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Application and Research of the External Prestressed Technique in Continuous Beam Bridge Reinforcement

Author: YangHongBo
Tutor: ZhangZhe
School: Dalian University of Technology
Course: Bridge and Tunnel Engineering
Keywords: Bridge strengthening Prestressing Bridge Durability
CLC: U445.72
Type: Master's thesis
Year: 2006
Downloads: 394
Quote: 13
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Abstract


With the passage of time and economic development more and more suited to bridge traffic needs. Reinforcement and repair of the bridge is the main method to solve this problem one . Therefore, reinforcement and maintenance of the bridge project has become a hot issue . In this paper, the commonly used method of highway girder bridge reinforcement , such as thickening of the deck reinforcement method , increasing the beam rib reinforcement method , steel reinforcement method paste , paste fibrous material reinforcement method , external prestressing side reinforcement method , changing the structural system reinforcement method, etc. studied and introduced the method of reinforcement reinforcement principle and characteristics. In this paper, prestressing reinforcement method for in-depth study . Based on the analysis of domestic and foreign experimental research data , design specifications and related documents , based on the more systematic study of the structure of the bridge prestressing reinforcement and prestressing reinforcement system for the mechanical analysis , combined with the actual project discussed in vitro pre- the general design stress reinforcement method content and design steps. Specifically the following research : ( 1 ) discussed the status of the bridge and abroad , to clarify aspects of the research work carried out bridge strengthening the necessity and urgency. ( 2 ) This paper made ??a detailed analysis of the bridge reinforcement mechanism , the use of the basic principles of mechanics of materials bridge reinforcement principle , to discuss suitable for highway girder bridge reinforcement methods, and methods of reinforcement reinforcement design methods are analyzed introduction. ( 3 ) for the more commonly used prestressing reinforcement method , described in detail the structure externally prestressed bridges and prestressing system for mechanical analysis . ( 4 ) Based on actual project , the bridge on the external prestressing reinforcement design calculations for the actual implementation of the project to provide a reference . ( 5 ) For external prestressed concrete structures , prestressed cable corrosion is very important, it is related to the structural safety and reliability . For prestressing the various components of the structure proposed to improve the durability of externally prestressed structures construction measures .

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CLC: > Transportation > Road transport > Bridges and Culverts > Bridge Construction > Bridge maintenance, repair and remediation > Bridge strengthening
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