Feasibility Study on Glass Covered Spaces in Cold Region

在城市规划领域，采用问卷调查法，对城市政府或建筑师单位的设计与规划实际情况进行了调查。80%的建筑师公司已经规划了中庭空间。然而，在北海道实现规划的案例很少，在建筑规划领域，旭川市对标志性场所--中庭的原型进行了调查。如果我们用它们的概念来重塑城镇，市场场所就变成了冬季城市中的购物中心。在建筑环境领域，用人员出行的方法考察了札幌市玻璃覆盖空间的实际利用情况。在下雪天，室外温度相对较高时，利用频率较高。并利用示踪气体技术对中庭模型的热对流通风率进行了测量，得出了大模型和小模型的相似规律。通过小模型的计算结果可以得到全尺寸中庭的总通风量。在寒冷地区的工程场地，在实验室测量了冰雪在屋面玻璃表面上的摩擦系数。然后，利用本研究的结果对北海道玻璃覆盖空间的可行性进行了探讨。

In fields of urban planning, the actual circumstances of design and planning in city governments or architects incorporated were examined by using a questionnaire method. 80% of the architects inc. had already planned Atrium Spaces. However, the realization of planning is very few case in Hokkaido.In fields of architectural planning, the marker places, i.e. a prototype of Atrium, were surveyed in Asahikawa City. If we use the concepts of them to reshape towns, the market places become the renewal as a shopping mall in winter cities.In fields of architectural environment, the actual utilization of a glass covered space was examined in Sapporo City by using a person trip method. The frequency of utilization is higher when the outdoor temperature relatively becomes high in the case of snowy day. And the ventilation rates by thermal convection were measured in atrium models by using tracer gas techniques.The law of similarity was formed between the large model and the small model. You can obtain the total ventilation rates of full size atrium from the results of the small model.In fields of cold region engineering, the friction coefficients of snow or ice on glass surfaces of the roof were measured in the laboratory. Then, the feasibility of the glass covered space in Hokkaido was discussed by using the results in this study.