名稱（其他語言）
著者 J. D. Yau; Y. C. Lee; X. Y. Chen
單位
出版者
著錄名稱、卷期、頁數 Journal of Applied Science and Engineering 26(1), p.131-140
摘要 For flexural design, the 2019 Building Code of the American Concrete Institute (ACI 318-19) revisions allows the use of high-strength reinforcements and concretes as well as new reinforcement strain limits for reinforced concrete (RC) structures. As a result, more economic flexural design of RC members with lower amount of longitudinal steel reinforcements or smaller sections will be appreciated. However, such benefits may probably introduce another issue of deflection analysis and depth (thickness)-span limitations in the coded serviceability requirements. From the viewpoint of mathematical programming, this topic is of constrained optimization problems with multiple decision variables and object functions. To address this issue, an Excel-spreadsheet modeling to integrate the flexural reinforcement design with the coded serviceability requirements of RC beams was developed, in which the Generalized Reduced Gradient (GRG) based nonlinear optimization method defaulted in the Excel-Solver is applied to search feasible (or optimal) longitudinal reinforcements for RC beam design. The results indicates that the serviceability requirements should be assessed in flexural design of slender RC beams if higher-strength reinforcement is taken into account.
關鍵字 ACI 318-19;beam;deflection;design;RC;serviceability;USD
語言 en
ISSN
期刊性質 國外
收錄於 ESCI
產學合作
通訊作者
審稿制度 是
國別 TWN
公開徵稿
出版型式 ,電子版
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