A construction method for installing waterproof casing on old wall panel structure

Abstract

The invention discloses a construction method for installing a waterproof sleeve on an old wall panel structure, comprising the following steps: selecting a construction area on the wall panel structure; chiseling out the construction area to reserve a waterproof sleeve installation space, and retaining the steel bars of the wall panel structure; sleeve the waterproof sleeve on the side of a pipeline, and install it in the installation space; install a first installation plate on the back water surface, the first installation plate and the waterproof sleeve are flush with the flange ring on the back water surface, and the first installation plate is connected to the waterproof sleeve and enclosed with the wall panel structure to form a first concrete pouring space; pour concrete in the first concrete pouring space to form a first filling structure, and after a first preset time interval, install a second installation plate on the front water surface and the side of the first filling structure close to the front water surface; support formwork and pour concrete at a first preset position on the front water surface to form a second filling structure, the second filling structure is away from the front water surface and is flush with the bottom of the flange of the waterproof sleeve on the front water surface; an additional waterproof layer and a waterproof protective layer are added outside the second filling structure to ensure reliable engineering quality.

Description

Technical Field

[0001] The invention relates to the technical field of construction, in particular to a construction method for installing a waterproof sleeve on an old wall panel structure. Background Art

[0002] At present, some old buildings use reinforced concrete structure pools as shared facilities for domestic water and fire fighting water. However, with the continuous updating and development of national specifications and standards, the original reinforced concrete structure pools on the roof often need to be renovated because the old waterproof structure is difficult to meet the current specifications. The current waterproof renovation of the old reinforced concrete structure pool is difficult to ensure the strength and waterproof quality after the new holes are added. Summary of the invention

[0003] The purpose of the present invention is to provide a construction method, which can effectively ensure the strength of the original reinforced concrete pool wall after the new hole is added when adding a waterproof sleeve to the wall panel structure of an old reinforced concrete pool, and can also solve the waterproof problem after the new hole is added.

[0004] In order to solve the above technical problems, the present invention provides a construction method for installing a waterproof sleeve on a wall panel structure, comprising the following steps:

[0005] Select the area to be constructed in the wall panel structure;

[0006] Chiseling away the area to be constructed to leave space for installing the waterproof casing and retaining the steel bars of the wall panel structure;

[0007] The waterproof sleeve is sleeved on the circumference of the pipeline and installed in the installation space;

[0008] A first mounting plate is installed on the back water surface of the wall panel structure, the first mounting plate is flush with the flange ring of the waterproof sleeve located on the back water surface, and the first mounting plate is connected to the waterproof sleeve to enclose the wall panel structure to form a first concrete pouring space;

[0009] Concrete is poured in the first concrete pouring space to form a first filling structure, and after a first preset time, a second installation plate is installed on the water-facing surface of the wall panel structure and on a side of the first filling structure close to the water-facing surface;

[0010] Casting concrete at a first preset position on the water-facing surface to form a second filling structure, wherein a side of the second filling structure facing away from the water-facing surface is flush with the bottom of the flange of the waterproof sleeve located on the water-facing surface;

[0011] An additional waterproof layer and a waterproof protective layer are sequentially added outside the second filling structure.

[0012] Furthermore, the step of installing a first mounting plate on the back surface of the wall panel structure comprises:

[0013] Processing the surface of the water-receiving surface to facilitate bonding with the first mounting plate;

[0014] Drilling a hole at a second preset position of the wall panel structure and embedding a first chemical anchor bolt;

[0015] Match the mounting hole of the first mounting plate with the first chemical anchor bolt, and bond the first mounting plate to the back water surface, so that the first mounting plate is wider than the edge of the mounting space by more than 150 mm, and the hollow area between the first mounting plate and the back water surface does not exceed 10%;

[0016] The weld between the flange ring of the waterproof sleeve and the first mounting plate is welded.

[0017] Furthermore, the step of installing a second mounting plate on the water-facing surface of the wall panel structure and on the side of the first filling structure close to the water-facing surface comprises:

[0018] Processing the surface of the water-facing surface and / or the surface of the first filling structure on a side close to the water-facing surface to facilitate bonding with the second mounting plate;

[0019] Drilling a hole at a third preset position of the wall panel structure and embedding a second chemical anchor bolt;

[0020] The mounting hole of the second mounting plate is matched with the second chemical anchor bolt, so that the second mounting plate is installed on the water-facing surface and the side of the first filling structure close to the water-facing surface; the second mounting plate is wider than the edge of the installation space by more than 150 mm, and the hollow area between the second mounting plate and the water-facing surface and the side of the first filling structure close to the water-facing surface does not exceed 10%;

[0021] Lightly tap the second mounting plate with a mallet to ensure that the injection gap between the second mounting plate and the water-facing surface and / or the first filling structure on the side close to the water-facing surface is uniform;

[0022] Then, the first end of the glue injection tube is inserted into the glue injection gap between the second mounting plate and the water-facing surface, and the insertion length of the first end is 6-7 mm, the first end is flat-mouthed, and the width of the first end is 0.8-1.2 mm, wherein a plurality of the glue injection gaps together define a glue injection surface, and the glue injection tube is arranged on the symmetry axis of the glue injection surface, and when the glue injection surface is a vertical surface, the glue injection tube is arranged at the bottom;

[0023] The injection gap is pressure-injected with glue through the glue injection tube to fill the injection gap between the second mounting plate and the wall panel structure, the first filling structure and the waterproof sleeve; when glue emerges from all the exhaust holes on the second mounting plate, the exhaust holes are sealed and the glue injection is stopped after the second preset time, and then left to stand for a third preset time.

[0024] Furthermore, when the injection surface is a horizontal plane, no vent holes are required at the same side as the injection tube, and vent holes are arranged at the corner where the side intersects with the adjacent side, and vent holes should be arranged on the flow fusion surface of the structural glue to prevent air entrapment; if the viscosity of the structural glue is lower than the preset value, the spacing between the vent holes is 95-105 mm; if the viscosity of the structural glue is higher than the preset value, the spacing between the vent holes is 55-65 mm;

[0025] When the injection surface is a vertical surface, an exhaust hole is opened at the highest point of the side opposite to the side where the injection tube is located; if the viscosity of the structural adhesive is lower than the preset value, the spacing between the exhaust holes is 145-155mm; if the viscosity of the structural adhesive is higher than the preset value, the spacing between the exhaust holes is 85-95mm.

[0026] Furthermore, processing the surface of the water-facing surface and / or the surface of the first filling structure close to the water-facing surface includes:

[0027] Removing the waterproof layer from the surface of the water-facing surface to form a first area for the second mounting board to be bonded;

[0028] The waterproof layer on the water-facing surface 350 mm from the edge of the first area is removed to form a second area;

[0029] The surfaces of the first area, the second area and / or the first filling structure on the side close to the water-facing surface are roughened and trimmed.

[0030] Furthermore, before the glue injection gap is pressure-injected with glue through the glue injection tube, the method further includes:

[0031] Temporarily seal the gap between the waterproof sleeve and the second mounting plate and the edge of the second mounting plate using epoxy mortar;

[0032] 24 hours after the epoxy mortar plugging, temporarily plug the exhaust holes of the second mounting plate, then apply soapy water to each plugging location, use an air compressor to apply pressure to the injection hose, and check for leaks;

[0033] If no leaks exist, remove the temporary plug.

[0034] Further, performing formwork and concrete pouring at a first preset position on the water-facing surface to form a second filling structure includes:

[0035] Providing wooden formwork at the first preset position to form a second concrete pouring space;

[0036] Wrap two butyl tapes at intervals around the waterproof casing to waterproof and seal the joints;

[0037] Concrete is poured into the second concrete pouring space to form a second filling structure, wherein the second filling structure is 250 mm wider than the edge of the second mounting plate.

[0038] Furthermore, the step of sequentially constructing an additional waterproof layer and a waterproof protective layer outside the second filling structure includes:

[0039] performing a finishing process on the surface of the second filling structure;

[0040] Performing additional waterproofing treatment on the second filling structure;

[0041] constructing an additional waterproof layer outside the second filling structure;

[0042] A waterproof protective layer is applied outside the waterproof layer.

[0043] Furthermore, constructing an additional waterproof layer outside the second filling structure includes:

[0044] Apply waterproof coating multiple times outside the second filling structure to form an additional waterproof layer; wherein the thickness of each layer of the waterproof coating is controlled to be 0.5-0.6mm, and the next layer of the waterproof coating can be applied only when the previous layer of the waterproof coating is dry and no longer sticky.

[0045] Furthermore, the coating directions of each layer of the waterproof coating are perpendicular to each other, and each layer is coated in the order of vertically first and then horizontally.

[0046] Furthermore, ceramic tiles are attached to the outside of the waterproof protective layer.

[0047] Compared with the prior art, the construction method for installing a waterproof sleeve on an old wall panel structure according to the embodiment of the present invention has the following beneficial effects:

[0048] According to an embodiment of the present invention, a construction area is selected from a wall panel structure; the construction area is chiseled out to leave an installation space for a waterproof sleeve, and the steel bars of the wall panel structure are retained; the waterproof sleeve is sleeved on the peripheral side of the pipeline and installed in the installation space; a first installation plate is installed on the back water surface of the wall panel structure, the first installation plate is flush with the flange ring of the waterproof sleeve located on the back water surface, and the first installation plate is connected to the waterproof sleeve to enclose the wall panel structure to form a first concrete pouring space; concrete is poured in the first concrete pouring space to form a first filling structure, and after a first preset time interval, a second installation plate is installed on the front water surface of the wall panel structure and on the side of the first filling structure close to the front water surface; formwork is supported and concrete is poured at a first preset position on the front water surface to form a second filling structure, and the side of the second filling structure away from the front water surface is flush with the bottom of the flange of the waterproof sleeve located on the front water surface; an additional waterproof layer and a waterproof protective layer are sequentially constructed outside the second filling structure. The construction method provided by the present invention ensures the reliable quality of the waterproofing project at the newly added waterproof casing position of the old wall panel structure through rigorous steps and structural design, effectively prevents moisture from leaking from the penetration point to the inside of the wall or other areas, while taking into account the long-term stability and safety of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 is a schematic diagram of the structure after the construction area is chiseled out according to an embodiment of the present invention;

[0050] Figure 2 is a schematic diagram of the structure after the first mounting plate is installed in the embodiment of the present invention;

[0051] Figure 3 is a schematic diagram of a first exemplary structure after the second mounting plate is installed in an embodiment of the present invention;

[0052] Figure 4 is a schematic diagram of the arrangement of the exhaust holes and the glue injection pipe of the first example after the second mounting plate is installed in the embodiment of the present invention;

[0053] Figure 5 is a schematic diagram of a second exemplary structure after the second mounting plate is installed in an embodiment of the present invention;

[0054] Figure 6 is a schematic diagram of the arrangement of the exhaust holes and the glue injection pipe of the second example after the second mounting plate is installed in the embodiment of the present invention;

[0055] Figure 7 is a schematic diagram of the structure after applying the second filling structure in an embodiment of the present invention;

[0056] Figure 8 is a schematic diagram of the structure of the embodiment of the present invention after the tiles are attached;

[0057] In the figure, 1. wall panel structure; 101. installation space; 102. back water surface; 103. front water surface; 2. waterproof sleeve; 21. flange ring; 22. flange bottom; 3. pipeline; 4. first installation plate; 5. first concrete pouring space; 6. first filling structure; 7. second installation plate; 8. second filling structure; 9. waterproof layer; 10. waterproof protective layer; 11. first chemical anchor; 12. second chemical anchor; 13. glue injection tube; 14. ceramic tile. DETAILED DESCRIPTION

[0058] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0059] like Figures 1 to 8 As shown, the present invention provides a construction method for installing a waterproof sleeve 2 on an old wall panel structure 1, which is suitable for the construction of a new waterproof sleeve 2 on the wall panel structure 1 of an old building, such as for a pool in an existing building project, and can also be used for the treatment of newly opened holes in a basement side wall with waterproofing requirements. The construction method includes the following steps:

[0060] S110, selecting a construction area in the wall panel structure 1;

[0061] In accordance with the requirements of the design drawings, this embodiment uses a level, a steel tape measure and a line ink gauge to lay out the roof fire water tank area to determine the specific location where the waterproof casing 2 needs to be installed on the wall panel structure 1, so as to facilitate subsequent precise construction and ensure that the size of the hole to be chiseled is accurate.

[0062] S120, the construction area is chiseled out to leave an installation space 101 for the waterproof casing 2, and the steel bars of the wall panel structure 1 are retained;

[0063] In this step, a jackhammer is used to manually chisel away part of the old wall panel structure 1 to leave space for the installation of the waterproof casing 2. However, the original steel bars in the wall panel structure 1 must be retained to avoid cutting or damage to maintain the integrity of the wall panel structure 1. At the same time, the concrete structure of the wall panel structure 1 should be retained as much as possible to meet the minimum size for the installation of the waterproof casing 2.

[0064] S130, sleeve the waterproof sleeve 2 around the pipe 3 and install it in the installation space 101;

[0065] In this step, the prepared waterproof sleeve 2 is wrapped around the outside of the pipe 3 passing through the installation space 101, and embedded into the pre-cut installation space 101. It should be noted that for materials such as flexible sleeve gaskets that are easily deformed by heat, they should be replaced with flexible non-combustible materials such as ceramic fiber pads in advance to avoid damage during the subsequent welding process.

[0066] S140, installing a first mounting plate 4 on the back water surface 102 of the wall panel structure 1, the first mounting plate 4 being flush with the flange ring 21 of the waterproof sleeve 2 located on the back water surface 102, and the first mounting plate 4 being connected to the waterproof sleeve 2 to enclose the wall panel structure 1 to form a first concrete pouring space 5, so as to strengthen the combination of the waterproof sleeve 2 and the wall panel structure 1, and at the same time provide an anchoring foundation for concrete pouring;

[0067] S150, pouring concrete in the first concrete pouring space 5 to form a first filling structure 6, which is tightly combined with the waterproof casing 2 and the first mounting plate 4 after hardening to further enhance the structural stability, and after a first preset time, installing a second mounting plate 7 on the water-facing surface 103 of the wall panel structure 1 and the side of the first filling structure 6 close to the water-facing surface 103 to complete the preliminary waterproof structure installation;

[0068] It should be noted that after cleaning the water of the dry water filling test, pouring concrete immediately to avoid oxidation of steel plates and steel bars. This step uses C20 fine stone concrete with a water resistance grade ≥ P6. Among them, the first filling structure 6 is close to the installation position of the second mounting plate 7 close to the water-facing surface 103 on one side of the water-facing surface 103, and the first preset time is the 7th day after pouring concrete.

[0069] S160, casting concrete at a first preset position of the water-facing surface 103 to form a second filling structure 8, wherein the side of the second filling structure 8 facing away from the water-facing surface 103 is flush with the flange bottom 22 of the waterproof sleeve 2 located on the water-facing surface 103. This step ensures the strict waterproof performance of the water-facing surface 103 by adding a waterproof barrier;

[0070] S170, an additional waterproof layer 9 and a waterproof protective layer 10 are sequentially added outside the second filling structure 8 to enhance the waterproof effect and durability of the entire passing part.

[0071] To sum up, the construction method provided in this embodiment ensures the reliable quality of the waterproofing project of the old wall panel structure 1 at the newly added waterproof casing 2 through rigorous steps and structural design, effectively preventing moisture from leaking from the penetration point to the inside of the wall or other areas, while taking into account the long-term stability and safety of the building.

[0072] like Figure 2 As shown, further, installing the first mounting plate 4 on the back surface 102 of the wall panel structure 1 includes:

[0073] S141, processing the surface of the back water surface 102 to facilitate bonding with the first mounting plate 4;

[0074] In this step, the surface layer of the original wall panel structure 1 is first chiseled off until the solid base layer (that is, the concrete interface) is completely exposed. When dealing with surfaces with large unevenness, a hand hammer should be used to knock the raised parts, and the sunken parts should be filled with structural repair adhesive to make the surface relatively flat, and at the same time, the corners should be polished into rounded corners. Then, the roughening treatment is carried out, using a 1.5 kg pneumatic pointed chisel hammer to chisel out fine concave points on the concrete bonding surface to form a point depth of about 3 mm and a uniform layout of 600 to 800 points per square meter. Finally, a wire brush and a hair dryer are used to remove the surface dust and blow it clean to ensure that the surface is flat and free of dust and impurities, enhance its bonding effect with the first mounting plate 4, and enable the two to be tightly and firmly combined.

[0075] S142, drilling a hole at a second preset position of the wall panel structure 1, and embedding a first chemical anchor bolt 11;

[0076] After the drilling is completed in this step, the drilling depth is checked. In this embodiment, the first chemical anchor bolt 11 of M12 is used, the drilling depth is 60mm, and the spacing is 125mm. In this step, use an air cylinder to blow away the powder in the hole, and use a brush to remove the powder attached to the inner wall of the hole, and ensure that the surface of the first chemical anchor bolt 11 is clean, dry, and free of oil. Confirm that the glass tube anchoring package has no abnormal phenomena such as appearance damage and solidification of the agent. Put it into the drug tube and check the fluidity of the resin by hand or visually, and try to make the white particles in the drug tube evenly distributed in the tube. After confirmation, put it into the anchor hole with the round head facing inward and push it to the bottom of the hole.

[0077] Then use an electric drill and a special installation fixture to forcefully rotate the screw until it reaches the bottom of the hole, so as to break the glass tube and forcefully mix the anchoring agent. The speed of the electric drill should be adjusted to a slow speed, and the impact method should not be used. Screw in the screw, the front end of the screw is buried with a 45-degree cut angle, the rear end is screwed into the hexagonal nut and driven by an electric tool to screw into the bottom of the hole. When it is rotated to the bottom of the hole or the marked position on the bolt, stop rotating immediately to confirm that the resin has risen to the vicinity of the hole mouth.

[0078] Remove the installation fixture and avoid disturbance after gelation and before complete solidification, so as to avoid overtime rotation which will cause glue loss and affect the anchoring force. This step uses the strong holding force generated by the chemical anchoring agent after solidification to form a strong mechanical connection between the first installation plate 4 and the wall panel structure 1.

[0079] S144, matching the mounting hole of the first mounting plate 4 with the first chemical anchor 11, and bonding the first mounting plate 4 to the back water surface 102, so that the first mounting plate 4 is wider than the edge of the mounting space 101 by more than 150 mm, and the hollow area between the first mounting plate 4 and the back water surface 102 does not exceed 10%;

[0080] The first mounting plate 4 of this step is a steel plate, which is cut according to the design drawings (the thickness of the steel plate here is 5mm). According to the on-site conditions, the steel plate must be more than 150mm wider than the edge of the chiseled installation space 101, increasing the contact area between the steel plate and the back water surface 102, improving the structural stability, and ensuring that there is sufficient coverage when pouring concrete to prevent hollowing. Among them, the mounting holes are drilled on-site according to the position of the waterproof sleeve 2 and the position of the chemical anchor bolt. The steel should be corrected before cutting, and the deviation after correction should not exceed the allowable deviation value of the specification to ensure the processing quality. In addition, after the adhesive surface is corrected to remove the rust and oxide film, it is necessary to use a grinding wheel to grind and roughen it.

[0081] Furthermore, the installation of the steel plate and the back surface 102 is done by manual gluing, and the steel plate of the back surface 102 is glued with high temperature resistant structural glue to ensure that the welding of the casing and the outer steel plate of the back surface 102 will not damage the structural bonding due to heat. At the same time, the steel plate of the back surface 102 can be used as a bottom template for pouring concrete at one time. After pasting, wooden beams and steel pipes are used to temporarily support the steel plate of the back surface 102. After tightening the nuts and chemical bolts, let it stand for 72 hours. Among them, after pasting and during the standing process, the steel plate shall not be knocked or otherwise vibrated. After standing for 72 hours, the manual gluing and pasting process is inspected and a small wooden hammer is used to knock for hollowing inspection. The hollowing area should not exceed 10% to ensure the overall structural quality.

[0082] S144, welding the weld between the flange ring 21 of the waterproof sleeve 2 and the first mounting plate 4.

[0083] This step uses manual arc welding to weld the weld between the flange of the waterproof sleeve 2 and the steel plate. It uses manual arc welding with welding equipment ZXE1-400 / 500, DC reverse connection, single arc; among them, welding materials: parent material brand: Q355B, welding rod brand: E5015. During welding, each circular weld is welded in a staggered sequence of forward and reverse, and the flange of the waterproof sleeve 2 and the steel plate are butt-welded. After the welding is completed and the cooling is completed, a water filling test is carried out. No leakage for 48 hours is qualified. This step connects the two firmly by welding, enhances the sealing and pressure bearing capacity of the joint between the waterproof sleeve 2 and the wall panel, and ensures the waterproof effect.

[0084] This embodiment uses the first chemical anchor 11 and the bonding method to double fix the first mounting plate 4, which significantly enhances the stability of the waterproof sleeve 2 in the wall panel structure 1 and prevents loosening and falling off due to force or vibration. In addition, the design of the ultra-wide mounting plate and the strict control of the hollowing rate improve the quality of concrete pouring and the reliability of the overall structure, and reduce the potential risk of leakage. Secondly, the welding flange ring 21 and the first mounting plate 4 increase the waterproof sealing performance of the connection part, effectively blocking moisture from passing through the wall panel structure 1 along the waterproof sleeve 2, and ensuring the integrity of the building waterproof system.

[0085] like Figure 3 or Figure 5 As shown, further, installing the second mounting plate 7 on the water-facing surface 103 of the wall panel structure 1 and the side of the first filling structure 6 close to the water-facing surface 103 includes:

[0086] S151, processing the surface of the water-facing surface 103 and / or the surface of the first filling structure 6 on the side close to the water-facing surface 103, so as to facilitate bonding with the second mounting plate 7;

[0087] In this step, when processing the surface with large convexity and concavity of the water-facing surface 103, a hand hammer should be used to knock the convex part, and the concave part should be filled with structural repair glue to make the surface relatively flat, and at the same time, the corners should be polished into rounded corners. Then, a roughening treatment is performed, using a 1.5 kg pneumatic pointed chisel hammer to chisel out fine concave points on the concrete bonding surface to form a point depth of about 3 mm and a uniform layout of 600 to 800 points per square meter. Then, a wire brush and a hair dryer are used to blow away the surface dust to improve the roughness and adhesion of the bonding surface. Similarly, the surface of the first filling structure 6 close to the water-facing surface 103 is treated in the same way.

[0088] S152, drilling a hole at a third preset position of the wall panel structure 1, and embedding a second chemical anchor bolt 12;

[0089] After the drilling is completed in this step, the drilling depth is checked. In this embodiment, the second chemical anchor bolt 12 of M12 is used, the drilling depth is 60mm, and the spacing is 125mm. In this step, use an air cylinder to blow away the powder in the hole, and use a brush to remove the powder attached to the inner wall of the hole, and ensure that the surface of the second chemical anchor bolt 12 is clean, dry, and free of oil. Confirm that the glass tube anchoring package has no abnormal phenomena such as appearance damage and solidification of the agent. Put it into the drug tube and check the fluidity of the resin by hand or visually, and try to make the white particles in the drug tube evenly distributed in the tube. After confirmation, put it into the anchor hole with the round head facing inward and push it to the bottom of the hole.

[0090] Then use an electric drill and a special installation fixture to forcefully rotate the screw until it reaches the bottom of the hole, so as to break the glass tube and forcefully mix the anchoring agent. The speed of the electric drill should be adjusted to a slow speed, and the impact method should not be used. Screw in the screw, the front end of the screw is buried with a 45-degree cut angle, the rear end is screwed into the hexagonal nut and driven by an electric tool to screw into the bottom of the hole. When it is rotated to the bottom of the hole or the marked position on the bolt, stop rotating immediately to confirm that the resin has risen to the vicinity of the hole mouth.

[0091] Remove the installation fixture, avoid disturbance after gelation and before complete solidification, and avoid overtime rotation which will cause glue loss and affect the anchoring force. In this step, the second chemical anchor bolt 12 is firmly anchored inside the wallboard structure 1 through the reaction solidification of the chemical anchoring agent, providing strong mechanical connection support for the second mounting plate 7.

[0092] S153, match the mounting hole of the second mounting plate 7 with the second chemical anchor bolt 12, so that the second mounting plate 7 is installed on the water-facing surface 103 and the side of the first filling structure 6 close to the water-facing surface 103; the second mounting plate 7 is wider than the edge of the installation space 101 by more than 150 mm, and the hollow area between the second mounting plate 7 and the water-facing surface 103 and the side of the first filling structure 6 close to the water-facing surface 103 does not exceed 10%;

[0093] In this step, the mounting hole of the second mounting plate 7 is matched with the second chemical anchor 12 to ensure a stable installation; the second mounting plate 7 is cut according to the design drawings and on-site conditions (the second mounting plate 7 is a steel plate with a thickness of 8 mm). According to the on-site conditions, the steel plate must be more than 150 mm wider than the edge of the removed installation space 101, ensuring that there is enough bonding area between the second mounting plate 7 and the wall panel structure 1 to enhance structural stability. Holes are drilled on-site according to the position of the waterproof sleeve 2 and the position of the second chemical anchor 12. Use is allowed only after the size is re-measured and qualified. The steel should be corrected before cutting, and the deviation after correction should not exceed the allowable deviation value of the specification to ensure the processing quality. Among them, after the bonding surface is corrected to remove the rust and oxide film, it is also necessary to use a grinding wheel for roughening.

[0094] S154, gently tap the second mounting plate 7 with a mallet to ensure that the injection gaps between the second mounting plate 7 and the water-facing surface 103 and the first filling structure 6 on the side close to the water-facing surface 103 are uniform;

[0095] Understandably, tapping gently with a mallet in this step helps release any internal stress that may exist, making the injection gaps uniform so that the subsequently injected colloid can evenly fill all gaps and improve the sealing effect.

[0096] S155, then insert the first end of the glue injection tube 13 into the glue injection gap between the second mounting plate 7 and the water-facing surface 103, and the insertion length of the first end is 6-7 mm, the first end is flat-mouthed, and the width of the first end is 0.8-1.2 mm, wherein a plurality of glue injection gaps together define a glue injection surface, and the glue injection tube 13 is arranged on the symmetry axis of the glue injection surface, and when the glue injection surface is a vertical surface, the glue injection tube 13 is arranged at the bottom;

[0097] It should be noted that the glue injection tube 13 in this step is made of a thin steel tube with a diameter of 8 mm and a thickness of 0.2 mm. A flat mouth shape is formed at one end by flattening it with pliers. The gap of the flat mouth shape (that is, the width of the first end) is preferably 1 mm. The first end of the glue injection tube 13 is inserted into the glue injection gap according to a predetermined position. Preferably, the first end is inserted 5 mm and not too deep to avoid serious air trapping on the same side.

[0098] S156. Pressure-inject glue into the injection gap through the glue injection tube 13 to fill the gaps between the second mounting plate 7 and the wall panel structure 1, the first filling structure 6 and the waterproof sleeve 2. When glue emerges from all the exhaust holes on the second mounting plate 7, seal the exhaust holes and fill for the second preset time. Stop injecting glue and then let it stand for a third preset time.

[0099] In this step, glue is filled into the glue injection gap to achieve seamless connection between the second mounting plate 7 and the water-facing surface 103 and the first filling structure 6 on the side close to the water-facing surface 103, thereby increasing the waterproof performance and preventing water from leaking from the interface. When glue emerges from all the exhaust holes, it indicates that the glue injection has been filled. After sealing the holes, glue injection is stopped after 10 minutes (that is, the second preset time). 72 hours after the glue injection is completed (that is, the third preset time), a small wooden hammer is used to knock on the steel plate to check for hollows, so as to strictly control the hollow rate, ensure the installation quality, and reduce the risk of leakage.

[0100] It should be noted that the structural adhesive should be prepared according to the instructions of the structural adhesive, and after being left to stand to eliminate bubbles as instructed, pressure injection should be carried out using an injection pump, and the injection process should be carried out slowly to ensure that the air can be effectively eliminated.

[0101] Furthermore, generally, a single sleeve can be provided with a glue injection tube and a vent hole according to the following requirements: The spacing of the vent holes is determined by the initial viscosity of the glue after mixing, such as Figure 4 or Figure 6 As shown in the circled part a, the circled position is the opening position of the exhaust hole, where:

[0102] When the injection surface is a horizontal plane, no vent hole is required at the same side as the injection tube 13, and the vent holes are arranged at the corner where the side intersects with the adjacent side. Vent holes should be set on the flow fusion surface of the structural glue to prevent air entrapment, generally on the edge of the sleeve flange facing away from the injection port. If the viscosity of the structural glue is lower than the preset value, the spacing between the vent holes is 95-105mm; if the viscosity of the structural glue is higher than the preset value, the spacing between the vent holes is 55-65mm.

[0103] When the injection surface is a vertical surface, an exhaust hole is opened at the highest point of the side opposite to the injection tube 13; if the viscosity of the structural adhesive is lower than the preset value, the spacing between the exhaust holes is 145-155mm; if the viscosity of the structural adhesive is higher than the preset value, the spacing between the exhaust holes is 85-95mm.

[0104] It should be noted that if the arrangement of the casing is complex and the position of the injection pipe 13 and the air trapping position is difficult to determine based on experience, CFD software (such as Fluent, Numeca) can be used for simulation, and a sliding grid model can be used for finite element analysis to determine the most favorable diffusion position to set the injection pipe 13; the most unfavorable air trapping position can be used to set the exhaust hole.

[0105] In addition, generally only one glue injection tube 13 is provided. If the most favorable diffusion position cannot be opened or it is difficult to perform glue injection operation, additional glue injection tubes and exhaust holes are provided according to the simulation results to ensure that the glue injection gap can be effectively filled.

[0106] When using pressure injection to bond steel, anchor bolts should be used to fix the steel plate. When fixing, steel gaskets should be added to leave a clear gap of about 2mm between the steel plate and the surface of the original component to prepare for pressure injection of glue. According to the confirmed exhaust plan, exhaust holes should be opened on the steel plate. The diameter of the exhaust holes on the steel plate should be 2mm.

[0107] Further, processing the surface of the water-facing surface 103 and / or the surface of the first filling structure 6 on the side close to the water-facing surface 103 includes:

[0108] S1511, removing the waterproof layer 9 on the surface of the water-facing surface 103 to form a first area for the second mounting plate 7 to be bonded;

[0109] In this step, in order to ensure that the second mounting plate 7 can form an effective bond with the wall panel structure 1, the original waterproof layer 9 in the direct contact area (i.e., the first area) where the second mounting plate 7 is to be installed must first be thoroughly removed to ensure that the new adhesive material can directly contact the base concrete of the wall panel structure 1, thereby achieving a stronger bond and improving the integrity and durability of the waterproof structure.

[0110] S1512, removing tiles from the surface of the water-facing surface 103 350 mm from the edge of the first area to form a second area;

[0111] In this step, in order to prepare for the subsequent construction of the second filling structure 8, a sufficiently wide buffer area is constructed around the second mounting plate 7, and the tiles there are manually chiseled off, but the original waterproof protective layer 10 is retained to facilitate special waterproof treatment or secondary waterproof reinforcement to prevent water from penetrating from the interface.

[0112] S1513, roughening and trimming the surfaces of the first area, the second area and / or the surface of the first filling structure 6 on the side close to the water-facing surface 103.

[0113] This step is used to ensure that the surface is clean, increase the contact area between the new waterproof material and the concrete, and improve the bonding strength. In addition, the finishing work also includes repairing and chiseling. The processing requirements are the same as when the steel plate on the back surface 102 is installed to ensure that the new waterproof material can adhere well.

[0114] The above steps are used in this embodiment to ensure that the second mounting plate 7 can establish a stable waterproof connection with the wall panel structure 1 and the surface of the first filling structure 6 close to the water-facing surface 103, prevent water from penetrating along the interface, enhance the continuity and effectiveness of the overall waterproof system, and extend the service life of the waterproof structure. At the same time, it also provides a good basic condition for the subsequent re-construction of the waterproof layer 9.

[0115] Furthermore, before the glue injection gap is pressure-injected with glue through the glue injection tube 13, the following steps are also included:

[0116] S1514, temporarily sealing the gap between the waterproof sleeve 2 and the second mounting plate 7 and the edge of the second mounting plate 7 using epoxy mortar;

[0117] This step utilizes the high strength and strong impermeability of epoxy mortar to preliminarily seal the gaps and edges between the waterproof casing 2 and the second mounting plate 7, which can prevent the loss of slurry during the injection process and ensure that the slurry can be fully filled into all tiny gaps, thereby enhancing the overall waterproof sealing effect. During the sealing process, attention should be paid to the fixation and protection of the injection tube 13.

[0118] S1515, 24 hours after the epoxy mortar plugging, temporarily plug the exhaust holes of the second mounting plate 7, then apply soapy water to each plugging location, use an air compressor to apply pressure to the glue injection tube 13, and check whether there is leakage;

[0119] Because the internal air needs to be removed before glue injection to prevent bubbles from being generated and affecting the sealing quality, this step temporarily blocks the exhaust hole to prevent the slurry from flowing out prematurely in the next pressure test stage. When there is a gas leak, bubbles will form on the soapy water film. The glue injection tube 13 is pressure tested by an air compressor to check the sealing of the temporary blockage and whether the junction between the waterproof sleeve 2 and the second mounting plate 7 is really leak-free.

[0120] S1516. If there is no leakage, remove the temporary blockage.

[0121] If the pressure test confirms that there is no leakage, it means that the joint between the waterproof sleeve 2 and the second mounting plate 7 has good sealing performance. At this time, the temporary blockage can be safely removed. According to the exhaust port plan, use a 1mm diameter drill bit to open a hole in the epoxy mortar layer. After all the exhaust holes are opened, use the injection hose to blow compressed air to clean them. Prepare for the formal pressure injection process.

[0122] This embodiment is used to achieve an ideal sealing state at the connection between the waterproof sleeve 2 and the second mounting plate 7 before pressure injection, thereby ensuring waterproof performance and structural stability after injection. By verifying the sealing performance through pressure testing, potential leakage problems can be discovered and repaired in time before injection, avoiding engineering quality problems caused by leakage.

[0123] like Figure 7 As shown, further, the second filling structure 8 is formed by casting concrete at the first preset position of the water-facing surface 103, including:

[0124] S161, supporting the formwork with a wooden formwork at the first preset position to form a second concrete pouring space;

[0125] This step is to prepare for the subsequent pouring of concrete. A new structural layer, namely, the second filling structure 8, is formed in this area by pouring concrete.

[0126] S162, wrap two butyl tapes arranged at intervals around the waterproof casing 2 to perform waterproof sealing treatment on the joint;

[0127] In this step, two layers of butyl tape arranged at intervals are pre-wound at the location where the waterproof sleeve 2 passes through the wall panel structure 1, that is, the location where it will contact the newly poured second filling structure 8. Butyl tape has good waterproof performance and adhesion. This treatment can effectively prevent moisture from penetrating through the joint between the waterproof sleeve 2 and the second filling structure 8, ensuring the waterproof effect.

[0128] S164, pouring concrete into the second concrete pouring space to form a second filling structure 8, wherein the second filling structure 8 is 250 mm wider than the edge of the second mounting plate 7.

[0129] The concrete pouring in this step is graded C20, and the anti-seepage grade requirement is ≥ P6. After the formwork and butyl tape waterproofing treatment have been completed, concrete is injected into the second pouring concrete space, and after solidification, a second filling structure 8 is formed. The width of this second filling structure 8 is greater than the edge of the second mounting plate 7 by 250 mm, which can further enhance the waterproof performance, cover possible leakage points in a larger range, and provide sufficient overlap length for the connection between the concrete and the wall panel structure 1 to ensure the integrity and stability of the structure.

[0130] In this embodiment, by adding a second filling structure 8 at the position where the waterproof sleeve 2 passes through the wall panel structure 1, the waterproof ability of the overall structure is effectively enhanced, the risk of water leakage from the passing point is reduced, and the long-term stability and safe use of the building structure are ensured. At the same time, reasonable layout and meticulous construction ensure that the various components are closely combined, improving the quality and durability of the waterproof project.

[0131] like Figure 8 As shown, further, constructing an additional waterproof layer 9 and a waterproof protective layer 10 outside the second filling structure 8 in sequence includes:

[0132] S171, performing trimming treatment on the surface of the second filling structure 8;

[0133] In this step, the surface treatment of the base layer of the second filling structure 8 must be carried out thoroughly. If there are cavities, cracks or uneven defects in the base layer, cement mortar should be used to fill them to achieve a smooth surface. Ensure that the base surface is stable, flat, and clean, without dust, oil stains, wax or any debris. The internal and external corners should be processed into arc shapes, and ensure that the curves are smooth and the surface is smooth. The above operations facilitate the subsequent additional waterproof layer 9 and the waterproof protective layer 10 to be better bonded to the additional layer to form a continuous and complete waterproof system.

[0134] S172, performing additional waterproofing treatment on the second filling structure 8;

[0135] At the inner corner of the second filling structure 8, additional waterproof treatment is performed in detail, and the range is 100mm in the horizontal direction of the wallboard structure 1 to enhance the waterproof ability of these parts and the overall waterproof performance;

[0136] S173, constructing an additional waterproof layer 9 outside the second filling structure 8;

[0137] This step is used to form a multiple waterproof protection barrier to greatly improve the waterproof effect, ensuring that even if a certain waterproof layer 9 fails in extreme weather or long-term use, there are still other waterproof layers 9 to provide effective protection, thereby reducing the risk of water leakage;

[0138] S174, applying a waterproof protective layer 10 outside the waterproof layer 9;

[0139] In this step, after the construction of the additional waterproof layer 9 is completed, the overall water-tightness test of the pool is carried out for 48 hours. After the supervisory acceptance is passed, the second filling structure 8 is coated with a cement mortar protective layer (that is, a waterproof protective layer 10), which can not only enhance the integrity of the waterproof structure, but also protect the underlying waterproof layer 9 from physical damage (such as collisions, scratches, etc.), ultraviolet radiation aging, and chemical erosion, and can also provide a certain mechanical support. In addition, the cement mortar protective layer is also conducive to drainage and preventing water accumulation, maintaining the long-term stability of the waterproof layer 9.

[0140] This embodiment comprehensively enhances the waterproofing ability and durability of the building structure through layer-by-layer stacking and refinement, ensuring that moisture can be effectively prevented from entering the wall or structure under various natural environments and usage conditions, thereby achieving a long-term waterproofing effect and good maintenance of the building.

[0141] Furthermore, constructing an additional waterproof layer 9 outside the second filling structure 8 includes:

[0142] S1731. Apply a waterproof coating multiple times outside the second filling structure 8 to form an additional waterproof layer 9; wherein the thickness of each layer of waterproof coating is controlled to be 0.5-0.6 mm, and the next layer of waterproof coating can be applied only when the previous layer of waterproof coating is dry and no longer sticky.

[0143] In this step, a waterproof barrier is added on the basis of the existing second filling structure 8 to enhance the waterproof effect and improve the water resistance of the structure; and according to the thickness specified in the design and waterproof products, it is applied multiple times to meet the requirements. The first coat is controlled at 0.6mm and the remaining coats are controlled at 0.5mm to ensure that the coverage of each layer is uniform. Too thick may make it difficult for the paint to dry thoroughly, and it is easy to have a dry surface and wet inside, affecting the waterproof effect and the bonding performance between the coatings; too thin may reduce the effective protective effect of the waterproof layer 9.

[0144] It is understandable that directly applying a new layer on a waterproof coating that has not dried completely will cause the upper and lower layers of waterproof coating to mix, affecting the adhesion between the waterproof coatings, and may even cause the waterproof coating to delaminate or peel off, seriously affecting the waterproof effect. Only when the previous layer of waterproof coating is completely cured and dried to the point where it is not sticky to the touch can the next layer of coating be applied to form a solid and continuous waterproof film, thereby effectively preventing water from penetrating and improving the overall waterproof performance. Through this construction method of stacking and blending layers, the integrity and durability of the waterproof layer 9 can be greatly enhanced.

[0145] Furthermore, the application directions of the layers of waterproof coating are perpendicular to each other, and the layers are applied in the order of vertically first and then horizontally.

[0146] When applying the first coat of waterproof coating, if it is applied horizontally, then when applying the second coat, it should be applied vertically, and so on, to ensure that the coating directions of each adjacent layer are crossed at 90 degrees. It can be understood that applying in different directions can make the waterproof coating penetrate deeper into the base texture and tiny cracks, forming a dense, continuous and interwoven coating film, enhancing the mechanical bite between the waterproof coatings, reducing the possibility of interlayer peeling, improving the adhesion of the waterproof coating, and forming a more stable waterproof barrier.

[0147] Furthermore, ceramic tiles 14 are attached to the outside of the waterproof protective layer 10 .

[0148] In this embodiment, after the waterproof protective layer 10 is dried to a suitable strength, the laying of the ceramic tiles 14 begins. The workers will use ceramic tile 14 adhesive or cement mortar to stick the ceramic tiles 14 on the protective layer to ensure that the ceramic tiles 14 are tightly combined with the wall to form a beautiful, hard and easy-to-clean surface. The ceramic tiles 14 not only beautify the appearance and increase the ease of cleaning of the pool wall, but also further improve the waterproof performance and durability due to their waterproof and wear-resistant properties.

[0149] In summary, the embodiment of the present invention provides a construction method for installing a waterproof sleeve 2 on an old wall panel structure 1, which can be widely used in old renovation projects, and can also be used in new construction projects as a reserved and embedded rectification measure, so that the structure at the drilled hole (that is, the installation space 101) is reinforced by externally gluing steel plates, effectively ensuring the structural safety after the new waterproof sleeve 2 is added. In addition, this construction method takes into account the treatment of structural waterproofing and building waterproofing at the same time. Through the combination of the above-mentioned additional waterproof layer 9, waterproof protective layer 10, pressure injection measures of the second installation plate, and multiple processes of the first installation plate, the location to be rebuilt is waterproofed, ensuring the waterproof quality of the wall panel structure 1 after the new waterproof sleeve 2 is added. Compared with traditional construction methods, it can greatly save the cost of demolition and modification.

[0150] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A construction method for installing a waterproof casing on an old wall panel structure, characterized in that: The steps include: Select the area to be constructed in the wall panel structure; Chiseling away the area to be constructed to leave space for installing the waterproof casing and retaining the steel bars of the wall panel structure; The waterproof sleeve is sleeved on the circumference of the pipeline and installed in the installation space; A first mounting plate is installed on the back water surface of the wall panel structure, and the first mounting plate is bonded to the back water surface, the first mounting plate is flush with the flange ring of the waterproof sleeve located on the back water surface, and the weld between the first mounting plate and the flange ring of the waterproof sleeve is welded to enclose the wall panel structure to form a first concrete pouring space; Concrete is poured in the first concrete pouring space to form a first filling structure, and after a first preset time, the surface of the water-facing surface and / or the surface of the first filling structure close to the water-facing surface is processed to facilitate bonding with the second mounting plate; Drilling a hole at a third preset position of the wall panel structure and embedding a second chemical anchor bolt; The mounting hole of the second mounting plate is matched with the second chemical anchor bolt, so that the second mounting plate is installed on the water-facing surface and the side of the first filling structure close to the water-facing surface; the second mounting plate is wider than the edge of the installation space by more than 150 mm, and the hollow area between the second mounting plate and the water-facing surface and the side of the first filling structure close to the water-facing surface does not exceed 10%; Lightly tap the second mounting plate with a mallet to ensure that the injection gap between the second mounting plate and the water-facing surface and / or the first filling structure on the side close to the water-facing surface is uniform; Then, the first end of the glue injection tube is inserted into the glue injection gap between the second mounting plate and the water-facing surface, and the insertion length of the first end is 6-7 mm, the first end is flat-mouthed, and the width of the first end is 0.8-1.2 mm, wherein a plurality of the glue injection gaps together define a glue injection surface, and the glue injection tube is arranged on the symmetry axis of the glue injection surface, and when the glue injection surface is a vertical surface, the glue injection tube is arranged at the bottom; The injection gap is injected with pressure glue through the injection tube to fill the injection gap between the second mounting plate and the wall panel structure, the first filling structure and the waterproof sleeve. When glue comes out of all the vents on the second mounting plate, the vents are sealed and the injection is stopped after the second preset time. Then, the vents are left standing for a third preset time, and then the second mounting plate is knocked with a small hammer to check for hollows. Casting concrete at a first preset position on the water-facing surface to form a second filling structure, wherein a side of the second filling structure facing away from the water-facing surface is flush with the bottom of the flange of the waterproof sleeve located on the water-facing surface; An additional waterproof layer and a waterproof protective layer are sequentially added outside the second filling structure.

2. The construction method according to claim 1, characterized in that: The step of installing a first mounting plate on the back surface of the wall panel structure comprises: Processing the surface of the water-receiving surface to facilitate bonding with the first mounting plate; Drilling a hole at a second preset position of the wall panel structure and embedding a first chemical anchor bolt; Match the mounting hole of the first mounting plate with the first chemical anchor bolt, and bond the first mounting plate to the back water surface, so that the first mounting plate is more than 150 mm wider than the edge of the mounting space, and the hollow area between the first mounting plate and the back water surface does not exceed 10%; The weld between the flange ring of the waterproof sleeve and the first mounting plate is welded.

3. The construction method according to claim 1, characterized in that: When the injection surface is a horizontal plane, no vent holes are required at the same side as the injection tube, and vent holes are arranged at the corner where the side intersects with the adjacent side, and vent holes should be set on the flow fusion surface of the structural glue to prevent air entrapment; if the viscosity of the structural glue is lower than the preset value, the spacing between the vent holes is 95-105mm; if the viscosity of the structural glue is higher than the preset value, the spacing between the vent holes is 55-65mm; When the injection surface is a vertical surface, an exhaust hole is opened at the highest point of the side opposite to the side where the injection tube is located; if the viscosity of the structural adhesive is lower than the preset value, the spacing between the exhaust holes is 145-155mm; if the viscosity of the structural adhesive is higher than the preset value, the spacing between the exhaust holes is 85-95mm.

4. The construction method according to claim 1, characterized in that: Processing the surface of the water-facing surface and / or the surface of the first filling structure close to the water-facing surface includes: Removing the waterproof layer from the surface of the water-facing surface to form a first area for the second mounting board to be bonded; Removing tiles from the water-facing surface 350 mm from the edge of the first area to form a second area; The surfaces of the first area, the second area and / or the first filling structure on the side close to the water-facing surface are roughened and trimmed.

5. The construction method according to claim 1, characterized in that: Before the glue injection gap is pressure-injected with glue through the glue injection tube, the following steps are also included: Temporarily seal the gap between the waterproof sleeve and the second mounting plate and the edge of the second mounting plate using epoxy mortar; 24 hours after the epoxy mortar is sealed, temporarily seal the exhaust holes of the second mounting plate, then apply soapy water to each sealed area, use an air compressor to apply pressure to the injection pipe, and check for leaks; If no leaks exist, remove the temporary plug.

6. The construction method according to claim 1, characterized in that: Forming and pouring concrete at a first preset position on the water-facing surface to form a second filling structure includes: Providing wooden formwork at the first preset position to form a second concrete pouring space; Wrap two butyl tapes at intervals around the waterproof casing to waterproof and seal the joints; Concrete is poured into the second concrete pouring space to form a second filling structure, wherein the second filling structure is 250 mm wider than the edge of the second mounting plate.

7. The construction method according to claim 1, characterized in that: The step of sequentially constructing an additional waterproof layer and a waterproof protective layer outside the second filling structure comprises: performing a finishing process on the surface of the second filling structure; Performing additional waterproofing treatment on the second filling structure; constructing an additional waterproof layer outside the second filling structure; A waterproof protective layer is applied outside the waterproof layer.

8. The construction method according to claim 7, characterized in that: The constructing of an additional waterproof layer outside the second filling structure comprises: Apply a waterproof coating multiple times outside the second filling structure to form an additional waterproof layer; wherein the thickness of each layer of the waterproof coating is controlled to be 0.5-0.6mm, and the next layer of the waterproof coating can be applied only when the previous layer of the waterproof coating is dry and no longer sticky.

9. The construction method according to claim 1, characterized in that: Ceramic tiles are attached to the outside of the waterproof protective layer.

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