Wood structural member splicing joint and splicing method

Abstract

The present application relates to the field of building structure, disclose a kind of wood structure component splicing node and splicing method. Connection hole is provided on the end face of two adjacent wood structure components, connecting steel bar is placed in the connection hole, then steel sleeve is set on the outside of the two wood structure components;And connecting steel bar is provided with threaded hole matched with connecting bolt, and steel sleeve and wood structure component are provided with through hole matched with threaded hole, connecting steel bar, wood structure component and steel sleeve are connected into a whole by connecting bolt through the through hole and threaded hole. The radial direction of the two wood structure components is limited by connecting steel bar and steel sleeve, and the axial direction of the two wood structure components is limited by the cooperation of connecting bolt and threaded hole. The connection of the two wood structure components is changed into the connection between connecting steel bar and connecting sleeve, and the strength of the steel parts at the splicing site is much higher than that of wood, which can ensure the strength of the splicing node.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building structures, in particular to a wood structure component splicing joint and a splicing method. BACKGROUND

[0002] Wood structure buildings are loved by people because of their easy construction, environmental friendliness, winter warmth, summer coolness, energy saving and environmental protection, low carbon and green, and close to nature. In addition, with the continuous introduction of China's green building policy, wood structure is increasingly prominent in the field of building structures because of its green and environmentally friendly material and renewable resources, and wood structure buildings are more and more widely used. Since wood structure components are often processed from logs, their size is limited, and when used in house construction, the length of the components often does not meet the requirements, so the components need to be spliced, but wood components cannot be directly spliced like steel components, and the shear strength in the grain direction is low, so it is difficult to ensure the strength of the joint by general splicing methods. SUMMARY

[0003] In view of the above defects in the prior art, a wood structure component splicing joint and a splicing method are provided to realize component splicing and lengthening while ensuring the strength of the joint.

[0004] The technical solution adopted by the present application to solve the above technical problems is:

[0005] A wood structure component splicing joint, characterized in that it comprises

[0006] Two adjacent wood structure components, the cross section of the wood structure component is circular, and connecting holes are arranged on the adjacent end faces of the two adjacent wood structure components along the length direction of the wood structure, the two connecting holes have the same cross section size and the same position at the end face of the wood structure component;

[0007] A connecting steel rod, the cross section size of the connecting steel rod matches the cross section size of the connecting hole, and the two ends of the connecting steel rod are placed in the connecting holes of the two adjacent wood structure components; a plurality of threaded holes are arranged on the connecting steel rod at intervals, and a first through hole matching the threaded hole is arranged on the wood structure component;

[0008] A steel sleeve, the inner diameter of the steel sleeve matches the outer diameter size of the wood structure component, the steel sleeve is sleeved on the connected part of the wood structure component, and a second through hole matching the first through hole is arranged on the steel sleeve;

[0009] A connecting bolt, the connecting bolt passes through the second through hole and the first through hole and is fixed on the threaded hole.

[0010] According to the above technical solution, the length of the connecting steel rod is consistent with the length of the connecting holes of the two wood structure components; after the connecting steel rod is placed in the connecting holes, the end faces of the two wood structure components are in close contact.

[0011] According to the technical scheme, the connecting steel rod adopts a circular section, the diameter of the connecting hole is 1mm-2mm larger than the diameter of the connecting steel rod, and the shear bearing capacity of the connecting steel rod is not less than the shear bearing capacity of the section of the wood structure component; the axis of the connecting hole coincides with the axis of the wood structure component.

[0012] According to the technical scheme, the thickness of the steel sleeve is determined according to the bearing capacity of the wood structure component, and the tensile and bending strengths of the steel sleeve are ensured to be not less than the tensile and bending strengths of the wood component.

[0013] According to the technical scheme, the threaded holes are divided into several groups, each group of threaded holes is arranged on the connecting steel rod along the length direction, and different groups of threaded holes are arranged on the connecting steel rod in a circumferential interval; the diameter and number of the connecting bolts are determined according to the principle that the shear strength is not less than the tensile strength of the wood component; n=N / Nv, wherein n is the total number of bolts on the single wood structure component, N is the tensile bearing capacity of the wood structure component, and Nv is the shear bearing capacity of a single bolt.

[0014] According to the technical scheme, the depth of the threaded hole is 3mm-5mm; the diameters of the first through hole and the second through hole are both 1mm larger than the rod diameter of the connecting bolt.

[0015] According to the technical scheme, the injection hole, the observation hole and the structural glue are further included, the injection hole is arranged at the inner side end of the connecting hole of one wood structure component, the observation hole is arranged at the inner side end of the connecting hole of the other wood structure component, the diameters of the injection hole and the observation hole are 3mm-5mm; the structural glue is injected between the inner wall of the connecting hole and the outer wall of the connecting steel rod through the injection hole, and the structural glue is coated on the connecting bolt.

[0016] According to the technical scheme, the first through hole and the second through hole are replaced by the same threaded hole as the connecting steel rod.

[0017] A splicing method of a wood structure component splicing joint, characterized in that the method comprises the following steps:

[0018] S1: determining the diameter of the connecting steel rod, the diameter and thickness of the steel sleeve, and the diameter and number of the connecting bolt according to the material strength and section size of the connected wood structure component to meet the bearing capacity requirement.

[0019] S2: according to the selected connecting rod, a circular hole with a certain depth is arranged on the wood structure component as a connecting hole;

[0020] S3: according to the design requirement, threaded holes are arranged on the connecting steel rod, and through holes matching the positions and sizes of the threaded holes are arranged on the steel sleeve and the wood structure component;

[0021] S4: insert the connecting steel bar into the connecting hole of the wood structural member on one side, and set the steel sleeve on the outer wall, align the through hole of the steel sleeve and the wood structural member and the threaded hole of the connecting steel bar; coat the connecting bolt with structural glue, and screw it into the threaded hole after passing through the through hole;

[0022] S5: place the wood structural member on the other side in the area between the connecting steel bar and the steel sleeve, and align the through hole of the steel sleeve and the wood structural member and the threaded hole of the connecting steel bar; coat the connecting bolt with structural glue, and screw it into the threaded hole after passing through the through hole;

[0023] S6: after all the bolts are screwed into the connecting steel bar, inject structural glue through the glue injection hole until the structural glue overflows from the observation hole, and the node splicing is completed after the structural glue solidifies.

[0024] The present application has the following beneficial effects:

[0025] 1. A connecting hole is provided on the end face of two adjacent wood structural members, a connecting steel bar is placed in the connecting hole, and then a steel sleeve is provided on the outside of the two wood structural members; a threaded hole matched with the connecting bolt is provided on the connecting steel bar, and a through hole (referring to the first through hole and the second through hole) matched with the threaded hole is provided on the steel sleeve and the wood structural member, the connecting steel bar, the wood structural member and the steel sleeve are connected into a whole through the connecting bolt passing through the above-mentioned through hole and threaded hole. Based on the above measures, the radial direction of the two wood structural members is limited by the connecting steel bar and the steel sleeve, and the axial direction of the two wood structural members is limited by the cooperation of the connecting bolt and the threaded hole. According to the design of the connecting steel bar, the steel sleeve, and the connecting bolt and the threaded hole, the connection of the two wood structural members is changed into the connection between the connecting steel bar and the connecting sleeve, and the splicing parts are all steel, which has much higher strength than wood, and can ensure the strength of the splicing node. In addition, the node processing can be carried out in the factory, and the processing precision and quality can be guaranteed.

[0026] 2. The connecting hole is filled with structural glue, which strengthens the wood structural member around the connecting hole, and makes the connecting steel bar directly contact with the wood structural member around the connecting hole, avoids the node loosening, and ensures the direct force transmission of the node. The connecting bolt is coated with structural glue, which makes the connecting bolt tightly contact with the hole wall of the wood structural member, avoids the node loosening, and improves the shear bearing capacity of the node. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of the embodiment provided by the present application;

[0028] Figure 2 is Figure 1 the sectional view of A-A in

[0029] Figure 3 is Figure 1A sectional view of the middle B-B;

[0030] Figure 4 is Figure 1 A sectional view of the middle C-C;

[0031] In the figure, 1, wood structure member; 2, connecting hole; 3, connecting steel bar; 4, steel sleeve; 5, connecting bolt; 6, structural adhesive; 7, glue injection hole; 8, observation hole. DETAILED DESCRIPTION

[0032] The application will be described in detail below with reference to the accompanying drawings and examples.

[0033] Referring to Figures 1-4 The application provides a wood structure member splicing joint.

[0034] Example 1

[0035] comprising

[0036] Two adjacent wood structure members 1, the cross section of the wood structure member is circular, connecting holes 2 are arranged on the adjacent end faces of the two adjacent wood structure members along the length direction of the wood structure, the two connecting holes have the same cross section size and the same position at the end face of the wood structure member;

[0037] A connecting steel bar 3, the cross section size of the connecting steel bar matches the cross section size of the connecting hole, and the two ends of the connecting steel bar are arranged in the connecting holes of the two adjacent wood structure members; a plurality of threaded holes are arranged on the connecting steel bar at intervals, and a first through hole matching the threaded hole is arranged on the wood structure member;

[0038] A steel sleeve 4, the inner diameter of the steel sleeve matches the outer diameter size of the wood structure member, the steel sleeve is sleeved on the connected position of the wood structure member, and a second through hole matching the first through hole is arranged on the steel sleeve;

[0039] A connecting bolt 5, the connecting bolt passes through the second through hole and the first through hole and is fixed on the threaded hole.

[0040] In the embodiment, the end faces of the two adjacent wood structural members are provided with connecting holes, the connecting steel rod is arranged in the connecting holes, and then the steel sleeve is arranged outside the two wood structural members; the connecting steel rod is provided with a threaded hole matched with the connecting bolt, and the steel sleeve and the wood structural member are provided with through holes (first and second through holes) matched with the threaded hole, the connecting steel rod, the wood structural member and the steel sleeve are connected into an integrated whole by the connecting bolt penetrating through the through holes and the threaded hole. Based on the above measures, the radial direction of the two wood structural members is limited by the connecting steel rod and the steel sleeve, and the axial direction of the two wood structural members is limited by the cooperation of the connecting bolt and the threaded hole. According to the design of the connecting steel rod, the steel sleeve, and the connecting bolt and the threaded hole, the connection of the two wood structural members is changed into the connection between the connecting steel rod and the connecting sleeve, and the parts at the splicing position are all steel materials, which have a strength much higher than that of wood and can ensure the strength of the splicing joint. In addition, the joint processing can be carried out in the factory, and the processing precision and quality can be ensured.

[0041] Embodiment 2

[0042] The structure and principle of embodiment 2 are close to those of embodiment 1, and the difference lies in that the length of the connecting steel rod is consistent with the length of the connecting hole of the two wood structural members, and the end faces of the two wood structural members are in close contact after the connecting steel rod is arranged in the connecting hole. In some embodiments, the length of the connecting steel rod is less than the length of the connecting hole of the two wood structural members, which is also within the protection scope of the embodiment. Only when the lengths are consistent, the installation is convenient and the connection strength is better.

[0043] Embodiment 3

[0044] The structure and principle of embodiment 3 are close to those of embodiment 1, and the difference lies in that the connecting steel rod adopts a circular cross section, the diameter of the connecting hole is 1mm-2mm larger than the diameter of the connecting steel rod (for facilitating the insertion of the connecting steel rod into the connecting hole), the shear bearing capacity of the connecting steel rod is not less than the shear bearing capacity of the cross section of the wood structural member, and the axis of the connecting hole coincides with the axis of the wood structural member. In some embodiments, the connecting steel rod can also adopt a rectangular structure or other shapes, but the circular cross section structure facilitates the processing of the connecting hole and the threaded hole. In addition, when the axis of the connecting hole coincides with the axis of the wood structural member, the shear strength of each part is the same. Of course, the axis of the connecting hole and the axis of the wood structural member do not coincide, which is also within the protection scope of the embodiment.

[0045] Embodiment 4

[0046] The structure and principle of embodiment 4 are close to those of embodiment 3, and the difference lies in that the thickness of the steel sleeve is determined according to the bearing capacity of the wood structural member, and the tensile and bending strengths of the steel sleeve are not less than those of the wood member.

[0047] Embodiment 5

[0048] The structure and principle of Embodiment 5 are similar to those of Embodiment 4, except that a preferred arrangement of connecting bolts is given, and the threaded holes on the connecting steel bar are arranged in the same way as the connecting bolts.

[0049] Specifically, the threaded holes are divided into groups, and each group of threaded holes is arranged along the length direction on the connecting steel bar, and different groups of threaded holes are arranged at intervals in the circumferential direction on the connecting steel bar; the diameter and number of the connecting bolts are determined according to the principle that the shear strength is not less than the tensile strength of the wood member: n = N / Nv, wherein n is the total number of bolts on one side of the wood structure member, N is the tensile bearing capacity of the wood structure member, and Nv is the shear bearing capacity of a single bolt. In this embodiment, the threaded holes are distributed on the outer wall of the connecting steel bar in the axial and circumferential directions, which facilitates the drilling of threaded holes on the wood structure member and the steel sleeve, and the placement of connecting bolts in the later stage, thereby achieving the purpose of reducing the installation difficulty.

[0050] Embodiment 6

[0051] The structure and principle of Embodiment 6 are similar to those of Embodiment 5, except that preferred structures of the threaded holes, the first through hole, and the second through hole are given. Specifically, the depth of the threaded hole is 3mm~5mm; the diameters of the first through hole and the second through hole are each 1mm larger than the rod diameter of the connecting bolt, thereby facilitating the connection of the connecting bolt.

[0052] Embodiment 7

[0053] The structure and principle of Embodiment 7 are similar to those of Embodiment 1, except that structural glue 6 and corresponding glue injection holes 7 and observation holes 8 are additionally provided to enhance the strength of the entire connecting joint.

[0054] Specifically, the glue injection hole is arranged at the inner side end of the connecting hole of one wood structure member, the observation hole is arranged at the inner side end of the connecting hole of the other wood structure member, and the diameters of the glue injection hole and the observation hole are 3mm~5mm; the structural glue is injected between the inner wall of the connecting hole and the outer wall of the connecting steel bar through the glue injection hole, and the connecting bolt is coated with the structural glue.

[0055] In this embodiment, the connecting hole is filled with structural glue, which strengthens the wood structure members around the connecting hole and enables the connecting steel bar to directly contact the wood structure members around the connecting hole, thereby avoiding joint loosening and ensuring direct force transmission of the joint. The connecting bolt is coated with structural glue, which enables the connecting bolt to tightly contact the hole wall of the wood structure member, thereby avoiding joint loosening and improving the shear bearing capacity of the joint.

[0056] Embodiment 8

[0057] The structure and principle of embodiment 8 are close to those of embodiment 1, and the difference is that the first through hole and the second through hole are replaced by the same threaded hole as the connecting steel rod based on embodiment 1 to realize the vertical limiting of the wood structural member.

[0058] In addition, the application also provides a splicing method of a wood structural member splicing joint, comprising the following steps:

[0059] S1: determining the connecting steel rod diameter, the steel sleeve diameter and thickness, and the diameter and number of connecting bolts that meet the bearing capacity requirement according to the material strength and cross-sectional size of the connected wood structural member.

[0060] S2: according to the selected connecting rod, a circular hole with a certain depth is opened on the wood structural member as a connecting hole, and the connecting hole is cleaned;

[0061] S3: according to the design requirements, a threaded hole is opened on the connecting steel rod, and a through hole is opened on the steel sleeve and the wood structural member which matches the position and size of the threaded hole;

[0062] S4: the connecting steel rod is placed in the connecting hole of the wood structural member on one side, the steel sleeve is sleeved on the outer wall, and the through holes of the steel sleeve and the wood structural member and the threaded hole of the connecting steel rod are aligned; structural glue is applied on the connecting bolt, and then the connecting bolt is screwed into the threaded hole through the through hole;

[0063] S5: the wood structural member on the other side is placed in the area between the connecting steel rod and the steel sleeve, and the through holes of the steel sleeve and the wood structural member and the threaded hole of the connecting steel rod are aligned; structural glue is applied on the connecting bolt, and then the connecting bolt is screwed into the threaded hole through the through hole;

[0064] S6: after all the connecting bolts are screwed into the connecting steel rod, structural glue is injected through the glue injection hole until the structural glue overflows from the observation hole, so as to ensure that the gap between the connecting steel rod and the wood structural member is filled with structural glue; after the structural glue solidifies, the joint splicing is completed.

[0065] The above is only a preferred embodiment of the application, and of course cannot limit the scope of the application, so equivalent changes made within the scope of the application patent application are still within the protection scope of the application.

Claims

1. A splicing joint for a wooden structural component, characterized in that: include Two adjacent wooden structural members, each with a circular cross-section, have connecting holes arranged along the length of the wooden structure on their adjacent end faces. The two connecting holes have the same cross-sectional dimensions and are located at the same position on the end faces of the wooden structural members. Connecting steel bars are provided, the cross-sectional dimensions of which match the cross-sectional dimensions of the connecting holes. The two ends of the connecting steel bars are placed in the connecting holes of two adjacent wooden structural members. Several threaded holes are provided at intervals on the connecting steel bars, and a first through hole matching the threaded holes is provided on the wooden structural members. A steel sleeve, the inner diameter of which matches the outer diameter of the wooden structural member, is fitted onto the connection of the wooden structural member, and a second through hole that matches the first through hole is provided on the steel sleeve. A connecting bolt passes through the second through hole and the first through hole and is fixed to the threaded hole; It also includes an injection hole, an observation hole, and structural adhesive. The injection hole is located on the inner end of the connection hole of one wooden structural member, and the observation hole is located on the inner end of the connection hole of another wooden structural member. The diameter of the injection hole and the observation hole is 3mm~5mm. Structural adhesive is injected between the inner wall of the connection hole and the outer wall of the connecting steel rod through the injection hole, and structural adhesive is applied to the connecting bolts.

2. The splicing node of the wooden structure component according to claim 1, characterized in that: The length of the connecting steel bar is the same as the length of the connecting hole of the two wooden structural members; after the connecting steel bar is placed in the connecting hole, the end faces of the two wooden structural members fit together.

3. The splicing node of the wooden structure component according to claim 1, characterized in that: The connecting steel bar has a circular cross-section, and the diameter of the connecting hole is 1mm to 2mm larger than the diameter of the connecting steel bar. The shear bearing capacity of the connecting steel bar is not less than the shear bearing capacity of the cross-section of the wooden structure member. The axis of the connecting hole coincides with the axis of the wooden structure member.

4. The splicing node of the wooden structure component according to claim 3, characterized in that: The thickness of the steel sleeve is determined based on the load-bearing capacity of the wooden structural components, and it is necessary to ensure that the tensile and bending strength of the steel sleeve is not lower than that of the wooden components.

5. The splicing node of the wooden structure component according to claim 4, characterized in that: The threaded holes are divided into several groups, with each group of threaded holes arranged along the length of the connecting steel bar. Different groups of threaded holes are arranged circumferentially on the connecting steel bar at intervals. The diameter and number of connecting bolts are determined according to the principle that the shear strength is not lower than the tensile strength of the wooden component: n=N / Nv, where n is the total number of bolts on a single side of the wooden structure, N is the tensile bearing capacity of the wooden structure, and Nv is the shear bearing capacity of a single bolt.

6. The splicing node of the wooden structure component according to claim 5, characterized in that: The depth of the threaded hole is 3mm~5mm; the diameter of both the first and second through holes is 1mm larger than the diameter of the connecting bolt.

7. The splicing node of the wooden structure component according to claim 1, characterized in that: Replace the first and second through holes with the same threaded holes as the connecting steel bars.

8. A method for splicing joints of timber structural components, characterized in that: Includes the following steps: S1: Determine the diameter of the connecting steel bar, the diameter and thickness of the steel sleeve, and the diameter and number of connecting bolts to meet the load-bearing requirements based on the material strength and cross-sectional dimensions of the connected wooden structural components; S2: Based on the selected connecting rod, make a matching circular hole of a certain depth on the wooden structural component as a connecting hole; S3: Threaded holes are made on the connecting steel bars according to the design requirements, and through holes matching the position and size of the threaded holes are made on the steel sleeve and wooden structural components; S4: Insert a connecting steel rod into the connecting hole of the wooden structural member on one side, and fit a steel sleeve on the outer wall, aligning the steel sleeve with the through hole of the wooden structural member and the threaded hole of the connecting steel rod; apply structural adhesive to the connecting bolt, pass it through the through hole and screw it into the threaded hole; S5: Place the wooden structural member on the other side in the area between the connecting steel rod and the steel sleeve, and align the through holes of the steel sleeve and the wooden structural member with the threaded holes of the connecting steel rod; apply structural adhesive to the connecting bolts, pass them through the through holes, and screw them into the threaded holes; S6: After all bolts are screwed into the connecting steel bar, inject structural adhesive through the injection hole until the structural adhesive overflows from the observation hole. Once the structural adhesive has solidified, the node splicing is complete.

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