Construction method for the end joint structure of the external wall coiled material waterproof layer

Abstract

The present invention discloses a construction method for the end connection structure of the external wall coiled material waterproof layer, which relates to the technical field of the end connection structure of the coiled material waterproof layer. In the present invention, a groove is reserved at the upper part of the external wall and a receiving head fixing structure is pre-embedded. The coiled material waterproof layer is wound around the receiving head fixing structure to form a closed end connection, without holes or damage at the end connection position, eliminating the leakage path of the coiled material. At the same time, the receiving head fixing structure is used to hold the coiled material, effectively preventing the coiled material from being torn due to its own weight and reducing the leakage risk. The groove is filled with sealant, and the closed end connection of the waterproof coiled material is completely wrapped by the sealant and the baffle plate, improving the anti-seepage effect.

Description

Technical Field

[0001] The present invention relates to the technical field of the closing structure of the coiled material waterproof layer, and particularly relates to a construction method for the closing structure of the coiled material waterproof layer on the exterior wall. Background Art

[0002] In super high-rise buildings, coiled material waterproof layers need to be constructed on the exterior walls of the roof machine room layer, parapet walls, and basement exterior walls. The closing of the waterproof layer is a weak link among them, which is related to the construction quality of the entire exterior wall waterproof system and is the key to preventing leakage of the exterior wall. Generally, the fixing method for the closing of the coiled material waterproof layer on the exterior wall is as follows: (1) The waterproof coiled material is laid to the height designed in the drawing, and then the end of the coiled material is sealed by hot melt paving, and then the end of the waterproof layer is covered with a metal pressing strip and fixed with cement nails to prevent falling off, such as the utility model patent with publication number CN214738869U and the invention application with publication number CN115897821A; (2) The waterproof coiled material is laid to the height designed in the drawing, and then a groove is reserved on the exterior wall, and then the coiled material is laid and the end is pasted into the groove and fixed with cement nails to prevent falling off, such as the utility model patent with publication number CN211666113U.

[0003] The above two methods have certain limitations: The fixing iron nails are easy to damage the waterproof coiled material, water seeps through the nail hole gaps, and the waterproof coiled material is prone to tearing after being punched, posing a potential leakage hazard. Summary of the Invention

[0004] In order to solve the technical problems such as easy damage of the waterproof layer, difficult control of the closing quality, and leakage paths of nail holes in the construction of the waterproof closing structure of the coiled material waterproof layer on the exterior walls of the machine room layer, parapet walls, and basement exterior walls in super high-rise buildings, the present invention provides a construction method for the closing structure of the coiled material waterproof layer on the exterior wall.

[0005] To achieve this technical purpose, the present invention adopts the following scheme:

[0006] A construction method for the closing structure of the coiled material waterproof layer on the exterior wall includes the following steps;

[0007] S1. Fabricate the closing fixing structure;

[0008] S2. After the exterior wall steel bars are tied, reserve a groove at the top, and tie the closing fixing structure to the steel bars around the groove in advance, and then pour the concrete exterior wall;

[0009] S3. When the strength of the concrete exterior wall reaches the designed strength requirement, use the hot paving process to lay the coiled material waterproof layer. The coiled material waterproof layer is laid from bottom to top and extends into the groove as a stubble. The upper part of the coiled material waterproof layer bypasses the closing fixing structure and surrounds the closing fixing structure. Then, the end of the coiled material waterproof layer is pasted to the root of the coiled material waterproof layer at the entrance of the groove to form a closed closing;

[0010] S4. Use a sealant gun to pour sealant into the groove to completely fill the remaining space in the groove.

[0011] S5. Before the sealant paste hardens, insert the upper end of the baffle into the sealant, and the lower part of the baffle extends below the closed end, ensuring that the baffle covers the outside of the closed end.

[0012] Or when pouring the concrete exterior wall in S2, tilt and fix the baffle in the concrete exterior wall above the inner side of the groove. At this time, the baffle is a flat plate; when constructing the coiled material waterproofing end, bend the baffle upward to ensure enough construction space; after the closed end is completed, bend the baffle downward so that the baffle covers the outside of the closed end.

[0013] S6. Lay a plastic film and / or a waterproof protective layer on the outside of the coiled material waterproof layer.

[0014] Furthermore, the end fixing structure includes a bracket, a support rod, a connecting rod, and an anchor bar. The bracket is an L-shaped right-angle bracket. The two right-angle sides of the L-shaped right-angle bracket are respectively fixed with anchor bars, and the anchor bars are tied to the exterior wall reinforcement. The bracket fits with the inner angle of the groove; both ends inside the bracket are respectively fixed with connecting rods, and a support rod is fixed between the connecting rods. The support rod is used for winding the coiled material waterproof layer.

[0015] Furthermore, the support rod is wrapped with a flexible protective layer.

[0016] Furthermore, the coiled material waterproof layer has two or more layers.

[0017] Furthermore, the baffle is made of a galvanized sheet bent into a slope shape and placed with the slope facing inward.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention reserves a groove in the upper part of the exterior wall and pre-buries an end fixing structure, winds the coiled material waterproof layer around the end fixing structure to form a closed end, there are no holes or damages at the end position, eliminating the leakage path of the coiled material; at the same time, the end fixing structure is used to hold the coiled material, effectively preventing the coiled material from being torn due to its own weight and reducing the leakage risk; the groove is filled with sealant, and the sealant and the baffle are used to completely wrap the closed end of the waterproof coiled material, improving the anti-seepage effect. Description of the Drawings

[0019] Figure 1 It is a construction structure diagram of the end structure of the coiled material waterproof layer on the exterior wall provided by the embodiment of the present invention;

[0020] Figure 2 is Figure 1 a partial enlarged view of part Ⅰ in

[0021] Figure 3 It is a schematic diagram of the end fixing structure provided by the embodiment of the present invention;

[0022] In the figure, the markings are: 1, exterior wall; 2, coiled material waterproof layer; 3, termination fixing structure; 31, anchor bar; 32, bracket; 33, connecting rod; 34, support rod; 4, sealant; 5, baffle; 6, waterproof protective layer. Specific implementation manner

[0023] To fully understand the purpose, features and effects of the present invention, the present invention will be described in detail through the following specific implementation manners, but the present invention is not limited thereto.

[0024] As Figures 1 to 3 shown, a construction method for the termination structure of the coiled material waterproof layer of the exterior wall provided by the invention is as follows:

[0025] S1. Fabricate the termination fixing structure 3: Use two steel plates with a certain thickness to be cut into small pieces as embedded plates, and weld the two embedded plates into an L-shaped right-angle frame, that is, the bracket 32; Anchor bars 31 are welded to the outer sides of the L-shaped right-angle frame respectively, connecting rods 33 are welded to the inner sides of both ends of the L-shaped right-angle frame respectively, the connecting rods 33 are fixedly connected to one end of the support rods 34 respectively, and rotatable steel pipe sleeves are sleeved on the support rods 34, and flexible protective layers, such as rubber and plastic cotton and foam cotton, are pasted and wrapped on the outer sides of the steel pipe sleeves.

[0026] S2. After the wall steel bars are tied, reserve a groove at the top, embed the termination fixing structure 3 in the concave groove in advance, and then pour the concrete exterior wall 1. The optimized method is: The cross-section of the groove is rectangular, which effectively prevents the water left on the wall from flowing into the groove.

[0027] S3. When the strength of the concrete exterior wall 1 reaches the designed strength requirement, use the hot paving process to lay the coiled material waterproof layer 2. The coiled material waterproof layer 2 is continuously paved from bottom to top and extends into the groove as a stubble. Then, the joint of the coiled material waterproof layer 2 is bypassed around the support rod 34 and the support rod 34 is surrounded, and then pasted at the root of the coiled material waterproof layer 2 at the groove opening to form a closed termination. The optimized method is: The coiled material waterproof layer 2 is more than two layers. First, lay the lower parts of the multiple coiled material waterproof layers 2, and then the joints of the multiple coiled material waterproof layers 2 are closed together for termination. The better method is: Foam rods are additionally arranged between the coiled material waterproof layer 2 and the flexible protective layer of the support rod 34 and between the coiled material waterproof layers 2 to play a role in buffering and preventing deformation.

[0028] Since the single layer of the waterproof coiled material is generally 10 catties per square meter and generally double layers are used, that is, more than 20 catties per square meter. Therefore, in the traditional method, the waterproof coiled material needs to be nailed to the wall with a pressing strip and nails to barely overcome its own weight. In this process, tearing is likely to occur at the nail holes. In this scheme, the support rod is used to wind the waterproof coiled material around the support rod, and the support rod is used to bear the weight of the waterproof coiled material. The bearing area is large, which effectively prevents tearing due to its own weight from falling, and reduces the leakage risk.

[0029] S4. Manually use a caulking gun to pour the sealant 4 into the groove, completely filling the remaining space in the groove, and forming an inward-receding eagle beak structure on the upper side of the closed head. In this way, even if water flows along the outside of the sealant, it will not flow into the position where the inner side of the end of the coiled material waterproof layer contacts the sealant, improving the anti-leakage effect.

[0030] S5. Cut a galvanized sheet into strips and bend it into a sloping plate with the groove facing inward; use the gently sloping galvanized sheet as the baffle 5.

[0031] During the process when the sealant 4 has not yet hardened, insert the upper end of the baffle 5 into the sealant 4 to ensure that the baffle 5 is buckled on the outside of the closed head of the coiled material waterproof layer. The lower part of the baffle 5 extends below the groove and closely adheres to the outside of the coiled material waterproof layer 2. When water seeps outside, the sloping shape of the baffle 5 is used to drain the water flow, preventing water from seeping into the groove and playing a dual waterproofing role.

[0032] Or use a flat galvanized sheet. After pouring the concrete exterior wall in S2, insert it obliquely from the upper side inside the groove into the concrete exterior wall. At this time, the flat galvanized sheet slopes downward and the lower end is lower than the lower edge of the groove. For the convenience of construction, after the concrete exterior wall reaches the designed strength, bend the flat galvanized sheet upward. At this time, carry out the operation of the end of the coiled material waterproof layer (i.e., S3) and pour the sealant (S4). After the sealant hardens, bend the flat galvanized sheet downward to form a baffle. The lower part of the baffle extends below the groove and closely adheres to the outside of the coiled material waterproof layer, eliminating the water seepage channel between the sealant and the inner wall of the groove.

[0033] S6. Lay a plastic film and a waterproof protective layer 6 on the outer surface of the coiled material waterproof layer 2.

[0034] The present invention has the following advantages: (1) It is convenient to implement, has no nail holes and no leakage paths, reducing the leakage risk; (2) It does not use nails for fixation, does not damage the coiled material, and the support rod holds the coiled material, effectively preventing tearing caused by self-weight sagging; (3) It is not affected by surrounding processes, the quality is easy to control, the processes are few, the efficiency is high, the cost is reduced, and the anti-seepage effect is good.

[0035] Finally, it should be noted that: The above-listed are only the preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and variations fall within the scope of the claims of the present invention and its equivalent technologies, they should all be considered within the protection scope of the present invention.

Claims

1. A construction method for the end treatment structure of the coiled material waterproof layer on the exterior wall, characterized in that, it includes the following steps; S1. Fabricate the end fixing structure; S2. After the exterior wall steel bars are tied, reserve a groove at the top, and tie the end fixing structure to the steel bars around the groove in advance, and then pour the concrete exterior wall; S3. When the strength of the concrete exterior wall reaches the designed required strength, use the hot-laying process to lay the coiled material waterproof layer. The coiled material waterproof layer is laid from bottom to top and extends into the groove as a stub. The upper part of the coiled material waterproof layer bypasses the end fixing structure and surrounds the end fixing structure. Then, paste the end of the coiled material waterproof layer to the root of the coiled material waterproof layer at the entrance of the groove to form a closed end; S4. Use a glue gun to pour sealant into the groove to fill all the remaining space in the groove; S5. Insert the upper end of the baffle into the sealant during the process when the sealant has not hardened yet. The lower part of the baffle extends below the closed end to ensure that the baffle covers the outside of the closed end; S6. Lay a plastic film and / or a waterproof protective layer on the outside of the coiled material waterproof layer; The end fixing structure includes a bracket, a support rod, a connecting rod and an anchor bar. The bracket is an L-shaped right-angle frame. The two right-angle sides of the L-shaped right-angle frame are respectively fixed with anchor bars. The anchor bars are tied to the exterior wall steel bars. The bracket fits with the inner angle of the groove. Connecting rods are respectively fixed at both ends inside the bracket, and a support rod is fixed between the connecting rods. The support rod is used for winding the coiled material waterproof layer; The baffle is made of galvanized sheet bent into a slope shape and placed with the slope facing inward.

2. The construction method for the end treatment structure of the coiled material waterproof layer on the exterior wall according to claim 1, characterized in that, a flexible protective layer is wrapped on the support rod.

3. The construction method for the end treatment structure of the coiled material waterproof layer on the exterior wall according to claim 1, characterized in that, the coiled material waterproof layer is two or more layers.

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