Basement outer wall unilateral formwork system

Abstract

The utility model relates to the technical field of single-side formwork erecting construction, in particular to a single-side formwork erecting system for a basement outer wall. The outer side formwork is a single-side formwork, stable supporting is provided for the single-side formwork through the reinforcing component, the vertical back ridges and the steel pipe transverse rib assemblies are sequentially arranged on the outer side formwork, and the stability of the reinforcing component for supporting the single-side formwork can be improved; a circumferential arc-shaped groove is formed in the steel pipe transverse rib assembly, the double-hook-headed bolt is conveniently clamped in the arc-shaped groove, the stability of the reinforcing component for supporting the outer side formwork is further improved, and during installation, the steel pipe transverse rib assembly and the fixing frame can be firmly fixed only by rotating a nut at the rear end of the double-hook-headed bolt on the outer side of the reinforcing component; the foundation screws are connected with the foundation bolts to increase oblique tension for the lower end of the fixing frame, and long-edge oblique rods of the fixing frame provide oblique supporting force for the outer side formwork, so that the stability is further improved; the fixing frame adopts a pin joint form, so that the fixing frame is convenient to assemble and disassemble for reutilization; during construction, an operator can hold the pouring pipe on the operation platform by hand to conduct grouting in the pouring space so as to conduct outer wall pouring.

Description

Technical Field

[0001] This application relates to the technical field of single-sided formwork construction, and in particular to a single-sided formwork system for the basement exterior wall. Background Art

[0002] Urban land resources are precious, and the distance between the exterior wall of the underground project and the land use red line is relatively close. At the same time, with the development of deep foundation pit support technology, vertical support is widely used, and it is impossible to use double-sided formwork for the construction of the exterior wall of the underground project, and single-sided formwork must be used.

[0003] The utility model patent with the patent number 2015206585112 and the patent application date of August 28, 2015 discloses a single-sided formwork reinforcement structure for the retaining plate of a pile-slab combined retaining wall, which can effectively solve the problem of single-sided formwork reinforcement of the pile-slab wall. The technical solution includes a pile foundation and a formwork arranged outside the pile foundation. A pouring space for the retaining wall is formed between the pile foundation and the formwork. A pull bolt that horizontally extends outward from the formwork is fixed on the pile foundation. The outside of the pull bolt constitutes a formwork fixing structure in a tension manner through nuts. In actual use, we found that the functionality of this reinforcement structure is relatively poor. The formwork is only supported by the lateral tension of the bolt and the formwork, and the bolt is prone to looseness during long-term or high-pressure pouring, affecting the reinforcement effect. Utility Model Content

[0004] The purpose of the present utility model is to solve the problem that the above reinforcement structure is not firmly fixed, and thus provide a single-sided formwork system for the basement exterior wall.

[0005] The technical solution adopted by the present utility model to solve the above problems is:

[0006] A single-sided formwork system for the basement exterior wall includes an outer formwork. A pouring space is formed between the outer formwork and the foundation pit retaining wall for pouring the exterior wall. A plurality of vertical backing ribs are fixed on the outer formwork, and an operation platform is fixed on each vertical backing rib. A plurality of groups of steel pipe cross rib assemblies are arranged at intervals on the vertical backing ribs. A plurality of reinforcement members are arranged at intervals on the steel pipe cross rib assemblies. The bottom end of the reinforcement member abuts against the base.

[0007] The reinforcement member includes a fixed frame, a double-hook bolt, and an anchor bolt. A plurality of arc-shaped grooves are formed on each group of steel pipe cross rib assemblies. The front end of the double-hook bolt is clamped with the corresponding arc-shaped groove. The rear end of the double-hook bolt is fixed to the fixed frame. The anchor bolt is obliquely inserted at the bottom end of the fixed frame, and the lower end passes through the fixed frame and is fixedly connected to the anchor bolt embedded in the base.

[0008] The fixed frame has a right-angled trapezoidal structure, and the sides of the fixed frame are pinned together. The right-angled vertical sides of each fixed frame abut against each group of steel pipe cross rib assemblies at equal intervals and are connected to the steel pipe cross rib assemblies through double-hook bolts.

[0009] The utility model adopting the above technical solution has the following beneficial effects compared with the prior art:

[0010] The outer formwork of the utility model is a single-sided formwork, and the reinforcing member provides stable support for the single-sided formwork. The vertical backing ribs and the steel pipe cross rib assembly are sequentially arranged on the outer formwork, which can increase the stability of the reinforcing member supporting the single-sided formwork; the circumferential arc-shaped grooves are opened on the steel pipe cross rib assembly, which is convenient for the double-hook bolts to be clamped in the arc-shaped grooves, further increasing the stability of the reinforcing member supporting the outer formwork. And during installation, only the nut needs to be rotated at the rear end of the double-hook bolt outside the reinforcing member to firmly fix the steel pipe cross rib assembly to the fixed frame; the anchor screw is connected with the anchor bolt to increase the diagonal tension at the lower end of the fixed frame. The fixed frame is set as a right-angled trapezoid, so that the fixed frame can provide stable support for the single-sided formwork and further increase the stability; the fixed frame adopts a pin-connected form, which is convenient for disassembly and reuse; during construction, the operator can hold the pouring pipe on the operation platform and inject slurry into the pouring space to carry out the exterior wall pouring.

[0011] As a preference, a further technical solution of the utility model is:

[0012] The steel pipe cross rib assembly includes two steel pipe cross ribs. The arc-shaped grooves on the two steel pipe cross ribs of each group of steel pipe cross rib assemblies are vertically aligned. The front end of the double-hook bolt is two symmetrical arc-shaped hooks. The width of the arc-shaped groove is greater than the diameter of the front arc-shaped hook of the double-hook bolt. The two arc-shaped hooks of the double-hook bolt are respectively clamped in the corresponding arc-shaped grooves of the two steel pipe cross ribs of the same group. Through the above structure, the double-hook bolt is stably clamped with each group of steel pipe cross rib assemblies.

[0013] The fixing bolt is inserted on the lower edge of the fixed frame. The upper part of the fixing bolt is connected with the lower edge of the fixed frame through a nut, and the lower part of the fixing bolt extends towards the base. Through the above structure, the fixation between the fixed frame and the base is increased, which is convenient for stabilizing the position of the lower edge of the fixed frame.

[0014] The protective plate is fixed on the operation platform. The safety of the operation platform is increased through the protective plate.

[0015] The through-long installation groove is opened on the right-angled vertical edge of the fixed frame. The rear end of the double-hook bolt passes through the installation groove and is inserted with a gasket. The gasket abuts against the right-angled vertical edges on both sides of the installation groove. The rear end of the double-hook bolt is fixed with the vertical support rod through a wing nut and the gasket. Through the above structure, the rear end of the double-hook bolt is fixed with the right-angled vertical edge through the wing nut and the gasket.

[0016] At the lower right-angle position of the fixed frame, an inclined plate is fixed. The anchor bolts are vertically inserted into the inclined plate. The upper part of the anchor bolts is fixed to the inclined plate through wing nuts, and the lower part of the anchor bolts extends downward through the installation groove. Through the above structure, the anchor bolts are fixed to the inclined plate, thereby increasing the stability of the corner of the fixed frame. Description of the Drawings

[0017] Figure 1 is the rear perspective view of the embodiment of the present application;

[0018] Figure 2 is the front perspective view of the embodiment of the present application;

[0019] Figure 3 is Figure 2 the partial enlarged view of A in

[0020] Figure 4 is the side view of the embodiment of the present application;

[0021] Figure 5 is the structural schematic diagram of the double-hook bolt of the embodiment of the present application.

[0022] In the figure: 1, outer formwork; 2, vertical backing ribs; 3, operation platform; 4, long-side diagonal rod; 5, vertical support rod; 6, inclined plate; 61, anchor bolt; 62, anchor bolt; 7, third transverse support rod; 71, fixing bolt; 8, connecting nut; 9, steel pipe transverse rib; 91, arc groove; 10, double-hook bolt; 11, gasket; 12, wing nut; 13, short-side diagonal rod; 14, second transverse support rod; 15, first transverse support rod. Detailed Embodiment

[0023] The following further describes the present invention in conjunction with embodiments, and the purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0024] Referring to Figures 1-5 , the embodiment of the present application discloses a single-sided formwork system for the basement exterior wall, including an outer formwork 1. A pouring space is formed between the outer formwork 1 and the foundation pit retaining wall for pouring the exterior wall; a plurality of vertical backing ribs 2 are fixed on the outer formwork 1, an operation platform 3 is fixed on each vertical backing rib 2, and a plurality of groups of steel pipe transverse rib assemblies are arranged at intervals on the vertical backing ribs 2. A plurality of reinforcing members are arranged at intervals on each group of steel pipe transverse rib assemblies. Specifically, the reinforcing members and the vertical backing ribs 2 are arranged alternately in the horizontal and vertical directions, and the bottom ends of the reinforcing members are in contact with the foundation.

[0025] The reinforcement member includes a fixed frame, a double-hook bolt 10, and a foundation anchor rod 61. A plurality of circumferential arc-shaped grooves 91 are formed in each group of steel pipe transverse rib assemblies. The front end of the double-hook bolt 10 is clamped with the corresponding arc-shaped groove 91, the rear end of the double-hook bolt 10 is fixed to the fixed frame, and the foundation anchor rod 61 is obliquely inserted at the bottom end of the fixed frame, and the lower end passes through the fixed frame and is fixedly connected to the foundation anchor bolt 62 embedded in the base;

[0026] The fixed frame has a right trapezoidal structure, and the sides of the fixed frame are pin-connected. Specifically, the fixed frame includes a vertical support rod 5, a first horizontal support rod 15, a second horizontal support rod 14, a third horizontal support rod 7, a short-side diagonal rod 13, and a long-side diagonal rod 4. The bottom end of the vertical support rod 5 is pin-connected to the inner end of the third horizontal support rod 7, the outer end of the third horizontal support rod 7 is pin-connected to the bottom end of the long-side diagonal rod 4, and the long-side diagonal rod 4 is pin-connected to the right end of the first horizontal support rod 15; the left end of the first horizontal support rod 15 is pin-connected to the top end of the vertical support rod 5, both ends of the second horizontal support rod 14 are fixedly welded to the middle of the vertical support rod 5 and the long-side diagonal rod 4, and a short-side diagonal rod 13 is welded between the long-side diagonal rod 4 and the second horizontal support rod 14 and the third horizontal support rod 7. Each vertical support rod 5 abuts against each group of steel pipe transverse rib assemblies at equal intervals and is fixedly connected to the steel pipe transverse rib assemblies through double-hook bolts 10. Through the structure of the above fixed frame, the single-side formwork support is made more stable.

[0027] In this embodiment, the intervals between the vertical backing ribs 2, between each group of steel pipe transverse rib assemblies, and between each reinforcement member are preferably set to 300 mm - 500 mm to ensure the verticality and flatness of the cast exterior wall and avoid quality problems such as formwork bulging, leakage of mortar, and offset.

[0028] In this embodiment, the steel pipe transverse rib assembly includes two steel pipe transverse ribs 9. The arc-shaped grooves 91 on the two steel pipe transverse ribs 9 of each group of steel pipe transverse rib assemblies are vertically aligned. The front end of the double-hook bolt 10 is two symmetric arc-shaped hooks, and the diameters of the two arc-shaped hooks are both equal to the diameter of the straight rod part of the double-hook bolt 10; the width of the arc-shaped groove 91 is greater than the diameter of the front arc-shaped hook of the double-hook bolt 10, and the two arc-shaped hooks of the double-hook bolt 10 are respectively clamped in the corresponding arc-shaped grooves 91 of the two steel pipe transverse ribs 9 in the same group. Preferably, the two steel pipe transverse ribs 9 in the same group are closely welded to the vertical backing rib 2, and at this time, the straight rod part of the double-hook bolt 10 can just pass through the through hole between the two corresponding arc-shaped grooves 91. Through the above structure, the double-hook bolt 10 is stably clamped with each group of steel pipe transverse rib assemblies.

[0029] In this embodiment, a fixing bolt 71 is inserted into the third horizontal support rod 7. The upper part of the fixing bolt 71 is fixed to the third horizontal support rod 7 by a nut, and the lower part of the fixing bolt 71 extends towards the base. Through the above structure, the fixation between the third horizontal support rod 7 and the base is increased, the position of the third horizontal support rod 7 is fixed, and it is convenient to provide bottom support for the vertical support rod 5 and the long-side diagonal rod 4.

[0030] In this embodiment, a protective plate is fixed on the operation platform 3. The safety of the operation platform 3 is increased through the protective plate.

[0031] In this embodiment, a through installation groove is formed in the middle of the vertical support rod 5. The rear end of the double-hook bolt 10 passes through the installation groove and is inserted with a gasket 11. The gasket 11 abuts against the vertical support rod 5 on both sides of the installation groove. The rear end of the double-hook bolt 10 is fixed to the gasket 11 by a wing nut 12. Through the above structure, the rear end of the double-hook bolt 10 is fixed to the vertical support rod 5 by the wing nut 12 and the gasket 11.

[0032] In this embodiment, a diagonal plate 6 is fixed above the pin-joint position of the vertical support rod 5 and the third horizontal support rod 7. The anchor bolt 61 is vertically inserted into the diagonal plate 6. The upper part of the anchor bolt 61 is fixed to the diagonal plate 6 by a wing nut 12. The lower part of the anchor bolt 61 passes through the installation groove and extends downward, and is fixed to the anchor bolt 62 by a connecting nut 8. Through the above structure, the anchor bolt 61 is fixed to the diagonal plate 6, thereby increasing the stability of the corner of the fixed frame.

[0033] During the construction according to the solution of this embodiment, align the bottom surface of the outer formwork 1 with the wall edge line, and then install the vertical backing strip 2. When installing the steel pipe cross rib 9 outside the vertical backing strip 2, snap the double-hook bolt 10 into the arc-shaped groove 91 of the steel pipe cross rib 9, assemble the reinforcement members and press the vertical support rod 5 against the steel pipe cross rib 9, so that the rear end of the double-hook bolt 10 passes through the installation groove, and fasten the vertical support rod 5 and the steel pipe cross rib 9 through the gasket 11 and the wing nut 12; then insert the anchor bolt 61 into the diagonal plate 6, and connect the anchor bolt 61 and the anchor bolt 62 embedded in the base through the connecting nut 8, and fasten the anchor bolt 61 and the diagonal plate 6 through the wing nut 12 at the upper part of the anchor bolt 61; then insert the fixing bolt 71 into the third horizontal support rod 7 and insert it towards the base, and fix the upper part of the fixing bolt 71 to the third horizontal support rod 7 by a nut; finally, the operator climbs onto the operation platform through the second horizontal support rod 14, holds the grouting pipe and stands on the operation platform 3 to grout into the pouring space until the outer wall pouring is completed; after the outer wall solidifies, remove the fixing bolt 71, the anchor bolt, the wing nut 12 and the gasket 11, and the fixed frame in sequence, and reassemble and use them for the outer wall construction of the next single-sided formwork.

[0034] The outer formwork 1 of the present utility model is a single-sided formwork, and a stabilizing member provides stable support for the single-sided formwork. A vertical back rib 2 and a steel pipe transverse rib assembly are sequentially arranged on the outer formwork 1, which can increase the stability of the stabilizing member supporting the single-sided formwork; a circumferential arc-shaped groove 91 is formed on the steel pipe transverse rib assembly, which is convenient for the double-hook bolt 10 to be clamped in the arc-shaped groove 91, further increasing the stability of the stabilizing member supporting the outer formwork 1, and during installation, only the nut needs to be rotated at the rear end of the double-hook bolt 10 outside the stabilizing member to firmly fix the steel pipe transverse rib assembly to the fixed frame; the anchor screw 61 is connected to the anchor bolt 62 to increase an oblique tension at the lower end of the fixed frame, and the long-side diagonal bar 4 of the fixed frame provides an oblique supporting force for the outer formwork 1, further increasing the stability; the fixed frame is in a pin-connected form, which is convenient for disassembly and reuse; during construction, the operator can hold the pouring pipe on the operation platform 3 to inject slurry into the pouring space for exterior wall pouring.

[0035] The foregoing are only the preferred and feasible embodiments of the present utility model, and do not limit the scope of rights of the present utility model thereby. Any equivalent changes made by using the content of the specification and drawings of the present utility model are included within the scope of rights of the present utility model.

Claims

1. A single-sided formwork system for a basement exterior wall, comprising an outer formwork (1), wherein a pouring space is formed between the outer formwork (1) and the foundation pit retaining wall, and characterized in that: A plurality of vertical back ribs (2) are fixed on the outer template (1), and an operating platform (3) is fixed on each vertical back rib (2); a plurality of groups of steel pipe cross rib assemblies are arranged at intervals on the vertical back ribs (2), and a plurality of reinforcing members are arranged at intervals on the steel pipe cross rib assemblies, and the bottom ends of the reinforcing members are fixed to the base; The reinforcement member comprises a fixed frame, a double hook bolt (10) and an anchor bolt (61); each group of steel tube cross rib components is provided with a plurality of arc grooves (91); the front end of the double hook bolt (10) is clamped with the corresponding arc groove (91); the rear end of the double hook bolt (10) is connected to the fixed frame; the anchor bolt (61) is obliquely inserted into the bottom end of the fixed frame, and the lower end passes through the fixed frame and is connected to the anchor bolt (62) pre-buried in the base; The fixed frame is in a right-angled trapezoidal structure, and the sides of the fixed frame are pin-connected; the right-angled vertical sides of each fixed frame are evenly spaced against each group of steel pipe cross rib components, and are connected to the steel pipe cross rib components via double hook bolts (10).

2. The basement exterior wall single-side formwork system according to claim 1, characterized in that: The steel tube transverse rib assembly comprises two steel tube transverse ribs (9), a plurality of circumferential arc grooves (91) are formed on the steel tube transverse ribs (9), the arc grooves (91) on the two steel tube transverse ribs (9) in the same group are vertically aligned, the front end of the double hook bolt (10) is two symmetrical arc hooks, the width of the arc groove (91) is greater than the diameter of the arc hook, and the two arc hooks are respectively clamped in the corresponding arc grooves (91) of the two steel tube transverse ribs (9) in the same group.

3. The basement exterior wall single-side formwork system according to claim 1, characterized in that: A fixing bolt (71) is inserted into the lower side of the fixing frame, the upper part of the fixing bolt (71) is connected to the lower side of the fixing frame via a nut, and the lower part of the fixing bolt (71) extends toward the base.

4. The basement exterior wall single-side formwork system according to claim 1, characterized in that: A protective plate is fixed on the operating platform (3).

5. The basement exterior wall single-side formwork system according to claim 1, characterized in that: A through-length installation slot is provided on the right-angled vertical side of the fixed frame, and a gasket (11) is inserted into the rear end of the double hook bolt (10) through the installation slot, and the gasket (11) abuts against the right-angled vertical sides on both sides of the installation slot, and the rear end of the double hook bolt (10) is fixed to the right-angled vertical side via a butterfly nut (12) and the gasket (11).

6. The basement exterior wall single-side formwork system according to claim 1, characterized in that: An inclined plate (6) is fixed at a right angle to the lower portion of the fixed frame, and a ground screw (61) is vertically inserted into the inclined plate (6). The upper portion of the ground screw (61) is fixed to the inclined plate (6) via a butterfly nut (12), and the lower portion of the ground screw (61) extends downward through the mounting groove.

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