CN112095909A - Orthogonal laminated wood floor structure with bidirectional prestress - Google Patents
Orthogonal laminated wood floor structure with bidirectional prestress Download PDFInfo
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- CN112095909A CN112095909A CN202010893024.XA CN202010893024A CN112095909A CN 112095909 A CN112095909 A CN 112095909A CN 202010893024 A CN202010893024 A CN 202010893024A CN 112095909 A CN112095909 A CN 112095909A
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- floor
- hole
- orthogonal
- rectangular steel
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
- E04C2/12—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of solid wood
- E04C2/14—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of solid wood reinforced
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/44—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose
- E04C2/50—Self-supporting slabs specially adapted for making floors ceilings, or roofs, e.g. able to be loaded
Abstract
The invention relates to an orthogonal glued wood floor structure with bidirectional prestress, which comprises a cubic spliced floor and a plurality of anchoring connectors, wherein the side surface of the spliced floor is provided with a through hole communicated with two opposite sides, the spliced floor comprises a plurality of orthogonal glued wood floors spliced by unbonded prestressed tendons penetrating through the through hole, one end of the unbonded prestressed tendons, which is positioned outside the through hole, is anchored on the anchoring connectors through anchors, two adjacent side surfaces of the spliced floor are respectively provided with the through hole, the anchoring connectors comprise rectangular steel pipes with openings facing to the horizontal direction, the unbonded prestressed tendons penetrate through the side walls of the rectangular steel pipes, the top and the bottom of each rectangular steel pipe are respectively and symmetrically provided with 2 overhanging end plates used for being connected with a wall body or a beam, and the overhanging end plates are provided with screw holes. Compared with the prior art, the invention has the advantages of stable structure, high rigidity and the like.
Description
Technical Field
The invention relates to the technical field of wood structure buildings, in particular to an orthogonal glued wood floor structure with bidirectional prestress.
Background
The orthogonal laminated wood is a novel engineering wood product, and is regarded as an important engineering material for building a multi-story and high-rise wood structure due to the advantages of high strength and rigidity, capability of being stressed in two directions, good earthquake resistance and fire resistance and the like. Orthogonal laminated wood is commonly used to make panels such as floor slabs, wall slabs, etc., and orthogonal laminated wood floor slabs are important components in orthogonal laminated wood structures. Under the action of vertical load, the orthogonal glued wood floor directly bears the floor load and transfers the floor load downwards; under the action of lateral loads such as wind and earthquake, the orthogonal glued wood floor serves as a horizontal lateral force resisting system and plays a role in transferring and distributing floor shearing force to a vertical lateral force resisting system. The rigidity of the orthogonal laminated wood floor slab and the rigidity of connection jointly determine the mechanical property of the orthogonal laminated wood floor slab. The existing orthogonal glued wood floor slab is mostly connected by pin shafts, and because the rigidity of the pin shaft connection is low, the floor slab can generate large deflection under the action of vertical load, so that the applicability of the structure is reduced; under the action of lateral load, the floor slab is difficult to meet the requirement of a rigid floor slab, and the floor shear force cannot be effectively transmitted and distributed to a vertical lateral force resisting system.
The prior art has also provided some solutions, chinese patent CN201820456385.6 has proposed an assembled floor slab with CLT board and unbonded prestressed tendons, wrap up the steel channel through both ends, not only improved the phenomenon of compression and tension stress concentration, still make floor slab edge and service environment keep apart, the adverse effect that environmental factor brought the floor slab has been reduced, the steel pipe that runs through the board component not only the effectual influence that reduces timber creep nature and bring to unbonded prestressed tendons, the loss of unbonded prestressed stress has been reduced, still play the guard action to unbonded prestressed tendons, improve the durability of unbonded prestressed tendons.
However, the patent has the following problems:
in the patent, the unbonded prestressed tendons are all arranged in the same direction, and the rigidity in the direction is only improved;
the unbonded prestressed tendons extend out of the end parts of the CLT plates and penetrate through the steel slots, no fixing measures are taken, and the structure is unstable;
only epoxy resin glue is smeared between the two spliced CLT plates, and reinforcement treatment is not carried out, so that the structure is unstable.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the orthogonal glued wood floor structure with bidirectional prestress, which has stable structure and high rigidity.
The purpose of the invention can be realized by the following technical scheme:
an orthogonal glued wood floor structure with bidirectional prestress comprises a cube-shaped spliced floor and a plurality of anchoring connectors, wherein the side surface of the spliced floor is provided with a through hole communicated with two opposite sides, the spliced floor comprises a plurality of orthogonal glued wood floors spliced by unbonded prestressed tendons penetrating through the through hole, the end parts of the unbonded prestressed tendons, which are positioned outside the through hole, are anchored on the anchoring connectors through anchors, the two adjacent side surfaces of the spliced floor are respectively provided with the through hole, each anchoring connector comprises a rectangular steel pipe with an opening facing the horizontal direction, the unbonded prestressed tendons penetrate through the side walls of the rectangular steel pipes, the top and the bottom of each rectangular steel pipe are symmetrically provided with 2 overhanging end plates used for being connected with a wall body or a beam, the tapping overhanging end plates are provided with screw holes, and the overhanging end plates are connected with the wall body or the beam through screws penetrating through the screw holes, the spliced floor receives prestress in a vertical direction, the self rigidity of the spliced floor and the connection rigidity with a wall or a beam are improved, and the rigidity of the spliced floor under the action of vertical load and lateral load is improved.
Furthermore, the through holes are distributed on the side face of the spliced floor slab in rows, each row of through holes are arranged at intervals in the vertical direction, and the same ends of the unbonded prestressed tendons penetrating through the same row of through holes are fixed on the same anchoring connecting piece, so that the spliced floor slab is more sufficient and uniform in prestress and more stable in structure, and the through holes on the two adjacent sides are staggered in the vertical direction, and the structure is compact.
Furthermore, two adjacent blocks of orthogonal laminated wood floor slabs are connected through connecting plates, the connecting plates are rectangular steel plates, screw holes are formed in the connecting plates, the connecting plates are connected with the orthogonal laminated wood floor slabs through self-tapping screws penetrating through the screw holes, the number of the connecting plates is multiple, the overall rigidity of the spliced floor slabs is improved, and the structure is stable.
Furthermore, the stiffening ribs are vertically arranged in the rectangular steel pipes, so that the rigidity of the rectangular steel pipes is improved, the deformation generated when the rectangular steel pipes are connected with a wall body or a beam is reduced, and the structure is stable.
Furthermore, the unbonded prestressed reinforcement is a prestressed strand, a prestressed wire bundle, finish-rolled deformed steel bar or FRP reinforcement.
Furthermore, the anchorage device is a clamping piece type anchorage device, a supporting type anchorage device or a conical plug type anchorage device.
Compared with the prior art, the invention has the following beneficial effects:
(1) the through holes communicated with the two opposite sides are formed in the side faces of the cubic spliced floor slab, the through holes are formed in the two adjacent side faces of the spliced floor slab, so that the spliced floor slab receives two groups of prestress in vertical directions, the self rigidity of the spliced floor slab and the connection rigidity with a wall body or a beam are improved, the spliced floor slab is not easy to deform under the action of vertical load, the structural integrity of the spliced floor slab under the action of lateral load is improved, meanwhile, the anchoring connecting piece comprises a rectangular steel pipe and is stable in structure, an overhanging end plate is arranged on the rectangular steel pipe, the spliced floor slab is convenient to connect with the wall body or the beam, and the assembly is convenient;
(2) according to the invention, the side surface of the spliced floor slab is provided with a plurality of rows of through holes, each row of through holes are arranged at intervals along the vertical direction, and the same ends of the unbonded prestressed tendons penetrating through the same row of through holes are fixed on the same anchoring connecting piece, so that the spliced floor slab is more sufficient and uniform in prestress and more stable in structure;
(3) according to the invention, two adjacent orthogonal laminated wood floor slabs are connected through the plurality of connecting plates, the connecting plates are rectangular steel plates, the connecting plates are provided with screw holes, and the connecting plates are connected with the orthogonal laminated wood floor slabs through tapping screws penetrating through the screw holes, so that the integral rigidity of the spliced floor slabs is improved, and the structure is stable;
(4) the stiffening ribs are vertically arranged in the rectangular steel pipe, so that the rigidity of the rectangular steel pipe is improved, the deformation generated when the rectangular steel pipe is connected with a wall body or a beam is reduced, and the structure is stable.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of an orthogonal laminated wood floor slab;
FIG. 3 is a perspective view of the first anchor linkage;
FIG. 4 is a perspective view of a second anchor linkage;
FIG. 5 is a schematic perspective view of a connecting plate;
the reference numbers in the figures illustrate:
1. the concrete structure comprises a cross-glued wood floor slab, 11, a first through hole, 12, a second through hole, 13, a third through hole, 2, a first unbonded prestressed rib, 3, a second unbonded prestressed rib, 4, an anchorage device, 5, a first anchoring connecting piece, 51, a first rectangular steel pipe, 511, a first rectangular steel pipe through hole, 52, a first stiffening rib, 521, a first stiffening rib through hole, 53, a first extended end plate, 531, a screw hole reserved for the first extended end plate, 6, a second anchoring connecting piece, 61, a second rectangular steel pipe, 611, a second rectangular steel pipe through hole, 62, a second stiffening rib, 621, a second stiffening rib through hole, 63, a second extended end plate, 631, a second extended end plate screw hole, 7, a connecting plate and 71, and connecting piece screw holes.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
An orthogonal laminated wood floor structure with bidirectional prestress comprises a cubic spliced floor, a first unbonded prestressed tendon 2, a second unbonded prestressed tendon 3, a first anchoring connector 5 and a second anchoring connector 6, as shown in figures 1 and 2, wherein the spliced floor comprises 2 orthogonal laminated wood floors 1, the orthogonal laminated wood floors 1 are cuboid and are made by orthogonally gluing five layers of plates, the 2 orthogonal laminated wood floors 1 are spliced along the width direction of the uppermost layer of the plate, 2 layers of plates are drawn out from the third layer along the length direction of the orthogonal laminated wood floor 1 along the front edge of the spliced orthogonal laminated wood floor 1 to form 2 first through holes 11, 4 layers of plates are drawn out from the 2 nd layer along the width direction of the orthogonal laminated wood floor 1 to form 4 second through holes 12, 4 layers of plates are drawn out along the width direction of the orthogonal laminated wood floor 1, form 4 third through- holes 13, 4 second through-holes 12 are located 4 third through-holes 13 respectively directly over, every first through-hole 11 passes 1 first unbonded prestressing tendons 2, every second through-hole 12 and every third through-hole 13 all pass 1 second unbonded prestressing tendons 3, first unbonded prestressing tendons 2 is located the outer both ends anchor of first through-hole 11 on first anchor connecting piece 5, the both ends anchor that second unbonded prestressing tendons 3 is located second through-hole 12 and third through-hole 13 is on second anchor connecting piece 6.
As shown in fig. 3, the first anchoring connector 5 includes a first rectangular steel pipe 51, an opening of the first rectangular steel pipe 51 faces a horizontal direction, 2 side walls of the first rectangular steel pipe 51 are respectively provided with 1 first rectangular steel pipe through hole 511, 1 first stiffening rib 52 is arranged inside the first rectangular steel pipe 51, a first stiffening rib through hole 521 is formed on the first stiffening rib 52, the first unbonded tendon 2 passes through the first rectangular steel pipe through hole 511 and the first stiffening rib through hole 521, and an end of the first unbonded tendon 2 is anchored on the first rectangular steel pipe 51 by an anchorage 4. The top and the bottom of first rectangular steel pipe 51 all are equipped with 2 first overhanging end plates 53 of symmetry, and first overhanging end plate 53 is located the extension face of first rectangular steel pipe 51 lateral wall, forms the mounting groove between 2 first overhanging end plates 53, and it has first overhanging end plate to reserve screw hole 53 to open on the first overhanging end plate 53, and first overhanging end plate 53 is connected with wall body or roof beam through the self tapping screw that passes first overhanging end plate and reserve screw hole 53.
As shown in fig. 4, the second anchoring connector 6 includes a second rectangular steel pipe 61, the opening of the second rectangular steel pipe 61 faces the horizontal direction, 2 side walls of the second rectangular steel pipe 61 are respectively provided with 2 second rectangular steel pipe through holes 611, 1 second stiffening rib 62 is arranged inside the second rectangular steel pipe 61, 2 second stiffening rib through holes 621 are arranged on the second stiffening rib 62, each unbonded prestressed tendon 3 respectively passes through 1 second rectangular steel pipe through hole 611 and 1 second stiffening rib through hole 621, and the end of the unbonded prestressed tendon 3 is anchored on the second rectangular steel pipe 61 through an anchorage device 4. The bottom and the top of second rectangle steel pipe 61 all the symmetry be equipped with 2 pieces of second and stretch end plate 63 outward, and the second stretches end plate 63 outward and is located the extension face of second rectangle steel pipe 61 lateral wall, and 2 pieces of second stretches outward and forms the mounting groove between the end plate 63, and it has the second to stretch end plate screw hole 631 outward to open on the second stretches end plate 63, and the second stretches end plate 63 outward and is connected with wall body or roof beam through the self-tapping screw that passes the second and stretches end plate screw hole 631 outward.
As shown in fig. 1 and 5, 6 connecting plates 7 are uniformly arranged between 2 orthogonal laminated wood floor slabs 1 along the length direction of the orthogonal laminated wood floor slabs 1 at intervals, connecting piece screw holes 71 are formed in the connecting plates 7, and the connecting plates 7 are connected with the orthogonal laminated wood floor slabs 1 through self-tapping screws penetrating through the screw holes.
The first unbonded prestressed tendon 2 and the second unbonded prestressed tendon 3 are prestressed steel strands, and the anchorage device 4 is a clip type anchorage device.
The first unbonded prestressed tendons 2 and the second unbonded prestressed tendons 3 which are perpendicular to each other penetrate through the spliced floor slab to splice the floor slab, and the prestress of the first unbonded prestressed tendons 2 and the prestress of the second unbonded prestressed tendons 3 are respectively adjusted through the first anchoring connecting pieces 5 and the second anchoring connecting pieces 6, so that the self rigidity of the spliced floor slab and the connection rigidity with a wall body or a beam are improved, and the rigidity of the spliced floor slab under the action of vertical load and lateral load is improved.
Example 2
In this embodiment, the first unbonded prestressed tendon 2 and the second unbonded prestressed tendon 3 are prestressed steel strands, and the other steps are the same as those of embodiment 1.
Example 3
The first unbonded prestressed tendons 2 and the second unbonded prestressed tendons 3 in this example are finish-rolled deformed steel bars, and the rest is the same as in example 1.
Example 4
The first unbonded tendon 2 and the second unbonded tendon 3 in this embodiment are FRP tendons, and the other parts are the same as those in embodiment 1.
Example 5
The anchor 4 in this embodiment is a support anchor, and the rest is the same as in embodiment 1.
Example 6
The anchor 4 in this embodiment is a tapered plug anchor, and the rest is the same as that in embodiment 1.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides an quadrature veneer wood floor structure with two-way prestressing force, includes cube-shaped's concatenation floor and a plurality of anchor connecting piece, this concatenation floor side is opened has the through-hole of the relative both sides of intercommunication, the concatenation floor include quadrature veneer wood floor (1) that a plurality of unbonded prestressing tendons splice through passing the through-hole, unbonded prestressing tendons lie in the tip outside the through-hole and pass through ground tackle (4) anchor on anchor connecting piece, a serial communication port, two adjacent sides of concatenation floor all opened the through-hole, anchor connecting piece include the rectangle steel pipe of opening towards the horizontal direction, unbonded prestressing tendons pass the lateral wall of rectangle steel pipe, the top and the bottom of rectangle steel pipe all the symmetry be equipped with 2 and be used for the end plate be connected with wall body or roof beam, the overhanging end plate on be equipped with the screw hole.
2. The orthogonal plywood floor structure with bidirectional prestress of claim 1, wherein said through holes are distributed in columns on the side of the spliced floor, each column of through holes are spaced apart in the vertical direction, and the same ends of the unbonded prestressed tendons passing through the same column of through holes are fixed on the same anchoring connector.
3. An orthogonal plywood structure with bidirectional prestress according to claim 1, wherein said through holes on adjacent sides are staggered in the vertical direction.
4. An orthogonal laminated wood floor structure with bidirectional prestress according to claim 1, characterized in that two adjacent orthogonal laminated wood floor slabs (1) are connected by a connecting plate (7).
5. The orthogonal plywood floor structure with bidirectional prestress according to claim 4, wherein said connecting plates (7) are provided with screw holes, and said connecting plates (7) are connected with the orthogonal plywood floor (1) by self-tapping screws passed through the screw holes.
6. An orthogonal plywood structure with bidirectional prestressing according to claim 4, characterized in that said connecting plates (7) are rectangular steel plates.
7. An orthogonal plywood structure with two-way prestressing according to claim 4, wherein said connecting plate (7) is in plurality.
8. An orthogonal plywood structure with two-way prestress according to claim 1 wherein said rectangular steel tubes are internally and vertically provided with stiffening ribs.
9. The structure of claim 1, wherein the unbonded prestressed reinforcement is a prestressed strand, a finish-rolled screw steel or an FRP reinforcement.
10. An orthogonal plywood floor structure with bidirectional prestressing according to claim 1, characterized in that said anchorage means (4) are clip type anchorage means, support type anchorage means or tapered plug type anchorage means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010893024.XA CN112095909A (en) | 2020-08-31 | 2020-08-31 | Orthogonal laminated wood floor structure with bidirectional prestress |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010893024.XA CN112095909A (en) | 2020-08-31 | 2020-08-31 | Orthogonal laminated wood floor structure with bidirectional prestress |
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| CN112095909A true CN112095909A (en) | 2020-12-18 |
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| CN202010893024.XA Pending CN112095909A (en) | 2020-08-31 | 2020-08-31 | Orthogonal laminated wood floor structure with bidirectional prestress |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113585452A (en) * | 2021-06-30 | 2021-11-02 | 东南大学 | Full-prestress assembled orthogonal glued bamboo board-wall building structure system and construction method thereof |
| CN114319674A (en) * | 2022-02-17 | 2022-04-12 | 石家庄铁道大学 | Rectangular steel pipe OSB wood combined prestressed floor slab |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013190498A1 (en) * | 2012-06-22 | 2013-12-27 | Canella Doriano | Structural panel in reinforced wood |
| CN207392507U (en) * | 2017-10-10 | 2018-05-22 | 南京工业大学 | The orthogonal laminated wood shear wall connected in vertical seam by the connector that consumes energy |
| CN108396648A (en) * | 2018-03-28 | 2018-08-14 | 南京林业大学 | A kind of board member of hollow orthogonal glued wood and ultra-high performance concrete making |
| CN208293858U (en) * | 2018-03-28 | 2018-12-28 | 南京林业大学 | A kind of assembled floor made with CLT plate and unbonded prestressing tendon |
| CN208501878U (en) * | 2018-07-02 | 2019-02-15 | 西安建筑科技大学 | A kind of Self-resetting prefabrication and assembly construction frame structure interior joint |
| CN208934217U (en) * | 2018-08-22 | 2019-06-04 | 南京林业大学 | A kind of prestressed slab component made of orthogonal laminated wood |
| WO2020163235A2 (en) * | 2019-02-04 | 2020-08-13 | Cetres Holdings, Llc | Cross-laminated timber panels |
-
2020
- 2020-08-31 CN CN202010893024.XA patent/CN112095909A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013190498A1 (en) * | 2012-06-22 | 2013-12-27 | Canella Doriano | Structural panel in reinforced wood |
| CN207392507U (en) * | 2017-10-10 | 2018-05-22 | 南京工业大学 | The orthogonal laminated wood shear wall connected in vertical seam by the connector that consumes energy |
| CN108396648A (en) * | 2018-03-28 | 2018-08-14 | 南京林业大学 | A kind of board member of hollow orthogonal glued wood and ultra-high performance concrete making |
| CN208293858U (en) * | 2018-03-28 | 2018-12-28 | 南京林业大学 | A kind of assembled floor made with CLT plate and unbonded prestressing tendon |
| CN208501878U (en) * | 2018-07-02 | 2019-02-15 | 西安建筑科技大学 | A kind of Self-resetting prefabrication and assembly construction frame structure interior joint |
| CN208934217U (en) * | 2018-08-22 | 2019-06-04 | 南京林业大学 | A kind of prestressed slab component made of orthogonal laminated wood |
| WO2020163235A2 (en) * | 2019-02-04 | 2020-08-13 | Cetres Holdings, Llc | Cross-laminated timber panels |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113585452A (en) * | 2021-06-30 | 2021-11-02 | 东南大学 | Full-prestress assembled orthogonal glued bamboo board-wall building structure system and construction method thereof |
| CN114319674A (en) * | 2022-02-17 | 2022-04-12 | 石家庄铁道大学 | Rectangular steel pipe OSB wood combined prestressed floor slab |
| CN114319674B (en) * | 2022-02-17 | 2024-02-23 | 石家庄铁道大学 | Rectangular steel pipe OSB wood combined prestressed floor |
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Application publication date: 20201218 |