Pull rod sheath of anchoring structure

Abstract

The utility model discloses a pull rod sheath of an anchoring structure, which is characterized by comprising at least one pull rod sheath unit, the pull rod sheath unit comprises a sheath base and a sheath upper cover; the sheath base and the sheath upper cover are provided with groove structures, the first connecting piece and the second connecting piece are buckled, the two grooves are matched to form a cavity, the pull rod is arranged in the cavity in a penetrating mode, the two ends of the pull rod are connected with a wall, and the pull rod sheath can move relative to the pull rod. Third connecting pieces are arranged at the ends of the pull rod sheath units, and every two adjacent pull rod sheath units are connected through the corresponding third connecting piece. The pull rod protective sleeves are designed in a blocking mode, installation is flexible, and the number of the pull rod protective sleeves can be adjusted according to the actual length of the pull rod so that the pull rod protective sleeves can be suitable for pull rods of different lengths. When the sheath settles along with the soil body, the height of the inner cavity of the sheath has reserved settlement volume of the soil body, so that the sheath does not extrude the pull rod penetrating through the inner cavity in the sinking process, the pull rod is kept at the initial position, and the effect of protecting the pull rod is achieved.

Description

Technical Field

[0001] This application belongs to the technical field of tie rod sheaths, and particularly relates to a tie rod sheath for an anchor pulling structure. Background Art

[0002] In an anchor pulling system, the front wall and the rear anchor wall need to be connected by tie rods. Materials such as sand and soil are backfilled between the front wall and the anchor wall. After the backfilling is completed, the end of the tie rod needs to be tensioned behind the anchor wall to make the entire anchor pulling structure bear force.

[0003] The tie rod is usually directly buried in the backfilled soil mass or buried in the soil mass after installing a casing. The traditional casing cannot be installed after the tie rod is installed. Moreover, due to the large settlement during construction and after construction in the backfilled soil mass and soft soil stratum, the tie rod buried in the soil mass will be compressed and deformed or even damaged as the soil mass settles. The soil pressure perpendicular to the axial direction of the tie rod acts on the tie rod, seriously affecting the end tensioning effect and the force-bearing state of the anchor pulling system. Utility Model Content

[0004] This application aims to provide a tie rod sheath for an anchor pulling structure to solve the problems of bending deformation of the tie rod affected by soil settlement and inflexible installation of the casing.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of this application provides a tie rod sheath for an anchor pulling structure, including at least one tie rod sheath unit; the tie rod sheath unit includes: a sheath base and a sheath upper cover;

[0007] The sheath base includes a first groove extending in a first direction, and a first connecting member is provided at a position on the side wall of the first groove away from the bottom of the first groove;

[0008] The sheath upper cover includes a second groove extending in the first direction, and a second connecting member is provided at a position on the side wall of the second groove away from the bottom of the second groove;

[0009] The sheath base and the sheath upper cover are connected by the first connecting member and the second connecting member, and the first groove and the second groove cooperate to form a cavity for the tie rod to pass through along the first direction, and the tie rod sheath moves relative to the tie rod along a third direction;

[0010] Third connecting members are provided at both ends of the tie rod sheath unit arranged oppositely along the first direction, and adjacent two tie rod sheath units are connected by the third connecting members.

[0011] Optionally, the tie rod sheath unit includes: a first type of sheath unit, and the first type of sheath unit includes a first base and a first upper cover;

[0012] The first base includes the first groove extending along the first direction, and the first connecting member is disposed at a position on the side wall of the first groove away from the bottom of the first groove;

[0013] The first upper cover includes the second groove extending along the first direction, and the second connecting member is disposed at a position on the side wall of the second groove away from the bottom of the second groove;

[0014] The first base and the first upper cover are connected by the first connecting member and the second connecting member. The first groove and the second groove cooperate to form a cavity for the pull rod to pass through along the first direction, and the pull rod sheath moves relative to the pull rod in the third direction;

[0015] The distance between the two opposite ends of the cavity along the second direction is the cavity width d1, and d1 is greater than the diameter of the pull rod;

[0016] The third connecting member is disposed at the two opposite ends of the pull rod sheath unit along the first direction, and two adjacent pull rod sheath units are connected by the third connecting member.

[0017] Optionally, the pull rod sheath unit further includes: a second type of sheath unit, and the second type of sheath unit includes a second base and a second upper cover;

[0018] The second base includes the first groove extending along the first direction, and the first connecting member is disposed at a position on the side wall of the first groove away from the bottom of the first groove;

[0019] The second upper cover includes the second groove extending along the first direction, and the second connecting member is disposed at a position on the side wall of the second groove away from the bottom of the second groove;

[0020] The second base and the second upper cover are connected by the first connecting member and the second connecting member. The first groove and the second groove cooperate to form a cavity for the pull rod to pass through along the first direction, and the pull rod sheath moves relative to the pull rod in the third direction;

[0021] The cavity includes a first cavity and a second cavity. The distance between the two opposite ends of the first cavity along the second direction is the cavity width d1, and d1 is greater than the diameter of the pull rod. The distance between the two opposite ends of the second cavity along the second direction is the cavity width d2, and d2 is greater than the width of the pull rod connecting member, and d2 > d1;

[0022] The two opposite ends of the second cavity along the first direction are connected to the first cavity;

[0023] The pull rod sheath unit includes at least two of the first type of sheath units and at least one of the second type of sheath units. Third connectors are provided at both ends of the pull rod sheath unit arranged oppositely along the first direction, and adjacent two pull rod sheath units are connected by the third connectors.

[0024] Optionally, rib plates are provided on the surface of the pull rod sheath away from the inner cavity.

[0025] Optionally, the rib plates are arranged crosswise along the first direction and the third direction.

[0026] Optionally, the first connector and the second connector are a snap combination.

[0027] Optionally, the third connector is a plate member perpendicular to the second direction and protruding towards the side away from the cavity. The third connectors of adjacent two pull rod sheath units overlap and are connected and fixed by bolts.

[0028] Optionally, the sheath upper cover includes a first sub-block and a second sub-block. A first sub-block connector is provided on the surface of the first sub-block perpendicular to the third direction, and a second sub-block connector is provided on the surface of the second sub-block perpendicular to the third direction. The first sub-block and the second sub-block are connected by the first sub-block connector and the second sub-block connector, and cooperate to form the second groove extending along the first direction.

[0029] Optionally, the first sub-block connector and the second sub-block connector are plate members perpendicular to the second direction and protruding towards the side away from the cavity, and are connected and fixed by bolts.

[0030] In a second aspect, an anchor pulling structure is provided in an embodiment of the present application. A pull rod is disposed in the cavity of a pull rod sheath of the anchor pulling structure as described in the first aspect of the present application. The pull rod sheath is placed in the soil body, and both ends of the pull rod are fixedly connected to the wall body.

[0031] Optionally, the pull rod assembly includes a pull rod connector and at least two pull rods; the pull rod sheath includes at least two of the first type of sheath units and at least one of the second type of sheath units;

[0032] The pull rod connector connects adjacent two pull rods. The pull rod connector is disposed in the cavity of the second type of sheath unit, and two of the first type of sheath units are respectively connected to both ends of the second type of sheath unit through the third connectors.

[0033] Compared with the prior art, the present application has the following advantages:

[0034] The present application discloses a tie rod sheath for an anchor structure, which includes at least one tie rod sheath unit; the tie rod sheath unit includes: a sheath base and a sheath upper cover; the sheath base and the sheath upper cover have groove structures and are fastened by a first connecting member and a second connecting member, and the two grooves cooperate to form a cavity. The tie rod passes through the cavity and is connected to the wall at both ends. The tie rod sheath can move up and down relative to the tie rod; a third connecting member is provided at the end of the tie rod sheath unit, and two adjacent tie rod sheath units are connected into a whole through the third connecting member. The tie rod sheath in the present application adopts a segmented design, and the installation is relatively flexible. It can be installed after the tie rod is installed, and the number of tie rod sheaths can be adjusted according to the actual length of the tie rod to adapt to tie rods of different lengths. During the service period, the sheath will settle with the settlement of the soil body. Since the height of the inner cavity of the sheath has reserved the settlement amount of the soil body, the tie rod passing through the inner cavity will not be squeezed during the sinking process of the sheath, so that the tie rod remains in the initial position, thus achieving the effect of protecting the tie rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the present application, the drawings required for the description of the present application will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0036] Figure 1 is the front view and side view of a tie rod sheath unit according to an embodiment of the present application;

[0037] Figure 2 is the front view and side view of a first type of sheath unit according to another embodiment of the present application;

[0038] Figure 3 is the three-dimensional schematic diagram of a first type of sheath unit according to another embodiment of the present application;

[0039] Figure 4 is the overall structural schematic diagram of a first type of sheath unit according to another embodiment of the present application;

[0040] Figure 5 is the front view and side view of a second type of sheath unit according to another embodiment of the present application;

[0041] Figure 6 is the three-dimensional schematic diagram of a second type of sheath unit according to another embodiment of the present application;

[0042] Figure 7 is the overall structural schematic diagram of a second type of sheath unit according to another embodiment of the present application;

[0043] Figure 8It is a schematic diagram of the anchor pulling structure according to another embodiment of the present application.

[0044] Reference numerals: 100: Tie rod sheath unit; 10: Sheath base: 11: First connecting member; 12: First groove; 20: Sheath upper cover; 21: Second connecting member; 22: Second groove; 23: First sub-block; 24: Second sub-block; 25: First sub-block connecting member; 26: Second sub-block connecting member; 30: Cavity; 31: First cavity; 32: Second cavity; 40: Third connecting member; 50: Rib plate; 200: First type sheath unit; 210: First base; 220: First upper cover; 300: Second type sheath unit; 310: Second base; 320: Second upper cover; 400: Tie rod connecting member. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope fixed by the present utility model.

[0046] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / " generally means an "or" relationship between the associated objects before and after.

[0047] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0048] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" 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 mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0049] As Figure 1 shown, an embodiment of the present invention provides a tie rod sheath for an anchor pulling structure, which includes at least one tie rod sheath unit 100; the tie rod sheath unit 100 includes: a sheath base 10 and a sheath upper cover 20; the sheath base 10 includes a first groove 12 extending along a first direction X, and a first connecting member 11 is provided at a position on the side wall of the first groove away from the bottom of the first groove; the sheath upper cover 20 includes a second groove 22 extending along the first direction X, and a second connecting member 21 is provided at a position on the side wall of the second groove away from the bottom of the second groove; the sheath base 10 and the sheath upper cover 20 are connected through the first connecting member 11 and the second connecting member 21, and the first groove 12 and the second groove 22 cooperate to form a cavity 30 for a tie rod to pass through along the first direction X, and the tie rod sheath moves relative to the tie rod along a third direction Z; third connecting members 40 are provided at two ends of the tie rod sheath unit 100 arranged oppositely along the first direction X, and adjacent two tie rod sheath units 100 are connected through the third connecting members 40.

[0050] The tie rod sheath in this embodiment is a segmented structure. One tie rod sheath unit 100 is composed of a sheath base 10 and a sheath upper cover 20. Both the sheath base 10 and the sheath upper cover 20 are groove structures with one end open and one end closed. By connecting the two grooves relatively at the open ends, a cavity 30 that is closed on all sides and open at both ends is obtained. The tie rod sheath surrounds the outside of the tie rod, and the tie rod sheath can move relative to the tie rod within the space range of the cavity 30 without squeezing the tie rod.

[0051] The installation sequence of the tie rod sheath in this embodiment is relatively flexible. The tie rod can be installed first, and then the sheath. After the tie rod is installed, first place the sheath base 10 on the soil layer under the tie rod, adjust the position and elevation, and connect the sections of the sheath base 10 by the third connecting member 40 to cover the entire length range of the tie rod. Both the sheath base 10 and the sheath upper cover 20 are grooves with one end open and one end closed. The first connecting member 11 and the second connecting member 21 are respectively arranged at the open ends of the grooves. Docking the first connecting member 11 and the second connecting member 21 on the sheath upper cover 20 and the sheath base 10 one by one, the two grooves docked along the open end of the groove can be closed to form a cavity that is open at both ends along the first direction and enclosed on all sides along the second direction and the third direction. Then, axially connect the sheath upper cover 20 by the third connecting member 40, and the installation of the tie rod sheath is completed. The traditional installation method is to install a layer of circular plastic pipe on the tie rod as a protective sleeve. The circular sleeve cannot be installed after the tie rod is installed, which brings inconvenience to the construction. By using the segmented tie rod sheath of the present application, the tie rod can be installed on the wall for end tensioning first, and then the sheath can be installed. It is flexible in construction and does not affect the force on the tie rod.

[0052] The installed tie rod sheath covers the length range of the tie rod to protect the tie rod. The sheath in this embodiment is composed of a plurality of tie rod sheath units 100 spliced together. The number of tie rod sheath units 100 can be adjusted according to the actual length of the tie rod for free combination, which is convenient for applying to tie rods of different lengths. The embodiments of the present application do not limit it.

[0053] It can be understood that in this embodiment, during the design service life, the settlement amount of the tie rod sheath is less than the reserved height of the inner cavity of the sheath. There is still a certain design redundancy between the top of the inner cavity of the tie rod sheath and the tie rod, and it will not cause extrusion to the tie rod due to settlement. A cavity for relative movement of the sheath and the tie rod is formed inside the tie rod sheath. In actual use, the tie rod sheath is placed in the soil body, the tie rod passes through the cavity of the tie rod sheath, and both ends of the tie rod are connected to the wall. The tie rod sheath can make limited movement within the height range of its inner cavity. When moving within this range, the tie rod sheath will not squeeze the tie rod, nor will it damage the structure and force of the tie rod. The tie rod still maintains its original position and force state. The height of the inner cavity can be determined by adding the total settlement amount of the soil body within the calculated engineering design service life to the diameter of the tie rod, and then considering a certain amount of surplus. After the soil body is backfilled, the sheath directly contacts the soil body and sinks with the settlement of the soil body. Since the height of the inner cavity of the sheath is calculated based on the total settlement amount of the soil body within the engineering design service life plus the diameter of the tie rod, and there is a certain safety redundancy, within the engineering design service life, the height of the inner cavity of the sheath can fully meet the height of the sheath sinking with the settlement of the soil body, ensuring that the inner wall of the sheath does not exert an extrusion effect on the tie rod and preventing the soil pressure from damaging the tie rod.

[0054] Specifically, the sheath can be made of materials such as plastic, steel, or aluminum alloy. The thickness of the material can be determined according to the soil quality and burial depth. From the perspectives of economy and safety, it is ensured that the sheath does not undergo significant deformation under the action of soil pressure.

[0055] Optionally, as Figure 2 - Figure 4 shown, in some embodiments, the tie rod sheath unit 100 includes: a first type sheath unit 200, and the first type sheath unit 200 includes a first base 210 and a first upper cover 220; the first base 210 includes a first groove 12 extending along the first direction X, and a first connecting member 11 is provided at a position on the side wall of the first groove away from the bottom of the first groove; the first upper cover 220 includes a second groove 22 extending along the first direction X, and a second connecting member 21 is provided at a position on the side wall of the second groove away from the bottom of the second groove; the first base 210 and the first upper cover 220 are connected by the first connecting member 11 and the second connecting member 21, and the first groove 12 and the second groove 22 cooperate to form a cavity 30 for the tie rod to pass through along the first direction X, and the tie rod sheath moves relative to the tie rod along the third direction Z; the distance between the two opposite ends of the cavity along the second direction Y is the cavity width d1, and d1 is greater than the diameter of the tie rod; third connecting members 40 are provided at the two opposite ends of the tie rod sheath unit 100 along the first direction X, and adjacent two tie rod sheath units 100 are connected by the third connecting members 40.

[0056] The first type sheath 200 is used for passing through the tie rod. The inner cavity width of the sheath can be adjusted according to the diameter of the tie rod and should be greater than the diameter of the tie rod. A certain space is reserved on both the left and right sides to ensure that the sheath does not contact the tie rod during the settlement of the soil body and prevent the tie rod from being extruded by the inner wall of the sheath.

[0057] Optionally, as Figure 5 - Figure 7As shown, in some embodiments, the tie rod sheath unit 100 further includes: a second type of sheath unit 300, which includes a second base 310 and a second upper cover 320; the second base 310 includes a first groove 12 extending along the first direction X, and a first connecting member 11 is provided at a position on the side wall of the first groove away from the bottom of the first groove; the second upper cover 320 includes a second groove 22 extending along the first direction X, and a second connecting member 21 is provided at a position on the side wall of the second groove away from the bottom of the second groove; the second base 310 and the second upper cover 320 are connected by the first connecting member 11 and the second connecting member 21, and the first groove 12 and the second groove 22 cooperate to form a cavity 30 for the tie rod to pass through along the first direction X, and the tie rod sheath moves relative to the tie rod along the third direction Z; the cavity 30 includes a first cavity 31 and a second cavity 32, the distance between the two opposite ends of the first cavity 31 along the second direction Y is the cavity width d1, d1 is greater than the diameter of the tie rod, the distance between the two opposite ends of the second cavity 32 along the second direction Y is the cavity width d2, d2 is greater than the width of the tie rod connecting member 400, and d2 > d1; the two opposite ends of the second cavity 32 along the first direction X are connected to the first cavity 31; the tie rod sheath unit 100 includes at least two first type sheath units 200 and at least one second type sheath unit 300, and third connecting members 40 are provided at the two opposite ends of the tie rod sheath unit 100 along the first direction X, and adjacent two tie rod sheath units 100 are connected by the third connecting members 40.

[0058] As Figure 8 shown, when multiple tie rods are connected to form an anchor pulling system, the tie rods need to be connected. In this application, the connection method between the tie rods is not limited. However, for the purpose of improving the connection strength, a design such as a fish-eye joint is usually adopted at the connection of the tie rods to enlarge the cross-section of the tie rod, and then two adjacent tie rods are connected together through a metal bearing. Considering the improvement of the connection strength, the size at the connection of the tie rods is usually larger than the diameter of the tie rod, and the first type of sheath 200 for passing through the tie rod is not applicable at the connection of the tie rods. At this time, a second type of sheath 300 matching the size of the tie rod connecting member 400 needs to be used at the connection of the tie rods. The second type of sheath 300 has two cavities 30 with different cross-section widths. The two ends of the second cavity 32 with a larger cross-section width are connected to the two first cavities 31 with a smaller cross-section width to adapt to the connection between the two ends of the tie rod connecting member 400 and the tie rod. The second cavity 32 covers the tie rod connecting member 400, and its width is sufficient to accommodate the tie rod connecting member 400 and ensure that the inner wall of the sheath will not squeeze the tie rod connecting member 400 during the settlement process. The sizes of the first cavities 31 at both ends are the same as those of the cavities 30 in the first type of sheath 200 and are connected to the first type of sheath 200 through the third connecting members 40 to prevent bending deformation at the connection of the tie rods.

[0059] Optionally, asFigure 1 As shown, in some embodiments, rib plates 50 are provided on the surface of the tie rod sheath of the anchor pulling structure away from the cavity 30.

[0060] When the soil pressure is large, or the axial length of the tie rod sheath unit 100 is long and the stiffness is insufficient, rib plates 50 can be provided on the outer surfaces of the sheath base 10 and the sheath upper cover 20. The width and height of the rib plates 50 can be determined according to the soil quality and burial depth. From the perspectives of economy and safety, it is ensured that the sheath does not undergo large deformation under the action of soil pressure.

[0061] Optionally, in some embodiments, the rib plates 50 are arranged in a cross pattern along the first direction X and the third direction Z.

[0062] The cross - arranged rib plates 50 can increase the stiffness of the sheath in two directions and limit the bending deformation of the sheath in these two directions.

[0063] Optionally, as Figure 1 shown, in some embodiments, the first connecting member 11 and the second connecting member 21 are a snap - fit combination.

[0064] The sheath upper cover 20 is snap - connected to the sheath base 10 through the first connecting member 11 and the second connecting member 21. The snap - connection process is relatively simple and convenient for combination. The sheath upper cover 20 and the sheath base 10 are connected vertically. Generally, the connection part will not be squeezed by the soil body, and the requirement for connection strength is not high. A convenient and fast snap - connection can be adopted to reduce the construction volume.

[0065] Optionally, in some embodiments, the third connecting member 40 is a plate member perpendicular to the second direction Y and extends away from the cavity. The third connecting members 40 of two adjacent tie rod sheath units 100 overlap and are connected and fixed by bolts.

[0066] Multiple tie rod sheath units 100 are axially connected into a whole through the third connecting member 40. The soil pressure acts vertically. The third connecting member 40 will directly receive the extrusion from the soil body. If the connection strength is insufficient, the third connecting member 40 will deform or even break under the soil pressure, and the damaged sheath will directly squeeze onto the tie rod, causing damage to the tie rod. Therefore, a bolt connection with relatively high strength should be adopted at the third connection. Calculate according to the geological conditions, burial depth, and design service life, and select bolts with sufficient strength.

[0067] Optionally, in some embodiments, the sheath cover 20 includes a first block 23 and a second block 24, the first block 23 is provided with a first block connector 25 on a surface perpendicular to the third direction Z, the second block 24 is provided with a second block connector 26 on a surface perpendicular to the third direction Z, the first block 23 and the second block 24 are connected into a whole by the first block connector 25 and the second block connector 26, and cooperate to form a groove extending along the first direction X.

[0068] Optionally, the first block connecting member 25 and the second block connecting member 26 are plates perpendicular to the second direction Y, extending to a side away from the cavity 30 , and connected and fixed by bolts.

[0069] After the tie rod is installed, first place the sheath base 10 under the tie rod, adjust the position and elevation, and extend the sheath base 10 section by section through the third connecting piece 40 to cover the entire length range of the tie rod; connect the first block 23 and the second block 24 through the first block connecting piece 25 and the second block connecting piece 26 to form the sheath cover 20, and then connect the sheath cover 20 to the sheath base 10 through the first connecting piece 11 and the second connecting piece 21. After the connection, the sheath cover 20 is axially connected through the third connecting piece 40 to complete the installation of the tie rod sheath, covering the length range of the tie rod to protect the tie rod.

[0070] In addition, if Figure 8 As shown, an embodiment of the utility model further provides an anchor structure, wherein a tie rod is inserted into a cavity of a tie rod sheath of the anchor structure in any of the above embodiments, the tie rod sheath is placed on the soil, and both ends of the tie rod are fixedly connected to the wall.

[0071] Optionally, in some embodiments, the tie rod assembly includes a tie rod connector 400 and at least two tie rods; the tie rod sheath includes at least two first-type sheath units 200 and at least one second-type sheath unit 300; the tie rod connector 400 connects two adjacent tie rods, the tie rod connector 400 is arranged in the cavity of the second-type sheath unit 300, and the two first-type sheath units 200 are respectively connected to the two ends of the second-type sheath unit 300 through the third connector 40.

[0072] Since the tie rod sheath in this application adopts a segmented design, the installation is relatively flexible. It can be installed after the tie rod is installed, and the number of tie rod sheaths can be adjusted according to the actual length of the tie rod to adapt to tie rods of different lengths. During the service period, due to the large construction settlement and post-construction settlement in the backfill soil and soft soil strata, the sheath buried in the soil will settle with the settlement of the soil. Since the height of the inner cavity of the sheath has reserved the soil settlement amount, the tie rod will not be driven to move when the sheath settles, and the tie rod remains in the initial position, thus playing the role of protecting the tie rod and preventing the anchor structure from being damaged by the soil settlement, and maintaining the stress state of the anchor system under the design conditions for a long time.

[0073] It should be noted that the various embodiments in this specification are all described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts among the various embodiments can be referred to each other.

[0074] Although the optional embodiments of the embodiments of this application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the optional embodiments and all changes and modifications falling within the scope of the embodiments of this application.

[0075] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that an article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such article or terminal device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the article or terminal device including the element.

[0076] The technical solutions provided by this application have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of this application. At the same time, for those of ordinary skill in the art, based on the principle and implementation manner of this application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. A pull rod sheath of an anchor pull structure, having a first direction (X), a second direction (Y) and a third direction (Z) intersecting each other, characterized in that: It comprises at least one pull rod sheath unit (100); the pull rod sheath unit (100) comprises: a sheath base (10) and a sheath upper cover (20); The sheath base (10) comprises a first groove (12) extending along the first direction (X), and a first connecting member (11) is provided on a side wall of the first groove at a position away from the bottom of the first groove; The sheath upper cover (20) comprises a second groove (22) extending along the first direction (X), and a second connecting member (21) is provided on a side wall of the second groove at a position away from the bottom of the second groove; The sheath base (10) and the sheath upper cover (20) are connected via the first connecting member (11) and the second connecting member (21); the first groove (12) and the second groove (22) cooperate to form a cavity (30); the cavity (30) is used for the pull rod to pass through along the first direction (X); and the pull rod sheath moves relative to the pull rod along the third direction (Z); The two ends of the pull rod sheath unit (100) that are arranged opposite to each other along the first direction (X) are provided with third connecting members (40), and two adjacent pull rod sheath units (100) are connected via the third connecting members (40).

2. The pull rod sheath of the anchor structure according to claim 1, characterized in that: The pull rod sheath unit (100) comprises: a first type sheath unit (200), wherein the first type sheath unit (200) comprises a first base (210) and a first upper cover (220); The first base (210) comprises the first groove (12) extending along the first direction (X), and the first connecting member (11) is arranged on the side wall of the first groove at a position away from the bottom of the first groove; The first upper cover (220) comprises the second groove (22) extending along the first direction (X), and the second connecting member (21) is provided on the side wall of the second groove at a position away from the bottom of the second groove; The first base (210) and the first upper cover (220) are connected via the first connecting member (11) and the second connecting member (21); the first groove (12) and the second groove (22) cooperate to form a cavity (30); the cavity (30) is used for the pull rod to pass through along the first direction (X); and the pull rod sheath moves relative to the pull rod along the third direction (Z); The distance between the two ends of the cavity that are oppositely arranged along the second direction (Y) is the cavity width d, and d is greater than the diameter of the pull rod; The third connecting members (40) are provided at two opposite ends of the pull rod sheath unit (100) arranged along the first direction (X), and two adjacent pull rod sheath units (100) are connected via the third connecting members (40).

3. The pull rod sheath of the anchor structure according to claim 2, characterized in that: The pull rod sheath unit (100) further comprises: a second type sheath unit (300), wherein the second type sheath unit (300) comprises a second base (310) and a second upper cover (320); The second base (310) comprises the first groove (12) extending along the first direction (X), and the first connecting member (11) is arranged on the side wall of the first groove at a position away from the bottom of the first groove; The second upper cover (320) comprises the second groove (22) extending along the first direction (X), and the second connecting member (21) is provided on the side wall of the second groove at a position away from the bottom of the second groove; The second base (310) and the second upper cover (320) are connected via the first connecting member (11) and the second connecting member (21); the first groove (12) and the second groove (22) cooperate to form a cavity (30); the cavity (30) is used for the pull rod to pass through along the first direction (X); and the pull rod sheath moves relative to the pull rod along the third direction (Z); The cavity (30) comprises a first cavity (31) and a second cavity (32), the distance between two opposite ends of the first cavity (31) arranged along the second direction (Y) is a cavity width d1, d1 is greater than the diameter of the pull rod, the distance between two opposite ends of the second cavity (32) arranged along the second direction (Y) is a cavity width d2, d2 is greater than the width of the pull rod connector (400), and d2>d1=d1; Two ends of the second cavity (32) that are oppositely arranged along the first direction (X) are connected to the first cavity (31); The tie rod sheath unit (100) comprises at least two of the first type sheath units (200) and at least one of the second type sheath units (300); two ends of the tie rod sheath unit (100) that are relatively arranged along the first direction (X) are provided with third connecting members (40); and the two adjacent tie rod sheath units (100) are connected via the third connecting member (40).

4. The pull rod sheath of the anchor structure according to claim 1, characterized in that: A rib plate (50) is provided on the surface of the pull rod sheath away from the cavity (30).

5. The pull rod sheath of the anchor structure according to claim 1, characterized in that: The first connecting member (11) and the second connecting member (21) are a snap-fit ​​assembly.

6. The pull rod sheath of the anchor structure according to claim 1, characterized in that: The third connecting member (40) is a plate member perpendicular to the second direction (Y) and extends to a side away from the cavity. The third connecting members (40) of two adjacent pull rod sheath units (100) are overlapped and connected and fixed by bolts.

7. The pull rod sheath of the anchor structure according to claim 1, characterized in that: The sheath upper cover (20) comprises a first block (23) and a second block (24); a first block connector (25) is provided on a surface of the first block (23) perpendicular to the third direction (Z); a second block connector (26) is provided on a surface of the second block (24) perpendicular to the third direction (Z); the first block (23) and the second block (24) are connected via the first block connector (25) and the second block connector (26) to cooperate to form the second groove (22) extending along the first direction (X).

8. The pull rod sheath of the anchor structure according to claim 7, characterized in that: The first block connecting member (25) and the second block connecting member (26) are plates perpendicular to the second direction (Y), extending to a side away from the cavity (30), and connected and fixed by bolts.

9. An anchoring structure, characterized in that: The tie rod is inserted into the cavity (30) of the tie rod sheath of the anchor structure according to any one of claims 1 to 8, the tie rod sheath is placed on the soil, and both ends of the tie rod are fixedly connected to the wall.

10. The anchor structure according to claim 9, characterized in that: The pull rod assembly comprises a pull rod connector (400) and at least two pull rods; the pull rod sheath comprises at least two first type sheath units (200) and at least one second type sheath unit (300); The tie rod connector (400) connects two adjacent tie rods, and the tie rod connector (400) is arranged in the cavity of the second type sheath unit (300). The two first type sheath units (200) are respectively connected to the two ends of the second type sheath unit (300) through the third connector (40).

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