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Corrugated web steel wood composite beam and assembly joint

A steel-wood combination and corrugated web technology, which is applied to structural elements, building components, and elongated structural components for load-bearing, can solve problems such as loss of bearing capacity, twisting deformation, lateral torsion instability, etc. Simple and safe, good anti-twisting performance, and the effect of improving the degree of freedom

Pending Publication Date: 2020-03-27
应急管理部天津消防研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When there is a large lateral force, the steel-wood composite beam is prone to lateral displacement or twisting deformation outside its main stiffness plane, causing the beam to lose its bearing capacity at an extremely fast speed and appear lateral torsional instability, thereby limiting Application of Steel-wood Composite Beams in Multi-story Wood Structure Buildings

Method used

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  • Corrugated web steel wood composite beam and assembly joint
  • Corrugated web steel wood composite beam and assembly joint
  • Corrugated web steel wood composite beam and assembly joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 As shown, a typical steel-wood composite beam in this design is composed of a corrugated web steel beam 1, an upper plank 21, a lower plank 22 and wood screws 31, and the upper and lower planks are made of glulam. The webs 1-3 can be designed to be wavy, zigzag, trapezoidal, curved, rectangular, or zigzag. Here, a steel girder with zigzag webs is used as an example for expression.

[0041] Such as figure 2 As shown, on the upper flange 1-1 and the lower flange 1-2 of the corrugated web steel beam 1, screw holes 32 for wood screws 31 are set at a certain distance, and the four corners of the steel beam flange are set as the first high-strength The sixth bolt hole 42 that bolt is reserved. For ease of understanding, here is an example of setting a bolt hole at each corner. In actual engineering, bolt holes can be added on the upper and lower flanges according to the size of the component, the load-bearing condition and the needs of the connection betwe...

Embodiment 2

[0045] As shown in 5, the first box-shaped connector 51 includes a back plate 51-1, upper and lower top plates 51-2, and left and right side plates 51-3, and the upper and lower top plates 51-2 are provided with the first bolts reserved for the first high-strength bolts Hole 44.

[0046] Such as Image 6 with Figure 7 As shown, when two steel-wood composite beams are connected horizontally and forwardly, a first box-shaped connector 51 is installed on both sides of the web 1-3 at the joint, and the first high-strength bolt 41 is used to connect the first The box-shaped connector 51, the upper and lower flanges of the corrugated web steel girder 1, and the upper plank 21 and the lower plank 22 are connected to form a firm whole. The first back plate 51-1 and the first upper and lower top plates 51-2 of the first box-shaped connector 51 can provide better shear performance at the connection, and the left and right side plates 51-3 are similar to the stiffeners at the beam end...

Embodiment 3

[0048] Such as Figure 8 As shown, when two steel-wood composite beams are connected vertically and are connected at the ends of the two beams, a bolt hole for the first high-strength bolt 41 needs to be pre-set on one of the beams (including steel beams and upper and lower planks). In the actual engineering of multi-storey timber structures, this type of vertical connection is basically the connection between the main beam and the secondary beam, and the additional bolt holes should be set on the main beam.

[0049] Such as Figure 9 with Figure 10 As shown, the first box-shaped connector 51 conflicts with the space position of the screw head of a wood screw 31 of the beam, and a groove 52 is opened on the first box-shaped connector, so that when the first box-shaped connector 51 is assembled By avoiding the screw head of the wood screw 31 , the tight fit between the first box-shaped connector 51 and the flange of the steel beam 1 is realized.

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Abstract

The invention discloses a corrugated web steel wood composite beam and an assembly joint. The steel wood composite beam is composed of an upper wood board, a lower wood board and a corrugated web steel beam in the middle, and the wood boards and the corrugated web steel beam are connected through epoxy resin glue and wood screws arranged flanges at certain intervals. The assembly joint is a connecting joint between steel wood composite beams and between the beam and a column, and comprises box type connecting pieces and high-strength bolts, the box type connecting pieces are connected with theflanges of the steel beam through the high-strength bolts, and the wood boards are connected through high-strength bolts. Compared with an existing H-shaped steel wood composite beam, the corrugatedweb steel wood composite beam has the advantages of being large in rigidity, high in shear strength, good in side torsion resistance and good in stability; components are connected through the box type connecting pieces, a steel plate does not need to be welded to a corrugated web as a connecting plate, the freedom degree of web waveform design is improved, a pure bolt connection form also avoidsfire hazards caused by welding operation in wood structure building construction, construction is simple, convenient and safe, and the corrugated web steel wood composite beam is suitable for assembling work.

Description

technical field [0001] The invention relates to the field of construction, in particular to a corrugated web steel-wood composite beam and an assembly node. Background technique [0002] Wood is a green, environmentally friendly and beautiful renewable resource. The development of prefabricated wood structure buildings is changing with each passing day. The height and number of floors of buildings are constantly increasing. At the same time, higher requirements are put forward for the carrying capacity of wood components. Wood has good tensile and compressive properties along the grain, but poor shear resistance and is prone to brittle fracture. Steel has the advantages of high strength, light weight and good ductility. People took advantage of the performance advantages of wood and steel, two building materials, to invent a steel-wood composite beam. Problem with oversized section. However, the steel beams adopted in the existing steel-wood composite beams are I-shaped c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/292E04B1/58
CPCE04C3/292E04B1/185
Inventor 崔海浩阚强彭磊
Owner 应急管理部天津消防研究所
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