深水码头拱形纵梁结构研究 毕业论文外文文献翻译.docVIP

学号： 上海海事大学 本科生毕业设计（论文） 专 业：港口航道与海岸工程 班 级： 姓 名： Study on Structure of Arched Longitudinal Beams of Deep-Water Wharf ZHAI Qiu , LU Zi-ai and ZHANG Shu-hua ABSTRACT High-pile and beam-slab quays have been widely used after several years development. They are mature enough to be one of the most important structural types of wharves in China coastal areas. In order to accommodate large tonnage vessels, wharves should be constructed in deep water gradually .However , conventional high-pile and beam-slab structures are hard to meet the requirements of large deep-water wharf .According to arch s stress characteristics, a new type of wharf with catenary arched longitudinal beams is presented in this paper .The new wharf structure can make full use of arch s overhead crossing and reinforced concrete compression resistance , improve the interval between transverse bents greatly, and decrease underwater construction quantity .Thus, the construction cost cab be reduced. Take the third phase project of the Yangshan Deep-water Port for example , comparative analysis on catenary arched longitudinal beams and conventional longitudinal beams has been made .The result shows that with the same wharf length and width, the same loads and same longitudinal beam moment , catenary arch structure can improve the interval between bents up to 28 m , decrease the number of piles and underwater construction quantity . Key words: wharf ; structural type ; catenary arch ; internal force ; cost 1. Introduction In recent years , a trend of large tonnage vessels is increasing in port engineering .The international routes are now sailing the fifth and sixth generation container ships and over 300 , 000 tons for bulk vessels and oil tankers(Leifer and Wilson , 2007).In China , at present , the number of berths which can handle vessels over 50 , 000 tons is about 260 , but in fact , most of them can not meet the requirements of large-tonnage vessels , and constr