Basement bottom plate construction joint post-pouring zone air bag formwork device

Abstract

The basement bottom plate construction joint post-pouring zone air bag formwork device provided by the application comprises a basement bottom plate, an air bag and an inflation mechanism for inflating the air bag, the basement bottom plate comprises, from bottom to top, a concrete cushion layer, a waterproof roll material layer, a fine stone concrete layer and two steel reinforced concrete layers, the two steel reinforced concrete layers are transversely connected together through steel bars, a post-pouring zone is formed between the two steel reinforced concrete layers, the bottom of the post-pouring zone is leveled by a yellow sand layer, the air bag is detachably arranged in the post-pouring zone, and the air bag is used for supporting the two steel reinforced concrete layers. The air bag is used instead of a formwork, the air bag can easily pass through the upper layer of steel bars in an uninflated state, is convenient to assemble and disassemble, needs to be only inflated when supporting the formwork, can be self-adaptively changed according to post-pouring zones of different sizes and shapes, and can be repeatedly used.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a gas bag formwork supporting device for basement bottom plate construction joint post-pouring belt. BACKGROUND

[0002] The post-pouring belt is a temporary construction joint arranged in a building, and the joint is poured after a period of time. That is, the original "overlength" plane is "divided into small parts", so that the shrinkage of concrete can be completed in a shorter time, and the release of constraint stress caused by excessive vertical load difference and deformation. After the post-pouring belt construction is completed, the structure is "divided into small parts", which greatly reduces the influence of the above-mentioned stress on the structure and reduces the excessive setting of permanent deformation joints. This "joint" solves the differential settlement between buildings, solves the shrinkage deformation of concrete and temperature stress deformation, and at the same time achieves the purpose of not setting permanent deformation joints.

[0003] The conventional post-pouring belt construction needs to use formwork for support. In the existing construction method, the steel reinforcement protection layer spacer is first laid on the base mold, the lower layer of steel reinforcement is then bound, the lower layer of formwork is installed above the steel reinforcement protection layer spacer, the upper layer of steel reinforcement is bound above the lower layer of formwork, and finally the upper layer of formwork is installed above the lower layer of formwork. After the concrete is poured, the upper layer of formwork, the lower layer of formwork and the steel reinforcement protection layer spacer need to be disassembled.

[0004] In the above post-pouring belt construction process, the installation process of the upper layer of formwork and the lower layer of formwork is relatively troublesome, and due to the obstruction of the upper layer of steel reinforcement, the lower layer of formwork is difficult to be taken out directly from the top, which not only is difficult to assemble and disassemble, time-consuming and laborious, but also the formwork is difficult to be reused. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the present application provides a gas bag formwork supporting device for basement bottom plate construction joint post-pouring belt, which solves the problems raised in the above background art.

[0007] (II) Technical solutions

[0008] In order to achieve the above object, the basement bottom plate construction joint post-pouring belt air bag formwork device is realized by the following technical scheme: a basement bottom plate, an air bag and an inflation mechanism for inflating the air bag, the basement bottom plate comprises, from bottom to top, a concrete cushion layer, a waterproof roll layer, a fine stone concrete layer and two steel reinforced concrete layers on both sides, the two steel reinforced concrete layers are connected together through steel bars in transverse direction, a post-pouring belt is formed between the two steel reinforced concrete layers, the bottom of the post-pouring belt is leveled by a yellow sand layer, the air bag is detachably arranged in the post-pouring belt, the air bag is used for supporting the two steel reinforced concrete layers, and the air bag is positioned and connected between the two side faces and the steel reinforced concrete layers through an anti-skid positioning mechanism.

[0009] Preferably, the anti-skid positioning mechanism comprises a plurality of positioning assemblies and a plurality of positioning holes formed in the side face of the steel reinforced concrete layer, the positioning holes are arranged at equal intervals along the length direction of the post-pouring belt, and the positioning assemblies are arranged on the inner side wall of the air bag and are connected with the positioning holes one by one.

[0010] Preferably, the positioning assembly comprises a cylinder body, a piston, a connecting rod, a rotating plate, a stud, a T-shaped sliding sleeve and a spring, the cylinder body is arranged on the side wall of the air bag, and the outlet of the cylinder body is exposed outside the air bag; the piston, the connecting rod, the rotating plate and the stud are connected in sequence, the piston is slidably fitted on the wall of the cylinder body, the rotating plate is pivotally connected with the connecting rod through a bearing, one end of the stud can be extended out of the outlet of the cylinder body and corresponds to the positioning hole, the T-shaped sliding sleeve is sleeved on the connecting rod and is fixed on the inner wall of the cylinder body, the spring is arranged between the T-shaped sliding sleeve and the piston, a spiral guide rail is formed on the inner wall of the cylinder body along the length direction of the cylinder body, a semicircular sliding block slidably fitted with the spiral guide rail is arranged on the rotating plate, and the inflation mechanism is connected with the end of the cylinder body.

[0011] Preferably, a positioning piece connected with the outlet of the cylinder body is arranged outside the air bag, the positioning piece comprises a trapezoidal convex plate, a trapezoidal groove is formed in the middle of the side of the steel reinforced concrete layer along the length direction of the steel reinforced concrete layer, the positioning hole is located at the deepest part of the trapezoidal groove, the trapezoidal convex plate is matched with the trapezoidal groove, and a through hole communicating the cylinder body and the positioning hole is formed in the trapezoidal convex plate.

[0012] Preferably, the inflation mechanism comprises an air pump, an air bag pipe, a cylinder pipe and a three-way valve, the air pump is connected with the air bag pipe and the cylinder pipe through the three-way valve, the air bag pipe is connected with the air bag, the cylinder pipe is connected with the cylinder body, and switch valves are arranged at the positions where the air bag pipe and the cylinder pipe are connected with the three-way valve.

[0013] Preferably, an air pressure gauge and a gas stop valve are arranged on the air bag.

[0014] Preferably, a handle is arranged on the side of the air bag.

[0015] Preferably, the two reinforced concrete layers are provided with concrete reinforcing pad for supporting the reinforcing steel.

[0016] (III) Beneficial Effects

[0017] The basement floor construction joint post-pouring belt air bag formwork device provided by the application has the following beneficial effects:

[0018] 1. The basement floor construction joint post-pouring belt air bag formwork device adopts an air bag to replace a formwork, the air bag can easily pass through the upper layer of reinforcing steel in an uninflated state, is convenient to assemble and disassemble, and can be repeatedly used. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic view of the air bag and the post-pouring belt of the application;

[0020] Figure 2 It is a view of the expansion connecting piece and the positioning hole of the application;

[0021] Figure 3 It is a view of the air bag support state of the application;

[0022] Figure 4 It is a semi-sectional view of the cylinder body of the application;

[0023] Figure 5 It is a sectional view of the air bag support of the application;

[0024] Figure 6 It is a schematic view of the inflation mechanism of the application.

[0025] In the figure: 1 basement floor, 2 post-pouring belt, 3 air bag, 4 trapezoidal groove, 5 positioning hole, 6 handle, 7 positioning piece, 71 trapezoidal convex plate, 72 through hole, 73 anti-skid convex point, 8 positioning assembly, 81 cylinder body, 82 piston, 83 connecting rod, 84 rotating plate, 85 stud, 86 spiral guide rail, 87 semicircular sliding block, 88 T-shaped sliding sleeve, 89 spring, 9 inflation mechanism, 91 air pump, 92 air bag pipe, 93 cylinder body pipe, 94 three-way valve, 10 reinforcing steel, 11 yellow sand layer, 12 reinforced concrete layer, 13 fine stone concrete layer, 14 waterproof roll material layer, 15 concrete cushion layer, 16 concrete reinforcing pad, 17 air pressure gauge, 18 air stop valve. DETAILED DESCRIPTION

[0026] The basement floor construction joint post-pouring belt air bag formwork device provided by the application has the following beneficial effects: Figures 1-6 As shown in the figure, it comprises a basement floor 1, an air bag 3, and an inflation mechanism 9 for inflating the air bag 3.

[0027] As shown in the figure, it comprises a basement floor 1, an air bag 3, and an inflation mechanism 9 for inflating the air bag 3. Figure 5As shown, the basement floor 1 comprises, from bottom to top, a concrete cushion layer 15, a waterproof roll layer 14, a fine stone concrete layer 13, and two reinforced concrete layers 12 on the sides. When pouring the basement floor 1, first, a 40-thick C15 concrete cushion layer 15 is poured, then a 3-thick PET waterproof roll layer 14 is dry laid on top, then a 40-thick C30 fine stone concrete layer 13 is poured, then the floor support steel bars 10 are erected, the steel bars 10 include transverse steel bars and post-pouring strip support steel bars, the transverse steel bars are supported by concrete steel bar pads 16. Finally, the reinforced concrete layer 12 is poured. The two reinforced concrete layers 12 on the sides are transversely connected together through the steel bars 10.

[0028] The post-pouring strip 2 is formed between the two reinforced concrete layers 12 on the sides, the bottom of the post-pouring strip 2 is leveled by the yellow sand layer 11, and the air bag 3 is detachably arranged in the post-pouring strip 2, the air bag 3 is placed in the gap between the upper steel bars 10 and the lower steel bars 10. The air bag 3 is used to support the two reinforced concrete layers 12 on the sides. The air bag 3 is used to replace the traditional post-pouring strip formwork.

[0029] In order to prevent the air bag 3 from being squeezed by the reinforced concrete layer 12 during the support process and causing upward displacement, an anti-skid positioning mechanism is provided, the air bag 3 is connected and positioned between the two sides and the reinforced concrete layer 12 through the anti-skid positioning mechanism. The stability of the air bag 3 during support can be effectively improved.

[0030] As shown in Figure 1 The anti-skid positioning mechanism includes a plurality of groups of expansion connectors, a positioning assembly 8, and a plurality of positioning holes 5 opened on the side surface of the reinforced concrete layer 12. After the reinforced concrete layer 12 is poured and solidified, the positioning holes 5 are arranged at equal intervals along the length direction of the post-pouring strip 2, and the expansion connectors are installed one by one in the positioning holes 5. However, due to the small gap between the air bag 3 and the reinforced concrete layer 12, it is difficult to install the components connected to the positioning holes 5 on the outer side of the air bag 3. Even if the components are installed on the outer side of the air bag 3, it is also difficult to operate the connection between the positioning assembly 8 and the expansion connectors in the narrow gap. Therefore, the positioning assembly 8 is arranged on the inner side wall of the air bag 3 and can be connected one by one with the expansion connectors in the positioning holes 5.

[0031] The expansion connector includes a carrier plate and an expansion threaded sleeve, the outer diameter of the expansion threaded sleeve is slightly larger than the inner diameter of the positioning hole 5, and the expansion threaded sleeve is made of plastic. When installed, the expansion threaded sleeve is clamped into the positioning hole 5, and the expansion threaded sleeve is used for threaded connection with the stud 85.

[0032] As shown in Figure 4As shown, the positioning assembly 8 includes a cylinder 81, a piston 82, a connecting rod 83, a rotating plate 84, a stud 85, a T-shaped sliding sleeve 88, and a spring 89. The cylinder 81 is disposed on the side wall of the airbag 3, and the outlet of the cylinder 81 protrudes outside the airbag 3. The piston 82, connecting rod 83, rotating plate 84, and stud 85 are connected in sequence. The piston 82 is slidably adapted to the wall of the cylinder 81. The rotating plate 84 is pivotally connected to the connecting rod 83 through a bearing. One end of the stud 85 can extend out of the outlet of the cylinder 81 and correspond to the positioning hole 5. The T-shaped sliding sleeve 88 is sleeved on the outside of the connecting rod 83 and fixed on the inner wall of the cylinder 81. The spring 89 is disposed between the T-shaped sliding sleeve 88 and the piston 82. A spiral guide rail 86 is provided on the inner wall of the cylinder 81 along its length direction. A semi-circular slider 87 that is slidably adapted to the spiral guide rail 86 is provided on the rotating plate 84. The inflation mechanism 9 is connected to the end of the cylinder 81.

[0033] like Figures 4-5 As shown, when the positioning component 8 is in operation, the inflation mechanism 9 inflates the cylinder 81, causing the internal piston 82 to move laterally. The piston 82, through the connecting rod 83, drives the rotating plate 84 and the stud 85 to laterally push into the expansion threaded sleeve on the positioning hole 5. At the same time, during the lateral movement, the rotating plate 84 drives the semi-circular slider 87 to slide on the spiral guide rail 86, causing the rotating plate 84 to rotate, thereby driving the stud 85 to rotate and enter the expansion threaded sleeve, making the stud 85 threadedly connected to the expansion threaded sleeve. This greatly improves the connection stability between the airbag 3 and the reinforced concrete layer 12, making the formwork stable. Moreover, the connection between the stud 85 and the expansion threaded sleeve can be achieved simply by inflating the cylinder 81 externally through the cylinder tube 93.

[0034] Due to the unstable air pressure in the airbag 3, it is difficult to precisely align the outlet of the cylinder 81 with the positioning hole 5. Therefore, a positioning element 7 connected to the outlet of the cylinder 81 is installed outside the airbag 3. The positioning element 7 includes a trapezoidal protrusion 71. A trapezoidal groove 4 is provided along the length of the middle of the side of the reinforced concrete layer 12. The positioning hole 5 is located at the deepest point of the trapezoidal groove 4. The trapezoidal protrusion 71 and the trapezoidal groove 4 are adapted to each other, and both are isosceles trapezoids. A through hole 72 is provided on the trapezoidal protrusion 71, connecting the cylinder 81 and the positioning hole 5. As the airbag 3 gradually inflates, it pushes the trapezoidal protrusion 71 along the trapezoidal groove 4 until the top of the trapezoidal protrusion 71 contacts the deepest point of the trapezoidal groove 4, thus achieving vertical positioning between the through hole 72 and the positioning hole 5.

[0035] To realize the longitudinal positioning of the through hole 72 and the positioning hole 5, the magnetic block one is symmetrically arranged on both sides of the expansion thread sleeve on the carrier plate, the magnetic block two is symmetrically arranged on both sides of the through hole 72 on the trapezoidal convex plate 71, and the corresponding opposite magnetic poles of the two magnetic blocks two and the two magnetic blocks one are opposite. And the magnetic poles of the outer side surfaces of the two magnetic blocks one are opposite, and the magnetic poles of the outer side surfaces of the two magnetic blocks two are opposite, that is, the magnetic block one on the left side of the carrier plate can only adsorb the magnetic block two on the left side of the trapezoidal convex plate 71; the magnetic block one on the right side of the carrier plate can only adsorb the magnetic block two on the right side of the trapezoidal convex plate 71. Preventing the left and right magnetic blocks one and two from being adsorbed incorrectly to cause deviation of the through hole 72 and the positioning hole 5. When the trapezoidal convex plate 71 enters the trapezoidal groove 4, the longitudinal position between the through hole 72 and the positioning hole 5 is determined by the mutual adsorption of the magnetic block one and the magnetic block two.

[0036] To increase the friction between the air bag 3 and the post-poured strip 4, the dense anti-skid convex points 73 are arranged on the surface of the trapezoidal convex plate 71 to prevent the air bag 3 from being displaced during use.

[0037] As shown in Figure 6 The inflation mechanism 9 includes a gas pump 91, an air bag pipe 92, a cylinder pipe 93 and a three-way valve 94. The gas pump 91 is connected to the air bag pipe 92 and the cylinder pipe 93 through the three-way valve 94. The air bag pipe 92 is connected to the air bag 3, and the cylinder pipe 93 is connected to the cylinder 81. The cylinder pipe 93 is connected to the wall of the air bag 3 through a sealing ring. The air bag pipe 92 and the cylinder pipe 93 are respectively provided with switch valves at the connection position of the three-way valve 94. When inflating the air bag 3, the valve on the cylinder pipe 93 is closed, and the valve on the air bag pipe 92 is opened. When inflating the cylinder 81, the valve on the air bag pipe 92 is closed, and the valve on the cylinder pipe 93 is opened.

[0038] The air bag 3 is provided with a pressure gauge 17 and a gas stop valve 18. The pressure gauge 17 is used to monitor the air pressure of the air bag 3. The gas stop valve 18 is used for rapid deflation of the air bag 3.

[0039] The air bag 3 is provided with a handle 6 on the side. By arranging the handle 6, the air bag 3 can be easily pulled out of the post-poured strip 2 after deflation.

[0040] A use method of a basement bottom plate construction joint post-poured strip air bag formwork device, the specific steps are as follows:

[0041] S1, pour 40 thick C15 concrete cushion 15 from bottom to top, lay 3 thick PET waterproof roll layer 14, pour 40 thick C30 fine stone concrete layer 13, then erect the bottom plate and the post-poured strip 2 support steel bars 10, and the post-poured strip steel bars are arranged in a trapezoidal groove shape.

[0042] S2, the air bag 3 is arranged in the space between the upper steel bar 10 and the lower steel bar 10, and the air bag 3 is fully inflated, so that the air bag 3 is supported on the post-poured strip steel bars.

[0043] S3, pouring the reinforced concrete layer 12, after the reinforced concrete layer 12 solidifies, the air bag 3 is deflated, positioning holes 5 are opened on the trapezoidal grooves 4 along the length direction at equal intervals, then the yellow sand layer 11 is laid on the bottom of the post-cast strip 2 to make the lower layer of steel bars 10 flat.

[0044] S4, the air bag 3 is inflated, after the air bag 3 is fully inflated, the trapezoidal convex plates 71 on the side wall of the air bag 3 are clamped into the trapezoidal grooves 4, so that the cylinder body 81 outlet, the through hole 72 and the positioning hole 5 are sequentially penetrated.

[0045] S5, the valve on the air bag pipe 92 is closed, the valve on the cylinder body pipe 93 is opened, the air pump 91 continues to inflate, the cylinder body 81 is filled with air, through the lateral movement of the piston 82 and the rotation of the rotating plate 84, the stud 85 is screwed into the positioning hole 5.

[0046] S6, the formwork is finished, the air in the cylinder body 81 is first extracted, the stud 85 is separated from the positioning hole 5, the air in the air bag 3 is extracted, finally the air bag 3 is folded and deformed to take out the upper layer of steel bars 10.

[0047] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A formwork support device for post-cast joints in basement floor slabs, characterized in that: The basement floor (1) comprises a concrete cushion layer (15), a waterproof layer (14), a fine stone concrete layer (13) and two reinforced concrete layers (12) arranged in sequence from bottom to top, the two reinforced concrete layers (12) are connected together through steel bars (10) in transverse direction, a post-pouring belt (2) is formed between the two reinforced concrete layers (12), the bottom of the post-pouring belt (2) is paved with a yellow sand layer (11), the air bag (3) is detachably arranged in the post-pouring belt (2), the air bag (3) is used for supporting the two reinforced concrete layers (12), the air bag (3) is connected with the two reinforced concrete layers (12) through anti-skid positioning mechanisms on both sides, the anti-skid positioning mechanisms comprise a plurality of positioning components (8) and a plurality of positioning holes (5) formed in the side of the reinforced concrete layer (12), the positioning holes (5) are arranged at equal intervals along the length direction of the post-pouring belt (2), the positioning components (8) are arranged on the inner side wall of the air bag (3) and can be connected with the positioning holes (5) one by one, the positioning component (8) comprises a cylinder body (81), a piston (82), a connecting rod (83), a rotating plate (84), a stud (85), a T-shaped sliding sleeve (88) and a spring (89), the cylinder body (81) is arranged on the side wall of the air bag (3), and the outlet of the cylinder body (81) is exposed outside the air bag (3), the piston (82), the connecting rod (83), the rotating plate (84) and the stud (85) are connected in sequence, the piston (82) is slidably fitted on the wall of the cylinder body (81), the rotating plate (84) is pivotally connected with the connecting rod (83) through a bearing, one end of the stud (85) can be extended out of the outlet of the cylinder body (81) and correspond to the positioning hole (5), the T-shaped sliding sleeve (88) is sleeved outside the connecting rod (83) and fixed on the inner wall of the cylinder body (81), the spring (89) is arranged between the T-shaped sliding sleeve (88) and the piston (82), a spiral guide rail (86) is formed on the inner wall of the cylinder body (81) along the length direction thereof, a semicircular sliding block (87) is arranged on the rotating plate (84) and slidably fitted with the spiral guide rail (86), and the inflating mechanism (9) is connected with the end of the cylinder body (81).

2. The basement floor construction joint post-cast strip air bag formwork device according to claim 1, characterized in that: A positioning piece (7) connected with the outlet of the cylinder body (81) is arranged outside the air bag (3), the positioning piece (7) comprises a trapezoidal convex plate (71), a trapezoidal groove (4) is formed in the middle of the side of the reinforced concrete layer (12) along the length direction thereof, the positioning hole (5) is located at the deepest part of the trapezoidal groove (4), the trapezoidal convex plate (71) is matched with the trapezoidal groove (4), and a through hole (72) is formed in the trapezoidal convex plate (71) and communicates with the cylinder body (81) and the positioning hole (5).

3. The basement floor construction joint post-cast strip air bag formwork device according to claim 1, characterized in that: The inflating mechanism (9) comprises a gas pump (91), a gas bag pipe (92), a cylinder pipe (93) and a three-way valve (94), the gas pump (91) is connected with the gas bag pipe (92) and the cylinder pipe (93) through the three-way valve (94), the gas bag pipe (92) is connected with the gas bag (3), the cylinder pipe (93) is connected with the cylinder (81), and switch valves are respectively arranged at the positions where the gas bag pipe (92) and the cylinder pipe (93) are connected with the three-way valve (94).

4. The basement floor construction joint post-cast strip air bag formwork device according to claim 3, characterized in that: The gas bag (3) is provided with a gas pressure gauge (17) and a gas stop valve (18).

5. The basement floor construction joint post-cast strip air bag formwork device according to claim 3, characterized in that: The side of the gas bag (3) is provided with a handle (6).

6. The basement floor construction joint post-cast strip air bag formwork device according to claim 1, characterized in that: The reinforced concrete layers (12) on both sides are provided with concrete reinforcing steel bar pads (16) for supporting the reinforcing steels (10).

Images