Flexible pile casing

Abstract

The utility model discloses a flexible pile casing, relates to pile casing structure technical field, including pile casing main part, a plurality of spacing hoop and a plurality of fixed part, the pile casing main part is flexible piece and is arranged in the shape of cylinder, a plurality of spacing hoop is sleeved on the periphery of pile casing main part and is distributed at interval along the axial direction of pile casing main part, each spacing hoop can shrink or expand under the force; each limiting hoop is connected with the pile casing main body through at least one fixing piece; therefore, compared with a steel pile casing, the steel pile casing is low in cost, light in weight and convenient to machine, transport and install, and the requirement for construction equipment is lowered; meanwhile, the pile casing main body is used in cooperation with the limiting hoop, expansion of the pile casing main body is free within the free stroke of the limiting hoop, after the maximum stroke of the limiting hoop is reached, the pile casing main body reaches the maximum deformation amount, at the moment, the limiting hoop resists concrete pressure, and the strength of the flexible pile casing is remarkably improved; in addition, the pile casing body and the limiting hoop are connected through the fixing piece, and the limiting hoop can be prevented from deviating in the construction process.

Description

TECHNICAL FIELD

[0001] The utility model relates to a casing structure technical field, concretely relates to a flexible casing. BACKGROUND

[0002] In various engineering constructions, especially in the field of foundation construction, the casing plays a vital role. The traditional steel casing is widely used in engineering, but it has many drawbacks. The steel casing is usually made of steel, which has a high cost, and a lot of manpower, material and financial resources are needed in the process of processing, transportation and installation. At the same time, the weight of the steel casing is large, which requires high construction equipment and increases the construction cost. SUMMARY

[0003] The main purpose of the utility model is to provide a flexible casing, which aims to solve the above problems.

[0004] To achieve the above purpose, the utility model provides a flexible casing, which comprises:

[0005] The casing body is a flexible part and is arranged in a cylindrical shape;

[0006] A plurality of limiting hoops are sleeved on the outer periphery of the casing body and are distributed along the axial direction of the casing body, and each limiting hoop can be reduced or expanded under stress; and

[0007] A plurality of fixing members are connected between each limiting hoop and the casing body.

[0008] Optionally, the limiting hoop comprises:

[0009] A connecting member is arranged in a ring shape and has a first end and a second end;

[0010] A first limiting member is arranged at the first end of the connecting member and is arranged in a spiral shape; and

[0011] A second limiting member is arranged at the second end of the connecting member and is arranged in a spiral shape.

[0012] The first limiting member passes through the second limiting member, and the second limiting member passes through the first limiting member.

[0013] Optionally, the limiting hoop is a reinforcing member.

[0014] Optionally, the preparation material of the casing body is the same as that of the fixing member.

[0015] Optionally, the casing body is a geotextile member.

[0016] Optionally, the fixing member is a geotextile strip.

[0017] Optionally, two ends of the geotextile piece are heat fusion connected to form the casing body.

[0018] Optionally, two limiting members are arranged on each limiting sleeve, and the two limiting members are symmetrically arranged along the axis of the casing body.

[0019] In the technical scheme, the casing body is a flexible piece, and compared with a steel casing, the casing body has lower cost and smaller weight, and is convenient for processing, transportation and installation, and also reduces the requirement of construction equipment; meanwhile, the casing body is expanded to form an expansion body when the casing body is subjected to the pressure of concrete when passing through a karst cave, and the casing body is used in cooperation with the limiting sleeve, and the expansion of the casing body is relatively free within the free stroke of the limiting sleeve, and when the maximum stroke of the limiting sleeve is reached, the casing body reaches the maximum deformation amount, and at this time, the limiting sleeve resists the pressure of concrete, and the strength of the flexible casing is significantly improved; in addition, the casing body and the limiting sleeve are connected through the fixing piece, and the deviation of the limiting sleeve in the construction process can be prevented. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative labor.

[0021] Figure 1 The structural schematic view of one embodiment of the flexible casing provided by the present application is shown in the figure.

[0022] Figure 2 The structural schematic view of the limiting sleeve of the flexible casing is shown in the figure. Figure 1

[0023] Explanation of reference numerals:

[0024]

[0025]

[0026] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0027] ​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by the person skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directional indications also change accordingly.

[0029] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the person skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0030] In various types of engineering construction, especially in the field of foundation construction, the pile casing plays a crucial role. The traditional steel pile casing is widely used in engineering, but it has many drawbacks. Steel pile casing is usually made of steel, which has a high cost, and a large amount of manpower, material and financial resources are needed in the process of processing, transportation and installation. At the same time, the weight of the steel pile casing is large, which requires higher construction equipment and increases the construction cost.

[0031] Therefore, the present application provides a flexible pile casing 100, Figure 1 and Figure 2 An embodiment of the flexible pile casing 100 provided by the present application.

[0032] Please refer to Figure 1The flexible casing 100 comprises a casing body 1, a plurality of limiting sleeves 2 and a plurality of fixing members 3, the casing body 1 is a flexible member and is cylindrically arranged, the plurality of limiting sleeves 2 are sleeved on the outer periphery of the casing body 1 and are spaced along the axial direction of the casing body 1, and each limiting sleeve 2 can be reduced or expanded under stress; and each limiting sleeve 2 is connected with the casing body 1 through at least one fixing member 3.

[0033] In the technical scheme of the utility model, the casing body 1 is a flexible member, which is lower in cost and lighter in weight compared with a steel casing, facilitating processing, transportation and installation and reducing the requirements for construction equipment; meanwhile, the casing body 1 can be expanded to form an expansion body under the concrete pressure when passing through a karst cave, and the expansion body is used in cooperation with the limiting sleeve 2, within the free stroke of the limiting sleeve 2, the expansion of the casing body 1 is relatively free, and when the maximum stroke of the limiting sleeve 2 is reached, the casing body 1 reaches the maximum deformation amount, at this time, the limiting sleeve 2 resists the concrete pressure, significantly improving the strength of the flexible casing 100; in addition, the casing body 1 and the limiting sleeve 2 are connected through the fixing member 3, which can prevent the limiting sleeve 2 from deviating during construction. The flexible casing 100 provided by the utility model is suitable for pile forming of a cast-in-situ bored pile passing through a karst cave, and the expansion section of the cast-in-situ bored pile formed by the expansion of the flexible casing 100 can fully utilize the bearing capacity of the karst cave floor, improving the bearing capacity of the cast-in-situ bored pile.

[0034] Further, referring to Figure 2 The limiting sleeve 2 comprises a connecting member 21, a first limiting member 22 and a second limiting member 23, the connecting member 21 is annularly arranged and has a first end and a second end; the first limiting member 22 is arranged at the first end of the connecting member 21 and is spirally arranged; the second limiting member 23 is arranged at the second end of the connecting member 21 and is spirally arranged; wherein the first limiting member 22 is arranged through the second limiting member 23, and the second limiting member 23 is arranged through the first limiting member 22.

[0035] In this way, under the action of external force, the first limiting member 22 and the second limiting member 23 are close to or away from each other, so that the limiting sleeve 2 can be expanded or reduced, and the spacing between the first limiting member 22 and the second limiting member 23 is the free stroke range of the limiting sleeve 2, and further, the deformation amount of the expansion of the casing body 1 can be set by adjusting the spacing between the first limiting member 22 and the second limiting member 23. Specifically, under the action of the concrete pressure, the casing body 1 expands, thereby extruding the limiting sleeve 2 to expand, when the limiting sleeve 2 expands to the abutting state of the first limiting member 22 and the second limiting member 23, the limiting sleeve 2 is in a tight state, thereby limiting the deformation of the casing body 1.

[0036] Further, in an embodiment of the present application, the limiting sleeve 2 is a reinforcing member. More specifically, the limiting sleeve 2 is made of thin reinforcing steel.

[0037] Specifically, the preparation material of the casing body 1 is the same as that of the fixing member 3, that is, the fixing member 3 is also a flexible member.

[0038] More specifically, the preparation material of the casing body 1 can be canvas, steel mesh, etc.

[0039] More specifically, in an embodiment of the present application, the casing body 1 is a geotextile member. The geotextile is not only a flexible material, but also has an elongation at break of about 50%, which is highly practical.

[0040] Further, the fixing member 3 is a geotextile strip.

[0041] Specifically, in an embodiment of the present application, the two ends of the geotextile member are hot melt connected to form the casing body 1, which is simple to operate.

[0042] Specifically, in an embodiment of the present application, two limiting members are arranged on each limiting sleeve 2, and the two limiting members are symmetrically arranged along the axis of the casing body 1, so that the casing body 1 is uniformly stressed.

[0043] The above is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like within the scope of the present application is included in the patent protection scope of the present application.

Claims

1. A flexible casing, characterized in that, The flexible casing comprises: a casing body which is flexible and cylindrically arranged; a plurality of limiting hoops which are sleeved on the outer periphery of the casing body and are spaced along the axial direction of the casing body, each of the limiting hoops being capable of being reduced or expanded under stress; and a plurality of fixing members, each of the limiting hoops being connected to the casing body by at least one of the fixing members.

2. The flexible bushing of claim 1, wherein, The limiting hoop comprises: a connecting member which is annularly arranged and has a first end and a second end; a first limiting member which is arranged at the first end of the connecting member and is helically arranged; and a second limiting member which is arranged at the second end of the connecting member and is helically arranged; wherein the first limiting member is arranged through the second limiting member, and the second limiting member is arranged through the first limiting member.

3. The flexible bushing of claim 1 or 2, wherein, The limiting hoop is a reinforcing member.

4. The flexible sleeve of claim 1, wherein, The casing body and the fixing member are made of the same material.

5. The flexible canister of claim 1 or 4, wherein, The casing body is a geotextile member.

6. The flexible sleeve of claim 5, wherein, The fixing member is a geotextile strip.

7. The flexible bushing of claim 5, wherein, The two ends of the geotextile member are hot-melt connected to form the casing body.

8. The flexible canister of claim 1, wherein, Each of the limiting hoops is provided with two limiting members which are symmetrically arranged along the axis of the casing body.

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