Construction method of fireproofing and heat preservation of expansion joints in building walls

Abstract

The present invention belongs to the field of building construction technology, and specifically relates to a fireproofing and heat-insulating construction method for deformation joints of building walls, comprising the following steps: S1, making internal anchors, external anchors, parapet fixings, a fireproof base lining and a water diversion top plate, setting a reinforcement net on the surface of the parapet inside the deformation joint, and fixing a plurality of brackets at the bottom of the reinforcement net; S2, connecting the fireproof base lining with the internal anchors, placing them in the deformation joint, opening a waterproof reservation on the side of the parapet away from the deformation joint, and fastening the bottom of the external anchor in the waterproof reservation; S3, connecting the external anchors with the internal anchors through the parapet fixings, and setting the fastening bolts in a retractable variable track in accordance with the length and width of the parapet; S4, filling the deformation joint with fireproofing and heat-insulating material, and finally installing the water diversion top plate; the present invention improves the overall performance and safety of the building.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a fireproofing and heat-insulating construction method for a building wall expansion joint. Background Art

[0002] During construction, expansion joints are installed to prevent structural expansion and contraction due to overall structural oversizing. Insulating expansion joints is a key step in reducing thermal bridges and improving insulation performance. This requires a systematic approach based on the expansion joint type, material properties, and construction specifications. However, current construction techniques can lead to cracking and insulation failure due to aging and insufficient insulation performance. Furthermore, lax insulation between the insulation layers on either side of the expansion joint can lead to excessive temperature differences and condensation, which can cause frost heave in the wall or paint peeling.

[0003] Chinese patent CN221073067U discloses a deformation joint structure between roof parapets, which is arranged between the parapets at the top of adjacent main structures, and a first waterproof layer is arranged above the joint, and the two ends of the first waterproof layer extend to the roof of the parapets of the main structure on both sides of the joint respectively; it includes a joint cover plate arranged above the joint and a joint base plate arranged at the bottom of the joint; the joint cover plate is strip-shaped and is usually arranged above the joint in the longitudinal direction, and the two ends of the joint cover plate extend beyond the inner side surfaces of the parapets on both sides of the joint, and the joint base plate is long strip-shaped and is arranged at the bottom of the joint along the long axis of the joint; the cross-section of the joint base plate is an inverted V-shape, and the two ends of the joint base plate are bent horizontally outward to form a folded edge; the folded edge is located at the bottom of the roof beams on both sides of the joint and is fixed to the roof beams by fixing nails; polyethylene foam plastic is filled in the joint and at the top of the joint base plate.

[0004] In the above patent, the joint cover plate is provided at the top of the expansion joint with an integral structure that protrudes and is easy to fall off, which will cause the waterproof effect of the expansion joint to deteriorate. The joint bottom plate will divert the accumulated water to both sides, causing the accumulated water to flow to the wall surface, causing damage to the wall, thereby affecting the construction quality of the building. Summary of the Invention

[0005] In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is: to provide a fireproofing and thermal insulation construction method for deformation joints of building walls, to ensure that the deformation requirements of the building structure are met and to achieve the thermal insulation and waterproofing effect of the deformation joints.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] The fireproofing and heat-insulating construction method for expansion joints of building walls according to the present invention comprises the following steps:

[0008] S1. Fabricate internal and external anchors, parapet fixings, fireproof lining, and water diversion top plate. Install retractable variable tracks on the parapet fixings. Open a diversion channel on the bottom of the fireproof lining. Install a reinforcement mesh on the parapet surface inside the expansion joint, and secure several brackets at the bottom of the reinforcement mesh.

[0009] S2. Connect the fireproof underlayment to the internal anchors and place them in the expansion joint. The reinforcement mesh is located between the parapet and the internal anchors. A waterproofing opening is opened on the side of the parapet away from the expansion joint, and the bottom of the external anchor is fastened in the waterproofing opening.

[0010] S3. Connect the external anchors to the internal anchors through the parapet fixings. At the same time, according to the length and width of the parapet, set the fastening bolts in the retractable variable track;

[0011] S4. Fill the expansion joint with fireproof and heat-insulating materials and place them on top of the bracket. Finally, install the water diversion top plate on top of the parapet fixings on both sides of the expansion joint.

[0012] in:

[0013] In the manufacturing method of the fireproof bottom lining in step S1, the galvanized flat iron or stainless steel plate is bent into a V shape, and a plurality of diversion channels are opened at intervals at the bottom.

[0014] The angle of the V-shaped structure of the fireproof bottom lining is less than or equal to 90°.

[0015] The method for making the water diversion top plate in step S1 is to bend the galvanized flat iron or stainless steel plate into an arc-shaped plate along the bending axis, the bending axis is parallel to the long side of the galvanized flat iron or stainless steel plate, and the galvanized flat iron or stainless steel plate is vertically cut and welded at the center of the bending axis, so that the whole is an inward-concave arc-shaped top plate with a high middle and low sides, triangular drainage plates are installed at both ends of the inward-concave arc-shaped top plate, connecting plates are set on the left and right sides of the inward-concave arc-shaped top plate to match the deformation joints, and bolt holes are opened on the connecting plates.

[0016] When the heights of the parapets on both sides of the expansion joint are the same, the connecting plates on the left and right sides of the concave arc top plate are both straight plates; when the heights of the parapets on both sides of the expansion joint are different, the connecting plates on the left and right sides of the concave arc top plate are respectively set to be straight plates and inverted L-shaped plates, and the inverted L-shaped plates are used to connect the parapets with higher heights.

[0017] In the step S1, gaps for accommodating internal anchors are provided between the brackets, and connecting bolts are passed through the connecting screw holes to fix the reinforcing mesh and the brackets to the parapet.

[0018] In step S1, the external anchors and the parapet fixings are both arranged in an L-shape as a whole.

[0019] In step S2, the internal anchor is set in an inverted L shape and is spaced apart on both sides of the fireproof base lining. The end of the internal anchor close to the fireproof base lining is set at an angle consistent with the fireproof base lining, and the other end of the internal anchor is set on the top surface of the parapet.

[0020] In step S3, the upper parts of the internal and external anchors are both provided with bolt holes to match the telescopic variable track, and the width of the telescopic variable track is adapted to the diameter of the fastening bolts.

[0021] In step S4, the distance between the bottom of the fireproof and thermal insulation material and the top of the expansion joint is greater than or equal to 300 mm.

[0022] The beneficial effects of the present invention are:

[0023] The present invention provides a fireproof underlayment inside the expansion joint of the building wall, which can guide the condensed water generated by the temperature difference between the walls on both sides of the expansion joint, preventing the condensed water from adhering to the wall for a long time and causing damage to the wall, thereby causing problems such as mildew and leakage. At the same time, filling the expansion joint with fireproof and heat-insulating materials can form a closed cavity, reduce the intrusion of external cold air, thereby reducing heat transfer at the expansion joint, reducing damage to the entire building, and improving thermal insulation safety performance.

[0024] The device of the present invention has a flexible structural design and can adopt various construction methods in combination with the characteristics of the building. The fireproof bottom lining and the water diversion top plate are elastically connected to the anchor by bolts, which can be constructed according to different expansion joint structures to realize the use of various structures. At the same time, it can also adapt to the deformation of the expansion joint. When the expansion joint deforms, the anchor can change according to the deformation of the expansion joint, ensuring the protection of the expansion joint structure and taking into account thermal insulation, waterproofing and deformation adaptability.

[0025] After filling with fireproof and thermal insulation materials, the temperature inside the expansion joint approaches that of the surrounding walls, reducing the temperature difference within the expansion joint and thus reducing condensation and moisture erosion on the structure. When used in combination with structures such as fireproof lining and water diversion roof, it can not only adapt to the deformation of the building but also reduce damage such as condensation caused by temperature changes. The structure of the water diversion roof, which is higher in the middle and lower around the edges, can prevent external water from accumulating inside the water diversion roof. The triangular drainage plate helps drain accumulated water and prevent it from entering the expansion joint. Condensation generated on the surface of the parapet inside the expansion joint due to temperature differences can fall into the fireproof lining. The V-shaped structure of the fireproof lining can collect condensation at the bottom and discharge it through the diversion channel, further reducing condensation damage to the expansion joint. After the building deforms, new gaps may form between the fireproof and thermal insulation materials and the building, which can cause condensation and mold. The V-shaped fireproof lining at the bottom of the fireproof and thermal insulation materials can drain the newly generated condensation again, further enhancing the stability of the structure.

[0026] The fireproof and thermal insulation construction method for building wall expansion joints provided by the present invention solves the heat loss and condensation problems of traditional expansion joints through construction technology optimization, and also improves the overall performance and safety of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the present invention Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the structure of the fireproof backing and internal tie members of the present invention;

[0029] Figure 3 It is a schematic diagram of the use process of the present invention;

[0030] Figure 4 Schematic diagram of the reinforcing net and bracket structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the water diversion top plate structure of the present invention Figure 1 ;

[0032] Figure 6 This is a schematic diagram of the water diversion top plate structure of the present invention Figure 2 ;

[0033] Figure 7 This is a schematic diagram of the structure of the present invention Figure 2 ;

[0034] Figure 8 This invention Figure 1 Enlarged view of point A in the middle.

[0035] In the figure: 1. Fireproof base lining; 2. Waterproof reserved opening; 3. Fireproof and thermal insulation material; 4. Water diversion top plate; 5. Parapet; 6. Internal anchors; 7. Expansion joint; 8. Reinforcement mesh; 9. Bracket; 10. Parapet fixings; 11. External anchors; 101. Diversion channel; 401. Triangular diversion plate; 402. Straight plate; 403. Concave arc top plate; 404. Inverted L-shaped plate; 901. Connecting screw holes; 1001. Retractable variable track. DETAILED DESCRIPTION

[0036] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0037] Example 1

[0038] like Figure 1 As shown in Figure 8, the fireproofing and thermal insulation construction method for expansion joints of building walls according to the present invention comprises the following steps:

[0039] S1. Fabricate internal anchors 6, external anchors 11, parapet fixings 10, fireproof lining 1, and water diversion top plate 4. Install retractable variable track 1001 on parapet fixings 10. Open diversion channel 101 at the bottom of fireproof lining 1. Install reinforcement mesh 8 on the surface of parapet 5 inside expansion joint 7. Secure several brackets 9 to the bottom of reinforcement mesh 8.

[0040] S2. Connect the fireproof underlay 1 to the internal anchor 6 and place it in the expansion joint 7. Position the reinforcing mesh 8 between the parapet 5 and the internal anchor 6. Create a waterproof opening 2 on the side of the parapet 5 away from the expansion joint, and tighten the bottom of the external anchor 11 in the waterproof opening 2.

[0041] S3. Connect the external anchor 11 to the internal anchor 6 through the parapet fixing member 10. At the same time, according to the length and width of the parapet 5, set the fastening bolts in the telescopic variable track 1001;

[0042] S4. Fill the fireproof and heat-insulating material 3 into the deformation joint 7 and place it on the bracket 9. Finally, install the water diversion top plate 4 on the parapet fixings 10 on both sides of the deformation joint.

[0043] In step S1 , the fireproof lining 1 is manufactured by bending a galvanized flat iron or stainless steel plate into a V-shape and providing a plurality of diversion channels 101 at intervals at the bottom.

[0044] The angle of the V-shaped structure of the fireproof backing 1 is less than or equal to 90°.

[0045] The water diversion top plate 4 in step S1 is manufactured by bending the galvanized flat iron or stainless steel plate into an arc-shaped plate along the bending axis, the bending axis is parallel to the long side of the galvanized flat iron or stainless steel plate, and the galvanized flat iron or stainless steel plate is vertically cut and welded at the center of the bending axis, so that the whole is an inward-concave arc-shaped top plate 403 with a high middle and low sides, and triangular drainage plates 401 are installed at both ends of the inward-concave arc-shaped top plate 403. Connecting plates are set on the left and right sides of the inward-concave arc-shaped top plate 403 to cooperate with the deformation joint 7, and bolt holes are opened on the connecting plates.

[0046] When the heights of the parapets 5 on both sides of the deformation joint 7 are the same, the connecting plates on the left and right sides of the concave arc top plate 403 are both straight plates 402; when the heights of the parapets 5 on both sides of the deformation joint 7 are different, the connecting plates on the left and right sides of the concave arc top plate 403 are respectively set to be straight plates 402 and inverted L-shaped plates 404, and the inverted L-shaped plates 404 are used to connect the parapets 5 with higher heights.

[0047] In step S1 , gaps for accommodating the internal anchors 6 are provided between the brackets 9 , and connecting bolts are passed through the connecting screw holes 901 to fix the reinforcing mesh 8 and the brackets 9 to the parapet 5 .

[0048] In step S1 , the external anchor 11 and the parapet fixing member 10 are both arranged in an L-shape as a whole.

[0049] In step S2, the internal anchor 6 is set in an inverted L shape and is arranged on both sides of the fireproof base 1 with back-to-back spacing. The end of the internal anchor 6 close to the fireproof base 1 is set at an angle consistent with the fireproof base 1, and the other end of the internal anchor 6 is set on the top surface of the parapet 5.

[0050] In step S3 , bolt holes are provided on the upper parts of the internal anchor 6 and the external anchor 11 to match the telescopic variable track 1001 , and the width of the telescopic variable track 1001 is adapted to the diameter of the fastening bolts.

[0051] In step S4, the distance between the bottom of the fireproof and heat-insulating material 3 and the top of the deformation joint 7 is greater than or equal to 300 mm.

[0052] Furthermore, if Figure 1-5 as well as Figure 8 As shown, the fireproofing and heat-insulating construction method of the building wall expansion joint of the present invention comprises the following steps:

[0053] a1. Bend the galvanized flat iron or stainless steel plate into an 80° V-shaped fireproof backing 1, and open a number of diversion channels 101 at intervals on the bottom of the fireproof backing 1;

[0054] Bend a galvanized flat iron or stainless steel plate along a bending axis into an arc plate, with the bending axis being parallel to the long side of the galvanized flat iron or stainless steel plate. Cut and weld the galvanized flat iron or stainless steel plate perpendicularly at the center of the bending axis to form an inwardly concave arc-shaped top plate 403 with a high center and low sides. Install triangular drainage plates 401 at both ends of the inwardly concave arc-shaped top plate 403. Set straight plates 402 on the left and right sides of the inwardly concave arc-shaped top plate 403 in conjunction with the deformation joints 7. Bolt holes are opened on the straight plates 402 to obtain a water diversion top plate 4.

[0055] Stainless steel plates are used to uniformly manufacture L-shaped external tie members 11 and parapet fixing members 10 adapted to the parapet 5, and a retractable variable track 1001 is provided on the parapet fixing member 10. A reinforcing mesh 8 is provided on the surface of the parapet 5 inside the deformation joint 7, and a plurality of brackets 9 are fixedly provided at intervals at the bottom of the reinforcing mesh 8. Connecting bolts are passed through the connecting screw holes 901 to fix the reinforcing mesh 8 and the brackets 9 to the parapet 5.

[0056] a2. Arrange the internal anchors 6 in an inverted L-shape and space them back to back on both sides of the fireproof backing 1. The end of the internal anchor 6 close to the fireproof backing 1 is arranged at an angle that matches the fireproof backing 1. The other end of the internal anchor 6 is placed on the top surface of the parapet 5, so that the fireproof backing 1 is placed in the expansion joint 7. The reinforcement mesh 8 is located between the parapet 5 and the internal anchor 6. A waterproof reserved opening 2 is opened on the side of the parapet 5 away from the expansion joint, and the bottom of the external anchor 11 is fastened in the waterproof reserved opening 2.

[0057] a3. Connect the external anchor 11 to the internal anchor 6 through the parapet fixing piece 10. At the same time, according to the length and width of the parapet 5, set the fastening bolts in the telescopic variable track 1001 and pass them through the bolt holes of the external anchor 11 and the internal anchor 6 to fix them to the parapet 5;

[0058] a4. Fill the expansion joint 7 with the fireproof and heat-insulating material 3 and place it on top of the bracket 9. The distance between the bottom of the fireproof and heat-insulating material 3 and the top of the expansion joint 7 is 300 mm. Finally, install the water diversion top plate 4 on top of the parapet fixings 10 on both sides of the expansion joint.

[0059] Example 2

[0060] like Figure 6 、 7 As shown, in step S1, internal anchors 6 of different heights are set according to the parapets 5 of different heights on the left and right sides of the deformation joint, and straight plates 402 and inverted L-shaped plates 404 are respectively set on the left and right sides of the concave arc top plate 403 to match the deformation joint 7. The inverted L-shaped plate 404 is used to connect the high parapet 5; the remaining steps are the same as in Example 1.

Claims

1. A fireproofing and heat-insulating construction method for expansion joints of building walls, characterized in that: The following steps are involved: S1, making internal tie pieces (6), external tie pieces (11), parapet fixing pieces (10), fireproof bottom lining (1) and water diversion top plate (4), and setting a retractable variable track (1001) on the parapet fixing piece (10), opening a diversion channel (101) at the bottom of the fireproof bottom lining (1), setting a reinforcement net (8) on the surface of the parapet (5) inside the deformation joint (7), and fixing a plurality of brackets (9) at the bottom of the reinforcement net (8); S2. Connect the fireproof base lining (1) to the internal tie piece (6) and place it in the deformation joint (7). The reinforcement mesh (8) is located between the parapet (5) and the internal tie piece (6). A waterproof reserved opening (2) is opened on the side of the parapet (5) away from the deformation joint, and the bottom of the external tie piece (11) is fastened in the waterproof reserved opening (2); S3, connecting the external tie piece (11) to the internal tie piece (6) through the parapet fixing piece (10), and at the same time setting the fastening bolts in the telescopic variable track (1001) in accordance with the length and width of the parapet (5); S4, filling the fireproof insulation material (3) into the deformation joint (7) and placing it above the bracket (9), and finally installing the water diversion top plate (4) above the parapet fixings (10) on both sides of the deformation joint; In step S1, the fireproof bottom lining (1) is manufactured by bending a galvanized flat iron or stainless steel plate into a V-shape and providing a plurality of diversion channels (101) at intervals at the bottom.

2. The fireproofing and heat-insulating construction method for expansion joints of building walls according to claim 1 is characterized in that: The angle of the V-shaped structure of the fireproof bottom lining (1) is less than or equal to 90°.

3. The fireproofing and heat-insulating construction method for expansion joints of building walls according to claim 1 is characterized in that: In step S1, the water diversion top plate (4) is manufactured by bending a galvanized flat iron or stainless steel plate along a bending axis into an arc-shaped plate, wherein the bending axis is parallel to the long side of the galvanized flat iron or stainless steel plate, and vertically cutting and welding the galvanized flat iron or stainless steel plate at the center of the bending axis so that the whole is an inward-concave arc-shaped top plate (403) with a high middle and low sides. Triangular drainage plates (401) are installed at both ends of the inward-concave arc-shaped top plate (403), and connecting plates are provided on the left and right sides of the inward-concave arc-shaped top plate (403) in conjunction with the deformation joints (7), and bolt holes are opened on the connecting plates.

4. The fireproofing and heat-insulating construction method for expansion joints of building walls according to claim 3 is characterized in that: When the parapet walls (5) on both sides of the deformation joint (7) are of the same height, the connecting plates on the left and right sides of the indented arc-shaped top plate (403) are both straight plates (402); when the parapet walls (5) on both sides of the deformation joint (7) are of different heights, the connecting plates on the left and right sides of the indented arc-shaped top plate (403) are respectively set as straight plates (402) and inverted L-shaped plates (404), and the inverted L-shaped plates (404) are used to connect the parapet walls (5) with higher heights.

5. The fireproofing and heat-insulating construction method for expansion joints of building walls according to claim 1 is characterized in that: In step S1, gaps for accommodating internal anchors (6) are provided between the plurality of brackets (9), and connecting bolts are passed through the connecting screw holes (901) to fix the reinforcing net (8) and the brackets (9) to the parapet (5).

6. The fireproofing and heat-insulating construction method for expansion joints of building walls according to claim 1 is characterized in that: In step S1, the external anchor (11) and the parapet fixing member (10) are both arranged in an L-shape as a whole.

7. The fireproofing and heat-insulating construction method for expansion joints of building walls according to claim 1 is characterized in that: In step S2, the internal tie member (6) is set in an inverted L shape and is arranged at intervals on both sides of the fireproof base lining (1) in back-to-back relation. One end of the internal tie member (6) close to the fireproof base lining (1) is arranged at an angle corresponding to the fireproof base lining (1), and the other end of the internal tie member (6) is arranged on the top surface of the parapet (5).

8. The fireproofing and heat-insulating construction method for expansion joints of building walls according to claim 1 is characterized in that: In step S3, the upper parts of the internal anchor member (6) and the external anchor member (11) are both provided with bolt holes in cooperation with the telescopic variable track (1001), and the width of the telescopic variable track (1001) is adapted to the diameter of the fastening bolts.

9. The fireproofing and heat-insulating construction method for expansion joints of building walls according to claim 1, characterized in that: In step S4, the distance between the bottom of the fireproof and heat-insulating material (3) and the top of the deformation joint (7) is greater than or equal to 300 mm.

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