【作者】 张燕斌；

【导师】 姬宝霖；

【作者基本信息】 内蒙古农业大学 ， 农业生物环境与能源工程， 2009， 硕士

【摘要】 大中型门式刚架奶牛舍结构是目前国内外应用广泛的农业建筑结构形式之一,与传统的牛舍结构相比,其具有重量轻、空间大、环境优、工期短、造价低等特点。但是不合理的牛舍建筑参数及门式刚架梁柱变截面尺寸均会导致用钢量的增加,造成不必要的浪费。因此,门式刚架奶牛舍结构的优化设计日显重要。本文针对目前国内外流行的大中跨度门式刚架奶牛舍结构,从为奶牛创造最佳生存环境出发,以变截面轻型门式刚架结构为研究对象,运用有限元理论和方法,借助于大型有限元分析软件ANSYS中的APDL语言,结合门式刚架设计理论及规范,充分考虑奶牛生产工艺和材料的规格系列,通过呼和浩特某大型奶牛养殖场大跨度牛舍实例对门式刚架奶牛舍进行了建筑结构参数—跨度、柱距、柱高、坡度及变截面尺寸的优化设计。通过自编APDL语言结构优化程序,得出了大中跨度门式刚架结构优化次数与结构体积、截面尺寸的关系,并对结果进行校核,优化效果理想。与原设计方案相比,其体积、应力指标均得到了改善。本文的研究方法和结论具有工程实用意义,可以为类似农牧业建筑工程设计提供参考。更多还原

【Abstract】 Large and medium-sized homes portal frame structure of cowshed is one of the widely applicable agricultural buildings at home and abroad, and compared to the structure of the traditional cowshed, it possesses the characteristics of light weight, space, environmental advantages, short construction period, low cost and so on. However, unreasonable building parameters of cowshed and portal frame beams with variable cross-section size will lead to an increase of steel consumption, resulting in unnecessary waste. Therefore, the optimization for portal frame structure of cowshed is increasingly important.Aiming at the popular large and medium-sized span portal frame structure of dairy cow at home and abroad, from the view of creating the best living environment for cows, taking variable cross-section light portal frame structure as the research object, using the theory and methods of finite element, by means of APDL language in the large-scale finite element analysis software ANSYS, by combining with the theory and standard of portal frame design, considering fully cow production processes and material specifications series, by the example of large-span barn door frame home of a large dairy cow farm in Hohhot, in this paper, building structure parameters- the optimal span, cross-number, column spacing, column height and variable cross-section size were optimized. Self-made APDL language optimization program was completed. The relationship between the optimization number of the large and medium-sized portal frame structural and the structural volume and section size was obtained, and the results were checked, and the optimization effect was satisfactory. Compared with the original design, its size and stress indexes were improved.The research methods and conclusions have practical meaning for engineering, which provides reference for the similar design of agriculture and husbandry construction engineering.更多还原