現今存在斜撐的結構物，大多數為鋼斜撐，而混凝土抗壓強度高與變形小，若將混凝土斜撐應用在結構物上，當使用合適的斜撐配置時，可減少整體結構側向位移，增加結構勁度，強化結構物能力。超高性能混凝土具有超高之軸壓與軸拉強度，並具有良好之裂縫控制能力，適合使用於耐震構材。本研究調查超高性能混凝土細長構件於反覆軸向荷載下之行為。共設計並測試四支構件，實驗參數包含混凝土類型與箍筋間距。測試時以兩端鉸接，進行軸向靜態反覆加載，探討超高性能混凝土細長構件之軸向行為。實驗結果顯示，使用超高性能混凝土取代高強度自充填混凝土於細長構件時，可有效提升構件之極限抗壓與拉力強度，並改善混凝土之脆性破壞行為。

Ultra-high performance concrete has ultra-high axial compression and axial tensile strength, and has good crack control capabilities, and is suitable for use in earthquake-resistant structures. This study investigates the behavior of ultra-high performance concrete slender members under cyclic axial loads. A total of four members were designed and tested, and the experimental parameters included concrete type and stirrup spacing. In the test, the two ends are hinged, and the axial static cyclic loading is carried out to explore the axial behavior of the ultra-high performance concrete slender member. Experimental results show that the use of ultra-high performance concrete instead of high-strength self-compacting concrete for slender components can effectively increase the ultimate compressive and tensile strength of the components, and improve the brittle failure behavior of concrete.

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