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Structural Behaviour of Composite RC Members Strengthened with UHPC Subjected to Static and Dynamic Loading
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| Title: | Structural Behaviour of Composite RC Members Strengthened with UHPC Subjected to Static and Dynamic Loading |
| Other Titles: | 静的および動的荷重を受ける超高性能コンクリートで補強された鉄筋コンクリート複合部材の構造挙動 |
| Authors: | YIN, HOR Browse this author |
| Issue Date: | 25-Sep-2018 |
| Publisher: | Hokkaido University |
| Abstract: | Ultra-high performance concrete (UHPC), a mix of reactive powder concrete with steel fibres, is an advancement in concrete technology. It can be defined by its excellent properties of UHPC including high strength, strain hardening, low permeability and energy absorption. Over the last two decades, UHPC is commonly used in protective structures, as non-penetrable coverings and in elements that must be durable against aggressive environments and severe loadings such as earthquakes, impacts or blasts. In addition, strengthening reinforced concrete (RC) members with UHPC can be an emerging technique for design, strengthening and protecting new or existing structures. Moreover, UHPC has shown high bond strength and good adherence to normal-strength concrete (NSC) substrates. Recently, UHPC has been used for strengthening parts of structures where the outstanding properties of UHPC could be fully exploited in full- scale site applications. Although UHPC has been considered as a potential tool in retrofitting or repairing existing RC structures, investigation on the behaviour of UHPC-concrete composite members is very limited. In addition, research on non-composite UHPC structural members subjected to dynamic loading is relatively scarce, and dynamic response of composite UHPC-concrete members has not yet been performed in the previous literature. This dissertation aims to further understand the structural behaviour of composite UHPC- concrete members under static and dynamic loading. In order to accomplish this aim, five specific objectives are carried out: (1) to investigate the structural behaviour of composite UHPC-concrete slabs under static loading through the experimental study; (2) to develop the finite element (FE) modelling for the flexural behaviour of UHPC members under static loading; (3) to predict the behaviour of UHPC-concrete slabs using FE modelling under static loading; (4) to figure out the numerical response of composite UHPC-concrete members subjected to dynamic loading; and (5) to evaluate the prediction method for the capacity of composite UHPC-concrete members. In this dissertation, for investigation of structural behaviour, experimental program was carried out. The experimental results were discussed. An FE modelling was developed and validated with the test results. For dynamic behaviour in this study, blast simulations were conducted to investigate the influence of UHPC strengthening layer on the blast resistance capacity of composite UHPC-concrete members. Calculation method of the structural capacity of composite UHPC-concrete members was proposed and verified with the experimental data. |
| Conffering University: | 北海道大学 |
| Degree Report Number: | 甲第13349号 |
| Degree Level: | 博士 |
| Degree Discipline: | 工学 |
| Examination Committee Members: | (主査) 准教授 白井 和貴, 教授 岡崎 太一郎, 教授 飯場 正紀, 教授 千歩 修 |
| Degree Affiliation: | 工学院（建築都市空間デザイン専攻） |
| Type: | theses (doctoral) |
| URI: | http://hdl.handle.net/2115/82741 |
| Appears in Collections: | 課程博士 (Doctorate by way of Advanced Course) > 工学院(Graduate School of Engineering)
学位論文 (Theses) > 博士 （工学）
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