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我国严寒地区,冬季冻土深度少则几十厘米,多则几百厘米。位于建筑入口处的台阶、平台、坡道受冻胀和温差的综合影响,出现各种损坏。这些损坏已成为影响建筑入口使用功能的主要因素。建筑入口处常见的损坏主要有以下四种:①沿建筑物外墙与台阶、平台、坡道交接处出现通长有规则裂缝,裂缝的出现导致雨、雪水及生活用水侵
In the cold regions of China, the depth of frozen soil in winter is as small as several tens of centimeters, and as many as several hundred centimeters. Various damages occurred due to the combined effects of frost heaving and temperature difference on the steps, platforms and ramps at the entrance to the building. These damages have become a major factor affecting the use of building entrances. There are four main types of damage at the entrance to the building: 1 There are regular cracks along the junction between the exterior wall of the building and the steps, platforms, and ramps. The appearance of cracks causes rain, snow, and domestic water to invade.