- 摘 要
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(1 東南大學土木工程學院, 南京 210096; 2 中國十七冶集團有限公司, 馬鞍山 243000)
[摘要]為了研究鋼筋約束漿錨搭接連接的施工工藝和可靠性,設計制作了144個鋼筋約束漿錨搭接連接的鋼筋搭接試件。對其中72個試件進行了單向拉伸試驗,對其余72個試件進行了高應力反復拉壓試驗,試驗中綜合考慮了縱向鋼筋直徑、縱向鋼筋搭接長度、箍筋體積配筋率、混凝土強度等不同因素對其破壞機理和粘結強度的影響。試驗結果表明,鋼筋約束漿錨搭接連接施工方便、連接可靠,是當前預制裝配式剪力墻體系中較可靠的鋼筋連接形式之一。
[關鍵詞]鋼筋約束漿錨搭接連接; 單向拉伸; 高應力反復拉壓; 試驗研究
中圖分類號:TU375 文獻標識碼:A 文章編號:1002-848X(2015)02-0032-04
Experimental study on constraint groutfilled lap connection of steel bar
Ma Junwei1, Yin Wanyun2, Liu Shoucheng2, Liu Tifeng2, Pan Jinlong1
(1 School of Civil Engineering, Southeast University, Nanjing 210096, China;
2 China No. 17 Metallurgical Construction Co., Ltd., Ma′anshan 243000, China)
Abstract:In order to investigate the reliability and construction method of constraint groutfilled lap connection of steel bars, a total of 144 specimens were designed and tested. Half of them were tested under unidirectional tension and the other half were tested under repeated tension and compression under high stress in steel bars. The influences of experimental parameters on the failure mechanism and bond strength of groutfilled lap connection of steel bars were studied including bar diameter of longitudinal steel, bar lapping length of longitudinal steel, volume reinforcement ratio of stirrup and concrete strength. The experimental results indicate that the constraint groutfilled lap connection for steel bars is simple and reliable for construction, and is one of the best steel bar connection forms in precast concrete shear wall structure.
Keywords:constraint groutfilled lap connection of steel bar; unidirectional tension; repeated tension and compression under high stress; experimental study
作者簡介:馬軍衛(wèi),博士研究生,工程師,Email: sl_majunwei369@sina.com。
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