Basement outer wall post-pouring zone dismantling-free formwork system suitable for narrow operation surface

Abstract

The present application relates to the field of building construction technology, particularly relates to a basement outer wall post-cast strip formwork system without dismantling suitable for narrow operation surface, which comprises a first basement retaining wall and a second basement retaining wall, a settlement post-cast strip is arranged between the first basement retaining wall and the second basement retaining wall, and a retaining wall is further arranged outside the first basement retaining wall and the second basement retaining wall; further comprising a water-facing sealing plate arranged on the outer surface of the first basement retaining wall and the second basement retaining wall, the planar size of the water-facing sealing plate is larger than the planar size of the settlement post-cast strip, a plurality of fixed support rods are arranged on the water-facing sealing plate, and the fixed support rods are used for being connected with the steel reinforcement framework of the settlement post-cast strip part. The water-facing sealing plate is arranged to temporarily close the outer side of the settlement post-cast strip, after concrete pouring, the basement waterproofing and earthwork backfill construction can be normally carried out, and the influence of the settlement post-cast strip on the overall construction cost and construction progress of the project is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a formwork system for post-pouring strips in basement exterior walls that does not require formwork removal, suitable for use in areas with limited working space. Background Technology

[0002] With the development of architectural technology and the increasing demand for building space, high-rise and super high-rise buildings with low-rise podiums and underground parking garages are becoming increasingly common. Due to the difference in the inherent quality of the high-rise and low-rise building structures, uneven settlement can occur during construction. To prevent harmful cracks from forming in the reinforced concrete structure due to uneven settlement during construction, settlement strips are required at the junction of the high-rise and low-rise building structures, as per design or construction specifications.

[0003] The post-settlement joint must be completed after the main structure of the high-rise building is finished and the settlement has stabilized before concrete pouring can proceed. During this period, dewatering of the building's basement foundation needs to continue, increasing construction costs. Furthermore, because the post-settlement joint is not sealed, waterproofing of the basement foundation cannot be carried out, and the basement pit cannot be backfilled, severely impacting the overall project schedule.

[0004] Therefore, when settlement strips must be installed in buildings, how to reduce the impact of settlement strips on the overall construction cost and progress of the project is a technical problem that urgently needs to be solved in the existing technology. Summary of the Invention

[0005] The purpose of this invention is to address the problem of how to reduce the impact of settlement post-pouring strips on the overall construction cost and progress of buildings that must be equipped with settlement post-pouring strips in the existing technology, and to provide a formwork system for basement exterior wall post-pouring strips that does not require dismantling, suitable for narrow operating surfaces.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A post-cast strip formwork system for basement exterior walls with narrow operating surfaces, which eliminates the need for formwork removal, includes a first basement retaining wall and a second basement retaining wall. The first basement retaining wall is set in the high-rise structural area of ​​the building, and the second basement retaining wall is set in the low-rise structural area of ​​the building. A settlement post-cast strip is set between the first basement retaining wall and the second basement retaining wall. A retaining wall is also set on the outside of the first basement retaining wall and the second basement retaining wall. The retaining wall surrounds the outside of the basement raft slab to form a closed structure, and the height of the retaining wall matches the thickness of the basement raft slab.

[0008] The formwork system also includes a water-facing sealing plate, which is fitted to the outer surfaces of the first basement retaining wall and the second basement retaining wall. The planar dimensions of the water-facing sealing plate are larger than the planar dimensions of the settlement post-pouring strip. The water-facing sealing plate is provided with several fixed support rods, which are used to connect with the steel reinforcement skeleton of the settlement post-pouring strip.

[0009] Preferably, the water-facing sealing plate is a steel template.

[0010] Preferably, a plurality of bolt pre-embedded parts are provided on the first basement retaining wall, the bolt pre-embedded parts are used to fix the water-facing sealing plate, and the retaining wall corresponding to the water-facing sealing plate is provided with a slot. When uneven settlement occurs between the first basement retaining wall and the second basement retaining wall, the bottom of the water-facing sealing plate can be inserted into the slot along with the settlement displacement of the first basement retaining wall.

[0011] Preferably, the bottom surface of the slot is configured as an inclined structure, and the elevation of the bottom surface of the slot on the side near the settling strip is lower than the elevation of the bottom surface of the slot on the side away from the settling strip.

[0012] Preferably, a clamping plate is also provided at the bottom of the water-facing sealing plate. The clamping plate is connected to the water-facing sealing plate by a bolt and nut assembly. Adjusting the bolt and nut assembly can make the clamping plate fit against the water-facing sealing plate, or move the clamping plate away from the water-facing sealing plate. When the clamping plate and the water-facing sealing plate are in contact, the waterproof membrane laid on the surface of the water-facing sealing plate can be reinforced.

[0013] Preferably, the surface of the clamping plate that is in contact with the water-facing sealing plate is set as a rough surface.

[0014] Preferably, a limiting groove is also vertically provided on the retaining wall of the second basement. The length of the limiting groove matches the length of the water-facing sealing plate. The water-facing sealing plate is engaged in the limiting groove, and the water-facing sealing plate can slide along the length direction of the limiting groove.

[0015] Preferably, the end of the limiting chute near the retaining wall is also connected to an inclined chute section, which is embedded in the slot. The inclination of the bottom of the inclined chute section matches that of the bottom of the slot. The sidewall of the inclined chute section corresponding to the side of the water-facing sealing plate is inclined towards the direction of the settlement and pouring strip. The sidewall of the inclined chute section corresponding to the side of the water-facing sealing plate forms an obtuse angle greater than 90° with the bottom of the inclined chute section. During the process of the water-facing sealing plate sliding into the inclined chute section as the first basement retaining wall settles and displaces, the bottom corner of the water-facing sealing plate always abuts against the sidewall of the inclined chute section corresponding to the side of the water-facing sealing plate.

[0016] Preferably, a rubber pad layer is provided on the side wall opposite to the second basement retaining wall of the limiting slide and the inclined chute section. The rubber pad layer is used to reduce the fit gap between the water-facing sealing plate and the limiting slide and the inclined chute section.

[0017] Preferably, the bottom corner of the water-facing sealing plate corresponding to the side wall of the inclined channel section is set as a rounded corner structure.

[0018] Preferably, the water-facing sealing plate is provided with a hook.

[0019] Preferably, the fixed support rod is welded to the transverse reinforcing steel bar of the settlement-post-cast strip.

[0020] Preferably, the connection surfaces of the first basement retaining wall and the second basement retaining wall with the settlement post-cast strip are set as rough surfaces.

[0021] Preferably, a water-stop steel plate is also provided on the connection surface between the first basement retaining wall and the second basement retaining wall and the settlement post-pouring strip.

[0022] Preferably, the formwork system further includes a backwater sealing plate, which is fitted to the inner surfaces of the first basement retaining wall and the second basement retaining wall, and the backwater sealing plate and the water-facing sealing plate cooperate to form the concrete pouring cavity of the settlement post-pouring strip.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0024] 1. The present invention provides a non-removable formwork system for post-cast strips of basement exterior walls suitable for narrow operating surfaces. The water-facing sealing plate can temporarily seal the outer side of the settlement post-cast strip. Thus, after the concrete pouring of the first basement retaining wall and the second basement retaining wall, the basement waterproofing and earthwork backfilling construction can proceed normally, effectively reducing the impact of the settlement post-cast strip on the overall construction cost and progress of the project.

[0025] 2. The present invention provides a non-removable formwork system for post-cast strips in basement exterior walls suitable for narrow operating surfaces. Several bolt-embedded parts are installed on the first basement retaining wall. These bolt-embedded parts stably fix the water-facing sealing plate to the first basement retaining wall, allowing the water-facing sealing plate to settle and displace together with the first basement retaining wall. Furthermore, in this embodiment, slots are provided on the retaining wall corresponding to the water-facing sealing plate, preventing the water-facing sealing plate from being blocked by the slots below the second basement retaining wall during the settlement and displacement process with the first basement retaining wall. Through these technical means, it is ensured that after settlement occurs, the bottom area of ​​the post-cast strip is always tightly covered by the water-facing sealing plate. Moreover, since the water-facing sealing plate is fixed to the first basement retaining wall, it will not deflect during settlement, thereby ensuring the stability of the bond between the water-facing sealing plate and the waterproof membrane, effectively reducing the risk of water seepage in the basement after backfilling.

[0026] 3. The present invention provides a non-removable formwork system for post-cast strips in basement exterior walls suitable for narrow operating surfaces. A limiting groove is vertically installed on the second basement retaining wall. The length of the limiting groove matches the length of the water-facing sealing plate. The water-facing sealing plate is engaged within the limiting groove, and can slide along the length of the limiting groove. An inclined groove section is connected to one end of the limiting groove near the retaining wall. This inclined groove section is embedded in the slot, and the inclination of the bottom of the inclined groove section matches the inclination of the bottom of the slot section. The sidewall of the inclined groove section corresponds to the side of the water-facing sealing plate. The settlement-post-cast strip is inclined, and the sidewall of the inclined channel section corresponding to the side of the water-facing sealing plate forms an obtuse angle greater than 90° with the bottom of the inclined channel section. As the water-facing sealing plate slides into the inclined channel section with the settlement displacement of the first basement retaining wall, the bottom corner of the water-facing sealing plate always abuts against the sidewall of the inclined channel section corresponding to the side of the water-facing sealing plate. A rubber pad is provided on the limiting slide and the sidewall of the inclined channel section opposite to the second basement retaining wall. The rubber pad is used to reduce the fit gap between the water-facing sealing plate and the limiting slide and the inclined channel section.

[0027] The limiting groove design encloses the edge of the water-facing sealing plate within it, preventing side friction between the sealing plate and the waterproof membrane during settlement and reducing the risk of membrane damage during construction. As the water-facing sealing plate slides into the inclined groove section with the settlement displacement of the first basement retaining wall, its bottom corner remains in contact with the corresponding sidewall of the inclined groove section. Under the combined action of the inclined groove and the limiting groove, the water-facing sealing plate is compressed during downward sliding, resulting in a bulging shape away from the settlement-induced pouring strip. This allows for a tighter fit between the sealing plate and the waterproof membrane, eliminating issues like hollowing and twisting of the membrane in the sealing plate area, further reducing the risk of basement leakage. Furthermore, the bulging shape of the water-facing sealing plate also inhibits the accumulation of moisture in the soil at the settlement-induced pouring strip, further reducing the risk of basement leakage. The rubber pad layer allows the water-facing sealing plate to fit tightly against the outer surfaces of the first basement retaining wall and the second basement retaining wall. As the water-facing sealing plate slides downward, the first basement retaining wall and the second basement retaining wall can restrict the deformation of the water-facing sealing plate towards the settlement and pouring strip, ensuring that the water-facing sealing plate forms an outward bulge after being compressed, thereby improving the reliability and practicality of the invention in actual construction applications. Attached Figure Description

[0028] Figure 1 This is a front structural diagram of a post-cast strip formwork system for basement exterior walls that does not require demolding, suitable for use in confined spaces.

[0029] Figure 2 yes Figure 1 A schematic diagram of A in the middle;

[0030] Figure 3 This is a schematic diagram of the back structure of a post-cast strip formwork system for basement exterior walls that does not require demolding, suitable for use in confined spaces.

[0031] Figure 4 This is a schematic diagram of the first cross-sectional structure of the water-facing sealing plate and the inclined channel section.

[0032] Figure 5 This is a schematic diagram of the second cross-sectional structure of the water-facing sealing plate and the inclined channel section.

[0033] Figure 6 This is a schematic diagram of a backwater sealing plate for a post-cast strip system for basement exterior walls that is suitable for use in narrow working areas.

[0034] Figure 7 This is a schematic diagram of the structure of the water-facing sealing plate;

[0035] Figure 8 This is a top view structural diagram of a post-cast strip formwork system for basement exterior walls that is suitable for use in narrow working areas and does not require formwork removal.

[0036] Markings in the diagram: 1-First basement retaining wall, 2-Second basement retaining wall, 3-Settlement post-pouring strip, 4-Water-facing sealing plate, 5-Fixed strut, 6-Bolt embedded part, 7-Slot, 8-Clamping plate, 9-Limiting chute, 10-Inclined chute section, 11-Rubber pad, 12-Hook, 13-Waterstop steel plate, 14-Water-back sealing plate, 15-Retaining wall. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the accompanying drawings.

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Example 1

[0044] like Figure 1 and Figure 3 As shown, the present invention provides a basement exterior wall post-pouring strip formwork system suitable for narrow operating surfaces, comprising a first basement retaining wall 1 and a second basement retaining wall 2. The first basement retaining wall 1 is set in the high-rise structural area of ​​the building, and the second basement retaining wall 2 is set in the low-rise structural area of ​​the building. A settlement post-pouring strip 3 is provided between the first basement retaining wall 1 and the second basement retaining wall 2. A retaining wall 15 is also provided on the outside of the first basement retaining wall 1 and the second basement retaining wall 2. The retaining wall 15 surrounds the outside of the basement raft slab to form a closed structure, and the height of the retaining wall 15 matches the thickness of the basement raft slab.

[0045] The formwork system also includes a water-facing sealing plate 4, which is fitted to the outer surfaces of the first basement retaining wall 1 and the second basement retaining wall 2. The planar dimensions of the water-facing sealing plate 4 are larger than the planar dimensions of the settlement post-pouring strip 3. Several fixed support rods 5 are provided on the water-facing sealing plate 4, which are used to connect with the steel reinforcement skeleton of the settlement post-pouring strip 3.

[0046] The present invention employs a non-removable formwork system for post-cast strips in basement exterior walls suitable for narrow operating surfaces. By setting the water-facing sealing plate 4, the outer side of the settlement post-cast strip 3 can be temporarily sealed. Thus, after the concrete pouring of the first basement retaining wall 1 and the second basement retaining wall 2, the basement waterproofing and earthwork backfilling construction can proceed normally, effectively reducing the impact of the settlement post-cast strip 3 on the overall construction cost and progress of the project.

[0047] Specifically, in this embodiment, the retaining wall 15 is made of cast concrete; the fixed support rod 5 and the water-facing sealing plate 4 are integrally formed; the water-facing sealing plate 4 is welded to the steel reinforcement skeleton of the post-settlement pouring strip 3; after the water-facing sealing plate 4 is fixed, the fit width between it and the first basement retaining wall 1 is not less than 1 / 5 of the overall width of the water-facing sealing plate 4; after the water-facing sealing plate 4 is fixed, the fit width between it and the second basement retaining wall 2 is not less than 1 / 5 of the overall width of the water-facing sealing plate 4; thus, when uneven settlement occurs in the first basement retaining wall 1 and the second basement retaining wall 2, it can be ensured that the fit between the water-facing sealing plate 4 and the first basement retaining wall 1 or the second basement retaining wall 2 will not detach, thus ensuring the construction quality of the formwork system of the present invention.

[0048] As a preferred embodiment, based on the above method, the water-facing sealing plate 4 is further configured as a steel formwork. This structural design improves the structural strength of the water-facing sealing plate 4 and reduces the risk of damage due to uneven stress during the settlement of the first basement retaining wall 1 and the second basement retaining wall 2. Furthermore, in actual construction, steel formwork requires fewer auxiliary accessories, simplifies the construction process, relatively reduces the workload of construction workers, and accelerates the construction progress.

[0049] On the other hand, by setting the water-facing sealing plate 4 as a steel formwork structure, the encroachment of the water-facing sealing plate 4 on the construction space outside the basement can be reduced, allowing the invention to be applied in relatively "narrow working areas," thus improving the versatility and practicality of the invention in actual construction. In this embodiment, the water-facing sealing plate 4 is made of 15mm steel formwork.

[0050] Example 2

[0051] like Figures 1 to 5 As shown, the present invention provides a formwork system for post-cast strips of basement exterior walls that is suitable for narrow operating surfaces and requires no formwork removal. Further, based on the above method, the first basement retaining wall 1 is provided with several bolt embedded parts 6. The bolt embedded parts 6 are used to fix the water-facing sealing plate 4. The retaining wall 15 corresponding to the water-facing sealing plate 4 is provided with a slot 7. When uneven settlement occurs between the first basement retaining wall 1 and the second basement retaining wall 2, the bottom of the water-facing sealing plate 4 can be inserted into the slot 7 along with the settlement displacement of the first basement retaining wall 1.

[0052] In the above embodiments, the water-facing sealing plate 4 is fixed by connecting the fixing support rod 5 to the steel reinforcement skeleton of the settlement-post-pouring strip 3. However, in actual construction, the settlement of the first basement retaining wall 1 is usually greater than that of the second basement retaining wall 2. After settlement occurs, the steel reinforcement skeleton of the settlement-post-pouring strip 3 will tilt towards the first basement retaining wall 1. Under the influence of the steel reinforcement skeleton of the settlement-post-pouring strip 3, the fixed position of the water-facing sealing plate 4 will also deflect towards the first basement retaining wall 1, which may lead to gaps in the bottom area of ​​the settlement-post-pouring strip 3. During the backfilling process, sharp stones may puncture the waterproof membrane in the gap area, posing a risk of water seepage to the basement. Furthermore, the deflection of the water-facing sealing plate 4 will generate strong shearing force, damaging the bond between the water-facing sealing plate 4 and the waterproof membrane, further increasing the risk of basement leakage. For the reasons mentioned above, in this embodiment, several bolt embedded parts 6 are provided on the first basement retaining wall 1. The bolt embedded parts 6 can stably fix the water-facing sealing plate 4 to the first basement retaining wall 1, so that the water-facing sealing plate 4 can settle and displace together with the first basement retaining wall 1. Furthermore, in this embodiment, the slot 7 is provided on the retaining wall 15 corresponding to the water-facing sealing plate 4, to prevent the water-facing sealing plate 4 from being blocked by the retaining wall 15 during the process of settling and displacing together with the first basement retaining wall 1. Through the above technical means, it is ensured that after settlement, the bottom area of ​​the post-settlement pouring strip 3 can always be tightly covered by the water-facing sealing plate 4. Moreover, since the water-facing sealing plate 4 is fixed to the first basement retaining wall 1, the water-facing sealing plate 4 will not deflect during the settlement process, thereby ensuring the stability of the adhesion between the water-facing sealing plate 4 and the waterproof membrane, and effectively reducing the risk of water seepage in the basement after backfilling.

[0053] As a preferred embodiment, based on the above method, the bottom surface of the slot 7 is further configured as an inclined structure, and the elevation of the side of the bottom surface of the slot 7 closest to the settlement strip 3 is lower than the elevation of the side of the bottom surface of the slot 7 furthest from the settlement strip 3. This structural design prevents moisture from remaining inside the slot 7, thereby effectively reducing the risk of corrosion of the water-facing sealing plate 4 during construction.

[0054] In this embodiment, it should be noted that after the water-facing sealing plate 4 is fixed to the settlement-post-pouring strip 3 during construction, waterproof membrane will be installed on the first basement retaining wall 1, the second basement retaining wall 2, and the water-facing sealing plate 4. If the waterproof membrane is not damaged, water will generally seep into the slot 7 from the outside of the settlement-post-pouring strip 3. In this embodiment, the main consideration is that during construction inside the basement, water may enter the slot 7 from the inside of the settlement-post-pouring strip 3.

[0055] Example 3

[0056] like Figure 1 , Figure 4 and Figure 5 As shown, the present invention provides a formwork system for post-pouring strips in basement exterior walls that is suitable for narrow operating surfaces. Further, based on the above method, a clamping plate 8 is provided at the bottom of the water-facing sealing plate 4. The clamping plate 8 is connected to the water-facing sealing plate 4 via a bolt and nut assembly. Adjusting the bolt and nut assembly allows the clamping plate 8 to be in contact with the water-facing sealing plate 4, or to be moved away from the water-facing sealing plate 4. When the clamping plate 8 and the water-facing sealing plate 4 are in contact, the waterproof membrane laid on the surface of the water-facing sealing plate 4 can be reinforced.

[0057] Specifically, in this embodiment, turning the bolt and nut assembly clockwise allows the clamping plate 8 to fit against the water-facing sealing plate 4; turning the bolt and nut assembly counterclockwise allows the clamping plate 8 to move away from the water-facing sealing plate 4. In this embodiment, when the clamping plate 8 and the water-facing sealing plate 4 are in contact, the waterproof membrane laid on the surface of the water-facing sealing plate 4 can be reinforced. During the process of the water-facing sealing plate 4 settling and displacing together with the first basement retaining wall 1, the risk of the waterproof membrane separating from the water-facing sealing plate 4 is reduced, thereby ensuring the waterproof construction quality of the present invention and reducing the risk of leakage in the basement.

[0058] As a preferred embodiment, based on the above method, the surface of the clamping plate 8 that is in contact with the water-facing sealing plate 4 is further configured as a rough surface. This structural configuration increases the friction between the clamping plate 8 and the waterproof membrane, improving the reinforcement effect of the clamping plate 8 on the waterproof membrane laid on the surface of the water-facing sealing plate 4 when the clamping plate 8 and the water-facing sealing plate 4 are in contact.

[0059] As a preferred embodiment, based on the above method, a limiting groove 9 is further provided vertically on the second basement retaining wall 2. The length of the limiting groove 9 matches the length of the water-facing sealing plate 4. The water-facing sealing plate 4 is engaged in the groove of the limiting groove 9, and the water-facing sealing plate 4 can slide along the length direction of the limiting groove 9.

[0060] Specifically, in this embodiment, the limiting groove 9 is pre-embedded on the side of the second basement retaining wall 2. The limiting groove 9 can enclose the edge of the water-facing sealing plate 4 within the limiting groove 9, preventing the side of the water-facing sealing plate 4 from rubbing against the waterproof membrane during settlement, thereby reducing the risk of damage to the waterproof membrane during construction.

[0061] Example 4

[0062] like Figure 2 , Figure 4 and Figure 5 As shown, the present invention provides a basement exterior wall post-pouring strip formwork system suitable for narrow operating surfaces that does not require dismantling of the formwork. Further, based on the above method, the end of the limiting chute 9 near the retaining wall 15 is connected to an inclined chute section 10. The inclined chute section 10 is embedded in the slot 7, and the inclination of the bottom of the inclined chute section 10 matches that of the bottom of the slot 7. The sidewall of the inclined chute section 10 corresponding to the side of the water-facing sealing plate 4 is inclined towards the settlement post-pouring strip 3, and an obtuse angle greater than 90° is formed between the sidewall of the inclined chute section 10 corresponding to the side of the water-facing sealing plate 4 and the bottom of the inclined chute section 10. During the process of the water-facing sealing plate 4 sliding into the inclined chute section 10 as the first basement retaining wall 1 settles, the bottom corner of the water-facing sealing plate 4 always abuts against the sidewall of the inclined chute section 10 corresponding to the side of the water-facing sealing plate 4.

[0063] In actual construction, due to the uneven settlement between the first basement retaining wall 1 and the second basement retaining wall 2, the water-facing sealing plate 4 will move downward relative to the second basement retaining wall 2. During this process, the waterproof membrane on the water-facing sealing plate 4 is prone to adhesion problems, resulting in hollow and twisted phenomena in the waterproof membrane in the area of ​​the water-facing sealing plate 4, which affects the waterproof performance of the basement. Based on this, in this embodiment, the inclined groove section 10 is provided, and the water-facing sealing plate 4 slides into the inclined groove section 10 as the first basement retaining wall 1 settles and displaces. During this process, the bottom corner of the water-facing sealing plate 4 always abuts against the sidewall of the inclined groove section 10 corresponding to the sidewall of the water-facing sealing plate 4. Under the cooperation of the inclined groove section 10 and the limiting groove 9, the water-facing sealing plate 4 can be squeezed into an outward bulging shape away from the settlement post-pouring strip 3 during its downward sliding process. This allows the water-facing sealing plate 4 to fit more tightly with the waterproof membrane, eliminating the problems of hollowing and twisting of the waterproof membrane in the area of ​​the water-facing sealing plate 4, thereby further reducing the risk of basement leakage. Furthermore, the outward bulging shape of the water-facing sealing plate 4 can also inhibit the accumulation of moisture in the soil at the settlement post-pouring strip 3, thereby further reducing the risk of basement leakage.

[0064] As a preferred embodiment, based on the above method, a rubber pad layer 11 is further provided on the side wall opposite to the second basement retaining wall 2 of the limiting slide 9 and the inclined chute section 10. The rubber pad layer 11 is used to reduce the fitting gap between the water-facing sealing plate 4 and the limiting slide 9 and the inclined chute section 10.

[0065] In this embodiment, the rubber pad 11 allows the water-facing sealing plate 4 to fit tightly against the outer surfaces of the first basement retaining wall 1 and the second basement retaining wall 2. During the downward sliding of the water-facing sealing plate 4, the first basement retaining wall 1 and the second basement retaining wall 2 can restrict the deformation of the water-facing sealing plate 4 towards the settlement post-pouring strip 3, ensuring that the water-facing sealing plate 4 forms an outward bulge after being compressed, thereby improving the reliability and practicality of the present invention in actual construction applications.

[0066] As a preferred embodiment, based on the above method, the bottom corner of the water-facing sealing plate 4 corresponding to the side wall of the inclined channel section is further configured as a rounded corner structure.

[0067] This structural design reduces the pressure exerted by the water-facing sealing plate 4 on the side wall of the inclined channel section 10, thereby reducing the risk of damage to the inclined channel section 10 during actual construction and use.

[0068] Example 5

[0069] like Figure 7 As shown, the basement exterior wall post-pouring strip non-removable formwork frame system of the present invention, which is suitable for narrow operating surfaces, further includes a hook 12 on the water-facing sealing plate 4.

[0070] Specifically, in this embodiment, the hook 12 is a "V" shaped hook 12, which is made of scrap steel bars and is welded to the water-facing sealing plate 4.

[0071] Example 6

[0072] like Figure 3 and Figure 8 As shown, the present invention provides a formwork system for post-pouring strips in basement exterior walls that does not require formwork removal, suitable for use in confined spaces.

[0073] As a preferred embodiment, based on the above method, the fixed support rod 5 is further welded to the transverse reinforcement of the settlement-post-pouring strip 3. With this structural arrangement, when the water-facing sealing plate 4 settles and shifts with the first basement retaining wall 1, the force exerted by the fixed support rod 5 on the transverse reinforcement of the settlement-post-pouring strip 3 can cause the concrete on the sides of the first basement retaining wall 1 and / or the second basement retaining wall 2 to crack, making the concrete on the sides of the first basement retaining wall 1 and / or the second basement retaining wall 2 rougher. This allows for a better bond between the concrete of the settlement-post-pouring strip 3 and the first basement retaining wall 1 and the second basement retaining wall 2 during pouring, further reducing the risk of basement leakage.

[0074] As a preferred embodiment, based on the above method, the connection surfaces between the first basement retaining wall 1 and the second basement retaining wall 2 and the settlement strip 3 are further characterized as rough surfaces. With this structural design, the concrete of the settlement strip 3 can bond more effectively with the first basement retaining wall 1 and the second basement retaining wall 2 during pouring, thereby further reducing the risk of basement leakage.

[0075] As a preferred embodiment, based on the above method, a water-stop steel plate 13 is further provided on the connection surface between the first basement retaining wall 1 and the second basement retaining wall 2 and the settlement post-pouring strip 3.

[0076] Specifically, in this embodiment, the water-stop steel plate 13 is pre-embedded on the connection surface between the first basement retaining wall 1 and the second basement retaining wall 2 and the settlement post-pouring strip 3. The installation of the water-stop steel plate 13 further reduces the risk of basement leakage.

[0077] Example 7

[0078] like Figure 6 and Figure 8 As shown, the present invention provides a formwork system for basement exterior wall post-pouring strips that does not require demolition, suitable for narrow operating surfaces. In addition to the above-mentioned method, the formwork system further includes a backwater sealing plate 14. The backwater sealing plate 14 is fitted to the inner surfaces of the first basement retaining wall 1 and the second basement retaining wall 2. The backwater sealing plate 14 and the water-facing sealing plate 4 cooperate to form the concrete pouring cavity of the settlement post-pouring strip 3.

[0079] The above description is merely 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 within the protection scope of the present invention.

Claims

1. A formwork system for post-cast strips in basement exterior walls that requires no formwork removal, suitable for use in confined spaces, characterized in that: It includes a first basement retaining wall and a second basement retaining wall. The first basement retaining wall is set in the high-rise structural area of ​​the building, and the second basement retaining wall is set in the low-rise structural area of ​​the building. A settlement post-pouring strip is set between the first basement retaining wall and the second basement retaining wall. A retaining wall is also set on the outside of the first basement retaining wall and the second basement retaining wall. The retaining wall surrounds the outside of the basement raft slab to form a closed structure. The height of the retaining wall matches the thickness of the basement raft slab. The formwork system also includes a water-facing sealing plate, which is fitted to the outer surfaces of the first basement retaining wall and the second basement retaining wall. The planar dimensions of the water-facing sealing plate are larger than the planar dimensions of the settlement post-pouring strip. The water-facing sealing plate is provided with several fixed support rods, which are used to connect with the steel reinforcement skeleton of the settlement post-pouring strip. The first basement retaining wall is provided with several bolt embedded parts, which are used to fix the water-facing sealing plate. The retaining wall corresponding to the water-facing sealing plate is provided with a slot. When uneven settlement occurs between the first basement retaining wall and the second basement retaining wall, the bottom of the water-facing sealing plate can be inserted into the slot along with the settlement displacement of the first basement retaining wall.

2. The formwork system for post-cast strips in basement exterior walls that requires no formwork removal, as described in claim 1, is characterized in that... The water-facing sealing plate is made of steel formwork.

3. The formwork system for post-cast strips in basement exterior walls that requires no formwork removal, as described in claim 2, is characterized in that... The bottom surface of the slot is set with an inclined structure, and the elevation of the bottom surface of the slot on the side near the settlement strip is lower than the elevation of the bottom surface of the slot away from the settlement strip.

4. The basement exterior wall post-pouring strip formwork system without formwork removal suitable for narrow operating surfaces as described in claim 3, characterized in that, The bottom of the water-facing sealing plate is also provided with a clamping plate. The clamping plate is connected to the water-facing sealing plate by a bolt and nut assembly. Adjusting the bolt and nut assembly can make the clamping plate fit against the water-facing sealing plate, or move the clamping plate away from the water-facing sealing plate. When the clamping plate and the water-facing sealing plate are in contact, the waterproof membrane laid on the surface of the water-facing sealing plate can be reinforced. The surface of the clamping plate that is in contact with the water-facing sealing plate is set as a rough surface.

5. The formwork system for post-cast strips in basement exterior walls that requires no formwork removal, as described in claim 4, is characterized in that... The retaining wall of the second basement is also vertically provided with a limiting groove. The length of the limiting groove matches the length of the water-facing sealing plate. The water-facing sealing plate is engaged in the limiting groove, and the water-facing sealing plate can slide along the length direction of the limiting groove. The limiting chute is connected to an inclined chute section at one end near the retaining wall. The inclined chute section is embedded in the slot, and the inclination of the bottom of the inclined chute section matches that of the bottom of the slot section. The sidewall of the inclined chute section corresponding to the side of the water-facing sealing plate is inclined towards the direction of the settlement and pouring strip. The sidewall of the inclined chute section corresponding to the side of the water-facing sealing plate forms an obtuse angle greater than 90° with the bottom of the inclined chute section. As the water-facing sealing plate slides into the inclined chute section with the settlement displacement of the first basement retaining wall, the bottom corner of the water-facing sealing plate always abuts against the sidewall of the inclined chute section corresponding to the side of the water-facing sealing plate. A rubber pad is provided on the side wall opposite to the second basement retaining wall of the limiting slide and the inclined chute section. The rubber pad is used to reduce the fit gap between the water-facing sealing plate and the limiting slide and the inclined chute section.

6. The formwork system for post-cast strips of basement exterior walls without formwork removal, suitable for narrow operating surfaces, as described in claim 5, is characterized in that... The bottom corner of the water-facing sealing plate corresponding to the side wall of the inclined channel section is set with a rounded corner structure.

7. The formwork system for post-cast strips in basement exterior walls that requires no formwork removal, as described in claim 1, is characterized in that... The water-facing sealing plate is equipped with a hook.

8. The basement exterior wall post-pouring strip formwork system for narrow operating surfaces without formwork removal as described in claim 1, characterized in that, The fixed support rod is welded to the transverse reinforcement of the settlement post-pouring strip; the connection surfaces of the first basement retaining wall and the second basement retaining wall with the settlement post-pouring strip are set as rough surfaces.

9. The formwork system for post-cast strips of basement exterior walls without formwork removal for use in confined working areas, as described in any one of claims 1-8, is characterized in that... The formwork system also includes a backwater sealing plate, which is fitted to the inner surfaces of the first basement retaining wall and the second basement retaining wall. The backwater sealing plate and the water-facing sealing plate work together to form the concrete pouring cavity of the settlement post-pouring strip.

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