铁道标准设计
鐵道標準設計
철도표준설계
RAILWAY STANDARD DESIGN
2014年
3期
76-79
,共4页
整体钢箱梁%多箱式%顶推%变形控制
整體鋼箱樑%多箱式%頂推%變形控製
정체강상량%다상식%정추%변형공제
whole steel box girder%multi-box%incremental launching%deformation control
结合丰双铁路分离式立交桥工程实践，重点介绍在连续钢箱梁顶推过程计算中对梁底不平顺的一种简单准确的处理方式，通过对比监控数据，验证了这种处理方式计算竖向变形的准确性。同时介绍本桥设计中对顶推竖向变形控制采取的一系列措施，从而保证了特殊情况下主梁跨越最大跨度后顺利上墩，也对多箱式钢箱梁整体顶推中的一些问题进行反思和探讨，以期在其他类似工程中加以借鉴。
結閤豐雙鐵路分離式立交橋工程實踐，重點介紹在連續鋼箱樑頂推過程計算中對樑底不平順的一種簡單準確的處理方式，通過對比鑑控數據，驗證瞭這種處理方式計算豎嚮變形的準確性。同時介紹本橋設計中對頂推豎嚮變形控製採取的一繫列措施，從而保證瞭特殊情況下主樑跨越最大跨度後順利上墩，也對多箱式鋼箱樑整體頂推中的一些問題進行反思和探討，以期在其他類似工程中加以藉鑒。
결합봉쌍철로분리식입교교공정실천，중점개소재련속강상량정추과정계산중대량저불평순적일충간단준학적처리방식，통과대비감공수거，험증료저충처리방식계산수향변형적준학성。동시개소본교설계중대정추수향변형공제채취적일계렬조시，종이보증료특수정황하주량과월최대과도후순리상돈，야대다상식강상량정체정추중적일사문제진행반사화탐토，이기재기타유사공정중가이차감。
In combination with engineering practice of the overpass bridge above the Fengtai-Shuangqiao Railway, this paper emphatically introduced a simple and accurate handling way to simulate the bottom unevenness of the continuous steel box girder during the calculation of incremental launching process. Afterwards, in comparison with monitoring data, the accuracy of vertical deformation calculation by this handling way was verified. At the same time, this paper demonstrated a series of measures about how to control the vertical deformation during the design of incremental launching process for this bridge. As a result, these measures were so effective that the main girder could be installed upon bridge piers successfully after crossing the maximum span under special circumstance. Moreover, this paper introspected and discussed some problems in the design of incremental launching process of steel multi-box girder, in the hope of serving as a reference for other similar projects.
