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Fabricated cantilever composite structure bridge and construction method thereof

A combined structure and assembled technology, which is applied in erecting/assembling bridges, bridge construction, bridges, etc., can solve problems such as the overall thickness and self-weight of the bridge deck, many cantilever slab supports and formwork, and small prefabricated slabs. , to achieve the effect of reducing cost, facilitating construction and preventing water vapor intrusion

Pending Publication Date: 2021-06-25
SHENZHEN BRIDGE DOCTOR DESIGN & RES INSTITUDE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an assembled cantilever composite structure bridge, aiming to solve the lack of transverse wet joints in the steel-concrete composite structure bridge in the prior art; There are many slab supports and templates; small prefabricated slabs are concentrated in force, and the safety factor is small and other technical problems

Method used

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  • Fabricated cantilever composite structure bridge and construction method thereof
  • Fabricated cantilever composite structure bridge and construction method thereof
  • Fabricated cantilever composite structure bridge and construction method thereof

Examples

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Effect test

Embodiment 1

[0039] figure 1 Shown is the three-dimensional structural schematic diagram of the assembled cantilever composite structure bridge of the present invention, the bridge includes a rigid transverse connection system 2, a bridge deck and four or more steel longitudinal girders 1 juxtaposed;

[0040] The bridge deck is a prefabricated composite structure bridge deck with a variable thickness combined section according to the force distribution of the bridge;

[0041] The assembled composite structure bridge deck includes two or more cantilever bridge decks 31, 33 and one or more intermediate bridge decks 32;

[0042] The longitudinal bottoms of the cantilever bridge decks 31 and 33 are preset with longitudinal consolidation parts consolidated with steel longitudinal beams;

[0043] The horizontal connection system 2 horizontally supports the bridge deck of assembled composite structure; the two steel longitudinal girders 1 adjacent on the outside (horizontally parallel) respectiv...

Embodiment 2

[0098] Figure 7 Shown is the flow chart of the construction method of the assembled cantilever composite structure bridge of the present invention, and the method comprises steps:

[0099] S101, prefabricating a prefabricated composite structure bridge deck with a variable thickness combined section according to the force distribution of the bridge, the fabricated composite structure bridge deck includes two or more cantilever bridge decks and one or more intermediate bridge decks, cantilever The longitudinal bottom of the bridge deck is prefabricated with longitudinally consolidated components consolidated with steel longitudinal beams; prefabricated steel longitudinal beams and transverse linkages;

[0100] Specifically:

[0101] Prefabricate the contact surface of the prefabricated composite structure bridge deck with the steel longitudinal girder or the transverse connection as a thick section, and the other non-contact surfaces gradually change from a gradual section to...

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Abstract

The invention discloses a fabricated cantilever composite structure bridge and a construction method thereof. The bridge comprises a rigid transverse linkage system, a bridge deck slab and four or more parallel steel longitudinal beams. The steel longitudinal beams, the rigid transverse linkage system and the fabricated composite-structure bridge deck slab which is prefabricated according to stress distribution of the bridge and has a variable-thickness composite section are provided. Longitudinal consolidation parts consolidated with the steel longitudinal beams are pre-arranged at the longitudinal bottom of the cantilever bridge deck slab. The variable-thickness combined section is beneficial to reducing the overall self-weight of the bridge deck, the structure is light and handy, construction is convenient, and the manufacturing cost is reduced; The meshing force is improved through rabbet grooves, and the large-size rabbet grooves enable construction to be simpler and higher in efficiency, and the total manufacturing cost is saved. The cantilever bridge deck slab and the steel longitudinal beams are fixedly connected into a whole through the five longitudinal consolidation parts, so that the overall stability and safety of the bridge are improved. By means of strong longitudinal and weak transverse, transverse rabbet wet joints and longitudinal rabbet wet joints are formed, the meshing force is high, and the overall structure is stable, safe, light and high in strength.

Description

technical field [0001] The invention relates to the field of bridges and building structures, in particular to an assembled cantilever composite structure bridge and a construction method thereof. Background technique [0002] With the development of bridge technology, the steel-concrete composite structure is becoming more and more mature. The construction process is as follows: on-site assembly of steel beams, connection of high-strength bolts between segments, hoisting and installation of prefabricated slabs, installation of cantilever slab construction supports, post-casting layer construction . [0003] However, this steel-concrete composite structure still has deficiencies. For example, the height of its transverse connection system is all lower than the height of the I-beam longitudinal beams. Only the longitudinal beams play a supporting role, and the cross beams do not play a supporting role. Wet joints, poor integrity; prefabrication first and then overall pouring...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D2/00E01D21/00
CPCE01D2/00E01D21/00
Inventor 李勇刘秋红刘念琴马立平李敏文剑波
Owner SHENZHEN BRIDGE DOCTOR DESIGN & RES INSTITUDE CO LTD
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