Development of Design Guidance for Circular Reinforced Concrete Columns Incorporating Crack Width

G. C. S. Jayaweera, H. D. Hidallana-Gamage, W. P. R. Indrajith
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Abstract

Maximum crack width of reinforced concrete (RC) structures should be controlled for satisfying the serviceability and durability requirements of the structures. However, the crack width analysis of RC structures is not much easy because of the complexity of the parameters which affect the crack width. In the Sri Lankan context, there is no specific simplified guidance in terms charts and tables for crack width calculations of circular RC columns. Hence, it is important to develop such guidance. This research deals with the crack width analysis of circular RC columns in straight viaduct sections. A comprehensive study was carried out regarding the behaviour of the cracks in circular RC columns in viaduct sections as per the design standard, BS 5400. Autodesk Structural Bridge Design software was used to perform crack width calculations and MIDAS Civil software was used to do the Finite Element Analysis (FEA) and validation process. The comprehensive design charts developed in this research will be useful in calculating the crack widths in circular RC columns without following any time-consuming methods. Therefore, the findings of this research will be helpful to enhance the efficiency of the design work related to the crack width calculations of circular RC columns.
考虑裂缝宽度的钢筋混凝土圆形柱设计指南的编制
控制钢筋混凝土结构的最大裂缝宽度,以满足结构的使用寿命和耐久性要求。然而,由于影响裂缝宽度的参数比较复杂,钢筋混凝土结构的裂缝宽度分析并不容易。在斯里兰卡的情况下,对于圆形钢筋混凝土柱的裂缝宽度计算,没有具体的简化的术语、图表和表格的指导。因此,制定这样的指导是很重要的。本文研究了高架桥直断面中圆形钢筋混凝土柱的裂缝宽度分析。根据设计标准BS 5400,对高架桥截面圆形RC柱的裂缝行为进行了全面的研究。使用Autodesk结构桥梁设计软件进行裂缝宽度计算,使用MIDAS Civil软件进行有限元分析(FEA)和验证过程。本文所建立的综合设计简图将有助于计算圆形钢筋混凝土柱的裂缝宽度,而无需采用任何耗时的方法。因此,本文的研究结果将有助于提高圆形钢筋混凝土柱裂缝宽度计算相关设计工作的效率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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