A timber structure double-layer staggered mutual support slab-column system

Abstract

The utility model discloses a kind of wood structure double-layer staggered mutual support plate column system, by upper and lower mutual support plate, web, support truss and stand column composition;Upper and lower mutual support plate is vertically jointed by dowel in cross mutual support position using similar bar, upper and lower mutual support plate bar arrangement mode is identical, in horizontal plane is orthogonal. Web is divided into vertical web and inclined web, vertical web between upper and lower plate at main mutual support point, using long screw rod is tied, change web height can adjust mutual support plate face external force performance;Inclined web is set between vertical web at interval;Mutual support plate four edges are supported with open-web truss, truss upper chord and stand column are connected using hoop dowel, lower chord is connected using through dowel, form double-layer staggered mutual support plate column system.The utility model component type is less, installation is convenient, it is convenient for industrialization production, more material-saving economy, effectively improve the problem that plane mutual support face external bearing capacity and rigidity are insufficient, with good stress performance.

Description

Technical Field

[0001] This utility model belongs to the field of building structure engineering technology, specifically relating to a double-layer staggered and mutually supportive wooden structure column system. Background Technology

[0002] With its low-carbon and environmentally friendly properties, durable performance, and ease of construction, timber structures occupy a unique position in the construction field. The architectural spaces they create not only convey a tranquil and peaceful atmosphere but also provide residents with a comfortable experience close to nature. Today, timber structure engineering is receiving global attention and frequently appears in various designs and constructions. Interlocking structures are a type of rod-system structure characterized by overlapping members. The components support each other, with each member both supporting and being supported by another adjacent member. They are characterized by simple connection structures and rhythmic aesthetics. Through this interlocking construction method, interlocking structures achieve a simple unity of component and node forms. This concise structural design also makes on-site assembly easier and more convenient, gaining widespread attention in prefabricated buildings.

[0003] However, single-story interlocking structures have relatively low strength and stiffness, weak resistance to seismic loads, low safety reserves, and cannot achieve large spans. Therefore, it is urgent to improve the strength and stiffness of interlocking structures and increase their building span. Summary of the Invention

[0004] Purpose of the utility model: To address the aforementioned technical problems, this invention provides a double-layered interlocking and mutually supporting wooden plate-column system. The double-layered planar mutually supporting structure is connected by vertical web members, diagonal web members, and through-bolts. By adjusting the height of the web members, the out-of-plane load-bearing capacity and deformation resistance of the double-layered plate structure can be effectively controlled. At the same time, the support of the double-layered mutually supporting plate structure adopts hollow trusses with mortise and tenon joints. The trusses and supporting columns also adopt traditional Chinese wooden structure connection methods such as tenon joints and straight tenons, reducing the use of metal connectors and making the structural assembly more convenient and efficient.

[0005] The objective of this utility model is achieved through the following technical solution: A double-layer staggered inter-support plate and column system for timber structure includes upper and lower staggered inter-support plates, central web members, supporting open web trusses, and supporting timber columns; The staggered inter-supporting plates are divided into upper and lower planar inter-supporting grid plates, both of which are formed by unit members I and unit members II vertically overlapping in the plane at the intersection of inter-supporting positions using a tenon and mortise method, forming a plate-type load-bearing unit that can independently bear vertical loads; the upper and lower planar inter-supporting grid plates are arranged in the same way and are orthogonal in the horizontal direction, which can weaken the defects that may exist in a single direction of each layer of plate and improve the uniformity of the overall performance of the combined double-layer plate; The central web members are divided into vertical web members and diagonal web members. The upper and lower planes support each other and the grid plates are connected by a through-bolt at the intersection of the vertical web members. The supporting hollow truss includes an upper chord wooden beam, a lower chord wooden beam, and vertical web members of the truss. The upper chord wooden beam is connected to the supporting wooden column by a mortise and tenon joint, and the lower chord wooden beam is connected to the supporting wooden column by a straight tenon joint.

[0006] Preferably, unit member I and unit member II are two-span and three-span respectively, wherein the two-span unit member I includes one central mortise and two end mortises, and the three-span unit member II includes two 1 / 3 mortises and two end mortises.

[0007] Preferably, the vertical web member has a circular hole along its longitudinal center for connecting a long screw rod, and the diameter of the circular hole is slightly larger than the diameter of the screw rod; by changing the height of the vertical web member, the out-of-plane bearing capacity and deformation resistance of the double-layer mutual bearing plate can be effectively adjusted.

[0008] Preferably, the diagonal web members are alternately arranged between some of the vertical web members to form a stable spatially interlocking and mutually supporting double-layer structural plate.

[0009] Preferably, the through-bolt passes through the vertical web bar and connects the upper and lower planar inter-supporting grid plates along the longitudinal holes to form a double-layer hollow web plate system; the through-bolt is fastened with large washer bolts at the contact points with the wooden members of the upper and lower planar inter-supporting grid plates to avoid insufficient local pressure on the wood.

[0010] Preferably, the upper chord timber beam, lower chord timber beam, unit member I and unit member II all have rectangular cross sections, and their materials are engineered wood such as laminated veneer timber, veneer laminated lumber, parallel veneer laminated timber or laminated veneer laminated timber.

[0011] Preferably, the cross-sections of the supporting wooden columns, truss vertical web members, and vertical web members are all circular, and their materials are engineered wood such as laminated veneer lumber, veneer laminated timber, parallel veneer laminated timber, or laminated veneer laminated timber.

[0012] As a preferred embodiment, the double-layer staggered support plate and column system of the wooden structure is characterized in that: the through-bolt can be made of stainless steel or alloy steel, or metal bolts.

[0013] As a preferred embodiment, the aforementioned double-layer staggered interlocking slab-column system of wooden structure is characterized in that: the diagonal web members can be made of metal pipes or wooden rods, and the ends of the web members are pre-connected with metal end plates with screw holes, which are fixed on site using wood screws.

[0014] The construction method of the aforementioned double-layer staggered inter-supported slab-column system for timber structures includes the following steps: S1: Factory prefabrication of unit rod I, unit rod II, vertical web members, diagonal web members, supporting wooden hollow trusses and supporting wooden columns, and processing matching tenons and mortises at corresponding positions according to the connection and assembly requirements of each component; S2: Construct supporting wooden pillars and set up a temporary support system; S3: The lower chord wooden beam of the hollow truss is connected to the supporting wooden column using a straight tenon connection method; S4: Construct the lower planar inter-support grid plate, and sequentially complete the tenon and mortise lap joints of unit member I and unit member II at the cross-support positions, and the lap joints of the members with the lower chord of the open truss; S5: Construct the vertical web members and top chord of the hollow truss, and connect the top chord wooden beam and the supporting wooden column with mortise and tenon joints; S6: The lower layer planar inter-support grid plate is used as the construction platform, and the upper layer planar inter-support grid plate is overlapped. The construction method is the same as the lower layer plate member laying method, and they are only orthogonal in the horizontal direction. S7: Construct vertical web members between the upper and lower plane mutually supporting grid plates, and use through-bolts and large washers for connection and fixation; S8: Diagonal web members are installed between some of the vertical web members. The ends of the web members are pre-connected with metal end plates with screw holes. Wood screws are used to fix them on site, ultimately forming a stable spatially interlocking and mutually supporting double-layer structural slab-column system.

[0015] This utility model organically combines traditional Chinese mortise and tenon joints, modern engineered wood, interlocking structural systems, and spatial flat grid structures. The structure is composed of a large number of small-sized components that are interlocked and supported. It does not require large hoisting equipment or professional installation techniques. With simple training, it can be quickly assembled and has high promotional value in small and medium-sized span buildings such as residential buildings, product showrooms, urban communities, and rural activity centers.

[0016] The beneficial effects of this utility model are: 1. Significantly Improved Structural Performance. Traditional planar inter-support structures suffer from unidirectional stress, often exhibiting better compressive performance than tensile performance due to uplift forces. Addressing the uplift force issue typically requires complex node connections, which weakens the components at the nodes and complicates installation. This invention connects two simple inter-support structures with web members to form a balanced double-layer inter-support floor slab, resulting in a simple structure, convenient connection, and significantly improved overall structural performance.

[0017] 2. Expanded application scenarios. The double-layer staggered mutual support plate system of this utility model solves the problem of unidirectional force on the planar grid by adopting the method of mutual support between the upper and lower parts. It can be widely used in various geometric building structures, such as cylindrical surfaces, spherical surfaces and free-form surfaces, and can meet the requirements of larger building spans.

[0018] 3. Improved construction efficiency. This system features simple components, easy node construction, and facilitates industrial production and widespread adoption. It effectively combines traditional Chinese mortise and tenon joints, modern engineered wood, mutual support systems, and spatial flat grid structures to achieve spatial mutual support for small-sized components, enabling rapid assembly without the need for heavy lifting equipment during construction.

[0019] 4. Full utilization of material advantages. The system uses hollow rods for the web members, with metal tie rods running through the middle, passing through the upper and lower flat plates, and fixed to the outer wooden members with bolts and large washers. When the web members are under compression, the force is borne by the web members; when under tension, the force is borne by the metal tie rods, thus leveraging the performance advantages of different materials.

[0020] 5. Harmonious construction of architectural and structural nodes. The use of interlocking mortise and tenon joints ensures that the tops of intersecting members are flush, satisfying the requirement for member continuity while reducing the structural layer height and improving the building's clear height. The use of tenon joints with ferrules solves the connection difficulties of multiple wooden beams converging at the column head, while the mutual restraint of converging members improves the stability of the components themselves. Attached Figure Description

[0021] Figure 1 This is a simplified overall diagram of the double-layer staggered and mutually supporting wooden column system of this utility model; Figure 2 This is a schematic diagram of the supporting wooden column node of the double-layer staggered and mutually supporting wooden column system of this utility model; Figure 3 This is a schematic diagram of the peripheral support hollow truss structure of the double-layer staggered and mutually supporting wooden column system of this utility model. Figure 4 This is a schematic diagram of a single-layer planar inter-supporting plate structure in the double-layer staggered inter-supporting plate column system of the present invention. Figure 5 This is a schematic diagram of the upper and lower staggered inter-support plates connection method of the double-layer staggered inter-support plate column system of the present invention; Figure 6 This is a schematic diagram of the assembly method of the single-layer inter-supporting planar plate in the double-layer staggered inter-supporting plate-column system of the wooden structure of this utility model. Figure 7 This is a simplified force diagram of a single mutually supporting member in the double-layer staggered mutually supporting plate-column system of the wooden structure of this utility model; Figure 8 This is a simplified diagram of a set of inter-supporting unit relationships in the double-layer staggered inter-supporting plate-column system of the present invention; Figure 9 This is a scaled-down schematic diagram of the double-layer staggered and mutually supporting wooden column system of this utility model. In the diagram: 1 is an interlocking support plate, 2 is a central web member, 3 is a supporting open web truss, 4 is a supporting wooden column, 1-1 is unit member I, 1-2 is unit member II, 2-1 is a vertical web member, 2-2 is a through-bolt, 2-3 is a diagonal web member, 3-1 is an upper chord wooden beam, 3-2 is a lower chord wooden beam, and 3-3 is a truss vertical web member. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1-9 As shown, this embodiment provides a double-layer staggered inter-supporting plate and column system for timber structure, including upper and lower staggered inter-supporting plates 1, central web members 2, supporting hollow trusses 3, and supporting timber columns 4.

[0024] The staggered interlocking support plate consists of upper and lower interlocking grid plates, both formed by vertically overlapping unit members I1-1 and II1-2 of similar specifications and dimensions at their intersections using a tenon-and-mortise method, creating a plate-type load-bearing unit capable of independently bearing vertical loads. The upper and lower interlocking grid plates are arranged in the same manner and are orthogonal in the horizontal direction, which mitigates potential defects in a single direction within each layer and improves the uniformity of the overall performance of the combined double-layer plate.

[0025] The central web member 2 is divided into vertical web member 2-1 and diagonal web member 2-3. The upper and lower planes support the grid plates and are connected by the vertical web member at the key intersection point with the through-through long screw 2-2.

[0026] The supporting hollow truss 3 includes an upper chord wooden beam 3-1, a lower chord wooden beam 3-2, and truss vertical web members 3-3. The upper chord wooden beam 3-1 is connected to the supporting wooden column 4 by a mortise and tenon joint, and the lower chord wooden beam 3-2 is connected to the supporting wooden column 4 by a straight tenon joint.

[0027] The unit member I1-1 and unit member II1-2 are two-span and three-span respectively. The two-span unit member I includes one central mortise and two end mortises, and the three-span unit member II includes two 1 / 3 mortises and two end mortises.

[0028] The vertical web member 2-1 has a circular hole along its longitudinal center for connecting the long screw 2-2. The diameter of the circular hole is slightly larger than the diameter of the screw. By changing the height of the vertical web member, the out-of-plane bearing capacity and deformation resistance of the double-layer mutual bearing plate can be effectively adjusted.

[0029] The diagonal web members 2-3 are alternately arranged between some of the vertical web members 2-1 to form a stable spatially interlocking and mutually supporting double-layer structural plate.

[0030] The through-bolt 2-2 passes through the vertical web bar and connects the upper and lower planar mutual support plates along the longitudinal hole to form a double-layer hollow web plate system; the through-bolt 2-2 is fastened with large washer bolts at the contact points with the upper and lower planar mutual support grid plate wooden rods to avoid insufficient local pressure on the wood.

[0031] The upper chord timber beam 3-1, lower chord timber beam 3-2, unit member I1-1 and unit member II1-2 all have rectangular cross sections, and their materials are engineered timber such as laminated veneer timber, veneer laminated lumber, parallel veneer laminated timber or laminated veneer laminated timber.

[0032] The cross-sections of the supporting wooden columns 4, truss vertical web members 3-3, and vertical web members 2-1 are all circular, and their materials are engineered wood such as laminated veneer lumber, veneer laminated timber, parallel veneer laminated timber, or laminated veneer laminated timber.

[0033] The internal forces of the interlocking support plates and their supporting rods are the sum of the forces distributed at each stage, and are calculated using the following formula: Assuming the forces acting on a typical rod element are as follows: Figure 7 And there are .

[0034] The initial force on the rod is denoted as Then, the force F1 after the other endpoints (connected at B and C) transmit a force to this element once can be expressed as:

[0035] Its coefficient matrix is ​​denoted as The above formula is Similarly, the second transmission to both ends of the rod element Force And so on: , Obviously, ||A||, then .

[0036]

[0037] in, I Is with A b Unit matrices of the same dimension.

[0038]

[0039] Each of them All are 4×4 matrices. (See attached image.) Figure 8 Considering that end D of cell 1 coincides with end C of cell 2, the corresponding columns of the coefficient matrix are swapped, and the columns and rows where all positions C are 0 after the swap are deleted. Other overlapping positions are also processed accordingly, resulting in the final coefficient matrix:

[0040] The internal forces of the basic unit can be obtained through To obtain the initial forces at each location, we only need to determine the forces acting on the system. Similarly, the coefficient matrix of a mutually supporting system composed of n mutually supporting basic units can be expressed as:

[0041] Where Au represents the cyclic force within the basic unit, and matrices B and C represent the forces distributed and transmitted between the basic units. Based on the force analysis, the cross-sectional dimensions of the components and the node construction are determined.

[0042] The through-bolt 2-2 can be made of stainless steel or alloy steel, or it can be a metal bolt.

[0043] The inclined web members 2-3 can be made of metal pipes or wooden rods. The ends of the web members are pre-connected with metal end plates with screw holes, which are fixed on site using wood screws.

[0044] During construction, the double-layer interlocking support plate components are prefabricated in the factory to support the hollow wooden truss and supporting wooden columns; the supporting wooden columns are erected, and necessary temporary support systems are set up; the lower chord wooden beams of the hollow truss are connected to the supporting wooden columns using straight tenon joints; the lower interlocking support plate is erected, and the tenon joints of unit members I and II at the cross-support positions are completed in sequence, as well as the joints of the members with the lower chord of the hollow truss; the vertical web members and upper chords of the hollow truss are erected, and the upper chord wooden beams are connected to the supporting wooden columns using mortise and tenon joints; the lower interlocking support plate is used as a construction platform to overlap the upper interlocking support grid plate, and the erection method is the same as the lower plate member laying method, only orthogonal in the horizontal direction; vertical web members are erected between the upper and lower interlocking support plates and fixed by through-bolts and large washers; diagonal web members are set between some of the vertical web members, and the ends of the web members are pre-connected with metal end plates with screw holes, which are fixed on site with wood screws, ultimately forming a stable spatially staggered interlocking double-layer structural plate-column system.

[0045] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations of these embodiments within the scope of the principles and technical concept of this utility model still fall within the protection scope of this utility model.

Claims

1. A double-layered staggered mutually supporting wooden column system, characterized in that, It includes interlocking upper and lower support plates (1), central web members (2), supporting hollow trusses (3), and supporting wooden columns (4). The interlocking support plate (1) consists of upper and lower planar support grid plates, both of which are formed by unit member I (1-1) and unit member II (1-2) vertically overlapping in the plane at the cross support position using a tenon joint method, forming a plate-type load-bearing unit that can independently bear vertical loads; the upper and lower planar support grid plates are arranged in the same way, and the two are orthogonal in the horizontal direction; The middle web member (2) is divided into vertical web member (2-1) and diagonal web member (2-3). The upper and lower interlocking support plates (1) are connected by a through-bolt (2-2) at the intersection of the vertical web member (2-1). The supporting hollow truss (3) includes an upper chord wooden beam (3-1), a lower chord wooden beam (3-2), and truss vertical web members (3-3). The upper chord wooden beam (3-1) is connected to the supporting wooden column (4) by a mortise and tenon joint, and the lower chord wooden beam (3-2) is connected to the supporting wooden column (4) by a straight tenon joint.

2. The double-layered staggered mutually supporting slab-column system of a wooden structure according to claim 1, characterized in that, The unit member I (1-1) and unit member II (1-2) are two spans and three spans, respectively. The two-span unit member I (1-1) includes one central mortise and two end mortises, and the three-span unit member II (1-2) includes two 1 / 3 mortises and two end mortises.

3. The double-layer staggered inter-supporting slab-column system of a wooden structure according to claim 1, characterized in that, The vertical web member (2-1) has a circular hole along its longitudinal center for connecting the long screw (2-2). The diameter of the circular hole is slightly larger than the diameter of the screw. The out-of-plane bearing capacity and deformation resistance of the double-layer mutual bearing plate can be adjusted by changing the height of the vertical web member (2-1).

4. The double-layered staggered mutually supporting slab-column system of a wooden structure according to claim 1, characterized in that, The diagonal web members (2-3) are alternately arranged between some of the vertical web members (2-1) to form a stable spatially interlocking and mutually supporting double-layer structural plate.

5. A double-layer staggered interlocking slab-column system for timber structure according to claim 3, characterized in that, The through-bolt (2-2) passes through the vertical web bar (2-1) and connects the upper and lower planar inter-support grid plates along the longitudinal hole to form a double-layer hollow web plate system; the through-bolt (2-2) is fastened to the wooden rods of the upper and lower planar inter-support grid plates with large washer bolts at the contact points.

6. A double-layered staggered interlocking slab-column system for timber structure according to claim 1, characterized in that, The cross sections of the upper chord timber beam (3-1), lower chord timber beam (3-2), unit member I (1-1), and unit member II (1-2) are all rectangular, and their materials are laminated veneer timber, veneer laminated timber, parallel veneer laminated timber, or laminated veneer laminated timber.

7. A double-layer staggered interlocking slab-column system for timber structure according to claim 1, characterized in that, The cross-sections of the supporting wooden columns (4), truss vertical web members (3-3), and vertical web members (2-1) are all circular, and their materials are plywood laminated timber, veneer laminated timber, parallel wood veneer laminated timber, or laminated wood veneer laminated timber.

8. A double-layered staggered mutually supporting slab-column system for timber structure according to claim 1, characterized in that, The through-hole long screw (2-2) is made of stainless steel or alloy steel.

9. A double-layer staggered interlocking slab-column system for timber structure according to claim 1, characterized in that, The inclined web members (2-3) are made of metal tubes or wooden rods, and the ends of the web members are pre-connected with metal end plates with screw holes, which are fixed with wood screws.

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