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題 名 | 包覆型SRC柱鋼骨對混凝土圍束箍筋量之影響=Influence of Steel Shape on Concrete Confinement and Hoop Reinforcement Used in SRC Columns |
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作 者 | 翁正強; 顏聖益; 林俊昌; | 書刊名 | 中國土木水利工程學刊 |
卷 期 | 10:2 1998.06[民87.06] |
頁 次 | 頁193-204 |
分類號 | 441.55 |
關鍵詞 | SRC柱; 鋼骨翼板; 混凝土圍束效應; 圍束箍筋; SRC column; Steel flange; Concrete confinement; Hoop reinforcement; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究主要係針對包覆型鋼骨鋼筋混凝土柱中之混凝土受鋼骨圍束之行為進行理 論模式之研究。本研究提出數種SRC柱中鋼骨對混凝土的圍束模式,其中包括對於包覆H型 SRC柱之「小三角形」與「大三角形」圍束模式以及包覆十字型(或稱雙H型)SRC柱之「三 角形」、「八角形」及「矩形」圍束模式,並經由分析推導求得SRC柱之圍束箍筋量計算公式。 對包覆H型及包覆十字型SRC柱而言,由於鋼骨翼板寬度的大小將對混凝土的圍束範圍有直 接的影響,因此本研究乃特別針對「鋼骨翼板寬度」變化與混凝土圍束效應的關係進行探討。 研究結果顯示,相對於ACI(318-95)規範中對一般RC柱圍束箍筋之規定而言,當考慮鋼骨 翼板對SRC柱內之混凝土的圍束貢獻時,SRC柱所需之圍束箍筋量將可獲得合理的放寬,並 有助於SRC柱的施工性。最後,本文並以實際SRC斷面針對本研究建議法所求得之SRC柱圍 束箍筋量與ACI(318-95)規範及NEHRP(1994)設計規定之耐震設計結果進行比較,以探討本 研究建議法之合理性。 |
英文摘要 | This study is devoted to investigation of the influence of steel shape on the concrete confinement used in steel reinforcement concrete (SRC) columns. A series of models for the concrete confinement based on the shape of steel sections are presented, including the "small triangle" and "large triangle" models for SRC columns with H shaped steel section, and the "triangle" and "rectangle" models for SRC columns with cross-H shaped steel section. These models are used to derive a series of equations for hoop reinforcement design of SRC columns. The derived equations emphasize the influence of the variation of the steel section, particularly the flange width, on the effect of concrete confinement. Comparisons of the design results of hoop reinforcement are made among the ACI code (318-95), NEHRP seismic provisions (1994) and the proposed equations. The results show that the amount of hoop reinforcement required by the current ACI code can be reasonably reduced when the contribution of steel shape on the concrete confinement is considered. |
本系統中英文摘要資訊取自各篇刊載內容。