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本文是确定铜结构中焊接联结和铆钉联结的匀质系数和计算强度。在少数几个铜结构制造厂制造了一批焊接联结和铆钉联结试件,经过试验求出其屈服强度和极限强度。利用数理统计的方法和转换的方法分析了这些试验求得的数据,初步获得了焊缝联结和铆钉联结的匀质系数和计算强度如下: 对齐焊缝的计算强度可以采用主体金属的计算强度R;贴角焊缝的可以采用0.7R。此时焊缝的匀质系数与主体金属的相同。主体金属3号铜(标准强度为24kg/mm2)的匀质系数为0.8或0.9时,R可分别取19kh/mm2或21kg/mm2,可分另取13.5kg/mm2或15kg/mm1。 铆钉铜的匀质系数求得力0.9,其抗拉计算强度。铆钉联结抗剪计算强度可以采用 0.9 , 即18kg/mm2;其水压计算强度可以采用2R,当主体金属3号铜的匀质系数为 0.8或 0.9寸, 可分别取 38 kg/mm2或 42kg/mm2。
This article is to determine the homogeneity coefficient and calculation strength of welding joints and rivet joints in copper structures. In a few copper fabrication plants, a number of welded and riveted specimens were manufactured and tested to determine their yield strength and ultimate strength. Using the method of mathematical statistics and conversion methods, the data obtained from these tests was analyzed, and the homogeneity coefficients and calculated strengths of the weld joints and rivet joints were initially obtained as follows: The calculated strength of the alignment welds can be calculated using the strength of the host metal R ; Angular welds can use 0.7R. At this time, the uniformity coefficient of the weld is the same as that of the main metal. When the coefficient of homogeneity of the main metal No.3 copper (standard strength is 24kg/mm2) is 0.8 or 0.9, R can be taken as 19kh/mm2 or 21kg/mm2, respectively, and 13.5kg/mm2 or 15kg can be taken separately /mm1. The coefficient of homogeneity of the rivet copper is found to be a force of 0.9 and its tensile strength is calculated. Rivet connection shear strength calculation can be used to 0.9, that is 18kg/mm2; its water pressure calculation strength can be used 2R, when the main metal No. 3 copper homogenization coefficient of 0.8 or 0.9 inches, can be taken 38 Kg/mm2 or 42kg/mm2.