A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Linear adjustment construction method for pushing construction of steel box girder of underpass and overpass existing traffic line
The invention belongs to the technical field of building construction, and particularly discloses an underpass and overpass existing traffic line steel box girder incremental launching construction linear adjustment construction method. On the basis of a steel box girder incremental launching construction method, the principle that a continuous beam is changed into a simply supported beam and the simply supported beam is changed into the continuous beam is used; the purpose of incremental launching construction of the herringbone slope steel box girder under the limited space condition is achieved through leveling accurate incremental launching and open-fold line linear adjustment welding, and the influence on normal traffic of an existing traffic line is reduced to the maximum extent. A steel box girder is located on a herringbone slope under the condition of a limited space, the steel box girder is divided into a plurality of sections in the steel box girder splicing process, a leveling plate at a fold line is additionally arranged at the sections, the elevation difference of a girder bottom is reduced, the leveled steel box girder is temporarily welded and pushed in place, then the leveling plate at the fold line is cut, and welding is conducted again after the steel box girder is adjusted to be in a designed line shape section by section. And finally, the beam is dropped to the designed elevation, the investment of people, materials and machines such as temporary supports and trusses is reduced, the key line construction time is shortened, and the material utilization rate and the turnover rate are increased.
本发明属于建筑施工技术领域，具体公开了下穿上跨既有交通线路钢箱梁顶推施工线形调整施工方法，在钢箱梁顶推施工工法基础上，运用连续梁变简支梁、简支梁再变连续梁原理，通过调平精确顶推+开折线线形调整焊接达到有限空间条件下人字坡钢箱梁顶推施工的目的，最大限度减少对既有交通线路正常通行的影响。有限空间条件下钢箱梁处于人字坡上，在钢箱梁拼装过程中将钢箱梁分为若干节段，分段处增加折线处调平板，减少梁底标高高差，将调平后的钢箱梁临时焊接，顶推到位后切割折线处调平板，逐段调整至设计线形后重新施焊，最后落梁至设计标高，减少了临时支架、桁架等人材机投入，缩短了关键线路施工时间，提高材料利用和周转率。
Linear adjustment construction method for pushing construction of steel box girder of underpass and overpass existing traffic line
The invention belongs to the technical field of building construction, and particularly discloses an underpass and overpass existing traffic line steel box girder incremental launching construction linear adjustment construction method. On the basis of a steel box girder incremental launching construction method, the principle that a continuous beam is changed into a simply supported beam and the simply supported beam is changed into the continuous beam is used; the purpose of incremental launching construction of the herringbone slope steel box girder under the limited space condition is achieved through leveling accurate incremental launching and open-fold line linear adjustment welding, and the influence on normal traffic of an existing traffic line is reduced to the maximum extent. A steel box girder is located on a herringbone slope under the condition of a limited space, the steel box girder is divided into a plurality of sections in the steel box girder splicing process, a leveling plate at a fold line is additionally arranged at the sections, the elevation difference of a girder bottom is reduced, the leveled steel box girder is temporarily welded and pushed in place, then the leveling plate at the fold line is cut, and welding is conducted again after the steel box girder is adjusted to be in a designed line shape section by section. And finally, the beam is dropped to the designed elevation, the investment of people, materials and machines such as temporary supports and trusses is reduced, the key line construction time is shortened, and the material utilization rate and the turnover rate are increased.
本发明属于建筑施工技术领域，具体公开了下穿上跨既有交通线路钢箱梁顶推施工线形调整施工方法，在钢箱梁顶推施工工法基础上，运用连续梁变简支梁、简支梁再变连续梁原理，通过调平精确顶推+开折线线形调整焊接达到有限空间条件下人字坡钢箱梁顶推施工的目的，最大限度减少对既有交通线路正常通行的影响。有限空间条件下钢箱梁处于人字坡上，在钢箱梁拼装过程中将钢箱梁分为若干节段，分段处增加折线处调平板，减少梁底标高高差，将调平后的钢箱梁临时焊接，顶推到位后切割折线处调平板，逐段调整至设计线形后重新施焊，最后落梁至设计标高，减少了临时支架、桁架等人材机投入，缩短了关键线路施工时间，提高材料利用和周转率。
Linear adjustment construction method for pushing construction of steel box girder of underpass and overpass existing traffic line
下穿上跨既有交通线路钢箱梁顶推施工线形调整施工方法
SONG PENGFEI (author) / ZHANG WEIXIAO (author) / TAN ZHIWEN (author) / XIONG BIN (author) / YU ZHIGANG (author) / YANG JUNQIANG (author) / CHEN HUANG (author) / WANG JUNSHAN (author) / MA MING (author) / YANG JIDONG (author)
2023-10-03
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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