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Structuring and constructing method for segment prefabricated spliced concrete arch bridge

A prefabricated assembly and concrete technology, which is applied to arch bridges, erection/assembly bridges, bridges, etc., can solve the problems of long construction period, large support investment, and large construction interference, and achieve the effects of quality improvement, safety enhancement, and safety risk reduction

Inactive Publication Date: 2018-09-25
NORTHEAST FORESTRY UNIVERSITY
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  • Application Information

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Problems solved by technology

[0002] At present, the construction of small and medium-span concrete arch bridges generally adopts arch frame cast-in-place, cable tower buckle-hung cantilever construction and other technologies. These methods generally have problems such as large support investment, large construction interference, and long construction period.

Method used

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  • Structuring and constructing method for segment prefabricated spliced concrete arch bridge
  • Structuring and constructing method for segment prefabricated spliced concrete arch bridge
  • Structuring and constructing method for segment prefabricated spliced concrete arch bridge

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] like Figure 1-7 As shown, the structure of a segmental prefabricated assembled concrete arch bridge includes a prefabricated segment 1 of an arch ring, a prefabricated steel hinge 2, a prefabricated segment 3 of a soffit, and a prefabricated steel plate 4; the arch ring is composed of a plurality of prefabricated segments The prefabricated segments 1 of the arch ring are connected by pre-embedded steel hinges 2. During the hoisting and lifting process, a curved arch ring is automatically formed. The arch ring is located on the concrete abutment 5, and the soffit is located on the arch ring , consisting of a plurality of prefabricated segments, the soffit prefabricated segments 3 are symmetrically hoisted, the prefabricated segments 1 of each arch ring and the prefabricated segments 3 of each abdominal arch are permanently connected by w...

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Abstract

The invention discloses a structuring and constructing method for a segment prefabricated spliced concrete arch bridge. The method comprises the following steps: dividing an arch ring into a pluralityof wedged segments according to an arch ring curved line of a bridge for horizontal prefabrication and breaking up the whole into parts; connecting the arch ring prefabricated segments by adopting preburied steel hinges; in a hoisting and lifting process, forming curved line arch rings automatically and placing the same on an arch seat; after the arch rings are spliced in position, connecting thearch ring prefabricated segments in a manner of welding preburied steel plates permanently; hoisting soffit prefabricated segments symmetrically; and connecting the soffit prefabricated segments in amanner of welding preburied steel plates permanently. By means of the segment prefabricating splicing method, the arch bridge is quickly constructed, convenient to construct, reliable to connect, clear in structural stress, simple in operating process and high in safety degree. A template and a bracket are not arranged on site, the field construction speed is high, and the method meets the industrial theory of green construction, and is an advanced and reliable prefabricated concrete arch bridge construction design.

Description

technical field [0001] The invention belongs to the field of bridge engineering, and relates to bridge industrial design and construction technology, in particular to a structure and construction method of a segmental prefabricated assembled concrete arch bridge. Background technique [0002] At present, the construction of small and medium-span concrete arch bridges generally adopts arch frame cast-in-situ, cable tower buckle-hung cantilever construction and other technologies. These methods generally have problems such as large support investment, large construction interference, and long construction period. In order to realize the industrialized manufacturing and rapid assembly of arch bridges, it is necessary to develop a new technology to reduce the construction time and environmental interference on the bridge site, ensure convenient construction, and make the concrete arch bridge basically meet the technical standards of integral cast-in-place. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D4/00E01D21/00
CPCE01D4/00E01D21/00
Inventor 卓赛扬王立峰
Owner NORTHEAST FORESTRY UNIVERSITY
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