A kind of wood-uhpc composite box girder and preparation method thereof

A combination box and beam technology, applied in bridges, manufacturing tools, bridge parts, etc., can solve the problems that limit the application and development of wood-concrete composite beam bridges, and achieve shrinkage and creep reduction, light weight, and high overall rigidity Effect

Active Publication Date: 2021-07-23
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These factors limit the application and development of wood-concrete composite girder bridges

Method used

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  • A kind of wood-uhpc composite box girder and preparation method thereof
  • A kind of wood-uhpc composite box girder and preparation method thereof
  • A kind of wood-uhpc composite box girder and preparation method thereof

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] see Figure 1-5 , wood-UHPC composite box girder bridge structure, which is a single-box three-chamber box girder, including a UHPC top plate 1, four glulam webs 3, three glulam bottom plates 2, and glulam beams set at the fulcrums at both ends of the beam body 4. The glulam web 3 , the glulam beam 4 and the glulam bottom plate 2 all include a number of wood boards superimposed on each other.

[0032] The upper surface of the glued wood web 3 is connected to the lower surface of the UHPC top plate 1, and the glued wood bottom plate 2 is arranged between the lower ends of two adjacent glued wood webs 3; the UHPC top plate 1 is parallel to the glued wood bottom plate 2.

[0033]The glulam beam 4 is located at the fulcrum of the wood-UHPC composite box girder, and the glulam beam 4 is filled between two adjacent glulam webs 3 .

[0034] The glulam botto...

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Abstract

The patent of the present invention discloses a wood-UHPC composite box girder, including a UHPC top plate, a glulam web, a glulam bottom plate and a glulam beam arranged at the fulcrum position of the beam body, a glulam bottom plate, a glulam beam and a glulam The web is connected by transverse prestressed steel bars, and the glulam web and the UHPC roof are connected by shear connectors. The invention also relates to a preparation method of the composite box girder. The invention has the advantages of reasonable structural design, light weight, high rigidity, integral prefabrication, convenient transportation and installation, good hoisting stability, etc., and solves the problem of limited span of ordinary wood-concrete composite beams due to low rigidity, which meets the requirements of bridges in my country. To meet the needs of green transformation and development, it has a good application prospect in bridge engineering.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a wood-UHPC (Ultra-High Performance Concrete, Ultra-High Performance Concrete) composite box girder and a preparation method thereof. Background technique [0002] As of the end of 2018, in my country's highway bridge system, the number of small and medium-span bridges accounted for nearly 90%, and a considerable number were distributed on low-grade highways. Most of these bridges are built with steel and concrete materials, and the problems of high energy consumption and high pollution are very prominent during the construction process; after the service period expires, they cannot be recycled and become construction waste. These problems seriously restrict the sustainable development of my country's national economy. With the progress of the society and the development of the economy, the traditional concept of environmental protection and civil engineering facilitie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B23/04B28B1/14B28B11/24E01D2/04E01D19/00E01D101/24
CPCB28B1/14B28B11/245B28B23/04E01D2/04E01D19/00E01D2101/24
Inventor 王皓磊李昊刘晓阳孙韬唐宸
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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