The Bracket Stress Calculation Model Of The Great Volume 0# Block Constructs And The Monitoring Engineering Research At Different Times

Upside the continual rigid frame bridge 0 blocks are in the king post with the lower part bridge pier attachment point, not only is the king post bracket casting foundation, moreover is the stress most complex component, usually uses the temporary bracket to take 0 stage construction work the platform and the stress support structure.The common bracket design is the concrete which constructs many times 0 blocks regards as is completely by bracket withstanding, will request the bracket to have the huge bearing capacity inevitably.But, in fact already constructed the concrete together will withstand the following construction with the bracket the concrete weight.The present paper explores 0 blocks through the numerical analysis method at different times to construct various part of 0 block stress, the distortion situation which in the process the bracket and constructs successively forms, thus for this kind of bridge 0 block bracket design, the research work provides the theory basis.This article first summarized the continual rigid frame bridge great volume 0 block construction survey and 0 block bracket construction control technology present situation.And take the Chongqing fish hole Wuhan Bridge (260m pre-stressed continual rigid frame) as the project backing, the use large-scale structure finite element analysis software ANSYS parametrization design language, has established the 0# block, the pillar body and the bracket whole three dimensional analysis model, has simulated the construction process which the fish hole Wuhan Bridge 0# block three times constructs, analyzed and grasps each has constructed the construction stage 0# block and the bracket distortion and the stress distributed situation at different times in the 0# block.And compares the 0# block disposable construction formation and the 0# block through the analysis constructs the formation at different times the bracket carline stress value, obtains time concrete participation following 0# block construction stress degree coefficient which the 0# block already constructed.In addition, unifies the plane link is in the structure software MIDAS bracket model computed result and the construction monitoring tentative data, carries on the comparison with the three-dimensional space analysis result, realizes to the numerical analysis result overall appraisal.Finally makes the summary to the present paper, and constructs the bracket stress computation model and the 0# block construction monitoring thorough work goal at different times to the great volume 0# block makes the forecast.