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As an external prestressed concrete box girder continuous rigid-frame bridge with the longest span in China, the Xiantan Bridge was reported in this paper for its special characteristics. The key points of the end cross beam for anchorage zone and deviation block for the de viator were introduced in detail for its design. The finite element models for them with 3D FEM were created to get the stress...
As the longest span concrete bridge to be jacked up in China, this paper introduced the whole jacking plan for the long span continuous bridge in detail, presented the key mechanical characters in the construction stage when cut the main piers, suggested the measure to reduce the cracking stress to insure the safety.
For the application of FRP for prestress should have the specially anchorage system, after introduced different anchorage of many countries, the key points for FRP anchorage were introduced especially for the lateral stress limitation and the measures to reduce the lateral stress were presented. When get the total anchorage force, reducing the high lateral stress to an average level is the best way...
The Unity Bridge between Tanzania and Mozambique as the background project, the deviation block of external prestressing are analyzed with ANSYS software. When the deviators holes inner diameter are enlarged 1.5 times from 130 mm because the different deviators are applied, the concrete stresses and cracks state are introduced in detail, some suggestions for construction are presented. The results...
For a curved rigid bridge found vertical cracks in web during the construction process, the finite element software (MIDAS) was used to analysis for the creaking reason for the cast-in-place concrete box bridge. From the analysis of the objectives, the credibility of the results, foundation for modeling, the factors choice for the model and relevant experience are introduced. Including low strength...
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