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一、问题的提出北京经济技术开发区农业银行营业网点,是一主楼为14层,裙房为3层的L型建筑(见附图①),采用钢筋混凝土框剪结构,很显然裙楼及主楼的总长72米和57.6米均超过规范中55米的要求,如何处理好大面积平台的温度应力问题,是该工程施工设计前结构方案确定的一个关键。本工程解决温度应力的问题,最彻底的方法就是设永久性伸缩缝,将其分成若干小块,但由于业主不允许,故只有采用不设缝的方案。二、方案的定性分析一幢钢筋混凝土建筑物,温度变化影响结构的因素很多,在同一情况下,各种位置的温度不尽相同,温度场的分布,收缩系数等参数均难以精确决定,而混凝土又是非均
First, the issue raised Beijing Economic and Technological Development Zone Agricultural Bank branch outlets, is a 14-story main building, podium for the three-story L-shaped building (see Figure ①), the use of reinforced concrete frame shear structure, it is clear that the podium and The main building’s total length of 72 meters and 57.6 meters are more than 55 meters in the specification requirements, how to deal with a large area of the platform temperature stress problem is the construction of the project before the construction program to determine a key. This project to solve the problem of temperature stress, the most thorough way is to set up a permanent expansion joints, divided into small pieces, but because the owners do not allow, it is only used without sewing program. Qualitative analysis of the program A lot of factors affect the structure of a reinforced concrete building. In the same situation, the temperatures of various locations are different. The parameters such as temperature distribution and shrinkage coefficient are difficult to be determined accurately. Concrete is non-homogeneous