某非对称高层连廊结构动力特性及参数影响分析

增设连廊后,高层结构受力变得复杂,整体结构自振特性也随之发生变化。因此,本文以某非对称高层连廊结构为研究对象,利用通用有限元软件SAP2000建立三维空间有限元模型,分析整体结构振动特性。同时,分析了连廊连接方式、设计位置、连廊数量及两侧塔楼的非对称性程度等因素对整体结构的影响。结果表明,连廊采用刚接或铰接对结构自振特性几乎没有影响;设计中可考虑设置多个连廊,并将连廊设置于较高楼层位置;结构非对称性程度越大,结构扭转效应越明显,工程中应尽量避免。

The Dynamic Characteristics and Influence Parameter Analysis of an Asymmetric High-rise Connected Structure

The high-rise structure becomes complicated after adding corridors, and the self-vibration characteristic of the whole structure also changes.Therefore, this paper took a non-symmetrical high-rise connected structure as the research object, and used the general finite element software SAP2000 to establish the three-dimensional finite element model, which is used to analyze the vibration characteristics of structure.At then, the paper analyzed the influence of the corridor connection method, the design position, the number of corridors and the degree of asymmetry of the towers on the overall structure.The results show that either the rigid connection or hinged connection had little effect on the structural self-vibration characteristics.Setting up multiple corridors and setting the corridor to a higher floor position could be considered.And the more of the structural asymmetry degree is, the structural torsion effect is more obvious.It should be avoided as far as possible in the project.