CN111236431A - Laminated wood latticed shell structure - Google Patents

Abstract

The invention discloses a laminated wood latticed shell structure, which is characterized in that a first laminated layer is formed by utilizing a first laminated wood beam and a second laminated layer is formed by utilizing a second laminated wood beam respectively, then the first laminated layer is placed on the second laminated layer, and the first laminated wood beam and the second laminated wood beam are mutually connected and fixed through high-strength screw group connecting pieces which are orderly arranged. To further increase the overall stiffness of the laminated wood cell structure, a reinforcing laminated wood beam is provided under the second laminated wood beam in alignment with the first laminated wood beam. Because the wood beams are not in the same cambered surface, the wood beams are continuously communicated in the connecting node area, namely, each first glued wood beam, each second glued wood beam and each reinforced glued wood beam are complete in the extending direction of the first glued wood beam, each second glued wood beam and each reinforced glued wood beam, and the first glued wood beams, the second glued wood beams and the reinforced glued wood beams are not required to be broken in the connecting node area. The problems that the glued wood beam is difficult to connect in the node area and the rigidity is insufficient, the strength of the glued wood beam in the connecting node area is weakened by the inserted steel plate, and the building effect is poor after the connecting piece is exposed in the node area in the prior art are solved.

Description

Laminated wood latticed shell structure

Technical Field

The invention relates to the field of building structure design, in particular to a laminated wood latticed shell structure.

Background

The laminated wood structure has the advantages of light weight, environmental protection, convenience in construction and installation and the like, can realize assembly construction, and is very suitable for buildings with special use functions or buildings with wood structure building effect requirements. The laminated wood structural material belongs to renewable resources, and also conforms to the large direction of green environmental protection and assembled installation in the field of the design of the existing building structures. However, at present, the engineering cases of the large-span space latticed shell structure are almost all steel structures or aluminum alloy structures, and structural engineering using laminated wood is less in use. This is because the material of the structural material of the laminated wood is not uniform, and the transverse striations are stressed weakly. The connection between the glued wood beams is difficult to realize rigidity, so that more structural systems are not suitable, and the current long-span wood structure building engineering has fewer cases, so that the wood structure system needs to be continuously developed and researched, and a plurality of advantages of the glued wood structure are fully utilized. In the prior art, a large-span latticed shell structure is realized by utilizing glued wood beams, wherein a plurality of groups of glued wood beams are connected into a whole and fixedly connected through steel plates and bolts.

Patent CN106958315A provides a large-span double-limb adjustable prestressed beam string, which comprises a laminated wood beam group. Every two laminated wood beams in each laminated wood beam group are fixedly connected through beam top steel plates and bolts, and the two laminated wood beam groups are fixedly connected through a plurality of groups of connecting pieces. Two groups of metal fixing parts are fixedly arranged between the two groups of glued wood beam groups and fixedly connected with the inverted quadrangular pyramid string-stretching connecting device, two groups of prestressed tendons are fixedly installed on the inverted quadrangular pyramid string-stretching connecting device, and the prestressed tendons are respectively and fixedly connected with anchoring devices installed at two ends of the glued wood beam groups. The application can be used as a string stretching point through the inverted quadrangular pyramid string stretching connecting device, and can also connect a plurality of groups of glued wood beams into a whole, so that the whole is broken into parts, and the problems of processing and transportation of the large-span glued wood beams are solved; the screw and the turning block at the bottom can apply prestress, and the prestress can be regulated and controlled at any time before loading and in the using process.

In the prior art, the glued wood beams are of a single-layer structure, and if the glued wood beams are applied to a large-span latticed shell structure, the glued wood beams are fixedly connected through steel plates and bolts, and the single-layer structure can cause that the glued wood beams are difficult to connect in a node area, so that the rigidity of the connecting nodes and the overall rigidity of the latticed shell structure are difficult to guarantee.

Therefore, there is a need to propose a solution suitable for glued wood latticed shell structures.

Disclosure of Invention

The invention aims to provide a laminated wood latticed shell structure, which is used for solving the problems that a laminated wood beam is difficult to connect in a node area, and the rigidity of a connecting node and the integral rigidity of the latticed shell structure are difficult to ensure in the prior art.

In order to solve the technical problem, the invention provides a laminated wood latticed shell structure, which comprises a first laminated wood beam, a second laminated wood beam, a reinforced laminated wood beam and a high-strength screw group connecting piece, wherein the first laminated wood beam is connected with the second laminated wood beam through a screw;

the first glued wood beams, the second glued wood beams and the reinforced glued wood beams are all multiple in number, the multiple first glued wood beams are arranged in the first cambered surface at intervals and form a first superposed layer, the multiple second glued wood beams are arranged in the second cambered surface at intervals and form a second superposed layer, and the multiple reinforced glued wood beams are arranged in the third cambered surface at intervals and form a third superposed layer; the second laminated layer is disposed between the first laminated layer and the third laminated layer;

the first glued wood beam with pass through between the second glued wood beam the screw that excels in organizes the connecting piece and connects, first glued wood beam rather than contact the contained angle between the second glued wood beam is a nonzero contained angle, strengthen glued wood beam with pass through between the second glued wood beam the screw that excels in organizes the connecting piece and connect and with first glued wood beam aligns the setting.

Optionally, the reinforced laminated wood beam further comprises a pull rope and a pull rod, wherein one end of the pull rod is connected with the first side surface of the reinforced laminated wood beam, the other end of the pull rod is used for penetrating and fixing the pull rope, the number of the pull rope and the number of the pull rod are multiple, and the multiple pull ropes form a net structure;

the first side is the side of the reinforced laminated wood beam opposite the side for connection to the second laminated wood beam.

Optionally, one end of the pull rod is connected with the first side surface through a screw.

Optionally, the number of the reinforced laminated wood beams is smaller than the number of the first laminated wood beams, and the reinforced laminated wood beams are arranged every two spaced first laminated wood beams.

Optionally, the high-strength screw group connecting piece comprises a first connecting piece and a second connecting piece;

the connecting surface of the first laminated wood beam and the second laminated wood beam is a first connecting surface, and the connecting surface of the second laminated wood beam and the first laminated wood beam is a second connecting surface;

first through holes, first blind holes and second blind holes are arranged on the first connecting surface at intervals, third blind holes with the same extending direction as the first through holes are arranged at the positions, corresponding to the first through holes, on the second connecting surface, second through holes with the same extending direction as the first blind holes are arranged at the positions, corresponding to the first blind holes, on the second connecting surface, and fourth blind holes with the same extending direction as the second blind holes are arranged at the positions, corresponding to the second blind holes, on the second connecting surface;

the first through hole is matched with the third blind hole to form a fifth blind hole, the first blind hole is matched with the second through hole to form a sixth blind hole, and the second blind hole is matched with the fourth blind hole to form a first buried hole;

the first connecting piece is arranged in each of the fifth blind hole and the sixth blind hole, and the second connecting piece is arranged in the first buried hole;

the first connector is used for connecting the first and second laminated wood beams, and the second connector is used for positioning the first and second laminated wood beams.

Optionally, the first connector comprises a screw.

Optionally, the second connector comprises a stainless steel pin.

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

according to the laminated wood latticed shell structure provided by the invention, the first laminated layer is formed by the first laminated wood beam and the second laminated layer is formed by the second laminated wood beam respectively, then the first laminated layer is placed on the second laminated layer, and the first laminated wood beam and the second laminated wood beam are mutually connected and fixed through the orderly arranged high-strength screw group connecting pieces. In addition to this, in order to further increase the overall stiffness of the laminated wood cell structure, the reinforced laminated wood beam is arranged below the second laminated wood beam in alignment with the first laminated wood beam. Because the first laminated wood beam, the second laminated wood beam and the reinforced laminated wood beam are not in the same cambered surface, the first laminated wood beam, the second laminated wood beam and the reinforced laminated wood beam are continuously communicated in the connecting node area, namely, each first laminated wood beam, each second laminated wood beam and each reinforced laminated wood beam are complete in the extending direction of the first laminated wood beam, and do not need to be broken in the connecting node area. The problems that the glued wood beam is difficult to connect in the node area and the rigidity is insufficient, the strength of the glued wood beam in the connecting node area is weakened by the inserted steel plate, and the building effect is poor after the connecting piece is exposed in the node area in the prior art are solved. Can realize that the veneer wood structure span increases for large-span space timber structure building, make full use of the advantage of veneer wood structure, the veneer wood structure light, low carbon environmental protection, construction can realize the prefabricated installation, and timber structure belongs to renewable materials, if can realize the span increase, can extend the use of timber structure building greatly, and the architectural effect is pleasing to the eye.

In addition, the inhaul cables can be arranged on the inner side of the laminated wood latticed shell structure, the aim of improving the overall rigidity and stability of the laminated wood latticed shell structure is fulfilled by applying initial prestress to the inhaul cables, the appearance of the laminated wood latticed shell structure can be effectively kept, the out-of-plane bending moment of the laminated wood latticed shell structure can be reduced by adding the inhaul cables, and the laminated wood structure mainly bears axial pressure. The material intensity of veneer lumber structure is low, increases the interior force that the cable and pretension can increase the veneer lumber structure, if pretension and structural rigidity match, the cable can play the effect that increases structural integrity and stability.

Drawings

FIG. 1 is an isometric view of a laminated wood shell construction provided by an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a top view of FIG. 1;

FIG. 5 is an exploded view of FIG. 1;

100-first laminated wood beam, 200-second laminated wood beam, 300-reinforced laminated wood beam, 400-stay rope, 500-pull rod, 10-first laminated layer, 20-second laminated layer, 30-third laminated layer, 40-reticular structure.

Detailed Description

The following describes in more detail embodiments of the present invention with reference to the schematic drawings. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Referring to fig. 1 to 4, an embodiment of the present invention provides a laminated wood lattice shell structure, which includes a first laminated wood beam 100, a second laminated wood beam 200, a reinforced laminated wood beam 300, and a high-strength screw set connection member. The first laminated layer 10 is formed by arranging the first glued wood beam 100 at intervals in a first arc surface, the second laminated layer 20 is formed by arranging the second glued wood beam 200 at intervals in a second arc surface, and the third laminated layer 30 is formed by arranging the reinforced glued wood beam 300 at intervals in a third arc surface; the second laminate layer 20 is arranged between the first laminate layer 10 and the third laminate layer 30. The first glued wood beam 100 is connected with the second glued wood beam 200 through the high-strength screw group connecting piece, an included angle between the first glued wood beam 100 and the second glued wood beam 200 in contact with the first glued wood beam is a non-zero included angle, and the reinforced glued wood beam 300 is connected with the second glued wood beam 200 through the high-strength screw group connecting piece and is aligned with the first glued wood beam 100. The number of the first and second glulam beams 100 and 200 is plural, the number of the reinforced glulam beam 300 is at least one, and the plural first glulam beams 100 may be disposed in parallel at intervals or in non-parallel at intervals, and similarly, the plural second glulam beams 200 may be disposed in parallel at intervals or in non-parallel at intervals. It is noted that the first, second and third arcs are spatially different, but the shapes of the first, second and third arcs should match.

The difference from the prior art is that the laminated wood shell structure provided in the embodiment of the present invention uses the first laminated layer 10 formed by the first laminated wood beam 100 and the second laminated layer 20 formed by the second laminated wood beam 200, and then the first laminated layer 10 is placed on the second laminated layer 20, and the first laminated wood beam 100 and the second laminated wood beam 200 are connected and fixed to each other by the high-strength screw group connectors arranged in order. In addition to this, in order to further increase the overall rigidity of the laminated wood lattice shell structure, the reinforced laminated wood beam 300 is disposed under the second laminated wood beam 200 in alignment with the first laminated wood beam 100. Since the first, second and reinforced laminated wood beams 100, 200 and 300 are not in the same arc surface, the first, second and reinforced laminated wood beams 100, 200 and 300 are continuously connected in the joint area, that is, each of the first, second and reinforced laminated wood beams 100, 200 and 300 is complete in the extending direction thereof, and does not need to be broken in the joint area. The problems that the glued wood beam is difficult to connect in the node area and the rigidity is insufficient, the strength of the glued wood beam in the connecting node area is weakened by the inserted steel plate, and the building effect is poor after the connecting piece is exposed in the node area in the prior art are solved. Can realize that the veneer wood structure span increases for large-span space timber structure building, make full use of the advantage of veneer wood structure, the veneer wood structure light, low carbon environmental protection, construction can realize the prefabricated installation, and timber structure belongs to renewable materials, if can realize the span increase, can extend the use of timber structure building greatly, and the architectural effect is pleasing to the eye.

In addition, the number of the reinforced laminwood beams 300 may be less than or equal to the number of the first laminwood beams 100, and when the number of the reinforced laminwood beams 300 is less than the number of the first laminwood beams 100, the reinforced laminwood beams 300 may be disposed at intervals of a certain number of the first laminwood beams 100, for example, referring to fig. 1 and 2, in an embodiment of the present invention, the number of the reinforced laminwood beams 300 is less than the number of the first laminwood beams 100, and the reinforced laminwood beams 300 are disposed at intervals of two first laminwood beams 100. It is understood that when the number of the reinforced glulam beams 300 is less than the number of the first glulam beams 100, it is not limited to the manner disclosed in the embodiments of the present invention, and in other embodiments, the reinforced glulam beams 300 may be further provided at intervals of one or three or four or more first glulam beams 100, which is not limited herein. When the number of the reinforced laminated wood beams 300 is equal to the number of the first laminated wood beams 100, one reinforced laminated wood beam 300 is provided for each laminated wood beam.

Further, referring to fig. 2 and 5, the applicant considers that the stiffness of the laminated wood long-span latticed shell structural system is lower as the span is increased, and the required components are larger. Therefore, in order to make the structural member slim and light, the cable 400 may be disposed inside the structure in combination with the force advantage of the cable 400. Therefore, the laminated wood lattice shell structure may further include a pulling rope 400 and a pulling rod 500, one end of the pulling rod 500 is connected to the first side surface of the reinforced laminated wood beam 300, the other end of the pulling rod 500 is used for passing and fixing the pulling rope 400, the number of the pulling ropes 400 and the number of the pulling rods 500 are multiple, and the multiple pulling ropes 400 form a net structure 40. The first side is the side of the reinforced laminated wood beam 300 opposite the side for connection to the second laminated wood beam 200.

The aim of improving the overall rigidity and stability of the laminated wood latticed shell structure is fulfilled by applying initial prestress to the inhaul cable 400, the appearance of the laminated wood latticed shell structure can be effectively maintained, the out-of-plane bending moment of the laminated wood latticed shell structure can be reduced by adding the inhaul cable 400, and the laminated wood structure mainly bears axial pressure. The strength of the material of the laminated wood structure is low, the internal force of the laminated wood structure can be increased by increasing the stay cable 400 and the pretension, and if the pretension is matched with the structural rigidity, the stay cable 400 can play a role in increasing the structural integrity and stability.

With continued reference to fig. 2, in the embodiment of the present invention, two cables 400 are passed through the pull rod 500, and it can be understood that each pull rod 500 only needs to pass through and fix at least one cable 400. In other embodiments, three or four or even more pulling cables 400 can be passed through and fixed on each pulling rod 500, which is not described herein. In addition, as for the connection manner of the tie rod 500 and the reinforced laminated wood beam 300, the fixed connection can be realized by a screw or a bolt or other connection members, which is not limited herein.

Optionally, the high-strength screw group connecting member includes a first connecting member and a second connecting member, a connecting surface of the first laminated wood beam 100 and the second laminated wood beam 200 is a first connecting surface, and a connecting surface of the second laminated wood beam 200 and the first laminated wood beam 100 is a second connecting surface. The first blind hole, the first blind hole and the second blind hole are arranged on the first connecting surface at intervals, a third blind hole which is the same as the extending direction of the first through hole is arranged at a position on the second connecting surface corresponding to the first through hole, a second through hole which is the same as the extending direction of the first blind hole is arranged at a position on the second connecting surface corresponding to the first blind hole, and a fourth blind hole which is the same as the extending direction of the second blind hole is arranged at a position on the second connecting surface corresponding to the second blind hole. The first through hole is matched with the third blind hole to form a fifth blind hole, the first blind hole is matched with the second through hole to form a sixth blind hole, and the second blind hole is matched with the fourth blind hole to form a first buried hole. And the first connecting piece is arranged in the fifth blind hole and the sixth blind hole, and the second connecting piece is arranged in the first buried hole. The first connector is used to connect the first and second laminated wood beams 100 and 200, and the second connector is used to position the first and second laminated wood beams 100 and 200. The reinforced laminated wood beam 300 and the second laminated wood beam 200 are coupled in the same manner as the first laminated wood beam 100 and the second laminated wood beam 200.

Alternatively, the first connector may comprise a screw and the second connector may comprise a stainless steel pin.

The first and second glulam beams 100 and 200 and the reinforced glulam beam 300 can be effectively connected by the above-mentioned structure, and the high-strength screw set connection member is not limited to the above-mentioned structure, for example, the number of the first through holes may be at least two. In the embodiment of the present invention, the number of the first through holes may be two, but is not limited to two, and in other embodiments, the number may also be three or four or more, which is not limited herein. In addition, the number of the third blind holes and the number of the first through holes may be the same. It is understood that the high tensile screw set connection may be implemented as long as it can achieve effective connection of the first and second glulam beams 100 and 200 and the reinforced glulam beam 300. Since the main improvement point of the present invention is not located at the high-strength screw set connection member, the descriptions of other types of high-strength screw set connection members are omitted.

In summary, in the laminated wood lattice shell structure provided by the present invention, the first laminated layer is formed by the first laminated wood beam and the second laminated layer is formed by the second laminated wood beam, and then the first laminated layer is placed on the second laminated layer, and the first laminated wood beam and the second laminated wood beam are connected and fixed to each other through the high-strength screw group connecting members arranged in order. In addition to this, in order to further increase the structural rigidity of the laminated wood shell structure, the reinforced laminated wood beam is arranged below the second laminated wood beam in alignment with the first laminated wood beam. Because the first laminated wood beam, the second laminated wood beam and the reinforced laminated wood beam are not in the same cambered surface, the first laminated wood beam, the second laminated wood beam and the reinforced laminated wood beam are continuously communicated in the connecting node area, namely, each first laminated wood beam, each second laminated wood beam and each reinforced laminated wood beam are complete in the extending direction of the first laminated wood beam, and do not need to be broken in the connecting node area. The problems that the glued wood beam is difficult to connect in the node area and the rigidity is insufficient, the strength of the glued wood beam in the connecting node area is weakened by the inserted steel plate, and the building effect is poor after the connecting piece is exposed in the node area in the prior art are solved. Can realize that the veneer wood structure span increases for large-span space timber structure building, make full use of the advantage of veneer wood structure, the veneer wood structure light, low carbon environmental protection, construction can realize the prefabricated installation, and timber structure belongs to renewable materials, if can realize the span increase, can extend the use of timber structure building greatly, and the architectural effect is pleasing to the eye.

In addition, the inhaul cables can be arranged on the inner side of the laminated wood latticed shell structure, the aim of improving the overall rigidity and stability of the laminated wood latticed shell structure is fulfilled by applying initial prestress to the inhaul cables, the appearance of the laminated wood latticed shell structure can be effectively kept, the out-of-plane bending moment of the laminated wood latticed shell structure can be reduced by adding the inhaul cables, and the laminated wood structure mainly bears axial pressure. The material intensity of veneer lumber structure is low, increases the interior force that the cable and pretension can increase the veneer lumber structure, if pretension and structural rigidity match, the cable can play the effect that increases structural integrity and stability.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example" or "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. And the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. A laminated wood latticed shell structure is characterized by comprising a first laminated wood beam, a second laminated wood beam, a reinforced laminated wood beam and a high-strength screw group connecting piece;

the first glued wood beams, the second glued wood beams and the reinforced glued wood beams are all multiple in number, the multiple first glued wood beams are arranged in the first cambered surface at intervals and form a first superposed layer, the multiple second glued wood beams are arranged in the second cambered surface at intervals and form a second superposed layer, and the multiple reinforced glued wood beams are arranged in the third cambered surface at intervals and form a third superposed layer; the second laminated layer is disposed between the first laminated layer and the third laminated layer;

the first glued wood beam with pass through between the second glued wood beam the screw that excels in organizes the connecting piece and connects, first glued wood beam rather than contact the contained angle between the second glued wood beam is a nonzero contained angle, strengthen glued wood beam with pass through between the second glued wood beam the screw that excels in organizes the connecting piece and connect and with first glued wood beam aligns the setting.

2. The laminated wood shell structure of claim 1, further comprising a pulling rope and a pulling rod;

one end of the pull rod is connected with the first side face of the reinforced glued wood beam, the other end of the pull rod is used for penetrating and fixing the pull cables, the number of the pull cables and the number of the pull rods are multiple, and the multiple pull cables form a net structure;

the first side is the side of the reinforced laminated wood beam opposite the side for connection to the second laminated wood beam.

3. The laminated wood shell structure of claim 2, wherein one end of the tie bar is connected to the first side surface by a screw.

4. The laminated wood shell structure of claim 1, wherein the number of the reinforced laminated wood beams is less than the number of the first laminated wood beams, the reinforced laminated wood beams being disposed every two first laminated wood beams apart.

5. The laminated wood shell structure of claim 1, wherein the high-strength screw set connection member comprises a first connection member and a second connection member;

the connecting surface of the first laminated wood beam and the second laminated wood beam is a first connecting surface, and the connecting surface of the second laminated wood beam and the first laminated wood beam is a second connecting surface;

first through holes, first blind holes and second blind holes are arranged on the first connecting surface at intervals, third blind holes with the same extending direction as the first through holes are arranged at the positions, corresponding to the first through holes, on the second connecting surface, second through holes with the same extending direction as the first blind holes are arranged at the positions, corresponding to the first blind holes, on the second connecting surface, and fourth blind holes with the same extending direction as the second blind holes are arranged at the positions, corresponding to the second blind holes, on the second connecting surface;

the first through hole is matched with the third blind hole to form a fifth blind hole, the first blind hole is matched with the second through hole to form a sixth blind hole, and the second blind hole is matched with the fourth blind hole to form a first buried hole;

the first connecting piece is arranged in each of the fifth blind hole and the sixth blind hole, and the second connecting piece is arranged in the first buried hole;

the first connector is used for connecting the first and second laminated wood beams, and the second connector is used for positioning the first and second laminated wood beams.

6. The laminated wood shell structure of claim 5, wherein the first connector comprises a screw.

7. The laminated wood lattice shell construction of claim 5, wherein the second connector comprises a stainless steel pin.

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