UHPC 包覆補強既有柱：研究重點與評估方式

1UHPC 是什麼

超高性能混凝土（UHPC）具有很高的抗壓強度，並因纖維而有良好的抗拉與變形能力，近年在結構工程的應用與設計方法持續發展 [12]。

2用來補強既有柱

以一層 UHPC 包覆既有柱，可以提高圍束與剪力強度，改善韌性。全尺寸試驗研究了高軸力下的耐震表現 [13]，也比較了現場澆置與預鑄 UHPC 外殼對剪力不足柱的補強效果 [14]。

3設計階段怎麼評估

補強前後的彎矩-曲率曲線，可以直接看出極限曲率與曲率韌性的改變，作為選擇補強厚度與方案的依據。StructFlow 的 UHPC 包覆模型對應這方面的研究，可與未補強斷面並列比較。

參考文獻

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