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CN106182223B - Over-bending correction forming method for variable-section arc-shaped laminated wood member - Google Patents

Over-bending correction forming method for variable-section arc-shaped laminated wood member Download PDF

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Publication number
CN106182223B
CN106182223B CN201610814244.2A CN201610814244A CN106182223B CN 106182223 B CN106182223 B CN 106182223B CN 201610814244 A CN201610814244 A CN 201610814244A CN 106182223 B CN106182223 B CN 106182223B
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section
glulam
variable
laminated wood
variable cross
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CN106182223A (en
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岳孔
刘伟庆
陆伟东
程秀才
贾翀
汤丽娟
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Nanjing Tech University
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Nanjing Tech University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

本发明公开了变截面弧形胶合木构件过弯矫正成型方法，属于胶合木制备领域。其步骤包括木质层板定长、胶粘剂涂布、木质层板靠模造型、加压定型和构件深加工五个工序；根据木质层板数量和变截面弧形胶合木构件的设计曲率半径，确定变截面弧形胶合木构件的制备曲率半径确保变截面弧形胶合木构件外型；通过设定分布式压机最小加压间距确保胶合木构件胶合质量。本发明根据木质层板数量及胶合木构件的设计曲率半径，并设定分布式压机最小加压间距，解决了仅依靠经验确定变截面弧形胶合木构件制造曲率半径和多点加压时的最小加压间距，避免了传统无法预测变截面弧形型胶合木构件胶压成型后的形状回弹，保证了变截面胶合木的胶合质量。

The invention discloses a bending correction and forming method for a variable-section arc-shaped glulam component, which belongs to the field of glulam preparation. The steps include five processes: wood laminate length, adhesive coating, wood laminate moulding, pressure shaping and component deep processing; according to the number of wood laminates and the design radius of curvature of the variable cross-section curved glulam components, determine the change. The radius of curvature of the preparation of the arc-shaped glulam components ensures the appearance of the variable-section arc-shaped glulam components; the gluing quality of the glulam components is ensured by setting the minimum pressure spacing of the distributed press. According to the number of wood laminates and the design radius of curvature of the glued wood components, the invention sets the minimum pressure spacing of the distributed press, and solves the problem when only relying on experience to determine the radius of curvature of the curved glued wood components with variable cross-section and multi-point pressure. The minimum pressure spacing avoids the traditional unpredictable shape rebound of the variable-section arc-shaped glulam components after gluing molding, and ensures the gluing quality of the variable-section glulam.

Description

The excessively curved correction forming method of variable cross-section arc glue laminated wood member
Technical field
This patent is related to laminated wood preparation, more particularly to the excessively curved correction forming method of variable cross-section arc glue laminated wood member.
Background technique
It is laminated structure material environmental protection and energy saving, renewable compared with steel construction；It is glued compared with reinforced concrete structure For timber structure in addition to having with other than material environmental protection and energy saving, primary structural member can also realize that construction site is quick by prefabrication Assembly can be avoided situ wet operation；Compared with traditional log timberstructure, glue laminated wood member is by wood finger joint spreading, cross It being formed to wide, thickness superposition gluing is spelled, it is smaller that component forms unit size, therefore can design and be processed into arbitrary shape, and Size is unrestricted.
It is glued after needing to remove in view of glued pressure but currently, in the processing of variable cross-section arc glue laminated wood member The problem of wooden component deviates design conditions due to the resilience bring member profile of shape.In general, variable cross-section arc is glued The degree and creep of wood performance, density of wood, wooden number of laminae, arc glue laminated wood member curvature half of the wooden Components Shape rebound The parameters such as diameter, glue laminated wood member processing environment condition are related.In addition, being used as the variable cross-section arc laminated wood structure of building structural member Part, the more general woodwork for decorations of size is much greater, and therefore, preparation method is different from conventional ground The timber products such as plate, furniture.Variable cross-section arc glue laminated wood member is generally prepared using distributed pressure method, long in component Degree is along its laminate Direction of superposition many areas exerted pressure on, to ensure the reliability of bonding quality between laminate.
But following deficiency is primarily present in existing variable cross-section arc glue laminated wood member preparation method:
Due to the degree and creep of wood performance, wooden number of laminae, change of the rebound of variable cross-section arc glue laminated wood member shape It is related that section arc glue laminated wood member designs the parameters such as radius of curvature.Moisture content is bigger, and timber plastic deformation is bigger, and rebound degree It is smaller；When sectional dimension of members determines, wooden number of laminae is more, smaller per plate thickness layer by layer, and component plastic deformation is bigger, instead Bullet degree is smaller；Component radius of curvature is smaller, and component rebound degree is bigger.Therefore pass through empirically determined arc glue laminated wood member system Standby required radius of curvature, often after component preparation, the rebound degree of component can not be predicted or be accurately calculated, arc component shape Error is larger, is unfavorable for guaranteeing element mechanics performance, and bring the problems such as can not normally assembling during construction and installation.Simultaneously The preparation method of variable cross-section arc glue laminated wood member is different from traditional production method of decorations woodwork, straight with routine The production method of line style glue laminated wood member is also different, when determining many areas exerted pressure on pressure on variable cross-section arc glue laminated wood member inner arc After power and spacing, due to the shape of variable cross-section arc glue laminated wood member, corresponding outer arc many areas exerted pressure on pressure and spacing are often It can reduce, increase, the bonding quality when component outer arc many areas exerted pressure on spacing increases, and pressure reduction is to limit value, between component laminate It can not just be effectively ensured, bring the insecure serious consequence of glue laminated wood member quality.
Summary of the invention
1. technical problems to be solved by the inivention
Existing problems are formed for the excessively curved correction of variable cross-section arc glue laminated wood member in the prior art, the present invention is public Opened the excessively curved correction moulding process of variable cross-section arc glue laminated wood member, this method the basic moisture content for determining timber it is gentle do it is close Under conditions of degree, it is contemplated that two parameters of wooden number of laminae and non-uniform member radius of curvature, to determine variable cross-section arc Outer arc pressurization spacing and pressure value in radius of curvature needed for prepared by shape glue laminated wood member and many areas exerted pressure on, solve conventional only rely on Empirically determined variable cross-section arc glue laminated wood member preparation radius of curvature and many areas exerted pressure on pressure arrangement technology, are effectively guaranteed The shape and bonding quality of arc glue laminated wood member.
2. technical solution
The excessively curved correction forming method of variable cross-section arc glue laminated wood member, it is characterised in that: including wooden laminate fixed length, gluing Agent coating, wooden laminate pattern moulding, pressurization sizing and five processes of component deep processing；
For moisture content and air-dry density respectively in 8%~12% and 0.45~0.60g/cm3Timber in range, according to Wooden number of laminae and variable cross-section arc glue laminated wood member design radius of curvature determine the preparation of variable cross-section arc glue laminated wood member Radius of curvature, the preparation radius of curvature of variable cross-section arc glue laminated wood member are as follows:
Variable cross-section arc glue laminated wood member designs radius of curvature × (the wooden number of laminae of 1-1/)
Preferably, the coating of the wooden laminate fixed length, adhesive, wooden laminate pattern moulding, pressurization sizing and component Five processes of deep processing, be 18 DEG C of temperature or more, relative humidity 60~85% in favor of glue laminated wood member adhesive It is completed under cured environmental condition.
Preferably, the wooden laminate gluing is that single spreading amount is no less than 250g/m2, to guarantee to have between wooden laminate Enough bonding strengths；The glue laminated time is no less than 4h, to guarantee that component inside adhesive sufficiently solidifies.
Preferably, pressurization sizing each point pressurization spacing in distributed pressure method is not more than rigid backing plate length Half, and pressurize shaping process in, the application of each point pressure follows most thick from variable cross-section arc glue laminated wood member section Place is respectively along component length direction toward the asynchronous pressurization in both ends；And the average value of the pressure applied on each cemented surface 1.0~ Within the scope of 1.5MPa.
The present invention designs radius of curvature according to wooden number of laminae and variable cross-section arc glue laminated wood member, determines variable cross-section arc The preparation radius of curvature and outer arc many areas exerted pressure on pressure and spacing of shape glue laminated wood member pass through the side for the pre-compensation that is resiliently deformed Formula, shape is accurate for preparation, the reliable variable cross-section arc glue laminated wood member of bonding quality.
3. beneficial effect
The present invention designs radius of curvature according to wooden number of laminae and variable cross-section arc glue laminated wood member, passes through resilience The mode of compensation, it is determined that many areas exerted pressure on pressure in the preparation radius of curvature of arc glue laminated wood member and its outer arc cemented surface Arrangement technology has filled up the blank of shape determination in existing variable cross-section arc glue laminated wood member processing technology of preparing, pressure arrangement, It preferably ensure that the shape and bonding quality of arc glue laminated wood member.
Pass through wooden laminate fixed length, adhesive coating, wooden laminate pattern moulding, pressurization sizing and component deep processing five Process is arranged at and works under 18 DEG C of temperature or more, relative humidity 60~85%, and it is solid with adhesive to be conducive to glue laminated wood member Change.
The influence that the present invention rebounds to processed variable cross-section arc glue laminated wood member shape by considering timber elastoplasticity, leads to The determination for crossing the closely related parameter of two timber elastoplasticity of moisture content and air-dry density, it is opposite to establish timber elastoplasticity Under controlled condition, variable cross-section arc glue laminated wood member manufacture radius of curvature designs the pass of radius of curvature and wooden number of laminae with it System, by making variable cross-section arc glue laminated wood member first generate an overbending in the preparation, which is variable cross-section arc The amount that shape rebounds after pressure removes in the preparation of shape glue laminated wood member, so that after variable cross-section arc glue laminated wood member preparation structure, It is rebounded, is reached and the consistent purpose of variable cross-section arc glue laminated wood member design shape by shape.
By the way that in variable cross-section arc glue laminated wood member pressurization shaping process, the application of each point pressure is followed from variable cross-section arc Shape glue laminated wood member section thickness eliminates wooden laminate respectively along component length direction toward the mode of the asynchronous pressurization in both ends In bending moulding, as between wooden laminate mutually close to when can not internal stress caused by Free Transform, be conducive to variable cross-section arc The guarantee of glue laminated wood member shape and its bonding quality.
Therefore, the present invention can satisfy moisture content in 8%~12%, airdried wood density in 0.45~0.60g/ cm3In range when variation, reaches and prepare radius of curvature needed for variable cross-section arc glue laminated wood member design radius of curvature.Meanwhile this The technology is invented, the form error of prepared variable cross-section arc glue laminated wood member fully meets domestic and international all kinds of standard criterions Requirement and regulation.
Technology of the present invention, the form error and its glue performance of prepared arc glue laminated wood member fully meet state The requirement and regulation of inside and outside all kinds of standard criterions.
Detailed description of the invention
Fig. 1 prepares schematic diagram for variable cross-section arc glue laminated wood member.
1- variable cross-section arc glue laminated wood member designs radius of curvature, and 2- variable cross-section arc glue laminated wood member designs circular arc boundary line (glue laminated wood member within boundary line is arc, is in addition linear type), 3- arc glue laminated wood member prepare radius of curvature, 4- wood Matter laminate, the rigid backing plate in 5- distribution pressure method, along component arc method when prepared by 6- variable cross-section arc glue laminated wood member The pressure that line direction applies, spacing of pressurizeing in 7- distribution pressure method, each point pressure covers model in 8- distribution pressure method It encloses.
Fig. 2 is variable cross-section arc glue laminated wood member deep processing schematic diagram.
2- variable cross-section arc glue laminated wood member designs circular arc boundary line, and (glue laminated wood member within boundary line is arc, in addition For linear type), the wooden laminate of 4-, 9- variable cross-section arc glue laminated wood member deep processing path.
Fig. 3 is the variable cross-section arc glue laminated wood member schematic diagram that preparation finishes.
1- variable cross-section arc glue laminated wood member designs radius of curvature, the wooden laminate of 4-.
Specific embodiment
Below in conjunction with embodiment, invention is further described in detail.
Embodiment 1:
The excessively curved correction forming method of variable cross-section arc glue laminated wood member, including wooden laminate fixed length, adhesive are coated with, are wooden Laminate conserves five processes by modeling, pressurization sizing and release, and five processes are temperature is 18 DEG C, relative humidity is It is completed under 60% environmental condition.
It is respectively 8% and 0.45g/cm for moisture content and air-dry density3Timber, variable cross-section arc glue laminated wood member sets Meter radius of curvature is 5500mm, the span of circular arc is 3.0m, variable cross-section arc glue laminated wood member section thickness with a thickness of 350mm, the number of laminae in section thickness are 9 layers, every thickness degree 38.8mm, by way of resilience compensation, it is determined that The preparation radius of curvature of variable cross-section arc glue laminated wood member are as follows:
The preparation radius of curvature of variable cross-section arc glue laminated wood member=variable cross-section arc glue laminated wood member designs radius of curvature × (the wooden number of laminae of 1-1/)=5500 × (1-1/9)=4888mm
Wherein wooden laminate fixed length, be according to the thickness in variable cross-section arc glue laminated wood member section thickness with it is used wooden The thickness of laminate determines the quantity of wooden laminate, then passes through the shape of variable cross-section arc glue laminated wood member, completes every piece used The determination of wooden laminate length.
Wherein wooden laminate gluing is single spreading amount 250g/m2, the glue laminated time is 4.0h, to guarantee wooden laminate and wood Glue-line between matter laminate is full, and has enough bonding qualities, and the quantity of wooden laminate 3 is 9 layers.
Wherein wooden laminate pattern moulding is according to calculated result, by required each wooden laminate of layer according to the sequence after fixed length After stacking, all wooden laminate mutual extrusions are close to by pressure mode, and form manufacture shape.
As shown in Figure 1, variable cross-section arc glue laminated wood member radius of curvature 1 is designed radius of curvature, variable cross-section arc glue The glue laminated wood member within wooden component design circular arc boundary line 2 is closed to be segmental arc, be in addition straightway, arc glue laminated wood member song Rate radius 3 is prepared radius of curvature, and 6 be that variable cross-section arc glue laminated wood member applies when preparing along component circular arc normal direction Pressure, wherein pressurization spacing 7 is 0.5 times of the length 8 of rigid backing plate 5 in distributed pressure method in distributed pressure method, Meanwhile in variable cross-section arc glue laminated wood member pressurization shaping process, the application of each point pressure follows glued from variable cross-section arc The wooden member section thickness is respectively along component length direction toward the mode of the asynchronous pressurization in both ends, and the pressure applied on each cemented surface The average value of power is 1.5MPa.
As shown in Fig. 2, the variable cross-section arc glue laminated wood member prepared by the above method, along variable cross-section arc laminated wood structure Part deep processing path 9 carries out deep processing, obtains the variable cross-section arc glue laminated wood member that preparation finishes, as shown in Figure 3.Pass through survey Examination, the arch camber error of prepared variable cross-section arc glue laminated wood member are -4.77mm, and bonding strength is greater than 8.0MPa, wood-breaking rate Higher than 90%, form error and glue performance fully meet the requirement and regulation of domestic and international all kinds of standard criterions.
Embodiment 2:
The excessively curved correction forming method of variable cross-section arc glue laminated wood member, step are both embodiment 1, including wooden laminate is determined Length, adhesive coating, wooden laminate pattern moulding, pressurization sizing and release conserve five processes, and five processes are in temperature It is completed under the environmental condition for being 65% for 28 DEG C, relative humidity.
It is respectively 10% and 0.50g/cm for moisture content and air-dry density3Timber, variable cross-section arc glue laminated wood member Design radius of curvature is 4000mm, the span of circular arc is 4.0m, the thickness in variable cross-section arc glue laminated wood member section thickness For 400mm, the number of laminae in section thickness is 11 layers, every thickness degree 36.3mm, by way of resilience compensation, is determined The preparation radius of curvature of variable cross-section arc glue laminated wood member are as follows:
The preparation radius of curvature of variable cross-section arc glue laminated wood member=variable cross-section arc glue laminated wood member designs radius of curvature × (the wooden number of laminae of 1-1/)=4000 × (1-1/11)=3636mm
The wooden laminate gluing is single spreading amount 260g/m2, glue laminated time 4.5h, the quantity of wooden laminate 3 is 11 Layer, as shown in Figure 1, variable cross-section arc glue laminated wood member radius of curvature 1 is designed radius of curvature, variable cross-section arc laminated wood structure Glue laminated wood member within part design circular arc boundary line 2 is segmental arc, is in addition straightway, arc glue laminated wood member radius of curvature 3 be prepared radius of curvature, and 6 be the pressure applied when prepared by variable cross-section arc glue laminated wood member along component circular arc normal direction, Wherein pressurization spacing 7 is 0.1 times of the length 8 of rigid backing plate 5 in distributed pressure method in distributed pressure method, meanwhile, In variable cross-section arc glue laminated wood member pressurization shaping process, the application of each point pressure is followed from variable cross-section arc glue laminated wood member Section thickness is respectively along component length direction toward the mode of the asynchronous pressurization in both ends, and the pressure applied on each cemented surface is flat Mean value is 1.3MPa.
As shown in Fig. 2, the variable cross-section arc glue laminated wood member prepared by the above method, along variable cross-section arc laminated wood structure Part deep processing path 9 carries out deep processing, obtains the variable cross-section arc glue laminated wood member that preparation finishes, as shown in Figure 3.Pass through survey Examination, the arch camber error of prepared variable cross-section arc glue laminated wood member are -3.69mm, and bonding strength is greater than 8.0MPa, wood-breaking rate Higher than 90%, form error and glue performance fully meet the requirement and regulation of domestic and international all kinds of standard criterions.
Embodiment 3:
The excessively curved correction forming method of variable cross-section arc glue laminated wood member, step are both embodiment 1, including wooden laminate is determined Length, adhesive coating, wooden laminate pattern moulding, pressurization sizing and release conserve five processes, and five processes are in temperature It is completed under the environmental condition for being 85% for 25 DEG C, relative humidity.
It is respectively 12% and 0.60g/cm for moisture content and air-dry density3Timber, variable cross-section arc glue laminated wood member Design radius of curvature is 6000mm, the span of circular arc is 5.8m, the thickness in variable cross-section arc glue laminated wood member section thickness For 600mm, the number of laminae in section thickness is 17 layers, every thickness degree 35.2mm, by way of resilience compensation, is determined The preparation radius of curvature of variable cross-section arc glue laminated wood member are as follows:
The preparation radius of curvature of variable cross-section arc glue laminated wood member=variable cross-section arc glue laminated wood member designs radius of curvature × (the wooden number of laminae of 1-1/)=6000 × (1-1/17)=5647mm
The wooden laminate gluing is single spreading amount 350g/m2, glue laminated time 6.0h, the quantity of wooden laminate 3 is 17 Layer, as shown in Figure 1, variable cross-section arc glue laminated wood member radius of curvature 1 is designed radius of curvature, variable cross-section arc laminated wood structure Glue laminated wood member within part design circular arc boundary line 2 is segmental arc, is in addition straightway, arc glue laminated wood member radius of curvature 3 be prepared radius of curvature, and 6 be the pressure applied when prepared by variable cross-section arc glue laminated wood member along component circular arc normal direction, Wherein pressurization spacing 7 is 0.4 times of the length 8 of rigid backing plate 5 in distributed pressure method in distributed pressure method, meanwhile, In variable cross-section arc glue laminated wood member pressurization shaping process, the application of each point pressure is followed from variable cross-section arc glue laminated wood member Section thickness is respectively along component length direction toward the mode of the asynchronous pressurization in both ends, and the pressure applied on each cemented surface is flat Mean value is 1.2MPa.
As shown in Fig. 2, the variable cross-section arc glue laminated wood member prepared by the above method, along variable cross-section arc laminated wood structure Part deep processing path 9 carries out deep processing, obtains the variable cross-section arc glue laminated wood member that preparation finishes, as shown in Figure 3.Pass through survey Examination, the arch camber error of prepared variable cross-section arc glue laminated wood member are+5.11mm, and bonding strength is greater than 8.0MPa, wood-breaking rate Higher than 90%, form error and glue performance fully meet the requirement and regulation of domestic and international all kinds of standard criterions.
Embodiment 4:
The excessively curved correction forming method of variable cross-section arc glue laminated wood member, step are both embodiment 1, including wooden laminate is determined Length, adhesive coating, wooden laminate pattern moulding, pressurization sizing and release conserve five processes, and five processes are in temperature It is completed under the environmental condition for being 75% for 22 DEG C, relative humidity.
It is respectively 10% and 0.55g/cm for moisture content and air-dry density3Timber, variable cross-section arc glue laminated wood member Design radius of curvature is 6500mm, the span of circular arc is 8.0m, the thickness in variable cross-section arc glue laminated wood member section thickness For 880mm, the number of laminae in section thickness is 25 layers, every thickness degree 35.2mm, by way of resilience compensation, is determined The preparation radius of curvature of variable cross-section arc glue laminated wood member are as follows:
The preparation radius of curvature of variable cross-section arc glue laminated wood member=variable cross-section arc glue laminated wood member designs radius of curvature × (the wooden number of laminae of 1-1/)=6500 × (1-1/25)=6240mm
The wooden laminate gluing is single spreading amount 300g/m2, glue laminated time 5.0h, the quantity of wooden laminate 3 is 25 Layer, as shown in Figure 1, variable cross-section arc glue laminated wood member radius of curvature 1 is designed radius of curvature, variable cross-section arc laminated wood structure Glue laminated wood member within part design circular arc boundary line 2 is segmental arc, is in addition straightway, arc glue laminated wood member radius of curvature 3 be prepared radius of curvature, and 6 be the pressure applied when prepared by variable cross-section arc glue laminated wood member along component circular arc normal direction, Wherein pressurization spacing 7 is 0.3 times of the length 8 of rigid backing plate 5 in distributed pressure method in distributed pressure method, meanwhile, In variable cross-section arc glue laminated wood member pressurization shaping process, the application of each point pressure is followed from variable cross-section arc glue laminated wood member Section thickness is respectively along component length direction toward the mode of the asynchronous pressurization in both ends, and the pressure applied on each cemented surface is flat Mean value is 1.4MPa.
As shown in Fig. 2, the variable cross-section arc glue laminated wood member prepared by the above method, along variable cross-section arc laminated wood structure Part deep processing path 9 carries out deep processing, obtains the variable cross-section arc glue laminated wood member that preparation finishes, as shown in Figure 3.Pass through survey Examination, the arch camber error of prepared variable cross-section arc glue laminated wood member are+5.51mm, and bonding strength is greater than 8.0MPa, wood-breaking rate Higher than 90%, form error and glue performance fully meet the requirement and regulation of domestic and international all kinds of standard criterions.
Embodiment 5:
The excessively curved correction forming method of variable cross-section arc glue laminated wood member, step are both embodiment 1, including wooden laminate is determined Length, adhesive coating, wooden laminate pattern moulding, pressurization sizing and release conserve five processes, and five processes are in temperature It is completed under the environmental condition for being 70% for 20 DEG C, relative humidity.
It is respectively 9% and 0.48g/cm for moisture content and air-dry density3Timber, variable cross-section arc glue laminated wood member sets Meter radius of curvature is 5500mm, the span of circular arc is 3.0m, variable cross-section arc glue laminated wood member section thickness with a thickness of 350mm, the number of laminae in section thickness are 9 layers, every thickness degree 38.8mm, by way of resilience compensation, it is determined that The preparation radius of curvature of variable cross-section arc glue laminated wood member are as follows:
The preparation radius of curvature of variable cross-section arc glue laminated wood member=variable cross-section arc glue laminated wood member designs radius of curvature × (the wooden number of laminae of 1-1/)=5500 × (1-1/9)=4888mm
The wooden laminate gluing is single spreading amount 320g/m2, glue laminated time 5.5h, the quantity of wooden laminate 3 is 9 Layer, as shown in Figure 1, variable cross-section arc glue laminated wood member radius of curvature 1 is designed radius of curvature, variable cross-section arc laminated wood structure Glue laminated wood member within part design circular arc boundary line 2 is segmental arc, is in addition straightway, arc glue laminated wood member radius of curvature 3 be prepared radius of curvature, and 6 be the pressure applied when prepared by variable cross-section arc glue laminated wood member along component circular arc normal direction, Wherein pressurization spacing 7 is 0.2 times of the length 8 of rigid backing plate 5 in distributed pressure method in distributed pressure method, meanwhile, In variable cross-section arc glue laminated wood member pressurization shaping process, the application of each point pressure is followed from variable cross-section arc glue laminated wood member Section thickness is respectively along component length direction toward the mode of the asynchronous pressurization in both ends, and the pressure applied on each cemented surface is flat Mean value is 1.25MPa.
As shown in Fig. 2, the variable cross-section arc glue laminated wood member prepared by the above method, along variable cross-section arc laminated wood structure Part deep processing path 9 carries out deep processing, obtains the variable cross-section arc glue laminated wood member that preparation finishes, as shown in Figure 3.Pass through survey Examination, the arch camber error of prepared variable cross-section arc glue laminated wood member are -4.77mm, and bonding strength is greater than 8.0MPa, wood-breaking rate Higher than 90%, form error and glue performance fully meet the requirement and regulation of domestic and international all kinds of standard criterions.
Embodiment 6:
The excessively curved correction forming method of variable cross-section arc glue laminated wood member, including wooden laminate fixed length, adhesive are coated with, are wooden Laminate conserves five processes by modeling, pressurization sizing and release, and five processes are in 21 DEG C of temperature, relative humidity 80% Environmental condition under complete.
It is respectively 11% and 0.52g/cm for moisture content and air-dry density3Timber, variable cross-section arc glue laminated wood member Design radius of curvature is 6800mm, the span of circular arc is 3.0m, the thickness in variable cross-section arc glue laminated wood member section thickness For 480mm, the number of laminae in section thickness is 13 layers, every thickness degree 36.9mm, by way of resilience compensation, is determined The preparation radius of curvature of variable cross-section arc glue laminated wood member are as follows:
The preparation radius of curvature of variable cross-section arc glue laminated wood member=variable cross-section arc glue laminated wood member designs radius of curvature × (the wooden number of laminae of 1-1/)=6800 × (1-1/13)=6276mm
The wooden laminate gluing is single spreading amount 280g/m2, glue laminated time 4.5h, the quantity of wooden laminate 3 is 13 Layer, as shown in Figure 1, variable cross-section arc glue laminated wood member radius of curvature 1 is designed radius of curvature, variable cross-section arc laminated wood structure Glue laminated wood member within part design circular arc boundary line 2 is segmental arc, is in addition straightway, arc glue laminated wood member radius of curvature 3 be prepared radius of curvature, and 6 be the pressure applied when prepared by variable cross-section arc glue laminated wood member along component circular arc normal direction, It is 0 that wherein pressurization spacing 7, which is the length 8 of rigid backing plate 5 in distributed pressure method, in distributed pressure method, meanwhile, becoming Section arc glue laminated wood member pressurizes in shaping process, and the application of each point pressure is followed from variable cross-section arc glue laminated wood member section Thickness is respectively along component length direction toward the mode of the asynchronous pressurization in both ends, and the average value of the pressure applied on each cemented surface For 1.0MPa.
As shown in Fig. 2, the variable cross-section arc glue laminated wood member prepared by the above method, along variable cross-section arc laminated wood structure Part deep processing path 9 carries out deep processing, obtains the variable cross-section arc glue laminated wood member that preparation finishes, as shown in Figure 3.Pass through survey Examination, the arch camber error of prepared variable cross-section arc glue laminated wood member are+3.19mm, and bonding strength is greater than 8.0MPa, wood-breaking rate Higher than 90%, form error and glue performance fully meet the requirement and regulation of domestic and international all kinds of standard criterions.

Claims (7)

1.变截面弧形胶合木构件过弯矫正成型方法，其特征在于：其步骤包括木质层板定长、胶粘剂涂布、木质层板靠模造型、加压定型和构件深加工；1. the bending correction molding method for variable cross-section arc-shaped glulam components, is characterized in that: its steps comprise the lengthening of wooden laminates, adhesive coating, the molding of wooden laminates, pressure setting and deep processing of components; 对含水率和气干密度分别在8%~12%和0.45~0.60g/cm3范围内的木材，根据木质层板数量及变截面弧形胶合木构件设计曲率半径确定变截面弧形胶合木构件的制备曲率半径，变截面弧形胶合木构件的制备曲率半径为：For wood whose moisture content and air-dry density are in the range of 8%~12% and 0.45~0.60g/ cm3 , respectively, the variable-section curved glulam components are determined according to the number of wood laminates and the design curvature radius of the variable-section curved glulam components. The preparation radius of curvature of the variable-section curved glulam components is: 变截面弧形胶合木构件设计曲率半径×（1-1/木质层板数量），所述的木质层板数量为截面最厚处的层板数量，所述木质层板定长、胶粘剂涂布、木质层板靠模造型、加压定型和构件深加工五个工序，均是在温度在18℃以上、相对湿度在60~85%范围内的环境条件下完成。The design radius of curvature of the variable-section curved glulam component × (1-1/number of wood laminates), the number of wood laminates is the number of laminates at the thickest part of the section, and the wood laminates are fixed to length and coated with adhesive. , The five processes of wood laminate molding, pressure setting and deep processing of components are all completed under the environmental conditions of temperature above 18 ℃ and relative humidity in the range of 60~85%. 2.根据权利要求1所述的变截面弧形胶合木构件过弯矫正成型方法，其特征在于：所述木质层板定长根据变截面弧形胶合木构件截面最厚处进行层板数量拆分计算，并通过层板数量和变截面弧形胶合木构件外型尺寸确定各层层板长度。2. The method for correcting and forming by bending of a variable-section arc-shaped glulam member according to claim 1, characterized in that: the fixed length of the wooden laminate is carried out according to the number of laminates at the thickest part of the variable-section arc-shaped glulam member cross-section. The length of each layer of laminate is determined by the number of laminates and the external dimensions of the variable-section curved glulam components. 3.根据权利要求1所述的变截面弧形胶合木构件过弯矫正成型方法，其特征在于：所述胶粘剂涂布为木质层板单面涂胶，涂胶量不少于250g/m2，以保证木质层板间有足够的胶合强度。3. The method for bending and correcting the curved glulam member according to claim 1, wherein the adhesive is coated as a single-sided gluing of a wooden laminate, and the gluing amount is not less than 250g/m 2 , in order to ensure sufficient bonding strength between wood laminates. 4.根据权利要求1所述的变截面弧形胶合木构件过弯矫正成型工方法，其特征在于：所述加压定型中胶压时间不少于4h，以保证构件内部胶粘剂充分固化。4. The method for bending and rectifying a curved glulam component of variable cross-section according to claim 1, characterized in that: the glue pressing time in the pressing and shaping is not less than 4 hours, so as to ensure that the adhesive inside the component is fully cured. 5.根据权利要求1所述的变截面弧形胶合木构件过弯矫正成型方法，其特征在于：所述加压定型在分布式加压方法中各点加压间距不大于刚性垫板长度的二分之一，且加压定型工序中，各点压力的施加遵循从变截面弧形胶合木构件截面最厚处分别沿构件长度方向往两端非同步加压的方式；且各胶合面上施加的压力的平均值在1.0~1.5MPa范围内。5. The bending correction and forming method for a variable-section curved glulam component according to claim 1, wherein the pressure-setting distance is not greater than the length of the rigid backing plate in the pressure-setting method in the distributed pressure-setting method. One half, and in the pressure setting process, the application of pressure at each point follows the method of asynchronous pressure from the thickest part of the section of the variable-section arc-shaped glulam member along the length direction of the member to both ends; and each glued surface The average value of the applied pressure is in the range of 1.0 to 1.5 MPa. 6.根据权利要求1所述的变截面弧形胶合木构件过弯矫正成型方法，其特征在于：所述构件深加工是在制备完成的构件上根据设计形状进行切割。6 . The bending correction and forming method for a variable-section arc-shaped glulam component according to claim 1 , wherein the deep processing of the component is to cut the prepared component according to the designed shape. 7 . 7.根据权利要求1所述的变截面弧形胶合木构件过弯矫正成型方法，其特征在于：所述木质层板定长，是根据变截面弧形胶合木构件截面最厚处的厚度与所用木质层板的厚度，确定出木质层板的数量，再通过变截面弧形胶合木构件的形状，完成所用每块木质层板长度的确定。7. The method for correcting and forming by bending of a variable-section arc-shaped glulam member according to claim 1, wherein the fixed length of the wood laminate is based on the thickness of the thickest part of the section of the variable-section arc-shaped glulam member and The thickness of the wood laminates used determines the number of wood laminates, and then determines the length of each wood laminate used by changing the shape of the arc-shaped glulam components.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104493918A (en) * 2014-12-12 2015-04-08 北京林业大学 Manufacturing method of prefabricated bending integrated materials
EP2881518A1 (en) * 2013-12-03 2015-06-10 Aaltopuu Oy Arrangement for forming arc section of right circular cylinder
CN204935825U (en) * 2015-08-25 2016-01-06 曾令东 A kind of wood sheet bends the shaping bending plank of split
CN105599096A (en) * 2016-01-21 2016-05-25 中山市大涌镇生产力促进中心 Manufacturing method of solid wood furniture bent parts

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03213308A (en) * 1990-01-18 1991-09-18 Oomori Sangyo:Kk Manufacturing device for curved plywood
JP2003251611A (en) * 2002-02-28 2003-09-09 Miyazaki Prefecture Method and apparatus for manufacturing of curved laminated wood

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2881518A1 (en) * 2013-12-03 2015-06-10 Aaltopuu Oy Arrangement for forming arc section of right circular cylinder
CN104493918A (en) * 2014-12-12 2015-04-08 北京林业大学 Manufacturing method of prefabricated bending integrated materials
CN204935825U (en) * 2015-08-25 2016-01-06 曾令东 A kind of wood sheet bends the shaping bending plank of split
CN105599096A (en) * 2016-01-21 2016-05-25 中山市大涌镇生产力促进中心 Manufacturing method of solid wood furniture bent parts

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