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劉國勇 （中科院建筑設計研究院有限公司，北京100190）
[摘要] 通過實例對鋼筋混凝土結構地下室墻體變形裂縫開裂原因進行綜合分析，找出其主要原因是混凝土拆模后的后期養(yǎng)護不當造成混凝土自身干縮和混凝土降溫收縮。根據(jù)分析，提出了嚴格控制混凝土的入模溫度、加強混凝土的初期和中期的表面養(yǎng)護和保溫隔熱處理、留置伸縮縫和后澆帶等防止收縮裂縫和溫度裂縫的防治措施。
[關鍵詞] 地下室；混凝土墻體；變形裂縫；原因分析；防治措施Analysis of reason and controlling method in deformation cracks in basement RC vall in luglrrise building
Liu Guoyong
( Institute of Architecture Design and Research ,Chinese Academy of Sciences, Beijing 100190, China )Abstract: According to an instance, the author comprehensively analyzed the cause of deformation cracks existing in the concrete wall, draw a conclusion that the main reason lies in that concrete wall were not well cured after being stripped, as inducing drying shrinkage and cooling shrinkage. Based on the analysis, advices and methods include severely contmlling the concrete temperature when pouring, well curing with retention of moisture and warm in the initial curing period and the middle curing period, setting up expansionjoint or post-cast strip,etc. were given, to prevent and deal with the shrinkage and temperature cracks in construction practice.
Keywords: basement; concrete wall; deformation crack; reasorranalysis; controlling metbod
