Design of Simple Span Prestressed Steel Bridge

• Main Authors: Lu.Chieh-Ping, 呂介平
• Other Authors: 王錦華
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/61000708766892341399

碩士 === 大漢技術學院 === 土木工程與環境資源管理研究所 === 102 === The purpose of this study is to analyze the application of Seismic Design Specifications for Highway on prestressed steel structure bridges, moreover compare economic of the prestressed steel plates beams and the conventional of steel plates beams, promoting the use of the prestressed steel plates beams in order to energy saving and carbon reduction. The prestressed steel structure main to: (1) Fully and repeatedly use the amplitude of elastic strength steel. (2) Improve the structure of the stress state, decrease the member section to save steel. (3) Increase structural rigidity and stability, improve various properties of the structure. This study is adopt a single span of 45M, 60M and 75M as variables, using prestressed steel plate beams with conventional steel sheet designed to evaluate the design results respectively. Case of the bridge wide is designed to 13M, has four steel beams, beam spacing of 3.5M. Design live load is based on HS20-44 (MS18) 1.25 times for the load of calculation and analysis. The results show that single-span simply supported prestressed steel plate beams, in the different span, which reduces the amount of steel 18.05 to 20.91%, helping to reduce the waste of natural resources. Compared with the conventional steel plate beams, considering after the production costs, the prestressed steel plate beams of cost can be reduced to 13%; When using prestressed steel plate beams design, along with the gradual increase in the span, gradually reduce the efficiency of reducing the amount of steel, but due to the production costs of the prestressed system, the economic benefit of cost reduction is much better.