文档库

最新最全的文档下载
当前位置:文档库 > 桥梁设计外文翻译---曼哈顿大桥的研究与分析

桥梁设计外文翻译---曼哈顿大桥的研究与分析

Proceedings of Bridge Engineering 2 Conference 2007

27 April 2007, University of Bath, Bath, UK

CRITICAL ANALYSIS OF THE MANHATTANBRIDGE

Julian Staden

Departement of Civil and Architectural Engineering, University of Bath

Abstract: This paper provides detailed information about the different aspects of the design of the ManhattanSuspension Bridge. Analytical reasoning is given to why each design feature was designed in the manor it was in order to fulfil th e engineers’ design crite ria. An attempt is also made to illustrate any shortcoming in the design of the structure and any ways in which the engineers could have potentially improved the design of the bridge. Attention will also be paid to the ways in which the bridge would be designed and constructed if it were to be built in the 21st century. The reasons why design principals and construction methods have changed will also be outlined.

Keywords: truss, stiffness, tension, deck, torsion

桥梁设计外文翻译---曼哈顿大桥的研究与分析

Figure 1: ManhattanBridge. View from Manhattan side.

1 Overview of The ManhattanBridge

The ManhattanBridge, although unfinished, was opened in 1909 and was the third bridge to span the East River running between Brooklyn and Manhattan. It was built to provide another transport link between the two boroughs.Before construction began there was a great deal of controversy over the proposed designs for thebridge.Eventually a fairly typical looking suspension bridge design was approved that was designed by engineer Leon Moisieff. The bridge was to span 448metres between piers, which was a somewhat shorter distance than the main spans of either the Brooklyn or Williamsburg bridges that neighbore it..Even though the ManhattanBridge made no advancement in the spanned length achievable by a suspension bridge, it did represent a significant stepforward in the progression of bridge building. The bridge was the first to be designed using deflection theory, which quickly replaced all previous methods of bridge design. The design also incorporated steel towers that were only braced in two dimensions rather than three. This was another aspect of bridge design that had not been seen prior to the building of the ManhattanBridge.

The entire structure of the Manhattan suspension bridge was to be designed in steel. The deck structure is comprised of four steel stiffening trusses that were each supported by regularly spaced

免费下载Word文档免费下载: 桥梁设计外文翻译---曼哈顿大桥的研究与分析

(共50页)