Prestressed anchor rod composite waterproof construction method and composite waterproof structure

Abstract

The invention relates to a waterproof technology, and provides a pre-stressed anchor rod composite waterproof construction method and a composite waterproof structure. The position of the waterline is analyzed, and the waterline is correspondingly closed. According to the waterproof and anti-leakage system and the construction method, through combination of multi-layer sealing and drainage dredging, leakage of the basement bottom plate is effectively prevented, the waterproof performance of a building is improved, and the service life of the building is prolonged. Compared with a conventional method, according to the method, the closed water blocking measure is used as a water plugging scheme for the part where leakage possibly occurs through theoretical analysis. Therefore, the anti-leakage work is more active and accurate, the maintenance cost is reduced, and the safety and economical efficiency of the building are improved. And a dredging mode is added while water plugging is carried out, so that a permanent use effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of basement waterproofing, in particular to a technology for targeted gap sealing to achieve waterproofing by analyzing the type of gap position. BACKGROUND

[0002] In existing construction projects, basement floor waterproofing is a key link, especially for structures involving anti-floating anchor rods. Since the anchoring end of the prestressed steel strand may have a risk of leakage, the waterproofing requirements are very high, and the current waterproofing methods are relatively simple and ineffective, causing delays in construction duration and affecting construction quality. Therefore, a new prestressed anchor rod composite waterproofing construction method is needed to improve waterproofing effectiveness and ensure long-term use of the building. SUMMARY

[0003] To solve the problems in the above-mentioned technology, the present application provides a prestressed anchor rod composite waterproofing construction, thereby solving the problem of easy gap leakage.

[0004] The present application first provides a method for prestressed anchor rod composite waterproofing construction, which includes the following steps:

[0005] Step 1: prestressed anchor rod construction, using a sleeve to protect the prestressed anchor rod, reserving a grouting pipe inside the sleeve, setting a cushion layer in the upper part of the prestressed anchor rod, and the structure floor above the cushion layer, and grouting to close after tensioning the prestressed anchor rod;

[0006] Step 2: analyze the position of the water line: after grouting, the cement grout hardens and four main water lines appear: the first water line is a small gap between the sleeve and the structure floor due to the shrinkage and hardening of the floor concrete; the second water line is a water line generated between the sleeve and the grouting inside the pipe; the third water line is a water line generated between the steel wires of the prestressed steel strand, as well as a water line generated between the prestressed steel strand and the grouting mortar; the fourth water line is a small gap between the post-construction protection layer of the upper anchor head and the original foundation concrete of the structure floor;

[0007] Step 3: close the first and second water lines: use a waterproof gasket to press between the anchor steel pad and the structure floor, fill the rigid contact surface, and use the pressure applied by the anchor steel pad to make the waterproof gasket fill the contact surface to achieve the purpose of stopping water;

[0008] Step 4: construction measures to close the third water line: use pressurized grouting for the grouting pipe to solve the leakage risk;

[0009] Step 5: construction measures to close the fourth water line: use micro-expanding fine stone concrete for the post-construction protection layer, use the expansion rate of the micro-expanding fine stone concrete to close the fourth water line 4 to achieve the effect of stopping leakage.

[0010] Preferably, in the pressurized grouting step, a seamless steel pipe is used to penetrate into the sleeve, and the inserted steel pipe at least meets the requirement of bearing 5MPa grouting pressure; the insertion length of the steel pipe is limited as follows: the top reaches above the top surface of the prestressed anchor grouting, and the bottom reaches the height position below the cushion layer.

[0011] Preferably, the sleeve uses a φ65mm metal bellows to ensure the grouting space.

[0012] Preferably, the method further comprises step 6: construction measures for draining water: construction of a water collecting capillary pipeline, in order to ensure the waterproof effect of the structural floor, a water collecting capillary pipeline is arranged on the structural floor, underground water permeating into the structural floor is guided into a water collecting pit through the water collecting capillary pipeline, and the underground water entering the building indoor through the building surface layer is blocked.

[0013] Preferably, a half DN80 PVC pipe with a wall thickness of 3.2mm is used to make the water accumulation capillary structure in combination with a 135-degree drain pipe joint.

[0014] The application further provides a prestressed anchor composite waterproof structure, which comprises:

[0015] a cushion layer;

[0016] a structural floor located above the cushion layer;

[0017] a prestressed anchor having a sleeve in which the grouting pipe and a plurality of prestressed steel wires are arranged; the prestressed anchor is pressurized and grouted through the grouting pipe; the upper end of the prestressed anchor is provided with an anchorage steel pad;

[0018] a waterproof gasket between the anchorage steel pad and the structural floor;

[0019] a post-pouring protective layer located above the structural floor, and the post-pouring protective layer is made of micro-expansion fine stone concrete.

[0020] Preferably, an elastic waterproof material layer is arranged between the cushion layer and the structural floor, and the elastic waterproof material layer is located around the outer wall of the sleeve.

[0021] a water-stopping rubber located inside the sleeve, the water-stopping rubber is sleeved and wrapped around the prestressed steel wires and the grouting pipe; the water-stopping rubber has two groups of upper and lower water-stopping rubbers.

[0022] Preferably, the steel pipe is a seamless steel pipe, and the inserted steel pipe at least meets the requirement of bearing 5MPa grouting pressure; the insertion length of the steel pipe is limited as follows: the top reaches above the top surface of the prestressed anchor grouting, and the bottom reaches the height position below the cushion layer.

[0023] Preferably, a water collecting capillary line is arranged on the structural floor slab to guide the underground water infiltrating into the structural floor slab into the water collecting pit through the water collecting capillary line, and the underground water is blocked from penetrating into the building indoor through the building surface layer;

[0024] Preferably, the water capillary line comprises an arc-shaped drain pipe, the arc-shaped drain pipe is filled with fine stones, and the arc-shaped drain pipe is fixed on the structural floor slab through a pipe clamp.

[0025] The present application has the following beneficial effects:

[0026] 1. The waterproof and anti-leakage system and the construction method can effectively prevent the basement floor from leaking by combining multi-layer sealing and drainage, and improve the waterproof performance and service life of the building.

[0027] 2. Compared with the conventional method, the present application can theoretically analyze the possible leakage positions and adopt the water blocking scheme, so that the anti-leakage work is more active and accurate, the maintenance cost is reduced, and the safety and economy of the building are improved.

[0028] 3. The water blocking and drainage are combined to achieve permanent use effect. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic view of a prestressed anchor rod composite waterproof structure of the present application;

[0030] Figure 2 is Figure 1 is a structural schematic view of A-A cross-sectional view in the present application;

[0031] Figure 3 is a structural schematic view of four water lines of a prestressed anchor rod composite waterproof structure of the present application;

[0032] Figure 4 is a structural schematic view of a waterproof gasket angle of a prestressed anchor rod composite waterproof structure of the present application;

[0033] Figure 5 is a structural schematic view of a rubber gasket arrangement of a prestressed anchor rod composite waterproof structure of the present application;

[0034] Figure 6 is a structural schematic view of a reserved grouting pipe of a prestressed anchor rod composite waterproof structure of the present application;

[0035] Figure 7 is a structural schematic view of a water collecting capillary line joint of a prestressed anchor rod composite waterproof structure of the present application;

[0036] Figure 8This is a schematic diagram of the prestressed anchor rod composite waterproof structure arc-shaped drainage pipe of the present invention;

[0037] Figure 9 This is a diagram showing the fit between the water pipe connector and the water collection capillary line;

[0038] Figure 10 This is a diagram showing the relationship between the structural base plate and the curved drainage pipe.

[0039] Explanation of reference numerals in the attached figures:

[0040] 10 – Subbase; 20 – Structural base plate; 21 – Water collection capillary tube; 211 – Arc-shaped drainage pipe; 212 – Pipe clamp; 213 – Drainage pipe joint; 30 – Prestressed anchor; 31 – Sleeve; 32 – Grouting pipe; 33 – Prestressed steel strip; 34 – Anchor steel pad; 35 – Water-stop rubber; 36 – Anchor body; 37 – Centering bracket; 40 – Waterproof gasket; 50 – Bearing body; 60 – Post-cast protective layer; 70 – Elastic waterproof material layer; 1 – First water line; 2 – Second water line; 3 – Third water line; 4 – Fourth water line. Detailed Implementation

[0041] Example 1:

[0042] This invention first provides a method for constructing a prestressed anchor composite waterproofing system, which includes the following steps:

[0043] Step 1: As Figure 1 As shown, a prestressed anchor rod 30 is installed. The prestressed anchor rod 30 has a sleeve 31, and the grouting pipe 32 and multiple prestressed steel lines 33 are installed inside the sleeve 31. Cement grout is injected through the grouting pipe 32 to fill the internal space of the prestressed anchor rod 30. The upper end of the prestressed anchor rod 30 has an anchor steel pad 34 (anchor head part), and the bottom of the anchor steel pad 34 is pressed against the upper surface of the structural base plate 20. The bottom of the prestressed anchor rod 30 is a bearing body 50. The lower middle part of the prestressed anchor rod 30, i.e., below the structural base plate 20, also has an anchor rod body 36. The anchor rod body 36 is outside the sleeve 31. Cement grout is filled between the anchor rod body 36 and the sleeve 31. The middle part of the prestressed anchor rod 30 has multiple centering supports 37, which position and engage the grouting pipe 32 and multiple prestressed steel lines 33.

[0044] The prestressed anchor rod 30 is protected by a sleeve 31. A grouting pipe 32 is reserved in the sleeve 31. The upper middle part of the prestressed anchor rod 30 is a cushion layer 10. Above the cushion layer 10 is the structural base plate 20. Above the structural base plate 20 is the post-cast protective layer 60. The prestressed anchor rod 30 is sealed by grouting after tensioning.

[0045] The existing prestressed anchor rod 30 construction structure is as follows: after the position of the prestressed anchor rod 30 is selected, the cushion layer 10, the structural bottom plate 20 and the post-poured protection layer 60 are sequentially arranged from bottom to top, and the structural bottom plate 20 and the post-poured protection layer 60 are both concrete structures and are poured in batches.

[0046] Step 2: as shown in Figure 3 , the position of the water line is analyzed: after grouting (the grouting process includes pouring of the structural bottom plate 20, pouring of the post-poured protection layer 60 and pouring into the sleeve pipe 31 through the grouting pipe 32), the cement slurry loses water and hardens, and four main water lines appear: the first water line 1 is a tiny gap between the sleeve pipe 31 and the structural bottom plate 20 due to shrinkage and hardening of the concrete; the second water line 2 is a water line generated between the sleeve pipe 31 and the grouting pipe; the third water line 3 is a water line generated between the steel wires of the prestressed steel strand 33 and a gap between the prestressed steel strand 33 and the grouting mortar; and the fourth water line 4 is a tiny gap between the post-poured protection layer 60 of the upper end of the prestressed anchor rod 30 and the original foundation concrete of the structural bottom plate 20.

[0047] Step 3: as shown in Figure 4 , 5 , the first water line 1 and the second water line 2 are closed: a waterproof gasket 40 made of rubber is pressed between the anchor steel pad 34 and the structural bottom plate 20 to fill the rigid contact surface, and the pressure applied by the anchor steel pad 34 makes the waterproof gasket 40 fill the contact surface, achieving the purpose of water stop; preferably, a 3-5 mm rubber (or high polymer waterproof material) waterproof gasket 40 is pressed between the anchor steel pad 34 and the structural bottom plate 20; the bottom of the waterproof gasket 40 is the top end of the sleeve pipe 31, and the first water line 1 formed by the outer wall of the sleeve pipe 31 and the second water line 2 formed by the inner wall are directly isolated by the waterproof gasket 40.

[0048] Step 4: as shown in Figure 6 , the construction measures for closing the third water line 3: the grouting pipe 32 adopts pressurized grouting to solve the leakage risk; here, the pressurized grouting is used, which injects cement slurry with a larger pressure than ordinary pressure, so that the gap of the third water line 3 disappears.

[0049] Step 5: the construction measures for closing the fourth water line 4: the post-poured protection layer 60 adopts micro-expanding fine stone concrete, which uses the expansion rate of the micro-expanding fine stone concrete to close the fourth water line 4, achieving the effect of preventing leakage; here, the micro-expanding fine stone concrete is replaced, and the existing gap is offset by the expansion effect after the later solidification, so that the fourth water line 4 is eliminated.

[0050] Preferably, in the pressurized grouting step, the grouting pipe 32 is inserted into the sleeve 31 by a seamless steel pipe, which can withstand at least 5 MPa of grouting pressure to avoid damage during pressurization; the insertion length of the steel pipe is limited to the top of the grouting top surface of the prestressed anchor rod 30 and the bottom of the cushion 10 to achieve sufficient depth. Preferably, a φ15.9×2.5 mm seamless steel pipe is inserted into the sleeve 31.

[0051] Preferably, a φ15.9×2.5 mm grouting pipe 32 (seamless steel pipe) is inserted into the φ65 mm sleeve 31, and the inserted seamless steel pipe can withstand 5 MPa of grouting pressure (there is no other object in the sleeve 31 except the steel strand, at this time the sleeve 31 is hollow and can insert the seamless steel pipe); the insertion length of the seamless steel pipe is selected as needed. Preferably, the bottom of the seamless steel pipe is inserted to the bottom of the sleeve 31, so that when grouting is performed through the grouting pipe 32 (seamless steel pipe), it is ensured that the pressure grouting forms water in the hole from the bottom to the top, achieving grouting compaction (the grouting squeezes the stored water in the sleeve from the bottom to the top, until the water is completely squeezed out, and the grout flows out of the seamless steel pipe on the ground). Thus, it is ensured that the pressure grouting forms water in the hole from the bottom to the top, achieving grouting compaction.

[0052] Preferably, the material of the grouting pipe 32 can be cement grout or double-liquid grouting, and the double-liquid grouting is cement grout and quick-setting agent water glass. The volume ratio of water glass to cement grout is 1:0.5 to 1:1. Double-liquid grouting belongs to existing materials, which will not be described here. Water glass is used for preliminary quick-setting and plays a better plugging and hardening role.

[0053] Preferably, in some embodiments, the bottom of the sleeve 31 can have stored water, and the cement grouting is injected through the grouting pipe 32 inserted into the root of the sleeve 31, so that the water is pressed out and discharged from the upper part or the top of the sleeve 31, that is, the mass density of the cement grout is large, which can push the water up and flow upward from the sleeve 31; In this process, part of the water can be mixed and absorbed by the cement grout; This process not only helps to seal the leakage, but also can discharge the existing water.

[0054] Preferably, a waterproof rubber 35 is arranged inside the sleeve 31, and the waterproof rubber 35 is used to close the second water line 2, and the waterproof rubber 35 is sleeved around the prestressed steel strand 33 and the grouting pipe 32; The waterproof rubber 35 has two groups of upper and lower; By arranging two groups of waterproof rubbers 35 above and below, the two groups of waterproof rubbers 35 can strengthen the closure of the second water line 2 and prevent water from moving upward along the second water line 2.

[0055] Preferably, the sleeve 31 is a φ65 mm metal bellows, which ensures the grouting space.

[0056] Preferably, the method further comprises step 6: construction measures for draining water: to ensure the waterproof effect of the structural floor 20, a water collecting capillary pipe 21 is arranged on the structural floor 20, underground water seeping into the structural floor 20 is guided into a water collecting pit (not shown in the figure) through the water collecting capillary pipe 21, and the underground water is blocked from entering the building indoor through the building surface layer.

[0057] Preferably, as shown in the figure, the water collecting capillary pipe 21 has the following structure: the water collecting capillary pipe 21 adopts a semicircular PVC pipe, i.e. an arc-shaped drainage pipe 211, the size of the PVC pipe is: a drainage pipe with DN80 and a wall thickness of 3.2 mm, and a 135-degree drainage pipe joint 213 is combined, i.e. a plurality of arc-shaped drainage pipes 211 can be connected through the drainage pipe joint 213, so as to make the water collecting capillary pipe 21. Figure 7

[0058] The specific preparation method is: the PVC pipe is split into the arc-shaped drainage pipe 211, a water collecting hole is hot-melted on the pipe body of the arc-shaped drainage pipe 211 by using an electric welding machine, and water seeping onto the structural floor 20 enters the PVC water collecting capillary pipe 21.

[0059] Embodiment 2:

[0060] The application further provides a prestressed anchor rod composite waterproof structure, which comprises:

[0061] a cushion layer 10;

[0062] a structural floor 20 located above the cushion layer 10;

[0063] a prestressed anchor rod 30 with a sleeve 31, the sleeve 31 being provided with the grouting pipe 32 and a plurality of prestressed steel wires 33; the grouting pipe 32 is used for injecting grout; the upper end of the prestressed anchor rod 30 is provided with an anchor steel pad 34; the grouting pipe 32 is inserted into the sleeve 31 for pressure grouting; preferably, the bottom of the prestressed anchor rod 30 is a bearing body 50, and the middle and lower part of the prestressed anchor rod 30, i.e. the lower part of the structural floor 20, is further provided with an anchor rod body 36, the anchor rod body 36 being outside the sleeve 31, the anchor rod body 36 and the sleeve 31 being filled with cement grout, and the middle part of the prestressed anchor rod 30 being provided with a plurality of centering supports 37 for positioning and clamping the grouting pipe 32 and the plurality of prestressed steel wires 33;

[0064] a waterproof gasket 40 between the anchor steel pad 34 and the structural floor 20;

[0065] a post-pouring protective layer 60 located above the structural floor 20, the post-pouring protective layer 60 adopting micro-expansion fine stone concrete.

[0066] ​Preferably, an elastic waterproof material layer 70 is provided between the padding layer 10 and the structural base plate 20, and the elastic waterproof material layer 70 is located around the outer wall of the sleeve 31; the elastic waterproof material layer adopts existing waterproof coating technology.

[0067] The water-stop rubber 35 is located inside the sleeve 31, and the water-stop rubber 35 is sleeved and wrapped around the prestressed steel wire 33 and the grouting pipe 32; the water-stop rubber 35 has two sets, upper and lower.

[0068] Preferably, the grouting pipe 32 is a seamless steel pipe, and the inserted steel pipe is required to withstand a grouting pressure of at least 5 MPa; the insertion length of the steel pipe is limited to: the top reaches above the top surface of the prestressed anchor rod 30 for grouting, and the bottom reaches below the height of the cushion layer 10.

[0069] Preferably, an elastic waterproof coating layer 70 is provided between the padding layer 10 and the structural base plate 20. The elastic waterproof coating layer 70 is arranged around the annular perimeter of the sleeve 31, and preferably has a first elastic waterproof coating layer and a second elastic waterproof coating layer, with the first elastic waterproof coating layer at the bottom having a larger area.

[0070] Preferably, a water collection capillary 21 is installed on the structural base slab 20 to guide groundwater that has seeped into the structural base slab 20 into a water collection pit, thereby preventing groundwater from passing through the building surface and entering the building interior.

[0071] Preferably, such as Figure 8 As shown, the water capillary line 21 includes an arc-shaped drain pipe 211, the surface of which has multiple water collection holes, and the interior of the arc-shaped drain pipe 211 is filled with fine stones; the arc-shaped drain pipe 211 is fixed to the structural base plate 20 by a pipe clamp 212; the arc-shaped drain pipe 211 is a half-length PVC drain pipe.

[0072] The arc-shaped drainage pipe 211 is made of half a PVC pipe. The process of making the half PVC drainage pipe is as follows: the PVC pipe is split in the middle to form the arc-shaped drainage pipe 211, and a water collection hole is formed on the body of the arc-shaped drainage pipe 211 by heat melting with an electric welding machine. This allows water that leaks onto the structural base plate 20 to enter the PVC water collection capillary tube 21 and be guided along the water collection capillary tube 21 to the water collection pit.

Claims

1. A method for prestressed anchor rod composite waterproof construction, characterized in that, Comprise the following steps: Step 1: install prestressed anchor rod (30), protect prestressed anchor rod (30) with sleeve (31), reserve grouting pipe (32) in sleeve (31), set up cushion layer (10) on upper part of prestressed anchor rod (30), structure bottom plate (20) above cushion layer (10), prestressed anchor rod (30) is closed after tensioning and grouting; Step 2: analyze the position of water line: after grouting, cement slurry hardens, four main water lines appear: the first water line (1) is the tiny gap between sleeve (31) and structure bottom plate (20) due to concrete shrinkage and hardening; the second water line (2) is the water line generated by the gap between sleeve (31) and grouting pipe; the third water line (3) is the water line generated between prestressed steel strand (33) and grouting mortar; the fourth water line (4) is the tiny gap between post-construction protection layer (60) of prestressed anchor rod (30) upper end anchor head and original foundation concrete of structure bottom plate (20); Step 3: close the first water line (1) and the second water line (2): use waterproof gasket (40) to press between anchor steel pad (34) and structure bottom plate (20), fill rigid contact surface, use the pressure applied by anchor steel pad (34) to make waterproof gasket (40) fill the contact surface, achieve the purpose of water stop; Step 4: construction measures for closing the third water line (3): use pressurized grouting method for grouting pipe (32) to solve the leakage risk; Step 5: construction measures for closing the fourth water line (4): use micro-expansion fine stone concrete for post-construction protection layer (60), use the expansion rate of micro-expansion fine stone concrete to close the fourth water line (4), achieve the effect of preventing leakage.

2. The prestressed anchor rod composite waterproof construction method according to claim 1, wherein in the pressurized grouting step, the grouting pipe (32) is a seamless steel pipe inserted into the sleeve (31), and the inserted steel pipe at least meets the requirement of bearing 5 MPa grouting pressure; the insertion length of the steel pipe is limited to: the top reaches above the top surface of the prestressed anchor rod (30) grouting, and the bottom reaches the height position below the cushion layer (10).

3. The prestressed anchor rod composite waterproof construction method according to claim 1, wherein a water stop rubber (35) is arranged inside the sleeve (31), the water stop rubber (35) is used to close the second water line (2), the water stop rubber (35) is sleeved around the prestressed steel strand (33) and the grouting pipe (32); the water stop rubber (35) has upper and lower groups. The sleeve (31) is a φ65 mm metal bellows, which ensures the grouting space.

4. The prestressed anchor rod composite waterproof construction method according to claim 1, further comprising step 6: setting up a water collecting capillary line (21) on the structure bottom plate (20), guiding the underground water penetrating into the structure bottom plate (20) into a water collecting pit through the water collecting capillary line (21), and blocking the underground water from penetrating into the building indoor through the building surface layer. ​ ​ ​ 5. The prestressed anchor rod composite waterproof construction method according to claim 4, characterized in that, the PVC drainage pipe is split into an arc-shaped drainage pipe (211), a water collecting hole is hot-melted on the pipe body of the arc-shaped drainage pipe (211) using a welding machine, and the arc-shaped drainage pipe (211) is arranged on the surface of the structural bottom plate (20) and filled with fine stones and fixed firmly using a pipe clamp (212).

6. A prestressed anchor rod composite waterproof structure, characterized in that, It comprises: a cushion layer (10); a structural bottom plate (20) located above the cushion layer (10); a prestressed anchor rod (30) fixed by the cushion layer (10) and the structural bottom plate (20) at the middle and upper part of the prestressed anchor rod (30), the prestressed anchor rod (30) having a sleeve (31) in which the grouting pipe (32) and a plurality of prestressed steel wires (33) are arranged; the prestressed anchor rod (30) is grouted by pressurization through the grouting pipe (32); the upper end of the prestressed anchor rod (30) has an anchor steel pad (34); a waterproof gasket (40) between the anchor steel pad (34) and the structural bottom plate (20); a post-pouring protective layer (60) located above the structural bottom plate (20), the post-pouring protective layer (60) being made of micro-expansion fine stone concrete.

7. The prestressed anchor rod composite waterproof structure according to claim 6, characterized in that, an elastic waterproof material layer (70) is arranged between the cushion layer (10) and the structural bottom plate (20), and the elastic waterproof material layer (70) is located around the outer wall of the sleeve (31); it further comprises a water-stopping rubber (35) located inside the sleeve (31), the water-stopping rubber (35) being sleeved on the prestressed steel wires (33) and the grouting pipe (32); the water-stopping rubber (35) has two groups of upper and lower water-stopping rubbers (35) for sealing the second water line (2).

8. The prestressed anchor rod composite waterproof structure according to claim 6, characterized in that, the grouting pipe (32) is a seamless steel pipe, and the inserted steel pipe at least meets the requirement of bearing a grouting pressure of 5 MPa; the insertion length of the steel pipe is limited to a height position where the top reaches above the top surface of the prestressed anchor rod (30) for grouting and the bottom reaches below the cushion layer (10).

9. The prestressed anchor rod composite waterproof structure according to claim 6, characterized in that, a water collecting capillary pipe line (21) is arranged on the structural bottom plate (20) to guide the underground water permeating into the structural bottom plate (20) into a water collecting pit, thereby blocking the underground water from penetrating into the building indoor through the building surface layer.

10. The prestressed anchor rod composite waterproof structure according to claim 9, characterized in that, the water capillary pipe line (21) comprises an arc-shaped drainage pipe (211) having a plurality of water collecting holes on the surface and filled with fine stones inside; the arc-shaped drainage pipe (211) is fixed on the structural bottom plate (20) by a pipe clamp (212); and the arc-shaped drainage pipe (211) is made of a half PVC drainage pipe.

Images