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Pre-bending laminated wood-concrete composite beam construction equipment

A construction equipment and glulam technology, applied in bridge construction, bridges, joists, etc., can solve the problems of stress concentration at the height of steel beam arches, fatigue damage, and lack of literature reports in the construction of glulam-concrete composite beams.

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

AI Technical Summary

Problems solved by technology

Generally, the arch of the curved steel beam is upward, and this reaction force is concentrated at the arch height of the curved steel beam. Concentration and Fatigue Injuries
[0004] At present, there is no literature report on the construction of glulam-concrete composite beams in China.

Method used

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  • Pre-bending laminated wood-concrete composite beam construction equipment
  • Pre-bending laminated wood-concrete composite beam construction equipment
  • Pre-bending laminated wood-concrete composite beam construction equipment

Examples

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Embodiment Construction

[0025] The following is attached figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 with Figure 8 The structure and working process of the present invention are described in detail.

[0026] A pre-bent glulam-concrete composite beam construction equipment includes a support frame for fixing a curved glulam beam. The support frame is connected by an upper support frame 4 and a lower support frame 6 through bolts 5 . Before the upper support frame is installed with the lower support frame, it is necessary to select a site with a larger area according to the design span of the composite beam, and to reinforce the foundation and drive in anchor piles, and fix the four fulcrums of the lower support frame to the foundation through anchor bolts superior. A tool anchor 1 is set on the top of the upper support frame, and several steel strands 7 for passing through the bending beam are arranged between the upper support frame and the lower support fr...

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Abstract

The invention discloses pre-bent laminated wood-concrete composite beam construction equipment which comprises a supporting frame used for fixing a bent laminated wood beam, the supporting frame is formed by connecting an upper supporting frame body and a lower supporting frame body through bolts, and a tool anchor is arranged at the top of the upper supporting frame body. A plurality of steel strands used for penetrating through the bent beam are arranged between the upper supporting frame and the lower supporting frame, two extrusion heads are arranged at one end of each steel strand, the other end of each steel strand penetrates through the tool anchor to be fixed to the tool anchor, and a counter-force device is arranged at the top of the tool anchor and the top of the upper supportingframe. During construction, holes are evenly drilled in the center line of the bent laminated wood beam, the bent laminated wood beam is fixed between the upper supporting frame and the lower supporting frame in the mode that the arch faces downwards, a steel strand penetrates through each drilled hole, extrusion heads penetrate through the steel strands at the two ends of each drilled hole, andthe steel strands are fixed to the bent laminated wood. Then, the steel strand is pulled to the tool anchor and fixed to the tool anchor, a counter-force device is arranged between the tool anchor andthe top of the upper supporting frame, counter-force is applied, and construction of the novel pre-bent laminated wood and concrete composite beam can be smoothly conducted.

Description

technical field [0001] The invention belongs to the technical field of construction and bridge engineering, and in particular relates to ancillary equipment suitable for the construction of pre-bent glued wood-concrete composite beams in this field. Background technique [0002] Pre-bent composite beams are patented by S.A.Preflex in Belgium. This technology has been widely used in civil engineering projects such as bridges, housing construction, and subways in Japan, Europe, and the United States. Japan has formed large-scale mass production. Compared with foreign countries, my country’s The research and application of pre-bent composite beams are relatively lagging behind. The pre-bending composite beam uses the curved I-shaped section steel beam as the prestressing tool. The steel beam is flattened by applying the pre-bending force through the reaction frame and the first-stage concrete is poured. After the pre-bending force is removed, the rebound of the steel beam is use...

Claims

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Application Information

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