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在我国寒冷地区的冬春季,当水反复冻融时,屋面檐口(雨篷)应具有保护其自身和檐下墙体结构的能力。但在调查中发现,有相当数量的檐口(雨篷)做得并不理想,非但保护不了檐下墙体,连檐口(雨篷)结构自身也遭到了严重破坏。1 檐口(雨篷)破坏实例及原因(1)混凝土檐口未采取有效的防止爬水措施,冰溜结在混凝土挑檐侧面和下面。经两三年反复冻融作用,檐口结构遭到严重破坏(图1)。
In winter and spring in cold areas of China, when the water is repeatedly frozen and thawed, the roof awning (rainbow) should have the ability to protect itself and the wall structure under the armpit. However, in the survey, it was found that a considerable amount of gargoyles (awnings) was not ideally done. Not only did it fail to protect the wall under the squat, but the structure of the sag (awning) itself was severely damaged. 1 Example of failure of gargle (canopy) and reasons (1) The concrete sluice has not taken effective measures to prevent climbing, and the ice slid on the sides and under the concrete provocation. After repeated freezing and thawing for two or three years, the cornice structure was severely damaged (Figure 1).