点击次数：

论文类型：期刊论文

发表时间：2017-02-01

发表刊物：APPLIED OCEAN RESEARCH

收录刊物：SCIE、EI、Scopus

卷号：63

页面范围：157-169

ISSN号：0141-1187

关键字：Bridge pylon foundation; Scale model design; EWCJSS; Hydrodynamic pressure; Collapse mechanism

摘要：Sea-crossing cable-stayed bridges located in areas of active seismicity are generally subjected to earthquakes, waves, current and other dynamic loads of potential threat during their service period. The pile group foundation, which is composed of bored piles and elevated pile caps, has been applied widely for pylons to ensure the stability of cable-stayed bridge towers. Owing to its large dimensions, complexity and marked three-dimensional characteristics, it is difficult to model the precise dynamic response of the pile group pylon foundation under the joint action of various dynamic loads by means of existing theory. In this paper, an experimental study is presented for a 11100 scale dynamic test model of a bridge tower with a grouped pile foundation. The model was designed according to elasticity-gravity similarity laws and tested using the Earthquake, Wave and Current Joint Simulation System. The structural response of the bridge tower in air and water conditions with and without incident sine waves and current was investigated. The test results may be used for engineering practice and further research. (C) 2017 Published by Elsevier Ltd.