Underground diaphragm wall steel edge waterstop air bag separation joint template

Abstract

The utility model relates to the field of underground diaphragm wall construction, in particular to an underground diaphragm wall steel edge waterstop air bag separation joint template, which comprises a steel box and two air bags, the air bags are strip-shaped, at least one end of each air bag is provided with an inflation and deflation valve, and the two air bags are respectively fixed on two sides of the steel box. The utility model has the beneficial effects that the underground diaphragm wall joint template can be quickly disassembled, the damage to early construction concrete and the template is reduced, and the construction efficiency is improved; a hydraulic system is omitted, and complex operation and maintenance processes are omitted; and a hydraulic system is not adopted, so that the cost is greatly saved, and greater economic benefits are generated.

Description

Technical Field

[0001] The utility model relates to the field of underground continuous wall construction, in particular to an airbag separation joint template for a steel edge water stop belt of an underground continuous wall. Background Art

[0002] With the advancement of underground continuous wall construction technology, underground continuous wall rubber waterstop joints have been successfully applied in various places. The principle is to form a horizontal fold line through the joint template and concrete, combined with the vertical rubber waterstop. Compared with the traditional lock joint, it not only increases the groundwater bypass path, but also saves the cost compared with the I-beam joint and the cross steel plate joint. However, in the process of pulling out the underground continuous wall rubber waterstop joint template, due to factors such as pressure deformation and concrete bonding, there are still certain difficulties, which leads to deformation and damage of the underground continuous wall rubber waterstop joint template.

[0003] The two existing underground continuous wall rubber water stop joint template solutions are as follows:

[0004] 1. Patent CN202210163640.9-Self-pushing joint box for rubber steel plate waterstop, records: Since the joint box is not taken out during the grooving construction of adjacent groove sections, the bonding force between the joint box and the cast wall is large, and the resistance is large when it is taken out later, and the waterstop is easily damaged. Li Yaoliang and others invented a self-pushing joint box for rubber steel plate waterstop, which is demoulded by hydraulic jacking.

[0005] 2. In view of the small contact area between the jack and concrete used in the existing joint box lateral hydraulic stripping, there is a possibility of sinking into the previous underground continuous wall in actual practice. Yang Zisong et al. improved the disassembly survival rate of the joint box by increasing the lateral hydraulic push plate at Chengbei Road Station on the L section of the Jiamin Line of Shanghai Urban Railway (Joint Box Design and Application of Rubber Joints for Ultra-deep Underground Continuous Walls "Construction" 2023, 45(8): 1532-1535).

[0006] At present, the joint formwork in the industry is usually demoulded by hydraulic jacking, which has the disadvantages of heavy weight of underground continuous wall joint formwork, complex operation of hydraulic system, high frequency of maintenance and repair of hydraulic system, and high cost. Utility Model Content

[0007] The technical problem to be solved by the utility model is how to facilitate the demoulding of the joint template.

[0008] The utility model provides a technical solution to the above-mentioned technical problems as follows: an underground continuous wall steel edge water stop airbag separation joint template, comprising a steel box and two airbags, the airbags are strip-shaped, at least one end of the airbags has an inflation and deflation valve, and the two airbags are respectively fixed on both sides of the steel box.

[0009] The beneficial effects of the utility model are as follows: the cavity is reduced after the air bag is deflated through the air charging and discharging valve, thereby not affecting the wall pouring; a cavity is formed after the air bag is inflated through the air charging and discharging valve, pushing the steel box to separate from the poured concrete; the freedom of the template of the air bag separation joint of the steel edge water stop belt of the underground continuous wall is increased, and the steel box can be quickly separated from the concrete surface and the soil contact surface, thereby realizing rapid demolding.

[0010] The underground continuous wall steel edge water stop air bag separation joint formwork of this scheme, first, can quickly dismantle the underground continuous wall joint formwork, reduce the damage to the previous construction concrete and the formwork itself, and improve construction efficiency; second, reduce the hydraulic system, eliminating the complicated operation and maintenance process; third, do not use the hydraulic system, greatly save costs, and generate greater economic benefits.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, at least one end of the airbag has an air pressure monitoring hole.

[0013] The beneficial effect of adopting the above further solution is that by installing an air pressure detection sensor at the air pressure monitoring hole, the air pressure in the airbag can be monitored in real time.

[0014] Furthermore, the same end of the two airbags is provided with the inflation and deflation valve.

[0015] The beneficial effect of adopting the above further solution is that the inflation and deflation valves of the two airbags are arranged at the same end, so that the two airbags can be inflated or deflated at the same time.

[0016] Furthermore, the material of the airbag is rubber.

[0017] Furthermore, the steel box includes a base plate and two inclined plates, the two inclined plates are arranged at intervals, one end of the two inclined plates are fixedly connected to the base plate, the other ends of the two inclined plates are close to each other, and a waterstop installation gap is formed between the two, and the two airbags are respectively fixed on the opposite sides of the two inclined plates.

[0018] The beneficial effect of adopting the above further solution is that the waterstop installation notch is used to position the waterstop.

[0019] Furthermore, the steel box also includes two extension plates, which are arranged one by one with the two inclined plates. The extension plates are fixedly connected to the other ends of the corresponding inclined plates and are located on the side facing the two inclined plates. The extension plates are arranged parallel to the base plate.

[0020] Furthermore, the steel box also includes a transverse rib plate, which is located between the two inclined plates, and two ends of the transverse rib plate are respectively fixedly connected to the two inclined plates.

[0021] The beneficial effect of adopting the above further solution is that the transverse ribs support the two inclined plates, thereby ensuring the supporting strength of the inclined plates.

[0022] Furthermore, the steel box also includes a longitudinal rib plate, which is located between the transverse rib plate and the base plate, and two ends of the longitudinal rib plate are fixedly connected to the transverse rib plate and the base plate respectively.

[0023] The beneficial effect of adopting the above further solution is that the longitudinal ribs support the transverse ribs and the base plate, thereby increasing the strength of the steel box.

[0024] Furthermore, a lifting lug is fixed to at least one end of the steel box.

[0025] The beneficial effect of adopting the above further solution is that: a lifting lug is installed at the end of the steel box to facilitate lifting out the joint template as a whole after the construction is completed.

[0026] Furthermore, two lifting ears are fixed to one end of the steel box. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional diagram of the airbag separation joint template of the steel edge water stop belt of the underground continuous wall of the utility model;

[0028] Figure 2 It is a three-dimensional diagram of the steel box of the utility model;

[0029] Figure 3 This is a schematic diagram of the airbag separation joint template of the steel side waterstop of the underground continuous wall being separated from the poured concrete and waterstop.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Steel box; 11. Base plate; 12. Inclined plate; 13. Horizontal rib plate; 14. Longitudinal rib plate; 2. Air bag; 3. Air pressure monitoring hole; 4. Air charging and discharging valve; 5. Lifting ear; 6. Water stop installation gap. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] like Figure 1-Figure 3 As shown, this embodiment provides an underground continuous wall steel edge waterstop airbag separation joint template, including a steel box 1 and two airbags 2, the airbags 2 are strip-shaped, at least one end of the airbags 2 has an inflation and deflation valve 4, and the two airbags 2 are respectively fixed on both sides of the steel box 1.

[0034] The cavity is reduced after the air bag 2 is deflated through the air charging and discharging valve 4, thereby not affecting the wall pouring; a cavity is formed by inflating the air bag 2 through the air charging and discharging valve 4, pushing the steel box 1 to separate from the poured concrete; the freedom of the template of the air bag separation joint of the steel edge water stop belt of the underground continuous wall is increased, so that the steel box 1 can be quickly separated from the concrete surface and the soil contact surface, thereby realizing rapid demolding.

[0035] The underground continuous wall steel edge water stop air bag separation joint formwork of this scheme, first, can quickly dismantle the underground continuous wall joint formwork, reduce the damage to the previous construction concrete and the formwork itself, and improve construction efficiency; second, reduce the hydraulic system, eliminating the complicated operation and maintenance process; third, do not use the hydraulic system, greatly save costs, and generate greater economic benefits.

[0036] Specifically, the side of the airbag 2 fixed to the steel box 1 is in the shape of the side wall of the steel box 1. After the airbag 2 is filled with air, the side away from the steel box 1 is as follows: Figure 3 The curved surface shown, or the flat surface.

[0037] Optionally, the steel box 1 is formed in one piece, or is formed by welding a plurality of steel plates.

[0038] On the basis of the above technical solution, at least one end of the airbag 2 has an air pressure monitoring hole 3 .

[0039] By installing an air pressure detection sensor at the air pressure monitoring hole 3, the air pressure in the airbag 2 can be monitored in real time.

[0040] Specifically, a valve may be provided at the air pressure monitoring hole 3 to close the air pressure monitoring hole 3 when the air pressure is not being monitored.

[0041] On the basis of the above technical solution, the same end of the two airbags 2 is provided with the inflation and deflation valve 4 .

[0042] The inflation and deflation valves 4 of the two airbags 2 are arranged at the same end, so as to facilitate the inflation or deflation of the two airbags 2 at the same time.

[0043] Specifically, Figure 1 As shown, one end of each airbag 2 is provided with an air pressure monitoring hole 3 and an air filling and discharging valve 4.

[0044] On the basis of the above technical solution, the material of the airbag 2 is rubber.

[0045] On the basis of the above technical solution, the steel box 1 includes a base plate 11 and two inclined plates 12. The two inclined plates 12 are arranged at intervals, one end of the two inclined plates 12 is fixedly connected to the base plate 11, and the other ends of the two inclined plates 12 are close to each other and a waterstop installation notch 6 is formed therebetween. The two airbags 2 are respectively fixed on the opposite sides of the two inclined plates 12.

[0046] The waterstop installation notch 6 is used to position the waterstop.

[0047] On the basis of the above technical solution, the steel box 1 also includes two extension plates, which are arranged one by one with the two inclined plates 12. The extension plates are fixedly connected to the other ends of the corresponding inclined plates 12 and are located on the side facing the two inclined plates 12. The extension plates are arranged parallel to the base plate 11.

[0048] Specifically, Figure 1 and Figure 2 As shown, the base plate 11, two inclined plates 12 and two extension plates of the steel box 1 constitute a sheet metal structure with a cross section similar to a trapezoid.

[0049] On the basis of the above technical solution, the steel box 1 further includes a transverse rib 13 , which is located between the two inclined plates 12 , and two ends of the transverse rib 13 are fixedly connected to the two inclined plates 12 .

[0050] The transverse ribs 13 support the two inclined plates 12 to ensure the supporting strength of the inclined plates 12 .

[0051] On the basis of the above technical solution, the steel box 1 further includes a longitudinal rib plate 14, which is located between the transverse rib plate 13 and the base plate 11, and the two ends of the longitudinal rib plate 14 are fixedly connected to the transverse rib plate 13 and the base plate 11 respectively.

[0052] The longitudinal ribs 14 support the transverse ribs 13 and the base plate 11 to increase the strength of the steel box 1 .

[0053] Specifically, Figure 2 As shown, the longitudinal rib 14 is connected to the middle of the transverse rib 13 , and the two inclined plates 12 are symmetrically arranged on both sides of the longitudinal rib 14 .

[0054] On the basis of the above technical solution, a lifting lug 5 is fixed to at least one end of the steel box 1 .

[0055] A lifting lug 5 is installed at the end of the steel box 1 to facilitate lifting the joint template as a whole after the construction is completed.

[0056] On the basis of the above technical solution, two lifting ears 5 are fixed to one end of the steel box 1 .

[0057] Specifically, the two lifting ears 5 are fixedly connected to the transverse rib 13 and the base plate 11 respectively.

[0058] Furthermore, the number of lifting ears 5 is at least three, and at least three lifting ears 5 are spaced apart at the end of the steel box 1 .

[0059] The use method of the airbag separation joint template of the underground continuous wall steel edge water stop belt of this embodiment is as follows:

[0060] Before construction, the airbag 2 is deflated through the inflation and deflation valve 4, and then the steel box 1 with the airbag 2 is placed in the construction location. The concrete of the underground continuous wall is poured on the side of the steel box 1 with the airbag 2. When removing the mold, Figure 3 As shown, air is first inflated into the airbag 2 through the inflation and deflation valve 4 to form a cavity, and the airbag 2 pushes the steel box 1 to separate from the poured concrete, the water stop belt remains in the concrete, and the steel box 1 is lifted out through the lifting lug 5.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0062] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An underground continuous wall steel edge water stop airbag separation joint template, characterized in that: It comprises a steel box (1) and two air bags (2), wherein the air bags (2) are strip-shaped, at least one end of the air bags (2) is provided with an air filling and discharging valve (4), and the two air bags (2) are respectively fixed on two sides of the steel box (1).

2. The airbag separation joint template of the steel edge water stop strip of underground continuous wall according to claim 1 is characterized in that: At least one end of the air bag (2) is provided with an air pressure monitoring hole (3).

3. The airbag separation joint template of the steel edge water stop strip of underground continuous wall according to claim 1 is characterized in that: The same end of the two air bags (2) is provided with the inflation and deflation valve (4).

4. The airbag separation joint template of the steel edge water stop strip of underground continuous wall according to claim 1 is characterized in that: The material of the airbag (2) is rubber.

5. The airbag separation joint template of the steel edge water stop strip of underground continuous wall according to claim 1 is characterized in that: The steel box (1) comprises a base plate (11) and two inclined plates (12), the two inclined plates (12) are spaced apart, one end of the two inclined plates (12) is fixedly connected to the base plate (11), the other ends of the two inclined plates (12) are close to each other, and a water stop installation notch (6) is formed between the two ends, and the two air bags (2) are respectively fixed on the opposite sides of the two inclined plates (12).

6. The airbag separation joint template of the steel edge water stop strip of underground continuous wall according to claim 5 is characterized in that: The steel box (1) further comprises two extension plates, the two extension plates being arranged in one-to-one correspondence with the two inclined plates (12), the extension plates being fixedly connected to the other ends of the corresponding inclined plates (12) and being located on the side facing the two inclined plates (12), and the extension plates being arranged parallel to the base plate (11).

7. The airbag separation joint template of the steel edge water stop strip of underground continuous wall according to claim 5 is characterized in that: The steel box (1) further comprises a transverse rib plate (13), wherein the transverse rib plate (13) is located between the two inclined plates (12), and the two ends of the transverse rib plate (13) are respectively fixedly connected to the two inclined plates (12).

8. The airbag separation joint template of the steel edge water stop strip of underground continuous wall according to claim 7 is characterized in that: The steel box (1) further comprises a longitudinal rib plate (14), wherein the longitudinal rib plate (14) is located between the transverse rib plate (13) and the base plate (11), and the two ends of the longitudinal rib plate (14) are respectively fixedly connected to the transverse rib plate (13) and the base plate (11).

9. The airbag separation joint template of the steel edge water stop strip of underground continuous wall according to any one of claims 1 to 8, characterized in that: A lifting lug (5) is fixed to at least one end of the steel box (1).

10. The airbag separation joint template of the steel edge water stop strip of underground continuous wall according to claim 9 is characterized in that: Two lifting ears (5) are fixed to one end of the steel box (1).

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