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Segmental cantilever assembly pier capping beam and assembling method thereof

A section and cover beam technology, applied in the erection/assembly of bridges, bridges, bridge parts, etc., can solve problems such as adverse effects on bridge safety and durability, increase in length and self-weight of cover beams, and impact on cover beam hoisting construction, etc. Achieve the effect of reducing construction difficulty and risk construction risk, simple and fast construction, and easy quality assurance

Pending Publication Date: 2018-11-09
SHANGHAI MUNICIPAL ENG DESIGN INST GRP +1
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  • Abstract
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Problems solved by technology

[0006] However, when the bridge width and the cantilever of the cover girder are large, the length and self-weight of the cover girder will also increase accordingly.
Excessive self-weight not only affects the hoisting construction of the cover beam, but also adversely affects the safety and durability of the ground roads and bridges during transportation

Method used

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  • Segmental cantilever assembly pier capping beam and assembling method thereof
  • Segmental cantilever assembly pier capping beam and assembling method thereof

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Embodiment Construction

[0032] The present invention will be described in detail below according to the accompanying drawings and specific embodiments of the present invention.

[0033] The figure includes: fulcrum segment 1, cantilever segment 2, temporary prestressed reinforcement 3, and permanent prestressed reinforcement 4.

[0034] As shown in the figure, a segmental cantilever assembled pier cover girder is characterized in that the cover girder is spliced ​​by several prefabricated cover beam segments along the length of the cover girder, and the joints between adjacent prefabricated cover beam segments The form is a corbel-type vertical seam, the corbel-type vertical seam includes a vertical seam and a horizontal seam, shear keys are provided on the end faces of the cover beam segments on both sides of the seam, and the prefabricated cover beam The end faces of the segments are coated with epoxy adhesive, and the adjacent prefabricated segments are bonded by epoxy adhesive.

[0035] As shown...

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Abstract

The invention discloses a cantilever segment assembly pier capping beam suitable for rapid safety site construction. The cantilever segment assembly pier capping beam suitable for rapid safety site construction is characterized in that the capping beam is spliced by using a plurality of precast capping beam segments along the length of the capping beam; joints between the adjacent precast cappingbeam segments are in the forms of bracket type vertical splicing joints; shear keys are arranged on the end surfaces of the capping beam segments on the two sides of the joints; epoxy adhesives are coated on the end surfaces of the precast capping beam segments; and the adjacent precast capping beam segments are bonded by using the epoxy adhesives. The cantilever segment assembly pier capping beamusing the assembling method is beneficial for promoting miniaturization and light weight of precast assembly members; the transporting and hoisting difficulty is reduced; under an equivalent transporting and hoisting condition, more wide bridge capping beams can be constructed in a precast assembly manner so that the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of bridge structure design and construction, in particular to a structural form of a prefabricated bridge pier cover beam, in particular to a segmental cantilever assembled bridge pier cover beam and an assembly method thereof. Background technique [0002] In recent years, prefabricated bridges have been vigorously promoted and applied more and more in our country. [0003] Prefabricated bridges have received extensive attention and research due to their many advantages such as shortening the construction period, improving efficiency, reducing the impact of construction on the current traffic, and adapting to modern and intensive production development models. The early prefabricated assembly technology of bridges was mainly aimed at the superstructure. With the development of urban economy and the improvement of urban comprehensive level, the requirements for the environment were higher, which put forward ...

Claims

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Application Information

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IPC IPC(8): E01D19/04E01D19/00E01D21/00
CPCE01D19/04E01D19/00E01D21/00
Inventor 卢永成查义强李国平黄巍峰陈明朱世峰陈逸群卫张震
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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