畢業(yè)論文外文翻譯---大跨徑連續(xù)梁橋施工控制的內(nèi)容與方法探析-其他專業(yè)(編輯修改稿)
2025-02-24 05:07 本頁面
【文章內(nèi)容簡介】 deformation, stress control not do one39。s best to structural damage, serious will happen structural damage ( China Ningbo Zhaobaoshan Bridge Girder fracture is one example), therefore, must be the implementation of strict control on structural stress. Stress control of the project and the precision is not well defined, according to the actual situation, usually including: The structure caused by stress ( the actual stress and design phase should be controlled within + 5% ). The structure under construction load stress ( the actual stress and design phase should be controlled within + 5% ). The structure of prestressing force in addition to the tensioning implement double control ( oil gauge control and elongation control, elongation error allowed within plus or minus 6% ), must also consider the pipe friction influence ( for post tensioned structure ). The temperature stress, especially large volume foundation, pier column. The other stresses, such as foundation displacement, wind load, snow load caused by structural stress. The construction used in the bridge construction safety has a direct influence on the rack, basket, cable hoisting system in a safe range of stress. stability control The stability of bridge structure is related to the safety of bridges, it is with bridge strength has equal or even more important. The world has had many bridges in the construction process due to instability and cause the whole bridge failure examples, the most typical is Quebec Canada ( Quebec ) bridge. The bridge on the south side of the anchor frame truss is finished, because the cantilever end of the buckling of web plate and the bottom chord bar suddenly collapses fall. China Sichuan River Bridge by cantilever girder hoisting system in main span of bear large axial force and failure. Therefore, the construction process of the bridge construction should not only strictly control the stress and deformation, and to strictly control in each stage of construction structure of local and overall stability. Mainly through the stability analysis ( stability safety coefficient ), and with the structural stress, deformation to prehensive assessment, control of its stability. safety control Bridge construction safety control during the bridge construction control is the important content in the construction process, only to ensure the safety, just talk to go up the other control and bridge construction, in fact, bridge construction safety control is the control of deformation, stress control, stability control integrated embodiment, each of the above gets out of control, safety get control ( because the bridge construction quality problems caused by security issues except). Due to the structure of different forms, directly affects the construction safety factors are not the same, in construction control of the basis of the actual situation, determine its safety control key. 4 construction control method Continuous beam bridge construction monitoring and recognition is to adjust to the trailer, construction cycle, its essence is to make construction according to a predetermined desired state (mainly the construction elevation ) smoothly. But whether the theoretical ideal state, or the actual construction error, therefore, construction control of the core mission is to all sorts of error analysis, recognition, adjustment of structure, making predictions. predicti
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