Mounting structure for vertical post-cast strip formwork of basement exterior wall

Abstract

The basement exterior wall vertical post-cast strip formwork mounting structure comprises exterior walls and a post-cast strip between the exterior walls, steel plates are arranged between the exterior walls on the two sides of the post-cast strip, the surfaces of the steel plates are flush with the outer surfaces of the exterior walls, formworks are detachably arranged on the sides, back to the steel plates, of the exterior walls, and the formworks are used for blocking the post-cast strip. A fixing assembly is arranged between the outer wall and the formwork and used for pressing the formwork on the outer surface of the outer wall. The post-cast strip has the effects of preventing water leakage and improving the surface flatness between the post-cast strip cast concrete and the outer wall.

Description

Technical Field

[0001] The present application relates to the technical field of construction engineering, and in particular to a formwork installation structure for a vertical post-cast strip of a basement exterior wall. Background Art

[0002] Post-cast exterior wall joints are temporary construction joints created in foundation slabs, walls, beams, and other locations during construction to prevent harmful cracks caused by uneven shrinkage or settlement of cast-in-place reinforced concrete structures. These joints, known as post-cast concrete joints, are concrete strips that temporarily divide a structure into several sections. After some time has passed, concrete is poured into these joints to connect the structure as a whole.

[0003] Chinese patent publication number CN103410173A discloses a construction method for sealing the post-cast strips of the exterior walls of underground structures. The method is carried out in the following steps: precast concrete cover plates are sequentially arranged on the side of the exterior wall post-cast strips, and the gap between the upper and lower precast concrete cover plates is sealed with waterproof mortar; each precast concrete cover plate is provided with back-tensioned steel bars, which are fixedly connected to the vertical steel bars on the inside of the exterior wall post-cast strips.

[0004] During the use of the above technology, although the post-cast strip reserved on the exterior wall can be blocked, the exterior wall surface after blocking will protrude due to the precast concrete cover plate, thus affecting the overall flatness and aesthetics of the exterior wall after pouring. Utility Model Content

[0005] In order to improve the problem that after the exterior wall post-cast strip is sealed, the concrete bulge affects the flatness and beauty of the exterior wall surface, the present application provides a basement exterior wall vertical post-cast strip template installation structure.

[0006] The present application provides a basement exterior wall vertical post-casting strip formwork installation structure that adopts the following technical solution:

[0007] A basement exterior wall vertical post-cast strip template installation structure includes an exterior wall and a post-cast strip between the exterior walls, steel plates are arranged between the exterior walls on both sides of the post-cast strip, the surface of the steel plate is flush with the outer surface of the exterior wall, a template is detachably provided on the side of the exterior wall facing away from the steel plate, the template is used to seal the post-cast strip, a fixing component is provided between the exterior wall and the template, the fixing component is used to press the template against the outer surface of the exterior wall.

[0008] By adopting the above technical solution, the construction workers first embed steel plates on the outer side walls of the exterior walls on both sides of the post-cast strip, and at the same time make the outer surface of the steel plate flush with the outer surface of the exterior wall, and then fix the formwork on the exterior walls on both sides of the post-cast strip through fixing components, so that the steel plate, formwork and exterior wall form a post-cast strip casting chamber. When the concrete poured in the post-cast strip is solidified, the construction workers remove the formwork. At this time, the post-cast strip after pouring is consistent in flatness with the outer surface of the exterior wall, thereby improving the aesthetics between the post-cast strip and the exterior wall.

[0009] Optionally, the fixing assembly includes a plurality of waterstop screws arranged on the steel plate, the waterstop screws pass through the template, and the template is provided with a plurality of installation slots for the waterstop screws to pass through, the waterstop screws correspond one-to-one to the installation slots, and a steel pipe is provided on the side of the template facing away from the outer wall, both ends of the steel pipe extend to the outer wall, and a locking piece is provided between the steel pipe and the waterstop screw.

[0010] By adopting the above technical solution, the construction workers fixed multiple waterstop screws on the steel plate, and at the same time opened installation grooves on the template corresponding to the positions of the waterstop screws, put the template on the waterstop screws, and then placed the steel pipes horizontally on the outer walls on both sides of the post-cast strip. Finally, the steel pipes were fixed to the waterstop screws through locking parts. The reaction force of the waterstop screws fixed the steel plate to the outer wall.

[0011] Optionally, the locking member includes a first dovetail clip slidably mounted on the water-stop screw, the first dovetail clip is used to clamp the steel pipe, and a locking nut is threadedly connected to the water-stop screw, the locking nut is used to press the first dovetail clip onto the steel pipe.

[0012] By adopting the above technical solution, the construction workers put the first dovetail clip on the water stop screw and tighten the locking nut to press the first dovetail clip against the steel pipe, thereby fixing the template on the exterior wall.

[0013] Optionally, a plurality of anchoring steel bars are provided on the side of the steel plate facing the formwork.

[0014] By adopting the above technical solution, the strength of the structure between the steel plate and the solidified concrete in the post-cast zone is improved, and the possibility of gaps between the steel plate and the concrete is reduced.

[0015] Optionally, a screw is pre-embedded on the outer wall, and the screw passes through the template. The template is provided with a pulling groove for the screw to pass through. A second dovetail clip is provided on the sliding sleeve of the screw, and the second dovetail clip is used to clamp the steel pipe. A lock nut is threadedly connected to the screw on the side of the second dovetail clip facing away from the steel pipe.

[0016] By adopting the above technical solution, construction workers pre-embed screws when pouring the exterior wall. Construction workers fix the formwork to the exterior wall by tightening the anti-loosening nuts, thereby reducing the number of water-stop screws used in the post-pouring joint, thereby reducing the possibility of water leakage in the post-pouring joint.

[0017] Optionally, the waterstop screw and the screw are both provided with waterstop plates, a waterstop steel plate is pre-embedded on the outer wall, and a portion of the waterstop steel plate is located in the post-cast zone.

[0018] By adopting the above technical solution, the possibility of external rainwater flowing into the interior of the exterior wall through the waterstop screw or screw is reduced by the waterstop plate. At the same time, the waterstop steel plate reduces the possibility of rainwater infiltration at the junction of the exterior wall and the concrete poured in the post-pouring joint, which is beneficial to improving the waterproof performance of the exterior wall.

[0019] Optionally, a steel mesh is provided between the steel plate and the formwork, and the steel mesh is fixed to the shear wall steel bars on the exterior wall.

[0020] The adoption of the above technical solution is beneficial to improving the structural strength between the solidified concrete at the post-cast zone and the exterior wall.

[0021] Optionally, a sealing cone is threadedly connected to the water-stop screw, and the diameter of the sealing cone gradually decreases along the direction from the template to the steel plate. The sealing cone is used to seal the installation notch.

[0022] By adopting the above technical solution, after the formwork is put on the water-stop screw, the construction workers tighten the sealing cone so that the inclination of the sealing cone blocks the installation groove, thereby reducing the possibility of concrete flowing out of the installation groove during the pouring of concrete in the post-casting strip.

[0023] Optionally, a plurality of wooden squares are provided between the steel pipe and the template, and the plurality of wooden squares are arranged along the axial direction of the steel pipe. The blocking cone is located between the wooden squares and there is a distance between the blocking cone and the steel pipe.

[0024] By adopting the above technical solution, the wooden planks improve the structural strength of the formwork and reduce the possibility of deformation of the formwork during the concrete pouring process. At the same time, the wooden planks reduce the impact of the blocking cone on the steel pipe.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. Construction workers first embed steel plates on the outer side walls of the exterior walls on both sides of the post-casting strip, and make the outer surface of the steel plates flush with the outer surface of the exterior walls. Then, they fix the formwork on the exterior walls on both sides of the post-casting strip using fixing components, so that the steel plates, formwork, and exterior walls form a post-casting strip casting chamber. After the concrete poured in the post-casting strip solidifies, the construction workers remove the formwork. At this time, the post-casting strip and the outer surface of the exterior wall are consistent in flatness, thereby improving the aesthetics between the post-casting strip and the exterior wall.

[0027] 2. Construction workers fix multiple waterstop screws on the steel plate, and at the same time, open installation notches on the template corresponding to the positions of the waterstop screws. Then, they put the template on the waterstop screws, and then place the steel pipes horizontally on the outer walls on both sides of the post-cast strip. Finally, they fix the steel pipes to the waterstop screws with locking pieces. The reaction force of the waterstop screws fixes the steel plate to the outer wall.

[0028] 3. Construction workers pre-embed screws when pouring the exterior wall. They fix the formwork to the exterior wall by tightening the anti-loosening nuts, thereby reducing the number of water-stop screws used at the post-pouring joint, thereby reducing the possibility of water leakage at the post-pouring joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of an embodiment of the present application.

[0030] Figure 2 It is a cross-sectional view showing the positional relationship among the steel plate, water-stop screw and screw in the embodiment of the present application.

[0031] Figure 3 It is a cross-sectional view of the positional relationship among the steel plate, the template and the first dovetail clamp in the embodiment of the present application.

[0032] Explanation of the accompanying reference numerals: 1. Exterior wall; 2. Post-cast strip; 3. Steel plate; 4. Formwork; 5. Fixing assembly; 51. Water-stop screw; 52. Mounting notch; 53. Steel pipe; 54. Locking piece; 541. First dovetail clip; 542. Locking nut; 6. Anchor steel bar; 7. Screw; 8. Pulling notch; 9. Second dovetail clip; 10. Anti-loosening nut; 11. Water-stop plate; 12. Water-stop steel plate; 13. Steel mesh; 14. Sealing cone; 15. Wooden square. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-3 This application is described in further detail.

[0034] The embodiment of the present application discloses a basement exterior wall vertical post-casting strip formwork installation structure.

[0035] Reference Figure 1A basement exterior wall vertical post-cast strip template installation structure includes an exterior wall 1 and a post-cast strip 2 between the exterior walls 1, a waterstop steel plate 12 with a C-shaped cross-section is pre-embedded on the exterior wall 1, and the waterstop steel plate 12 is partially located in the post-cast strip 2. Steel plates 3 are pre-embedded between the exterior walls 1 on both sides of the post-cast strip 2. The steel plates 3 can be steel plates, and the surface of the steel plates 3 is flush with the outer surface of the exterior wall 1.

[0036] Reference Figure 1 、 Figure 2 and Figure 3 A template 4 is detachably arranged on the side of the exterior wall 1 facing away from the steel plate 3. The template 4 is used to seal the post-cast strip 2. A waterproof tape (not shown in the figure) is adhered to the contact position between the template 4 and the exterior wall 1. Several anchor steel bars 6 with an L-shaped cross-section are welded on the side of the steel plate 3 facing the template 4. A steel mesh 13 is arranged between the steel plate 3 and the template 4. The steel mesh 13 is welded to the shear wall steel bars on the exterior wall 1, and the anchor steel bars 6 are welded to the steel mesh 13.

[0037] Reference Figure 1 、 Figure 2 and Figure 3 A fixing assembly 5 is arranged between the exterior wall 1 and the formwork 4. The fixing assembly 5 is used to press the formwork 4 against the outer surface of the exterior wall 1. The fixing assembly 5 includes a plurality of waterstop screws 51 welded to the steel plate 3 or the anchor steel bar 6. The waterstop screws 51 pass through the formwork 4. The formwork 4 is provided with a plurality of installation slots 52 for the waterstop screws 51 to pass through. The waterstop screws 51 correspond one to one to the installation slots 52.

[0038] Reference Figure 1 、 Figure 2 and Figure 3 A sealing cone 14 is threadedly connected to the water-stop screw 51. The diameter of the sealing cone 14 gradually decreases along the direction from the template 4 to the steel plate 3. The sealing cone 14 is used to seal the installation slot 52. A steel pipe 53 is arranged on the side of the template 4 facing away from the outer wall 1. Both ends of the steel pipe 53 extend to the outer wall 1.

[0039] Reference Figure 1 、 Figure 2 and Figure 3 A plurality of wooden squares 15 are fixed on the template 4 between the steel pipe 53 and the template 4. The wooden squares 15 can be wooden columns. The plurality of wooden squares 15 are arranged along the axial direction of the steel pipe 53. The sealing cone 14 is located between the wooden squares 15 and there is a distance between the sealing cone 14 and the steel pipe 53. A locking piece 54 is arranged between the steel pipe 53 and the water-stop screw 51.

[0040] Reference Figure 1 、 Figure 2 and Figure 3The locking member 54 includes a first dovetail clip 541 that is slidably mounted on the water-stop screw 51. The cross-section of the first dovetail clip 541 is E-shaped. The first dovetail clip 541 is used to clamp the steel pipe 53. A locking nut 542 is threadedly connected to the water-stop screw 51. The locking nut 542 is used to press the first dovetail clip 541 onto the steel pipe 53.

[0041] Reference Figure 1 、 Figure 2 and Figure 3 A screw 7 is embedded in the outer wall 1, and a water stop plate 11 is welded to the water stop screw 51 and the screw 7. The screw 7 passes through the template 4, and the template 4 is provided with a pulling groove 8 for the screw 7 to pass through. A second dovetail clip 9 is provided on the sliding sleeve of the screw 7. The second dovetail clip 9 has the same structure as the first dovetail clip 541. The second dovetail clip 9 is used to clamp the steel pipe 53. A lock nut 10 is threadedly connected to the screw 7 on the side of the second dovetail clip 9 facing away from the steel pipe 53.

[0042] The construction workers first weld the steel mesh 13 to the shear wall steel bars on the outer wall 1, then place the steel plate 3 on the outer wall 1 on both sides of the post-cast strip 2, and then weld the waterstop screw 51 to the anchor steel bar 6 on the steel plate 3. Then, according to the positions of the waterstop screw 51 and the screw 7, the installation groove 52 and the tension groove 8 are opened on the formwork 4, and multiple wooden squares 15 are fixed on the formwork 4 at the same time.

[0043] The construction workers use lifting equipment to put the template 4 on the waterstop screw 51 and the screw 7, and then tighten the sealing cone 14 on the waterstop screw 51 so that the sealing cone 14 blocks the installation slot 52. At this time, the template 4 is preliminarily fixed on the exterior wall 1, and then the construction workers press the steel pipe 53 onto the wooden square 15, and at the same time insert the first dovetail clip 541 onto the waterstop screw 51 and the second dovetail clip 9 onto the screw 7.

[0044] The construction workers tighten the locking nut 542 and the anti-loosening nut 10 to press the steel pipe 53 against the wooden square 15, and then tighten the sealing cone 14 again to completely seal the installation slot 52. Finally, concrete is poured in the post-cast zone 2. When the poured concrete solidifies, the water stop sheet 11 and the water stop steel plate 12 are poured into the concrete. The construction workers remove the formwork 4 and the sealing cone 14, and then use cutting equipment to cut off the screw 7 and the water stop screw 51 extending out of the concrete, and spray waterproof material and backfill the soil.

[0045] The implementation principle of the vertical post-cast strip formwork installation structure of the basement exterior wall in an embodiment of the present application is as follows: the construction personnel first weld the steel mesh 13 to the shear wall steel bars on the exterior wall 1, and then place the steel plate 3 on the exterior wall 1 on both sides of the post-cast strip 2, and then weld the water-stop screw 51 to the anchor steel bar 6 on the steel plate 3, and then open the installation groove 52 and the tension groove 8 on the formwork 4 according to the position of the water-stop screw 51 and the screw 7, and at the same time fix multiple wooden squares 15 on the formwork 4.

[0046] The construction workers use lifting equipment to put the template 4 on the waterstop screw 51 and the screw 7, and then tighten the sealing cone 14 on the waterstop screw 51 so that the sealing cone 14 blocks the installation slot 52. At this time, the template 4 is preliminarily fixed on the exterior wall 1, and then the construction workers press the steel pipe 53 onto the wooden square 15, and at the same time insert the first dovetail clip 541 onto the waterstop screw 51 and the second dovetail clip 9 onto the screw 7.

[0047] The construction workers tighten the locking nut 542 and the anti-loosening nut 10 to press the steel pipe 53 against the wooden square 15, and then tighten the sealing cone 14 again to completely seal the installation slot 52. Finally, concrete is poured in the post-cast zone 2. When the poured concrete solidifies, the water stop sheet 11 and the water stop steel plate 12 are poured into the concrete. The construction workers remove the formwork 4 and the sealing cone 14, and then use cutting equipment to cut off the screw 7 and the water stop screw 51 extending out of the concrete, and spray waterproof material and backfill the soil.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A basement exterior wall vertical post-casting strip template installation structure, comprising an exterior wall (1) and a post-casting strip (2) between the exterior wall (1), characterized in that: A steel plate (3) is provided between the exterior walls (1) on both sides of the post-cast strip (2); the surface of the steel plate (3) is flush with the exterior surface of the exterior wall (1); a template (4) is detachably provided on the side of the exterior wall (1) facing away from the steel plate (3); the template (4) is used to seal the post-cast strip (2); a fixing assembly (5) is provided between the exterior wall (1) and the template (4); the fixing assembly (5) is used to press the template (4) onto the exterior surface of the exterior wall (1).

2. The basement exterior wall vertical post-casting strip formwork installation structure according to claim 1, characterized in that: The fixing assembly (5) includes a plurality of water-stop screws (51) arranged on the steel plate (3), the water-stop screws (51) passing through the template (4), and the template (4) is provided with a plurality of installation slots (52) for the water-stop screws (51) to pass through, the water-stop screws (51) and the installation slots (52) corresponding one to one, and a steel pipe (53) is provided on the side of the template (4) facing away from the outer wall (1), both ends of the steel pipe (53) extend to the outer wall (1), and a locking member (54) is provided between the steel pipe (53) and the water-stop screw (51).

3. The basement exterior wall vertical post-casting strip formwork installation structure according to claim 2 is characterized by: The locking member (54) includes a first dovetail clamp (541) slidably mounted on the water-stop screw (51), the first dovetail clamp (541) being used to clamp the steel pipe (53), and a locking nut (542) being threadedly connected to the water-stop screw (51), the locking nut (542) being used to press the first dovetail clamp (541) onto the steel pipe (53).

4. The basement exterior wall vertical post-casting strip formwork installation structure according to claim 1, characterized in that: A plurality of anchoring steel bars (6) are provided on the side of the steel plate (3) facing the template (4).

5. The basement exterior wall vertical post-casting strip formwork installation structure according to claim 3 is characterized by: A screw rod (7) is pre-embedded on the exterior wall (1), and the screw rod (7) passes through the template (4). The template (4) is provided with a pull groove (8) for the screw rod (7) to pass through. A second dovetail clamp (9) is provided on the sliding sleeve of the screw rod (7), and the second dovetail clamp (9) is used to clamp the steel pipe (53). A locking nut (10) is threadedly connected to the screw rod (7) on the side of the second dovetail clamp (9) facing away from the steel pipe (53).

6. The basement exterior wall vertical post-casting strip formwork installation structure according to claim 5, characterized in that: The water-stop screw (51) and the screw (7) are both provided with water-stop plates (11), a water-stop steel plate (12) is pre-buried on the outer wall (1), and a portion of the water-stop steel plate (12) is located in the post-cast zone (2).

7. The basement exterior wall vertical post-casting strip formwork installation structure according to claim 1, characterized in that: A steel mesh (13) is provided between the steel plate (3) and the template (4), and the steel mesh (13) is fixed to the shear wall reinforcement on the exterior wall (1).

8. The basement exterior wall vertical post-casting strip formwork installation structure according to claim 3, characterized in that: A sealing cone (14) is threadedly connected to the water-stop screw (51), and the diameter of the sealing cone (14) gradually decreases along the direction from the template (4) to the steel plate (3). The sealing cone (14) is used to seal the installation notch (52).

9. The basement exterior wall vertical post-casting strip formwork installation structure according to claim 8, characterized in that: A plurality of wooden squares (15) are provided between the steel pipe (53) and the template (4), and the plurality of wooden squares (15) are arranged along the axial direction of the steel pipe (53). The blocking cone (14) is located between the wooden squares (15), and a distance exists between the blocking cone (14) and the steel pipe (53).

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