【作者】 陈枫；

【导师】 李正良；

【作者基本信息】 重庆大学 ， 结构工程， 2002， 硕士

【摘要】 近些年，巨型结构组合体系在高层结构设计中得到广泛的应用，对巨型结构体系的研究成为了工程界广泛关注的课题。由于巨型结构的受力与诸多因素有关，使问题研究比较复杂，目前的研究成果还不能完全满足实际工程的需要。风荷载是高层建筑的主要设计荷载，本文针对巨型结构的顺风响应问题进行了较广泛的讨论。首先根据概率统计理论，对作用于高层建筑的风力进行分析，提出了连续化的数学模型建立巨型柱、巨型梁的等效刚度方程式，采用了较适宜的广义脉动风速样本模拟基础上的风荷载模型。然后，用随机振动理论，按振型分解法将无限自由度体系分解为若干有限自由度体系，导出了顺风反应的位移和加速度关系式。最后，根据一些基本参数的设定，并且对结构的第一振型和质量简化模式提出了较切实际的假设，编制了计算机程序AWCTS。运用此程序对国内外三栋高楼进行了计算，并将已知的工程设计实例与程序模拟结果作了分析比较。例证表明，本文所建议选用的参数和风力所满足的基本关系式以及相应的位移和加速度反应，与实际有较好的吻合性。编制AWCTS时，使用了高斯积分，改进了程序的有效性。本程序适用于高层建筑的抗风计算和参数影响分析等方面的计算工作。更多还原

【Abstract】 Mega-structure, which is being extensively used, is an important structures system of high-rise buildings. The researches of mega- structure have been being paid close attention to by academic and engineering circles. Though a lot of achievements have been obtained, many problems remain unsolved for their complex nature.Wind load is a major kind of design load for high-rise buildings, this paper researches on the along-wind problems of mega- structure. The suitable model of wind load is developed by investigating into the wind load acted on mega- structure based on the probability, the mathematical model of an equivalent continuum column and beam is proposed. Then the deflections and accelerations of along-wind effects on mega- structure are derived from the method of disintegration of vibration modes, the infinite degree of freedom system may by resolved into a many number of degree freedom system, by the theory of random vibrations. The assumptions of some fundamental parameters and first model function and the model of mass are presented, and the computer program AWCTS is developed with the measure-mental and analogical results. It is shown that the parameters, computer methods, the responses of deflection and acceleration are fairly good accord with practical results. Gass integrations are used in the AWCTS programs in order to improve the computational efficiency. Furthermore, it is suited for the calculations of the structures resisted wind force and analysis of the structural responses as affected by parameters.更多还原