Cyclic Pushover Analysis of Cylinder RC Structure

• Main Authors: Sheng-Yun, Wei, 韋昇韻
• Other Authors: Yuan-Sen, Yang
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/x53cwe

碩士 === 國立臺北科技大學 === 土木工程系土木與防災碩士班 === 105 === Reinforced concrete (RC) walls are generally applied in currently RC structures. They not only contribute high shear capacity to the structures but also give confinement on neighboring beams and columns. In practical structural analysis, the mechanical behaviors of beams and columns are considered in numerical models, but the influence of walls are sometimes ignored. It is not easy to define the complicated behaviors and characteristics of reinforced concrete walls by simple mathematics and logics, especially when it gets into highly nonlinearity. That is why the influence of reinforced concrete wall is commonly reduced to simple numerical models in practices. However, simple numerical models do not represent complicated failure mechanisms of reinforced concrete walls. This research employed multi-layer shell element (MLSE) type and cyclic softened membrane model (CSMM) element type to simulate reinforced concrete walls, and discussed their differences by a series of numerical tests. The parameters for the MLSE were adjusted according to the CSMM numerical results. Since the CSMM was applicable only for 2D problems (up to December, 2016), it was not further employed for 3D tests in this work. Two reduced-scale reinforced concrete containment vessel tests, which were conducted in 2015 and 2016, respectively, were adopted to investigate the MLSE behaviors when it is used to model a tubular RC structure. The analysis results under different conditions were presented in this work. Finally the mechanical behavior of both analysis results are compared and discussed.