A construction method for repositioning and reinforcing mortise and tenon joints in timber-framed residential buildings, involving the removal or detachment of tenons.

Abstract

This invention discloses a construction method for repositioning and reinforcing mortise and tenon joints in timber-framed residential buildings, comprising the following steps: 1. Fabricating steel sleeves according to the dimensions of the wooden columns; 2. Welding left and right threaded rods to obtain reinforcing sleeves; 3. Aligning the tenon with the mortise, installing the two reinforcing sleeves on the column heads of the two wooden columns respectively, connecting them with two turnbuckles, and then injecting glue to obtain a pre-reinforced component; 4. Rotating the turnbuckles until the tenon and mortise of the wooden beam are completely repositioned, and then injecting glue; 5. After the glue has completely cured, tightening the turnbuckles again to complete the repositioning and reinforcement of the mortise and tenon joint. This invention uses the cooperation of two reinforcing sleeves and turnbuckles to tighten the column heads of the two wooden columns, allowing the tenon to slowly insert into the mortise, thus repositioning the mortise and tenon joint. Furthermore, the injection of glue and tightening of the turnbuckles reinforce the mortise and tenon joint, preventing recurrence of tenon pull-out or detachment.

Description

Technical Field

[0001] This invention belongs to the field of repair and reinforcement technology for tenon or mortise removal, specifically involving a construction method for repositioning and reinforcing mortise and tenon joints of wooden frame residential buildings. Background Technology

[0002] Traditional timber-framed architecture refers to a type of building with a timber frame as the main load-bearing structure. This type of architecture is a structural form of Chinese architecture with a long history and a unique system. It has significant advantages such as excellent material properties, convenient material sourcing, diverse forms, easy processing, and economical cost. It is widely used in traditional Chinese residential architecture. The main support method of timber-framed dwellings is to open mortises in the wooden columns and process tenons at both ends of the wooden beams. The wooden beams are supported by the mortise and tenon structure, thus constructing a timber-framed dwelling.

[0003] During earthquakes, many timber-framed houses experienced tenon and mortise joint pull-out, with some even suffering complete detachment. Restoration and reinforcement became crucial technical aspects affecting building safety. Currently, common reinforcement methods include reinforcing tenon and mortise joints with flat steel or carbon fiber cloth. However, these methods are only effective for minor pull-out and have minimal effect on joints with significant pull-out or detachment.

[0004] Therefore, there is an urgent need for a scientific and reasonable method to reinforce this type of earthquake damage. Summary of the Invention

[0005] The technical problem this invention aims to solve is to address the shortcomings of the existing technology by providing a construction method for repositioning and reinforcing mortise and tenon joints in timber-framed residential buildings that have been pulled out or dislodged. This method involves the cooperation of two reinforcing sleeves and turnbuckles to tighten the column heads of two wooden columns, allowing the pulled or dislodged tenon to slowly re-insert into the mortise, thus repositioning the mortise and tenon joint. Furthermore, by injecting adhesive into the gaps and re-tightening the turnbuckles, the mortise and tenon joint is reinforced to prevent recurrence of pull or dislodging.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a construction method for repositioning and reinforcing mortise and tenon joints in wooden frame residential buildings, characterized in that the method includes the following steps:

[0007] Step 1: Make steel sleeves according to the dimensions of the wooden columns of the wooden frame dwelling; the steel sleeves include a left half ring and a right half ring forming a ring with a notch. A left fixing plate is provided on the side of the left half ring away from the notch, and a right fixing plate that cooperates with the left fixing plate is provided on the side of the right half ring away from the notch. Multiple bolt holes are opened on both the left and right fixing plates.

[0008] Step 2: Weld the left and right threaded rods to the middle part of the notch edges of the left and right half rings of the steel sleeve made in Step 1, respectively, to obtain the reinforced sleeve;

[0009] Step 3: Align the tenons of the removed or detached wooden beams with the mortises of the wooden columns. Then, install the two reinforcing sleeves obtained in Step 2 onto the column heads of the two wooden columns corresponding to the wooden beams. Secure the left and right fixing plates with bolts. Connect the four screws of the two reinforcing sleeves with two turnbuckles. Finally, fill the gap between the steel sleeves and the wooden columns with glue to obtain the pre-reinforced components.

[0010] Step 4: Rotate the turnbuckle of the pre-reinforced component obtained in Step 3 to slowly insert the tenon of the pulled or dislodged wooden beam into the mortise of the wooden column until the tenon of the wooden beam and the mortise of the wooden column are completely reset. Then fill the gap between the tenon and the mortise with glue.

[0011] Step 5: After the adhesive from Step 4 has fully cured, tighten the turnbuckles until they are tight, thus completing the repositioning and reinforcement of the mortise and tenon joints.

[0012] This invention facilitates the connection between the reinforcing sleeve and the wooden column by preparing and controlling the shape of the reinforcing sleeve. It also facilitates the mutual cooperation between the two reinforcing sleeves to achieve repositioning. By turning the turnbuckle, the column heads of the two wooden columns are tightened. The tension force slowly inserts the tenon of the wooden beam that has been pulled out or dislodged into the mortise of the wooden column until the tenon of the wooden beam and the mortise of the wooden column are completely repositioned, thus completing the repositioning of the tenon and mortise joint. Furthermore, by injecting glue into the gap between the steel sleeve and the wooden column, filling the gap between the tenon and the mortise with glue, and tightening the turnbuckle until it is tight, the tenon and mortise joint is reinforced to prevent the tenon and mortise joint from being pulled out or dislodged again. At the same time, this repositioning reinforcement is located at the column head of the wooden column and does not affect the normal use of the wooden frame dwelling.

[0013] The invention provides a notch in the steel sleeve to ensure that the notch can accommodate the wooden beam. When the reinforcing sleeve is installed on the column head of the wooden column corresponding to the wooden beam, the column head is usually the position of the mortise, which is the position of the wooden beam, making it easy to reposition.

[0014] The above-mentioned construction method for repositioning and reinforcing mortise and tenon joints in wooden frame dwellings is characterized by the following: in step one, the inner diameter of the steel sleeve is equal to the outer diameter of the wooden column; the steel sleeve is made of steel plate with a thickness of not less than 6mm; the height of the steel sleeve is 10cm to 15cm; and the size of the notch is 5mm to 10mm larger than the width of the wooden beam. This invention, by controlling the inner diameter of the steel sleeve to be equal to the outer diameter of the wooden column, facilitates a tight connection between the steel sleeve and the wooden column, preventing displacement of the steel sleeve on the wooden column when rotating the turnbuckle. Controlling the thickness of the steel sleeve ensures its structural strength and stability when rotating the turnbuckle. Controlling the height of the steel sleeve increases the contact area between the steel sleeve and the wooden column, ensuring even stress on the wooden column when rotating the turnbuckle and guaranteeing smooth repositioning. Controlling the size of the notch to be 5mm to 10mm larger than the width of the wooden beam ensures that the notch can accommodate the wooden beam, facilitating repositioning.

[0015] The above-mentioned construction method for repositioning and reinforcing mortise and tenon joints in wooden frame residential buildings is characterized in that, in step one, the number of bolt holes on both the left and right fixing plates is three or more. This invention, by controlling the number of bolt holes on the left and right fixing plates, ensures the structural strength when the bolt holes on the left and right fixing plates are fixed by bolts, thus guaranteeing the structural strength of the steel sleeve.

[0016] The above-mentioned construction method for resetting and reinforcing mortise and tenon joints in wooden frame dwellings is characterized in that the left and right threaded rods mentioned in step two are both A20 type. This invention ensures the structural strength of the left and right threaded rods by controlling their type, guaranteeing structural stability when the turnbuckle is rotated, thus facilitating resetting.

[0017] The above-mentioned construction method for repositioning and reinforcing mortise and tenon joints in a timber-framed residential building is characterized in that, in step two, the distance between the left and right threaded rods in the reinforcing sleeve is 5mm to 10mm larger than the width of the timber beam. In this invention, by controlling the distance between the left and right threaded rods in the reinforcing sleeve, a certain gap is left between the left and right threaded rods and the timber beam, facilitating the installation and rotation of the turnbuckles.

[0018] The above-mentioned construction method for repositioning and reinforcing mortise and tenon joints in wooden frame dwellings is characterized in that, before aligning the mortise between the detached wooden beam and the wooden column in step three, the dovetail tenon of the wooden beam is shaped into a straight tenon. In this invention, because the head of the dovetail tenon is relatively wide and cannot be aligned with the mortise, shaping it into a straight tenon facilitates alignment. If the tenon head of the wooden beam is a straight tenon, then dovetail shearing is unnecessary.

[0019] The above-mentioned construction method for repositioning and reinforcing mortise and tenon joints in a timber-framed residential building is characterized in that, in step three, both the left and right threaded rods in the reinforcing sleeve are parallel to the wooden beam, and the wooden beam is located at the middle height of the steel sleeve of the reinforcing sleeve in the vertical direction. In this invention, by ensuring that both the left and right threaded rods in the reinforcing sleeve are parallel to the wooden beam, while maintaining the wooden beam at the middle height of the steel sleeve in the vertical direction, the two wooden posts and the wooden beam are subjected to uniform force when the turnbuckle is rotated, and the main force-bearing position of the wooden posts is at the tenon and mortise, facilitating the repositioning of the tenon and mortise.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. This invention, by preparing and controlling the shape of the reinforcing sleeve, facilitates the connection between the reinforcing sleeve and the wooden column, and also facilitates the mutual cooperation between the two reinforcing sleeves to achieve repositioning. By turning the turnbuckle, the column heads of the two wooden columns are tightened. The tension force slowly inserts the tenon of the dislodged wooden beam into the mortise of the wooden column until the tenon of the wooden beam and the mortise of the wooden column are completely repositioned, thus completing the repositioning of the dislodged tenon joint. Furthermore, by injecting glue into the gap between the steel sleeve and the wooden column, filling the gap between the tenon and the mortise with glue, and re-tightening the turnbuckle, the tenon joint is reinforced to prevent the dislodged tenon joint from recurring. At the same time, this repositioning reinforcement is located at the column head of the wooden column and does not affect the normal use of the wooden frame dwelling.

[0022] 2. The notch in the steel sleeve is designed to accommodate the wooden beam. When the reinforcing sleeve is installed on the head of the wooden column corresponding to the beam, the head is typically the location of the mortise, which is the position of the beam, facilitating repositioning. By controlling the inner diameter of the steel sleeve to be equal to the outer diameter of the wooden column, a tight connection between the steel sleeve and the wooden column is ensured, preventing displacement of the steel sleeve on the wooden column when the turnbuckle is rotated. The thickness of the steel sleeve is controlled to ensure its structural strength and stability when the turnbuckle is rotated. The height of the steel sleeve is controlled to increase the contact area between the steel sleeve and the wooden column, ensuring even force distribution on the wooden column when the turnbuckle is rotated, thus facilitating repositioning. The notch size is larger than the width of the wooden beam to ensure that the notch can accommodate the beam, facilitating repositioning.

[0023] 3. In this invention, by making the left and right screws in the reinforcing sleeve parallel to the wooden beam, and keeping the wooden beam at the middle height of the steel sleeve of the reinforcing sleeve in the vertical direction, when the turnbuckle is rotated, the two wooden columns and the wooden beam are subjected to uniform force, and the main force position of the wooden column is at the tenon and mortise, which facilitates the repositioning of the tenon and mortise.

[0024] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the reinforcing sleeve in this invention.

[0026] Figure 2 This is a schematic diagram of the structure after the mortise and tenon joint is repositioned and reinforced by using a reinforcing sleeve in Embodiment 1 of the present invention.

[0027] Figure 3 yes Figure 2 AA sectional view.

[0028] Figure 4 This is a schematic diagram of the structure after the mortise and tenon joint is repositioned and reinforced by using a reinforcing sleeve in Embodiment 2 of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1—Wooden pillar; 1-1—Torch; 2—Wooden beam;

[0031] 2-1—Tenon; 3—Left half ring; 4—Right half ring;

[0032] 5—Left fixing plate; 6—Right fixing plate; 7—Left screw;

[0033] 8—Right screw; 9—Bolt; 10—Turn screw. Detailed Implementation

[0034] Example 1

[0035] This embodiment includes the following steps:

[0036] Step 1: Based on the dimensions of the wooden column 1 of the timber-framed dwelling, a steel sleeve with a height of 15cm is made using a 7mm thick steel plate. The inner diameter of the steel sleeve is equal to the outer diameter of the wooden column 1. The steel sleeve includes a left half-ring 3 and a right half-ring 4 forming a ring with a notch. The size of the notch is 10mm larger than the width of the wooden beam 2. A left fixing piece 5 is provided on the side of the left half-ring 3 away from the notch, and a right fixing piece 6 that cooperates with the left fixing piece 5 is provided on the side of the right half-ring 4 away from the notch. Both the left fixing piece 5 and the right fixing piece 6 have three bolt holes in corresponding positions. In the timber-framed dwelling, the wooden column 1 and the wooden beam 2 are separated by tenon joints, and the tenon of the wooden beam 2 is a dovetail tenon.

[0037] Step 2: Weld left screw 7 and right screw 8, both of type A20, to the middle part of the notch edges of the left half ring 3 and right half ring 4 of the steel sleeve made in Step 1 to obtain the reinforcing sleeve; the distance between the left screw 7 and right screw 8 in the reinforcing sleeve is 10mm larger than the width of the wooden beam 2.

[0038] Step 3: Shape the dovetail tenon of the wooden beam 2 into a straight tenon shape. Then align the tenon 2-1 of the dislocated wooden beam 2 with the mortise 1-1 of the wooden column 1. Next, install the two reinforcing sleeves obtained in Step 2 onto the column heads of the two wooden columns 1 corresponding to the wooden beam 2. Use bolts 9 to fix the left fixing plate 5 and the right fixing plate 6. Then connect the four screws of the two reinforcing sleeves with two turnbuckles 10. Finally, fill the gap between the steel sleeve and the wooden column 1 with glue to obtain the pre-reinforced assembly. The left screw 7 and the right screw 8 in the reinforcing sleeve are parallel to the wooden beam 2. The wooden beam 2 is located at the middle height of the steel sleeve of the reinforcing sleeve in the vertical direction.

[0039] Step 4: Rotate the turnbuckle 10 of the pre-reinforced component obtained in Step 3 to slowly insert the tenon 2-1 of the dislocated wooden beam 2 into the mortise 1-1 of the wooden column 1 until the tenon 2-1 of the wooden beam 2 and the mortise 1-1 of the wooden column 1 are completely reset. Then, fill the gap between the tenon 2-1 and the mortise 1-1 with glue.

[0040] Step 5: After the adhesive from Step 4 has completely cured, tighten the turnbuckles by 10 until they are fully tightened. This completes the repositioning and reinforcement of the detached tenon joint. See below. Figure 2 and Figure 3 .

[0041] After testing, the repositioned and reinforced mortise and tenon joint structure was found to be solid and would not affect the normal use of the wooden frame dwelling. The reinforced wooden frame dwelling not only ensured the safety of the house, but also avoided the wasteful situation of having to demolish and rebuild in similar situations, greatly reducing the economic burden on farmers.

[0042] Example 2

[0043] This embodiment includes the following steps:

[0044] Step 1: Based on the dimensions of the wooden column 1 of the timber-framed dwelling, a steel sleeve with a height of 10cm is made using a 6mm thick steel plate. The inner diameter of the steel sleeve is equal to the outer diameter of the wooden column 1. The steel sleeve includes a left half-ring 3 and a right half-ring 4 forming a ring with a notch. The size of the notch is 5mm larger than the width of the wooden beam 2. A left fixing piece 5 is provided on the side of the left half-ring 3 away from the notch, and a right fixing piece 6 that cooperates with the left fixing piece 5 is provided on the side of the right half-ring 4 away from the notch. Each of the left fixing piece 5 and the right fixing piece 6 has three bolt holes in corresponding positions. In the timber-framed dwelling, the wooden column 1 and the wooden beam 2 are tenoned together, and the tenon of the wooden beam 2 is a straight tenon.

[0045] Step 2: Weld left screw 7 and right screw 8, both of type A20, to the middle part of the notch edges of the left half ring 3 and right half ring 4 of the steel sleeve made in Step 1 to obtain the reinforcing sleeve; the distance between the left screw 7 and right screw 8 in the reinforcing sleeve is 5mm larger than the width of the wooden beam 2;

[0046] Step 3: Align the tenon 2-1 of the tenoned wooden beam 2 with the mortise 1-1 of the wooden column 1. Then, install the two reinforcing sleeves obtained in Step 2 onto the column heads of the two wooden columns 1 corresponding to the wooden beam 2. Fix the left fixing plate 5 and the right fixing plate 6 with bolts 9. Then connect the four screws of the two reinforcing sleeves with two turnbuckles 10. Finally, fill the gap between the steel sleeve and the wooden column 1 with glue to obtain the pre-reinforced assembly. The left screw 7 and the right screw 8 in the reinforcing sleeve are parallel to the wooden beam 2. The wooden beam 2 is located at the middle height of the steel sleeve of the reinforcing sleeve in the vertical direction.

[0047] Step 4: Rotate the turnbuckle 10 of the pre-reinforced component obtained in Step 3 to slowly insert the tenon 2-1 of the pulled wooden beam 2 into the mortise 1-1 of the wooden column 1 until the tenon 2-1 of the wooden beam 2 and the mortise 1-1 of the wooden column 1 are completely reset. Then, fill the gap between the tenon 2-1 and the mortise 1-1 with glue.

[0048] Step 5: After the adhesive from Step 4 has completely cured, tighten the turnbuckles by 10 until they are fully tightened. This completes the repositioning and reinforcement of the tenon joint. See below. Figure 4 .

[0049] After testing, the repositioned and reinforced mortise and tenon joint structure was found to be solid and would not affect the normal use of the wooden frame dwelling. The reinforced wooden frame dwelling not only ensured the safety of the house, but also avoided the wasteful situation of having to demolish and rebuild in similar situations, greatly reducing the economic burden on farmers.

[0050] Example 3

[0051] This embodiment includes the following steps:

[0052] Step 1: Based on the dimensions of the wooden column 1 of the timber-framed dwelling, a steel sleeve with a height of 12cm is made using a steel plate with a thickness of 8mm. The inner diameter of the steel sleeve is equal to the outer diameter of the wooden column 1. The steel sleeve includes a left half-ring 3 and a right half-ring 4 forming a ring with a notch. The size of the notch is 8mm larger than the width of the wooden beam 2. A left fixing piece 5 is provided on the side of the left half-ring 3 away from the notch, and a right fixing piece 6 that cooperates with the left fixing piece 5 is provided on the side of the right half-ring 4 away from the notch. Both the left fixing piece 5 and the right fixing piece 6 have 4 bolt holes in corresponding positions. In the timber-framed dwelling, the wooden column 1 and the wooden beam 2 are tenoned together, and the tenon of the wooden beam 2 is a straight tenon.

[0053] Step 2: Weld left screw 7 and right screw 8, both of type A20, to the middle part of the notch edges of the left half ring 3 and right half ring 4 of the steel sleeve made in Step 1 to obtain the reinforcing sleeve; the distance between the left screw 7 and right screw 8 in the reinforcing sleeve is 8mm larger than the width of the wooden beam 2;

[0054] Step 3: Align the tenon 2-1 of the tenoned wooden beam 2 with the mortise 1-1 of the wooden column 1. Then, install the two reinforcing sleeves obtained in Step 2 onto the column heads of the two wooden columns 1 corresponding to the wooden beam 2. Fix the left fixing plate 5 and the right fixing plate 6 with bolts 9. Then connect the four screws of the two reinforcing sleeves with two turnbuckles 10. Finally, fill the gap between the steel sleeve and the wooden column 1 with glue to obtain the pre-reinforced assembly. The left screw 7 and the right screw 8 in the reinforcing sleeve are parallel to the wooden beam 2. The wooden beam 2 is located at the middle height of the steel sleeve of the reinforcing sleeve in the vertical direction.

[0055] Step 4: Rotate the turnbuckle 10 of the pre-reinforced component obtained in Step 3 to slowly insert the tenon 2-1 of the pulled wooden beam 2 into the mortise 1-1 of the wooden column 1 until the tenon 2-1 of the wooden beam 2 and the mortise 1-1 of the wooden column 1 are completely reset. Then, fill the gap between the tenon 2-1 and the mortise 1-1 with glue.

[0056] Step 5: After the adhesive from Step 4 has fully cured, tighten the turnbuckle 10 until it is tight, thus completing the repositioning and reinforcement of the tenon joint.

[0057] After testing, the repositioned and reinforced mortise and tenon joint structure was found to be solid and would not affect the normal use of the wooden frame dwelling. The reinforced wooden frame dwelling not only ensured the safety of the house, but also avoided the wasteful situation of having to demolish and rebuild in similar situations, greatly reducing the economic burden on farmers.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Any simple modifications, alterations, and equivalent changes made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A construction method for repositioning and reinforcing mortise and tenon joints in timber-framed residential buildings, characterized in that: The method includes the following steps: Step 1: Make steel sleeves according to the dimensions of the wooden columns (1) of the wooden frame dwelling; the steel sleeves include a left half ring (3) and a right half ring (4) forming a ring with a notch. A left fixing piece (5) is provided on the side of the left half ring (3) away from the notch, and a right fixing piece (6) that cooperates with the left fixing piece (5) is provided on the side of the right half ring (4) away from the notch. Multiple bolt holes are opened on both the left fixing piece (5) and the right fixing piece (6). Step 2: Weld the left screw (7) and right screw (8) to the middle part of the notch edge of the left half ring (3) and right half ring (4) of the steel sleeve made in Step 1, respectively, to obtain the reinforced sleeve; Step 3: Align the tenon (2-1) of the tenoned or disassembled wooden beam (2) with the mortise (1-1) of the wooden column (1), and then install the two reinforcing sleeves obtained in Step 2 on the column heads of the two wooden columns (1) corresponding to the wooden beam (2), and fix the left fixing plate (5) and the right fixing plate (6) with bolts (9), and then connect the four screws of the two reinforcing sleeves with two turnbuckles (10). Finally, fill the gap between the steel sleeve and the wooden column (1) with glue to obtain the pre-reinforced assembly; before aligning the tenoned or disassembled wooden beam (2) with the wooden column (1) at the mortise (1-1), cut the dovetail tenon of the wooden beam (2) into a straight tenon shape; the left screw (7) and the right screw (8) in the reinforcing sleeve are parallel to the wooden beam (2); Step 4: Rotate the turnbuckle (10) of the pre-reinforced component obtained in Step 3 to slowly insert the tenon (2-1) of the pulled or dislodged wooden beam (2) into the mortise (1-1) of the wooden column (1) until the tenon (2-1) of the wooden beam (2) and the mortise (1-1) of the wooden column (1) are completely reset. Then, fill the gap between the tenon (2-1) and the mortise (1-1) with glue. Step 5: After the glue in Step 4 has fully cured, tighten the turnbuckle (10) until it is tight, and complete the repositioning and reinforcement of the tenon joint after the tenon has been removed or dislodged.

2. The construction method for repositioning and reinforcing mortise and tenon joints in a timber-framed residential building according to claim 1, characterized in that, In step one, the inner diameter of the steel sleeve is equal to the outer diameter of the wooden column (1). The steel sleeve is made of steel plate with a thickness of not less than 6mm. The height of the steel sleeve is 10cm~15cm. The size of the notch is 5mm~10mm larger than the width of the wooden beam (2).

3. The construction method for repositioning and reinforcing mortise and tenon joints in a timber-framed residential building according to claim 1, characterized in that, The number of bolt holes on the left fixing plate (5) and the right fixing plate (6) mentioned in step one is more than three.

4. The construction method for repositioning and reinforcing mortise and tenon joints in a timber-framed residential building according to claim 1, characterized in that, In step two, the distance between the left screw (7) and the right screw (8) in the reinforcing sleeve is 5mm to 10mm larger than the width of the wooden beam (2).

5. The construction method for repositioning and reinforcing mortise and tenon joints in a timber-framed residential building according to claim 1, characterized in that, The wooden beam (2) mentioned in step three is located at the middle height of the steel sleeve of the reinforcing sleeve in the vertical direction.

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