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Crossbow-method-based pre-bending laminated wood-concrete composite beam construction equipment

A kind of construction equipment and glulam technology, which is applied in bridge construction, bridges, joists, etc., and can solve the problems of late start of pre-bent composite girder bridges

Pending Publication Date: 2021-03-19
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Abstract
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  • Application Information

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Problems solved by technology

Although the research work on pre-bending composite girder bridges started late in our country, it has made rapid progress.

Method used

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  • Crossbow-method-based pre-bending laminated wood-concrete composite beam construction equipment
  • Crossbow-method-based pre-bending laminated wood-concrete composite beam construction equipment
  • Crossbow-method-based pre-bending laminated wood-concrete composite beam construction equipment

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Embodiment Construction

[0023] The following is attached figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 The structure and working process of the present invention are described in detail.

[0024] For new materials, only new production equipment can be used to complete the production of composite beams. The construction equipment consists of reaction device, tool anchor, limit plate, tension steel strand, construction platform (reaction support frame, longitudinal support beam, transverse support Beams, lateral supports, mid-span reaction supports and wooden beam stabilizers), prefabricated concrete formwork (divided into two parts, A and B), and anchor bolts. Its specific structure is described in detail as follows:

[0025] A pre-bent glulam-concrete composite beam construction equipment based on the crossbow method, including tension bolts 8 respectively arranged at both ends of the curved glulam beam 9, and a longit...

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Abstract

Pre-bending laminated wood concrete composite beam construction equipment based on crossbow method comprises tensioning bolts arranged at the two ends of a bent laminated wood beam and a longitudinalsupporting beam arranged in the middle of the bent laminated wood beam, a tool anchor is arranged at the top of the longitudinal supporting beam, and a counter-force device is further arranged betweenthe top of the longitudinal supporting beam and the tool anchor. Steel strands are fixed to the tensioning bolts at the two ends of the bent laminated wood beam, and the ends of the two steel strandspenetrate through the tool anchor to be fixed to the tool anchor in a centralized mode. During construction, tensioning bolts are installed at the two ends of the bent laminated wood beam, steel strands are fixed to the two ends of the bent laminated wood beam, one end of the longitudinal supporting beam abuts against the arch crown of the bent laminated wood beam, then the steel strands are pulled to the tool anchor and fixed to the tool anchor, and a counter-force device is arranged between the tool anchor and the top of the longitudinal supporting beam. A counter force is applied to flatten the bent laminated wood beam. First-stage concrete pouring and second-stage concrete pouring are conducted. By the adoption of the construction method, construction of the pre-bent laminated wood concrete composite beam can be conducted smoothly.

Description

technical field [0001] The invention belongs to the technical field of construction and bridge engineering, and mainly relates to supporting equipment for construction of pre-bent glulam-concrete composite beams suitable for the field, which is designed based on the design principle of crossbow method. Background technique [0002] Since the pre-bent composite beam was invented by Belgian engineer A. Lipsik in 1949, the pre-bending composite beam has the advantages of fast construction speed, light hoisting weight, and good crack and seismic performance, and has been valued by the engineering community. And other countries have been widely promoted and applied. Although the research work on pre-bending composite girder bridges started late in our country, it has made rapid progress. The pre-bending composite beam is to pre-bend the I-shaped cross-section steel beam by applying pre-bending force. After the pre-bending force is released, the elastic deformation energy of the ...

Claims

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Application Information

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IPC IPC(8): E04G21/12E04G21/02E04C5/08E04C5/12E04C3/29E01D21/00E01D19/00E01D101/10E01D101/28
CPCE04G21/12E04G21/121E04G21/02E04C5/08E04C5/125E04C3/29E01D21/00E01D19/00E01D2101/10E01D2101/28
Inventor 徐云王雪娇
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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