CN103276815A - Screw hole enhanced type large-span glued wood column beam U-shaped connecting structure - Google Patents

Screw hole enhanced type large-span glued wood column beam U-shaped connecting structure Download PDF

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Publication number
CN103276815A
CN103276815A CN2013101770907A CN201310177090A CN103276815A CN 103276815 A CN103276815 A CN 103276815A CN 2013101770907 A CN2013101770907 A CN 2013101770907A CN 201310177090 A CN201310177090 A CN 201310177090A CN 103276815 A CN103276815 A CN 103276815A
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China
Prior art keywords
gummed
pin
gfrp
shaped
glued wood
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CN2013101770907A
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CN103276815B (en
Inventor
雷英
刘伟庆
徐德良
周盯
陆伟东
岳孔
马贵进
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Nanjing Tech University
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Nanjing Tech University
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Abstract

A screw hole enhanced type large-span glued wood column beam U-shaped connecting structure comprises a metal connecting piece (1), wherein the metal connecting piece (1) consists of a bottom plate and a U-shaped slot, the bottom plate is in contact with one side of a glued wood column and is connected with another bottom plate on the other side surface of the glued wood column through a bolt, then the metal connecting piece (1) is fixed on the glued wood column (2), the end part of the glued wood beam (3) is inserted into the U-shaped slot, and the U-shaped slot is connected with the glued wood beam (3) through a connecting bolt, and the screw hole enhanced type large-span glued wood column beam U-shaped connecting structure is characterized in that a GFRP (glass fiber reinforced plastic) pipe (6) is glued in a through hole for penetrating the connecting bolt at; GFRP reinforced pipes (6) are cemented in holes of the connecting bolts of the node areas on the laminated wood columns. The invention can improve the bearing capacity, reduce the concentrated distribution of stress, change the failure mode of the connecting node, and is beneficial to reducing the size of the connecting structure and the construction cost.

Description

Screw enhancement mode large span gummed pin beam U-shaped syndeton
Technical field
The present invention relates to a kind of building structure, especially a kind of syndeton of gluing together the pin beam, specifically a kind of screw enhancement mode large span gummed pin beam U-shaped syndeton.
Background technology
At present, domestic to the existing certain research of laminated wood bolt node, fiber reinforcement beam (post), the former dowel of fiber reinforcement fourth of the twelve Earthly Branches node, but for the experimental study of the fiber reinforcement laminated wood bolt connected node announcement that do not appear in the newspapers.Domestic theoretical research for the fiber reinforcement laminated wood bolt connected node announcement that do not appear in the newspapers.Be applied in large span, the large-sized modern wood structure system research that reduces size, weight and the optimal design etc. of the structural element announcement that do not appear in the newspapers both at home and abroad for fiber reinforcement laminated wood bolt connected node.Therefore, design and a kind ofly can effectively reduce connection dimension, the beam column syndeton that strengthens supporting capacity is very important.
Summary of the invention
The objective of the invention is to improve the anisotropy of contact area timber, the concentrated distribution that alleviates node region stress, the fragility cleavage fracture pattern that changes node, raising supporting capacity, guarantee that safety, saving material reduce cost.Specific as follows described.Existing laminated wood beam column connector is connected with laminated wood, node region stress is concentrated significantly, make to be subjected to the laminated wood beam column frame under the load action that destruction of a node at first takes place laminated wood beam column frame supporting capacity forfeiture when the supporting capacity of structural member (as beam) is not given full play to.The size of conventional syndeton is bigger than normal, and then it is bigger than normal to cause the unjointed beam column dimension to be selected, and causes waste of raw materials.The present invention designs a kind of screw enhancement mode large span gummed pin beam syndeton, improve the fragility cleavage fracture pattern of the anisotropy of contact area timber, the concentrated distribution that alleviates node region stress, change node, reduce the overall dimensions of syndeton simultaneously, and then at the cross sectional dimensions that guarantees significantly to reduce under the reliable prerequisite of structural safety beam column, reduce construction costs.
Technical scheme of the present invention is:
A kind of screw enhancement mode large span gummed pin beam U-shaped syndeton, it comprises metal connecting piece 1, metal connecting piece 1 is made up of base plate and U-shaped slot, described base plate contacts with the one side of gummed pin and glues together on the pin 2 with metal connecting piece 1 being fixed on after another base plate on the gummed pin another side links to each other by bolt, insert in the described U-shaped slot end of described gummed wooden frame 3, link to each other by connecting bolt between U-shaped slot and the gummed wooden frame 3, it is characterized in that there is GFRP reinforced pipe 6 described gummed wooden frame 3 ends for the through hole splicing that installs connecting bolt; On the gummed pin in the hole of connecting bolt of node region gluing GFRP reinforced pipe 6 is arranged.
The GFRP reinforcement plate 5 that equal glued size matches on contacted two sides of the end of described gummed wooden frame 3 and U-shaped socket sidewalls; Four face gluings of node region have GFRP reinforcement plate 5 on the gummed pin.
The thickness of described GFRP reinforcement plate 5 is 1.2-2.8mm, by two to four layers of 800g/m 2-120 0g/m 2The four-axial glass fiber forms by laminated being solidified into of vinylite, planar isotropism.
Described GFRP reinforced pipe 6 thickness are 1.2-2.8mm, by two to four layers of 800g/m 2-1200g/m 2The four-axial glass fiber forms by laminated being solidified into of vinylite, vertically isotropism.
Beneficial effect of the present invention:
The present invention can improve the anisotropy of contact area timber, the concentrated distribution that slows down stress;
1. the present invention changes over the cleavage fracture of the failure mode-timber of the brittle fracture of connected node the bearing failure of ductile failure mode-keyhole;
2. the present invention is conducive to improve the supporting capacity of laminated wood bolt connected node;
3. the present invention can reduce the end distance of connected node, middle distance is the size of connector;
4. the present invention can reduce sectional dimension and the deadweight of supporting member;
5. the present invention can embody the seismic design theory (or requirement) of strong shear capacity and weak bending capacity, the strong strong anchoring of node;
6. the present invention can reduce cost and construction cost (20000 yuan/m of large scale glue laminated wood member market price 3).
7. the present invention provides reliable connection for the Load Transfer of striding qlue timber structurer greatly, for structural safety is reliably laid a good foundation.It not only can be used for enhancing and the reinforcing of traditional old wooden construction, also can be used for the lifting of the structural performance of wood structures.
Description of drawings
Fig. 1 is post beam (back timber) the syndeton schematic diagram that adopts the U-shaped connector.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is best one of the syndeton schematic diagram that strengthens of laminated wood beam end that matches with Fig. 1.
Fig. 4 is best two of the syndeton schematic diagram that strengthens of laminated wood beam end that matches with Fig. 1.
Fig. 5 is the application schematic diagram of syndeton in the T shape structure of intermediate layer of the embodiment of the invention.
Fig. 6 is the application schematic diagram in the syndeton decussate texture of the embodiment of the invention.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment one.
As Figure 1-3.
A kind of screw enhancement mode large span gummed pin beam U-shaped syndeton, it comprises metal connecting piece 1, metal connecting piece 1 is formed syndeton by base plate and U-shaped slot, as Fig. 4, shown in 5, described base plate is fixed on the gummed pin 2 by the base plate on bolt and the post another side, to be base plate with the one side of gummed pin contact and glue together on the pin 2 with metal connecting piece 1 being fixed on after another base plate on the gummed pin another side links to each other by bolt, insert in the described U-shaped slot end of described gummed wooden frame 3, link to each other by connecting bolt between U-shaped slot and the gummed wooden frame 3, the through hole that is used for installing connecting bolt in gummed wooden frame 3 ends glueds joint GFRP reinforced pipe 6 (when specifically implementing also available CFRP reinforced pipe replace the GFRP reinforced pipe).The hole gluing of gluing together the connecting bolt of the node region that is used for the installation metal connecting piece on the pin 2 has GFRP reinforced pipe 6.The thickness of described GFRP reinforced pipe 6 is 1.2-2.8mm, can be by two to four layers of 800g/m 2-1200 g/m 2The four-axial glass fiber forms by laminated being solidified into of vinylite, isotropism planar, and through actual measurement, its modulus of elasticity is 8730MPa.Test specimen is integral one-step molding under atmospheric pressure, guarantees the no delamination of bonding fully between panel and the core.
Fig. 1 is the application of enhancing structure on back timber of present embodiment, and the enhancing structure of present embodiment also can be used for T font post girder construction shown in Figure 5 and cross section column girder construction shown in Figure 6.
Structure also can be used for T font post girder construction shown in Figure 5 and cross section column girder construction shown in Figure 6.
Embodiment two.
Shown in Fig. 1,2,4.
A kind of screw enhancement mode large span gummed pin beam U-shaped syndeton, it comprises metal connecting piece 1, metal connecting piece 1 is formed syndeton by base plate and U-shaped slot, as Fig. 4, shown in 5, described base plate is fixed on the gummed pin 2 by the base plate on bolt and the post another side, to be base plate with the one side of gummed pin contact and glue together on the pin 2 with metal connecting piece 1 being fixed on after another base plate on the gummed pin another side links to each other by bolt, insert in the described U-shaped slot end of described gummed wooden frame 3, link to each other by connecting bolt between U-shaped slot and the gummed wooden frame 3, the through hole that is used for installing connecting bolt in gummed wooden frame 3 ends glueds joint GFRP reinforced pipe 6 (when specifically implementing also available CFRP reinforced pipe replace the GFRP reinforced pipe).On the gummed pin 2 in the hole of connecting bolt of the node region of fixing metal connector 1 gluing GFRP reinforced pipe 6 is arranged.In order to promote the bulk strength of syndeton, GFRP reinforcement plate 5 that also can equal glued size matches on the end of described gummed wooden frame 3 and contacted two sides of U-shaped socket sidewalls during concrete enforcement (but when specifically implementing also CFRP reinforcement plate replace the GFRP reinforcement plate), as shown in Figure 4.Four face gluings of the node region of fixing metal connector 1 have GFRP reinforcement plate 5 on the gummed pin.The thickness of GFRP reinforcement plate 5 is 1.2-2.8mm, can be by two to four layers of 800g/m 2-1200g/m 2The four-axial glass fiber forms by laminated being solidified into of vinylite, isotropism planar, and through actual measurement, its modulus of elasticity is 8730MPa.Test specimen is integral one-step molding under atmospheric pressure, guarantees the no delamination of bonding fully between panel and the core.Described GFRP reinforced pipe 6(thickness can be 1.2-2.8mm) manufacture method and material identical with GFRP reinforcement plate 5, difference is shape.
Fig. 1 is the application of enhancing structure on back timber of present embodiment, and the enhancing structure of present embodiment also can be used for T font post girder construction shown in Figure 5 and cross section column girder construction shown in Figure 6.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.

Claims (4)

1. a screw enhancement mode large span is glued together pin beam U-shaped syndeton, it comprises metal connecting piece (1), metal connecting piece (1) is made up of base plate and U-shaped slot, described base plate contact with the one side of gummed pin and by bolt with after another base plate on the gummed pin another side links to each other with metal connecting piece (1), be fixed on the gummed pin (2), insert in the described U-shaped slot end of described gummed wooden frame (3), link to each other by connecting bolt between U-shaped slot and the gummed wooden frame (3), it is characterized in that there is GFRP reinforced pipe (6) described gummed wooden frame (3) end for the through hole splicing that installs connecting bolt; On the gummed pin in the hole of connecting bolt of node region gluing GFRP reinforced pipe (6) is arranged.
2. screw enhancement mode large span according to claim 1 gummed pin beam U-shaped syndeton is characterized in that the GFRP reinforcement plate (5) that equal glued size matches on the end of described gummed wooden frame (3) and contacted two sides of U-shaped socket sidewalls; Four face gluings of node region have GFRP reinforcement plate (5) on the gummed pin.
3. screw enhancement mode large span according to claim 2 is glued together pin beam U-shaped syndeton, and the thickness that it is characterized in that described GFRP reinforcement plate (5) is 1.2-2.8mm, by two to four layers of 800g/m 2-120 0g/m 2The four-axial glass fiber forms by laminated being solidified into of vinylite, planar isotropism.
4. contact surface enhancement mode large span gummed pin beam syndeton according to claim 1 is characterized in that described GFRP reinforced pipe (6) thickness is 1.2-2.8mm, by two to four layers of 800g/m 2-1200g/m 2The four-axial glass fiber forms by laminated being solidified into of vinylite, vertically isotropism.
CN201310177090.7A 2013-05-14 2013-05-14 Screw hole enhanced type large-span glued wood column beam U-shaped connecting structure Expired - Fee Related CN103276815B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104532960A (en) * 2014-12-26 2015-04-22 南京工业大学 Dot-matrix cross-grain enhanced wood structure mortise and tenon joint

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02171441A (en) * 1988-12-24 1990-07-03 Mitsui Constr Co Ltd Beam structure for building
JP2001107460A (en) * 1999-10-05 2001-04-17 Kazuto Osu Metal fitting for construction
CN203296179U (en) * 2013-05-14 2013-11-20 南京工业大学 Screw hole enhanced type large-span glued wood column beam U-shaped connecting structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02171441A (en) * 1988-12-24 1990-07-03 Mitsui Constr Co Ltd Beam structure for building
JP2001107460A (en) * 1999-10-05 2001-04-17 Kazuto Osu Metal fitting for construction
CN203296179U (en) * 2013-05-14 2013-11-20 南京工业大学 Screw hole enhanced type large-span glued wood column beam U-shaped connecting structure

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
叶列平,冯鹏: "FRP 在工程结构中的应用与发展", 《土木工程学报》 *
叶鼎锉: "玻璃纤维多轴向布", 《玻璃纤维》 *
庄荣忠,杨勇新: "FRP加固木结构的研究和应用现状", 《四川建筑科学研究》 *
敬登虎: "纤维增强复合材料约束下圆形混凝土柱应力-应变全曲线简化模型", 《建筑科学》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104532960A (en) * 2014-12-26 2015-04-22 南京工业大学 Dot-matrix cross-grain enhanced wood structure mortise and tenon joint

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Inventor after: Lei Ying

Inventor after: Liu Weiqing

Inventor after: Xu Deliang

Inventor after: Zhou Ding

Inventor after: Lu Weidong

Inventor after: Yue Kong

Inventor after: Ma Guijin

Inventor before: Lei Ying

Inventor before: Liu Weiqing

Inventor before: Xu Deliang

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Inventor before: Lu Weidong

Inventor before: Yue Kong

Inventor before: Ma Guijin

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Termination date: 20180514