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A short-line prefabricated assembly method for segmental beams with variable cross-section

A technology of prefabricated assembling and segmental beams, which is applied in bridges, bridge construction, erecting/assembling bridges, etc., can solve the problem of wasting time, and achieve the effects of easy template adjustment, shortening the assembling period, and improving the prefabrication efficiency.

Active Publication Date: 2020-04-17
CHINA FIRST HIGHWAY ENG +1
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  • Claims
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the waste of time due to the modification of multiple sets of large templates in the prefabrication of variable cross-section segmental beams due to the consideration of the adjustment of the transverse slope under the existing technical means

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  • A short-line prefabricated assembly method for segmental beams with variable cross-section
  • A short-line prefabricated assembly method for segmental beams with variable cross-section
  • A short-line prefabricated assembly method for segmental beams with variable cross-section

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Embodiment Construction

[0021] The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:

[0022] Such as Figure 1 to Figure 4 As shown, the present invention relates to a short-line prefabricated assembly method of segmental beams with variable cross-section, which is characterized in that it comprises the following steps:

[0023] Step 1, formwork partition design: Divide the overall formwork 1 into forward formwork 2 and reverse formwork 3 connected together, and divide the forward formwork 2 and reverse formwork 3 into 3 respectively according to the inclination and straightness of the main girder web A formwork prefabrication system 4, the formwork prefabrication system 4 is set according to the height difference of the segmental beam 5.

[0024] Step 2, fabrication of forward prefabricated beams: in the forward formwork 2, according to the transverse slope under the overall coordinates of the whole bridge, prefabricate the segmental b...

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Abstract

The invention relates to a short-line prefabrication assembly method for a variable section segmental beam, belonging to the technical field of bridge construction. The short-line prefabrication assembly method includes the divisional design of a template, the manufacturing of a forward prefabricated beam, the manufacturing of a reverse prefabricated beam, the assembly of segmented beams and the like. The short-line prefabrication assembly method has the beneficial effects that a prefabricated pedestal can be fully effectively utilized, a formwork system is prefabricated by only adopting a small number of segmental beams, thus the prefabrication of all the variable section segmental beams of the main bridge can be completed, modification time of the large template caused by adjustment dueto a cross slope is avoided, the beam problems such as template idleness are avoided, the prefabrication work efficiency is greatly improved, the template adjustment is simple, convenient and accurate, and the sequence synchronization of prefabrication and on-site assembly is realized, which reduces the difficulty of construction coordination and shortens the assembly period.

Description

technical field [0001] The invention relates to a short-line prefabricated and assembled method for variable-section segmental beams, which belongs to the technical field of bridge construction. Background technique [0002] Based on the usual short-line matching prefabrication process, several pedestals are set up, and the first section is prefabricated on the pedestals with fixed end molds and movable end molds, and the first section is used as the matching beam to match and prefabricate to the mid-span in turn, and half of the T structure is completed. , and then use the other end of the first block as the matching surface to complete the other half of the T structure by matching prefabrication, that is, prefabrication follows one-way matching; and if the two-way matching of variable-section segmental beams adopts one-way matching, it is necessary to adjust the formwork to achieve The prefabrication of the front and back slopes and the adjustment of large formwork will in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D2/00E01D21/00
CPCE01D2/00E01D21/00
Inventor 胡古月胡风明李响尉洪利李明罗家宇秦佳黄永亮王一霏胡平洪矿孙启炜
Owner CHINA FIRST HIGHWAY ENG
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