CN110241972A - A kind of novel fabricated laminated wood-light gauge cold-formed steel shape combination beam and production method - Google Patents
A kind of novel fabricated laminated wood-light gauge cold-formed steel shape combination beam and production method Download PDFInfo
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- CN110241972A CN110241972A CN201910396356.4A CN201910396356A CN110241972A CN 110241972 A CN110241972 A CN 110241972A CN 201910396356 A CN201910396356 A CN 201910396356A CN 110241972 A CN110241972 A CN 110241972A
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- laminated wood
- steel
- cold
- combination beam
- flute profile
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/292—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being wood and metal
Abstract
The present invention relates to a kind of novel fabricated laminated wood-light gauge cold-formed steel shape combination beam and production methods.The present invention discloses a kind of novel fabricated laminated wood-light gauge cold-formed steel shape combination beam and production method.The combination beam includes: that two identical cold-formed thin-walled C steels are welded into i shaped cross section girder steel (1) back-to-back or are welded into box-type section girder steel (7) face-to-face, described two C-type steel beams top flange is connected with upper flute profile laminated wood protective layer (2) by epoxy resin viscose coating (4) and shearing bolt connector (5), described two C-type steel lower flange of girder edge are connected with lower part flute profile laminated wood protective layer (3) also through epoxy resin viscose coating and shearing bolt connector, layer protective layer (3) is symmetric form on the laminated wood, it is connected by special-shaped shear connector (6) and epoxy resin viscose coating (4).This novel fabricated laminated wood-shaped steel combination girder construction realizes steel and the very effective combination of timber.
Description
Technical field:
The invention belongs to structural engineering technical fields, more particularly to a kind of novel fabricated laminated wood-cold bending thin wall
Shaped steel combination beam and production method.
Background technique:
China's building structure at present mostly uses greatly the traditional building materials such as steel, cement, yield occupied the whole world 50% with
On.Since production cement will generate excessive greenhouse gases, it will aggravate warming for Global Temperature, while can also generate and build
Building refuse, the serious sustainable development for restricting Chinese society economy.As the growth of expected population is opposite with urban modernization
The progress of sustainability, building field are badly in need of reform and innovation.Timber has light weight shock resistance as renewable construction material
Good, environmentally protective advantage, can not only reduce the discharge amount of greenhouse gases, but also visual impact is big.But domestic wood
Material scarcity of resources, needs a large amount of imports, and the defect of itself prevents mechanical property from giving full play to.Steel constructions are sexual simultaneously
Can stabilization, high-strength light, plasticity and good toughness, assembling degree height, short construction period, building waste is few, environmental pollution is small etc.
Plurality of advantages, but there are stability problems.In view of the above-mentioned problems, both materials can be combined, pass through shear connections
Part connection combination forms a kind of novel fabricated laminated wood-light gauge cold-formed steel shape combination beam.Laminated wood-light gauge cold-formed steel shape group
Beam is closed after bearing external load, laminated wood surface layer can be effectively prevented light gauge cold-formed steel shape and buckling occurs, and make light gauge cold-formed steel shape
The edge of a wing can reach yield strength before buckling occurs, and the high-intensity performance of steel be given full play to, so that laminated wood-is cold
Curved light-gauge steel section combination beam bearing capacity is greatly improved compared with clean steel component stability bearing capacity, improves the utilization rate of material.
In recent years, extensive concern of the research in terms of steel-wood composite structure by domestic and foreign scholars, comes from present Research
It sees, domestic scholar, which has carried out steel and wood composite beam, compares in-depth study, and research object includes glued cable wire net-wood combination
Beam, steel plate-clark beam, reinforcing bar-clark beam, deformed bar-clark beam, the wooden edge of a wing-shaped steel combination beam, Steel Thin-Wall-
Combine bamboo compoboard, outsourcing wood a tree, used in making timber for boats, steel-wood compound rod etc. and accordingly on combination connecting mode, and carried out correlative study.
Consulting literatures have at present obtained just the research of steel-clark beam composite behaviour by the advantage in curved load-carrying properties
Step card, related steel-gluing clark beam ultimate shear capacity aspect research are very few.
Through retrieving Chinese patent authorization Publication No.: CN 108824698A: denomination of invention: a kind of built-in light-gauge steel section wood
The production method of combination beam.This practical invention provide the novel steel and wood composite form of one kind, it can be achieved that steel wood efficient combination,
The more superior steel and wood composite beams of performances such as bearing capacity, rigidity and durability are formed, and are conducive to steel in steel and wood composite structure
The industrialized production of clark beam, standardized construction[2].But the invention plank only uses gluing and spiral shell between shape steel web
It tethers and connects, i.e., shape steel web is wrapped up by plank, is only had booster action to the stability of web first, but not can be effectively controlled the wing
Distribute raw bending deformation in edge；Next to be arranged in its lug wire of foil gauge at section steel flange surface and web come it is imperial walk
It affects to component performance；The exposure of the steel sections edge of a wing is easy to corrode in air, if things go on like this can
Influence the bearing capacity of composite structure；The comparatively laborious production efficiency of invention assembling process is low；Cold-formed thin-walled C steel and thin-walled H-type
Steel is bigger compared to intensity, hardness.Based on this, the present invention is welded two groove profile gluing wooden frames and two using shearing bolt connector
The cold-formed thin-walled C steel edge of a wing is connect to be fastenedly connected in conjunction with forming a kind of novel laminated wood-shaped steel combination beam.
Summary of the invention:
Based on above-mentioned technical background, the present invention propose a kind of novel fabricated laminated wood-light gauge cold-formed steel shape combination beam and
Production method.
Foregoing invention is achieved through the following technical solutions.A kind of novel fabricated laminated wood-light gauge cold-formed steel shape combination beam,
It include: 1. two identical cold-formed thin-walled C steels welded back-to-back by its composition shown in attached drawing 1；2. upper layer flute profile laminated wood
Protective layer；3. lower layer's flute profile laminated wood protective layer；4. epoxy resin viscose coating；5. shearing bolt connector；6. abnormity connection
Part；It include: 7. two identical cold-formed thin-walled C steels welded face-to-face by its composition shown in attached drawing 2；2. upper layer flute profile is glued
The wooden protective layer；3. lower layer's flute profile laminated wood protective layer；4. epoxy resin viscose coating；5. shearing bolt connector；6. abnormity is anti-
Slip joint.
: above-mentioned novel fabricated laminated wood-light gauge cold-formed steel shape combination beam, main body are two identical cold bending thin wall C
The i shaped cross section girder steel (1) that fashioned iron is welded back-to-back or the box-type section girder steel (7) that two are welded face-to-face；
The upper layer flute profile laminated wood protective layer (2) and i shaped cross section girder steel (1) top flange outer surface or box-type section girder steel
(7) top flange outer surface is connected by epoxy resin viscose coating (4) with shearing bolt connector (5)；Lower layer's flute profile
Laminated wood protective layer (3) and i shaped cross section girder steel (1) lower flange outer surface or box-type section girder steel (7) lower flange outer surface
It is connected by epoxy resin viscose coating (4) with shearing bolt connector (5)；The upper layer flute profile laminated wood protective layer (2) and
C-type steel beam is welded in lower layer's flute profile laminated wood protective layer (3) outsourcing, and passes through epoxy resin viscose coating (4) and special-shaped antiskid
Shifting connector (6), which is connected, becomes an integral structural component.
This technical solution has following beneficial effect.
Using two light gauge cold-formed steel shapes that are back-to-back or being welded face-to-face, due to the processing of C-type steel and H profile steel
The difference of technique, so that intensity is higher from heavy and light, section utilization rate is high, i.e., at same section, the bearing capacity of C-type steel is bright
Aobvious meeting is higher than H profile steel.Dead load can reduce again in this way, more alleviate the effect of earthquake, and then reduce structural internal force.
The laminated wood surface layer of upper and lower two flute profiles is fully wrapped around together by fashioned iron, and passes through epoxy resin viscose coating
Be connected the erosion for preventing fashioned iron by rainwater, air etc. with special-shaped resistant slide connector, so that the durability of combination beam improves.
Laminated wood protective layer in a new manner for fashioned iron provide can the advantageous edge of a wing and lateral support, while increasing the wing
The thickness and width of edge guarantees that fashioned iron reaches yield strength before buckling occurs and prevents lateral bending, effectively prevent
Buckling occurs for light gauge cold-formed steel shape, the high-intensity performance of steel is given full play to, so that the overall stability of combination beam improves.
Novel steel and wood composite beam meets Green Development theory, and cold formed steel structure belongs to green building structure, distributed body
System, it is possible to reduce intimate 50% traditional energy consumption is environmental protection and energy saving product, meets the strategy of sustainable development.
Laminated wood is connect with section steel flange surface by shearing bolt connector in the present invention, and the hole on section steel flange surface
Hole need to be equipped with screw thread, so that can more combine closely between steel and wood composite.
Specific implementation method
Embodiment 1:
In order to realize these purposes and other advantages according to the present invention, it is thin to provide a kind of novel fabricated laminated wood-clod wash
The production method of wall-shaped steel combination beam, the following steps are included:
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
By the requirement for bearing capacity of laminated wood shaped steel combination beam, the cold-formed thin-walled C steel edge of a wing, web, laminated wood protection are drafted
Layer size, resists each parameter such as intensity, then according to size require to make respectively two essentially equal cold-formed thin-walled C steels and
Flute profile glued wood, the laminated wood raw material can be the economic timber such as pinus sylvestris var. mongolica, fir or larch.
According to timber structure specification and norm of steel structure, select appropriate shearing bolt connector (cross self-tapping screw), and
Determine the end of default screw hole away from, back gauge and in away from end to meet detailing requiments, is avoided end is torn away from too small, in away from and side
Away from too small, component net section weaken it is excessive, or in away from back gauge is excessive causes to rouse Qu Xianxiang.In this example, beam length 2m,
Screw hole end is 70mm away from 65mm, pitch of bolts 110mm, bolt line-spacing, and bolt back gauge is 40mm.
Network arrangement figure, setting laminated wood and fashioned iron concentric holes are drawn, wherein laminated wood aperture diameter is slightly less than screw diameter,
Fashioned iron diameter is equal to screw diameter, and the screw hole surface of cold-formed thin-walled C steel flange surfaces setting will be at screw thread.
After being completed component shown in attached drawing, guarantee gap and the C-type steel flange surfaces of laminated wood flange surfaces
Gap alignment, combination beam or so is first held with cross self-tapping screw fix, and complete that this operates with is multi-functional double speed pistol
It bores.Complete the left back both ends in lower flange on combination beam it is fixed after, then with power drill remaining screw is fixed on the composite structure wing
Edge, selected screw diameter is 8mm and the effective length of screw will be longer than laminated wood and section steel flange thickness summation, this reality
In example, screw length 35mm.
The examples of the embodiments show place in the accompanying drawings, wherein equal label indicates identical element from beginning to end.It is complete
At the production of assembled laminated wood-light gauge cold-formed steel shape combination beam.
Comparative examples 1 successively change fashioned iron flange width, web height, web thickness, beam shear span ratio, loading type, spiral shell
The variables such as silk spacing assemble combination beam according to example 1, finally carry out the test of bending resistance and shear-carrying capacity respectively.
Course of work description:
The novel laminated wood of above-mentioned assembled-light gauge cold-formed steel shape combination beam can be used in the structures such as house bridge, to knot
Configuration formula and the number of plies are not particularly limited, easy construction, but have following applicable elements: guaranteeing laminated wood and clod wash in the design
Light-gauge steel section, which precisely coincide, to be then fastenedly connected with cross tapping screw, so that it is existing to be not susceptible to removing when bearing external force load
As.And when fashioned iron bearing capacity is relatively low, the laminated wood of outside package will inwardly or outwardly be bloated from center, can be added in this way
According to combination beam deformation velocity.If selected laminated wood and cold bending thin wall C fashioned iron performance parameter will match each other, guarantee that its is whole
The stable work of body, that is, work according to his ability, and when bearing extraneous load action, laminated wood will advantageously prevent the light gauge cold-formed steel shape wing
The lateral bending of the bending deformation and web of edge, and laminated wood and shaped steel combination be from heavy and light, bearing capacity is more in the same circumstances
It is high.To guarantee that its Bend bearing capacity is sufficiently large when verifying the shear-carrying capacity of combination beam simultaneously, that is, shearing resistance occur
Bending resistance destruction cannot occur before destruction.
Novel fabricated laminated wood-light gauge cold-formed steel shape combines beam action: compared with pure timber structure beam and girder steel, no matter
Bending resistance shear behavior or stability all significantly improve.It is environmentally protective compared with steel reinforced concrete, more social benefit.
Fig. 1 is the overall structure diagram of novel fabricated laminated wood-light gauge cold-formed steel shape combination beam of the present invention.
Fig. 2 be novel fabricated laminated wood-light gauge cold-formed steel shape combination beam of the present invention cross-sectional view (C-type steel is back-to-back
Welding and the face-to-face welding manner of C-type steel).
Fig. 3 is the schematic diagram of main components of novel fabricated laminated wood-light gauge cold-formed steel shape combination beam of the present invention.
Claims (8)
1. a kind of novel fabricated laminated wood-light gauge cold-formed steel shape combination beam, it is characterised in that: two identical cold bending thin wall C
The i shaped cross section girder steel or the box-type section girder steel being welded face-to-face that fashioned iron is welded back-to-back, two complete phases
Deng flute profile gluing wooden frame form laminated wood surface layer, described two cold-formed thin-walled C steel beams top flange and upper and lower flute profile laminated wood
Protective layer is connected by epoxy resin viscose with shearing bolt connector, two essentially equal flute profile gluing wooden frames up and down
It is connected by special-shaped shear connector with epoxy resin viscose.
2. a kind of production method of novel fabricated laminated wood-shaped steel combination beam, which comprises the following steps:
Step 1: the size and intensity of cold-formed thin-walled C steel and laminated wood plate are determined according to requirement for bearing capacity；
Step 2: the quantity of shearing resistance coupling bolt connector and position needed for being determined according to Shear Strength of Reinforced Concrete Members；
Step 3: two cold-formed thin-walled C steels of welding are at i shaped cross section or box-type section；
Step 4: epoxy resin viscose is uniformly painted on to the flange surfaces up and down of two cold-formed thin-walled C steel beams；Brushing thickness
For 2mm-3mm；
Step 5: after epoxy resin viscose initial set, according to calculating position on two essentially equal flute profile gluing wooden frame surfaces
It is coupled laminated wood surface layer and cold-formed thin-walled C steel beam with electric drill hole knockout installation shearing resistance coupling bolt；
Step 6: the uniform brushwork epoxy resin viscose of contact surface between two essentially equal flute profile gluing wooden frames, to glue
After body initial set, the position that special-shaped shear connector fixes two essentially equal flute profile gluing wooden frames is installed, places two completely
It is slid between equal flute profile gluing wooden frame contact surface.After epoxy resin viscose is fully cured, that is, complete the novel assembly
The production of formula laminated wood-shaped steel combination beam.
3. novel laminated wood-shaped steel combination girder construction according to claim 1, it is characterised in that: two cold bending thin wall c-types
Steel can be considered skeleton, and flute profile laminated wood surface layer is fully wrapped around by its as protective layer.
4. a kind of novel fabricated laminated wood-shaped steel combination beam according to claim 1, it is characterised in that: the slot
Concentric holes are arranged in lower flange and two cold-formed thin-walled C steel flange of beam surfaces on shape gluing timber layer surface layer, wherein glued wooden frame table
The diameter of layer flange surfaces is small in shearing resistance coupling bolt connector diameter, the diameter and shearing resistance coupling bolt on section steel flange surface
Connector diameter is identical.
5. the novel laminated wood shaped steel combination girder construction of one kind according to claim 1, it is characterised in that: the shearing resistance
Coupling bolt connector can choose cross self-tapping screw.
6. a kind of production method of novel fabricated laminated wood-shaped steel combination beam as claimed in claim 2, it is characterised in that:
The hole of the setting of cold-formed thin-walled C steel flange surfaces need to have screw thread, so that laminated wood preferably tightens together with fashioned iron.
7. a kind of production method of novel fabricated laminated wood-shaped steel combination beam as claimed in claim 2, it is characterised in that:
The cold-formed thin-walled C steel preferably uses yield strength 345Mp or more, thickness 2mm high intensity thinner tube cold-rolled forming section below.
8. a kind of production method of novel fabricated laminated wood-shaped steel combination beam as claimed in claim 2, it is characterised in that:
Laminated wood surface layer plank needs to be not less than using the shearing resistance and tensile strength that use glue-line by the gluing of timber bulk strength
Wood plank.
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| CN201910396356.4A CN110241972A (en) | 2019-05-14 | 2019-05-14 | A kind of novel fabricated laminated wood-light gauge cold-formed steel shape combination beam and production method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110626471A (en) * | 2019-11-04 | 2019-12-31 | 张广基 | Combined keel and surfboard resisting bending and twisting composite deformation |
| CN111350306A (en) * | 2020-03-10 | 2020-06-30 | 天津大学 | Steel-wood combined component for contour plate framework |
| CN112982134A (en) * | 2021-03-10 | 2021-06-18 | 姚帅 | Combined steel beam used in bridge construction |
| CN113463837A (en) * | 2020-03-31 | 2021-10-01 | 中国地质大学（北京） | Combined rectangular beam and manufacturing method thereof |
| CN114016666A (en) * | 2021-09-28 | 2022-02-08 | 中国建材国际工程集团有限公司 | Construction method of assembled light steel-wood composite beam |
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