建筑結(jié)構(gòu)中鋼筋螺紋連接節(jié)點凍融傷害減緩新技術(shù)研究

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中圖分類號：TQ178 文獻(xiàn)標(biāo)志碼：A文章編號：1001-5922（2025）05-0163-04

Abstract：Inorder to improve the durabilityand safetyof steel thread connection structure inbuildings under freezethaw environment，a freeze-thaw damage mitigation method for steel thread connection joints of polyurethane rubber sleeve is proposed，and the mitigation effctand damagemechanismof steel thread jointsunderthis methodare explored.Theresultsshow that the tension loss of the joint in theearlystage of the freeze-thaw cycleiseffectively slowed down after the polyurethane rubber sleeve thread connection joint is used.The maximum number of cycles of cracks inthe concrete specimens formed at room temperature is 15O times，compared with6times without polyurethane rubber sleeve thread connection joint.The maximum number of cycles of cracks in concrete specimens formed atlow temperature is 43 times.Compared with4 times without polyurethane rubber sleeve threaded connection，the damage time of the specimens is greatlydelayed，which proves the efectiveness of the method in alleviating freezethaw damage.

Key words：assembly building；threaded connection；concrete preparation；freezing and thawing deterioration；damagemechanism

混凝土構(gòu)件連接技術(shù)是當(dāng)前裝配式建筑中預(yù)制混凝土框架連接的一項重要技術(shù)，其連接節(jié)點的質(zhì)量會直接影響整個建筑結(jié)構(gòu)的安全性與穩(wěn)定性[1]。（剩余6023字）