Connecting joint with dovetail T-shaped bolt replacing dovetail tenon and construction method of connecting joint

Abstract

The invention relates to the technical field of buildings, and discloses a connection node with a dovetail T-shaped bolt replacing a dovetail tenon and a construction method of the connection node. A dovetail groove laminated wood beam is fixedly connected with a connecting piece through the dovetail T-shaped bolt; wherein a dovetail groove distributed in the length direction of the dovetail groove laminated wood beam is formed in the end face of the dovetail groove laminated wood beam, the head of the dovetail T-shaped bolt is clamped in the dovetail groove, and the tail of the dovetail T-shaped bolt is fixed to the connecting piece. The problems that in a wood structure, dovetail joint nodes are prone to stress concentration under the long-term load effect, the nodes are weakened, and potential safety hazards exist in the structure are solved. The process and time for pre-burying a C-shaped groove are omitted, the dovetail groove is directly formed in the wood beam, the joint connection quality is guaranteed, meanwhile, the construction efficiency is improved, structural installation is facilitated, and the method can be applied to wood beam and concrete column mixed structure connection joints. The device is simple in structure, convenient to manufacture and install and reliable in node.

Description

Technical Field

[0001] The present invention relates to the field of construction technology, and particularly to a dovetail T-bolt replacing a dovetail joint and its construction method. Background Art

[0002] As one of the most commonly used woodworking joints, the dovetail joint is widely used in the field of construction engineering. Especially in wooden structures, due to its reliable connection strength and stability, the dovetail joint is often used in the connection of beam-column joints.

[0003] Under the action of long-term load, stress concentration is likely to occur in the dovetail joint, weakening the strength and stability of the joint. Therefore, it is often necessary to reinforce and repair the joint through connecting pieces to extend the service life of the joint. Summary of the Invention

[0004] Based on this, in view of the problem that stress concentration is likely to occur in the dovetail joint in wooden structures under the action of long-term load, resulting in the weakening of the joint and potential safety hazards in the structure, it is necessary to provide a dovetail T-bolt replacing a dovetail joint and its construction method.

[0005] To achieve the above object, the present invention provides the following technical solution: A dovetail T-bolt replacing a dovetail joint, including a dovetail groove glued wooden beam, and the dovetail groove glued wooden beam is fixedly connected to a connecting piece through a dovetail T-bolt;

[0006] Wherein, a dovetail groove is arranged on the end face of the dovetail groove glued wooden beam along its length direction, the head of the dovetail T-bolt is clamped in the dovetail groove, and the tail of the dovetail T-bolt is fixed to the connecting piece.

[0007] In a preferred example of the present invention, it can be further configured as: The connecting piece includes glued wood and a concrete column, and a hole adapted to the dovetail T-bolt is opened at the end, and the hole is filled with planting bar adhesive, and the dovetail T-bolt is rotated and inserted into the hole.

[0008] In a preferred example of the present invention, it can be further configured as: The connecting piece includes a fixing object, the fixing object is provided with a hole adapted to the dovetail T-bolt, and the fixing object is fixed to the dovetail groove glued wooden beam through a nut and a flat washer.

[0009] A construction method for a dovetail T-bolt replacing a dovetail joint is applied to a connection joint of a wooden structure beam-column or a connection joint of a mixed structure of a wooden beam and a concrete column. A hole is drilled in the connecting piece, the diameter of the hole is larger than the nominal diameter of the thread of the dovetail T-bolt, and the depth is determined by calculating the embedding depth of the dovetail T-bolt in the column, so that the head of the dovetail T-bolt exposed outside the connecting piece can be smoothly installed in the dovetail groove;

[0010] Inject the bonded rebar adhesive into the hole, and then rotate and insert the dovetail T-bolt into the hole filled with the bonded rebar adhesive, so that the head length direction of the dovetail T-bolt in the final position is parallel to the width direction of the dovetail groove glued laminated timber beam to be installed subsequently;

[0011] After the bonded rebar adhesive is completely cured, align the dovetail groove of the dovetail groove glued laminated timber beam with the head of the dovetail T-bolt and install and fix it.

[0012] A construction method for connecting nodes with a dovetail T-bolt instead of a dovetail tenon is applied to the ceiling laying or hanging system. After installing the dovetail groove glued laminated timber beam, when the building needs to lay or hang objects on the ceiling, install the dovetail T-bolt with the head length direction parallel to the length direction of the dovetail groove glued laminated timber beam into the dovetail groove, and rotate the dovetail T-bolt until it is fixed in the dovetail groove;

[0013] Let the thread of the dovetail T-bolt pass through the opening of the fixed object with an opening, then place a flat washer, and then screw in the nut, and apply the installation torque until the fixed object is firmly fixed between the dovetail groove glued laminated timber beam and the flat washer

[0014] In summary, the present invention includes at least one of the following beneficial technical effects:

[0015] Solve the problem that the dovetail tenon joint in the wood structure is prone to stress concentration under long-term load, resulting in the weakening of the joint and potential safety hazards in the structure.

[0016] The process and time of pre-burying the C-groove are omitted, and the dovetail groove is directly opened in the wooden beam, which improves the construction efficiency while ensuring the joint connection quality, facilitates the structure installation, and can be applied to the connection nodes of the wooden beam and concrete column hybrid structure.

[0017] The structure of the present invention is simple, easy to manufacture and install, and the joint is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0019] Figure 1 is the front view of the present invention;

[0020] Figure 2 is the side view of the present invention.

[0021] In the drawings:

[0022] 1. Dovetail groove glued laminated timber beam; 11. Dovetail groove; 2. Dovetail T-bolt; 3. Glued laminated timber or concrete column; 4. Bonded rebar adhesive; 5. Nut; 6. Flat washer; 7. Fixed object. DETAILED DESCRIPTION OF THE INVENTION

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1:

[0025] As Figure 1-2 shown, the present invention provides a technical solution: a dovetail T-bolt is used to replace the dovetail joint. The dovetail groove glued laminated timber beam 1 is fixedly connected to the connector through the dovetail T-bolt 2.

[0026] Among them, a dovetail groove 11 is arranged on the end face of the dovetail groove glued laminated timber beam 1 along its length direction. The head of the dovetail T-bolt 2 is clamped in the dovetail groove 11, and the tail of the dovetail T-bolt 2 is fixed to the connector.

[0027] The connector includes a glued laminated timber or concrete column 3. A hole adapted to the dovetail T-bolt 2 is opened at the end, and a bonded rebar adhesive 4 is injected into the hole. The dovetail T-bolt 2 is rotated and placed into the hole.

[0028] Construction method: It is applied to the connection nodes of wooden structure beams and columns or the connection nodes of mixed structures of wooden beams and concrete columns. A hole is opened in the glued laminated timber or concrete column 3. The diameter of the hole is larger than the nominal diameter of the thread of the dovetail T-bolt 2, and the depth is determined by calculating the embedding depth of the dovetail T-bolt 2 in the column, so that the head of the dovetail T-bolt 2 exposed outside the glued laminated timber or concrete column 3 can be smoothly installed in the dovetail groove 11 without leaving too much gap. The bonded rebar adhesive 4 is injected into the hole, and then the dovetail T-bolt 2 is rotated and placed into the hole filled with the bonded rebar adhesive 4, so that the length direction of the head of the dovetail T-bolt 2 at the final position is parallel to the width direction of the dovetail groove glued laminated timber beam 1 to be installed later. After the bonded rebar adhesive 4 is completely cured, the dovetail groove 11 of the dovetail groove glued laminated timber beam 1 is aligned with the head of the dovetail T-bolt 2 and installed and fixed.

[0029] Embodiment 2:

[0030] Different from Embodiment 1, the connector includes a fixture 7. The fixture 7 is provided with a hole adapted to the dovetail T-bolt 2, and the fixture 7 is fixed to the dovetail groove glued laminated timber beam 1 through a nut 5 and a flat washer 6.

[0031] Construction method: Applied to ceiling laying or suspension systems. When the building needs to lay a ceiling or suspend objects after the dovetail grooved glued wooden beam 1 has been installed, install the head of the dovetail T-bolt 2 parallel to the length direction of the dovetail grooved glued wooden beam 1 into the dovetail groove 11. Rotate the dovetail T-bolt 2 until it is fixed in the dovetail groove 11. Let the threaded portion of the dovetail T-bolt 2 pass through the opening of the pre-drilled fixture 7. Then place the flat washer 6 and screw in the nut 5. Apply the installation torque until the fixture 7 is firmly fixed between the dovetail grooved glued wooden beam 1 and the flat washer 6.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dovetail T-bolt replaces a dovetail joint, characterized in that: A dovetail groove glued wood beam, wherein the dovetail groove glued wood beam is fixedly connected to the connecting piece by a dovetail T-bolt; Wherein, the end surface of the dovetail groove glued wood beam is provided with a dovetail groove arranged along its length direction, the head of the dovetail T-bolt is clamped in the dovetail groove, and the tail of the dovetail T-bolt is fixed to the connecting piece.

2. According to claim 1, a dovetail T-bolt replaces a dovetail tenon connection node, characterized in that: The connecting piece comprises glued wood and a concrete column, the end of which is provided with a hole adapted to a dovetail T-shaped bolt, the hole is filled with anchoring glue, and the dovetail T-shaped bolt is rotated and placed in the hole.

3. According to claim 1, a dovetail T-bolt replaces a dovetail tenon connection node, characterized in that: The connecting piece comprises a fixing object, the fixing object is provided with a hole adapted to the dovetail T-bolt, and the fixing object is fixed on the dovetail groove glued wood beam by a nut and a flat washer.

4. A construction method for connecting nodes using dovetail T-bolts instead of dovetail tenons according to claim 1 or 2, characterized in that: A hole is opened in the connector, the diameter of the hole is larger than the nominal thread diameter of the dovetail T-bolt, and the depth is determined by calculating the embedding depth of the dovetail T-bolt in the column, so that the head of the dovetail T-bolt exposed outside the connector can be smoothly installed in the dovetail groove; Inject anchoring glue into the hole, then rotate the dovetail T-bolt into the hole filled with anchoring glue, so that the length direction of the head of the dovetail T-bolt in the final position is parallel to the width direction of the dovetail groove glued laminated wood beam to be installed later; After the anchor glue is completely cured, align the dovetail groove of the dovetail-glued timber beam with the head of the dovetail T-bolt and install it.

5. A dovetail T-bolt replacing a dovetail joint and a construction method thereof according to claim 1 or 3, characterized in that: After the dovetail groove glued wood beam is installed, if the building needs to lay a ceiling or hang objects, install the dovetail T-bolt head in parallel with the length direction of the dovetail groove glued wood beam into the dovetail groove, and rotate the dovetail T-bolt until it is fixed in the dovetail groove; The holes in the fixtures are drilled so that the threads of the dovetail T-bolts pass through the holes, then the flat washers are placed and the nuts are screwed in, applying the installation torque until the fixture is firmly fixed between the dovetail slot glued wood beam and the flat washers.

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