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在现有地震力计算理论中,比较先进而又实用的是苏联新规范(ПСП-101-56)和美国侧力联合委员会所定新规范草案中所规定的方法。但是它们都有缺点。首先,根据这两种理论计算各种建筑物的地震力时,都使用同一个方法。但十分明显,不同类型的建筑物的动力性能是不相同的。因此,其结构计算简图和计算方法也应有所区别。本文将针对其不同特点分别对高层建筑、低层建筑和单层厂房提出了比较合理和实用的计算方法。其次,根据苏联和美国新规范的方法计算的结果,在地震作用下最大加速度沿结构高度的分布曲线将与结构的主要振型曲线成正比,因此在地基处加速度将等于零。这显然也是不合理的。本文详细论证了此一缺点产生的根源。 本文的基本内容曾分别于1957年5月举行的“哈尔滨工业大学土木工程科学讨论会”和1957年12月在中国科学院土木建筑研究所举行的“抗震结构科学报告会”中报告和讨论过。
In the existing theory of seismic force calculation, a more advanced and practical method is the method prescribed in the new specification of the Soviet Union’s new specification (PTSC-101-56) and the United States Side Force Joint Commission. But they all have shortcomings. First, the same method is used when calculating the seismic forces of various buildings based on these two theories. But it is clear that the dynamic performance of different types of buildings is not the same. Therefore, the structural calculation diagram and calculation method should also be different. This article will propose a relatively reasonable and practical calculation method for high-rise buildings, low-rise buildings and single-storey buildings according to their different characteristics. Secondly, according to the results of the calculations of the Soviet Union and the United States, the distribution curve of the maximum acceleration along the structure height under the action of the earthquake will be proportional to the main mode shape curve of the structure, so the acceleration at the foundation will be equal to zero. This is obviously unreasonable. This article details the root cause of this shortcoming. The basic content of this article was reported and discussed in the “Study on Civil Engineering Science of Harbin Institute of Technology” held in May 1957 and the “Seismic Structure Science Report” held in December 1957 at the Institute of Civil Engineering and Architecture of the Chinese Academy of Sciences.