Construction method of inflatable side form with water stop steel plate

Abstract

The invention relates to a construction method of an inflatable side form with a water stop steel plate, which is used for construction of a post-cast strip of a cast-in-place structure and comprises the following steps: S1, constructing a cushion layer on a foundation; s2, lower-layer reinforcing bars are constructed on the cushion layer; s3, supporting and limiting structures with vertical limiting grooves in the two sides are uniformly distributed and constructed on the lower-layer reinforcing bars in the length direction of the post-cast strip; s4, first inflation hoses with one ends closed are jointly placed in the multiple vertical limiting grooves in the same side, and then the tops of the multiple vertical limiting grooves in the same side are jointly connected with a water stop steel plate body; the cast-in-place structural steel bars are laid, meanwhile, the water stop steel plate body is connected through the supporting limiting structures and the hoops, meanwhile, vertical limiting spaces of the inflation hoses are formed on the upper side and the lower side of the water stop steel plate body correspondingly, and after the inflation hoses are placed in and inflated to expand, lateral blocking can be formed; therefore, a side mold is replaced for supporting in post-cast strip construction, and the construction difficulty and complexity of the post-cast strip side mold with the water stop steel plate are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a construction method of an inflatable side form with a water-stop steel plate. Background Art

[0002] In recent years, high-rise buildings have developed rapidly, engineering structures have become increasingly complex, and cast-in-place structures have become larger in size. In order to solve the problem of concrete shrinkage and cracking, post-construction joints are often set up in the design.

[0003] However, the post-cast joint running through the structure will cause inconvenience in construction, and the dense steel bars make the support process of the side formwork complicated, difficult, and the molding effect is poor. Especially for the post-cast joint in the basement, strict requirements on the waterproof effect are required, and water stop plates need to be installed on the side formwork at the same time, which increases the difficulty and tediousness of construction. Improper handling can easily lead to cracking and leakage, and the cost of later repairs is high. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a construction method of an inflatable side form with a waterstop steel plate, so as to solve the problem that the construction of the side form with a waterstop steel plate in the prior art is complicated and difficult.

[0005] To achieve the above object, the present invention provides a construction method of an inflatable side form with a water-stop steel plate, which is used for the construction of a post-casting strip of a cast-in-place structure, comprising the following steps:

[0006] S1. Construct cushion layer on the foundation;

[0007] S2. Construct the lower layer of reinforcement on the cushion layer;

[0008] S3. Evenly distribute the support and limit structures with vertical limit grooves on both sides along the length direction of the post-cast strip on the lower reinforcement;

[0009] S4. Put a first inflatable hose with one end closed into a plurality of vertical limit grooves on the same side, and then connect the water-stop steel plate body to the top of the plurality of vertical limit grooves on the same side;

[0010] S5. Connect U-shaped clamps evenly distributed along the length direction of the post-cast strip on the water-stop steel plate body;

[0011] S6. Put a second inflatable hose with one end closed into the plurality of holding hoops;

[0012] S7. Construct the upper reinforcement above the hoop;

[0013] S8. Use an air pump to inflate air from the unsealed ends of the first and second inflation hoses into the tube to fill the vertical gaps, thereby forming a side mold as a whole.

[0014] By adopting this technical solution, after the cushion layer of the cast-in-place structure is poured, the lower layer of reinforcement is tied to the upper layer of reinforcement to form, and at the same time, the water-stop steel plate body is fixed at the designed position of the post-cast strip by the support limiting structure and the clamp, and at the same time, a first air-filled hose is arranged inside the vertical limiting groove formed by the support limiting structure, and a second air-filled hose is arranged inside the clamp. Subsequently, it is only necessary to inflate the first air-filled hose and the second air-filled hose respectively through an air pump, and the hose expands to fill the gap between the vertical steel bars to form a lateral blockage, thereby achieving the purpose of supporting as a side form, directly reducing the tediousness and difficulty of the construction of the side form with the water-stop steel plate, and after the cast-in-place structure is poured, the first air-filled hose and the second air-filled hose can be recovered between the adjacent support limiting structures by deflating, thereby realizing the recycling and reuse of the structure and eliminating the complicated process of demolding.

[0015] Further, step S3 includes:

[0016] On the lower layer of reinforcement, evenly connect the inner steel bar supports at the designed position of the post-cast strip along the length direction of the post-cast strip, and place the outer steel bar supports opposite to the two ends of the inner steel bar supports on the lower layer of reinforcement, adjust the spacing between the two outer steel bar supports to be the same as the designed width of the post-cast strip, and at the same time, the spacing between the two outer steel bar supports and the adjacent ends of the inner steel bar supports is the same, and then fix the two outer steel bar supports on the lower layer of reinforcement to cooperate with the inner steel bar support to form a support and limiting structure, and form a vertical limiting groove between the opposite ends of the outer steel bar supports and the inner steel bar supports.

[0017] By adopting this technical solution, vertical inner steel support brackets are set along the length direction of the post-cast strip to provide internal support for the side molds on both sides, and outer steel support brackets are set to provide external support for the side molds on both sides. At the same time, a vertical support structure is formed to support and connect the waterstop steel plate body, and a limited space is formed, providing the prerequisite for the subsequent placement of the first inflation hose.

[0018] Further, step S4 includes:

[0019] A first air-filled hose with one end closed and a length greater than the designed length of the post-casting strip is placed in a plurality of vertical limit grooves formed by a plurality of outer steel bar supports and inner steel bar supports on the same side;

[0020] The tops of several outer steel bar supports and inner steel bar supports on the same side are centrally connected to the waterstop steel plate body.

[0021] By adopting this technical solution, it is ensured that after the first inflation hose is inflated, it can completely block the lateral passage of concrete; and it is ensured that both ends of the water-stop steel plate body are extended to play a corresponding water-stopping role.

[0022] Further, step S5 includes:

[0023] U-shaped clamps are evenly distributed along the length of the post-cast strip in the middle of the water-stop steel plate body. By adopting this technical solution, the clamps are set in the middle of the water-stop steel plate body corresponding to the outer steel support and the inner steel support at the lower side, and the concrete surface blocked by the subsequent upper and lower inflation hoses is ensured to be a vertical surface as much as possible.

[0024] Further, step S6 includes:

[0025] A second air-filled hose with one end closed and a length greater than the designed length of the post-casting strip is placed inside the plurality of hoops.

[0026] By adopting this technical solution, it is ensured that after the second inflation hose is inflated, it can completely block the lateral passage of concrete.

[0027] Further, step S7 includes:

[0028] A steel bar fixing frame is installed outside the upper supporting and limiting structure of the lower reinforcement, steel bars are tied on the common supporting surface of the fixing frame and the clamp to form the upper reinforcement, and the upper reinforcement is fixed to the steel bar fixing frame and the clamp respectively.

[0029] By adopting this technical solution, the connection stability between the upper reinforcement and the lower reinforcement is increased, while ensuring that the upper reinforcement will not be compressed and separated from the hoop, affecting the subsequent casting and forming effect of the cast-in-place structure.

[0030] Furthermore, step S7 further includes:

[0031] A first wooden square arranged along the length direction of the post-cast strip is connected above the corresponding hoop at the top of the upper reinforcement, and at the same time, the width of the first wooden square is ensured to be greater than the inner wall spacing of the hoop.

[0032] By adopting this technical solution, a first wooden block is provided for upper limiting, and the tightness of the outer wall support of the hose located on the inner side of the clamp is increased after the second inflatable hose is inflated, thereby increasing the blocking effect.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. While laying the steel bars of the cast-in-place structure, the waterstop steel plate body is connected through the supporting limiting structure and the clamp. At the same time, vertical limiting spaces for the inflatable hose are formed on the upper and lower sides of the waterstop steel plate body. After the inflatable hose is put in and inflated, it can form a lateral barrier, thereby replacing the side formwork for supporting the construction of the post-casting strip, reducing the construction difficulty and tediousness of the side formwork of the post-casting strip with the waterstop steel plate.

[0035] 2. The vertical barrier is mainly completed by the inflatable hose in the height direction. By changing the number of vertical inflatable hoses, the height of the vertical barrier can be changed to adapt to the construction of post-casting strips of different depths, which has a good prospect of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of steps S1-S2 of the construction method of the inflatable side form with a water-stop steel plate of the present invention;

[0037] Figure 2 This is a schematic diagram of step S3 of the construction method of the inflatable side form with a water-stop steel plate of the present invention;

[0038] Figure 3 It is a schematic diagram of step S4 of the construction method of the inflatable side form with a water-stop steel plate of the present invention;

[0039] Figure 4 It is a schematic diagram of steps S5-S6 of the construction method of the inflatable side form with a water-stop steel plate of the present invention;

[0040] Figure 5 It is a schematic diagram of steps S7-S8 of the construction method of the inflatable side form with a water-stop steel plate of the present invention;

[0041] Figure 6 It is a schematic diagram of an expanded construction cross section of the construction method of the inflatable side form with a water-stop steel plate of the present invention.

[0042] Explanation of the reference numerals in the accompanying drawings: 1. cushion layer; 2. groove; 3. waterproof membrane; 4. second wooden beam; 5. outer steel support bracket; 6. inner steel support bracket; 7. first air hose; 8. water-stop steel plate body; 9. clamp; 10. second air hose; 11. first wooden beam; 12. lower layer reinforcement; 13. upper layer reinforcement. DETAILED DESCRIPTION

[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0044] Please refer to the attached Figure 1-5 The present invention provides a construction method of an inflatable side form with a water-stop steel plate, which is used for the construction of a post-cast strip of a cast-in-place structure, and includes the following steps: S1, constructing a cushion layer 1 on a foundation; S2, constructing a lower layer of reinforcement 12 on the cushion layer 1; S3, constructing a support and limiting structure with vertical limiting grooves on both sides of the lower layer of reinforcement 12 evenly along the length direction of the post-cast strip; S4, placing a first inflatable hose 7 with one end closed in a plurality of vertical limiting grooves on the same side, and then connecting a water-stop steel plate body 8 to the top of a plurality of vertical limiting grooves on the same side; S5, connecting U-shaped clamps 9 evenly along the length direction of the post-cast strip on the water-stop steel plate body 8; S6, placing a second inflatable hose 10 with one end closed in a plurality of clamps 9; S7, constructing an upper layer of reinforcement 13 above the clamp 9; S8, using an air pump to inflate the vertical gap into the tube from the unclosed ends of the first inflatable hose 7 and the second inflatable hose 10, so as to form a side form as a whole;

[0045] After the cast-in-place structure cushion layer 1 is poured, the lower reinforcement 12 and the upper reinforcement 13 are tied and formed, and the water-stop steel plate body 8 is fixed at the designed position of the post-cast strip by the support limiting structure and the clamp 9. At the same time, a first air hose 7 is arranged inside the vertical limiting groove formed by the support limiting structure, and a second air hose 10 is arranged inside the clamp 9. Subsequently, it is only necessary to inflate the first air hose 7 and the second air hose 10 respectively through an air pump. The hose expands to fill the gap between the vertical steel bars to form a lateral blockage, thereby achieving the purpose of supporting as a side form. The construction complexity and difficulty of the side form with the water-stop steel plate are directly reduced. After the cast-in-place structure is cast, the first air hose 7 and the second air hose 10 can be recovered between the adjacent support limiting structures by deflating, thereby realizing the recycling and reuse of the structure and eliminating the complicated process of demolding.

[0046] Furthermore, step S3 includes: evenly connecting inner steel bar supports 6 at the design position of the post-cast strip on the lower layer of reinforcement 12 along the length direction of the post-cast strip, and placing outer steel bar supports 5 on the lower layer of reinforcement 12 that are opposite to the two ends of the inner steel bar supports 6, adjusting the spacing between the two outer steel bar supports 5 to be the same as the design width of the post-cast strip, and at the same time, the spacing between the adjacent ends of the two outer steel bar supports 5 and the inner steel bar supports 6 is the same, and then the two outer steel bar supports 5 are fixed on the lower layer of reinforcement 12 to cooperate with the inner steel bar supports 6 to form a support and limiting structure, and a vertical limiting groove is formed between the opposite ends of the outer steel bar supports 5 and the inner steel bar supports 6; vertical inner steel bar supports 6 are set along the length direction of the post-cast strip for internal support of the side molds on both sides, and outer steel bar supports 5 are set for external support of the side molds on both sides, and at the same time, a vertical support structure is formed to support and connect the water-stop steel plate body 8, and a limiting space is formed to provide a prerequisite for the subsequent placement of the first inflation hose 7.

[0047] Furthermore, step S4 includes: placing a first air hose 7 with one end closed and a length greater than the design length of the post-cast strip into a plurality of vertical limit grooves relatively formed by a plurality of outer steel bar supports 5 and inner steel bar supports 6 on the same side, to ensure that the first air hose 7 can completely block the lateral passage of concrete after being inflated; and centrally connecting a waterstop steel plate body 8 to the top of a plurality of outer steel bar supports 5 and inner steel bar supports 6 on the same side, to ensure that both ends of the waterstop steel plate body 8 extend out to play a corresponding waterstop role.

[0048] Furthermore, step S5 includes: evenly distributing U-shaped clamps 9 along the length direction of the post-cast strip at the middle position on the waterstop steel plate body 8, and setting the clamps 9 at the middle position on the waterstop steel plate body 8 corresponding to the outer steel bar support 5 and the inner steel bar support 6 on the lower side, so as to ensure that the concrete surface blocked by the subsequent upper and lower inflation hoses is a vertical surface.

[0049] Furthermore, step S6 includes: placing a second air hose 10 with one end closed and a length greater than the designed length of the post-cast strip inside the plurality of clamps 9, to ensure that the second air hose 10 can completely block the lateral passage of concrete after being inflated.

[0050] Furthermore, step S7 includes: installing a steel bar fixing frame outside the supporting limiting structure on the lower reinforcement 12, tying steel bars on the common supporting surface of the fixing frame and the hoop 9 to form an upper reinforcement 13, and fixing the upper reinforcement 13 to the steel bar fixing frame and the hoop 9 respectively, thereby increasing the connection stability between the upper reinforcement 13 and the lower reinforcement 12, and ensuring that the upper reinforcement 13 will not be compressed and separated from the hoop 9 to affect the subsequent casting and molding effect of the cast-in-place structure.

[0051] Furthermore, step S7 also includes: connecting a first wooden beam 11 arranged along the length direction of the post-cast strip above the hoop 9 corresponding to the top of the upper reinforcement 13, while ensuring that the width of the first wooden beam 11 is greater than the inner wall spacing of the hoop 9, and setting the first wooden beam 11 for upper limiting, thereby increasing the tightness of the outer wall support of the hose located on the inner side of the hoop 9 after the second inflatable hose 10 is inflated, thereby increasing the blocking effect.

[0052] Furthermore, in order to prevent the inflation hose from rupturing due to overpressure, the pressure of the air pump used to inflate the first inflation hose 7 and the second inflation hose 10 through the unsealed ends thereof in step S8 should be no greater than 0.6 MPa.

[0053] Based on the above embodiment, please refer to the attached Figure 6 If you want to further increase the waterproof effect of the side form, you can reserve a groove 2 corresponding to the design position of the post-casting strip during the pouring construction of the cushion layer 1 in step S1. After the groove 2 is completed and formed with the cushion layer 1, a waterproof membrane 3 is laid at the bottom of the groove 2, and then two second wooden squares 4 arranged along the length direction of the post-casting strip are placed above the waterproof membrane 3. The position of the second wooden square 4 should correspond to the position of the first wooden square 11 to be constructed later, so as to cooperate with each other to limit the upper and lower ends of the inflatable hose, ensure the sealing effect of the inflatable hose after inflation, and thus ensure the waterproof effect of the side form;

[0054] Furthermore, in order to further increase the waterproof effect of the bottom of the side form, the top surface of the second wooden square 4 should be flush with or higher than the top surface of the cushion layer 1, so as to ensure that the lower reinforcement 12 can be tightly attached to the second wooden square 4, and reduce the distance between the inflation hose placed on the lower reinforcement 12 and the second wooden square 4, thereby ensuring that the inflation hose is tightly attached to the second wooden square 4 after inflation to achieve the purpose of sealing, thereby ensuring the waterproof effect of this position.

[0055] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A construction method of an inflatable side form with a water-stop steel plate, used for the construction of a post-cast strip of a cast-in-place structure, characterized in that: The steps include: S1. Construct cushion layer on the foundation; S2. Construct the lower layer of reinforcement on the cushion layer; S3. Evenly distribute the support and limit structures with vertical limit grooves on both sides along the length direction of the post-cast strip on the lower reinforcement; S4, placing a first inflatable hose with one end closed in a plurality of vertical limiting grooves on the same side, and then connecting the water-stop steel plate body to the top of the plurality of vertical limiting grooves on the side; S5. Connect U-shaped clamps evenly distributed along the length direction of the post-cast strip on the water-stop steel plate body; S6. Put a second inflatable hose with one end closed into the plurality of holding hoops; S7. Construct the upper reinforcement above the hoop; S8. Use an air pump to inflate air from the unsealed ends of the first and second inflation hoses into the tube to fill the vertical gaps, thereby forming a side mold as a whole.

2. The construction method of the inflatable side form with water-stop steel plate according to claim 1 is characterized in that: Step S3 includes: On the lower layer of reinforcement, evenly connect the inner steel bar supports at the designed position of the post-cast strip along the length direction of the post-cast strip, and place the outer steel bar supports opposite to the two ends of the inner steel bar supports on the lower layer of reinforcement, adjust the spacing between the two outer steel bar supports to be the same as the designed width of the post-cast strip, and at the same time, the spacing between the two outer steel bar supports and the adjacent ends of the inner steel bar supports is the same, and then fix the two outer steel bar supports on the lower layer of reinforcement to cooperate with the inner steel bar support to form a support and limiting structure, and form a vertical limiting groove between the opposite ends of the outer steel bar supports and the inner steel bar supports.

3. The construction method of the inflatable side form with water-stop steel plate according to claim 2 is characterized in that: Step S4 includes: A first air-filled hose with one end closed and a length greater than the designed length of the post-casting strip is placed in a plurality of vertical limit grooves formed by a plurality of outer steel bar supports and inner steel bar supports on the same side; The tops of several outer steel bar supports and inner steel bar supports on the same side are centrally connected to the waterstop steel plate body.

4. The construction method of the inflatable side form with water-stop steel plate according to claim 3 is characterized in that: Step S5 includes: U-shaped clamps are evenly connected along the length direction of the post-cast strip at the middle position of the waterstop steel plate body.

5. The construction method of the inflatable side form with water-stop steel plate according to claim 1 is characterized in that: Step S6 includes: A second air-filled hose with one end closed and a length greater than the designed length of the post-casting strip is placed inside the plurality of hoops.

6. The construction method of the inflatable side form with water-stop steel plate according to claim 1 is characterized in that: Step S7 includes: A steel bar fixing frame is installed outside the upper supporting and limiting structure of the lower reinforcement, steel bars are tied on the common supporting surface of the fixing frame and the clamp to form the upper reinforcement, and the upper reinforcement is fixed to the steel bar fixing frame and the clamp respectively.

7. The construction method of the inflatable side form with water-stop steel plate according to claim 7 is characterized in that: Step S7 also includes: A first wooden square arranged along the length direction of the post-cast strip is connected above the corresponding hoop at the top of the upper reinforcement, and at the same time, the width of the first wooden square is ensured to be greater than the inner wall spacing of the hoop.

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