Waterproof structure for bottom opening of first-layer glass curtain wall and construction method

Abstract

According to the technical scheme, the waterproof structure for the bottom opening of the first-layer glass curtain wall and the construction method are characterized by comprising the following steps that S1, construction of a cross beam at the bottom of the curtain wall is completed, and a working face is transferred; s2, scabbling and cleaning a base layer; s3, mounting and constructing a polytetrafluoroethylene pad; s4, pouring operation is conducted; s5, a gap between the bottom of the cross beam and the turned-over edge is filled with a polyurethane (PU) foaming agent in a filling mode; s6, waterproof coating coiled material construction; and S7, top metal pressing strip and waterproof closing-up are conducted. The surface of the polytetrafluoroethylene pad is highly lubricated and not adhered, sufficient space can be provided for sliding deformation between the curtain wall stand column and the embedded fastener, and overall internal stress balance of a large-area curtain wall is maintained. The PU foaming agent not only ensures the waterproof and moistureproof performance of the bottom opening of the curtain wall, but also provides sufficient deformation space for vertical deformation of the first-layer curtain wall, and maintains the overall internal stress balance of the large-area curtain wall.

Description

Technical Field

[0001] The invention relates to a waterproof structure and a construction method, and more particularly to a waterproof structure and a construction method for the bottom of a first-floor glass curtain wall. Background Art

[0002] At present, the bottom horizontal frame and floor structure of the first-floor glass curtain wall of most buildings are filled with thermal insulation rock wool, and the two sides are sealed with 1.5mm thick galvanized steel plates. Although this method takes into account the stress deformation of the first-floor glass curtain wall, it does not take into account the waterproof structure at the bottom. When the height difference between indoor and outdoor is small, it is very easy for water to return and moisture to occur here during rainy and snowy seasons, and there is a great risk of leakage.

[0003] If cast-in-place concrete is used to directly pour dense anti-embankment between the bottom horizontal frame of the glass curtain wall and the floor structure, the first-floor glass curtain wall columns and the bottom horizontal frame will be in direct contact with the flanged concrete, with no deformation space, which can easily lead to damage to the curtain wall components, and further cause stress in the front glass curtain wall, resulting in deformation of the panel, poor flatness, deformation of the glass image, or deformation of weak points such as the joints between the glass and horizontal and vertical bars, leading to damage.

[0004] In view of the above reasons, how to prevent the glass from being damaged due to deformation is exactly the problem considered in this application. Summary of the invention

[0005] In view of the shortcomings of the prior art, a waterproof structure and a construction method for the bottom of a first-floor glass curtain wall are provided, which can prevent the glass from being damaged due to deformation.

[0006] To achieve the above purpose, the following technical solution is provided: a construction method for a waterproof structure at the bottom of a first-floor glass curtain wall, comprising the following steps:

[0007] S1: The construction of the bottom beam of the curtain wall is completed and the work surface is handed over;

[0008] S2: Chiseling and cleaning of the base layer;

[0009] S3: Installation and construction of polytetrafluoroethylene pads;

[0010] S4: pouring operation;

[0011] S5: The gap between the bottom of the beam and the flange is filled with polyurethane (PU) foaming agent;

[0012] S6: Waterproof coating coil construction;

[0013] S7: Metal strip on top, waterproof closure.

[0014] Further, the pouring operation includes the following steps:

[0015] S1: Formwork;

[0016] S2: pouring C30 grouting material;

[0017] S3: demoulding.

[0018] In summary, the above technical solution has the following beneficial effects: polytetrafluoroethylene has excellent chemical stability, is difficult to react chemically with other substances, and has good anti-aging resistance. Wrapping the column with polytetrafluoroethylene pads can isolate concrete, prevent water and rust, and protect the key force-bearing structure of the curtain wall. The surface of the polytetrafluoroethylene pad is highly lubricated and non-adhesive, which can provide sufficient space for sliding deformation between the curtain wall column and the embedded fasteners, and maintain the overall internal stress balance of the large curtain wall.

[0019] A 10mm space is reserved between the bottom crossbeam and the bottom structure of the glass curtain wall, and is filled with PU polyurethane foaming agent, which has excellent properties of waterproof, dustproof, and anti-penetration, and has good filling and sealing, strong thermal insulation, excellent bonding, convenient construction, green and environmentally friendly, and excellent comprehensive performance. It not only ensures the waterproof and moisture-proof performance of the bottom of the curtain wall, but also provides sufficient deformation space for the vertical deformation of the first-floor curtain wall, maintaining the overall internal stress balance of the large curtain wall.

[0020] C30 grouting material is a high-strength grouting material with high strength and hardness, good fluidity, and can fill the small gaps between the formwork and the curtain wall columns by itself, ensuring the density and uniform quality of the components. It has micro-expansion during the hardening process, which helps to connect with the main structure and reduce cracks and gaps. And because of the use of high-quality materials and optimized mix ratio, C30 grouting material has excellent durability, can resist erosion in various environmental conditions, and extend its service life. C30 grouting material is used to cast the flange to ensure that the waterproof flange has sufficient waterproof density at the weak corner of the column, providing an effective waterproof base. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a side cross-sectional view of the invention;

[0022] Figure 2 It is a top cross-sectional view of the invention.

[0023] Reference numerals: 1. bracket assembly; 2. cushion assembly; 3. slurry layer; 4. casting mold assembly; 5. waterproof assembly;

[0024] 11. Aluminum veneer;

[0025] 21. Polytetraethylene pad;

[0026] 51. Non-curing rubber asphalt waterproof coating layer; 52. SBS modified asphalt chemical root-penetration-resistant waterproof membrane; 53. Aluminum alloy waterproof pressure strip; 54. Flashing end; 55. Cross-recessed pan head self-tapping screws; 56. Nails; 67. Galvanized steel plate. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0028] The construction method for the waterproof structure at the bottom of the first-floor glass curtain wall includes the following steps:

[0029] S1: The construction of the bottom beam of the curtain wall is completed and the work surface is handed over;

[0030] S2: Chiseling and cleaning of the base layer;

[0031] S3: Installation and construction of polytetrafluoroethylene pads;

[0032] S4: pouring operation;

[0033] S5: The gap between the bottom of the beam and the flange is filled with polyurethane (PU) foaming agent;

[0034] S6: Waterproof coating coil construction;

[0035] S7: Metal strip on top, waterproof closure.

[0036] Further, the pouring operation includes the following steps:

[0037] S1: Formwork;

[0038] S2: pouring C30 grouting material;

[0039] S3: demoulding.

[0040] Reference Figure 1-2 As shown, the waterproof structure for the bottom of the first-floor glass curtain wall includes a bracket assembly 1, a buffer pad assembly 2, a slurry layer 3, a casting mold assembly 4 and a waterproof assembly 5. The bracket assembly 1 is connected to the slurry layer 3 through the buffer pad assembly 2;

[0041] When the slurry layer 3 is not solidified, the casting mold assembly 4 is installed on the bracket assembly 1, and the casting mold assembly 4 is used to limit the movement of the slurry in the slurry layer 3, and the waterproof assembly 5 is separated from the slurry layer 3;

[0042] When the slurry layer 3 solidifies, the casting mold assembly 4 is separated from the bracket assembly 1 , and the waterproof assembly 5 is installed on the slurry layer 3 .

[0043] Furthermore, the support assembly 1 includes an aluminum plate 11 , and the buffer pad assembly 2 includes a polytetraethylene pad 21 , and the aluminum plate 11 and the polytetraethylene pad 21 are fixedly connected.

[0044] Furthermore, the thickness of the aluminum plate 11 is 3 mm, and the thickness of the polytetraethylene pad 21 is 3 mm.

[0045] Furthermore, the slurry layer 3 is made of C30 grouting material.

[0046] Furthermore, the waterproof component 5 includes a non-curing rubber asphalt waterproof coating layer 51 and an SBS modified asphalt chemical root-penetration-resistant waterproof membrane 52 , and the SBS modified asphalt chemical root-penetration-resistant waterproof membrane 52 is fixedly connected to the slurry layer 3 via the non-curing rubber asphalt waterproof coating layer 51 .

[0047] Furthermore, the waterproof component 5 also includes an aluminum alloy waterproof strip 53 and a flashing end 54 . The aluminum alloy waterproof strip 53 is fixedly connected to the slurry layer 3 , and the flashing end 54 is fixedly connected to the aluminum alloy waterproof strip 53 .

[0048] Furthermore, the waterproof component 5 also includes cross-slot pan head self-tapping screws 55, nails 56 and galvanized steel plates 67. The galvanized steel plates 67 are arranged between the slurry layer 3 and the SBS modified asphalt chemical root-resistant puncture waterproof membrane 52. The galvanized steel plates 67 are connected to the ground through the nails 56, and the galvanized steel plates 67 are connected to the slurry layer 3 through cross-slot pan head self-tapping screws.

[0049] Furthermore, the thickness of the galvanized steel plate 67 is 1.5 mm.

[0050] Polytetrafluoroethylene has excellent chemical stability, is difficult to react chemically with other substances, and has good anti-aging resistance. Wrapping the column with polytetrafluoroethylene pads can isolate the concrete, prevent water and rust, and protect the key force-bearing structure of the curtain wall. The surface of the polytetrafluoroethylene pad is highly lubricated and non-adhesive, which can provide sufficient space for sliding deformation between the curtain wall column and the embedded fasteners, and maintain the overall internal stress balance of the large curtain wall.

[0051] A 10mm space is reserved between the bottom crossbeam and the bottom structure of the glass curtain wall, and is filled with PU polyurethane foaming agent, which has excellent properties of waterproof, dustproof, and anti-penetration, and has good filling and sealing, strong thermal insulation, excellent bonding, convenient construction, green and environmentally friendly, and excellent comprehensive performance. It not only ensures the waterproof and moisture-proof performance of the bottom of the curtain wall, but also provides sufficient deformation space for the vertical deformation of the first-floor curtain wall, maintaining the overall internal stress balance of the large curtain wall.

[0052] C30 grouting material is a high-strength grouting material with high strength and hardness, good fluidity, and can fill the small gaps between the formwork and the curtain wall columns by itself, ensuring the density and uniform quality of the components. It has micro-expansion during the hardening process, which helps to connect with the main structure and reduce cracks and gaps. And because of the use of high-quality materials and optimized mix ratio, C30 grouting material has excellent durability, can resist erosion in various environmental conditions, and extend its service life. C30 grouting material is used to cast the flange to ensure that the waterproof flange has sufficient waterproof density at the weak corner of the column, providing an effective waterproof base.

[0053] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A construction method for a waterproof structure at the bottom of a first-floor glass curtain wall, characterized in that: The following steps are included: S1: The construction of the bottom beam of the curtain wall is completed and the work surface is handed over; S2: Chiseling and cleaning of the base layer; S3: Installation and construction of polytetrafluoroethylene pads; S4: pouring operation; S5: The gap between the bottom of the beam and the flange is filled with polyurethane (PU) foaming agent; S6: Waterproof coating coil construction; S7: Metal strip on top, waterproof closure.

2. The construction method for the bottom waterproof structure of the first-floor glass curtain wall according to claim 1 is characterized in that: The pouring operation includes the following steps: S1: Formwork; S2: pouring C30 grouting material; S3: demoulding.

3. The waterproof structure used for the bottom of the first-floor glass curtain wall is characterized by: It includes a bracket assembly, a buffer pad assembly, a slurry layer, a casting mold assembly and a waterproof assembly, and the bracket assembly is connected to the slurry layer through the buffer pad assembly; When the slurry layer is not solidified, the casting mold assembly is installed on the bracket assembly, and the casting mold assembly is used to limit the movement of the slurry in the slurry layer, and the waterproof assembly is separated from the slurry layer; When the slurry layer solidifies, the casting mold assembly is separated from the bracket assembly, and the waterproof assembly is installed on the slurry layer.

4. The waterproof structure for the bottom of the first-floor glass curtain wall according to claim 3 is characterized in that: The support assembly includes an aluminum single plate, the buffer pad assembly includes a polytetraethylene pad, and the aluminum single plate is fixedly connected to the polytetraethylene pad.

5. The waterproof structure for the bottom of the first-floor glass curtain wall according to claim 4 is characterized in that: The thickness of the aluminum single plate is 3 mm, and the thickness of the polytetraethylene pad is 3 mm.

6. The waterproof structure for the bottom of the first-floor glass curtain wall according to claim 3 is characterized in that: The slurry layer is made of C30 grouting material.

7. The waterproof structure for the bottom of the first-floor glass curtain wall according to claim 3 is characterized in that: The waterproof component includes a non-curing rubber asphalt waterproof coating layer and an SBS modified asphalt chemical root puncture resistant waterproof coiled material. The SBS modified asphalt chemical root puncture resistant waterproof coiled material is fixedly connected to the slurry layer through the non-curing rubber asphalt waterproof coating layer.

8. The waterproof structure for the bottom of the first-floor glass curtain wall according to claim 7 is characterized in that: The waterproof component also includes an aluminum alloy waterproof pressure strip and a flashing end. The aluminum alloy waterproof pressure strip is fixedly connected to the slurry layer, and the flashing end is fixedly connected to the aluminum alloy waterproof pressure strip.

9. The waterproof structure for the bottom of the first-floor glass curtain wall according to claim 8, characterized in that: The waterproof assembly also includes cross-slot pan head self-tapping screws, nails and galvanized steel plates. The galvanized steel plates are arranged between the slurry layer and the SBS modified asphalt chemical root-resistant puncture waterproof membrane. The galvanized steel plates are connected to the ground through nails, and the galvanized steel plates are connected to the slurry layer through cross-slot pan head self-tapping screws.

10. The waterproof structure for the bottom of the first-floor glass curtain wall according to claim 9, characterized in that: The thickness of the galvanized steel sheet is 1.5 mm.

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