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在本文内,我们研究了上海地区的风雪荷载,建议上海地区的标准雪载为18公斤/公尺~2,雪的超载系数为1.3;上海地区的标准风载为75公斤/公尺~2,风的超载系数为1.2。本文的内容主要分三部份:一、资料的分析,二、统计方法的讨论,三、风雪的标准荷载和超载系数。在第一部份内,分别说明风雪原始资料的整理过程,并对测站周围的环境、测量的方法和仪器作了介绍。在第二部份内,讨论了用矩法的统计方法和黄万里教授建议的统计方法的优缺点,并建议采用本文所用的统计方法。在第三部份内,根据标准荷载和超载系数的意义,建议了确定风雪标准荷载和超载系数的方法;根据这一方法,用本文建议采用的统计方法得到上海地区的风雪标准荷载和超载系数。此外还着重指出,得到的标准荷载和超载系数必须在制定按计算极限状态的设计规范时作进一步的修正。在本文的最后,还指出了一系列尚待进一步研究和讨论的问题。
In this paper, we study the snow load in Shanghai. It is suggested that the standard snow load in Shanghai should be 18 kg/meter~2, and the snow overload coefficient should be 1.3; the standard wind load in Shanghai should be 75 kg/meter~ 2, the wind’s overload coefficient is 1.2. The content of this paper is mainly divided into three parts: First, the analysis of data, Second, the discussion of statistical methods, Third, the standard load and overload coefficient of wind and snow. In the first part, the process of sorting the raw data of Snow and Snow was explained separately, and the environment around the station, methods and instruments for measurement were introduced. In the second part, we discussed the advantages and disadvantages of the statistical method using the moment method and the statistical method suggested by Professor Huang Wanli, and proposed the statistical method used in this paper. In the third part, based on the significance of standard load and overload coefficient, a method to determine the standard load and overload coefficient of wind and snow is proposed; according to this method, the standard snow and snow loads in Shanghai are obtained using the statistical methods proposed in this paper. Overload factor. In addition, it is emphasized that the standard load and overload factor obtained must be further revised when formulating design specifications based on calculated limit states. At the end of this paper, we also pointed out a series of issues that need further study and discussion.