Waterproof construction method for underground engineering foundation

Abstract

The invention relates to the field of waterproof construction, and discloses an underground engineering foundation waterproof construction method which comprises the following steps: step 1, surface treatment: cleaning the surface of a concrete foundation layer, constructing a leveling layer, and polishing the leveling layer to obtain a foundation bottom surface; step 2, blade coating of primer: preparing and treating a glue solution, conveying the treated glue solution to a filtering box through a conveying pump for filtering, and blade coating the filtered glue solution on the foundation bottom surface through a glue coating head to form a glue solution layer; according to the waterproof construction method for the underground engineering foundation, when a waterproof coiled material is paved, the coiled material is actively released through a stepping motor, a gear motor and the like are used for driving transmission, and a moving block runs to enable a scraper to transversely scrape bubbles; after the scraping plate is in contact with the elastic pushing piece, the elastic lifting pin is separated from the restraining sinking groove and enters the adjusting groove, the angle and the position of the scraping plate are adjusted, and reverse running and transverse reciprocating paving are achieved; the coiled material is at least partially subjected to foam scraping twice and then rolled by the rolling piece, the position of the scraping plate is adjustable, and the coiled materials with different widths can be constructed.

Description

Technical Field

[0001] This invention relates to the field of waterproofing construction technology, and more specifically, to a method for waterproofing the foundation of underground engineering projects. Background Technology

[0002] Waterproofing construction aims to prevent water from seeping into specific parts of a building, achieving this goal through the selection of appropriate building materials and construction methods. Waterproofing measures are widely used in roofs, underground structures, underground parts of buildings, interiors requiring waterproofing, and water-storage structures. Based on the different measures and methods employed, waterproofing can be divided into two main categories: material waterproofing and structural waterproofing. Material waterproofing primarily relies on building materials to block the path of water penetration, thereby achieving waterproofing or enhancing resistance to leakage. Specific methods include rolled waterproofing membranes, coating waterproofing, rigid waterproofing using concrete and cement mortar, and waterproofing using clay and lime-soil mixtures. Among these, rolled waterproofing membranes are a crucial component of waterproofing measures; given their significant impact on building quality, selecting a high-quality waterproofing membrane installation device is particularly important.

[0003] Taking a waterproof membrane construction device disclosed in CN215368333U as an example, the device consists of a winding device, an adhesive application drive device, a sliding adhesive application device, a heating and mixing device, and a membrane laying device. The winding device is fixedly installed on a traveling trolley; two sets of adhesive application drive devices are fixed to both sides of the winding device; the sliding adhesive application device is fixed to the top of the traveling trolley; the heating and mixing device is embedded in the traveling trolley and connected to the rollers on the traveling trolley; and the membrane laying device is fixed to the bottom of the traveling trolley. However, this technology still faces the following challenges in practical applications: First, in the specific construction process, the first scraper assembly is used to repeatedly move along the length of the roll to adhere it, and then the second scraper assembly is used to scrape away air bubbles along the width of the roll to both sides. This process of "scraping along the long side first, then cleaning from the middle to the sides" is very likely to cause air inside the roll to not be completely expelled, thus forming air bubbles and false adhesion. It can also cause wrinkling, uneven glue distribution, and other problems. Second, in actual operation, the equipment cannot perform targeted laying and bubble removal treatment according to the specific width of the roll. Summary of the Invention

[0004] This invention provides a method for waterproofing the foundation of underground engineering projects, which solves the technical problems in related technologies that easily lead to air bubbles and false adhesion inside the membrane, as well as wrinkling and uneven adhesive distribution.

[0005] This invention provides a method for waterproofing the foundation of underground engineering projects, comprising the following steps: Step 1: Surface treatment: Clean the surface of the concrete base layer and apply a leveling layer. Grind the leveling layer to obtain the base bottom surface. Step 2, Applying Primer: Prepare and process the adhesive solution. The processed adhesive solution is then pumped to a filter box for filtration. The filtered adhesive solution is then applied to the base surface through an applicator to form an adhesive layer. Step 3: Laying the waterproof membrane: Lay the waterproof membrane on the adhesive layer, and then perform horizontal back-and-forth scraping and rolling treatment on the laid waterproof membrane to form a waterproof layer. Step 4: Apply a protective layer over the waterproof layer; Step 5: Construction of the foundation layer: Construction of the foundation structure is carried out on the protective layer.

[0006] As a further optimization of the present invention, in step three, the transverse reciprocating scraping and bubble treatment is completed by a scraper on a platform that can move along the roll material laying direction. The scraper is driven by a drive unit and moves back and forth along the width of the platform to scrape away bubbles from the laid waterproof membrane.

[0007] As a further optimization of the present invention, the drive unit includes a transmission screw and a bevel gear, wherein the transmission screw is rotated by the bevel gear to cause the scraper to reciprocate.

[0008] As a further optimization of the present invention, the bottom sides of the platform are provided with adjustable triggering devices. When the scraper moves to contact the triggering device, the triggering device acts on the scraper, causing the scraper to undergo axial displacement, thereby switching its rotation direction.

[0009] As a further optimization of the present invention, the scraper and the moving block that drives it to move are rotatably connected. The scraper is provided with an adjustment groove and a constraint groove, and the moving block is provided with an elastic top pin that cooperates with it. When the scraper is pushed by the triggering device, the elastic top pin can switch between the adjustment groove and different constraint grooves, so that the scraper rotates relative to the moving block to change its bubble scraping angle.

[0010] As a further optimization of the present invention, in step three, the rolling process is performed by using a pressure roller. The pressure roller is connected to the moving platform through a connecting rod and a pressure-applying component. The pressure-applying component is used to adjust the rolling pressure of the pressure roller on the waterproof membrane.

[0011] As a further optimization of the present invention, the filter box is provided with a rotatable inner rotating cylinder, and the inner rotating cylinder is provided with a plurality of filter units containing filter screens. When the filter screen becomes clogged, causing the pressure difference between the inlet and outlet to exceed the set value, the inner rotating drum is controlled to rotate, switching a new filter unit to the feeding position and automatically cleaning the clogged filter screen that has been removed.

[0012] As a further optimization of the present invention, the automatic cleaning of the clogged filter screen is achieved by driving the cleaning plate to move up and down reciprocally, so as to be washed by the soft brush on the cleaning plate, and the cleaned filter residue falls into the collection box at the bottom of the filter box.

[0013] As a further optimization of the present invention, heating, vacuuming and stirring are performed simultaneously inside the glue tank.

[0014] A method for waterproofing the foundation of an underground engineering project includes step five, which specifically includes: binding a steel mesh on the protective layer, pouring concrete to form the foundation layer, and finally constructing the ground floor layer on the foundation layer.

[0015] The beneficial effects of this invention are as follows: The present invention discloses a method for waterproofing the foundation of underground engineering. A primer is applied to the leveling layer. During the installation of the waterproof membrane, the membrane is actively extended by a stepper motor on the side of the membrane roller. A reduction motor drives a bevel gear to rotate, which in turn drives two transmission sleeves to rotate simultaneously. Since one of the transmission sleeves is engaged, the moving block moves to one side under the action of the transmission screw. During operation, a scraper performs lateral scraping of the waterproof membrane. When the scraper contacts the elastic jacking component, as it continues to move in the original direction, the longer elastic jacking component undergoes elastic deformation. When the elastic deformation reaches a certain level, the elastic jacking pin disengages from the constraint groove and enters the adjustment groove. The long elastic jacking component will return to its original length and adjust the angle of the scraper until the elastic jacking pin enters and engages with another set of constraint grooves. As it continues in the original direction, the two elastic jacking components act on the scraper, adjusting its position, that is, switching it from one position ring groove to another position ring groove. It engages with the toothed sleeve and another transmission toothed sleeve to complete the reverse operation. The transverse reciprocating cycle completes the laying of the roll material. The scraping and bubble treatment of the waterproof roll material is completed in one cycle in the forward and reverse directions of the scraper. At least some of the roll material is scraped and bubble treated twice. After the scraping and bubble treatment, the waterproof roll material is immediately rolled by the rolling component. The scraper's left and right position relative to the moving platform can be adjusted to complete the construction treatment of waterproof roll materials of different sizes and widths. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the bottom structure of the mobile platform; Figure 3 This is a structural schematic diagram of the scraper component; Figure 4 for Figure 3 A magnified view of a section at point B in the middle; Figure 5 A structural diagram showing the relationship between the movable platform and the T-shaped slide rail; Figure 6This is a schematic diagram of the scraper's structure; Figure 7 This is a schematic diagram of the scraper and the moving block. Figure 8 This is a vertical cross-sectional view of the internal structure of the filter box; Figure 9 This is a cross-sectional view of the internal structure of the filter box; Figure 10 for Figure 9 A magnified view of a section at point A in the middle; Figure 11 This is a schematic diagram of the slag removal plate and the drive block.

[0017] In the picture: 10. Glue container; 11. Heater; 12. Vacuum pump; 13. Stirrer; 14. Transfer pump; 15. Filter box; 151. Inner rotating cylinder; 152. Stepper motor; 153. Side plate; 154. Sealing plate; 155. Filter screen; 156. Fixing rod; 157. Inner support arc plate; 158. Slag removal plate; 1581. Pressure plate; 159. Soft brush; 1510. Drive motor; 1511. Drive block; 1512. Notch; 1513. Through-hole; 1514. Collection box; 1515. Sealing strip; 6. Glue applicator head; 7. Guide rod; 8. Return spring; 20. Mobile platforms; 30. Roller; 31. Rolling component; 32. Gear motor; 33. Lead screw; 34. Bevel gear; 35. Support base; 351. Top screw; 352. Spring body; 353. Steel ball; 354. Positioning annular groove; 36. Moving block; 37. Scraper; 38. Transmission gear sleeve one; 39. Transmission gear sleeve two; 310. Matching gear sleeve; 311. Moving platform; 312. Elastic pusher; 313. Elastic top pin; 314. Constraint groove; 315. Adjustment groove; 3101. Pressure roller; 3102. Connecting rod; 3103. Pressure application component. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] like Figures 1 to 11 As shown in the embodiment of the present invention, a method for waterproofing the foundation of an underground engineering project includes the following construction steps: Step 1: Surface treatment of concrete foundation Clean the debris adhering to the construction surface of the concrete base layer, and then construct a leveling layer on the concrete base layer. Grinding equipment is used to remove the loose dust and concrete surface layer of the leveling layer to obtain the foundation bottom surface; Step 2, apply the base coat: The base adhesive raw materials are put into the adhesive tank 10. The adhesive tank 10 is equipped with a heater 11 to heat the adhesive liquid inside the adhesive tank 10. A vacuum pump 12 is installed on the outside of the adhesive tank 10 to vacuum the adhesive liquid inside. At the same time, the stirrer 13 inside the adhesive tank 10 stirs the adhesive liquid to keep the adhesive liquid in a uniform flow state. The adhesive is delivered to the filter box 15 by the delivery pump 14 for filtration. After filtration, it is sent to the coating head 6 to apply the adhesive to the bottom surface of the exposed waterproof membrane to obtain an adhesive layer. The filter box 15 has a glue inlet on one side and a glue outlet at the bottom. An inner rotating cylinder 151 is rotatably installed inside the filter box 15. The inner rotating cylinder 151 has filter sections distributed at equal intervals. A stepper motor 152 is installed on the filter box 15 to drive the inner rotating cylinder 151 to rotate at a set angle. Pressure sensors are evenly distributed at the inlet and outlet. The side of the filter box 15 closest to the inlet is the feeding side, and the side facing away from the outlet is the slag removal side. The filtration section includes a slurry hole and side plates 153 symmetrically distributed on the left and right sides of the slurry hole. A filter screen 155 and a sealing plate 154 are arranged between the side plates 153. The sealing plate 154 is arranged on the side of the filter screen 155 facing away from the slurry hole. There are two sealing plates 154, each of which is rotatably connected to the side of the side plate 153 away from the slurry hole. The rotation position is provided with a torsion spring. A constraint strip is provided on the side plate 153 to limit the maximum outward angle of the sealing plate 154. An arc-shaped groove is provided at the end of the side plate 153. A groove for the constraint strip to enter is provided in the arc-shaped groove. A sealing strip 1515 is provided on the side of the side plate 153 that contacts the sealing plate 154 to keep the side plate 153 sealed when the sealing plate 154 rotates inward to seal. A fixed rod 156 is independently distributed inside the inner rotating cylinder 151. The fixed rod 156 is fixed to the bottom of the inner side of the filter box 15. An inner support arc plate 157 is installed on the side of the fixed rod 156. The side of the inner support arc plate 157 near the feed inlet gradually moves towards the inner side of the inner rotating cylinder 151.

[0020] A cleaning plate 158 that reciprocates up and down is provided inside the cleaning side, and a soft brush 159 is provided on the cleaning plate 158 facing the filter screen 155. A drive motor 1510 is provided on the outside of the filter box 15. A drive block 1511 is installed at the output end of the drive motor 1510. The drive block 1511 is a cam block. The drive block 1511 drives the cleaning plate 158 to move up and down and back and forth, and the filter residue on the surface of the filter screen 155 is cleaned by the soft brush 159. The slag cleaning plate 158 has pressure plates 1581 distributed on the upper and lower sides of the drive block 1511 on the side opposite to the soft brush 159. Guide rods 7 are provided on both the upper and lower sides of the slag cleaning side. The guide rods 7 are used to vertically guide the slag cleaning plate 158. A return spring 8 is fitted on the outer side of the upper guide rod 7. The return spring 8 is used to ensure that the pressure plate 1581 and the cam block are always in contact.

[0021] The bottom of the inner rotating cylinder 151 is provided with a notch 1512, and the bottom of the filter box 15 is provided with a through hole 1513. The through holes 1513 are distributed on the bottom of the slag-cleaning side. After the inner rotating cylinder 151 rotates at a set angle, the notch 1512 and the through hole 1513 coincide. The bottom of the filter box 15 is detachably connected to a collection box 1514. During operation, the mixed adhesive, conveyed by the delivery pump 14, passes through the filter screen 155, opens the sealing plate 154, and enters the inner side of the inner rotating cylinder 151. It then enters the applicator head 6 through the bottom outlet. As it passes through the filter screen 155, impurities inside the adhesive are intercepted. Once a certain level of interception occurs, the pressure difference between the pressure sensors exceeds the set value. At this point, the system determines that a blockage has occurred, and the stepper motor 152 starts, driving the inner rotating cylinder 151 to rotate at a certain angle, opening a new filter screen. 155 rotates to the side aligned with the glue inlet. During rotation, the sealing plate 154 will automatically close under the action of the inner support arc plate 157 and the torsion spring. When the clogged filter screen 155 rotates to the cleaning side, the drive block 1511 drives the cleaning plate 158 to move up and down reciprocally to clean the filter residue on the filter screen 155. After cleaning, it can be recycled back to the glue inlet to filter the glue again. The filter residue cleaned during the cleaning process will enter the collection box 1514 for unified processing after passing through the notch 1512 and the through hole 1513. Step 3, Install the waterproof membrane: Immediately afterwards, the waterproof membrane is laid out on the roll roller 30. The waterproof membrane is laid on the adhesive layer. After laying, the membrane is immediately subjected to serpentine de-bubbling and rolling treatments to obtain a waterproof layer. Step 4, Protective layer construction: Pour a 5cm thick layer of mortar over the waterproof layer to obtain a protective layer; Step 5, Foundation Construction: A steel mesh is tied to the protective layer, and a concrete layer is poured on the steel mesh to obtain the base layer. Then, floor paint is applied to the base layer to obtain the floor layer.

[0022] A movable platform 20 is provided at the bottom of the roll material roller 30. A scraper and rollers 31 distributed behind the scraper are provided at the tail of the movable platform 20. The scraper includes a geared motor 32 and a transmission screw 33. A bevel gear 34 is installed at the output end of the geared motor 32. Both ends of the transmission screw 33 are mounted on the movable platform 20 via support seats 35. A movable block 36 is threaded onto the transmission screw 33. The movable block 36 slides relative to the movable platform 20 in the width direction. The top surface of the movable block 36 is a sliding surface. A scraper 37 is rotatably mounted on the bottom of the movable block 36. An adjustment component for switching the angle of the scraper 37 is provided on the movable block 36. A transmission gear sleeve 1 38 and a transmission gear sleeve 2 39 are fitted onto the outer side of one end of the transmission screw 33. Both gear sleeves 39 mesh with bevel gears 34. The axial positions of transmission gear sleeves 38 and 39 relative to the transmission screw 33 are adjustable. A mating gear sleeve 310 is fixed on the outer side of the transmission screw 33. The mating gear sleeve 310 is distributed between transmission gear sleeves 38 and 39 and meshes with the end face of either of them. Two sets of moving platforms 311 are provided at the bottom of the moving platform 20. A T-shaped slide rail is provided on the bottom surface of the moving platform 20. The moving platforms 311 slide on the T-shaped slide rail and are fixed to the moving platforms 311 by locking bolts. The two sets of moving platforms 311 are adjustable along the width of the moving platform 20. An elastic pusher 312 for adjusting the scraper 37 is provided on the moving platform 311.

[0023] Each movable platform 311 has two sets of elastic pushers 312 with different lengths. Each elastic pusher 312 includes a fixed sleeve, a spring installed inside the fixed sleeve, and a pusher rod that acts on the scraper 37. The spring is located on the side of the pusher rod away from the scraper 37.

[0024] The adjusting component includes an elastic top pin 313, an adjusting groove 315 is provided on the top of the scraper 37, and a constraint groove 314 is provided at the end of the adjusting groove 315. The elastic top pin 313 is slidably fitted in the adjusting groove 315 and the constraint groove 314.

[0025] The elastic top pins 313 and the adjusting grooves 315 are symmetrically distributed in two sets, and the constraint grooves 314 are distributed at both ends of the adjusting grooves 315.

[0026] The support base 35 has a mounting hole on its side, and a set screw 351, a spring body 352 and a steel ball 353 are provided in the mounting hole. The outer side of the transmission screw 33 is provided with two sets of position ring grooves 354. Each set of position ring grooves 354 has two grooves. The distance between the end face of the mating gear sleeve 310 and the end face of the transmission gear sleeve is equal to the distance between the two position ring grooves 354.

[0027] During the installation of the waterproof membrane, the membrane is actively released by the reduction motor 32 on the side of the membrane roller 30. The reduction motor 32 drives the bevel gear 34 to rotate, which in turn drives the two transmission sleeves to rotate simultaneously. Since the sleeve 310 and one of the sleeves are engaged at this time, the moving block 36 moves to one side under the action of the transmission screw 33. During operation, the scraper 37 performs transverse scraping and bubble removal on the waterproof membrane. When the scraper 37 comes into contact with the elastic pusher 312, as it continues to move in the original direction, the longer elastic pusher 312 undergoes elastic deformation. When the elastic deformation reaches a certain degree, the elastic pin 313 disengages from the constraint groove 314 and enters the adjustment groove 3. Within 15 minutes, the longer elastic pusher 312 will return to its original length and adjust the angle of the scraper 37 until the elastic pusher 313 enters and engages with another set of constraint grooves 314. As it continues in the original direction, the two elastic pushers 312 act on the scraper 37 to adjust its position, that is, switch from one position ring groove 354 to another position ring groove 354. It engages with the toothed sleeve 310 and another transmission toothed sleeve to complete the reverse operation. The transverse reciprocating cycle completes the laying of the roll material. The scraper 37 completes one cycle of scraping and bubbling the waterproof roll material in the forward and reverse directions. At least part of the roll material is scraped and bubbled twice. After the scraping and bubbling treatment, the waterproof roll material is rolled by the rolling member 31.

[0028] The rolling element 31 includes a pressure roller 3101, with connecting rods 3102 installed at both ends of the pressure roller 3101. One end of the connecting rod 3102 is rotatably installed on the end of the pressure roller 3101, and the other end is rotatably installed on the moving platform 20. A pressure applying element 3103 is rotatably installed on the moving platform 20, and one free end of the pressure applying element 3103 is connected to the connecting rod 3102.

[0029] The pressure-applying component 3103 is an electric push rod, a pneumatic cylinder, or a hydraulic cylinder, and the position of the pressure-applying component 3103 relative to the moving platform 20 is adjustable.

[0030] By adjusting the length of the relative moving platform 20 of the pressure-applying component 3103, the initial pressure of the pressure roller 3101 is achieved, which ultimately acts on the waterproof membrane to achieve the function of rolling and tightly adhering the waterproof membrane.

[0031] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A method for waterproofing the foundation of underground engineering projects, characterized in that, Includes the following steps: Step 1: Surface treatment: Clean the surface of the concrete base layer and apply a leveling layer. Grind the leveling layer to obtain the base bottom surface. Step 2, Applying Primer: Prepare and process the adhesive solution. The processed adhesive solution is then pumped to a filter box for filtration. The filtered adhesive solution is then applied to the base surface through an applicator to form an adhesive layer. Step 3: Laying the waterproof membrane: Lay the waterproof membrane on the adhesive layer, and then perform horizontal back-and-forth scraping and rolling treatment on the laid waterproof membrane to form a waterproof layer. Step 4: Apply a protective layer over the waterproof layer; Step 5: Construction of the foundation layer: Construction of the foundation structure is carried out on the protective layer.

2. The method for waterproofing underground engineering foundations according to claim 1, characterized in that: In step three, the transverse reciprocating scraping treatment is completed by a scraper on a platform that can move along the roll material laying direction; The scraper is driven by a drive unit and moves back and forth along the width of the platform to scrape away bubbles from the laid waterproof membrane.

3. The method for waterproofing underground engineering foundations according to claim 2, characterized in that: The drive unit includes a lead screw and a bevel gear. The lead screw is rotated by the bevel gear to cause the scraper to reciprocate.

4. The method for waterproofing underground engineering foundations according to claim 3, characterized in that: The platform has adjustable triggering devices on both sides of its bottom. When the scraper moves to contact the triggering device, the triggering device acts on the scraper, causing the scraper to move axially and thus switch its rotation direction.

5. The method for waterproofing underground engineering foundations according to claim 4, characterized in that: The scraper and the moving block that drives it are rotatably connected. The scraper is provided with an adjustment groove and a constraint groove, and the moving block is provided with an elastic top pin that cooperates with it. When the scraper is pushed by the triggering device, the elastic top pin can switch between the adjustment groove and different constraint grooves, so that the scraper rotates relative to the moving block to change its scraping angle.

6. The method for waterproofing underground engineering foundations according to claim 1, characterized in that: In step three, the rolling process is performed using a pressure roller. The pressure roller is connected to the moving platform via a connecting rod and a pressure-applying component. The pressure-applying component is used to adjust the rolling pressure of the pressure roller on the waterproof membrane.

7. The method for waterproofing underground engineering foundations according to claim 1, characterized in that: The filter box contains a rotatable inner rotating cylinder, on which multiple filter units containing filter screens are installed. When the filter screen becomes clogged, causing the pressure difference between the inlet and outlet to exceed the set value, the inner rotating drum is controlled to rotate, switching a new filter unit to the feeding position and automatically cleaning the clogged filter screen that has been removed.

8. The method for waterproofing underground engineering foundations according to claim 7, characterized in that: The automatic cleaning of the clogged filter screen is accomplished by driving the cleaning plate to move up and down repeatedly, so as to be scrubbed by the soft brush on the cleaning plate. The cleaned filter residue falls into the collection box at the bottom of the filter box.

9. The method for waterproofing underground engineering foundations according to claim 1, characterized in that: Heating, vacuuming, and stirring are performed simultaneously inside the glue tank.

10. A method for waterproofing underground engineering foundations according to claim 1, characterized in that: Step five specifically includes: binding steel mesh on the protective layer, pouring concrete to form the foundation layer, and finally constructing the floor layer on the foundation layer.

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