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在建筑结构按照极限状态的计算方法中,必须确定标准荷载及其相应的超载系数。对于自重及房屋的活荷重等可以参考苏联规范定出这些数值,但是对于风压和雪载,则必须根据我国的气候特点来规定这些数值。本文的主要目的,即根据沈阳,哈尔滨、长春、大连,旅顺,营口,牡丹江等地区的积雪资料,天津,武汉,青岛、沈阳、济南,长春、大连、营口等地区的风速资料,分别作了各该地区的雪载和风压的数理统计分析。 对于大多数地区风压和雪载的分析,引用皮尔逊三型曲线的变型—克利茨基—一门凯星曲线及莫列尔建议的计算图;这种曲线考虑了分布的偏斜性,能更好地接近于经验分布曲线。 其些地区(长春、济南)的风压,由于算出的偏度为负值,以及由于经验分布接近于正态,因此引用了高斯正态分布曲线它与经验分布曲线的接近程度用柯尔莫郭洛夫院士所创立的拟合优度准则作了论证,计算出的P(λ)之值为 0.9617及 1.0000,它表明在这些情况下引用正态曲线是足够正确的。 根据本文所论述的结果,对建筑工程部1954年9月所颁布的“荷载规范试行草案”中关于上述地区的风压和雪载的规定,提供修订的意见,并建议了上述地区的标准荷载及相应的超载系数之值作为制定新规范的参考。
In the calculation of the building structure according to the limit state, the standard load and its corresponding overload factor must be determined. For self-respect and live load of houses, these values can be determined by reference to the Soviet Union norms, but for wind pressure and snow load, these values must be specified according to the climate characteristics of our country. The main purpose of this paper is to analyze the wind speed data of snow cover in Shenyang, Harbin, Changchun, Dalian, Lushun, Yingkou and Mudanjiang areas, wind speed data in Tianjin, Wuhan, Qingdao, Shenyang, Jinan, Changchun, Dalian and Yingkou Mathematical statistics analysis of snow load and wind pressure in each area. For the analysis of wind pressure and snow load in most areas, the variation of Pearson’s type-3 curve - the calculated curve of Klitschko-Kaymen curve and Moore’s proposal is cited; this curve takes into account the skewness of the distribution, Be closer to the experience distribution curve. The wind pressure in some areas (Changchun, Jinan) is negative because of the calculated skewness, and because the empirical distribution is close to normal, it quotes the Gaussian normal distribution curve which is close to the empirical distribution curve. The goodness-of-fit criterion established by Professor Gorlov argues that the P (λ) values are 0.9617 and 1.0000, which indicate that it is good enough to cite normal curves in these cases. According to the results discussed in this article, the Ministry of Construction and Engineering in September 1954 promulgated the “Draft Provisions” on wind pressure and snow load in the above-mentioned areas, provide amendments to the comments and suggested that the above-mentioned area standard load And the corresponding value of the overload coefficient as a reference for the development of new norms.