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Model Test on Cable Girder Anchor Segments of Jia Yue Large Bridge

Author: XiaoBo
Tutor: GuAnBang；ZhangXueSong
School: Chongqing Jiaotong University
Course: Bridge and Tunnel Engineering
Keywords: Extradossed bridges Anchorage Zones Scale model test Simulation Analysis Sensitivity analysis Control of the construction process
CLC: U446.1
Type: Master's thesis
Year: 2010
Downloads: 69
Quote: 1
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Abstract


Low tower cable-stayed bridge is a combination of structural system , its mechanical properties between continuous girder bridge and a cable-stayed bridge . Because of its good economic characteristics and aesthetic effect , been a rapid development in recent years , both at home and abroad . The main girder anchorage zone is a key force transmission parts extradossed bridges , basic cable powerful centralized force , security , evenly delivered to the main beam . Main girder anchorage zone load space and complex structures , power transmission path , the uneven distribution of stress , the failure mechanism is complex . Therefore , Anchorage Zones is the the dwarf tower cable-stayed design and construction difficulties and key . Purely mechanical analysis is difficult to fully reflect the actual state of the structure and the stress distribution , the only binding model test to its scientific research . Chongqing Kaetsu Bridge engineering background , through the the Anchorage Zones scale model tests and finite element analysis and comparison to identify the complex stress state to test the mechanical properties of the anchorage zone , proposed improvements for the existing problems and recommendations. Correctness and applicability of the first use of ANSYS software for the space stress finite element analysis ; against the Anchorage Zones 4T7 segment then scale model test carried Anchorage Zones segment calculated model values ??, validate the model design relevant parameter sensitivity analysis ; through the limited space elements create a solid model to study the loss of beams prestressed box girder stress magnitude and distribution of the impact of the thickness of the beam ; according to the the space stress analysis and scale model test results , prestressed construction the recommendations and requirements of the proposed guidance , vacuum assisted grouting , concrete construction quality control , construction control engineering entity .

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CLC: > Transportation > Road transport > Bridges and Culverts > Bridge test observations with the test > Bridge test equipment
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