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Construction equipment for pre-bent glulam-concrete composite beams

A construction equipment and glulam technology, applied in bridge construction, girders, bridges, etc., can solve problems such as 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: 2022-02-08
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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  • Construction equipment for pre-bent glulam-concrete composite beams
  • Construction equipment for pre-bent glulam-concrete composite beams
  • Construction equipment for pre-bent glulam-concrete composite beams

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Embodiment Construction

[0025] The following is attached figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and 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 a pre-bent glulam-concrete composite beam construction equipment, which includes a support frame for fixing the curved glulam beam, the support frame is connected by an upper support frame and a lower support frame through bolts, and a tool anchor is arranged on the top of the upper support frame. Between the upper support frame and the lower support frame, several steel strands for passing through the bending beam are arranged, one end of the steel strands is provided with two extruding heads, and the other end of the steel strands passes through the tool anchor and is fixed on the tool anchor On the tool anchor and the top of the upper support frame, a counter force device is set. During construction, holes are evenly drilled at the center line of the curved glulam beam, and the curved glulam beam is fixed between the upper support frame and the lower support frame with the arch facing down, and a steel bar is passed through each hole. Strands, the steel strands at both ends of the drilled hole are threaded with extrusion heads, the steel strands are fixed on the bent glulam, and then the steel strands are pulled towards the tool anchor and fixed on the tool anchor, the tool anchor There is a reaction force device between the top of the upper support frame, and the reaction force can be applied to smoothly carry out the construction of the new pre-bent glulam-concrete composite beam.

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 Patents(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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