CN108086468B

CN108086468B - Prefabricated assembled CLT wood structure

Info

Publication number: CN108086468B
Application number: CN201711257773.8A
Authority: CN
Inventors: 尹婷婷; 韩振华
Original assignee: Shanghai Construction Group Co Ltd
Current assignee: Shanghai Construction Group Co Ltd
Priority date: 2017-12-04
Filing date: 2017-12-04
Publication date: 2020-07-07
Anticipated expiration: 2037-12-04
Also published as: CN108086468A

Abstract

The invention discloses a prefabricated assembled CLT wood structure, belongs to the technical field of constructional engineering, and solves the problems that the conventional CLT building needs to further improve the installation efficiency, improve the node strength, shorten the construction period and reduce the cost. This prefabricated assembled CLT timber structure, can punch in advance when the batch production of mill, during prefabricated installation, through rod type part and fastening element built-up connection between the CLT component, the screw rod inserts preformed hole one and connects all CLT components, both ends are fixed with the nut (use the round pin then do not need the nut), wherein in the component that has fastening element vertical preformed hole two, through preformed hole fixation nut, insert fastening element to preformed hole two again, wherein, fastening element is the circular structure of cavity, the tip has the support, the lateral part has U type draw-in groove, it is fixed to block bolt (or round pin axle) through U type draw-in groove, realize prefabricated installation, improve node strength.

Description

Prefabricated assembled CLT wood structure

Technical Field

The invention belongs to the technical field of constructional engineering, and particularly relates to a prefabricated assembled CLT wood structure.

Background

According to statistics, the current high-energy-consumption building in China is nearly 400 hundred million meters^３The energy consumption of unit building area is 2-3 times of that of developed countries, various policies of the country encourage the development of green buildings and building energy-saving industries, and the wood structure building has the obvious advantages of energy conservation, environmental protection and the like and has wide development space. CLT (cross-linked timber) is a novel wood building material, and CLT wood structure buildings not only have excellent carbon fixation property, but also can effectively reduce carbon emission in the building process, and are effective substitute materials for reinforced concrete in medium and high-rise buildings.

However, CLT materials are expensive on the one hand, and on the other hand, the number of currently used connectors, such as screws, angle irons, etc., is large, requiring a lot of manpower or construction time for field installation. Therefore, how to improve the node performance of the CLT building, and how to perform prefabrication, assembly and industrialization, thereby reducing the number of connecting pieces, reducing the construction time of field construction, shortening the construction period and reducing the cost is a necessary proposal for improving the advantages of the CLT wood structure building.

Disclosure of Invention

The invention aims to provide a prefabricated CLT wood structure, which improves the joint strength, meets the requirement of higher rigidity connection of high-rise buildings, realizes higher prefabrication and assembly rate and industrial production of joint connection, can greatly improve the field construction efficiency, shortens the construction period and reduces the cost by prefabricating and installing connecting pieces.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a prefabricated assembled CLT timber structure, includes connecting piece and at least two CLT components through the embedded connection of connecting piece, the connecting piece includes detachable pole type part and the fastening part of connecting, it is equipped with preformed hole one and preformed hole two to correspond on the CLT component.

Further, the first preformed holes are arranged in the CLT component and are perpendicular to the end direction of the inserted component or parallel to the thickness direction of the penetrated component, the central lines of all the first preformed holes are positioned on a straight line, and after the fastening part is removed, the rod-shaped part can move along the length direction of the first preformed holes.

Furthermore, the second preformed hole is arranged on the CLT component provided with the first preformed hole which is vertically inserted into the end part direction of the component, the second preformed hole is perpendicular to the first preformed hole, and the center of the second preformed hole is located on the central line of the first preformed hole.

Furthermore, the rod-shaped component is a pin shaft or a screw rod, the diameter of the pin shaft corresponds to that of the first reserved hole, and a groove is formed in the pin shaft in the direction close to the end portion of the pin shaft in the annular shaft direction; the diameter of the screw corresponds to that of the first reserved hole, and the end part of the screw is fixed by a nut.

Furthermore, the fastening part is a circular hollow clamping groove connecting piece with an opening, the end part of the fastening part is provided with a support, the clamping groove is U-shaped, the radius of the clamping groove corresponds to the diameter of the rod-shaped part, and a screw rod with a nut or a pin shaft with a groove can be clamped. Further the CLT member is a wall panel, a floor panel or a roofing panel.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. the punching and positioning of a factory can be realized, the prefabricated assembly type connection is realized, the installation is simple, the number of connecting pieces is small, the site construction time is shortened, and the construction efficiency is improved.

2. The universal node has the universality, can be connected with various nodes, reduces the cost of node design or processing, and realizes standardized production.

3. The connecting strength is increased, the screw or the pin is connected with the circular fastener, and the components are connected into a whole, so that the toughness and the ductility of the whole structure are greatly enhanced, and the integrity of the wall body and the wall body (or the floor slab) is maintained to a greater extent. When connecting upper and lower wall body, the shear force wall structure is also more reliable, the wholeness is better, bearing capacity is higher.

4. And installation errors and field processing are reduced.

5. Can realize detachable installation through preformed hole one and preformed hole two under the circumstances that does not damage CLT component structure and pleasing to the eye, the CLT component can be dismantled and replaced at will.

Drawings

The prefabricated CLT wood structure according to the present invention is given by the following examples and the accompanying drawings.

Fig. 1 is a schematic view of the vertical connection between horizontal wall panels and wall panels in a prefabricated CLT timber structure according to the present invention.

Fig. 2 is a schematic view of the elongated connection between horizontal wall panels and wall panels in the prefabricated CLT timber structure of the present invention.

Fig. 3 is a schematic view of the connection between the upper and lower wall panels and the wall panels in the prefabricated CLT timber structure of the present invention.

Fig. 4 is a schematic view of the connection between the upper and lower wall panels, the floor panel and the wall panels of the prefabricated CLT timber structure of the present invention.

In the figure, 11-wall panel, 12-floor panel, 20-bar type component, 30-fastening component, 41-preformed hole one, 42-preformed hole two.

Detailed Description

The prefabricated CLT wood structure according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is further noted that the drawings are in greatly simplified form and are not to precise scale, merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.

Referring to fig. 1 to 4, the structural components of the prefabricated CLT wood structure of the present invention will be described in detail.

Example one

As shown in fig. 1 to 4, a prefabricated CLT wood structure comprises a connecting piece and at least two CLT components connected in an embedded manner through the connecting piece, wherein the connecting piece comprises a rod-shaped part 20 and a fastening part 30 which are detachably connected, a first preformed hole 41 and a second preformed hole 42 are correspondingly arranged on each CLT component, and the first preformed hole 41 and the second preformed hole 42 are arranged in a cross manner.

Specifically, the combined use of the rod-shaped component 20 and the fastening component 30 can realize the prefabricated assembly type connection and disassembly of the CLT wood structure, improve the prefabricated assembly rate and improve the node rigidity. When the building is built, only a few connecting pieces are assembled on site, so that the site construction efficiency can be greatly improved, the construction period is shortened, and the cost is reduced. Moreover, after the fastening part is removed, the rod-shaped part can move along the length direction of the first reserved hole, so that the component can be detached and replaced without damaging the component during use and maintenance. Meanwhile, the joint connection strength is higher, the toughness and the ductility of the structure are enhanced, the structure is more reliable, the integrity is better, the bearing capacity is higher, and the requirement of a high-rise building high-rigidity connection system is met.

Specifically, the first preformed holes 41 are arranged in the CLT member and are inserted into the end direction of the member perpendicularly or run through the thickness direction of the member in parallel, the center lines of all the first preformed holes 41 are positioned on a straight line, and after the fastening part 30 is removed, the rod-shaped part 20 can move along the length direction of the first preformed holes 41.

In particular, the fastening member 30 is a circular hollow open-hole clamping groove connector, which may be a hollow steel pipe, with a support at the end and made of high-strength steel, wherein the clamping groove is U-shaped, and the radius of the clamping groove is related to the diameter of the rod-shaped member 20, and can clamp a screw with a nut or a grooved pin. The CLT member is, of course, a wall panel 11, a floor panel 12 or a roofing panel.

Example two

With continuing reference to fig. 1 to 4, the present embodiment provides a manufacturing method of a prefabricated CLT wood structure, which includes the following steps:

step S1 factory-produces CLT members such as wall panel 11, floor 12, and roofing, and sets prepared holes at their corresponding positions.

Step S2 is to select a screw, a nut, and a circular open slot as the fastening unit 30, insert the screw into the first prepared hole 41 and lock the screw with the nut, and then insert the circular open slot fastener to clamp the screw, thereby completing the connection between the CLT members.

In particular, with continued reference to fig. 1, a vertical connection between two horizontal CLT wall panels 11 and one vertical CLT wall panel 11 is achieved. With continued reference to fig. 2, an elongated connection between two horizontal CLT wall panels 11 and CLT wall panels 11 is achieved. With continued reference to fig. 3, a vertical connection between the two CLT wall panels 11 and the CLT wall panels 11 is achieved. With continued reference to fig. 4, a vertical connection between two horizontal CLT wall panels 11 and a vertical CLT floor 12 is achieved.

Of course, when a certain CLT member needs to be disassembled, the circular open pore clamping groove fastener is pulled out through the cross shape supported by the upper end part of the circular open pore clamping groove fastener, nuts at two ends are loosened (the step is not needed by using the pin shaft), the screw (or the pin shaft) is shifted and moved into one or two CLT members, the end part of the screw abuts against the end part of the reserved hole I of one CLT member, and the other CLT member which needs to be disassembled is completely separated from the other CLT member, so that the CLT members can be disassembled and replaced under the condition that the structure and the use of the other CLT members are not influenced.

In summary, the prefabricated assembled CLT wood structure provided by the invention is pre-perforated during mass production in a factory, when prefabricated, CLT components are connected through a screw (or a pin), two ends of the CLT components are respectively fixed by nuts (nuts are not needed when pins are used), wherein in the component with the fastener preformed hole II, the nuts are fixed through the preformed holes and then inserted into the fastener preformed hole II in the CLT component, and the circular perforated clamping groove fastener U-shaped clamping groove is inserted into the clamping screw (or the pin shaft) for fixing, so that the prefabricated installation is realized. When the CLT component is disassembled, the circular open pore clamping groove fastener is pulled out through the cross shape supported by the upper end part of the circular open pore clamping groove fastener, nuts at two ends are loosened (the step is not needed when the pin is used), the screw (or the pin) is shifted and moved to one or two CLT components, the end part is abutted against the end part of a reserved hole I of one CLT component and is completely separated from the other CLT component needing to be disassembled, and the disassembly and replacement of the CLT component can be realized under the condition that the structure and the use of the other CLT components are not influenced. This prefabricated assembled CLT timber structure not only can realize prefabricated assembled and connect and can dismantle, has improved the prefabricated assembly rate, has strengthened timber structure's toughness and ductility moreover, and the wholeness is better, and bearing capacity is higher, has satisfied the demand of the higher rigidity connected system of high-rise building.

The above description is only illustrative of the preferred embodiments of the present invention and does not limit the scope of the present invention in any way. Any changes and modifications of the above disclosure by those skilled in the art are within the scope of the appended claims.

Claims

1. The prefabricated CLT wood structure is characterized by comprising a connecting piece and at least two CLT components which are connected in an embedded mode through the connecting piece, wherein the connecting piece comprises a rod-shaped part and a fastening part which are detachably connected, and the CLT components are correspondingly provided with a first preformed hole and a second preformed hole; the first preformed holes are arranged in the CLT component and are inserted into the end part direction of the component vertically or run through the thickness direction of the component in parallel, the central lines of all the first preformed holes are positioned on the same straight line, the first preformed holes and the second preformed holes are arranged in a crossed mode, and after the fastening part is removed, the rod-shaped part can move along the length direction of the first preformed holes; the rod-shaped component is a pin shaft or a screw rod, the diameter of the pin shaft corresponds to the diameter of the first reserved hole, and a groove is formed in the pin shaft in the direction close to the end portion of the pin shaft in the annular shaft direction; the diameter of the screw corresponds to that of the first reserved hole, and the end part of the screw is fixed by a nut; the fastening part is a circular hollow perforated clamping groove connecting piece, a support is arranged at the end part of the fastening part, the clamping groove is U-shaped, the radius of the clamping groove corresponds to the diameter of the rod-shaped part, and a screw rod with a nut or a pin shaft with a groove can be clamped.

2. The prefabricated CLT timber structure as claimed in claim 1, wherein the second prepared hole is provided in the CLT member provided with the first prepared hole perpendicular to the direction of the end of the inserted member, the second prepared hole is perpendicular to the first prepared hole, and the center of the second prepared hole is located on the center line of the first prepared hole.

3. The prefabricated CLT timber structure according to claim 1, wherein the CLT member is a wall panel, a floor panel or a roofing panel.