Foundation pit supporting anchor cable with expansion body for enhancing anchoring

Abstract

The utility model discloses a foundation pit supporting anchor cable with an expansion body for enhancing anchoring, which comprises a guide cap and a plurality of steel twisted ropes, one end of the guide cap is connected with the plurality of steel twisted ropes, a grouting pipe is arranged in the middle of the plurality of steel twisted ropes, and one end of the grouting pipe is connected with the guide cap; the steel strand rope and the grouting pipe are sleeved with an expansion assembly, the expansion assembly comprises a high-elasticity-modulus framework and an expansion layer, the expansion layer is arranged in a hollow mode, and the high-elasticity-modulus framework is wrapped by the expansion layer; the end, away from the guide cap, of the steel strand rope is connected with a fixing assembly, and the fixing assembly is used for fixing the end of the steel strand rope. The expansion assembly is arranged on the steel strand rope in a sleeving mode, normal installation of the anchor cable is not affected, the expansion assembly can expand when meeting water, meanwhile, the expansion assembly is stably connected with the steel strand rope, the anchor cable can be stably supported, and then the anchoring effect of the anchor cable is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to anchor cable technical field, concretely is a kind of foundation pit support anchor cable with expansion body reinforced anchoring. BACKGROUND

[0002] In foundation pit support engineering, anchor cable is used as main retaining structure, and its anchoring performance directly affects the stability of support system. Traditional foundation pit support anchor cable usually uses ordinary steel strand or reinforcing steel as anchoring main body, and realizes anchoring by forming friction with surrounding soil through grouting body.

[0003] For example, the utility model patent with the publication number CN217712626U discloses an expansion type grouting anchor cable for support reinforcement, which comprises a base, a threaded rod is rotatably connected to the middle of the top end of the base, a first support rod is rotatably connected to the outer wall of the base, a threaded sleeve is threadedly connected to the top of the threaded rod, a moving seat is rotatably connected to the outer wall of the threaded sleeve, a second support rod is rotatably connected to the outer wall of the moving seat, a wall-breaking block is fixed to one side of the top end of the first support rod, and a sleeve rod is fixed to the top of the moving seat.

[0004] The above-mentioned patent provides an expansion type grouting support anchor cable. The expansion mechanism of this support anchor cable needs to be used by rotating the threaded rod. In actual use, the anchor cable is made of multiple steel strands. Although the steel strands have high tensile strength, they are prone to bending. Therefore, it is not convenient to rotate the threaded rod by the anchor cable. Therefore, the existing expansion structure is not convenient to use on the anchor cable made of steel strands, and it is not convenient to expand and fix the anchor cable made of steel strands. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a foundation pit support anchor cable with expansion body reinforced anchoring, which aims at improving the problem that the existing expansion structure for anchor cable is not convenient to use on the anchor cable made of steel strands and is not convenient to expand and fix the anchor cable made of steel strands.

[0006] The utility model is implemented as follows:

[0007] A foundation pit support anchor cable with expansion body reinforced anchoring, comprising a guide cap and a steel strand, the guide cap is connected with multiple steel strands at one end, and a grouting pipe is arranged in the middle of the multiple steel strands, and one end of the grouting pipe is connected with the guide cap; an expansion assembly is sleeved on the steel strand and the grouting pipe, the expansion assembly comprises a high-elasticity modulus framework and an expansion layer, the expansion layer is hollow, and the expansion layer wraps the high-elasticity modulus framework; a fixing assembly is connected with the end of the steel strand away from the guide cap, and the fixing assembly is used for fixing the end of the steel strand.

[0008] Preferably, the guide cap is hollow inside, and the side of the guide cap is provided with a plurality of leakage holes, one end of the guide cap is provided in a tapered structure, and the other end of the guide cap is provided with a spiral rib.

[0009] Preferably, the guide cap is hollow inside, and the side of the guide cap is provided with a plurality of leakage holes, one end of the guide cap is provided in a tapered structure, and the other end of the guide cap is provided with a spiral rib.

[0010] Preferably, the high-elasticity modulus framework comprises a plurality of longitudinal ribs and a plurality of sleeves, the sleeves are sleeved outside the longitudinal ribs, and the sleeves and the longitudinal ribs are connected to each other, and the longitudinal ribs and the sleeves are both made of glass fiber reinforced plastic.

[0011] Preferably, the longitudinal ribs are both connected with splicing plates, the splicing plates are connected with supporting end plates, the supporting end plates are provided with a plurality of sleeve holes, and the supporting end plates and the splicing plates are used to be sleeved on the strand rope and the grouting pipe to support the strand rope and the grouting pipe.

[0012] Preferably, the expansion layer is made of bentonite and expands when meeting water, and the expansion layer is provided with a through hole in the middle portion to ensure that the expansion assembly is smoothly sleeved on the strand rope and does not affect subsequent grouting.

[0013] Preferably, the fixing assembly comprises a pressing plate and a plurality of extrusion joints, the pressing plate is sleeved on the strand rope, the plurality of extrusion joints are respectively sleeved on each strand rope, and each extrusion joint is inserted on the pressing plate.

[0014] Preferably, the pressing plate is uniformly provided with a plurality of through holes, the extrusion joint is in a tapered structure, the extrusion joint is provided with a connecting hole in the middle portion, and the side of the extrusion joint is uniformly provided with a plurality of contraction joints.

[0015] Preferably, the fixing assembly is connected on the strand rope, and the fixing assembly is pressed on the backing plate.

[0016] Preferably, the backing plate is provided with a bolt hole at each corner, the middle portion of the backing plate is provided with a pressing table, the top surface of the pressing table is inclined, the pressing table is uniformly provided with a plurality of mounting holes, and the strand rope passes through the backing plate from the mounting holes.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The utility model discloses a steel strand is set with expansion assembly, and expansion assembly sets on the steel strand does not influence the normal installation of anchor cable, and expansion assembly meets water and expands, and expansion assembly is connected with the steel strand stably, can play the stable support effect to anchor cable, and then enhances the anchoring effect of anchor cable, and expansion assembly can move back and forth on the steel strand before fixing, and the position of expansion assembly is adjusted conveniently, and the flexible use of expansion assembly is convenient.

[0019] 2. The utility model discloses a setting pad, and the pad can enhance the support to anchor cable end fixing assembly, to guarantee the enough stability of anchor cable end. SHEET

[0020] Figure 1 It is the whole structure schematic drawing of the utility model;

[0021] Figure 2 It is the structure schematic drawing of the utility model guiding cap;

[0022] Figure 3 It is the structure schematic drawing of the utility model expansion assembly;

[0023] Figure 4 It is the structure schematic drawing of the utility model high elasticity modulus skeleton;

[0024] Figure 5 It is the structure schematic drawing of the utility model expansion layer;

[0025] Figure 6 It is the structure schematic drawing of the utility model fixed component;

[0026] Figure 7 It is the structure schematic drawing of the utility model pad.

[0027] In the drawing: 1, guiding cap;11, leakage hole;12, connecting plate;13, first connecting sleeve pipe;14, second connecting sleeve pipe;15, spiral rib;2, steel strand;3, grouting pipe;4, expansion assembly;41, high elasticity modulus skeleton;411, support end plate;412, splicing plate;413, sleeve hole;414, longitudinal rib;415, sleeve ring;42, expansion layer;421, through -hole;5, fixed component;51, pressing plate;511, perforation;52, extrusion joint;521, connecting hole;522, shrinkage joint;6, pad;61, bolt hole;62, pressure platform;63, mounting hole. CONCRETE EMBODIMENT

[0028] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can be indirectly connected through intermediate medium, can be the communication of two elements or the interaction of two elements. For ordinary skilled in the art, the above terms can be understood according to the specific meaning of the utility model.

[0029] The following further illustrates with the specific embodiments and the accompanying drawings:

[0030] Embodiment 1

[0031] As Figure 1 And Figure 3 As shown in a kind of anchoring of pit support anchor cable with expansion body enhancement, including guide cap 1 and steel strand 2, guide cap 1 one end is connected with multiple steel strands 2, guide cap 1 cooperates steel strand 2 to be convenient for steel strand 2 to be inserted into hole smoothly, it is convenient to install entire anchor cable. And multiple steel strands 2 middle part is equipped with grouting pipe 3, grouting pipe 3 one end is connected with guide cap 1;Grouting pipe 3 is convenient for grouting in the middle part of anchor cable, guarantees the effectiveness of grouting, improves the effect of anchoring. Steel strand 2 and grouting pipe 3 are equipped with expansion assembly 4, expansion assembly 4 includes high-elasticity modulus skeleton 41 and expansion layer 42, expansion layer 42 is hollowly arranged, and expansion layer 42 is wrapped high-elasticity modulus skeleton 41. Expansion assembly 4 can play good supporting effect to steel strand 2, and expansion assembly 4 swells when meeting water, can enhance the adhesion of anchor cable and soil, improves the effect of anchor cable anchoring. Steel strand 2 is connected with fixed assembly 5 away from the one end of guide cap 1, and fixed assembly 5 is used to fix the end of steel strand 2.

[0032] As Figure 2As shown, the inside of the guide cap 1 is hollow, and the side of the guide cap 1 is provided with a plurality of leakage holes 11. The guide cap 1 cooperates with the leakage holes 11 to facilitate the mortar into the guide cap 1, and to ensure that the mortar can fill the inside of the guide cap 1, so that the anchor cable cooperates with the mortar to stably support the foundation pit. One end of the guide cap 1 is provided in a conical structure, which facilitates the guide cap 1 to be smoothly inserted into the inside of the side of the foundation pit. The other end of the guide cap 1 is provided with a spiral rib 15, which ensures that the guide cap 1 is stable in the inside of the foundation pit after the mortar is solidified. The inside of the guide cap 1 near one end of the spiral rib 15 is provided with a connecting plate 12, which is convenient for connecting with the steel strand 2 and the grouting pipe 3. The middle of the connecting plate 12 is provided with a second connecting sleeve 14, which is convenient for connecting with the grouting pipe 3, and ensures that the grouting pipe 3 is stably connected with the connecting plate 12. The connecting plate 12 is uniformly provided with a plurality of first connecting sleeves 13 around the second connecting sleeve 14, which is convenient for connecting with the steel strand 2, and facilitates the steel strand 2 and the guide cap 1 to be welded together, and ensures that the steel strand 2 and the guide cap 1 are stably connected.

[0033] As shown in the figure, Figure 4 The high-elasticity modulus skeleton 41 includes a plurality of longitudinal reinforcement 414 and a plurality of sleeves 415, the longitudinal reinforcement 414 is sleeved outside the longitudinal reinforcement 414, and the sleeve 415 and the longitudinal reinforcement 414 are connected with each other, and the longitudinal reinforcement 414 and the sleeve 415 are made of glass fiber reinforced plastic; the high-elasticity modulus skeleton 41 with this structure has high strength, high elastic modulus and corrosion resistance, and can cooperate with the expansion layer 42 to work together to ensure that the expansion assembly 4 still has good supporting strength after expansion. The two ends of the longitudinal reinforcement 414 are connected with the splicing plate 412, which is convenient for connecting with the longitudinal reinforcement 414. The splicing plate 412 is convenient for the longitudinal reinforcement 414 to indirectly connect with the support end plate 411. The support end plate 411 is usually made of steel, while the longitudinal reinforcement 414 is made of glass fiber reinforced plastic support. The longitudinal reinforcement 414 cannot be connected with the support end plate 411 smoothly, so the splicing plate 412 is provided. The splicing plate 412 can be supported by glass fiber reinforced plastic, and then the splicing plate 412 and the support end plate 411 are bonded by glue, so as to ensure the stability of the whole expansion assembly 4. The splicing plate 412 is connected with the support end plate 411, and the support end plate 411 is provided with a plurality of sleeve holes 413. The support end plate 411 cooperates with the splicing plate 412 to be sleeved on the steel strand 2 and the grouting pipe 3, so as to support the steel strand 2 and the grouting pipe 3.

[0034] As shown in the figure, Figure 5 The expansion layer 42 is made of bentonite and expands when it comes into contact with water. The expansion layer 42 is provided with a through hole 421 in the middle, which is used to ensure that the expansion assembly 4 is smoothly sleeved on the steel strand 2, and at the same time does not affect the subsequent grouting.

[0035] As shown in the figure, Figure 6As shown, the fixing assembly 5 includes a pressing plate 51 and a plurality of extrusion joints 52, the pressing plate 51 is sleeved on the steel strand 2, the plurality of extrusion joints 52 are respectively sleeved on each steel strand 2, and each extrusion joint 52 is inserted on the pressing plate 51; this structure is convenient for extruding and fixing the steel strand 2 on the pressing plate 51 through the extrusion joint 52, and the pressing plate 51 is pressed against the side of the foundation pit, so as to achieve the purpose of fixing the end of the steel strand 2. The pressing plate 51 is uniformly provided with a plurality of through holes 511, and the through holes 511 are convenient for the steel strand 2 to pass through the pressing plate 51. The extrusion joint 52 is in a tapered structure, and a connecting hole 521 is arranged in the middle of the extrusion joint 52, and the connecting hole 521 is convenient for the extrusion joint 52 to be sleeved on the steel strand 2. The side of the extrusion joint 52 is uniformly provided with a plurality of contraction joints 522, and the contraction joints 522 are convenient for being extruded and contracted, so that the extrusion joint 52 is stably pressed on the steel strand 2.

[0036] Example 2

[0037] As Figure 1 and Figure 3 As shown, a foundation pit support anchor with expansion body reinforced anchoring includes a guide cap 1 and a steel strand 2, the guide cap 1 is connected with a plurality of steel strands 2 at one end, and the guide cap 1 cooperates with the steel strand 2 to facilitate the steel strand 2 to be smoothly inserted into a hole, and facilitates the installation of the entire anchor. The middle of the plurality of steel strands 2 is provided with a grouting pipe 3, and one end of the grouting pipe 3 is connected with the guide cap 1; the grouting pipe 3 is convenient for grouting in the middle of the anchor, ensures the effectiveness of grouting, and improves the anchoring effect. The steel strand 2 and the grouting pipe 3 are sleeved with an expansion assembly 4, the expansion assembly 4 includes a high-elasticity modulus skeleton 41 and an expansion layer 42, the expansion layer 42 is hollowly arranged, and the expansion layer 42 wraps the high-elasticity modulus skeleton 41; the expansion assembly 4 can play a good supporting role on the steel strand 2, and the expansion assembly 4 expands when encountering water, which can enhance the adhesion between the anchor and the soil, and improve the anchoring effect of the anchor. The end of the steel strand 2 away from the guide cap 1 is connected with a fixing assembly 5, and the fixing assembly 5 is used for fixing the end of the steel strand 2.

[0038] As Figure 2As shown, the inside of the guide cap 1 is hollow, and the side of the guide cap 1 is provided with a plurality of leakage holes 11. The guide cap 1 cooperates with the leakage holes 11 to facilitate the mortar into the guide cap 1, and to ensure that the mortar can fill the inside of the guide cap 1, so that the anchor cable cooperates with the mortar to stably support the foundation pit. One end of the guide cap 1 is provided in a conical structure, which facilitates the guide cap 1 to be smoothly inserted into the inside of the side of the foundation pit. The other end of the guide cap 1 is provided with a spiral rib 15, which ensures that the guide cap 1 is stable in the inside of the foundation pit after the mortar is solidified. The inside of the guide cap 1 is provided with a connecting plate 12 near one end of the spiral rib 15. The connecting plate 12 is convenient for connecting with the steel strand 2 and the grouting pipe 3. The middle of the connecting plate 12 is provided with a second connecting sleeve 14, which is convenient for connecting with the grouting pipe 3, and ensures that the grouting pipe 3 is stably connected with the connecting plate 12. The connecting plate 12 is uniformly provided with a plurality of first connecting sleeves 13 around the second connecting sleeve 14. The first connecting sleeve 13 is convenient for connecting with the steel strand 2, and facilitates the steel strand 2 and the guide cap 1 to be welded together, and ensures that the steel strand 2 and the guide cap 1 are stably connected.

[0039] As shown in Figure 4 The high-elasticity modulus skeleton 41 includes a plurality of longitudinal reinforcement 414 and a plurality of sleeves 415. The longitudinal reinforcement 414 is sleeved outside the longitudinal reinforcement 414, and the sleeve 415 and the longitudinal reinforcement 414 are connected with each other. The longitudinal reinforcement 414 and the sleeve 415 are both made of glass fiber reinforced plastic. The high-elasticity modulus skeleton 41 with such structure has high strength, high elastic modulus and corrosion resistance, and can work cooperatively with the expansion layer 42 to ensure that the expansion assembly 4 still has good supporting strength after expansion. The longitudinal reinforcement 414 is connected with a splicing plate 412 at both ends. The splicing plate 412 is convenient for connecting with the longitudinal reinforcement 414, and the splicing plate 412 is convenient for indirectly connecting the longitudinal reinforcement 414 with the support end plate 411. The support end plate 411 is usually made of steel, while the longitudinal reinforcement 414 is made of glass fiber reinforced plastic. Therefore, the splicing plate 412 is provided to connect the longitudinal reinforcement 414 with the support end plate 411. The splicing plate 412 can be made of glass fiber reinforced plastic, and then the splicing plate 412 and the support end plate 411 are bonded by glue, so as to ensure the stability of the entire expansion assembly 4. The splicing plate 412 is connected with the support end plate 411, and the support end plate 411 is provided with a plurality of sleeve holes 413. The support end plate 411 cooperates with the splicing plate 412 to be sleeved on the steel strand 2 and the grouting pipe 3, so as to support the steel strand 2 and the grouting pipe 3.

[0040] As shown in Figure 5 The expansion layer 42 is made of bentonite and expands when it comes into contact with water. The expansion layer 42 is provided with a through hole 421 in the middle, which is used to ensure that the expansion assembly 4 is smoothly sleeved on the steel strand 2, and does not affect the subsequent grouting.

[0041] As shown in Figure 6As shown, the fixing assembly 5 includes a pressing plate 51 and a plurality of extrusion joints 52, the pressing plate 51 is sleeved on the steel strand 2, the plurality of extrusion joints 52 are respectively sleeved on each steel strand 2, and each extrusion joint 52 is inserted on the pressing plate 51; such structure is convenient for extruding and fixing the steel strand 2 on the pressing plate 51 through the extrusion joint 52, and the pressing plate 51 is pressed on the side of the foundation pit, so as to achieve the purpose of fixing the end of the steel strand 2. The pressing plate 51 is uniformly provided with a plurality of through holes 511 for the steel strand 2 to pass through the pressing plate 51. The extrusion joint 52 is in a tapered structure, and a connecting hole 521 is arranged in the middle of the extrusion joint 52, which is convenient for the extrusion joint 52 to be sleeved on the steel strand 2. The side of the extrusion joint 52 is uniformly provided with a plurality of contraction joints 522, which is convenient for being extruded and contracted, so that the extrusion joint 52 is stably pressed on the steel strand 2.

[0042] As shown in the figure, Figure 1 It also includes a backing plate 6, the backing plate 6 is sleeved on the steel strand 2, the fixing assembly 5 is connected on the steel strand 2, and the fixing assembly 5 is pressed on the backing plate 6; such structure is convenient for supporting the fixing assembly 5 through the backing plate 6, ensuring the stable fixing of the end of the steel strand 2, and also convenient for subsequent prestressed construction of the anchor cable.

[0043] As shown in the figure, Figure 7 The backing plate 6 is provided with a bolt hole 61 at the corner, which is convenient for fixing the position of the backing plate 6, ensuring the stable use of the backing plate 6. The middle of the backing plate 6 is provided with a pressing table 62, the top surface of the pressing table 62 is inclined, and the pressing table 62 is uniformly provided with a plurality of mounting holes 63. The steel strand 2 passes through the mounting hole 63 to pass through the backing plate 6. The pressing table 62 is convenient for cooperating with the fixing assembly 5 and the inclined steel strand 2, and is convenient for stably supporting and fixing the end of the steel strand 2.

[0044] Working principle: in use, first, the fixing assembly is sleeved on the steel strand 2 and the grouting pipe 3, so that the steel strand 2 and the grouting pipe 3 are stably supported, then the guide cap 1 and the steel strand 2 are connected by welding, ensuring that the guide cap 1 stably cooperates with the steel strand 2. Then move the expansion assembly 4 on the steel strand 2, so that the position of the expansion assembly 4 meets the use requirement, then weld the support end plate 411 of the expansion assembly 4 with the steel strand 2. Then drill holes on the foundation pit, then insert the anchor cable into the hole, then grout into the hole, after grouting into the hole is completed, use the grouting pipe 3 to grout again, when grouting is completed, install the backing plate 6, then perform prestressed construction, after the prestressed construction is completed, use the fixing assembly 5 to fix the end of the anchor cable.

[0045] Compared with the prior art, the application has the advantages that the expansion assembly 4 is sleeved on the steel strand 2, which does not affect the normal installation of the anchor cable, the expansion assembly 4 expands when meeting water, the expansion assembly 4 is stably connected with the steel strand 2, can stably support the anchor cable, and further enhances the anchoring effect of the anchor cable; the expansion assembly 4 can move back and forth on the steel strand 2 before being fixed, which facilitates the adjustment of the position of the expansion assembly 4 and the flexible use of the expansion assembly 4.

[0046] The preferred embodiments of the utility model have been described above only, and are not used to limit the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A foundation pit support anchor with expansion body reinforced anchoring, comprising a guide cap (1) and a steel strand rope (2), characterized in that, The guide cap (1) is connected with a plurality of steel strands (2) at one end, and the middle of the plurality of steel strands (2) is provided with a grouting pipe (3), one end of the grouting pipe (3) is connected with the guide cap (1); the steel strands (2) and the grouting pipe (3) are sleeved with an expansion assembly (4), the expansion assembly (4) comprises a high-elasticity modulus framework (41) and an expansion layer (42), the expansion layer (42) is hollowly arranged, and the expansion layer (42) wraps the high-elasticity modulus framework (41); one end of the steel strands (2) away from the guide cap (1) is connected with a fixing assembly (5), and the fixing assembly (5) is used for fixing the end of the steel strands (2).

2. The pit supporting anchor cable with expansion body reinforced anchoring according to claim 1, characterized in that, The inside of the guide cap (1) is hollowly arranged, and a plurality of leakage holes (11) are arranged on the side of the guide cap (1); one end of the guide cap (1) is provided in a tapered structure, and the other end of the guide cap (1) is provided with a spiral rib (15).

3. The pit supporting anchor cable with expansion body reinforced anchoring according to claim 2, characterized in that, The inside of the guide cap (1) is hollowly arranged, and a plurality of leakage holes (11) are arranged on the side of the guide cap (1); one end of the guide cap (1) is provided in a tapered structure, and the other end of the guide cap (1) is provided with a spiral rib (15).

4. The expanded body reinforced anchored foundation pit support cable according to claim 1, characterized in that, The high-elasticity modulus framework (41) comprises a plurality of longitudinal reinforcements (414) and a plurality of sleeves (415), the longitudinal reinforcement (414) is sleeved with the sleeve (415) outside the longitudinal reinforcement (414), and the sleeve (415) and the longitudinal reinforcement (414) are connected with each other, and the longitudinal reinforcement (414) and the sleeve (415) are both made of glass fiber reinforced plastic.

5. The expanded body reinforced anchored foundation pit support cable according to claim 4, characterized in that, The longitudinal reinforcement (414) is connected with a splicing plate (412) at both ends, the splicing plate (412) is connected with a supporting end plate (411), a plurality of sleeve holes (413) are arranged on the supporting end plate (411), and the supporting end plate (411) is used for sleeving on the steel strands (2) and the grouting pipe (3) in cooperation with the splicing plate (412) to support the steel strands (2) and the grouting pipe (3).

6. A foundation pit support anchor with inflatable body reinforced anchoring according to claim 5, characterized in that, The expansion layer (42) is made of bentonite and expands when water is encountered, and a through hole (421) is arranged in the middle of the expansion layer (42) to ensure that the expansion assembly (4) is smoothly sleeved on the steel strands (2) and does not affect subsequent grouting.

7. The expanded body reinforced anchored foundation pit support cable according to claim 1, characterized in that, The fixing assembly (5) comprises a pressing plate (51) and a plurality of extrusion joints (52), the pressing plate (51) is sleeved on the steel strands (2), and the plurality of extrusion joints (52) are respectively sleeved on each steel strand (2), and each extrusion joint (52) is inserted into the pressing plate (51).

8. The pit supporting anchor cable with expansion body reinforced anchoring according to claim 7, characterized in that, The pressing plate (51) is uniformly provided with a plurality of through holes (511), the extrusion joint (52) is in a tapered structure, the middle of the extrusion joint (52) is provided with a connecting hole (521), and the side of the extrusion joint (52) is uniformly provided with a plurality of contraction joints (522).

9. The expanded body reinforced anchored foundation pit support cable according to any one of claims 1-8, characterized in that, A backing plate (6) is further included, the backing plate (6) is sleeved on the steel strands (2), the fixing assembly (5) is connected on the steel strands (2), and the fixing assembly (5) is pressed on the backing plate (6).

10. The pit supporting anchor cable with expansion body reinforced anchoring according to claim 9, characterized in that, The gusset plate (6) is provided with bolt holes (61) at corners, and a pressing table (62) is arranged in the middle of the gusset plate (6), the top surface of the pressing table (62) is arranged in an inclined manner, and a plurality of mounting holes (63) are uniformly arranged on the pressing table (62), and the steel strand rope (2) passes through the gusset plate (6) from the mounting hole (63).

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