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A platform for research: civil engineering, architecture and urbanism
Construction method for hogging moment notch of small-radius curve ramp bridge plate
The invention discloses a construction method for a hogging moment notch of a small-radius curve ramp bridge plate, and relates to the technical field of bridge construction. The construction method for the hogging moment notch of the small-radius curve ramp bridge plate comprises the following steps: S1, prefabricating a box girder: using a comb-shaped formwork made of steel, attaching a tooth-shaped steel plate at the bottom of the formwork to the top of a core formwork, and after box girder concrete pouring is completed, reserving a notch to penetrate through a box girder top plate. According to the construction method for the hogging moment notch of the small-radius curve ramp bridge plate, a method that a tensioning notch reserved in the box girder penetrates through the top plate ofthe box girder is adopted to make the bottom of the tensioning notch in a disengaged state, so the problem that in the tensioning process, the bottom of the tensioning notch hinders tensioning machines and tools such as jacks is completely solved; and due to the fact that a formwork hanging method is adopted for blocking the reserved notch, concrete at the reserved notch is formed through one-timepouring, and the problem that in a traditional construction method, the contact area of new concrete and old concrete is too large, contact is not tight, and concrete layering is caused is solved.
本发明公开了一种小半径曲线匝道桥梁板负弯矩槽口的施工方法，涉及桥梁施工技术领域。该小半径曲线匝道桥梁板负弯矩槽口的施工方法，包括如下步骤：S1、预制箱梁，利用钢制的梳型模板，将模板底部的齿状钢板贴于芯模顶部，使箱梁混凝土浇筑完成后，预留槽口贯通箱梁顶板。该小半径曲线匝道桥梁板负弯矩槽口的施工方法，采用将箱梁预留的张拉槽口贯通箱梁顶板的方法，使张拉槽口底部处于脱空状态，完全解决了张拉过程中张拉槽口底部对千斤顶等张拉机具的阻碍问题，由于采用吊模法封堵预留槽口，该处的混凝土为一次浇筑成型，解决了传统施工方法中新旧混凝土接触面积过大，接触不紧密产生混凝土分层的问题。
Construction method for hogging moment notch of small-radius curve ramp bridge plate
The invention discloses a construction method for a hogging moment notch of a small-radius curve ramp bridge plate, and relates to the technical field of bridge construction. The construction method for the hogging moment notch of the small-radius curve ramp bridge plate comprises the following steps: S1, prefabricating a box girder: using a comb-shaped formwork made of steel, attaching a tooth-shaped steel plate at the bottom of the formwork to the top of a core formwork, and after box girder concrete pouring is completed, reserving a notch to penetrate through a box girder top plate. According to the construction method for the hogging moment notch of the small-radius curve ramp bridge plate, a method that a tensioning notch reserved in the box girder penetrates through the top plate ofthe box girder is adopted to make the bottom of the tensioning notch in a disengaged state, so the problem that in the tensioning process, the bottom of the tensioning notch hinders tensioning machines and tools such as jacks is completely solved; and due to the fact that a formwork hanging method is adopted for blocking the reserved notch, concrete at the reserved notch is formed through one-timepouring, and the problem that in a traditional construction method, the contact area of new concrete and old concrete is too large, contact is not tight, and concrete layering is caused is solved.
本发明公开了一种小半径曲线匝道桥梁板负弯矩槽口的施工方法，涉及桥梁施工技术领域。该小半径曲线匝道桥梁板负弯矩槽口的施工方法，包括如下步骤：S1、预制箱梁，利用钢制的梳型模板，将模板底部的齿状钢板贴于芯模顶部，使箱梁混凝土浇筑完成后，预留槽口贯通箱梁顶板。该小半径曲线匝道桥梁板负弯矩槽口的施工方法，采用将箱梁预留的张拉槽口贯通箱梁顶板的方法，使张拉槽口底部处于脱空状态，完全解决了张拉过程中张拉槽口底部对千斤顶等张拉机具的阻碍问题，由于采用吊模法封堵预留槽口，该处的混凝土为一次浇筑成型，解决了传统施工方法中新旧混凝土接触面积过大，接触不紧密产生混凝土分层的问题。
Construction method for hogging moment notch of small-radius curve ramp bridge plate
一种小半径曲线匝道桥梁板负弯矩槽口的施工方法
MA SHENGFU (author) / ZHANG NING (author) / ZHANG BIN (author) / JIA GUOJUN (author)
2020-07-03
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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