Concrete supporting device for secant piles

Abstract

The utility model relates to a concrete supporting device for a secant pile, which comprises a mould body, which is positioned at a secant position of a plain concrete pile and a reinforced concrete pile, is fixedly arranged on a protective cylinder of the plain concrete pile and is suitable for supporting concrete of the plain concrete pile; the mould body comprises an air bag and a reinforcer, the reinforcer is fixedly installed on one side of the air bag and is close to the reinforced concrete pile, and the air bag is close to the plain concrete pile. According to the concrete supporting device, the clamping fixture body is arranged at the meshing position of the plain concrete pile and the reinforced concrete pile, the shape of the clamping fixture body corresponds to the shape of the meshing position, the clamping fixture body is fixedly installed on the inner side of the pile casing before the plain concrete pile is poured, and after concrete is poured and certain strength is achieved, the clamping fixture body is dismantled, so that a gap is reserved at the meshing position; and the device is convenient and rapid to use, high in construction efficiency and high in speed, and the risk of leakage of the secant pile maintenance structure is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of occlusal pile construction, in particular to a concrete supporting device for occlusal piles. Background Art

[0002] The bored interlocking pile construction technology is a commonly used retaining structure for foundation pits. It is usually divided into plain concrete piles and reinforced concrete piles. The two are set alternately, and the construction sequence is fixed. The plain concrete piles on both sides need to be constructed first, and then the reinforced concrete piles in the middle. The control of concrete cutting time and interlocking quality during construction are the difficulties of the interlocking pile process. At present, there are mainly the following methods for dealing with interlocking:

[0003] 1. Use super-slow-setting concrete and soft cutting technology. This method prolongs the setting time of concrete and constructs reinforced concrete piles before the concrete has fully hardened. This method has safety and quality risks and requires precise control of the initial setting time of concrete. If the reinforced concrete piles are drilled too early, the poured pile concrete will flow into the new pile hole. If the reinforced concrete piles are drilled too late, the poured concrete piles will have a certain strength, making cutting difficult and construction difficult.

[0004] 2. Use hard cutting technology. After the plain concrete piles are completed and have a certain strength, use a full-rotation casing drill to drill holes, and then construct reinforced concrete piles. This method is slow to construct, has high costs, and has high site requirements.

[0005] 3. Use the lock-mouth pipe process. This method takes a long time to place adjacent piles after drilling, and construction workers are prone to stepping on empty space. The safety factor is low, and it is difficult to pull out the lock-mouth pipe after the construction is completed. The vibration generated during the process can easily affect the pile body, resulting in poor construction quality.

[0006] To this end, we propose a concrete supporting device for bite piles to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a concrete support device for bite piles which has a simple structure and is easy to use.

[0008] In order to solve the above problems, the technical solution of the utility model is:

[0009] A concrete support device for a snap pile, comprising:

[0010] The fixture body is located at the engaging position between the plain concrete pile and the reinforced concrete pile. The fixture body is fixedly mounted on the casing of the plain concrete pile and is suitable for supporting the concrete of the plain concrete pile.

[0011] The mold body includes an airbag and a reinforcement piece. The reinforcement piece is fixedly installed on one side of the airbag. The reinforcement piece is close to the reinforced concrete pile, and the airbag is close to the plain concrete pile.

[0012] In a further embodiment, the shape of the mold body corresponds to the shape of the bite location.

[0013] In a further embodiment, the reinforcement is a curved plate-like structure.

[0014] In a further embodiment, the airbag is fixedly mounted on the concave surface of the reinforcement member.

[0015] In a further embodiment, an air inlet pipe and an air outlet pipe are formed at the top end of the air bag, which are suitable for inflating and exhausting the air bag.

[0016] In a further embodiment, one-way valves are fixedly installed on both the air inlet pipe and the exhaust pipe.

[0017] In a further embodiment, a pressure gauge is fixedly installed on the exhaust pipe.

[0018] In a further embodiment, the top end portion of the protective sleeve, the top end portion of the airbag, and the top end portion of the reinforcement are fixed together by a connector.

[0019] In a further embodiment, the connecting member is a bolt.

[0020] In a further embodiment, the top end portion of the airbag, the top end portion of the reinforcement, and the top end portion of the casing are at the same height;

[0021] The bottom end of the air bag, the bottom end of the reinforcement and the bottom end of the plain concrete pile are at the same height.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. This concrete support device sets a jig body at the bite point of the plain concrete pile and the reinforced concrete pile. The shape of the jig body corresponds to the shape of the bite point. Before pouring the plain concrete pile, the jig body is fixed to the inner side of the casing. After the concrete is poured and has a certain strength, the jig body is removed to leave a gap at the bite position. There is no need to cut the concrete again, and the reinforced concrete pile can be constructed. The device is easy and quick to use, with high construction efficiency and speed, reducing the risk of leakage in the bite pile maintenance structure.

[0024] 2. This concrete support device can allow the concrete strength of the plain concrete pile to increase, which is beneficial to improving the concrete quality of the plain concrete pile. It does not require high control of the concrete setting time and does not need to use super-slow concrete to control the cutting time. Therefore, the construction sequence of the reinforced concrete pile is more flexible and can be adjusted according to the construction situation; and the mold body can be reused, and the material cost is low.

[0025] 3. The top of the airbag of this concrete support device is equipped with an air inlet pipe and an exhaust pipe. Both the air inlet pipe and the exhaust pipe are fixedly installed with a one-way valve. The two one-way valves are installed in opposite directions to avoid gas backflow and ensure the inflation effect of the airbag. A pressure gauge is also fixedly installed on the exhaust pipe or the air inlet pipe to facilitate real-time observation of the pressure changes in the airbag. The air pressure can be replenished at any time to ensure stable use of the airbag.

[0026] 4. This concrete support device has a wide range of applications and can be used in the construction of any steel-concrete interlocking piles. It is easy to implement and has low difficulty. When the construction period is tight, early strength agents can be added to the concrete to accelerate the setting time, increase the construction speed, and at the same time improve the turnover efficiency of the mold body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a top view of a concrete support device for snap piles;

[0028] Figure 2 A front cross-sectional view of a concrete support device for a snap pile;

[0029] Figure 3 for Figure 2 A in the enlarged view.

[0030] In the figure: 1. Plain concrete pile; 2. Reinforced concrete pile; 3. Casing; 4. Mould body; 41. Air bag; 411. Inlet pipe; 412. Exhaust pipe; 413. One-way valve; 414. Pressure gauge; 42. Reinforcement member; 43. Connector. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0032] Example 1:

[0033] A concrete support device for snap piles, such as Figures 1 to 3As shown, the interlocking piles are divided into plain concrete piles 1 and reinforced concrete piles 2. The plain concrete piles 1 and reinforced concrete piles 2 are arranged alternately and interlock with each other. A mold body 4 is set at the interlocking part of the plain concrete piles 1 and reinforced concrete piles 2. After the construction of the plain concrete piles 1 is completed, the mold body 4 is taken out and the reinforced concrete piles 2 can be constructed without cutting or drilling, which is quick and convenient.

[0034] like Figure 2 、 Figure 3 As shown, a casing 3 is provided on the outer side of the upper end of the plain concrete pile 1, and the top end of the casing 3 is higher than the ground. A mold body 4 is fixedly installed on the inner side of the casing 3, and the bottom end of the mold body 4 is located below the casing 3 and is at the same height as the bottom end of the plain concrete pile 1. The shape of the mold body 4 corresponds to the shape of the occlusal part of the plain concrete pile 1 and the reinforced concrete pile 2, and is a nearly elliptical structure; the mold body 4 includes an air bag 41 and a reinforcement 42, and the concave surface of the reinforcement 42 is fixedly installed with the air bag 41, so that when the mold body 4 is installed on both sides of the plain concrete pile 1, the reinforcement 42 is located at the outer edge of the plain concrete pile 1, that is, on the side close to the reinforced concrete pile 2, the air bag 41 is in direct contact with the concrete of the plain concrete pile 1, which is convenient for supporting the concrete and ensuring that the concrete of the plain concrete pile 1 will not collapse before solidification; the reinforcement 42 is an arc-shaped steel plate with a thickness of 14 mm, which ensures that the mold body 4 has a certain strength for support; the thickness of the part above the top end of the plain concrete pile 1 of the air bag 41 is less than the thickness of the part below the top end of the plain concrete pile 1, which is convenient for installation. Preferably, the airbag 41 can be fixedly mounted on the reinforcement 42 using a special adhesive, or the airbag 41 can be fixedly mounted on the reinforcement 42 using bolts, mortise and tenon joints, etc. The airbag 41 is made of rubber material.

[0035] like Figure 3As shown, the casing 3, the reinforcement 42 and the airbag 41 are fixed together by the connecting piece 43, which is suitable for enhancing the stability of the airbag 41 and preventing the airbag 41 from floating up during the concrete pouring process. The connecting piece 43 can be a component such as a hoop, a buckle or a bolt. In this embodiment, the connecting piece 43 adopts three groups of high-strength bolts with a diameter of 16 mm. The number and spacing of the bolts can be adjusted according to actual conditions. The casing 3, the reinforcement 42 and the airbag 41 are all provided with a number of corresponding bolt holes; the top part of the airbag 41 is provided with an air inlet pipe 411 and an exhaust pipe 412, and the airbag 41 is connected to the air inlet pipe 411 and the exhaust pipe 412. 411 is connected to a blower or other inflatable equipment, and the exhaust pipe 412 can also be connected to the inflatable equipment or not; a one-way valve 413 is fixedly installed on the air inlet pipe 411 and the exhaust pipe 412, and the installation directions of the two one-way valves 413 are opposite to each other, which can prevent gas backflow; a pressure gauge 414 is also fixedly installed on the exhaust pipe 412 for real-time monitoring of the pressure changes in the airbag 41, and the pressure can be replenished at any time to ensure that the airbag 41 can work normally; the pressure gauge 414 can also be fixedly installed on the air inlet pipe 411, or the pressure gauge 414 can be fixedly installed on both the air inlet pipe 411 and the exhaust pipe 412.

[0036] The working principle of the present utility model is as follows: after the casing 3 of the plain concrete pile 1 is installed, a mold release agent is applied to the mold body 4, and then the mold body 4 is fixedly installed on the casing 3 through the connecting piece 43, the one-way valve 413 of the air inlet pipe 411 is opened and the one-way valve 413 of the exhaust pipe 412 is closed, and air is inflated into the airbag 41 through the inflation device. After the airbag 41 is fully inflated, the one-way valve 413 is closed, and the concrete of the plain concrete pile 1 is poured.

[0037] After the concrete of the plain concrete pile 1 has a certain strength and is ensured not to collapse, the jig body 4 and the casing 3 are pulled out, and then the reinforced concrete pile 2 is drilled. Since there is no concrete at the engaging position after the jig body 4 is pulled out, the reinforced concrete pile 2 does not need to be cut and can be directly constructed, which speeds up the construction speed. The reinforced concrete pile 2 can be constructed in any order, making the construction more flexible.

[0038] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A concrete support device for bite piles, characterized in that: include: A mold body (4) is located at the engaging position of the plain concrete pile (1) and the reinforced concrete pile (2); the mold body (4) is fixedly mounted on the casing (3) of the plain concrete pile (1) and is suitable for supporting the concrete of the plain concrete pile (1); The mold body (4) comprises an air bag (41) and a reinforcement (42); the reinforcement (42) is fixedly mounted on one side of the air bag (41); the reinforcement (42) is close to the reinforced concrete pile (2); and the air bag (41) is close to the plain concrete pile (1).

2. The concrete support device for occlusal piles according to claim 1, characterized in that: The shape of the mold body (4) corresponds to the shape of the occlusal position.

3. The concrete support device for occlusal piles according to claim 2, characterized in that: The reinforcement member (42) is an arc-shaped plate structure.

4. The concrete support device for occlusal piles according to claim 3, characterized in that: The airbag (41) is fixedly mounted on the concave surface of the reinforcement (42).

5. The concrete support device for occlusal piles according to claim 4, characterized in that: The top end of the air bag (41) is provided with an air inlet pipe (411) and an exhaust pipe (412), which are suitable for inflating and exhausting the air bag (41).

6. The concrete support device for occlusal piles according to claim 5, characterized in that: One-way valves (413) are fixedly installed on the air inlet pipe (411) and the exhaust pipe (412).

7. The concrete support device for occlusal piles according to claim 6, characterized in that: A pressure gauge (414) is fixedly installed on the exhaust pipe (412).

8. The concrete support device for occlusal piles according to claim 7, characterized in that: The top end of the protective tube (3), the top end of the air bag (41), and the top end of the reinforcement (42) are fixed together via a connecting piece (43).

9. The concrete support device for occlusal piles according to claim 8, characterized in that: The connecting member (43) is a bolt.

10. The concrete support device for occlusal piles according to claim 9, characterized in that: The top end of the air bag (41), the top end of the reinforcement (42) and the top end of the protective tube (3) are at the same height; The bottom end of the air bag (41), the bottom end of the reinforcement (42) and the bottom end of the plain concrete pile (1) are at the same height.

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