A vertical and horizontal bidirectional restrained anchor pile support structure and its construction method

Abstract

The present invention discloses a vertical and horizontal bidirectional constrained anchor pile support structure, comprising a plurality of anti-sliding piles arranged in parallel and vertically or obliquely, wherein a top beam and a corbel are arranged on the top of the anti-sliding piles, and a pile baffle is arranged between two adjacent anti-sliding piles, and a first anchor cable is arranged on the top of the corbel, and one end of the first anchor cable is connected to the top of the corbel through a first anchor head, and an anchor cable steering device is arranged on the corbel, and one end of the anchor cable steering device is fixedly connected to one end of the first anchor cable, and the other end of the anchor cable steering device is fixedly connected to one end of the second anchor cable, and the other end of the second anchor cable is fixed to the front side of the anti-sliding pile through the second anchor head. The anchor cable provides vertical and horizontal constraints through the anchor cable steering device, thereby realizing the support function of the anchor pile, and the fulcrum of the first anchor cable and the steering device acts on the corbel vertical load, providing an anti-overturning bending moment for the top of the anti-sliding pile, which can strictly control the deformation of the pile top, reduce the support cost, and improve the reliability of the support structure system, which is convenient for promotion and application.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit and slope support, and in particular to a vertical and horizontal bidirectional restrained anchor pile support structure and a construction method thereof. Background Art

[0002] The traditional anchor cable of the pile-slab retaining wall occupies a large horizontal space, which has led to a common phenomenon that most of the anchor cables are out of the project land red line. The later development and construction of the connected plots may damage the existing anchor cables, affecting the safety of the supported structure. Some local governments have explicitly stipulated that anchor cables and anchor rods are prohibited from exceeding the land red line. This paper proposes a vertical and horizontal bidirectional constrained anchor pile support structure, which realizes the support function of the anchor pile and avoids the uncontrollable risk of the anchor cable out of the red line in the later stage. The first anchor cable and the fulcrum of the steering device act on the vertical load of the bracket, providing anti-sliding and anti-overturning bending moment of the pile top. Compared with the cantilever pile, it can reduce the cross-sectional size and reinforcement, strictly control the deformation of the pile top, reduce the support cost, and improve the reliability of the support structure system. The support structure is easy to promote and apply. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a vertical, horizontal and bidirectional constrained anchor pile support structure and a construction method thereof, which fully utilizes the advantages of the anchor structure, a corbel is arranged on the pile top, a first anchor cable is arranged on the corbel, and a transverse anchor is provided through an anchor cable steering device with the first anchor cable as a fulcrum to achieve bidirectional constraint. The first anchor cable applies prestress to the corbel to provide an overturning moment on the pile top, and the second anchor cable provides a horizontal constraint force, which can strictly control the deformation of the pile top, and the pile spacing can be greatly increased, thereby improving the reliability of the support structure system.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a vertical and horizontal bidirectional constrained anchor pile support structure, comprising a plurality of anti-sliding piles arranged in parallel and vertically or obliquely, the lower ends of the anti-sliding piles are embedded in the stable bedrock below the bottom of the foundation pit, the tops of the anti-sliding piles are provided with top beams and corbels, the corbels are arranged on the rear side of the tops of the anti-sliding piles, and pile baffles are arranged between two adjacent anti-sliding piles, a first anchor cable is arranged on the top of one end of the corbel away from the anti-sliding pile, one end of the first anchor cable is fixedly connected to the top of the corbel through a first anchor head for applying a prestressed load to the corbel, the other end of the first anchor cable is an anchoring end for anchoring in the stable bedrock, an anchor cable steering device is provided on the corbel, one end of the anchor cable steering device is fixedly connected to one end of the first anchor cable provided with the first anchor head, and is arranged on the corbel with the first anchor head as a fulcrum, the other end of the anchor cable steering device is fixedly connected to one end of the second anchor cable, and the other end of the second anchor cable is fixed to the front side of the anti-sliding pile through the second anchor head.

[0005] The beneficial effects of the present invention are as follows: a corbel is arranged on the top of the anti-sliding pile, a first anchor cable is arranged at a designated position on the corbel, and a second anchor cable is arranged through an anchor cable steering device, so as to fully utilize the advantages of high strength and active force of the anchor cable, the first anchor cable provides a load to provide an anti-overturning moment for the top of the anti-sliding pile, and the second anchor cable provides a horizontal restraint load to balance the soil pressure behind some piles. The spacing between anti-sliding piles can be greatly increased, the number of anti-sliding piles is greatly reduced, the cross-section and reinforcement of the anti-sliding piles are greatly reduced, the cost and construction difficulty of foundation pit support are reduced, the construction period is shortened, and the reliability of the support structure system is improved.

[0006] Furthermore, the anchor cable steering device includes a saddle-shaped I-beam, an anchor 1, an anchor 2, a support and a steel pad, the outer side surface of the saddle-shaped I-beam is fixed to the top of the corbel through the support, the anchor 1 and the anchor 2 are respectively fixed at the two ends of the saddle-shaped I-beam, one end of the saddle-shaped I-beam is fixedly connected to one end of the first anchor cable through the anchor 2, the anchor 2 is arranged on the first anchor head, and the steel pad is arranged between the anchor 2 and the first anchor head; the other end of the saddle-shaped I-beam is fixedly connected to one end of the second anchor cable through the anchor 1.

[0007] The beneficial effect of adopting the above further solution is that the vertical and horizontal constraints on the top of the anti-sliding pile are simultaneously achieved through the anchor cable steering device.

[0008] Furthermore, the angle between the first anchor cable and the horizontal direction is α, wherein the value of α is 60°-80°.

[0009] The beneficial effects of adopting the above further solution are: (1) The larger the angle α is, the smaller the horizontal space occupied by the first anchor cable is, and the smaller the possibility of avoiding the first anchor cable from going out of the red line is. (2) The value of α is between 60° and 80°, which can not only increase a certain horizontal resistance but also provide an anti-overturning moment at the top of the anti-sliding pile.

[0010] Furthermore, the distance between the second anchor head and the top of the anti-sliding pile is greater than or equal to 1 m, and the angle between the second anchor cable and the horizontal direction is β, wherein the value of β is 10°-30°.

[0011] The beneficial effects of adopting the above further solution are: (1) the value of β is between 10° and 30°, and the second anchor cable provides a large horizontal tension; (2) the vertical load at the bottom of the pile is reduced, thereby reducing the bearing capacity requirements of the foundation.

[0012] Furthermore, the tension of the second anchor cable on the saddle-shaped I-beam is F1, the tension of the first anchor cable on the saddle-shaped I-beam is L2, the distance from the anchor one to the support is L1, and the distance from the anchor two to the support is L2, wherein F1 and F2 need to satisfy the relationship: F1*L1=F2*L2, F1*cosβ=F2*sinα.

[0013] The beneficial effects of adopting the above further scheme are: (1) by adjusting L1 and L2 to satisfy the equation F1*L1=F2*L2, the horizontal resultant force of the anchor cable steering device's fulcrum is made zero; (2) by satisfying the equation F1*cosβ=F2*sinα, the fulcrum bending moment of the anchor cable steering device is made zero; (3) by satisfying both equations at the same time, the fulcrum bending moment and horizontal resultant force of the anchor cable steering device are made zero, and only vertical load is present. The vertical load provides an overturning moment to the top of the anti-sliding pile, which is beneficial to the support structure.

[0014] Furthermore, the anti-slide piles and the corbels are both made of reinforced concrete or steel.

[0015] The beneficial effects of adopting the above further scheme are: (1) the anti-sliding piles and the corbels are made of reinforced concrete, which has good integrity and rigidity; (2) the anti-sliding piles and the corbels are made of steel structure, so the anchor cable conversion device and the corbels are easy to connect, and can be welded or bolted.

[0016] The present invention also discloses a construction method of a vertical and horizontal bidirectional restrained anchor pile support structure, comprising the following steps:

[0017] Step 1: construct anti-slide piles: determine the location of the anti-slide piles, and construct the anti-slide piles at the designated location by static pressure, drilling insertion, or drilling and pouring concrete;

[0018] Step 2: construct the pile top corbel: set the top beam and corbel between two adjacent anti-slip piles, and reserve a position on the corbel for setting the anchor cable steering device;

[0019] Step three, after the anti-sliding pile and the bracket reach the design strength, the first anchor cable and the first anchor head are constructed, after the mortar at the anchoring end of the first anchor cable reaches the design strength, the anchor cable steering device is installed on the bracket, and the end of the first anchor cable away from the anchoring end is fixedly connected to one end of the anchor cable steering device for tensioning and locking the first anchor cable, thereby increasing the overturning moment;

[0020] Step 4: excavate the soil in front of the pile to a depth of about 2-2.5 meters, construct the second anchor cable and the second anchor head, fix one end of the second anchor cable to the side wall in front of the anti-sliding pile through the second anchor head, and fix the other end of the second anchor cable to the other end of the anchor cable steering device, and tension and lock according to the designed load;

[0021] Step 5, repeat the above steps 1 to 4 until all the anti-slip piles, brackets, first anchor cables, second anchor cables, top beams and anchor cable steering devices are constructed;

[0022] Step six: excavate the soil in front of the pile according to the reverse method, excavate in sections and grades, construct retaining plates between piles, and complete the excavation of earth and stone in the foundation pit.

[0023] The beneficial effects of adopting the above scheme are: avoiding the defects of single-point constraint of traditional cantilever pile support structure and the disadvantage of large horizontal space occupied by anchor cables of conventional anchor pile support structure, a vertical and horizontal bidirectional constraint anchor pile support structure realizes multi-point constraint anchoring function, and occupies a small horizontal support space, thereby improving the overall stability and rigidity of the support structure, and improving the reliability of the retaining structure. Moreover, in foundation pit support, part of the anchor cables and anchor cable steering devices can be recycled after backfilling the outer wall of the basement, reflecting the concept of green support for foundation pits advocated by the country. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a connection diagram of the corbel, the anchor cable steering device, the first anchor cable and the second anchor cable in the present invention;

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Top line of foundation pit slope, 2. Bottom line of foundation pit slope, 3. Anti-slip piles, 4. Top beam, 5. Corbel, 6. Baffle between piles, 7. First anchor cable, 8. Second anchor cable, 9. Second anchor head, 10. First anchor head, 11. Anchor cable steering device, 12. Saddle-shaped I-beam, 13. Anchor one, 14. Anchor two, 15. Support, 16. Steel pad. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] Embodiment 1

[0030] like Figure 1As shown, the present embodiment comprises a plurality of anti-slip piles 3 arranged in parallel and vertically or obliquely. In the present embodiment, after the foundation pit is excavated, a foundation pit slope top line 1 and a foundation pit slope bottom line 2 are formed. The foundation pit slope top line 1 refers to the top line of the slope. The top of the anti-slip pile 3 is flush with the foundation pit slope top line 1. The foundation pit slope bottom line 2 refers to the bottom line of the anti-slip pile 3 leaking out of the ground, that is, the part of the anti-slip pile 3 below the foundation pit slope bottom line 2 is buried in the stable bedrock, and the part above the foundation pit slope bottom line 2 is exposed. The anti-slip pile 3 can be a steel pile, a reinforced concrete pile, or a steel concrete pile. The shape of the anti-slip pile 3 can be a rectangular pile, a circular pile, etc. The lower end of the anti-slip pile 3 is embedded in the stable bedrock below the bottom of the foundation pit. The top of the anti-slip pile 3 is provided with a top beam 4 and a corbel 5 (corbel is another name for a beam support. Its function is a support under the beam in a mixed structure. Its function is to disperse the force of the beam support and transmit it to the load-bearing object below. Because the concentrated force on one side is too large, the anti-slip pile 3 is not easy to be distorted. , which is easy to crush the wall. ), the corbel 5 can be a steel corbel, a reinforced concrete corbel, or a steel concrete corbel. The corbel 5 is arranged at the rear side of the top of the anti-sliding pile 3. A pile baffle 6 is arranged between two adjacent anti-sliding piles 3. A first anchor cable 7 is arranged at the top of one end of the corbel 5 away from the anti-sliding pile 3. One end of the first anchor cable 7 is fixedly connected to the top of the corbel 5 through a first anchor head 10 for applying a prestressed load to the corbel 5. The other end of the first anchor cable 7 is an anchoring end for anchoring in a stable bedrock. An anchor cable steering device 11 is arranged on the corbel 5. One end of the anchor cable steering device 11 is fixedly connected to one end of the first anchor cable 7 provided with the first anchor head 10, and is arranged on the corbel 5 with the first anchor head 10 as a fulcrum. The other end of the anchor cable steering device 11 is fixedly connected to one end of the second anchor cable 8. The other end of the second anchor cable 8 is fixed to the front side of the anti-sliding pile 3 through a second anchor head 9.

[0031] Preferably, in this embodiment, the anchor cable steering device 11 includes a saddle-shaped I-beam 12, an anchor 13, an anchor 2 14, a support 15 and a steel pad 16, the outer side surface of the saddle-shaped I-beam 12 is fixed to the top of the corbel 5 through the support 15, the anchor 13 and the anchor 2 14 are respectively fixed at the two ends of the saddle-shaped I-beam 12, one end of the saddle-shaped I-beam 12 is fixedly connected to one end of the first anchor cable 7 through the anchor 2 14, the anchor 2 14 is arranged on the first anchor head 10, and the steel pad 16 is arranged between the anchor 2 14 and the first anchor head 10; the other end of the saddle-shaped I-beam 12 is fixedly connected to one end of the second anchor cable 8 through the anchor 1 13. One end of the corbel 5 described in this embodiment is fixed to the top of the anti-sliding pile 3. In the actual installation process, the anchor hole reserved at the designated position of the corbel 5 is reserved by welding a steel pipe on the steel bar to ensure that the reserved hole does not shift during concrete pouring. The first anchor cable 7 is constructed, and the angle α between the first anchor cable 7 and the horizontal direction is 70°-80°. The technical effect of the angle α of 70°-80° is: (1) The larger the angle α, the smaller the horizontal space occupied by the anchor cable, and the smaller the possibility of avoiding the first anchor cable 7 from going out of the red line. (2) The value of α is between 60°-80°, which can not only improve a certain horizontal resistance but also provide an anti-overturning moment at the top of the anti-sliding pile 3. The first anchor head 10 is constructed. The first anchor head 10 is formed by implanting steel bars into the corbel 5. Three layers of steel mesh are added on the extrusion plane. The size and reinforcement of the anchor head are determined according to calculations. High-strength fine stone concrete is used for pouring. After the mortar of the anchoring section of the first anchor cable 7 reaches the design strength, the anchor cable steering device 11 is installed. The support 15 is fixed to the designated position on the corbel 5 with anchor bolts. A steel pad 16 is set between the anchor 14 and the first anchor head 10, and tensioning and locking are performed according to the design load. The cross-sectional size of the anchor cable steering device 11 is determined by design load calculation and is specially produced by the manufacturer. The soil in front of the pile is excavated, and the second anchor cable 8 is constructed. One end of the second anchor cable 8 is connected to the anchor 13 of the anchor cable steering device 11, and the other end is fixed to the outside of the anti-sliding pile 3. The anchor is tensioned and locked according to the design load requirements, wherein the angle β between the second anchor cable 8 and the horizontal direction is 20°-30°. The technical effects of the angle β of 20°-30° are: (1) When the value of β is between 10°-30°, the second anchor cable 8 provides a large horizontal tension; (2) the vertical load at the bottom of the anti-sliding pile 3 is reduced, thereby reducing the bearing capacity requirements of the foundation.α and β satisfy a specific algebraic relationship: F1*L1=F2*L2, F1*cosβ=F2*sinα. It should be noted that (1) by adjusting L1 and L2 to satisfy the equation F1*L1=F2*L2, the horizontal resultant force of the anchor cable steering device 11 is zero; (2) by satisfying the equation F1*cosβ=F2*sinα, the bending moment of the anchor cable steering device 11 is zero; (3) by satisfying both equations at the same time, the bending moment and horizontal resultant force of the anchor cable steering device 11 are zero, and there is only vertical load. The vertical load provides an overturning moment to the top of the anti-sliding pile 3, which is beneficial to the support structure. The inter-pile baffle 6 is constructed according to the reverse method. The vertical and horizontal constraints on the top of the anti-sliding pile 3 are simultaneously achieved through the anchor cable steering device 11.

[0032] The first anchor cable 7 and the support 15 of the anchor cable steering device 11 provided on the top corbel 5 of the anti-sliding pile 3 both act on the vertical load on the upper surface of the corbel 5, providing an anti-overturning moment at the top of the anti-sliding pile 3. The second anchor cable 8 provides a horizontal restraint force to balance the soil pressure behind part of the pile, so that the spacing between the anti-sliding piles 3 can be greatly increased, the number of anti-sliding piles 3 is greatly reduced, the cost and construction difficulty of foundation pit slope support are reduced, the deformation of the pile top is strictly controlled, and the reliability of the support structure system is improved.

[0033] This embodiment also discloses a construction method of a vertical-rotating and horizontal-bidirectional restrained anchor pile support structure as described above, comprising the following steps:

[0034] Step 1, constructing the anti-slip pile 3: determining the position of the anti-slip pile 3, and constructing the anti-slip pile 3 at the designated position by static pressure or drilling insertion or drilling and pouring concrete;

[0035] Step 2: constructing pile top corbels 5: setting a top beam 4 and corbels 5 between two adjacent anti-slip piles 3, and reserving a position on the corbels 5 for setting an anchor cable steering device 11;

[0036] Step 3: After the anti-sliding pile 3 and the corbel 5 reach the design strength, the first anchor cable 7 and the first anchor head 10 are constructed. After the mortar at the anchoring end of the first anchor cable 7 reaches the design strength, the anchor cable steering device 11 is installed on the corbel 5, and the end of the first anchor cable 7 away from the anchoring end is fixedly connected to one end of the anchor cable steering device 11 for tensioning and locking the first anchor cable 7 to increase the overturning moment.

[0037] Step 4: excavate the soil in front of the pile to a depth of about 2-2.5 meters, construct the second anchor cable 8 and the second anchor head 9, fix one end of the second anchor cable 8 to the side wall in front of the anti-sliding pile 3 through the second anchor head 9, and fix the other end of the second anchor cable 8 to the other end of the anchor cable steering device 11, and tension and lock according to the designed load;

[0038] Step 5, repeat the above steps 1 to 4 until all the anti-slip piles 3, the brackets 5, the first anchor cables 7, the second anchor cables 8, the top beams 4 and the anchor cable steering devices 11 are constructed;

[0039] Step six, excavate the soil in front of the pile according to the reverse method, excavate in sections and grades, construct the baffle 6 between the piles, and finally complete the excavation of the earth and stone of the foundation pit.

[0040] The first anchor cable 7 and the second anchor cable 8 set on the top bracket 5 of the anti-sliding pile 3 provide an anti-overturning moment at the pile top, and the second anchor cable 8 provides a horizontal restraint force to balance the soil pressure behind some piles, so that the spacing between the anti-sliding piles 3 can be greatly increased, the number of anti-sliding piles 3 is greatly reduced, the cost and construction difficulty of the foundation pit slope support are reduced, and the deformation of the pile top is strictly controlled, which improves the reliability of the support structure system. In addition, in the foundation pit support, some anchor cables and anchor cable steering devices can be recycled after the basement outer wall is backfilled, reflecting the concept of green foundation pit support advocated by the country.

[0041] In the description of the present invention, it is necessary to understand that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred system or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vertical and horizontal bidirectional restrained anchor pile support structure, characterized in that: The invention comprises a plurality of anti-sliding piles (3) arranged in parallel and vertically or obliquely, wherein the lower ends of the anti-sliding piles (3) are embedded in the stable bedrock below the bottom of the foundation pit, the tops of the anti-sliding piles (3) are provided with top beams (4) and corbels (5), the corbels (5) are arranged at the rear side of the tops of the anti-sliding piles (3), and inter-pile baffles (6) are arranged between two adjacent anti-sliding piles (3), and a first anchor cable (7) is arranged at the top of one end of the corbel (5) away from the anti-sliding pile (3), and one end of the first anchor cable (7) is fixedly connected to the top of the corbel (5) through a first anchor head (10) for fixing the corbel (5) applying a prestressed load, the other end of the first anchor cable (7) being an anchoring end for anchoring in a stable bedrock, the corbel (5) being provided with an anchor cable steering device (11), one end of the anchor cable steering device (11) being fixedly connected to one end of the first anchor cable (7) provided with the first anchor head (10), and being arranged on the corbel (5) with the first anchor head (10) as a fulcrum, the other end of the anchor cable steering device (11) being fixedly connected to one end of the second anchor cable (8), and the other end of the second anchor cable (8) being fixed to the front side of the anti-sliding pile (3) through the second anchor head (9); The anchor cable steering device (11) comprises a saddle-shaped I-beam (12), an anchor 1 (13), an anchor 2 (14), a support (15) and a steel pad (16); the outer side surface of the saddle-shaped I-beam (12) is fixedly arranged on the top of the corbel (5) through the support (15); the anchor 1 (13) and the anchor 2 (14) are respectively fixedly arranged at the two ends of the saddle-shaped I-beam (12); one end of the saddle-shaped I-beam (12) is fixedly connected to one end of the first anchor cable (7) through the anchor 2 (14); the anchor 2 (14) is arranged on the first anchor head (10); the steel pad (16) is arranged between the anchor 2 (14) and the first anchor head (10); the other end of the saddle-shaped I-beam (12) is fixedly connected to one end of the second anchor cable (8) through the anchor 1 (13).

2. A vertical and horizontal bidirectional restrained anchor pile support structure according to claim 1, characterized in that: The angle between the first anchor cable (7) and the horizontal direction is α, wherein the value of α is 60°-80°.

3. A vertical and horizontal bidirectional restrained anchor pile support structure according to claim 2, characterized in that: The distance between the second anchor head (9) and the top of the anti-sliding pile (3) is greater than or equal to 1 m, and the angle between the second anchor cable (8) and the horizontal direction is β, wherein the value of β is 10°-30°.

4. A vertical and horizontal bidirectional restrained anchor pile support structure according to claim 3, characterized in that: The tension of the second anchor cable (8) on the saddle-shaped I-beam (12) is F1, the tension of the first anchor cable (7) on the saddle-shaped I-beam (12) is L2, the distance from the anchor 1 (13) to the support (15) is L1, and the distance from the anchor 2 (14) to the support is L2, wherein F1 and F2 need to satisfy the relationship: F1*L1=F2*L2, F1*cosβ=F2*sinα.

5. A vertical rotation and horizontal bidirectional restrained anchor pile support structure according to any one of claims 1 to 4, characterized in that: The anti-slide piles and the corbels are made of reinforced concrete or steel.

6. A construction method for a vertical-rotating and horizontal-bidirectional restrained anchor pile support structure according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1, constructing the anti-slip pile (3): determining the position of the anti-slip pile (3), and constructing the anti-slip pile (3) at the designated position by static pressure or drilling insertion or drilling and pouring concrete; Step 2, constructing a pile top corbel (5): a top beam (4) and a corbel (5) are arranged between two adjacent anti-slip piles (1), and a position for arranging an anchor cable steering device (11) is reserved on the corbel (5); Step three, after the anti-sliding pile (3) and the bracket (5) have reached the design strength, the first anchor cable (7) and the first anchor head (10) are constructed, after the mortar at the anchoring end of the first anchor cable (7) has reached the design strength, the anchor cable steering device (11) is installed on the bracket (5), and the end of the first anchor cable (7) away from the anchoring end is fixedly connected to one end of the anchor cable steering device (11) for tensioning and locking the first anchor cable (7) to increase the overturning moment; Step 4: excavate the soil in front of the pile to a depth of about 2-2.5 meters, construct the second anchor cable (8) and the second anchor head (9), fix one end of the second anchor cable (8) to the side wall on the front side of the anti-sliding pile (3) through the second anchor head (9), and fix the other end of the second anchor cable (8) to the other end of the anchor cable steering device (11), and tension and lock according to the designed load; Step 5, repeating the above steps 1 to 4 until all the anti-slip piles (3), brackets (5), first anchor cables (7), second anchor cables (8), top beams (4) and anchor cable steering devices (11) are constructed; Step 6: excavate the soil in front of the pile according to the reverse method, excavate in sections and grades, construct the baffles (6) between the piles, and finally complete the excavation of the earth and stone of the foundation pit.

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