Wind Load And Wind-induced Vibration Response Analysis Of Long Span Skybridge

Along with the improved requirements for tall building structural types and usage functions, single building are designed to be connected to each other through different skybridges. One of the commonly used joining structure is the skybridge. Because the skybridge is usually long-spanned and high in the air ,the skybridge is similar to a bridge supported by the single building. When the skybridge rigidity is weak comparing with that of the buildings, the wind vibration analysis and wind resistant analysis become very important in the design of skybridge.The main body structure of Hangzhou citizen center is composed of arc-shaped towers which distribute around the center wreath,. The six towers are connected to each other through six steel spatial corridors at the 23rd and 25th story of each tower which is at an altitude of about 90 meters. Similar structures are so far rarely met in the domestic and foreign engineering practices. Based on Hangzhou citizens center rigid model wind tunnel test, The surface wind pressure and dynamic wind-induced response analysis are conducted in this paper for the corridor. Main research works as follows:1. This paper introduces the details of the wind tunnel of HangZhou citizen center, which is a tall building cluster with skybridge between individual buildings. The results of the skybridge obtained from the wind tunnel test, including the mean pressure coefficients and fluctuating pressure coefficients in different wind directions, are presented.2. To establish the dynamic behaviour of the skybridge under wind load, wind vibration response analysis of skybridge is then performed based on the wind tunnel test in time domain. The analysis account for the displacement and acceleration of skybridge. Finally, the behaviour of skybridge in across wind direction analysis is performed.Based on the model test, analyzed on theoretical, the thesis gives some credible data to analysis of the wind load and wind-induced response behavious of skybridge. In the finality, the problems requiring further studies are discussed.