A construction technology for thermal insulation layer of exterior wall of high-rise building

Abstract

The present invention discloses a construction process for the insulation layer of the exterior wall of a high-rise building. By adopting a sandwich insulation board structure with a fireproof outer layer and heat-insulating inner layer, the hidden danger of the insulation layer igniting when exposed to fire is eliminated. At the same time, the "independent plate" structure avoids the problem of rapid spread of continuous combustion and stress release. Partition bodies are used at the joints. The partition bodies can not only achieve the flame-retardant effect of partitioning, but also support and connect the adjacent insulation boards. The partition bodies are provided with a hook-and-fix installation from the outside to the insulation board, and the joints are filled with sealant. The rigid pushing structure on the partition body can compact the sealant while ensuring the structural strength of the ear-hanging parts, thereby meeting the support effect. This connection has high safety, good integrity, and good wind and pressure resistance.

Description

Technical Field

[0001] The invention relates to an exterior wall thermal insulation construction technology, in particular to a construction process for an exterior wall thermal insulation layer of a high-rise building. Background Art

[0002] Existing exterior wall insulation construction mostly uses a bonding layer, such as CN110424558A - a method for preventing hollowing and shedding of the bottom insulation layer. However, due to the significant material difference between the insulation layer and the shear wall during construction, structural unification cannot be achieved, resulting in a double-layer structure. This double-layer structure will delaminate after long-term use, especially in high-altitude buildings where the insulation layer is prone to shedding. Therefore, it is necessary to improve the existing construction process using a bonding insulation layer. At the same time, the insulation panels on the exterior walls of high-rise buildings generally do not have a fireproof effect. That is, when a fire occurs on a certain layer of the exterior wall, it is easy to cause the entire surface insulation board to burn. Therefore, it is also necessary to ensure that the insulation layer has flame retardant properties. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: how to overcome the existing problem of high-rise building exterior wall insulation layer being easily detached by pasting and the insulation layer not having flame retardant partition function, and also to solve the problem of structural stability of high-rise exterior wall insulation layer.

[0004] In order to solve the above technical problems, the inventors have come up with the technical solution of the present invention through practice and summary. The present invention adopts the following technical solution:

[0005] A construction process for a high-rise building exterior wall insulation layer, the construction steps comprising:

[0006] Step 1: Cleaning the base

[0007] Clean the remaining dust, release agent oil stains and plaster hollow areas on the concrete wall;

[0008] Remove the cracked concrete blocks, inclusions and hollows at the joints of the shear walls and repair them;

[0009] Window sills, eaves and overhangs are graded with cement mortar at a slope of 2%, all openings on the exterior walls are densely filled, and the exterior wall surface flatness meets the requirements;

[0010] Step 2: Roughening the cement slurry

[0011] The base wall should be roughened with 1:1 construction glue cement slurry. The base should be watered with appropriate amount of water and the roughening should be uniform.

[0012] Step 3: Cement mortar leveling

[0013] Before cement mortar leveling, according to the building facade design and external wall insulation technical requirements, the horizontal and vertical control lines of external doors and windows, expansion lines, and decorative seams are marked on the wall surface, and vertical reference steel lines are hung at the inner and outer corners of the building's external walls and other necessary locations;

[0014] Make mortar cakes and punch reinforcement according to the drawn control line, with a spacing of 1.5 meters between mortar cakes. After the mortar cakes are dry, the leveling layer is completed in two passes with an average thickness of 2 cm to obtain the leveling layer;

[0015] Step 4: Insulation board construction

[0016] On the leveling layer, according to the requirements of the exterior wall construction drawings, the insulation board installation edge line and anchor point drilling are marked. The connecting ear plates on the side of the insulation board are installed in the holes at the corresponding anchor points through the anchor bolts. The holes need to be treated with glue.

[0017] The insulation board includes an inner filling insulation board and an outer protective flame retardant board, the outer protective flame retardant board seals and wraps the inner filling insulation board, and a connecting ear plate is provided on the left and upper side close to the shear wall, a hook plate 1 is provided on the side away from the shear wall, and a hook plate 2 is provided on the right and lower side away from the shear wall;

[0018] A composite panel is provided on the outer side of the outer protective flame retardant board;

[0019] Step 5: Filling and partitioning

[0020] When installing a new insulation board on the side of the installed insulation board, it is necessary to fit the hook plate 2 onto the side of the corresponding connecting ear plate and fix it with anchor bolts. After the installation is completed, a joint will appear between the two insulation boards. The joint is formed by the connecting ear plate, hook plate 1, hook plate 2, and the outer protective flame retardant board.

[0021] Fill the joint with sealant and apply waterproof glue at the joint opening, then insert the partition body. The partition body includes a sealing body with waterproof glue pressed on the outer sides of the first and second hook bodies and suitable for being installed between two adjacent composite panels. The inner side of the sealing body is provided with two hanging ears installed from the outside to the inside, and the hanging ears are suitable for being hooked and fixed with the first and second hook bodies.

[0022] A rigid push structure is provided between the hanging ears, and the rigid push structure includes a guide sleeve fixedly mounted on the sealing body between the hanging ears, a spiral guide groove is provided on the side of the guide sleeve along the axial direction, and a horizontal locking groove is provided on the side of the spiral guide groove away from the sealing body;

[0023] A guide post is installed inside the guide sleeve, and a pin is fixed on the guide post. The pin is movably arranged in the spiral guide groove, and a return spring is provided between the guide post inside the guide sleeve and the root of the guide sleeve;

[0024] A support is rotatably mounted on the guide post located outside the guide sleeve.

[0025] Preferably, the thickness of the outer protective flame retardant board is 0.1 to 0.8 mm, and the inner filling insulation board is a rock wool board or a polystyrene board with a thickness of at least 50 mm.

[0026] Preferably, grooves are provided on opposite sides of the two hanging ears, and a round head suitable for moving along the grooves is provided on the telescopic plate.

[0027] Preferably, a sealing strip is provided on the telescopic plate, and the sealing strip is suitable for sealing between the telescopic plate and the inner wall of the hanging ear.

[0028] Preferably, a gasket is provided between the guide post and the return spring, and a ball bearing is provided between the gasket and the end of the guide post.

[0029] Preferably, the support member includes a fixed plate, on which two telescopic plates are mounted via springs, and the telescopic plates are adapted to correspond to the positions of the hanging ears.

[0030] Preferably, a water stop groove is provided on the side of the hook body 1 and the hook body 2 facing the sealing body, and the cross-section of the water stop groove is a circular arc groove with an arc greater than 180 degrees. The sealing body is provided with an anchor hole suitable for facing the circular arc groove, and the anchor hole is a T-shaped structure. The side of the sealing body is provided with a through hole and is connected to the anchor hole.

[0031] By applying waterproof glue at the seam, the waterproof glue will enter the arc groove. When the sealing body is crimped, the excess waterproof glue will enter the anchor hole and fill the anchor hole. At the same time, the excess waterproof glue can enter the side through the anchor hole to complete the waterproof treatment of the side, so that the overall waterproof glue layer has a multiple waterproof structure effect, and can further enhance the bonding strength between the sealing body and the hook body one and the hook body two.

[0032] Preferably, the partition body installation steps are as follows:

[0033] First, adjust the pin on the guide column from the horizontal locking groove into the spiral guide groove, squeeze the free ends of the two hanging ears against each other to reduce the distance between them, and the guide column will move along the spiral guide groove toward the side close to the sealing body through the pin, and at the same time, the support member will move toward the side close to the sealing body;

[0034] Secondly, after filling the joints with sealant and applying waterproof glue on the joints, immediately insert the partition with reduced ear spacing into the joints from the outside to the inside;

[0035] Finally, when the hanging ear passes through hook body 1 and hook body 2, the reset spring will squeeze the gasket and guide column outward to reset them, and the guide column will push the support member toward the side close to the shear wall through the pin shaft along the spiral guide groove. When the support member is reset to its initial state, the guide column will automatically enter the horizontal locking groove due to its rotational inertia, completing the locking and fixation of the support member along the length direction of the hanging ear.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] By employing a sandwich insulation board structure—a fireproof outer layer and thermal insulation within—the potential for the insulation layer to ignite upon contact with fire is eliminated. The "independent panel" construction also avoids the problems of rapid spread of continuous combustion and stress release. Partitions are employed at the joints, providing both flame-retardant partitioning and supporting and connecting adjacent insulation boards. The partitions are equipped with hooks that are installed from the outside in and securely connected to the insulation boards. Sealant is filled into the joints, and the rigid push-up structure on the partitions maintains the sealant while ensuring the structural strength of the lugs, providing the required support. This connection offers high security, excellent integrity, and excellent wind and pressure resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0039] Figure 2 for Figure 1 Schematic diagram of the overall structure without filling of sealant;

[0040] Figure 3 for Figure 1 Cross-sectional view of the overall structure of the middle partition;

[0041] Figure 4 for Figure 3 Diagram of the connection between the guide post, gasket and return spring;

[0042] Figure 5 for Figure 1 Schematic diagram of the overall structure of the guide sleeve;

[0043] Figure 6 It is a cross-sectional view of the overall structure of another type of partition;

[0044] Figure 7 for Figure 6 a cross-sectional view of the middle support member;

[0045] Figure 8 This is a schematic diagram of the partial structure of hook body 1, hook body 2 and sealing body in one embodiment. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0047] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0048] Example 1

[0049] like Figures 1 to 3 、 Figure 5 As shown, a high-rise building exterior wall insulation layer construction process, the construction steps include:

[0050] Step 1: Cleaning the base layer 1

[0051] Clean the remaining dust, release agent oil stains and plaster hollow areas on the concrete wall;

[0052] Remove the cracked concrete blocks, inclusions and hollows at the joints of the shear walls and repair them;

[0053] Window sills, eaves and overhangs are graded with cement mortar at a slope of 2%, all openings on the exterior walls are densely filled, and the exterior wall surface flatness meets the requirements;

[0054] Step 2: Roughening the cement slurry

[0055] The wall surface of the base 1 is roughened with 1:1 construction glue cement slurry. When roughening, the base 1 should be watered with appropriate amount of water and the roughening should be uniform.

[0056] Step 3: Cement mortar leveling

[0057] Before cement mortar leveling, according to the building facade design and external wall insulation technical requirements, the horizontal and vertical control lines of external doors and windows, expansion lines, and decorative seams are marked on the wall surface, and vertical reference steel lines are hung at the inner and outer corners of the building's external walls and other necessary locations;

[0058] According to the control line, the mortar cakes are made and the reinforcement is punched. The distance between the mortar cakes is 1.5 meters. After the mortar cakes are dry, the leveling layer is completed in two times. The average thickness of the leveling layer is 2 cm, and the leveling layer 2 is obtained;

[0059] Step 4: Insulation board construction

[0060] On the leveling layer 2, according to the requirements of the exterior wall construction drawing, the insulation board installation edge line and anchor point drilling are popped out, and the connecting ear plate on the side of the insulation board 3 is installed in the hole at the corresponding anchor point through the anchor bolt. The hole needs to be treated with glue;

[0061] The insulation board 3 includes an inner filling insulation board 31 and an outer protective flame retardant board 32. The outer protective flame retardant board 32 seals and wraps the inner filling insulation board 31. A connecting ear plate 33 is provided on the left and upper side close to the shear wall, a hook plate 1 34 is provided on the side away from the shear wall, and a hook plate 2 35 is provided on the right and lower side away from the shear wall.

[0062] A composite panel 36 is provided on the outside of the outer protective flame retardant plate;

[0063] Step 5: Filling and partitioning

[0064] When installing a new insulation board 3 on the side of the installed insulation board 3, it is necessary to fit the hook plate 2 35 to the side of the corresponding connecting ear plate 33 and fix it with anchor bolts. After the installation is completed, a joint will appear between the two insulation boards 3. The joint is formed by the connecting ear plate 33, the hook plate 1 34, the hook plate 2 35, and the outer protective flame retardant board 32.

[0065] Fill the joint with sealant and apply waterproof glue at the joint opening, insert the partition body 4, which includes a sealing body 41 that is press-fitted with waterproof glue on the outside of the hook body 1 34 and the hook body 2 35 and is suitable for being installed between two adjacent composite panels 36. The inner side of the sealing body is provided with two hanging ears 42 that are installed from the outside to the inside. The hanging ears 42 are suitable for being hooked and fixed with the hook body 1 34 and the hook body 2 35;

[0066] A rigid push structure is provided between the lugs 42. The rigid push structure includes a guide sleeve 43 fixedly mounted on the sealing body between the lugs 42. A spiral guide groove 44 is provided on the side of the guide sleeve 43 along the axial direction, and a horizontal locking groove 45 is provided on the side of the spiral guide groove 44 away from the sealing body 41.

[0067] A guide post 46 is installed inside the guide sleeve 43. A pin 47 is fixed to the guide post 46. The pin 47 is movably arranged in the spiral guide groove 44. A return spring 48 is provided between the guide post 46 inside the guide sleeve 43 and the root of the guide sleeve 43.

[0068] A support member 49 is rotatably mounted on the guide post 46 located outside the guide sleeve 43 .

[0069] By employing a sandwich insulation board structure—a fireproof outer layer and thermal insulation within—the potential for the insulation layer to ignite upon contact with fire is eliminated. The "independent panel" construction also avoids the problems of rapid spread of continuous combustion and stress release. Partitions are employed at the joints, providing both flame-retardant partitioning and supporting and connecting adjacent insulation boards. The partitions are equipped with hooks that are installed from the outside in and securely connected to the insulation boards. Sealant is filled into the joints, and the rigid push-up structure on the partitions maintains the sealant while ensuring the structural strength of the lugs, providing the required support. This connection offers high security, excellent integrity, and excellent wind and pressure resistance.

[0070] Based on the above embodiment, the following improvements are made: Figure 1 and Figure 2 As shown, the thickness of the outer protective flame retardant board 32 is 0.1-0.8 mm, and the inner filling insulation board 31 is a rock wool board or a polystyrene board with a thickness of at least 50 mm.

[0071] Based on the above embodiment, the following improvements are made: Figure 6 and Figure 7 As shown, the support member 49 includes a fixed plate 491, on which two telescopic plates 492 are mounted via springs 493. The telescopic plates 492 are adapted to correspond to the positions of the hanging ears 42, and are adapted to reduce the resistance of squeezing the hanging ears 42 to reduce the distance between them.

[0072] Based on the above embodiment, the following improvements are made: Figure 3 and Figure 6 As shown, grooves 421 are provided on opposite sides of the two hanging ears 42, and a round head suitable for moving along the grooves 421 is provided on the telescopic plate 492. When the two hanging ears 42 are squeezed to reduce the distance between them, the telescopic plate 492 is prevented from shifting.

[0073] Based on the above embodiment, the following improvements are made: a sealing strip is provided on the telescopic plate 492, which is suitable for sealing between the telescopic plate 492 and the inner wall of the hanging ear 42, and is suitable for ensuring that the sealant cannot enter the gap between the support member 49 and the sealing body 41, thereby ensuring a rigid pushing sealing effect.

[0074] Based on the above embodiment, the following improvements are made: Figure 5 As shown, a gasket 410 is provided between the guide post 46 and the return spring 48, and a ball bearing is provided between the gasket 410 and the end of the guide post 46 to reduce the torsional shear force during the rotation process.

[0075] Based on the above embodiment, the following improvements are made: Figure 8As shown, the hook body 1 34 and the hook body 2 35 are provided with a water stop groove 37 on the side facing the sealing body 41. The cross section of the water stop groove 37 is a circular arc groove with an arc greater than 180 degrees. The sealing body 71 is provided with an anchor hole suitable for facing the circular arc groove. The anchor hole is a T-shaped structure. The side of the sealing body 71 is provided with a through hole and is connected to the anchor hole.

[0076] By applying waterproof glue at the seam, the waterproof glue will enter the arc groove. When the sealing body 41 is crimped, the excess waterproof glue will enter the anchor hole and fill the anchor hole. At the same time, the excess waterproof glue can enter the side through the anchor hole to complete the waterproof treatment of the side, so that the overall waterproof glue layer has a multiple waterproof structure effect, and can further enhance the bonding strength of the sealing body 41 and the hook body 1 34 and the hook body 2 35.

[0077] Based on the above embodiment, the following improvements are made: the steps for installing the partition body 4 are as follows:

[0078] First, the pin 47 on the guide column 46 is adjusted to move from the horizontal locking groove 45 into the spiral guide groove 44, squeezing the free ends of the two hanging ears 42 against each other to reduce the distance between them. The guide column 46 will move along the spiral guide groove 44 toward the sealing body 41 via the pin 47, and the support member 49 will also move toward the sealing body 41.

[0079] Secondly, after the sealant is filled in the joints and the waterproof glue is applied to the joints, the partition body 41 with the reduced spacing between the hanging ears 42 is immediately inserted into the joints from the outside to the inside;

[0080] Finally, when the ear 42 passes through the hook body 1 34 and the hook body 2 35, the reset spring 48 will squeeze the gasket 410 and the guide column 46 outward to reset them, and the guide column 46 will push the support member 49 toward the side close to the shear wall along the spiral guide groove 44 through the pin shaft 47. When the support member 49 is reset to the initial state, the guide column 46 will automatically enter the horizontal locking groove 45 due to its rotational inertia, completing the locking and fixation of the support member 49 along the length direction of the ear 42.

[0081] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacement may be a replacement of a portion of a structure, device, or method step, or it may be a complete technical solution. Any equivalent replacement or modification based on the technical solution and inventive concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A construction process for the thermal insulation layer of the exterior wall of a high-rise building, characterized in that: The construction steps include: Step 1: Cleaning the base Clean the remaining dust, release agent oil stains and plaster hollow areas on the concrete wall; Remove the cracked concrete blocks, inclusions and hollows at the joints of the shear walls and repair them; Window sills and eaves are graded with cement mortar at a slope of 2%, all openings on the exterior walls are densely filled, and the exterior wall surface flatness meets the requirements; Step 2: Roughening the cement slurry The base wall should be roughened with 1:1 construction glue cement slurry. The base should be watered with appropriate amount of water and the roughening should be uniform. Step 3: Cement mortar leveling Before cement mortar leveling, according to the building facade design and external wall insulation technical requirements, the horizontal and vertical control lines of external doors and windows, expansion lines, and decorative seams are marked on the wall surface, and vertical reference steel lines are hung at the inner and outer corners of the building's external walls and other necessary locations; Make mortar cakes and punch reinforcement according to the drawn control line, with a spacing of 1.5 meters between mortar cakes. After the mortar cakes are dry, the leveling layer is completed in two passes with an average thickness of 2 cm to obtain the leveling layer; Step 4: Insulation board construction On the leveling layer, according to the requirements of the exterior wall construction drawings, the insulation board installation edge line and anchor point drilling are marked. The connecting ear plates on the side of the insulation board are installed in the holes at the corresponding anchor points through the anchor bolts. The holes need to be treated with glue. The insulation board includes an inner filling insulation board and an outer protective flame retardant board, the outer protective flame retardant board seals and wraps the inner filling insulation board, and a connecting ear plate is provided on the left and upper side close to the shear wall, a hook plate 1 is provided on the side away from the shear wall, and a hook plate 2 is provided on the right and lower side away from the shear wall; A composite panel is provided on the outer side of the outer protective flame retardant board; Step 5: Filling and partitioning When installing a new insulation board on the side of the installed insulation board, it is necessary to fit the hook plate 2 onto the side of the corresponding connecting ear plate and fix it with anchor bolts. After the installation is completed, a joint will appear between the two insulation boards. The joint is formed by the connecting ear plate, hook plate 1, hook plate 2, and the outer protective flame retardant board. Fill the joint with sealant and apply waterproof glue at the joint opening, then insert the partition body, which includes a sealing body with waterproof glue pressed on the outer sides of the hook plate 1 and the hook plate 2 and suitable for being installed between two adjacent composite panels. The inner side of the sealing body is provided with two hanging ears installed from the outside to the inside, which are suitable for being hooked and fixed with the hook plate 1 and the hook plate 2; A rigid push structure is provided between the hanging ears, and the rigid push structure includes a guide sleeve fixedly mounted on the sealing body between the hanging ears, a spiral guide groove is provided on the side of the guide sleeve along the axial direction, and a horizontal locking groove is provided on the side of the spiral guide groove away from the sealing body; A guide post is installed inside the guide sleeve, and a pin is fixed on the guide post. The pin is movably arranged in the spiral guide groove, and a return spring is provided between the guide post inside the guide sleeve and the root of the guide sleeve; A support is rotatably mounted on the guide post located outside the guide sleeve.

2. A high-rise building exterior wall insulation layer construction process according to claim 1, characterized in that: The thickness of the outer protective flame retardant board is 0.1-0.8 mm, and the inner filling insulation board is a rock wool board or a polystyrene board with a thickness of at least 50 mm.

3. A high-rise building exterior wall insulation layer construction process according to claim 2, characterized in that: The support member includes a fixed plate, on which two telescopic plates are mounted via springs, and the telescopic plates are adapted to correspond to the positions of the hanging ears.

4. A high-rise building exterior wall insulation layer construction process according to claim 3, characterized in that: Grooves are arranged on opposite sides of the two hanging ears, and a round head suitable for moving along the grooves is arranged on the telescopic plate.

5. A high-rise building exterior wall insulation layer construction process according to claim 3, characterized in that: The telescopic plate is provided with a sealing strip, which is suitable for sealing between the telescopic plate and the inner wall of the hanging ear.

6. A high-rise building exterior wall insulation construction process according to claim 1, characterized in that: A gasket is additionally provided between the guide post and the return spring, and a ball bearing is arranged between the gasket and the end of the guide post.

7. The construction process for the external wall insulation layer of a high-rise building according to claim 1, characterized in that: The steps for installing the partition body are as follows: First, adjust the pin on the guide post from the horizontal locking groove into the spiral guide groove, squeezing the free ends of the two hanging ears together to reduce the distance between them. The guide post will move along the spiral guide groove toward the side close to the sealing body via the pin, and the support will also move toward the side close to the sealing body. Secondly, after filling the joints with sealant and applying waterproof glue on the joints, immediately insert the partition with reduced ear spacing into the joints from the outside to the inside; Finally, when the hanging ear passes through hook plate 1 and hook plate 2, the reset spring will squeeze the gasket and guide column outward to reset them, and the guide column will push the support member toward the side close to the shear wall along the spiral guide groove through the pin shaft. When the support member is reset to its initial state, the guide column will automatically enter the horizontal locking groove due to its rotational inertia, completing the locking and fixation of the support member along the length direction of the hanging ear.

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