| 種別 | paper |
| 主題 | Simplified Nonlinear Analyses of Reinforced Concrete HoIIow Cylinders by Modelling into Shear Walls |
| 副題 | |
| 筆頭著者 | Taweep Chaisomphob（Thammasat University） |
| 連名者1 | Yukio Aoyagi（Asia Institute of Technology） |
| 連名者2 | Zou Yi（Asia Institute of Technology） |
| 連名者3 | |
| 連名者4 | |
| 連名者5 | |
| キーワード | |
| 巻 | 16 |
| 号 | 2 |
| 先頭ページ | 105 |
| 末尾ページ | 110 |
| 年度 | 1994 |
| 要旨 | 1. INTRODUCTION In the conventional analysis of reinforced concrete (RC) hollow cylinders applied to containments for nuclear power reactors, storage tanks for liquefied natural gas (LNG), etc., rather complicated analysis method involving nonlinear effects of three-dimensional reinforced concrete shell elements are required. Practical application of this analysis to real structures is severely constrained by a huge amount of computational time. Hence, more simlified analysis might be needed for an application to a practical design of such structures. From one of previous efforts to establish the simplified analysis of RC hollow cylinders, it was reported that under horizontal loading, a stiffness of the hollow cylinder can be divided into two zones: a radial stiffness zone and a tangential stiffness zone. Based on this idea, it is possible to model a 3-dimension problem of the honow cylinder into a 2-dimension problem of a shear wall. This paper presents a simplified nonlinear analysis of reinforced concrete hollow cylinders under a monotonic horizontal loading. The concept of the proposed simplified analysis is to model a honow cylinder into a shear wall consisting of a web wall resisting an in-plane shear force and flanges resisting a bending moment. In order to show a validity of the proposed shear wall model, the results of nonlinear analyses of the shear wall model by using a nonhear finite element program for a RC panel structures called 'WCOMR' are compared with the experimental results of a model of the hollow cylindrical structure. 5. CONCLUDING REMARKS This study is a preliminary attempt to simplify the complicated analysis of a reinforced concrete hollow cylinder subjected to a monotonic horizontal loading. The basic concept of this simplification is to use a shear wall model, i.e., to reduce a three-dimensional nonlinear problem to a two-dimensional one. By dividing a section of hollow cylinder into two zones : zone 1 for resisting the bending effect and zone 2 for resisting the in-plane shear effect, the model of H-section of the assumed shear wall consisting of flanges for zone 1 and a web wall for zone 2 is proposed. By using this assumed shear wall, nonlinear analyses are performed to simulate the behaviour of the tested hollow cylinder subjected to a horizontal force. From the parametric studies on the effects of dimensions of the shear wall, it was found that there was a possibility to apply the assumed shear wall for simulating nonlinear load-displacement behaviour of the hollow cylinder. However, in order to find the general rules to determine the dimensions of the assumed shear wall, more investigations are needed. |
| PDFファイル名 | 016-01-2016.pdf |