Supporting device and supporting structure

Abstract

The utility model relates to the technical field of deep foundation pit supporting engineering, and discloses a supporting device and a supporting structure.The supporting device is suitable for being internally provided with an anchor cable in a penetrating mode and comprises a formwork fixed to the top end of a supporting pile, the formwork comprises at least four side plates, a hollow cavity is defined by the at least four side plates and the end of the supporting pile, and the anchor cable is arranged in the hollow cavity in a penetrating mode; the supporting piece is arranged in the hollow cavity and is suitable for providing shearing resistance in the vertical direction; one end of the connecting piece is fixedly connected to the formwork, the other end of the connecting piece is fixedly connected to the supporting piece, and the connecting piece is suitable for fixing the installation position of the formwork. The anchor cables are arranged at the top ends of the supporting piles, horizontal displacement of the top ends of the supporting piles can be effectively controlled, the construction cost can be reduced, the working face in a foundation pit is not occupied, and safety and reliability are achieved. The formwork and the supporting piece are fixedly connected through the connecting piece, it can be guaranteed that the formwork does not move when top beam concrete is poured, and therefore it is guaranteed that the anchoring position and the anchoring angle of the anchor cable do not change, and the prestress tension strength of the anchor cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of deep foundation pit support engineering, in particular to a support device and a support structure. Background Art

[0002] In deep foundation pit support projects, the anchor-pull support structure (i.e., support pile + prestressed anchor cable structure) has the advantages of low construction cost, no occupation of the working surface in the foundation pit, safety and reliability in the pile row support structure, and has been widely used in the field of deep foundation pit support. Specifically, after the pile driving is completed, the foundation pit is excavated. At this time, the top of the support pile is in a cantilever state, which is prone to horizontal displacement. Therefore, a prestressed anchor cable is obliquely arranged at the top of the support pile, that is, one end of the anchor cable is pre-buried in the foundation pit, and the other end is fixed to the top of the support pile, which can effectively control the horizontal displacement of the top of the support pile. However, in order to improve the integrity of the support pile, a concrete crown beam is usually arranged at the top of the support pile. Specifically, the steel bars are first tied to the top of the support pile for vertical shear resistance, and then a formwork is erected, and an opening is opened on the formwork for the anchor cable to pass through. The end of the anchor cable is extended out of the formwork, and finally the concrete is poured. However, the impact force generated by the cap beam during concrete pouring may change the anchoring position and anchoring angle of the anchor cable, thereby affecting the prestressed tension strength of the anchor cable. Utility Model Content

[0003] In view of this, the utility model provides a supporting device and a supporting structure to solve the problem that the impact force generated by the crown beam during the pouring of concrete will affect the prestressed tensioning strength of the anchor cable.

[0004] In a first aspect, the utility model provides a support device, wherein the support device is suitable for passing an anchor cable, and comprises:

[0005] A template is fixed to the top of the supporting pile, the template includes at least four side plates, at least four side plates and the ends of the supporting piles form a hollow cavity, and the anchor cable is passed through the hollow cavity;

[0006] A support member, disposed in the hollow cavity, adapted to provide vertical shear resistance;

[0007] A connecting piece, one end of which is fixedly connected to the template and the other end of which is fixedly connected to the supporting piece, is suitable for fixing the installation position of the template.

[0008] Beneficial effects: By setting the anchor cable at the top of the supporting pile, the horizontal displacement of the top of the supporting pile can be effectively controlled; and by using the supporting pile and prestressed anchor cable in combination for support, the construction cost can be reduced, the working surface in the foundation pit is not occupied, and it is safe and reliable; by setting the template at the top of the supporting pile, it is convenient to form a crown beam after pouring concrete, so as to improve the integrity of the supporting pile; by setting a support member in the hollow cavity of the template, the vertical shear resistance of the crown beam can be improved; by fixing the template and the support member through the connecting member, it can be ensured that the template does not move when pouring the crown beam concrete, thereby ensuring that the anchoring position and anchoring angle of the anchor cable do not change, thereby improving the prestressed tensioning strength of the anchor cable.

[0009] In an optional embodiment, the connecting member is provided with at least two;

[0010] And / or, the connecting member is a steel bar.

[0011] Beneficial effect: By providing at least two connecting members, the connection firmness between the template and the support member can be improved.

[0012] In an optional embodiment, the template includes:

[0013] A pressure-bearing plate, wherein the pressure-bearing plate, the side plate and the ends of the supporting piles together enclose the hollow cavity, one end of the connecting piece is connected to the pressure-bearing plate, and the anchor cable passes through the pressure-bearing plate.

[0014] Beneficial effect: By setting the pressure plate, the structural strength of the connection end between the template and the anchor cable can be improved, preventing the template from tilting before pouring concrete, which would change the anchor position and anchor angle of the anchor cable.

[0015] In an optional embodiment, the pressure plate is arranged at an angle.

[0016] In an optional embodiment, the plane where the pressure plate is located is perpendicular to the extension length direction of the anchor cable.

[0017] Beneficial effect: By arranging the pressure plate and the anchor cable vertically, it is easy to process, simple to install and convenient to construct.

[0018] In an optional embodiment, the pressure plate is provided with a through hole, and the anchor cable is passed through the through hole;

[0019] And / or, the connecting member is a connecting rod, and the connecting rod has an extension length of 200 mm and a diameter of 10 mm.

[0020] In an optional embodiment, the supporting device comprises:

[0021] A support rod is disposed in the hollow cavity. The support rod has a hollow structure, and the anchor cable is passed through the hollow structure.

[0022] Beneficial effect: By setting the support rod, it is possible to prevent the concrete from bonding with the anchor cable, and to lose part of the tensioning force during prestressing, thereby improving the supporting effect of the anchor cable.

[0023] In an optional embodiment, both ends of the support rod abut against the inner side wall of the template.

[0024] Beneficial effect: By abutting both ends of the support rod against the inner wall of the template, the anchor cable can be prevented from adhering to the concrete to the greatest extent.

[0025] In an optional embodiment, the support member includes:

[0026] At least two transverse steel bars are arranged in the hollow cavity and along the extension length direction of the template;

[0027] At least two stirrups are arranged perpendicular to the extension length direction of the template and are sleeved on the transverse steel bars at intervals.

[0028] Beneficial effect: By arranging stirrups, at least two transverse steel bars can be tied and fixed.

[0029] In a second aspect, the utility model further provides a support structure, comprising:

[0030] Support piles;

[0031] The above-mentioned supporting device is fixed to the top of the supporting pile;

[0032] An anchor cable is passed through the hollow cavity of the supporting device.

[0033] Beneficial effect: Since the supporting structure includes the supporting device, it has the same effect as the supporting device and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 This is a structural schematic diagram of a supporting structure according to an embodiment of the utility model;

[0036] Figure 2This is a structural schematic diagram of a supporting device according to an embodiment of the utility model;

[0037] Figure 3 for Figure 2 A schematic diagram of the partial structure of the supporting device shown.

[0038] Description of reference numerals:

[0039] 1. Anchor cable; 2. Formwork; 21. Side plate; 22. Pressure plate; 221. Through hole; 3. Support pile; 4. Support member; 41. Transverse steel bar; 42. Stirrup; 5. Connector; 6. Support rod. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0041] Combine the following Figures 1 to 3 , describing an embodiment of the utility model.

[0042] According to the embodiments of the utility model, on the one hand, a supporting device is provided, in which an anchor cable 1 is passed, comprising: a template 2, fixed to the top of a supporting pile 3, the template 2 comprising at least four side plates 21, at least four side plates 21 and the ends of the supporting piles 3 forming a hollow cavity, in which the anchor cable 1 is passed; a supporting member 4, arranged in the hollow cavity, suitable for providing vertical shear resistance; a connecting member 5, one end of which is fixedly connected to the template 2, and the other end of which is fixedly connected to the supporting member 4, suitable for fixing the installation position of the template 2.

[0043] By setting the anchor cable 1 at the top of the supporting pile 3, the horizontal displacement of the top of the supporting pile 3 can be effectively controlled; and by using the supporting pile 3 and the prestressed anchor cable 1 to support, the construction cost can be reduced, the working surface in the foundation pit is not occupied, and it is safe and reliable; by setting the template 2 at the top of the supporting pile 3, it is convenient to form a crown beam after pouring concrete to improve the integrity of the supporting pile 3; by setting the support member 4 in the hollow cavity of the template 2, the vertical shear resistance of the crown beam can be improved; by fixing the template 2 and the support member 4 through the connecting member 5, it can be ensured that the template 2 does not move when pouring the crown beam concrete, thereby ensuring that the anchoring position and anchoring angle of the anchor cable 1 do not change, thereby improving the prestressed tensioning strength of the anchor cable 1.

[0044] The vertical direction in this embodiment is Figure 1The vertical direction in .

[0045] like Figure 2 As shown, in this embodiment, there are four side panels 21, and multiple supporting piles 3 are arranged side by side. The four side panels 21 are arranged above the multiple supporting piles 3, and form a hollow cavity with the tops of the multiple supporting piles 3. Among them, the side panels 21 include a first side panel, a second side panel, a third side panel and a fourth side panel, the first side panel and the second side panel are arranged oppositely, and the third side panel and the third side panel are arranged oppositely. The first side panel and the second side panel are arranged in the arrangement direction of the multiple supporting piles, and the extension length of the first side panel and the second side panel is the same as the distance between the two supporting piles 3 at the farthest end; the third side panel and the fourth side panel are arranged above the two supporting piles at the farthest end, and the extension length of the third side panel and the fourth side panel is the same as the cross-sectional size of the supporting pile 3. One end of the anchor cable 1 is pre-buried in the foundation pit on the side where the first side panel is located, and the other end passes through the side of the second side panel. Specifically, the extension length direction of the first side panel and the second side panel is perpendicular to the direction of the paper surface, and the extension length direction of the third side panel and the fourth side panel is parallel to the direction of the paper surface. As a convertible implementation, the first side panel and the second side panel may be an integrated structure, or may be formed by splicing a plurality of flat panels.

[0046] like Figure 2 As shown, the template 2 in this embodiment includes: a pressure plate 22, the pressure plate 22 and the side plate 21 and the end of the support pile 3 together form a hollow cavity, the pressure plate 22 is connected to one end of the connecting piece 5, and the anchor cable 1 passes through the pressure plate 22. Specifically, the pressure plate 22 is arranged above the second side plate, and the anchor cable 1 is fixedly connected to the pressure plate 22 by an anchor after extending from the pressure plate 22. The pressure plate 22 is made of a steel plate, and the extension length of the steel plate is the same as the extension length of the first side plate and the second side plate, and the thickness of the steel plate is 15mm. By setting the pressure plate 22, the structural strength of the connection end between the template 2 and the anchor cable 1 can be improved, and the template 2 can be prevented from tilting before pouring concrete, thereby changing the anchor position and anchor angle of the anchor cable 1. As a convertible embodiment, it can also be that the pressure plate 22 is arranged in the opening opened in the second side plate, and the pressure plate 22 is arranged corresponding to the connection end of the anchor cable 1 and the template 2.

[0047] In one embodiment, the cross-sectional size of the pressure plate 22 can be set to 200 mm*200 mm. Of course, in other embodiments, the cross-sectional size of the pressure plate 22 can also be set to other specific values, which are not limited here.

[0048] like Figure 2-Figure 3As shown, the pressure plate 22 is provided with a through hole 221, and the anchor cable 1 is inserted into the through hole 221. The pressure plate 22 is arranged at an angle; further, the plane where the pressure plate 22 is located is perpendicular to the extension length direction of the anchor cable 1. By arranging the pressure plate 22 and the anchor cable 1 perpendicularly, it is convenient to open the through hole 221 according to the cross-sectional shape of the anchor cable 1, which is simple to install and convenient to construct. As a convertible embodiment, it is also possible that the pressure plate 22 is arranged vertically, or the plane where the pressure plate 22 is located is at an angle to the extension length direction of the anchor cable 1.

[0049] like Figure 2 As shown, the support member 4 in this embodiment includes: a plurality of transverse steel bars 41, which are arranged in the hollow cavity and along the extension length direction of the template 2; a plurality of stirrups 42, which are arranged perpendicular to the extension length direction of the template 2 and are sleeved on the transverse steel bars 41 at intervals. The extension length direction of the template 2 is the direction perpendicular to the paper surface, and the direction perpendicular to the extension length direction of the template 2 is the direction parallel to the paper surface. By setting the stirrups 42, the plurality of transverse steel bars 41 can be tied and fixed. As a convertible embodiment, the number of transverse steel bars 41 and stirrups 42 is determined according to the actual situation, and no excessive restrictions are made here.

[0050] like Figure 3 As shown, when the pressure plate 22 is arranged in the opening of the second side plate, four connectors 5 are provided. One end of the four connectors 5 is welded and fixed to the four corners of the pressure plate 22, and the other end is welded to the corresponding position of the support member 4. By providing four connectors 5, the connection firmness between the template 2 and the support member 4 can be improved. As a convertible embodiment, six or eight connectors 5 can also be provided accordingly. The number of connectors 5 is determined according to the actual situation, and no excessive restrictions are made here.

[0051] Specifically, the connecting member 5 in this embodiment is a connecting rod, specifically a steel bar. The extension length of the steel bar is 200 mm and the diameter is 10 mm. As a convertible embodiment, the extension length and diameter of the steel bar can also be set according to actual needs.

[0052] like Figure 2 As shown, the support device in this embodiment includes: a support rod 6, which is arranged in the hollow cavity, and the support rod 6 has a hollow structure, and the anchor cable 1 is inserted into the hollow structure. Among them, the support rod 6 is a steel pipe sleeve, and both ends of the steel sleeve are in contact with the inner wall of the template 2. By providing the support rod 6, it is possible to prevent the concrete from adhering to the anchor cable 1, and part of the tensioning force is lost during prestressing, which can improve the support effect of the anchor cable 1; by abutting both ends of the steel sleeve against the inner wall of the template 2, it is possible to prevent the anchor cable 1 from adhering to the concrete to the greatest extent.

[0053] In this embodiment, an opening is provided in the hollow cavity of the template 2 and on a side away from the end of the supporting pile 3, through which concrete can be poured into the hollow cavity to form a crown beam, and after pouring the concrete, only the side plate 21 needs to be removed without removing the pressure plate 22.

[0054] According to an embodiment of the present utility model, on the other hand, a supporting structure is provided, including: a supporting pile 3; the above-mentioned supporting device, fixed to the top of the supporting pile 3; an anchor cable 1, inserted into the hollow cavity of the supporting device.

[0055] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A support device, wherein an anchor cable (1) is inserted into the support device, characterized in that: include: A template (2) is fixed to the top of the supporting pile (3), the template (2) comprising at least four side plates (21), at least four side plates (21) and the ends of the supporting pile (3) enclose a hollow cavity, and the anchor cable (1) is inserted into the hollow cavity; A support member (4) is disposed in the hollow cavity and is suitable for providing a vertical shear resistance; A connecting member (5) has one end fixedly connected to the template (2) and the other end fixedly connected to the supporting member (4), and is suitable for fixing the installation position of the template (2).

2. The support device according to claim 1, characterized in that: The connecting members (5) are provided with at least two; And / or, the connecting member (5) is a steel bar.

3. The supporting device according to claim 1, characterized in that: The template (2) comprises: A pressure plate (22), wherein the pressure plate (22), the side plate (21) and the end of the support pile (3) together form the hollow cavity, one end of the connecting piece (5) is connected to the pressure plate (22), and the anchor cable (1) passes through the pressure plate (22).

4. The supporting device according to claim 3, characterized in that: The pressure bearing plate (22) is arranged obliquely.

5. The supporting device according to claim 4, characterized in that: The plane where the pressure plate (22) is located is perpendicular to the extension length direction of the anchor cable (1).

6. The supporting device according to claim 3, characterized in that: The pressure bearing plate (22) is provided with a through hole (221), and the anchor cable (1) is passed through the through hole (221); And / or, the connecting member (5) is a connecting rod, the extending length of the connecting rod is 200 mm and the diameter is 10 mm.

7. The supporting device according to any one of claims 1 to 6, characterized in that: The supporting device comprises: A support rod (6) is disposed in the hollow cavity. The support rod (6) has a hollow structure, and the anchor cable (1) is inserted into the hollow structure.

8. The supporting device according to claim 7, characterized in that: Both ends of the support rod (6) abut against the inner side wall of the template (2).

9. The supporting device according to any one of claims 1 to 6, characterized in that: The support member (4) comprises: At least two transverse steel bars (41) are arranged in the hollow cavity and along the extension length direction of the template (2); At least two stirrups (42) are arranged perpendicular to the extension length direction of the template (2) and are sleeved on the transverse reinforcement (41) at intervals.

10. A support structure, characterized in that: include: Support piles (3); The supporting device according to any one of claims 1 to 9, fixed to the top of the supporting pile (3); An anchor cable (1) is inserted into the hollow cavity of the supporting device.

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