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Post-poured hidden coping construction method for converting simply supported beams into continuous beams

A technology of simply supported beams and concealed girders, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of construction costs and construction speeds that need to be further improved, and achieve lightweight components, compact shapes, and fast construction speeds Effect

Active Publication Date: 2009-09-23
HONGRUN CONSTR GROUP STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in bridge construction, people have adopted a simple-supported variable-continuous bridge construction technology, that is, prefabricated prestressed concrete hollow slab girders in the factory, and erected temporary brackets on site to install them in place, and the slab girders on both sides are prefabricated through on-site pouring. The stress-reinforced concrete cover-beam connection converts simply supported slab girders on both sides into continuous slab girders. The construction cost of this process still has room to save, and the construction speed needs to be further improved.

Method used

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  • Post-poured hidden coping construction method for converting simply supported beams into continuous beams
  • Post-poured hidden coping construction method for converting simply supported beams into continuous beams
  • Post-poured hidden coping construction method for converting simply supported beams into continuous beams

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Embodiment Construction

[0031] Such as figure 1 As shown, in process 101, the structural design of the combined support and cast-in-place cover beam (or simply cover beam) formwork is carried out, wherein the combined support is based on the installation construction load of the prefabricated slab girder and the cast-in-place construction load of the cast-in-place cover beam, At the same time, considering the working load of the operating platform at both ends of the cast-in-place cover beam, the structural design is carried out according to the most unfavorable working condition of the combined support. The material of the combined support is Q235 steel and steel plate of different types and specifications. The specifications and sizes of seams are determined by design calculations.

[0032] The formwork of cast-in-place cover beam 10 adopts wooden formwork to carry out construction, and the panel of its base mold is plastic surface nine splints, as figure 2 and image 3 As shown, the corrugated ...

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Abstract

The invention discloses a post-poured hidden coping construction method for converting simply supported beam into continuous beam. Plate girders are precast in a plant, are then connected with precast plate girders at two sides thereof via cast-in-situ copings so as to convert the precast plate girders into continuous beams, wherein the method of combining supports is adopted to carry out construction, in the method, a temporary support for installing the precast plate girders and a formwork support for installing the post-poured hidden copings are combined to be one, thus obtaining excellent effect.

Description

technical field [0001] The invention relates to a construction method for municipal bridge construction, in particular to a construction method for a post-cast concealed cover beam in which simply supported beams are converted into continuous beams. Background technique [0002] With the development of a large number of urban municipal construction projects, the construction quality and progress requirements of municipal bridge construction have also gradually increased. The traditional simply supported slab girder only adopts continuous bridge deck, and its stress structure needs to be improved. At present, in bridge construction, people have adopted a simple-supported variable-continuous bridge construction technology, that is, prefabricated prestressed concrete hollow slab girders in the factory, and erected temporary brackets on site to install them in place, and the slab girders on both sides are prefabricated through on-site pouring. The stress-reinforced concrete cov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
Inventor 欧祝明林定雄翟羽佳章铭荣葛海峰张存才
Owner HONGRUN CONSTR GROUP STOCK
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