Waterproof and moistureproof paving structure system and method for underground garage

Abstract

The underground garage waterproof and moistureproof paving structure system comprises a plurality of underground garage side walls, the underground garage side walls are L-shaped, waterproof ground beams are fixed to the bottoms of the inner side faces of the underground garage side walls, a plurality of supporting columns are fixed to the bottoms of the waterproof ground beams, and concave drainage grooves are fixed to the bottoms of the supporting columns; the concave drainage groove is located between the multiple underground garage side walls, and a plurality of sensing optical fibers are fixed to the inner wall of the concave drainage groove, the stability, drainage efficiency, self-repairing capacity and mechanical property of an underground structure are improved, the leakage risk is effectively reduced, the service life of the structure is prolonged, and the maintenance efficiency and accuracy are improved.

Description

Technical Field

[0001] The present invention relates to the field of waterproof and moisture-proof paving for underground garages, and specifically to a waterproof and moisture-proof paving structure system and method for underground garages. Background Art

[0002] Currently, a conventional basement floor typically includes a concrete cushion layer, a waterproof layer, a concrete structural floor, and a floor surface layer from bottom to top. Since the waterproof layer is usually an organic waterproof coiled material, it has low strength, is easily damaged during construction, has poor durability of organic substances, will age and break during long-term use, and the failure of one point will cause the waterproof effect of the entire surface to fail.

[0003] According to the disclosed patent 202411632878.7, a waterproof and moisture-proof paving structure system and method for an underground garage, the system includes a waterproof ground beam, a drainage ditch, and a paving structure. The paving structure includes a plain concrete layer, a flexible waterproof layer, a lower structure self-draining layer, a water isolation layer, an upper structure self-draining layer, a flexible supporting layer, a crack-resistant and moisture-proof layer, and a floor surface layer from bottom to top. Drainage detection systems are respectively provided in the upper structure self-draining layer and the lower structure self-draining layer; the method includes a monitoring method one for monitoring the damage of the flexible waterproof layer and a monitoring method two for monitoring the leakage of the crack-resistant and moisture-proof layer and the floor surface layer. The present invention can realize continuous monitoring of the damage of the flexible waterproof layer and the leakage of the crack-resistant and moisture-proof layer and the floor surface layer, and assist the staff to timely judge the location of the damage or leakage.

[0004] However, during the use process, for the traditional waterproof and moisture-proof paving structure system and method for underground garages, the construction sequence of setting the self-draining layer and the drainage detection system wiring is required, which has strict technical requirements for workers and a relatively long construction period. Moreover, once there is leakage in the multi-layer structure, it is necessary to check layer by layer (such as distinguishing whether it is the failure of the lower self-draining layer or the problem of the upper structure). When repairing, it is necessary to damage the surface layer material, and the repair cost and time cost are relatively high. Therefore, it is necessary to design a new technical solution to solve this problem. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, adapt to the actual needs, and provide a waterproof and moisture-proof paving structure system and method for underground garages, so as to solve the technical problems of the current traditional waterproof and moisture-proof paving structure system and method for underground garages, which require the construction sequence of setting the self-draining layer and the drainage detection system wiring, have strict technical requirements for workers, a relatively long construction period, and once there is leakage in the multi-layer structure, it is necessary to check layer by layer (such as distinguishing whether it is the failure of the lower self-draining layer or the problem of the upper structure), and when repairing, it is necessary to damage the surface layer material, and the repair cost and time cost are relatively high.

[0006] To achieve the object of the present invention, the technical solution adopted by the present invention is as follows: Design an underground garage waterproof and moisture-proof paving structure system, including a plurality of underground garage side walls. The plurality of underground garage side walls are L-shaped, and a waterproof ground beam is fixed to the bottom of the inner side surface thereof. A plurality of support columns are fixed to the bottom of the waterproof ground beam, and a concave drainage groove is fixed to the bottom of the plurality of support columns. The concave drainage groove is located between the plurality of underground garage side walls, and a plurality of sensing optical fibers are fixed to the inner wall of the concave drainage groove.

[0007] Preferably, a plain concrete layer is fixed to the top of the waterproof ground beam. A flexible waterproof layer is installed on the top of the plain concrete layer, a water isolation layer is installed on the top of the flexible waterproof layer, a crack-resistant and moisture-proof layer is installed on the top of the water isolation layer, and a floor surface layer is installed on the top of the crack-resistant and moisture-proof layer.

[0008] Preferably, a drainage ditch is installed between the underground garage side wall and the waterproof ground beam, the plain concrete layer, the flexible waterproof layer, the water isolation layer, the crack-resistant and moisture-proof layer and the floor surface layer.

[0009] Preferably, the asphalt base material is 60%-75%, the SBS modifier is 3%-10%, the matrix material is 10%-30%, the polymer material is 15%-25%, the plasticizer is 15%-25%, the filler is 10%-20%, the auxiliary agent is 1%-5%, the self-healing polymer is 2%-5%, the thermosensitive microcapsule is 2%-5%, the carbon nanotube is 1%-3%, and the repair agent B is 0.5%-2%.

[0010] Preferably, the asphalt base material is 61.5%, the SBS modifier is 3%, the matrix material is 10%, the polymer material is 14%, the plasticizer is 15%, the filler is 10%, the auxiliary agent is 1%, the self-healing polymer is 2%, the thermosensitive microcapsule is 2%, the carbon nanotube is 1%, and the repair agent B is 0.5%.

[0011] Preferably, the asphalt base material is 55, the SBS modifier is 10%, the matrix material is 10%, the polymer material is 20%, the plasticizer is 15%, the filler is 10%, the auxiliary agent is 3%, the self-healing polymer is 5%, the thermosensitive microcapsule is 5%, the carbon nanotube is 3%, and the repair agent B is 2%.

[0012] Preferably, the asphalt base material is petroleum asphalt or coal tar asphalt, the modifier SBS is styrene-butadiene-styrene block copolymer, the matrix material is base paper, polyester fiber fabric or glass fiber felt, the polymer material is polyvinyl chloride resin or ethylene propylene diene monomer rubber, the plasticizer is dioctyl phthalate, the filler is calcium carbonate or talcum powder, and the auxiliary agent is antioxidant and ultraviolet absorber.

[0013] Preferably, the thermosensitive microcapsule encapsulates a repair agent A and is released by thermal triggering, and the particle size is controlled within 50-100 μm. The repair agent B is dispersed inside the self-healing polymer.

[0014] Preferably, the repair agent A and the repair agent B are thermosetting epoxy resin and aminosilicone oligomer, respectively.

[0015] A method for waterproofing and moisture-proofing paving in an underground garage, using the waterproofing and moisture-proofing paving structure system for the underground garage, comprises the following steps:

[0016] S1. Base treatment and structural installation

[0017] Step 1.1: Clean the surface of the underground garage side walls, waterproof beams and support columns to ensure there is no slurry, oil stains and loose impurities;

[0018] Step 1.2: Install the L-shaped side walls according to the design requirements and secure the waterproof floor beams to the bottom of the inner side of the side walls, ensuring the levelness error is ≤ 2mm / 2m;

[0019] Step 1.3: Install support columns and secure the concave drain trough. Check the slope of the drain trough to ensure that the accumulated water flows naturally to the water collection well.

[0020] Step 1.4: Pour a plain concrete layer on top of the waterproof ground beam, vibrate and compact it, and then cure for ≥7 days;

[0021] S2. Construction of multi-layer waterproofing system

[0022] Step 2.1: Prepare the flexible waterproof layer material according to the ratio:

[0023] Material mixing order:

[0024] First, heat the asphalt base material to 160-180℃, add SBS modifier and stir for 30 minutes;

[0025] After cooling to 120°C, add carcass material, polymer material, and plasticizer in sequence and stir at high speed for 20 minutes;

[0026] Finally, filler, additive, self-healing polymer, thermosensitive microcapsules, carbon nanotubes, and healing agent B were added and stirred at low speed for 5 minutes to defoam;

[0027] Step 2.2: Apply the mixed material evenly on the surface of the plain concrete layer with a thickness of 2-3mm. After compaction, cover with isolation film and maintain for ≥48h.

[0028] Step 2.3: Lay the waterproof layer, anti-cracking and moisture-proof layer in sequence, and finally pour the floor surface layer;

[0029] S3. Drainage system debugging

[0030] Step 3.1: Install drainage ditches at the junction of the side wall and the waterproof layer, ensuring that the slope of the ditch bottom is consistent with the concave drainage groove, and the joints are sealed;

[0031] Step 3.2: Water injection test: After closing the drain, store water for 24 hours, and after observing no leakage, open the drain to simulate rainstorm conditions to verify the drainage efficiency.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0033] 1. The present invention adopts an L-shaped side wall setting, which together with the waterproof ground beam and the support column constitutes a stable three-point support, which can effectively disperse the pressure generated by groundwater, prevent the side wall from deforming or cracking due to uneven stress. At the same time, a concave drainage groove is provided at the bottom of the structure, which cooperates with the drainage ditch on the side wall to form a three-dimensional drainage system at multiple positions. Even if there is a small amount of leakage, the leaked water will directly flow into the concave drainage groove at the bottom, and the accumulated water will be drained into the sump through the drainage groove, thus greatly reducing the risk of the waterproof layer being soaked in water for a long time, effectively extending the service life of the entire structure. At the same time, multiple sensing optical fibers are also provided in the concave drainage groove. The sensing optical fibers have high sensitivity and accuracy, and can sense the position of the dripping water in real time. When the water drops at any position in the drainage groove, the sensing optical fibers can capture this signal and transmit the accurate position information to the staff, enabling the staff to quickly and accurately judge the specific position of the water leakage, so as to take targeted repair measures, greatly improving the repair efficiency and accuracy.

[0034] 2. When the flexible waterproof layer ruptures and leaks, the staff can actively heat the multi-layer structure. Due to the thermosensitive microcapsule sealant repair agent A, when the material is heated, the microcapsules rupture and release the repair agent, which can quickly fill large cracks or damaged areas, quickly repair the damage, and effectively prevent the further expansion of the cracks in the flexible waterproof layer. At the same time, since the self-healing polymer itself cooperates with the repair agent B to have the ability to flow and repair small damages, after cross-linking with the repair agent A, it can further enhance the strength and stability of the repair area, ensuring that the flexible waterproof layer can timely repair small damages during long-term use, avoiding the situation of leakage caused by the damage of the flexible waterproof layer during use, and there is no need to damage the multi-layer structure layer by layer to check problems, greatly simplifying the repair process and improving the repair efficiency.

[0035] 3. The carbon nanotubes in the present invention form a heat conduction network in the material, which not only reduces the threshold of heat-triggered repair, but also accelerates the repair process by quickly conducting heat. The heat conduction network of carbon nanotubes makes the repair process more rapid and effective, further reducing the leakage risk. At the same time, the carbon nanotubes themselves have high strength and high modulus, which can enhance the overall mechanical properties of the material and reduce the tendency of crack propagation. Description of the Drawings

[0036] Figure 1 is a schematic structural diagram of the present invention;

[0037] Figure 2 This is a schematic flow diagram of the present invention.

[0038] In the figure: 1. Side wall of underground garage; 2. Drainage ditch; 3. Waterproof ground beam; 4. Support column; 5. Concave drainage trough; 6. Sensing optical fiber; 7. Plain concrete layer; 8. Flexible waterproof layer; 9. Waterproof layer; 10. Crack-resistant and moisture-proof layer; 11. Floor surface layer. Specific embodiments

[0039] The present invention will be further described below in conjunction with the drawings and embodiments:

[0040] A waterproof and moisture-proof paving structure system for an underground garage, see Figures 1 to 2 , including a plurality of side walls 1 of the underground garage. The plurality of side walls 1 of the underground garage are L-shaped, and a waterproof ground beam 3 is fixed to the bottom of the inner side surface thereof. A plurality of support columns 4 are fixed to the bottom of the waterproof ground beam 3. A plurality of support columns 4 are fixed to the bottom of a concave drainage trough 5. The concave drainage trough 5 is located between the plurality of side walls 1 of the underground garage. A plurality of sensing optical fibers 6 are fixed to the inner wall of the concave drainage trough 5.

[0041] Specifically, a plain concrete layer 7 is fixed to the top of the waterproof ground beam 3. A flexible waterproof layer 8 is installed on the top of the plain concrete layer 7. A waterproof layer 9 is installed on the top of the flexible waterproof layer 8. A crack-resistant and moisture-proof layer 10 is installed on the top of the waterproof layer 9. A floor surface layer 11 is installed on the top of the crack-resistant and moisture-proof layer 10.

[0042] More specifically, a drainage ditch 2 is installed between the side wall 1 of the underground garage and the waterproof ground beam 3, the plain concrete layer 7, the flexible waterproof layer 8, the waterproof layer 9, the crack-resistant and moisture-proof layer 10 and the floor surface layer 11.

[0043] Furthermore, asphalt base material 60%-75%, SBS modifier 3%-10%, carcass material 10%-30%, polymer material 15%-25%, plasticizer 15%-25%, filler 10%-20%, auxiliary agent 1%-5%, self-healing polymer 2%-5%, thermosensitive microcapsule 2%-5%, carbon nanotube 1%-3%, repair agent B 0.5%-2%.

[0044] Still further, asphalt base material 61.5%, SBS modifier 3%, carcass material 10%, polymer material 14%, plasticizer 15%, filler 10%, auxiliary agent 1%, self-healing polymer 2%, thermosensitive microcapsule 2%, carbon nanotube 1%, repair agent B 0.5%.

[0045] It should be noted that asphalt base material 55, SBS modifier 10%, carcass material 10%, polymer material 20%, plasticizer 15%, filler 10%, auxiliary agent 3%, self-healing polymer 5%, thermosensitive microcapsule 5%, carbon nanotube 3%, repair agent B 2%.

[0046] It should be noted that the asphalt base material is petroleum asphalt or coal tar asphalt, the modifier SBS is a styrene-butadiene-styrene block copolymer, the matrix material is base paper, polyester fiber fabric or fiberglass felt, the polymer material is polyvinyl chloride resin or ethylene propylene diene monomer rubber, the plasticizer is dioctyl phthalate, the filler is calcium carbonate or talcum powder, and the auxiliary agent is antioxidant and ultraviolet absorber.

[0047] It is worth introducing that the thermosensitive microcapsules are encapsulated with repair agent A, which is released by thermal triggering, and the particle size is controlled within 50-100 μm. Repair agent B is dispersed inside the self-healing polymer.

[0048] It is worth noting that repair agent A and repair agent B are thermosetting epoxy resin and amino silicone oligomer respectively.

[0049] A waterproof and moisture-proof paving method for underground garages, using the waterproof and moisture-proof paving structure system for underground garages, includes the following steps:

[0050] S1. Subgrade treatment and structure installation

[0051] Step 1.1: Clean the surfaces of the side walls 1 of the underground garage, the waterproof ground beams 3 and the support columns 4 to ensure that there is no floating slurry, oil stain or loose impurities.

[0052] Step 1.2: Install the L-shaped side walls according to the design requirements, and fix the waterproof ground beams 3 to the bottom of the inner side of the side walls to ensure that the level error ≤ 2 mm / 2 m.

[0053] Step 1.3: Install the support columns 4 and fix the concave drainage grooves 5, check the slope of the drainage grooves (recommended ≥ 0.5%), and ensure that the accumulated water naturally flows to the sump.

[0054] Step 1.4: Pour a plain concrete layer 7 (thickness ≥ 80 mm) on the top of the waterproof ground beams 3, vibrate it densely and cure it for ≥ 7 days.

[0055] S2. Construction of multi-layer waterproof system

[0056] Step 2.1: Prepare the materials for the flexible waterproof layer 8 according to the ratio (it needs to be stirred on site to ensure that each component is evenly dispersed):

[0057] Material mixing sequence:

[0058] First, heat the asphalt base material (60%-75%) to 160-180 °C, add the SBS modifier (3%-10%) and stir for 30 min.

[0059] After cooling to 120 °C, sequentially add the matrix material (10%-30%), the polymer material (15%-25%), the plasticizer (15%-25%), and stir at high speed for 20 min.

[0060] Finally, add filler (10%-20%), additives (1%-5%), self-healing polymer (2%-5%), thermosensitive microcapsules (2%-5%), carbon nanotubes (1%-3%), and repair agent B (0.5%-2%), and stir at low speed for 5 min to defoam;

[0061] Step 2.2: Uniformly coat the mixed material on the surface of the plain concrete layer 7, control the thickness to be 2-3 mm, cover with an isolation film after compaction, and cure for ≥48 h;

[0062] Step 2.3: Lay the water barrier layer 9 (such as HDPE film, with a lap width of ≥10 cm) and the crack-resistant and moisture-proof layer 10 (such as polymer cement mortar + fiberglass mesh) in sequence, and finally pour the floor surface layer 11 (fine aggregate concrete + wear-resistant aggregate, with a thickness of ≥50 mm);

[0063] S3. Drainage system commissioning

[0064] Step 3.1: Install the drainage ditch 2 at the junction of the side wall and the waterproof layer, ensure that the bottom slope of the ditch is connected to the concave drainage groove 5, and seal the connection;

[0065] Step 3.2: Water injection test: Store water for 24 h after closing the drainage outlet, open the drainage after observing no leakage, and simulate heavy rain conditions (≥100 mm / h) to verify the drainage efficiency.

[0066] Example 1

[0067] Self-healing waterproof layer with standard ratio

[0068] Material ratio:

[0069] Asphalt base material 61.5%, SBS modifier 3%, carcass material 10%, polymer material 14%, plasticizer 15%, filler 10%, additives 1%, self-healing polymer 2%, thermosensitive microcapsules 2%, carbon nanotubes 1%, repair agent B 0.5%.

[0070] Construction steps:

[0071] S1. Substrate treatment: After the L-shaped side wall is installed, the level error of the waterproof ground beam 3 is ≤1.5 mm / 2 m;

[0072] S2. Construction of the flexible waterproof layer 8: Heat the materials to 170°C for mixing, coat with a thickness of 2.5 mm, and cure for 72 h after compaction;

[0073] S3. Drainage system: Optimize the slope of the drainage ditch 2 to 0.8% and seamlessly connect it with the concave drainage groove 5.

[0074] Results:

[0075] 24-hour repair rate 82%, interfacial shear strength 1.6 MPa;

[0076] The thermal trigger temperature is 65°C, and the efficiency decay is <8% after 10 cycles.

[0077] There is no leakage in the water storage test, and the drainage efficiency reaches 130%.

[0078] Example 2

[0079] High-carbon nanotube enhanced heat conduction type

[0080] Material ratio:

[0081] 55% asphalt base material, 10% SBS modifier, 10% carcass material, 20% polymer material, 15% plasticizer, 10% filler, 3% additive, 5% self-healing polymer, 5% thermosensitive microcapsule, 3% carbon nanotube, 2% repair agent B.

[0082] Construction steps:

[0083] S1. Pre-dispersion of carbon nanotubes: Use ultrasonic treatment for 30 minutes to ensure uniform dispersion;

[0084] S2. Layered coating: The flexible waterproof layer is coated in two times with a total thickness of 3 mm, and quartz sand is sprinkled in the middle to enhance the interlayer bonding.

[0085] Results:

[0086] The thermal trigger temperature drops to 55°C, and the repair rate increases by 40%;

[0087] The anti-seepage pressure is 0.8 MPa (no penetration in 72 hours), and there are no cracks in the low-temperature bending (-20°C);

[0088] The cost increases by 12%, but the long-term maintenance cost is reduced by 50%.

[0089] Example 3

[0090] Quick repair type

[0091] Material ratio:

[0092] 60% asphalt base material, 5% SBS modifier, 15% carcass material, 12% polymer material, 18% plasticizer, 8% filler, 2% additive, 3% self-healing polymer, 3% thermosensitive microcapsule, 2% carbon nanotube, 1% repair agent B.

[0093] Construction steps:

[0094] S1. Replace repair agent B with a polyethylene glycol copolymer to increase the density of polar groups;

[0095] S2. Add a diversion groove to the drainage ditch 2 to enhance the water accumulation guiding effect.

[0096] Results:

[0097] The microdamage repair efficiency is increased by 60%, and the healing area at 24 h > 90%;

[0098] The interfacial shear strength is 1.8 MPa, but the material cost is increased by 18%.

[0099] Example 4

[0100] Low-cost and environmentally friendly

[0101] Material ratio:

[0102] 70% asphalt base material, 2% SBS modifier, 12% carcass material, 10% polymer material, 15% plasticizer, 15% filler, 1% additive, 2% self-healing polymer, 2% thermosensitive microcapsule, 0.5% carbon nanotube, 0.5% repair agent B.

[0103] Construction steps:

[0104] S1. Use coal tar pitch to replace petroleum pitch, reducing the cost by 30%;

[0105] S2. Simplify the drainage system, cancel the sidewall drain 2, and only retain the bottom concave groove.

[0106] Results:

[0107] The initial cost is reduced by 25%, but the repair efficiency drops to 70%;

[0108] The impermeability pressure is 0.5 MPa, suitable for low water pressure areas.

[0109] Comparative example 1

[0110] No self-healing system (traditional waterproof layer)

[0111] Material ratio:

[0112] 75% asphalt base material, 5% SBS modifier, 15% carcass material, 5% polymer material, 10% plasticizer, 15% filler, 2% additive.

[0113] Construction steps:

[0114] Omit the self-healing polymer, thermosensitive microcapsule and repair agent B, and the others are the same as in Example 1.

[0115] Results:

[0116] No repair ability, the prefabricated crack (200 μm) does not heal in 24 h;

[0117] Leakage occurs during the 72-h water storage test, and the impermeability pressure is only 0.3 MPa.

[0118] Comparative example 2

[0119] Carbon nanotube-free thermal conduction network

[0120] Material ratio:

[0121] Same as Example 1, but remove 1% of carbon nanotubes.

[0122] Construction steps:

[0123] The contents of Repair Agent A / B remain unchanged, and the particle size of the thermosensitive microcapsules increases to 150 μm.

[0124] Results:

[0125] The thermal trigger temperature rises to 85 °C, and the repair efficiency decreases by 45%;

[0126] The interfacial shear strength is 1.2 MPa, and the efficiency decay is > 30% after 10 cycles.

[0127] The specific comparison data are as follows in the table:

[0128]

[0129]

[0130] In summary, through comparison, it can be seen that Example 2 has the best repair speed and durability in extreme environments, Example 3 is suitable for scenarios with rapid response requirements, Example 4 meets the basic anti-seepage requirements at low cost, and the comparative example verifies the necessity of the self-repair system and carbon nanotubes for performance improvement.

[0131] In addition, the components designed in the present invention are all common standard components or components known to those skilled in the art. Their structures and principles can all be learned by those skilled in the art through technical manuals or by conventional experimental methods. Those skilled in the art can fully implement them without further elaboration. The content protected by the present invention does not involve improvements to the internal structure and method.

[0132] The embodiments disclosed in the present invention are preferred embodiments, but are not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not depart from the spirit of the present invention, they are within the protection scope of the present invention.

Claims

1. An underground garage waterproof and moisture-proof paving structure system, comprising a plurality of underground garage side walls (1), characterized in that, A plurality of the underground garage side walls (1) are L-shaped, and a waterproof ground beam (3) is fixed to the bottom of the inner side surface thereof. A plurality of support columns (4) are fixed to the bottom of the waterproof ground beam (3), and a concave drainage groove (5) is fixed to the bottom of the plurality of support columns (4). The concave drainage groove (5) is located between the plurality of underground garage side walls (1), and a plurality of sensing optical fibers (6) are fixed to the inner wall of the concave drainage groove (5).

2. The waterproof and moisture-proof paving structure system for an underground garage according to claim 1, characterized in that, A plain concrete layer (7) is fixed to the top of the waterproof ground beam (3). A flexible waterproof layer (8) is installed on the top of the plain concrete layer (7), a water isolation layer (9) is installed on the top of the flexible waterproof layer (8), a crack-resistant moisture-proof layer (10) is installed on the top of the water isolation layer (9), and a floor surface layer (11) is installed on the top of the crack-resistant moisture-proof layer (10).

3. The waterproof and moisture-proof paving structure system for an underground garage according to claim 1, wherein A drainage ditch (2) is installed between the underground garage side wall (1) and the waterproof ground beam (3), the plain concrete layer (7), the flexible waterproof layer (8), the water isolation layer (9), the crack-resistant moisture-proof layer (10) and the floor surface layer (11).

4. The waterproof and moisture-proof paving structure system for an underground garage according to claim 2, characterized in that, The flexible waterproof layer (8) comprises 60%-75% of asphalt base material, 3%-10% of SBS modifier, 10%-30% of carcass material, 15%-25% of polymer material, 15%-25% of plasticizer, 10%-20% of filler, 1%-5% of auxiliary agent, 2%-5% of self-healing polymer, 2%-5% of thermosensitive microcapsule, 1%-3% of carbon nanotube, and 0.5%-2% of repair agent B.

5. The waterproof and moisture-proof paving structure system for an underground garage as described in claim 4, wherein the asphalt Base material 61.5%, SBS modifier 3%, carcass material 10%, polymer material 14%, plasticizer 15%, filler 10%, auxiliary agent 1%, self-healing polymer 2%, thermosensitive microcapsule 2%, carbon nanotube 1%, repair agent B 0.5%.

6. The waterproof and moisture-proof paving structure system for an underground garage as claimed in claim 4, characterized in that asphalt Base material 55, SBS modifier 10%, carcass material 10%, polymer material 20%, plasticizer 15%, filler 10%, auxiliary agent 3%, self-healing polymer 5%, thermosensitive microcapsule 5%, carbon nanotube 3%, repair agent B 2%.

7. The waterproof and moisture-proof paving structure system for an underground garage according to claim 4, characterized in that, The asphalt base material is petroleum asphalt or coal tar asphalt, the modifier SBS is styrene-butadiene-styrene block copolymer, the carcass material is base paper, polyester fiber fabric or fiberglass felt, the polymer material is polyvinyl chloride resin or ethylene propylene diene monomer rubber, the plasticizer is dioctyl phthalate, the filler is calcium carbonate or talcum powder, and the auxiliary agent is antioxidant and ultraviolet absorber.

8. The waterproof and moisture-proof paving structure system for an underground garage according to claim 4, wherein, The thermosensitive microcapsule encapsulates a repair agent A, which is released by thermal trigger, and the particle size is controlled within 50-100 μm. The repair agent B is dispersed inside the self-healing polymer.

9. The waterproof and moisture-proof paving structure system for an underground garage according to claim 8, characterized in that, The repair agent A and the repair agent B are thermosetting epoxy resin and amino siloxane oligomer respectively.

10. A waterproof and moisture-proof paving method for underground garages, characterized in that, When using the underground garage waterproof and moisture-proof paving structure system according to any one of claims 1-9, the following steps are included: S1. Substrate treatment and structure installation Step 1.1: Clean the surfaces of the underground garage side wall (1), the waterproof ground beam (3) and the support column (4) to ensure that there is no floating slurry, oil stain and loose impurities; Step 1.2: Install the L-shaped side wall according to the design requirements, and fix the waterproof ground beam (3) to the bottom of the inner side of the side wall to ensure that the level error ≤ 2 mm / 2 m; Step 1.3: Install the support column (4) and fix the concave drainage trough (5), check the slope of the drainage trough to ensure that the accumulated water naturally flows to the sump; Step 1.4: Pour a plain concrete layer (7) on the top of the waterproof ground beam (3), cure for ≥ 7 days after vibrating thoroughly; S2. Construction of multi-layer waterproof system Step 2.1: Prepare the materials for the flexible waterproof layer (8) according to the ratio: Material mixing sequence: First, heat the asphalt base material to 160 - 180 °C, add the SBS modifier and stir for 30 min; After cooling to 120 °C, add the carcass material, polymer material, and plasticizer in sequence, and stir at high speed for 20 min; Finally, add the filler, auxiliary agent, self-healing polymer, thermosensitive microcapsule, carbon nanotube, and repair agent B, and stir at low speed for 5 min to defoam; Step 2.2: Uniformly coat the mixed material on the surface of the plain concrete layer (7), control the thickness to 2 - 3 mm, cover with an isolation film after compaction and cure for ≥ 48 h; Step 2.3: Lay the water barrier layer (9) and crack-resistant moisture-proof layer (10) in sequence, and finally pour the floor surface layer (11); S3. Commissioning of drainage system Step 3.1: Install the drainage ditch (2) at the junction of the side wall and the waterproof layer, ensure that the bottom slope of the ditch is connected to the concave drainage trough (5), and seal the connection; Step 3.2: Water injection test: Store water for 24 h after closing the drainage outlet, observe no leakage and then open the drainage, and verify the drainage efficiency under simulated heavy rain conditions.

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