Novel variable-section beam moving die frame and construction method thereof
A technology of variable cross-section beam and moving formwork, which is applied in bridges, bridge construction, erection/assembly of bridges, etc. The effect of leg length
Inactive Publication Date: 2013-07-24
SHANDONG BORUI HEAVY MACHINERY
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Problems solved by technology
[0002] Conventional mobile formwork through holes, because there is no influence of box girder widening, can realize two main girders running in parallel, but for the case of box girder with variable cross-section, there are many difficulties in parallel walking of two main girders through formwork holes, for example, due to The cross-section of the box girder changes. If the two main girders run in parallel, it is necessary to increase the distance between the mold opening and the length of the corbel, resulting in poor stability of the via hole
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[0022] Attached below figure 1 , attached figure 2 , attached image 3 , attached Figure 4 The present invention will be further described.
[0023] as attached figure 1 , attached figure 2 As shown, the mobile formwork of the variable cross-section beam includes the corbel 6 installed on the bridge pier 1, the main girder 5 arranged above the corbel 6 and located on both sides of the pier 1, and several girders installed on the two main girders 5 A set of crossbeams 4, a deflection device is provided between the main beam 5 and the corbel 6 to make the main beam 5 offset relative to the corbel 6, and a deflection device is provided between the main beam 5 and the crossbeam 4 to make the crossbeam 4 relative to The main beam 5 generates a traverse device for traverse. After the box girder is poured, the main girder 5 is dropped from the mold by the jack, the main girder 5 is offset by the deflection device, and the cross beam 4 remains still. Afterwards, the longitud...
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The invention relates to a novel variable-section beam moving die frame and a construction method thereof. After a box beam is poured, a girder is demolded through a jack and is deflected through a deflection device, and a beam is kept being fixed; then a longitudinal moving oil cylinder pushes the girder to drive the beam and a template to longitudinally move; in the longitudinal moving process, a transverse moving device adjusts the relative positions of the beam and the girder; when the girder longitudinally moves in place, the beam is subjected to die assembling, and the transverse position of the girder is adjusted again by the deflection device; and the jack jacks the girder to be adjusted in place. The variable-section box beam is constructed in a manner that two girders travel in an unparallel manner; a die opening distance is not required to be widened and the length of a bracket is not required to be prolonged; and therefore, a phenomenon of reduction of the stability of a penetration hole is avoided.
Description
technical field [0001] The invention relates to the field of bridge construction, in particular to a mobile formwork and a construction method thereof. Background technique [0002] Conventional mobile formwork through holes, because there is no influence of box girder widening, can realize two main girders running in parallel, but for the case of box girder with variable cross-section, there are many difficulties in parallel walking of two main girders through formwork holes, for example, due to The cross-section of the box girder changes. If the two main girders run in parallel, it is necessary to increase the distance between the mold opening and the length of the corbel, resulting in poor stability of the via. In order to ensure the lateral stability of the moving formwork, it is necessary to realize the oblique travel of the two main girders so that the main girders are not parallel to the longitudinal movement through the hole. Contents of the invention [0003] In ...
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Inventor 秘嘉川李文英李震王小山
Owner SHANDONG BORUI HEAVY MACHINERY