Wood structure double-layer staggered and mutually-supported plate column system and construction method thereof

Abstract

The invention discloses a wood structure double-layer staggered mutual-bearing plate-column system and a construction method thereof. The wood structure double-layer staggered mutual-bearing plate-column system is composed of upper and lower mutual-bearing plates, web members, supporting trusses and stand columns. The upper and lower mutual-supporting plates are formed by vertically overlapping rod pieces with similar specifications at the crossed mutual-supporting positions through buckling tenons, and the rod pieces of the upper and lower mutual-supporting plates are consistent in arrangement mode and are orthogonal in the horizontal plane. The web members are divided into vertical web members and diagonal web members, the upper plate and the lower plate pass through the vertical web members at main mutual bearing points, opposite-penetrating long screws are used for tying, the height of the web members is changed, and the out-of-plane stress performance of the mutual bearing plate can be adjusted; diagonal web members are arranged between the vertical web members at intervals; the hollow trusses are supported on the four sides of the mutual bearing plate, upper chords of the trusses are connected with the stand columns through head hooping tenons, lower chords are connected through tenons, and a double-layer staggered mutual bearing plate-column system is formed. According to the invention, the component types are few, the installation is convenient, the industrial production is convenient, more materials are saved, the economy is realized, the problems of insufficient external bearing capacity and rigidity of the plane mutual bearing surface are effectively improved, and the stress performance is good.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of building structure engineering, and particularly relates to a wood structure double-layer staggered mutual support slab-column system and a construction method thereof. BACKGROUND

[0002] With the ecological properties of low carbon and environmental protection, the performance advantages of durability and the construction convenience of easy processing, wood structure occupies a unique position in the field of building. The building space constructed by wood structure not only can convey a quiet and peaceful atmosphere, but also can create a comfortable experience close to nature for the occupants. Now, wood structure engineering is concerned all over the world and frequently appears in some designs and constructions. Mutual support structure is a kind of truss structure characterized by mutual lapping of members, and the members support each other, and each member supports the adjacent member and is supported by another adjacent member, and has the characteristics of simple connection structure and rich rhythm beauty. The mutual support structure realizes the simple unification of the form of the member and the form of the node through the lapping mode of two-by-two, and the simple and concise construction design also makes the on-site assembly more simple and easy, and the mutual support structure is widely concerned in prefabricated buildings.

[0003] However, the single-layer mutual support structure has small strength and rigidity, weak resistance to seismic load and low safety reserve, and cannot realize large span, and it is urgent to improve the strength and rigidity of the mutual support structure and improve the building span of the mutual support structure. SUMMARY

[0004] The application aims at the above-mentioned technical problems, and provides a wood structure double-layer staggered mutual support slab-column system and a construction method thereof. The double-layer plane mutual support structures are connected through vertical web members, inclined web members and long screw rods, and the out-of-plane bearing capacity and deformation resistance of the double-layer slab structure can be effectively controlled by adjusting the height of the web member. Meanwhile, the supports of the double-layer mutual support slab structure adopt the Chinese traditional wood structure connection mode of the mortise and tenon joint, and the use of metal connecting pieces is reduced, and the structure assembly is more convenient and efficient.

[0005] The application aims at the above-mentioned technical problems, and provides a wood structure double-layer staggered mutual support slab-column system and a construction method thereof. The double-layer plane mutual support structures are connected through vertical web members, inclined web members and long screw rods, and the out-of-plane bearing capacity and deformation resistance of the double-layer slab structure can be effectively controlled by adjusting the height of the web member. Meanwhile, the supports of the double-layer mutual support slab structure adopt the Chinese traditional wood structure connection mode of the mortise and tenon joint, and the use of metal connecting pieces is reduced, and the structure assembly is more convenient and efficient. The application aims at the above-mentioned technical problems, and provides a wood structure double-layer staggered mutual support slab-column system and a construction method thereof. The double-layer plane mutual support structures are connected through vertical web members, inclined web members and long screw rods, and the out-of-plane bearing capacity and deformation resistance of the double-layer slab structure can be effectively controlled by adjusting the height of the web member. Meanwhile, the supports of the double-layer mutual support slab structure adopt the Chinese traditional wood structure connection mode of the mortise and tenon joint, and the use of metal connecting pieces is reduced, and the structure assembly is more convenient and efficient. The upper and lower staggered mutual support slabs are divided into upper and lower plane mutual support grid slabs, and each is formed by vertically lapping in the plane by means of a mortise and tenon joint at the cross mutual support position of a unit member I and a unit member II, to form a slab force unit capable of independently bearing vertical load. The upper and lower plane mutual support grid slabs have consistent arrangement modes, and are orthogonal in the horizontal direction, so that the defects possibly existing in a single direction of each layer of slabs can be weakened, and the uniformity of the overall performance of the double-layer slabs after combination can be improved. The middle abdominal rod is divided into vertical abdominal rods and inclined abdominal rods, and the upper and lower plane mutual support grid plates are connected by vertical abdominal rods at the intersection points. The support open-web truss comprises upper chord wooden beams, lower chord wooden beams and truss vertical abdominal rods, wherein the upper chord wooden beams are connected with the support wooden columns by means of hoop tenon joints, and the lower chord wooden beams are connected with the support wooden columns by means of straight tenon joints.

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

[0007] Preferably, the vertical abdominal rod is provided with a circular hole along the longitudinal center for passing through the long screw rod, and the diameter of the circular hole is slightly larger than the diameter of the screw rod; the out-of-plane bearing capacity and the anti-deformation capacity of the double-layer mutual support plate can be effectively adjusted by changing the height of the vertical abdominal rod.

[0008] Preferably, the inclined abdominal rods are alternately arranged between part of the vertical abdominal rods to form a stable space staggered mutual support double-layer structure plate.

[0009] Preferably, the long screw rod passing through the vertical abdominal rod along the longitudinal hole pulls the upper-layer plane mutual support grid plate and the lower-layer plane mutual support grid plate to form a double-layer open-web plate system; the contact part between the long screw rod and the wooden rod member of the upper-layer and lower-layer plane mutual support grid plate is fastened by a large gasket bolt to avoid insufficient local pressure bearing of the wood.

[0010] Preferably, the cross sections of the upper chord wooden beam, the lower chord wooden beam, the unit rod member I and the unit rod member II are all rectangular, and the materials thereof are engineering wood such as laminated wood, laminated veneer lumber, parallel strand lumber or laminated strand lumber.

[0011] Preferably, the cross sections of the support wooden column, the truss vertical abdominal rod and the vertical abdominal rod are all circular, and the materials thereof are engineering wood such as laminated wood, laminated veneer lumber, parallel strand lumber or laminated strand lumber.

[0012] Preferably, the wood structure double-layer staggered mutual support plate column system has the following characteristics: the material of the long screw rod can be stainless steel or alloy steel, or a metal bolt can be used.

[0013] Preferably, the wood structure double-layer staggered mutual support plate column system has the following characteristics: the material of the inclined abdominal rod can be a metal pipe or a wooden rod member, and a metal end plate with a screw hole is pre-connected at the end of the abdominal rod, and a wooden screw is used for fixing on site.

[0014] The construction method of the wood structure double-layer staggered mutual support plate column system comprises the following steps: S1: prefabricate unit bar I, unit bar II, vertical web member, inclined web member, support wood structure open-web truss and support wood column in the factory, and process matching tenon and mortise at corresponding positions according to the connection and assembly requirements of each component; S2: build the support wood column and set up the temporary support system; S3: connect the open-web truss lower chord wood beam and the support wood column by using straight tenon connection mode; S4: build the lower layer plane mutual support grid plate, and sequentially complete the dowel joint of unit bar I and unit bar II at the cross mutual support position and the joint of the bar and the open-web truss lower chord; S5: build the vertical web member and the upper chord of the open-web truss, and connect the upper chord wood beam and the support wood column by using the hoop tenon; S6: use the lower layer plane mutual support grid plate as the construction platform, connect the upper layer plane mutual support grid plate, and the building mode is consistent with the laying mode of the lower layer plate bar, only in the horizontal direction orthogonal; S7: build the vertical web member between the upper and lower plane mutual support grid plates, and fix by using the long screw rod and large gasket; S8: set the inclined web member between part of the vertical web members, the end of the web member is connected with a metal end plate with a screw hole in advance, and is fixed by using the wood screw on site, and finally a stable space staggered mutual support double-layer structure plate column system is formed.

[0015] The traditional Chinese mortise and tenon joint, modern engineered wood, mutual support structure system and space flat grid structure are organically combined in the application, the structure is formed by mutual support and joint of a large number of small size components, large hoisting equipment and professional installation technology are not needed, simple training can quickly assemble, and the application has high popularization value in small and medium span buildings such as residential buildings, product exhibition halls, urban communities and rural activity centers.

[0016] The application has the following beneficial effects: 1. The structural performance is greatly improved. The traditional plane mutual support structure has the problem of one-way stress, and the vertical compression performance is usually better than the tensile performance caused by the uplift force. In order to solve the problem of the uplift force, a complex node connection is usually needed, which weakens the components at the node and brings inconvenience to installation. The two-layer simple mutual support structure is connected by the web member in the application, a double-layer mutual support floor is formed, the structure is simple, the connection is convenient, and the overall performance of the structure is greatly improved.

[0017] 2. The application scope is expanded. The double-layer staggered mutual support plate system adopts the upper and lower mutual support mode to solve the problem of one-way stress of the plane grid, and can be widely used in various geometric shape building structures, such as cylindrical surface, spherical surface and free-form surface, and can meet larger building span.

[0018] 3. Construction efficiency is improved. The system has single component, simple node structure, is convenient for industrialized production and popularization. The traditional mortise and tenon node of ancient China, modern engineered wood, mutual support system and spatial plane grid structure are effectively combined, the spatial mutual support of small size component is realized, and heavy lifting equipment is not needed during construction, and rapid assembly can be realized.

[0019] 4. Material advantage is fully exerted. Hollow rod members are used in the system, metal pull rods are passed through the middle, and the upper and lower plates are fixed by external wood members using bolt large gaskets. The abdominal rod is stressed by the abdominal rod under compression, and the metal pull rod is stressed under tension, and the performance advantages of different materials can be exerted.

[0020] 5. The node structure of building and structure is coordinated. The cross rod top is flush by using buckling tenon, that is, the requirements of continuous rod are met, and the structural layer height is reduced, which is more conducive to improving the building net height; the hoop tenon is used to solve the connection difficulty of the intersection of column head multiple wood beams, and the intersection components are constrained to each other, and the stability of the components is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole diagram of the wood structure double-layer staggered mutual support slab column system of the application; Figure 2 It is a support wood stand column node schematic diagram of the wood structure double-layer staggered mutual support slab column system of the application; Figure 3 It is a schematic diagram of the peripheral support hollow truss structure of the wood structure double-layer staggered mutual support slab column system of the application; Figure 4 It is a schematic diagram of the single-layer plane mutual support slab structure of the wood structure double-layer staggered mutual support slab column system of the application; Figure 5 It is a schematic diagram of the upper and lower staggered mutual support slab connection mode of the wood structure double-layer staggered mutual support slab column system of the application; Figure 6 It is a schematic diagram of the single-layer mutual support plane slab assembly mode of the wood structure double-layer staggered mutual support slab column system of the application; Figure 7 It is a stress diagram of the single mutual support rod member of the wood structure double-layer staggered mutual support slab column system of the application; Figure 8 It is a schematic diagram of the wood structure double-layer staggered mutual support slab column system of the application; Figure 9 It is a schematic diagram of the wood structure double-layer staggered mutual support slab column system of the application; 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 Figures 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 long screw 2-2 is arranged to pass through the vertical web and pull the upper and lower plane mutual support plates together along the longitudinal hole, forming a double-layered space truss system; the long screw 2-2 is fastened by large gasket bolts at the contact position with the upper and lower plane mutual support grid plate wood members, so as to avoid insufficient local pressure bearing of the wood.

[0031] The upper chord wood beam 3-1, the lower chord wood beam 3-2, the unit member I 1-1 and the unit member II 1-2 are all rectangular in section, and are made of laminated wood, laminated veneer lumber, parallel wood glue or laminated wood.

[0032] The support wood column 4, the truss vertical web 3-3 and the vertical web 2-1 are all circular in section, and are made of laminated wood, laminated veneer lumber, parallel wood glue or laminated wood.

[0033] The upper and lower staggered mutual support plates, the mutual support rod internal force is the sum of the distributed forces, and is calculated according to the following formula: Suppose that the general rod unit is stressed as shown in the accompanying drawings Figure 7 , and , then .

[0034] The initial stress of the rod is denoted as , and the stress F1 of the rod after the other end points (B, C) are connected to the unit and transmit a force once is represented as:

[0035] Denote the coefficient matrix as , and the above formula is . Similarly, after the second time of transmitting the rod unit to the two ends, the stress . In this way, there are: , Obviously, ||A||, then .

[0036]

[0037] wherein, I is a unit matrix with the same dimension as A b .

[0038]

[0039] wherein each is a 4x4 matrix. As shown in the accompanying drawings Figure 8 ​, considering that the end D of the first unit coincides with the end C of the second unit, the corresponding position columns of the coefficient matrix are exchanged, and the columns and rows with all 0 in the C position after the exchange are deleted, and other coinciding positions are processed accordingly, and the final coefficient matrix is obtained as follows:

[0040] The internal force of the basic unit can be obtained by Only the force at each position in the initial condition needs to be determined. Similarly, the assembled and processed coefficient matrix of the mutual support system composed of n mutual support basic units can be represented as:

[0041] Wherein, Au is the internal force of the basic unit, and B and C matrices are the forces dispersed and transmitted between the basic units. According to the force analysis, the cross-sectional size of the component and the node structure are determined.

[0042] The material of the long screw rod 2-2 can be stainless steel or alloy steel, etc., and a metal bolt can also be used.

[0043] The material of the inclined web member 2-3 can be a metal pipe or a wooden rod member, and a metal end plate with a screw hole is pre-connected at the end of the web member, which is fixed on site by using a wooden screw.

[0044] During construction, the double-layer mutual support plate components are prefabricated and processed in the factory, and the support wood structure open-web truss and support wood columns are supported; the support wood columns are erected, and the necessary temporary support system is set; the open-web truss lower chord wood beam is connected with the support wood columns by using straight tenon connection; the lower-layer mutual support plate is erected, and the cross tenon lap joint of unit rod member I and unit rod member II at the cross mutual support position is completed in sequence, and the lap joint of the rod member and the open-web truss lower chord rod is completed; the vertical web member of the open-web truss and the upper chord rod are erected, and the upper chord wood beam is connected with the support wood column by using a hoop tenon; the lower-layer mutual support plate is used as a construction platform, the upper-layer mutual support grid plate is lapped, and the erection method is consistent with the laying method of the lower-layer plate rod, and only the horizontal direction is orthogonal; the vertical web member is erected between the upper-layer and lower-layer mutual support plates, and is fixed by using the long screw rod and large gasket; the inclined web member is arranged between part of the vertical web members, the metal end plate with a screw hole is pre-connected at the end of the web member, and the wooden screw is used for fixing on site, and finally a stable space staggered mutual support double-layer structure plate column system is formed.

[0045] The embodiments of the present application are described in detail in combination with the drawings, but the present application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and deformations of the embodiments within the scope of the principles and technical ideas of the present application still fall within the protection scope of the present application.

Claims

1. A timber structural two-story staggered inter-braced panel column system, characterized by, It comprises staggered mutual support plates (1), middle web members (2), support open-web trusses (3) and support wooden columns (4); The staggered mutual support plates (1) are divided into upper and lower plane mutual support grid plates, which are both formed by unit members I (1-1) and unit members II (1-2) vertically connected in plane by dowel joint at the mutual support position, and form plate-type force units capable of independently bearing vertical load; the upper and lower plane mutual support grid plates have the same arrangement mode and are orthogonal in horizontal direction; The middle web members (2) are divided into vertical web members (2-1) and inclined web members (2-3), and the upper and lower staggered mutual support plates (1) are connected by the vertical web members (2-1) at the intersection point through long screw rods (2-2) penetrating through. The support open-web trusses (3) comprise upper chord wooden beams (3-1), lower chord wooden beams (3-2) and truss vertical web members (3-3), wherein the upper chord wooden beams (3-1) and the support wooden columns (4) are connected by hook dowels, and the lower chord wooden beams (3-2) and the support wooden columns (4) are connected by straight dowels.

2. A timber structure double-story staggered inter-braced panel column system according to claim 1, wherein, The unit members I (1-1) and the unit members II (1-2) are two-span and three-span respectively, wherein the two-span unit members I (1-1) comprise one middle mortise and two end mortises, and the three-span unit members II (1-2) comprise two 1 / 3 mortises and two end mortises.

3. A timber structure dual interlocking panel wall system according to claim 1, wherein, The vertical web members (2-1) are provided with circular holes along the longitudinal center for penetrating the long screw rods (2-2), and the diameter of the circular holes is slightly larger than the diameter of the screw rods; the out-of-plane bearing capacity and deformation resistance of the double-layer mutual support plates can be adjusted by changing the height of the vertical web members (2-1).

4. A timber structure dual interlocking panel wall system according to claim 1, wherein, The inclined web members (2-3) are alternately arranged between some vertical web members (2-1) to form a stable space staggered mutual support double-layer structure plate.

5. A timber structure double-story staggered inter-braced panel column system according to claim 3, wherein, The long screw rods (2-2) penetrate through the vertical web members (2-1) along the longitudinal holes to connect the upper and lower plane mutual support grid plates to form a double-layer open-web plate system; the contact positions between the long screw rods (2-2) and the wooden members of the upper and lower plane mutual support grid plates are fastened by large gasket bolts.

6. A timber structure dual interlocking panel wall system according to claim 1, wherein, The cross sections of the upper chord wooden beams (3-1), the lower chord wooden beams (3-2), the unit members I (1-1) and the unit members II (1-2) are all rectangular, and the materials thereof are laminated wood, laminated veneer lumber, parallel strand lumber or laminated strand lumber.

7. A timber structure dual interlocking panel wall system according to claim 1, wherein, The cross sections of the support wooden columns (4), the truss vertical web members (3-3) and the vertical web members (2-1) are all circular, and the materials thereof are laminated wood, laminated veneer lumber, parallel strand lumber or laminated strand lumber.

8. A timber double-story staggered inter-braced panel column system according to claim 1, wherein, The material of the long screw rods (2-2) is stainless steel or alloy steel.

9. A timber double-story staggered inter-braced panel column system according to claim 1, wherein, The material of the inclined web members (2-3) is metal pipe or wooden member, and metal end plates with screw holes are pre-connected at the ends of the web members, which are fixed by wooden screws.

10. The method of construction of a timber structural double-storied staggered inter-braced panel column system as claimed in claim 1, 2, 3, 4, 5, 6, 7, 8 or 9 wherein, It comprises the following steps: S1: prefabricating and processing unit members I, unit members II, vertical web members, inclined web members, support wooden structure open-web trusses and support wooden columns in a factory, and processing matching dowels and mortises at corresponding positions according to the connection and assembly requirements of the components; S2: building support wooden columns and setting up a temporary support system; S3: The straight tenon connection method is adopted to connect the lower chord wooden beam of the open-web truss and the support wooden column; S4: The lower layer of the plane mutual support grid plate is built, and the mortise and tenon joint of unit member I and unit member II at the cross mutual support position is completed in sequence, and the joint of the member and the lower chord of the open-web truss is completed; S5: The vertical web member and the upper chord of the open-web truss are built, and the upper chord wooden beam and the support wooden column are connected by the hoop tenon; S6: The lower layer of the plane mutual support grid plate is used as the construction platform, the upper layer of the plane mutual support grid plate is jointed, the building method is consistent with the laying method of the lower layer of the plate and the member, and only the horizontal direction is orthogonal; S7: The vertical web member is built between the upper and lower plane mutual support grid plates, and is fixed by the long screw rod and the large gasket; S8: The inclined web member is arranged between part of the vertical web members, the end of the web member is connected with the metal end plate with a screw hole in advance, the wooden screw is used for fixing on site, and finally the stable space staggered mutual support double-layer structure plate column system is formed.

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