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Prestressed Concrete Continuous Box Girder Bridge Transverse Width Structure

A concrete and prestressed technology, applied in bridges, bridge construction, bridge parts, etc., can solve problems such as uneven settlement, shrinkage and creep deformation, complex construction, etc., achieve easy transportation and installation, reduce earthquake response, and simplify construction steps Effect

Active Publication Date: 2021-04-27
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Purpose of the invention: The present invention provides a prestressed concrete continuous box girder bridge transverse width-splicing structure, which solves the problem that the existing splicing width structure is easily deformed by uneven settlement and shrinkage and creep between the old and new bridges, and the construction is complicated

Method used

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  • Prestressed Concrete Continuous Box Girder Bridge Transverse Width Structure
  • Prestressed Concrete Continuous Box Girder Bridge Transverse Width Structure
  • Prestressed Concrete Continuous Box Girder Bridge Transverse Width Structure

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Such as Figure 1-4 As shown, the prestressed concrete continuous box girder bridge horizontally widening structure includes profiled steel plates 7, a number of longitudinally distributed steel bars 4 are welded below the profiled steel plates 7, and the bottom of the longitudinally distributed steel bars 4 is welded to the connecting steel bars 3, and the profiled steel plates 7 are welded Both sides of the flange are welded with transverse connecting steel bars 3, and the profiled steel plate 7 is provided with indentation holes 8, and the top of the profiled steel plate 7 is poured with ECC high-toughness fiber-reinforced cement-based composite material 5, and the profiled steel plate 7 and ECC high-toughness fiber The reinforced cement-based composite materials 5 can work well together as a whole, and the superimposed surface between the two can withstand a...

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PUM

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Abstract

The invention discloses a prestressed concrete continuous box girder bridge transverse width-splicing structure, which comprises a profiled steel plate, a plurality of longitudinally distributed steel bars connected to the bottom of the profiled steel plate, horizontal connecting steel bars connected to the bottom of the longitudinally distributed steel bars, and Both sides of the upper flange of the profiled steel plate are connected with horizontal connecting steel bars, the profiled steel plate is provided with indentation holes, fiber-reinforced cement-based materials are poured above the profiled steel plate, and concrete materials are sprayed below the profiled steel plate. The invention can effectively improve the additional stress of the structural splicing section due to the uneven settlement of the foundation and the shrinkage and creep of the concrete, shorten the construction period and save the cost.

Description

technical field [0001] The invention relates to a bridge structure, in particular to a transverse width-spreading structure of a prestressed concrete continuous box girder bridge. Background technique [0002] At present, a lot of research has been carried out at home and abroad on the horizontal width of bridges. The transverse widening technology of medium and small-span steel bars and prestressed concrete T-beams and slab beams has been relatively mature. However, although some researches have been done on the prestressed concrete continuous beam structure commonly used in all levels of highways, it is not yet mature. [0003] Different from the new construction of bridges, the widening reconstruction of old bridges will encounter many thorny problems. Because of this, the selection of the connection method of the old and new bridges is particularly important when splicing. In order to ensure the smoothness of the bridge deck and the safety of driving, in many engineer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D2/04E01D19/00
CPCE01D2/04E01D19/00
Inventor 刘其伟肖宏
Owner SOUTHEAST UNIV
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