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Study on Key Construction Technology in Low-pylon Cable-Stayed Concrete Bridges

Author: LiXiaoJun
Tutor: XieShangYing
School: Southwest Jiaotong University
Course: Bridge and Tunnel Engineering
Keywords: low-pylon cable-stayed bridge Luzhou qiancao Changjiang river bridge main tower cast in place cantilever construction for main girder stay cable construction techniques
CLC: U448.27
Type: Master's thesis
Year: 2009
Downloads: 71
Quote: 1
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Abstract


As an important compotent of the transportation infrastructure,bridge engineering has great effect on development of the national economy,promoting social progress and consolidating national defense etc. "The bridge’s construction and development are represent of the country’s economic prosperity and development of arts and culture".The low-pylon cable-stayed bridge (that is also called as partial cable-stayed bridge) is a new bridge structure form,which has the characteristics as low-pylon,rigid-beam and concentrated-cable. The low-pylon cable-stayed bridge is similar to traditional cable-stayed bridge in its appearance,while it is more closer to continuous rigid-frame bridge or continuous beam bridge in its stress characteristics and construction technology.Bridge of this kind is beautiful,economical and reasonable.The thesis takes the Qiancao Changjiang river Bridge,with span of 128+248+128m in Luzhou city of Sichun province, as background,and studies key construction techniques of low-pylon cable-stayed bridge of this kind in detail.Thesis has done the main work as follows:1. Review of structural form and stress characteristic of the low-pylon cable-stayed bridge as well as the present situation of key construction techniques of low-pylon cable-stayed bridge at home and abroad, including main tower construction, cast in place cantilever construction for prestressed concrete box girder and key construction technology for stay cable.2. The reasonable construction method for the low-pylon cable-stayed bridge is discussed on according to structural characteristic under force of pylon,girder and cable,and providing a reference to the construction for bridge of this type.3. Taking the Qiancao Changjiang river Bridge as background for the project, the thesis carries out the simulation of bridge in the construction stage and finished stage with the help of MIDAS/civil soft,as the same moment it studies construction control of the low-pylon cable-stayed bridge providing a reference to the construction for bridge of this type.

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CLC: > Transportation > Road transport > Bridges and Culverts > All kinds of bridges > Bridge: Structure > Cable-stayed bridge
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