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某办公大楼为８层全现浇框架结构 ,主体结构于１９９６年元月封顶 ,由于种种原因没有进入屋面工程及装饰施工。１９９６年７月发现屋面裂缝 ,雨水沿裂缝渗入 ,证明裂缝已贯通屋面板。裂缝情况如图１所示。现浇屋盖暴露于室外 ,受大气温差影响较大 ,容易产生温差裂缝 ,加上混凝?
An office building for the entire 8-story cast-in-frame structure, the main structure in January 1996 capped, due to various reasons did not enter the roofing and decorative construction. July 1996 found roof cracks, rain infiltration along the cracks, that cracks have been through the roof panels. Crack situation shown in Figure 1. Cast-in-place roof exposed to the outside, greatly affected by the temperature difference between the atmosphere, prone to temperature cracks, coupled with coagulation?