Construction method for combining basement outer wall and fender post

Abstract

The invention relates to the technical field of basement outer walls, and discloses a basement outer wall and fender post combined construction method which comprises the steps that (1) an enclosure structure is provided with an inward side face and is subjected to chiseling treatment; (2) a reinforcing mesh is hung towards the inner side face; (3) concrete is sprayed on the inward side face to be solidified to form a base layer; (4) positioning steel bars are inserted into the positioning holes; (5) after the waterproof roll is fixed to the base layer, the positioning steel bars are pulled out; 6) cleaning the positioning holes and inserting the embedded steel bars into the positioning holes; (7) glue liquid is injected into the positioning holes until the glue liquid overflows, the outer end opening is closed through a water stop ring, and the embedded steel bars are fixed through the glue liquid; (8) waist beam steel bars, outer wall steel bars and embedded steel bars are connected to form a steel bar cage frame; erecting a template; and (9) concrete is poured, and the basement outer wall and the enclosure structure form an integrated structure, so that the tedious connection treatment procedures are reduced, the construction efficiency is improved, meanwhile, the waterproof performance and the connection reliability of the structure are improved, and the stability and the safety of the basement are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of basement exterior walls, and in particular to a construction method combining a basement exterior wall with retaining piles. Background Art

[0002] In basement construction, the construction of basement exterior walls and retaining piles has always been a key link. In existing technologies, the disadvantages of separate construction of basement exterior walls and retaining piles have gradually become apparent, mainly reflected in the following aspects: In terms of construction efficiency, after the construction of the retaining piles is completed, tedious processes such as roughening, hanging steel mesh, and spraying concrete are required to form the base layer. The various processes cannot be carried out in a coordinated manner, which extends the construction period. The drilling of positioning holes, insertion of embedded steel bars, and injection of glue are also difficult to complete efficiently due to separate construction, which increases construction costs.

[0003] The connection between the basement's exterior wall and the retaining piles is a weak point in waterproofing. During traditional construction, where the positioning rebar passes through the waterproofing membrane, leakage channels are easily formed. The installation of the waterproofing membrane and the anchoring of the rebar are not coordinated, resulting in poor overall waterproofing performance and a high risk of groundwater leakage.

[0004] In terms of connection reliability, long-term influences from soil lateral pressure, groundwater pressure, and settlement have led to cracks and loosening in the joints. The bending arrangement of the embedded and external sections of the rebar, as well as the injection of adhesive, have been poor, resulting in poor anchoring and threatening the structural safety of the basement. Summary of the Invention

[0005] The purpose of the present invention is to provide a construction method for combining basement outer walls with retaining piles, aiming to solve the problem of low efficiency in the prior art of separate construction of basement outer walls and retaining piles.

[0006] The present invention is achieved by a construction method combining a basement outer wall with retaining piles, comprising the following construction steps: 1) The outer periphery of the foundation pit is provided with a plurality of retaining piles, which are arranged around the circumference of the foundation pit and form a retaining structure enclosing the outer periphery of the foundation pit; the enclosing structure has an inward side surface facing the foundation pit, and the inward side surface is roughened; 2) Hanging a steel mesh on the inner side; 3) spraying concrete on the inner side surface, the concrete covering the inner side surface and the steel mesh, and forming a base layer covering the inner side surface after the concrete solidifies; 4) Drilling a positioning hole in the base layer, with the inner end of the positioning hole extending into the retaining pile, and the outer end of the positioning hole penetrating the base layer to form an outer end opening; inserting a positioning steel bar into the positioning hole, with the positioning steel bar extending to the outside of the base layer; 5) Laying the waterproof coiled material on the base layer, passing the positioning steel bars through the waterproof coiled material to position the waterproof coiled material on the base layer; after fixing the waterproof coiled material on the base layer, pulling out the positioning steel bars; 6) Clean the positioning hole and insert the embedded steel bar into the positioning hole. The embedded steel bar has an embedded section and an external section. The embedded section is inserted into the positioning hole. The external section extends outside the base layer and is bent with the embedded section. 7) Inject glue into the positioning hole until the glue overflows from the outer opening, then seal the outer opening with a water stop ring, and allow the implanted section to pass through the water stop ring. The water stop ring seals the outer opening, and the embedded steel bar is fixed by the glue; 8) Tie waist beam steel bars and outer wall steel bars on the waterproof coiled material, and connect the waist beam steel bars and outer wall steel bars with the embedded steel bars to form an integrated steel cage; support a template on the waterproof coiled material, and form a mold cavity between the template and the waterproof coiled material, and place the steel cage in the mold cavity; 9) Concrete is poured into the mold cavity. After the concrete solidifies, the basement outer wall and the waist beam on the basement outer wall are formed. The basement outer wall and the enclosed structure form an integrated structure.

[0007] Furthermore, in the construction step 1), during the roughening process on the inner side surface, the roughening depth is controlled to be 5 mm to 10 mm.

[0008] Furthermore, in the construction step 3), the thickness of the base layer is 5 cm to 6 cm.

[0009] Furthermore, in the construction step 4), the diameter of the positioning hole is 4 mm to 6 mm larger than the diameter of the implanted section of the embedded steel bar. After the positioning hole is constructed, dust in the positioning hole is cleaned, and then the positioning steel bar is inserted into the positioning hole. The positioning steel bar has an extension section extending outside the positioning hole, and the length of the extension section is 2 cm to 3 cm. In the construction step 5), after the waterproofing membrane is laid on the base layer, the extension section passes through the waterproofing membrane to position the waterproofing membrane on the base layer.

[0010] Furthermore, in the construction step 5), a treatment agent is applied on the base layer. After the treatment agent dries, a treatment layer covering the base layer is formed. The waterproof membrane is covered on the treatment layer and fixed to the base layer with a plurality of nails.

[0011] Furthermore, in the construction step 5), a plurality of the nails are arranged at intervals along the circumference of the waterproof membrane; the waterproof membrane has overlapping portions, the overlapping portions are arranged in strips, and the overlapping portions are sealed by adhesive.

[0012] Furthermore, in the construction step 7), during the process of sealing the water stop ring, the water stop ring is inserted into the positioning hole until the glue in the positioning hole stops overflowing, and then the water stop ring is stopped. After the water stop ring is fixedly sealed at the outer end opening, glue is sprayed on the periphery of the water stop ring and the outer end opening to form an outer covering layer, which covers the water stop ring.

[0013] Furthermore, in the construction step 9), during the process of pouring concrete into the mold cavity, the concrete is poured layer by layer along the height direction of the mold cavity until the concrete fills the mold cavity; each time a layer of concrete is poured into the mold cavity, a vibrating shaft is inserted into the concrete to vibrate it to make the concrete dense.

[0014] Furthermore, in the construction step 6), the central portion of the implant segment has a central disc protruding outward, the central disc is arranged around the circumference of the implant segment, and the outer periphery of the central disc abuts against the inner side wall of the positioning hole; the outer periphery of the implant segment is formed with a plurality of elastic sheets, and the plurality of elastic sheets are arranged around the circumference of the implant segment at intervals; The two ends of the elastic sheet are respectively fixedly connected to the implantation section, the middle portion of the elastic sheet protrudes outward and is connected to the outer periphery of the middle disk, a plurality of the elastic sheets enclose a bulging area, the middle disk is located in the bulging area, and adjacent elastic sheets are spaced apart from each other to connect to the outer periphery of the bulging area; In the construction step 7), after the glue is injected into the positioning hole, the glue passes through the peripheral interval and fills the bulging area, and the glue wraps the multiple elastic sheets and the implantation segment.

[0015] Furthermore, in the construction step 6), the implant segment has a hollow channel inside, the hollow channel is arranged along the axial direction of the implant segment; the outer end of the hollow channel is arranged closed, and the inner end of the hollow channel has an inner end opening; the outer periphery of the implant segment has a plurality of through holes, and the hollow channel is connected to the bulging area through the through holes; In the construction step 7), the inner end opening of the implantation segment is arranged toward the bottom of the positioning hole, and glue is injected from the bottom of the positioning hole. The glue enters the hollow channel through the inner end opening, fills the hollow channel, and flows to the bulging area through the multiple through holes.

[0016] Compared with the existing technology, the construction method of combining basement exterior walls with retaining piles provided by the present invention has the following technical advantages: 1) The roughening treatment forms the base layer, which can provide a good foundation for subsequent construction and avoid the need for additional treatment due to loose connection between the base layer and the retaining piles, saving time and manpower. Then, drilling positioning holes and inserting positioning steel bars can reduce repeated adjustments due to inaccurate positioning, thereby improving construction efficiency. 2) When laying the waterproof membrane on the base layer, positioning steel bars are used to position and fix it to ensure stability and sealing. This avoids interference between the laying of the waterproof membrane and the subsequent planting of steel bars, simplifies the construction process, and improves the efficiency and quality of waterproofing construction. Subsequently, the implanted section and the external section of the planting steel bars are bent to enhance the structural connection strength. Glue is injected and the water stop ring is sealed to improve the waterproof performance and structural stability of the connection. The operation is closely connected, avoiding the cumbersome process and time waste caused by separate construction. 3) Tie steel bars to the waterproof membrane and connect them to form an integrated steel cage, which achieves a tight connection between the basement exterior wall and the retaining piles. After setting up the formwork and pouring concrete, the basement exterior wall is integrated with the enclosed structure, improving the structural integrity and bearing capacity. Moreover, the entire construction process is closely integrated, reducing tedious connection processing procedures, reducing construction costs, shortening the cycle, and significantly improving construction efficiency. At the same time, it improves the waterproof performance and connection reliability, ensuring the long-term stability and safety of the basement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic flow chart of the construction method of combining the basement exterior wall with the retaining piles provided by the present invention; Figure 2 It is a top view schematic diagram of the foundation pit provided by the present invention; Figure 3 is a schematic cross-sectional view of a retaining pile provided by the present invention; Figure 4 It is a schematic cross-sectional view of the structure of the positioning hole provided by the present invention; In the figure: foundation pit 100, retaining piles 101, retaining structure 102, inner side 103, waterproof membrane 104, base layer 105; Embedded rebar 200 , embedded section 201 , outer section 202 , middle plate 203 , elastic sheet 204 , bulging area 205 , hollow channel 206 , through hole 207 , positioning hole 208 . DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0020] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] Reference Figure 1-4 The figure shows a preferred embodiment of the present invention.

[0022] The construction method of combining the basement exterior wall with the retaining piles includes the following construction steps: 1) The outer periphery of the foundation pit 100 is provided with a plurality of retaining piles 101, which are arranged around the circumference of the foundation pit 100 and form a retaining structure 102 enclosing the outer periphery of the foundation pit 100; the enclosing structure has an inward side surface 103 facing the foundation pit 100, and the inward side surface 103 is roughened; 2) Hanging a steel mesh on the inner side surface 103; 3) spraying concrete on the inner side surface 103, the concrete covering the inner side surface 103 and the steel mesh, and forming a base layer 105 covering the inner side surface 103 after the concrete solidifies; 4) Drilling a positioning hole 208 in the base layer 105, with the inner end of the positioning hole 208 extending into the retaining pile 101, and the outer end of the positioning hole 208 penetrating the base layer 105 to form an outer end opening; inserting a positioning steel bar into the positioning hole 208, with the positioning steel bar extending to the outside of the base layer 105; 5) Laying the waterproof coiled material 104 on the base layer 105, and passing the positioning steel bars through the waterproof coiled material 104 to position the waterproof coiled material 104 on the base layer 105; after fixing the waterproof coiled material 104 on the base layer 105, pulling out the positioning steel bars; 6) Clean the positioning hole 208 and insert the embedded steel bar 200 into the positioning hole 208. The embedded steel bar 200 has an embedded section 201 and an external section 202. The embedded section 201 is inserted into the positioning hole 208. The external section 202 extends outside the base layer 105 and is bent with the embedded section 201. 7) Inject glue into the positioning hole 208 until the glue overflows from the outer opening, then seal the outer opening with a water stop ring, and allow the implantation section 201 to pass through the water stop ring. The water stop ring seals the outer opening, and the embedded steel bar 200 is fixed by the glue; 8) Tie waist beam steel bars and outer wall steel bars on the waterproof coiled material 104, and connect the waist beam steel bars and outer wall steel bars to the embedded steel bars 200 to form an integrated steel cage; support a template on the waterproof coiled material 104, and form a mold cavity between the template and the waterproof coiled material 104, and place the steel cage in the mold cavity; 9) Concrete is poured into the mold cavity. After the concrete solidifies, the basement outer wall and the waist beam on the basement outer wall are formed. The basement outer wall and the enclosed structure form an integrated structure.

[0023] The above-mentioned construction method combining the basement exterior wall with the retaining piles 101 has the following technical advantages: 1) The base layer 105 is formed by roughening, which provides a good foundation for subsequent construction and avoids the need for additional treatment due to loose connection between the base layer 105 and the retaining piles 101, saving time and manpower. Next, the positioning holes 208 are drilled and the positioning steel bars are inserted, which can reduce repeated adjustments due to inaccurate positioning, thereby improving construction efficiency. 2) When laying the waterproofing membrane 104 on the base layer 105, positioning steel bars are used to position and fix it to ensure stability and sealing, avoiding interference between the laying of the waterproofing membrane 104 and the subsequent planting operation, simplifying the construction process, and improving the efficiency and quality of waterproofing construction. Subsequently, the implantation section 201 and the outer section 202 of the planting steel bar 200 are bent and arranged to enhance the structural connection strength. Glue is injected and the water stop ring is sealed to improve the waterproof performance and structural stability of the connection part. The operation is closely connected, avoiding the cumbersome process and time waste caused by separate construction. 3) Steel bars are tied to the waterproof membrane 104 and connected to form an integrated steel cage, which achieves a tight connection between the basement exterior wall and the retaining piles 101. After the formwork is set up and concrete is poured, the basement exterior wall is integrated with the enclosed structure, improving the structural integrity and bearing capacity. Moreover, the entire construction process is closely integrated, reducing tedious connection processing procedures, reducing construction costs, shortening the cycle, and significantly improving construction efficiency. At the same time, it improves the waterproof performance and connection reliability, ensuring the long-term stability and safety of the basement.

[0024] In this embodiment, in the construction step 1), during the roughening process of the inner side surface 103 , the roughening depth is controlled to be 5 mm to 10 mm.

[0025] In this way, it is possible to ensure a close bond between the inner side surface 103 of the retaining pile 101 and the subsequent sprayed concrete, thereby improving the connection strength between the base layer 105 and the retaining pile 101. The chiseling depth is within this range, which can not only ensure that the surface roughness meets the bonding requirements, but also avoid damage to the retaining pile 101 structure caused by excessive chiseling, thereby providing good basic conditions for subsequent construction.

[0026] In this embodiment, in construction step 3), the thickness of the base layer 105 is 5 cm to 6 cm.

[0027] In this way, it can ensure that the steel mesh is fully wrapped and the inner side 103 of the retaining pile 101 is effectively covered, and the stability of the structure of the base layer 105 itself can be ensured, avoiding material waste and bloated structure due to the base layer 105 being too thick, or the base layer 105 being too thin to meet construction requirements, and providing a solid and reliable platform for subsequent operations such as drilling positioning holes 208, laying waterproof membrane 104 and tying steel bars on the base layer 105.

[0028] In this embodiment, in construction step 4), the diameter of the positioning hole 208 is 4 mm to 6 mm larger than the diameter of the implantation section 201 of the implanted steel bar 200. After the positioning hole 208 is completed, the dust in the positioning hole 208 is cleaned, and then the positioning steel bar is inserted into the positioning hole 208. The positioning steel bar has an extension section extending outside the positioning hole 208, and the length of the extension section is 2 cm to 3 cm. In the construction step 5), after the waterproofing coiled material 104 is laid on the base layer 105 , the extension section passes through the waterproofing coiled material 104 to position the waterproofing coiled material 104 on the base layer 105 .

[0029] By rationally coordinating the diameter of the positioning hole 208 and the embedded steel bar 200, and accurately setting the extended section of the positioning steel bar, it is ensured that the positioning steel bar can be stably inserted into the positioning hole 208 and reliably position the waterproof membrane 104. Cleaning the dust in the positioning hole 208 avoids the influence of impurities on the subsequent bonding strength between the embedded steel bar 200 and the positioning hole 208. The extended section passes through the waterproof membrane 104 to achieve rapid positioning, thereby improving construction efficiency.

[0030] In this embodiment, in construction step 5), a treatment agent is applied on the base layer 105. After the treatment agent dries, a treatment layer covering the base layer 105 is formed. The waterproof membrane 104 covers the treatment layer and is fixed to the base layer 105 using multiple nails.

[0031] The treatment layer formed by applying the treatment agent enhances the bonding force between the base layer 105 and the waterproof membrane 104, so that the waterproof membrane 104 is tightly combined with the base layer 105, thereby improving the reliability of the waterproof performance. Among them, the use of nails further ensures the stability of the waterproof membrane 104 on the base layer 105, preventing the waterproof membrane 104 from shifting or loosening during the subsequent construction process, thereby ensuring the durability of the waterproof effect.

[0032] In this embodiment, in construction step 5), a plurality of nails are arranged around the circumference of the waterproof membrane 104 at intervals; the waterproof membrane 104 has overlapping portions, which are arranged in strips and are sealed by adhesive.

[0033] The circumferential spacing of the nails ensures uniform fixing of the waterproof membrane 104 as a whole, avoiding local over-tightening or over-loosening. The strip arrangement of the overlapped parts and the adhesive adhesion seal enhance the tightness of the connection between the waterproof membranes 104, effectively preventing groundwater from leaking from the overlapped parts, and improving the integrity and sealing of the waterproof system.

[0034] In this embodiment, in construction step 7), during the process of sealing the water stop ring, the water stop ring is inserted into the positioning hole 208 until the glue in the positioning hole 208 stops overflowing, and then the sealing of the water stop ring is stopped; After the water stop ring is fixedly sealed at the outer end opening, glue is sprayed on the periphery of the water stop ring and the outer end opening to form an outer covering layer, which covers the water stop ring.

[0035] By properly inserting the water stop ring, the outer end opening of the positioning hole 208 is tightly sealed to prevent groundwater from seeping in from the positioning hole 208. Then, the setting of the outer covering layer further enhances the sealing effect of the water stop ring, extends the service life of the water stop ring, and improves the waterproof performance and structural durability of the connection part.

[0036] In this embodiment, in construction step 9), during the process of pouring concrete into the mold cavity, the concrete is poured layer by layer along the height direction of the mold cavity until the concrete fills the mold cavity; each time a layer of concrete is poured in the mold cavity, a vibrating shaft is inserted into the concrete to vibrate it to make the concrete dense.

[0037] By pouring concrete in layers and vibrating it with a vibrating shaft, we ensure that the concrete can fully fill every corner of the mold cavity, avoiding concrete defects such as honeycombs and rough surfaces, improving the structural strength and integrity of the basement exterior walls and waist beams, and ensuring construction quality.

[0038] In this embodiment, in construction step 6), the central portion of the implant segment 201 has a central plate 203 that protrudes outward. The central plate 203 is arranged around the circumference of the implant segment 201, and the outer periphery of the central plate 203 abuts against the inner side wall of the positioning hole 208. The outer periphery of the implant segment 201 is formed with a plurality of elastic sheets 204, and the plurality of elastic sheets 204 are arranged around the circumference of the implant segment 201 at intervals. The two ends of the elastic sheet 204 are respectively fixedly connected to the implant segment 201. The middle portion of the elastic sheet 204 protrudes outward and is connected to the periphery of the middle disk 203. The plurality of elastic sheets 204 enclose a bulging area 205. The middle disk 203 is located in the bulging area 205. Adjacent elastic sheets 204 have a peripheral gap connecting to the bulging area 205. In the construction step 7), after the glue is injected into the positioning hole 208 , the glue passes through the peripheral interval and fills the bulging area 205 , and the glue wraps the multiple elastic sheets 204 and the implantation segment 201 .

[0039] By setting the middle plate 203 and the elastic sheet 204 and filling with glue, the gripping force and bonding strength between the embedded steel bars 200 and the positioning holes 208 are enhanced, the anchoring effect of the embedded steel bars 200 is improved, and the connection between the basement outer wall and the retaining piles 101 is made more firm and reliable. At the same time, the deformation of the elastic sheet 204 is utilized to facilitate the insertion of the embedded steel bars 200 into the positioning holes 208, saving construction time and improving construction efficiency.

[0040] In this embodiment, in construction step 6), the implant segment 201 has a hollow channel 206 inside, and the hollow channel 206 is arranged along the axial direction of the implant segment 201; the outer end of the hollow channel 206 is arranged to be closed, and the inner end of the hollow channel 206 has an inner end opening; the outer periphery of the implant segment 201 has a plurality of through holes 207, and the hollow channel 206 is connected to the bulging area 205 through the through holes 207; In the construction step 7), the inner end opening of the implantation segment 201 is arranged toward the bottom of the positioning hole 208, and the glue is injected starting from the bottom of the positioning hole 208. The glue enters the hollow channel 206 through the inner end opening, fills the hollow channel 206, and flows to the bulging area 205 through the multiple through holes 207.

[0041] By setting the hollow channel 206 and the through hole 207, the glue can fully fill the interior of the implantation section 201 and the bulging area 205, further improving the bonding strength between the embedded steel bar 200 and the positioning hole 208, and ensuring a reliable connection between the two. The method of injecting glue from the bottom also ensures the fullness of the glue injection, improves the construction quality, and at the same time reduces the blind spots of glue injection, saves glue usage, and reduces construction costs.

[0042] Hereinafter, the technical solutions in the embodiments of the present invention will be described in detail, clearly and completely in combination with the embodiments of the present invention, so that the content of the construction method combining the basement outer wall with the retaining piles is easier to understand.

[0043] (1) Project Overview A certain basement project has 3 underground floors and a foundation pit depth of 15m. According to the project design requirements, a construction method combining the basement exterior wall with retaining piles is adopted.

[0044] (2) Construction steps 1. Roughening treatment of retaining piles: Use appropriate roughening equipment to evenly roughen the inner side of the retaining piles facing the foundation pit. The roughening depth should be controlled at 5-10mm to ensure a rough surface to facilitate subsequent mesh hanging and connection.

[0045] 2. Use mesh sprayed concrete to form the base layer: Lay the steel mesh on the inner side of the roughened retaining pile. The specifications of the steel mesh should meet the design requirements. Then use the sprayed concrete equipment to spray 5-6cm thick C20 concrete. Control the spraying pressure and angle during the spraying process to ensure that the concrete is evenly covered and tightly combined with the steel mesh.

[0046] 3. Drill positioning holes and insert positioning steel bars: According to the design drawings, use an electric drill to drill positioning holes in the base layer. The diameter of the positioning holes should be 4-6mm larger than the diameter of the implanted section of the rebar, and the hole depth should meet the design requirements. After drilling, clean the dust in the holes and insert the positioning steel bars. The positioning steel bars have an extension section extending to the outside of the base layer. The extension section is 2-3cm long and is used for the subsequent positioning of the waterproof membrane.

[0047] 4. Laying the waterproof membrane: Apply a treatment agent evenly to the base layer. After drying, form a treatment layer. Select a self-adhesive waterproof membrane that meets the design requirements and lay it evenly on the treatment layer. Pass the extended section of the positioning steel bar through the waterproof membrane to position the waterproof membrane on the base layer. Use multiple nails arranged around the circumference of the waterproof membrane to secure it to the base layer. The spacing between the nails should be controlled at 30-50cm. The overlapping parts of the waterproof membrane should be arranged in strips and sealed with adhesive. The overlap width should be no less than 100mm to ensure the waterproof effect.

[0048] 5. Inject glue to plant rebar and plug in water stop ring: Carefully remove the positioning steel bars, clean up the debris in the hole again, and insert the anchored rebar that is bent according to the design requirements into the hole. The rebar has an implantation section and an external section. The implantation section is inserted into the positioning hole, and the external section extends outside the base layer and is bent and arranged with the implantation section. Use an implant glue injection gun to inject implant glue into the hole. The amount of glue injected should be such that the implant glue can overflow from the outer opening. After the implant glue overflows, quickly pass the water-expanding water stop ring through the rebar to make it fit tightly into the hole to prevent the implant glue from flowing out and ensure that the implant glue is fully bonded to the hole wall and the steel bars. Subsequently, seal the water stop ring at the outer opening and spray glue on the periphery of the water stop ring and the outer opening to form an outer covering layer to further enhance the sealing.

[0049] 6. Rebar testing: After the rebar glue reaches the design strength, a certain number of rebars shall be randomly selected for pull-out strength testing in accordance with relevant testing standards. The test results shall meet the design requirements. If there are any unqualified results, the reasons shall be analyzed and rectification shall be carried out, and retest shall be carried out until they are qualified.

[0050] 7. Tie the waist beam steel bars and the exterior wall steel bars: According to the design reinforcement requirements, process and manufacture the waist beam steel bars and the exterior wall steel bars at the construction site. Tie the waist beam steel bars first, and then tie and connect the exterior wall steel bars with the waist beam steel bars and the embedded steel bars to form an integrated steel cage. Ensure that the spacing, quantity, and anchorage length of the steel bars meet the design requirements. The steel bars are tied firmly to form a stable steel skeleton.

[0051] 8. Support the formwork: Support the formwork on the waterproof membrane. The formwork can be steel or wooden. Select the appropriate support system according to the actual situation to ensure that the formwork has sufficient strength, rigidity and stability. The formwork and the waterproof membrane are enclosed to form a mold cavity, and the steel cage is placed in the mold cavity.

[0052] 9. Concrete Pouring: Use C40 self-waterproof concrete with a W8 impermeability rating. Use a concrete pump to deliver the concrete to the pouring site. During the pouring process, pour the concrete in layers along the mold cavity, maintaining a thickness of 30-50 cm per layer. Use an insert vibrator to compact the concrete surface, ensuring it is free of air bubbles, honeycombs, and other defects. After pouring, perform a curing operation promptly for at least 14 days to ensure that the basement exterior wall and retaining piles form a tightly integrated structure.

[0053] (3) Beneficial effects 1. Simplify the construction process: By hanging a mesh and spraying concrete on the inner side of the retaining pile to form a base layer, and laying a waterproof membrane as a formwork on one side, the formwork support process is reduced. Combined with the layered concrete pouring and vibration process, the construction steps are further optimized, the construction period is effectively shortened, and the construction cost is reduced.

[0054] 2. Enhanced waterproof performance: At the connection between the retaining piles and the basement outer wall, a series of waterproofing measures are taken, including roughening, mesh spraying concrete, laying waterproof membranes, setting water stop rings and outer covering layers at the rebar holes, which significantly improves the anti-seepage ability of the basement side wall and reduces the risk of leakage.

[0055] 3. Improve connection strength: After roughening the retaining piles, mesh spraying concrete is applied, and the rebar is planted using bent anchors according to design requirements. At the same time, the middle plate and elastic sheet structure are used to enhance the bonding strength between the rebar and the positioning holes, thereby enhancing the connection strength between the retaining piles and the basement exterior wall and improving the overall stability and bearing capacity of the structure.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The construction method of combining basement exterior wall with retaining piles is characterized by: The construction steps include: 1) The outer periphery of the foundation pit is provided with a plurality of retaining piles, which are arranged around the circumference of the foundation pit and form a retaining structure enclosing the outer periphery of the foundation pit; the enclosing structure has an inward side surface facing the foundation pit, and the inward side surface is roughened; 2) Hanging a steel mesh on the inner side; 3) spraying concrete on the inner side surface, the concrete covering the inner side surface and the steel mesh, and forming a base layer covering the inner side surface after the concrete solidifies; 4) Drilling a positioning hole in the base layer, with the inner end of the positioning hole extending into the retaining pile, and the outer end of the positioning hole penetrating the base layer to form an outer end opening; inserting a positioning steel bar into the positioning hole, with the positioning steel bar extending to the outside of the base layer; 5) Laying the waterproof coiled material on the base layer, passing the positioning steel bars through the waterproof coiled material to position the waterproof coiled material on the base layer; after fixing the waterproof coiled material on the base layer, pulling out the positioning steel bars; 6) Clean the positioning hole and insert the embedded steel bar into the positioning hole. The embedded steel bar has an embedded section and an external section. The embedded section is inserted into the positioning hole. The external section extends outside the base layer and is bent with the embedded section. 7) Inject glue into the positioning hole until the glue overflows from the outer opening, then seal the outer opening with a water stop ring, and allow the implanted section to pass through the water stop ring. The water stop ring seals the outer opening, and the embedded steel bar is fixed by the glue; 8) Tie waist beam steel bars and outer wall steel bars on the waterproof coiled material, and connect the waist beam steel bars and outer wall steel bars with the embedded steel bars to form an integrated steel cage; support a template on the waterproof coiled material, and form a mold cavity between the template and the waterproof coiled material, and place the steel cage in the mold cavity; 9) Concrete is poured into the mold cavity. After the concrete solidifies, the basement outer wall and the waist beam on the basement outer wall are formed. The basement outer wall and the enclosed structure form an integrated structure.

2. The construction method for combining basement exterior walls with retaining piles as claimed in claim 1, characterized in that: In the construction step 1), during the roughening process on the inner side surface, the roughening depth is controlled to be 5 mm to 10 mm.

3. The construction method for combining basement exterior walls with retaining piles as claimed in claim 1, characterized in that: In the construction step 3), the thickness of the base layer is 5 cm to 6 cm.

4. The construction method for combining basement exterior walls with retaining piles as claimed in claim 1, characterized in that: In the construction step 4), the diameter of the positioning hole is 4 mm to 6 mm larger than the diameter of the implanted section of the embedded steel bar. After the positioning hole is completed, the dust in the positioning hole is cleaned, and then the positioning steel bar is inserted into the positioning hole. The positioning steel bar has an extension section extending outside the positioning hole, and the length of the extension section is 2 cm to 3 cm. In the construction step 5), after the waterproofing membrane is laid on the base layer, the extension section passes through the waterproofing membrane to position the waterproofing membrane on the base layer.

5. The construction method for combining basement exterior walls with retaining piles according to any one of claims 1 to 4, characterized in that: In the construction step 5), a treatment agent is applied on the base layer. After the treatment agent dries, a treatment layer covering the base layer is formed. The waterproof membrane is covered on the treatment layer and fixed to the base layer using a plurality of nails.

6. The construction method for combining basement exterior walls with retaining piles as claimed in claim 5, characterized in that: In the construction step 5), a plurality of nails are arranged at intervals along the circumference of the waterproof membrane; the waterproof membrane has overlapping portions, the overlapping portions are arranged in strips, and the overlapping portions are sealed by adhesive.

7. The construction method for combining basement exterior walls with retaining piles according to any one of claims 1 to 4, characterized in that: In the construction step 7), during the process of sealing the water stop ring, the water stop ring is inserted into the positioning hole until the glue in the positioning hole stops overflowing, and then the water stop ring is stopped. After the water stop ring is fixedly sealed at the outer end opening, glue is sprayed on the periphery of the water stop ring and the outer end opening to form an outer covering layer, which covers the water stop ring.

8. The construction method for combining basement exterior walls with retaining piles according to any one of claims 1 to 4, characterized in that: In the construction step 9), during the process of pouring concrete into the mold cavity, the concrete is poured layer by layer along the height direction of the mold cavity until the mold cavity is fully filled with concrete; each time a layer of concrete is poured into the mold cavity, a vibrating shaft is inserted into the concrete to vibrate it to make the concrete dense.

9. The construction method for combining basement exterior walls with retaining piles according to any one of claims 1 to 4, characterized in that: In the construction step 6), the central portion of the implant segment has a central disc protruding outward, the central disc is arranged around the circumference of the implant segment, and the outer periphery of the central disc abuts against the inner side wall of the positioning hole; the outer periphery of the implant segment is formed with a plurality of elastic sheets, and the plurality of elastic sheets are arranged around the circumference of the implant segment at intervals; The two ends of the elastic sheet are respectively fixedly connected to the implantation section, the middle portion of the elastic sheet protrudes outward and is connected to the outer periphery of the middle disk, a plurality of the elastic sheets enclose a bulging area, the middle disk is located in the bulging area, and adjacent elastic sheets are spaced apart from each other to connect to the outer periphery of the bulging area; In the construction step 7), after the glue is injected into the positioning hole, the glue passes through the peripheral interval and fills the bulging area, and the glue wraps the multiple elastic sheets and the implantation segment.

10. The construction method for combining basement exterior walls with retaining piles according to any one of claims 1 to 4, characterized in that: In the construction step 6), the implant segment has a hollow channel inside, the hollow channel is arranged along the axial direction of the implant segment; the outer end of the hollow channel is arranged to be closed, and the inner end of the hollow channel has an inner end opening; the outer circumference of the implant segment has a plurality of through holes, and the hollow channel is connected to the bulging area through the through holes; In the construction step 7), the inner end opening of the implantation segment is arranged toward the bottom of the positioning hole, and glue is injected from the bottom of the positioning hole. The glue enters the hollow channel through the inner end opening, fills the hollow channel, and flows to the bulging area through the multiple through holes.

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