Assembled anchor cable steel waist beam connection device and construction method thereof

Abstract

The present invention discloses an assembled anchor cable steel waist beam connection device and a construction method thereof. The assembled anchor cable steel waist beam connection device includes a waist beam component, a plurality of embedded steel plates and a plurality of retaining piles. The waist beam component has a plurality of installation notches. The installation notches are arranged at intervals on the waist beam component, and the plurality of installation notches, the plurality of embedded steel plates and the plurality of retaining piles correspond to each other. The embedded steel plates are arranged in the installation notches and connected to the waist beam component. The retaining piles are connected to the embedded steel plates and enclose a receiving space. The waist beam component, the embedded steel plates and the retaining piles cooperate with each other and are arranged in a one-to-one correspondence to ensure the connection strength between the three. Moreover, because the embedded steel plates and the retaining piles enclose a receiving space, it can solve the problem of difficulty in subsequent construction of side wall waterproofing and fertilizer trough backfilling caused by the need to reserve a fertilizer trough when setting a concrete waist beam or a steel waist beam inside the retaining pile. The poor density of the fertilizer trough backfill becomes a water-rich space, which has a greater impact on the station.

Description

Technical Field

[0001] The present invention relates to the field of connection between anchor cables and retaining piles in underground deep foundation pit engineering, and in particular to an assembled anchor cable steel waist beam connection device and a construction method thereof. Background Art

[0002] With the continuous advancement of urbanization in my country, underground space development is experiencing rapid growth, with an increasing number of underground projects, including underground pedestrian walkways, river-crossing tunnels, and urban rail transit. Limited by the scale and width of deep foundation pits, the "retaining pile + anchor cable" support method is widely used. The placement of the anchor cable waist beam and its connection to the retaining piles are critical to the safety of the pile-anchor support system.

[0003] Regarding the connection setting of anchor cable waist beams, the common practice in current engineering practice is to set concrete waist beams or steel waist beams on the inner side of the retaining piles. After years of engineering practice and demonstration, the following problems were found: First, when setting concrete waist beams or steel waist beams on the inner side of the retaining piles, it is necessary to reserve a fertilizer trough, which makes the subsequent construction of side wall waterproofing and fertilizer trough backfilling difficult. The fertilizer trough backfill has poor density and often becomes a water-rich space, which has a great impact on the station; second, the concrete waist beams or steel waist beams used have poor integrity in the connection with the retaining piles; third, the concrete waist beams or steel waist beams have poor integrity in the connection with the retaining piles; fourth, in conventional practices, the steel strands at the anchor head are exposed, which can easily cause damage to the side wall waterproofing and affect the full waterproofing effect. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect that the connection setting of the anchor cable waist beam used in the prior art requires a reserved fertilizer groove, and to provide an assembled anchor cable steel waist beam connection device and a construction method thereof.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A prefabricated anchor cable steel waist beam connection device, which includes a waist beam component, multiple embedded steel plates and multiple guard piles. The waist beam component has multiple installation notches, and the multiple installation notches are arranged at intervals on the waist beam component, and the multiple installation notches, multiple embedded steel plates and multiple guard piles correspond to each other one by one. The embedded steel plates are arranged in the installation notches and connected to the waist beam component, and the guard piles are connected to the embedded steel plates and enclosed to form an accommodating space.

[0007] In this solution, the waist beam component, embedded steel plate and guardrail piles are provided in the assembled steel waist beam connection device, and the three cooperate with each other and are arranged one by one. The installation notch in the waist beam component can reserve space for the embedded steel plate to be clamped. The embedded steel plate is locked to the waist beam component by clamping to facilitate mutual cooperation with the waist beam component. At the same time, the two ends of the embedded steel plate are clamped on the guardrail piles to form a complete structure to ensure the connection strength between the three. Moreover, because there is an accommodating space enclosed between the embedded steel plate and the guardrail piles, it can solve the problem of the connection setting of the anchor waist beam in the existing technology that a concrete waist beam or a steel waist beam is set inside the guardrail pile, and a fertilizer trough needs to be reserved, which makes the subsequent construction of side wall waterproofing and fertilizer trough backfilling difficult. The poor density of the fertilizer trough backfill becomes a water-rich space, which has a greater impact on the station.

[0008] Preferably, the assembled anchor cable steel waist beam connection device includes a plurality of anchors and a plurality of anchor cables, the waist beam component has a plurality of first through-holes, a plurality of the installation notches and the plurality of the first through-holes are cross-spaced and arranged on the waist beam component, the plurality of the anchor cables, the plurality of the anchors and the plurality of the first through-holes correspond one to one, the anchors are fitted on the outer wall surface of the waist beam component, the anchor cables pass through the first through-holes and are connected to the anchors.

[0009] In this solution, the anchor, anchor cable and multiple first perforations cooperate with each other. First, the anchor is used to position and lock the anchor cable. At the same time, the first perforation opened on the waist beam component provides conditions for the insertion of the anchor cable. The anchor cable can be inserted into the anchor along the first perforation and stabilized by the anchor, thereby improving the stability and strength of the overall connection, and improving the efficiency and safety of on-site operations. Moreover, based on the stable operation provided by the anchor, the anchor cable can be directly tensioned without waiting, thereby solving the defect in the prior art that the concrete waist beam needs to be set up only after the concrete reaches the design strength before the anchor cable can be tensioned, resulting in a long construction period.

[0010] Preferably, a supporting steel plate assembly is provided between the anchor and the outer wall surface of the waist beam component.

[0011] In this solution, the supporting and connecting steel plates expand the force contact area. After the anchor cable is locked by the anchor, the force can be dispersed to the supporting and connecting steel plates during tensioning, avoiding damage caused by overload of the anchor.

[0012] Preferably, the waist beam component includes two I-beams, a front end connecting steel plate and a rear end connecting steel plate. The two I-beams are spaced apart in an upper and lower manner, the rear end connecting steel plate is close to the guardrail pile, and the front end connecting steel plate is far away from the guardrail pile. The two ends of the two I-beams are respectively connected to the front end connecting steel plate and the rear end connecting steel plate.

[0013] In this solution, the two I-beams, the front connecting steel plate and the rear connecting steel plate are connected in sequence, and the two I-beams are spaced apart in the upper and lower parts. Under the support of the I-beams, the overall structure has strong rigidity and stability.

[0014] Preferably, the front end connecting steel plate and the rear end connecting steel plate are correspondingly provided with the first through-holes.

[0015] In this solution, the front connecting steel plate and the rear connecting steel plate are respectively provided with a first perforation, and the position of the first perforation can be selected according to needs, providing preconditions for the insertion and connection of the anchor cable, facilitating the stabilization of the anchor cable and improving installation efficiency.

[0016] Preferably, the waist beam component includes stiffening ribs, and the stiffening ribs are connected to the I-beam, the front end connecting steel plate and / or the rear end connecting steel plate.

[0017] In this solution, the provision of stiffening ribs can ensure the structural stability of the waist beam component and disperse the force exerted on the I-beam, thereby improving the stability of the waist beam component, strengthening the rigidity of the waist beam component, and ensuring the reliability of the connection.

[0018] Preferably, the embedded steel plate includes a curved steel plate and a plurality of anchor bars, and the curved steel plate is arranged in the installation notch and connected to the waist beam component;

[0019] The arc-shaped steel plate is provided with a plurality of second through-holes, one end of the anchor bar is connected to the second through-hole, and the other end of the anchor bar extends into the accommodating space.

[0020] In this solution, by setting a plurality of second through-holes on the curved steel plate, a connection environment is provided for the plurality of anchor bars, and finally the plurality of anchor bars are firmly connected to the curved steel plate and extend into the accommodating space.

[0021] Preferably, the assembled anchor cable steel waist beam connection device also includes a sprayed concrete layer and a backfill layer. The sprayed concrete layer is adhered to the outer wall surface of the front end connecting steel plate and extends in the same direction as the front end connecting steel plate, and is used to cover and shield the anchor cable and the anchor. The backfill layer is adhered to the rear end connecting steel plate and abuts against the multiple embedded steel plates.

[0022] In this solution, the sprayed concrete layer and the backfill layer are respectively set and covered at both ends of the waist beam component. The sprayed concrete layer can cover the anchor cable and anchor, solving the defect of the anchor cable's anchor head being exposed in conventional practices, which easily causes damage to the side wall waterproofing and affects the full waterproofing effect.

[0023] A construction method for an assembled anchor cable steel waist beam connection device is provided. The construction method is used to manufacture the assembled anchor cable steel waist beam connection device. The construction method comprises the following steps:

[0024] S1. Connect the anchor bar to the arc-shaped steel plate through the second perforation to form a pre-embedded steel plate, and place multiple pre-embedded steel plates in the multiple installation notches accordingly;

[0025] S2. Assemble and fix the embedded steel plate and the steel cage of the retaining pile according to the vertical elevation of the anchor cable;

[0026] S3. Determine the arc sections at both ends of the I-beam and the lengths of the front and rear connecting steel plates according to the outer diameters of the embedded steel plates, and perform sequential welding to weld the stiffening ribs to the front and rear connecting steel plates, and then weld the front and rear connecting steel plates to the I-beams respectively.

[0027] S4. Determine the positions of the first perforations on the front connecting steel plate and the rear connecting steel plate and cut them into holes.

[0028] In this solution, the above-mentioned construction method is used to connect the components sequentially, fully considering the conditions of on-site construction. It can simplify the operation process and reduce unnecessary procedures, while stabilizing the components and improving the integrity of the structure.

[0029] Preferably, the construction method further comprises the following steps:

[0030] S5, providing a backfill layer along one side of the rear end connecting steel plate close to the retaining pile and extending to the plurality of pre-buried steel plates;

[0031] S6, passing the anchor cable through the first through-hole, installing the anchor and the supporting steel plate assembly and welding them to the front connecting steel plate, and locking the anchor cable;

[0032] S7. A sprayed concrete layer is provided along the side of the front end connecting steel plate away from the retaining pile, and covers the waist beam component and the anchor.

[0033] In this plan, based on the previous construction method, the anchor cables are further connected, the backfill layer and the sprayed concrete layer are set, and a cycle of the overall construction is completed.

[0034] On the basis of conforming to the common sense in this field, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0035] The positive progressive effect of the present invention is that: in the present invention, the waist beam component, embedded steel plate and guardrail piles are provided in the assembled steel waist beam connection device, and the three cooperate with each other and are arranged one by one. The installation notch in the waist beam component can reserve space for the embedded steel plate to be clamped. The embedded steel plate is locked to the waist beam component by clamping, so as to facilitate mutual cooperation with the waist beam component. At the same time, the two ends of the embedded steel plate are clamped on the guardrail pile to form a complete structure, ensuring the connection strength between the three. Moreover, because there is an accommodating space enclosed between the embedded steel plate and the guardrail pile, it can solve the problem that the connection setting of the anchor waist beam in the prior art is to set a concrete waist beam or a steel waist beam inside the guardrail pile, which requires a fertilizer trough to be reserved, resulting in difficulties in subsequent construction of side wall waterproofing and fertilizer trough backfilling construction. The poor density of the fertilizer trough backfill becomes a water-rich space, which has a greater impact on the station. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a top view of the assembled anchor cable steel waist beam connection device according to an embodiment of the present invention.

[0037] Figure 2 This is a cross-sectional view of an assembled anchor cable steel waist beam connection device according to an embodiment of the present invention.

[0038] Figure 3 2. It is a top view of the waist beam component according to an embodiment of the present invention.

[0039] Figure 4 This is a side view of a waist beam component according to an embodiment of the present invention.

[0040] Figure 5 Schematic diagram of the connection between the waist beam component and the embedded steel plate according to an embodiment of the present invention.

[0041] Figure 6 Schematic diagram of the structure of the curved steel plate according to an embodiment of the present invention.

[0042] Description of reference numerals:

[0043] Waist beam component 1

[0044] I-beam 101

[0045] Front connecting steel plate 102

[0046] Rear connecting steel plate 103

[0047] First through hole 104

[0048] Stiffener 105

[0049] Embedded steel plate 2

[0050] Curved steel plate 201

[0051] Anchor bar 202

[0052] Anchor 3

[0053] Anchor 4

[0054] Retaining pile 5

[0055] Backfill layer 6

[0056] Sprayed concrete layer 7

[0057] Support steel plate assembly 8

[0058] Installation notch 9 DETAILED DESCRIPTION

[0059] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0060] like Figure 1 As shown, the present invention discloses an assembled anchor cable steel waist beam connection device, which includes a waist beam component 1, multiple embedded steel plates 2 and multiple guard piles 5. The waist beam component 1 has multiple installation notches 9, and the multiple installation notches 9 are arranged at intervals on the waist beam component 1, and the multiple installation notches 9, multiple embedded steel plates 2 and multiple guard piles 5 correspond one to one. The embedded steel plates 2 are arranged in the installation notches 9 and connected to the waist beam component 1, and the guard piles 5 are connected to the embedded steel plates 2 and enclosed to form an accommodating space. The assembled steel waist beam connection device is provided with a waist beam component 1, an embedded steel plate 2 and a guard pile 5, and the three cooperate with each other and are arranged one by one. The installation notch 9 in the waist beam component 1 can reserve space for the embedded steel plate 2 to be clamped. The embedded steel plate 2 is locked to the waist beam component 1 by clamping, so as to facilitate mutual cooperation with the waist beam component 1. At the same time, the two ends of the embedded steel plate 2 are clamped on the guard pile 5 to form a complete structure to ensure the connection strength between the three. Moreover, because there is an accommodating space enclosed between the embedded steel plate 2 and the guard pile 5, it can solve the problem of the connection setting of the anchor cable 4 waist beam in the existing technology. A concrete waist beam or a steel waist beam is set inside the guard pile 5, and a fertilizer trough needs to be reserved, which makes the subsequent construction of side wall waterproofing and fertilizer trough backfilling difficult. The poor density of the fertilizer trough backfill becomes a water-rich space, which has a greater impact on the station.

[0061] Specifically, the assembled anchor cable steel waist beam connection device proposed in the present invention is easy to install; has high overall rigidity; effectively avoids the need to set up a fertilizer trough; has effective connection and strong applicability, and can be used in the pile anchor system anchor cable 4 waist beam connection node in subways, railways, municipalities, underground spaces, and civil construction foundation pits, and has good scalability.

[0062] Specifically, if Figure 1 、 Figure 3 、 Figure 4 and Figure 5As shown, the waist beam component 1 and the embedded steel plate 2 are connected by welding, and the welds are set along the outer working surface flanges of the two I-beams 101, the contact surface between the web and the embedded steel plate 2, and the contact surface between the front connecting steel plate 102 and the embedded steel plate 2. f is the weld height, weld height h f According to calculations, the steel plate thickness, size, and component selection of each component that is not less than 8mm in structure can be adjusted according to the specific conditions of the project and on-site conditions, and should include all size ranges that meet the requirements of the project.

[0063] like Figure 2 and Figure 4 As shown, the assembled anchor steel waist beam connection device includes multiple anchors 3 and multiple anchor cables 4. The waist beam component 1 has multiple first through-holes 104. Multiple installation notches 9 and the multiple first through-holes 104 are arranged on the waist beam component 1 at cross-intervals. Multiple anchor cables 4, multiple anchors 3 and multiple first through-holes 104 correspond one to one. The anchor 3 is fitted on the outer wall surface of the waist beam component 1, and the anchor cable 4 passes through the first through-holes 104 and is connected to the anchor 3. The anchor 3, the anchor cable 4 and the plurality of first through-holes 104 cooperate with each other. First, the anchor 3 is used to position and lock the anchor cable 4. At the same time, the first through-hole 104 opened on the waist beam component 1 provides conditions for the insertion of the anchor cable 4. The anchor cable 4 can be inserted into the anchor 3 along the first through-hole 104 and stabilized by the anchor 3, thereby improving the stability and strength of the overall connection, and improving the efficiency and safety of on-site operations. Moreover, based on the stable operation provided by the anchor 3, the anchor cable 4 can be directly tensioned without waiting, thereby solving the defect in the prior art that the anchor cable 4 can only be tensioned after the concrete reaches the design strength when setting up the concrete waist beam, resulting in a long construction period.

[0064] Specifically, the anchor cable 4 should include all ranges that meet the bearing capacity and conform to the engineering requirements.

[0065] A support steel plate assembly 8 is provided between the anchor 3 and the outer wall of the waist beam component 1. The support connecting steel plate expands the contact area of ​​the force. After the anchor cable 4 is locked by the anchor 3, the force can be dispersed to the support connecting steel plate during tensioning, avoiding damage caused by overload of the force borne by the anchor 3.

[0066] The waist beam component 1 includes two I-beams 101, a front connecting steel plate 102, and a rear connecting steel plate 103. The two I-beams 101 are spaced apart in a vertical direction, with the rear connecting steel plate 103 close to the retaining pile 5 and the front connecting steel plate 102 away from the retaining pile 5. The two ends of the two I-beams 101 are respectively connected to the front connecting steel plate 102 and the rear connecting steel plate 103. The two I-beams 101, the front connecting steel plate 102, and the rear connecting steel plate 103 are connected in sequence, and the two I-beams 101 are spaced apart in a vertical direction. Under the support of the I-beams 101, the overall structure has strong rigidity and stability.

[0067] Specifically, if Figure 3 and Figure 4 As shown, in the embodiment of the present invention, there are two I-beams 101, and the model selection is determined according to the force calculation. It is recommended that the model is not less than I-20a. The radius of the installation cutout is the same as the outer diameter of the embedded steel plate 2. The length of the I-beam 101 (in this embodiment, b1 is the length of the front connecting steel plate 102, and b2 is the length of the rear connecting steel plate 103) is determined according to the specific setting conditions on site. The center distance between the two I-beams 101 is determined according to factors such as the angle set by the anchor cable 4, and it is recommended to be not less than 350mm; the front connecting steel plate 102 is a rectangular steel plate, the thickness of the front connecting steel plate 102 is not less than 16mm, and the height of the front connecting steel plate 102 is h2=h1 (h1 is the outer contour height of the waist beam component 1)-2h f , the length of the front connecting steel plate 102 b3=b1+2h f , h f The rear connecting plate 103 is also a rectangular steel plate with a thickness of not less than 16mm. The rear connecting plate 103 has the same height as the front connecting plate 102. The length of the rear connecting plate 103 is b4 = b2-2h. f , h f is the weld height; the front connecting steel plate 102 and the rear connecting steel plate 103 are each provided with a first through-hole 104 with a hole diameter of 50 mm, and the position is determined according to the angle of the anchor cable 4; the stiffening rib 105 is provided between the two I-beams 101, with a thickness of not less than 14 mm, and is arranged symmetrically on both sides of the center line of the anchor cable 4, with a spacing of not less than 300 mm and not greater than the net distance of the retaining pile 5; the front connecting steel plate 102, the rear connecting steel plate 103 and the upper and lower ends of the I-beam 101 are welded with fillet welds, and the weld height h f Not less than 10mm, the stiffening rib 105 and the I-beam 101 are welded with double-sided fillet welds, and the weld height h f Not less than 8mm to ensure connection strength.

[0068] like Figure 4 As shown, the front connecting steel plate 102 and the rear connecting steel plate 103 are respectively provided with a first through-hole 104. The front connecting steel plate 102 and the rear connecting steel plate 103 are respectively provided with a first through-hole 104, and the position of the first through-hole 104 can be selected as needed, providing preconditions for the insertion and connection of the anchor cable 4, facilitating the stabilization of the anchor cable 4 and improving installation efficiency.

[0069] like Figure 4As shown, the waist beam component 1 includes stiffening ribs 105, which are connected to the I-beam 101, the front connecting steel plate 102, and / or the rear connecting steel plate 103. The provision of stiffening ribs 105 ensures the structural stability of the waist beam component 1 and disperses the forces acting on the I-beam 101, thereby improving the stability of the waist beam component 1, enhancing the rigidity of the waist beam component 1, and ensuring the reliability of the connection.

[0070] like Figure 1 、 Figure 3 、 Figure 5 and Figure 6 As shown, the embedded steel plate 2 includes a curved steel plate 201 and multiple anchor bars. The curved steel plate 201 is positioned within the mounting notch 9 and connected to the waist beam component 1. The curved steel plate 201 is provided with multiple second through-holes, one end of the anchor bar is connected to the second through-hole, and the other end of the anchor bar extends into the accommodation space. The multiple second through-holes in the curved steel plate 201 provide a connection environment for the multiple anchor bars, ultimately ensuring that the multiple anchor bars are securely connected to the curved steel plate 201 and extend into the accommodation space.

[0071] Specifically, if Figure 5 and Figure 6 As shown, in an embodiment of the present invention, the thickness of the arc-shaped steel plate 201 is not less than 18 mm, is concentric with the retaining pile 5, is arranged close to the outer side of the steel cage of the retaining pile 5, and the arc angle is not less than 150°. The height of the arc-shaped steel plate 201 is h3=h1+2x50 mm, and sufficient welding construction space is reserved between the waist beam component 1 and the embedded steel plate 2; the diameter of the anchor bar is not less than φ18, the length is not less than 200 mm, and it is arranged radially along the retaining pile 5, with a circumferential spacing of not more than 200 mm and a vertical spacing of not more than 200 mm.

[0072] like Figure 1 As shown, the assembled anchor cable steel waist beam connection device also includes a sprayed concrete layer 7 and a backfill layer 6. The sprayed concrete layer 7 is attached to the outer wall surface of the front connecting steel plate 102 and extends in the same direction as the front connecting steel plate 102, used to cover and shield the anchor cable 4 and the anchor 3. The backfill layer 6 is attached to the rear connecting steel plate 103 and abuts against the multiple embedded steel plates 2. The sprayed concrete layer 7 and the backfill layer 6 are respectively arranged and cover the two ends of the waist beam component 1. The sprayed concrete layer 7 can cover the anchor cable 4 and the anchor 3, solving the problem of the conventional practice that the steel strands at the anchor head of the anchor cable 4 are exposed, which can easily cause damage to the side wall waterproofing and affect the full waterproofing effect.

[0073] like Figure 1 As shown, specifically, the thickness of the backfill layer 6 is not less than 50 mm, and the vertical height should not be less than h1; the thickness of the sprayed concrete layer 7 effectively covers the anchor head of the anchor cable 4, including all structures and size ranges that meet engineering requirements.

[0074] The present invention also discloses a construction method for an assembled anchor cable steel waist beam connection device, which is used to manufacture the assembled anchor cable steel waist beam connection device. The construction method comprises the following steps: S1, connecting the anchor bar to the arc-shaped steel plate 201 through the second perforation to form a pre-embedded steel plate 2, and placing a plurality of pre-embedded steel plates 2 in a plurality of installation notches 9; S2, assembling and fixing the pre-embedded steel plate 2 to the steel cage of the retaining pile 5 according to the vertical setting elevation of the anchor cable 4; S3, fixing the pre-embedded steel plate 2 to the steel cage of the retaining pile 5; According to the outer diameter of the embedded steel plate 2, the arc sections at both ends of the I-beam 101 and the lengths of the front connecting steel plate 102 and the rear connecting steel plate 103 are determined, and sequential welding is performed to weld the stiffening ribs 105 to the front connecting steel plate 102 and the rear connecting steel plate 103, and the front connecting steel plate 102 and the rear connecting steel plate 103 are welded to the I-beam 101 respectively; S4, the positions of the first perforations 104 on the front connecting steel plate 102 and the rear connecting steel plate 103 are determined and cut into holes. The above construction method is used to sequentially connect the various components, fully considering the conditions of on-site construction, which can simplify the operation process and reduce unnecessary procedures, while stabilizing the various components and improving the integrity of the structure.

[0075] The construction method also includes the following steps: S5, setting a backfill layer 6 along the side of the rear connecting steel plate 103 near the retaining pile 5, extending it to the multiple embedded steel plates 2; S6, passing the anchor cable 4 through the first perforation 104, installing the anchor 3 and the support steel plate assembly 8, welding them to the front connecting steel plate 102, and locking the anchor cable 4; S7, setting a sprayed concrete layer 7 along the side of the front connecting steel plate 102 away from the retaining pile 5, covering the waist beam component 1 and the anchor 3. Based on the previous construction method, the anchor cable 4 is further connected, and the backfill layer 6 and sprayed concrete layer 7 are set, completing the overall construction cycle.

[0076] like Figure 1 and Figure 5 As shown, specifically, in the embodiment of the present invention, a steel cage is tied around the outer periphery of the retaining pile 5. When the steel cage of the retaining pile 5 is tied, the embedded steel plate 2 welded with anchor bars is connected to the steel cage into a whole according to the center line elevation of each anchor cable 4. The steel cage is lowered and concrete is poured. The foundation pit is excavated to the height position where the anchor cable 4 is set, the protective layer of the embedded steel plate 2 is chiseled out, the soil between the piles is excavated, and a fine stone concrete backfill layer 6 is applied between the piles. After reaching the design strength, the anchor cable 4 is drilled, and after the drilling is completed, the steel strand is installed and grouting is performed. The waist beam component 1 is welded to the embedded steel plate 2, and the arc steel plate 201 is welded and locked. Finally, the mesh is sprayed between the piles to form a sprayed concrete layer 7 to effectively wrap the anchor head. Further excavation is carried out to make the anchor cable 4 form an effective support for the foundation pit and can effectively avoid the anchor head of the anchor cable 4 from damaging the side wall waterproof membrane.

[0077] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. An assembled anchor cable steel waist beam connection device, characterized in that: The assembled anchor cable steel waist beam connection device includes a waist beam component, a plurality of embedded steel plates and a plurality of guard piles, the waist beam component has a plurality of installation notches, the plurality of installation notches are arranged at intervals on the waist beam component, and the plurality of installation notches, the plurality of embedded steel plates and the plurality of guard piles correspond to each other one by one, the embedded steel plates are arranged in the installation notches and connected to the waist beam component, and the guard piles are connected to the embedded steel plates and enclosed to form an accommodating space; The assembled anchor cable steel waist beam connection device includes a plurality of anchors and a plurality of anchor cables, the waist beam component has a plurality of first through-holes, a plurality of the installation notches and the plurality of the first through-holes are arranged on the waist beam component at intervals, the plurality of the anchor cables, the plurality of the anchors and the plurality of the first through-holes correspond one to one, the anchor cables are fitted on the outer wall surface of the waist beam component, the anchor cables pass through the first through-holes and are connected to the anchors; The embedded steel plate includes a curved steel plate and a plurality of anchor bars, wherein the curved steel plate is arranged in the installation notch and connected to the waist beam component; The arc-shaped steel plate is provided with a plurality of second through-holes, one end of the anchor bar is connected to the second through-hole, and the other end of the anchor bar extends into the accommodating space.

2. The assembled anchor cable steel waist beam connection device according to claim 1, characterized in that: A supporting steel plate assembly is provided between the anchor and the outer wall surface of the waist beam component.

3. The assembled anchor cable steel waist beam connection device according to claim 1, characterized in that: The waist beam component includes two I-beams, a front connecting steel plate and a rear connecting steel plate. The two I-beams are spaced apart in an upper and lower manner. The rear connecting steel plate is close to the guardrail pile, and the front connecting steel plate is far away from the guardrail pile. The two ends of the two I-beams are respectively connected to the front connecting steel plate and the rear connecting steel plate.

4. The assembled anchor cable steel waist beam connection device according to claim 3, characterized in that: The front end connecting steel plate and the rear end connecting steel plate are correspondingly provided with the first through holes.

5. The assembled anchor cable steel waist beam connection device according to claim 3, characterized in that: The waist beam component includes a stiffening rib, and the stiffening rib is connected to the I-beam, the front end connecting steel plate and the rear end connecting steel plate.

6. The assembled anchor cable steel waist beam connection device according to claim 4, characterized in that: The assembled anchor cable steel waist beam connection device also includes a sprayed concrete layer and a backfill layer. The sprayed concrete layer is attached to the outer wall surface of the front connecting steel plate and extends in the same direction as the front connecting steel plate, and is used to cover and shield the anchor cable and the anchor. The backfill layer is attached to the rear connecting steel plate and abuts against the multiple embedded steel plates.

7. A construction method for an assembled anchor cable steel waist beam connection device, characterized in that: The construction method of the assembled anchor cable steel waist beam connection device is used to manufacture the assembled anchor cable steel waist beam connection device according to any one of claims 1 to 6, and the construction method comprises the following steps: S1. Connect the anchor bar to the arc-shaped steel plate through the second perforation to form a pre-embedded steel plate, and place multiple pre-embedded steel plates in the multiple installation notches accordingly; S2. Assemble and fix the embedded steel plate and the steel cage of the retaining pile according to the vertical elevation of the anchor cable; S3. Determine the arc sections at both ends of the I-beam and the lengths of the front and rear connecting steel plates according to the outer diameters of the embedded steel plates, and perform sequential welding to weld the stiffening ribs to the front and rear connecting steel plates, and then weld the front and rear connecting steel plates to the I-beams respectively. S4. Determine the positions of the first perforations on the front connecting steel plate and the rear connecting steel plate and cut them into holes.

8. The construction method of the assembled anchor cable steel waist beam connection device according to claim 7, characterized in that: The construction method further comprises the following steps: S5, providing a backfill layer along one side of the rear end connecting steel plate close to the retaining pile and extending to the plurality of pre-buried steel plates; S6, passing the anchor cable through the first through-hole, installing the anchor and the supporting steel plate assembly and welding them to the front connecting steel plate, and locking the anchor cable; S7. A sprayed concrete layer is provided along the side of the front end connecting steel plate away from the retaining pile, and covers the waist beam component and the anchor.

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