Pile-sheet combined retaining structure for slope support

Abstract

The present invention belongs to the technical field of slope prevention and control, and specifically discloses a pile-plate combined retaining structure for slope support with higher safety and reliability, and a method for constructing the above-mentioned pile-plate combined retaining structure. The pile-plate combined retaining structure for slope support can effectively increase the integrity of the pile-plate combined retaining structure and improve the safety of the pile-plate through the longitudinal beam components formed by the longitudinal beam arranged on the downstream surface of the pile-plate and the transverse beam arranged on the downstream side of the anti-slip pile, thereby effectively enhancing the stability of the slope and having higher safety and reliability. The construction method excavates the soil in front of the pile and between the piles in layers from top to bottom, digs a layer to construct a section of the pile-plate, and then circulates to the designed elevation of the pile-plate. This can not only avoid the soil between the piles from being excavated into a vertical slope and becoming unstable, which brings safety risks to the construction of the pile-plate, but also facilitates the construction, making it safe and reliable.

Description

Technical Field

[0001] The invention belongs to the technical field of slope prevention and control, and specifically discloses a pile-sheet combined retaining structure for slope support. Background Art

[0002] With the development of economy and construction technology, a large number of engineering constructions have also promoted the rapid development of engineering slope prevention and control technology. More technologies and measures have played an important role in the field of slope engineering. Among them, the retaining structure with anti-slide piles and pile-sheet structures combined with retaining forces has been widely used in engineering slopes.

[0003] The anti-slide pile-pile slab refers to a reinforced concrete slab structure arranged between two adjacent anti-slide piles, which effectively blocks the soil between the piles, prevents the soil between the piles from sliding, and ensures the joint force effect of the anti-slide piles and the pile slab. The pile-slab combined retaining structure, combined with the principle that the anti-slide piles can provide a large anti-slide force and the pile slab can support the soil between the piles, plays an effective reinforcement role on the engineering slope.

[0004] The existing pile-sheet combined retaining structure includes at least two anti-slide piles spaced apart on the slope and a pile-slab arranged between two adjacent anti-slide piles, and the pile-slab is a prefabricated reinforced concrete slab. The construction method of the traditional pile-sheet combined retaining structure is to adopt a prefabricated assembly method. Usually, after the anti-slide pile construction is completed, the soil between the piles is excavated and the prefabricated pile-slab is assembled. The pile-slab is arranged from bottom to top.

[0005] In actual construction, after the concrete strength of the anti-sliding pile reaches the design requirements, the soil between the adjacent anti-sliding piles is excavated, and then the prefabricated pile panels are assembled; therefore, when the traditional prefabricated assembly method is used to construct the anti-sliding pile panels, the soil between the piles needs to be excavated from top to bottom to the elevation of the pile panels. The pile panels are generally laid out at 3 to 5 meters, and some may reach more than 8 meters. Due to the need to install prefabricated pile panels, the soil between the piles needs to be excavated vertically, which poses a prominent problem for the stability of the vertical slope of the 3 to 5 meters or even higher covering layer, which poses a great threat to construction safety. Therefore, the safety and reliability of the existing pile-slab combined retaining structure is general, and the traditional pile-slab method often limits the pile-slab to 3 to 5 meters high, which to some extent restricts the widespread application and development of the pile-slab combined retaining structure in engineering slopes. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a pile-sheet combined retaining structure for slope support with higher safety and reliability.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a pile-plate combined retaining structure for slope support, including at least two anti-slip piles arranged at intervals on the slope and a pile plate arranged between any two adjacent anti-slip piles; it also includes longitudinal and transverse beam components, the longitudinal and transverse beam components include a longitudinal beam arranged on the downstream side surface of the pile plate and a transverse beam arranged on the downstream side of the anti-slip pile, the longitudinal beam is arranged along the height direction of the pile plate, and the transverse beam is provided with a protrusion embedded between two adjacent anti-slip piles and connected to the corresponding pile plate and longitudinal beam.

[0008] Furthermore, a pile top connecting beam is arranged on the top of the anti-sliding pile to connect the anti-sliding piles and the inter-pile plates together.

[0009] Furthermore, the longitudinal beam and the transverse beam are perpendicular to each other.

[0010] Furthermore, there are at least two cross beams, which are spaced apart along the height direction of the anti-slip piles.

[0011] Furthermore, the cross beam includes cross beam reinforcement, and the longitudinal beam includes longitudinal beam reinforcement; at the intersection of the cross beam and the longitudinal beam, the cross beam reinforcement and the longitudinal beam reinforcement are tied together.

[0012] Furthermore, an anchor cable anchored in the slope is provided at the intersection of the cross beam and the longitudinal beam.

[0013] Furthermore, it also includes anchor bars, the nominal diameter of which is not less than 22 mm, one end of the anchor bar extends into the anti-sliding pile, and the other end extends into the pile plate.

[0014] Furthermore, at the junction of the anti-sliding pile and the pile plate, at least two anchor bars are arranged at intervals along the height direction of the pile plate, and the distance between two upper and lower adjacent anchor bars is less than or equal to 30 cm.

[0015] The present invention also provides a construction method of a pile-sheet combined retaining structure for slope support, the method is used to construct the above-mentioned pile-sheet combined retaining structure for slope support, and comprises the following steps:

[0016] Step 1: Strengthen the construction platform: on the slope to be supported, excavate and support the construction platform of the anti-slide piles, and construct the slope water interception structure and the drainage structure of the construction platform;

[0017] Step 2: measurement and layout: according to the pile position coordinates and pile cross-sectional dimensions of the anti-sliding piles to be constructed, the construction positions of the anti-sliding piles and pile inter-slabs to be constructed are measured and laid out;

[0018] Step 3, anti-sliding pile construction: at the location where the anti-sliding pile is measured and set out, the pile hole of the anti-sliding pile is excavated, and after the excavation is completed, the pile body reinforcement is tied in the pile hole, and then the anti-sliding pile casting template is set around the pile body reinforcement and concrete is poured in the space surrounded by the anti-sliding pile casting template to form the anti-sliding pile;

[0019] Step 4: Excavation of soil in front of the pile: After the concrete of the anti-sliding pile reaches the 28-day strength requirement, remove the anti-sliding pile casting template, and then excavate a layer of soil on the upstream side of the anti-sliding pile and the soil between any two adjacent anti-sliding piles, with an excavation depth of 1 to 1.5 m;

[0020] Step 5, construct a section of pile slab: after excavating a layer of soil, roughen the side of the pile slab to be constructed on the anti-sliding pile and arrange anchor bars, at least two anchor bars are arranged at intervals along the height direction of the pile slab on each side of the anti-sliding pile with anchor bars, and the spacing between two upper and lower adjacent anchor bars is less than or equal to 30 cm; then tie the slab body steel bars between any two adjacent anti-sliding piles, and then set the pile slab casting template on the upstream and downstream sides of the slab body steel bars, and cast concrete in the space surrounded by the pile slab casting template to form a section of pile slab;

[0021] Step 6, completing the construction of the pile slab: after the concrete of the pile slab constructed in step 5 reaches the 28-day strength requirement, excavate another layer of soil downwards according to step 4. After the excavation is completed, construct another pile slab according to step 5. Repeat this cycle until the pile slab reaches the designed elevation. The constructed pile slabs constitute the overall structure of the pile slab;

[0022] Step 7, construction of longitudinal and transverse beam components: tie longitudinal beam reinforcement on the downstream surface of the pile inter-slab, tie transverse beam reinforcement on the downstream side of the anti-sliding pile, and pre-embed anchor holes at the nodes where the longitudinal beam reinforcement and the transverse beam reinforcement intersect; support beam templates outside the longitudinal beam reinforcement and the transverse beam reinforcement, and then pour concrete in the space surrounded by the beam templates to form longitudinal and transverse beam components;

[0023] Step 8, anchor cable construction: After the concrete of the longitudinal and transverse beam components reaches the 28-day strength requirement, anchor cables anchored in the slope are installed in the anchor cable holes.

[0024] Furthermore, if the design elevation of the pile slab exceeds 8m, after constructing each pile slab portion with a height of 6 to 8m according to step 6, first construct the corresponding longitudinal and transverse beam components and anchor cables according to steps 7 and 8, and then continue to construct the remaining portion of the pile slab according to steps 4 to 6 until the pile slab reaches the design elevation, and finally complete the construction of the longitudinal and transverse beam components and anchor cables corresponding to the remaining portion of the pile slab according to steps 7 and 8.

[0025] The beneficial effects of the present invention are as follows: the pile-plate combined retaining structure can effectively increase the integrity of the pile-plate combined retaining structure and improve the safety of the pile-plate through the longitudinal beams arranged on the downstream side of the pile-plate and the transverse beams arranged on the downstream side of the anti-sliding piles. The longitudinal and transverse beam components can effectively enhance the integrity of the pile-plate combined retaining structure, improve the safety of the pile-plate, and thus effectively enhance the stability of the slope, and the safety and reliability are higher. The construction method excavates the soil in front of the pile and between the piles in layers from top to bottom, digs a layer to construct a section of the pile-plate, and then circulates to the designed elevation of the pile-plate, which can avoid the soil between the piles from being excavated into a vertical slope and becoming unstable, which brings safety risks to the pile-plate construction, and facilitates the construction, making it safe and reliable; by arranging the longitudinal beam on the downstream side of the pile-plate, arranging the transverse beam on the downstream side of the anti-sliding pile, and laying the anchor cable at the node where the longitudinal beam and the transverse beam intersect, the integrity of the pile-plate and the anti-sliding pile can be increased, thereby achieving the effect of jointly resisting the soil pressure between the piles, and effectively improving the stability of the slope. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a plan view of the pile-sheet combined retaining structure of the present invention;

[0027] Figure 2 It is a elevational layout diagram of the pile-sheet combined retaining structure of the present invention;

[0028] The components shown in the figure are: anti-sliding pile 10 , pile top connecting beam 11 , pile inter-plate 20 , longitudinal beam 31 , transverse beam 32 , anchor cable 33 , anchor bar 40 . DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Combination Figure 1 and Figure 2 As shown, the pile-sheet combined retaining structure for slope support includes at least two anti-sliding piles 10 spaced apart on the slope and a pile plate 20 arranged between any two adjacent anti-sliding piles 10; it also includes longitudinal and transverse beam components, the longitudinal and transverse beam components include a longitudinal beam 31 arranged on the downstream side surface of the pile plate 20 and a transverse beam 32 arranged on the downstream side of the anti-sliding pile 10, the longitudinal beam 31 is arranged along the height direction of the pile plate 20, and the transverse beam 32 is provided with a protrusion embedded between two adjacent anti-sliding piles 10 and connected to the corresponding pile plate 20 and the longitudinal beam 31.

[0031] Among them, the anti-slide pile 10 is a pile column that penetrates the landslide body of the slope and penetrates into the slide bed, which is used to support the sliding force of the sliding body and stabilize the slope; the anti-slide pile 10 is generally a reinforced concrete structure, and each anti-slide pile 10 is usually distributed in one or more rows in a direction perpendicular to the downslope direction. The pile plate 20 is mainly used to combine with the anti-slide pile 10 to effectively block the soil between the piles, prevent the soil between the piles from slipping, and further stabilize the slope; the pile plate 20 is also generally a reinforced concrete structure, which can be prefabricated or cast in place.

[0032] The longitudinal and transverse beam components are mainly used to increase the integrity of the pile-slab combined retaining structure, thereby improving the safety of the pile-slab 20, thereby effectively enhancing the stability of the slope; the longitudinal and transverse beam components are usually reinforced concrete structures, which are mainly composed of longitudinal beams 31 and transverse beams 32; the longitudinal beams 31 are generally arranged in the vertical middle of the pile-slab 20, on the one hand, to strengthen the structural strength of the pile-slab 20, and on the other hand, to support the pile-slab 20; the transverse beams 32 are generally arranged perpendicular to the slope direction, mainly used to support the anti-slip piles 10 and the pile-slab 20; the upstream and downstream sides use the slope direction as the direction reference; in order to effectively improve the integrity of the pile-slab combined retaining structure, such as Figure 2 As shown, generally at least two cross beams 32 are provided, and the cross beams 32 are spaced apart along the height direction of the anti-sliding pile 10 .

[0033] In order to achieve a good supporting effect, the longitudinal beam 31 and the transverse beam 32 are usually made perpendicular to each other.

[0034] Specifically, the cross beam 32 includes cross beam reinforcements, and the longitudinal beam 31 includes longitudinal beam reinforcements; at the intersection of the cross beam 32 and the longitudinal beam 31 , the cross beam reinforcements are tied together with the longitudinal beam reinforcements.

[0035] In order to further enhance the stability of the slope, an anchor cable 33 anchored in the slope is usually provided at the intersection of the cross beam 32 and the longitudinal beam 31. The anchor cable 33 is a prestressed anchor cable that can effectively reinforce the pile-sheet combined retaining structure.

[0036] In order to further enhance the integrity of the pile-sheet combined retaining structure, Figure 2 As shown, a pile top connecting beam 11 is provided on the top of the anti-sliding pile 10 to connect the anti-sliding piles 10 and the inter-pile plates 20 together.

[0037] In order to improve the stability of the connection between the pile plate 20 and the anti-slip pile 10, Figure 1 As shown, the pile-slab combined retaining structure further includes an anchor bar 40, the nominal diameter of which is not less than 22 mm, one end of the anchor bar 40 extends into the anti-sliding pile 10, and the other end extends into the pile-slab 20. Generally, the length of the anchor bar 40 extending into the anti-sliding pile 10 or the pile-slab 20 should meet the length required by the concrete anchoring design; in order to strengthen the connection between the concrete and the anchor bar 40 so that the two can jointly bear the external load, the anchoring length is not less than 40 times the diameter of the anchor bar 40, and the anchor bar 40 is preferably a spiral steel bar.

[0038] On the basis of the above, in order to achieve a good connection and stability effect, at the junction of the anti-slip pile 10 and the pile plate 20, at least two anchor bars 40 are arranged at intervals along the height direction of the pile plate 20, and the distance between the two adjacent anchor bars 40 is less than or equal to 30 cm.

[0039] The present invention also provides a construction method of a pile-sheet combined retaining structure for slope support, the method is used to construct the above-mentioned pile-sheet combined retaining structure for slope support, and comprises the following steps:

[0040] Step 1: reinforcement of the construction platform: on the slope to be supported, the construction platform of the anti-sliding piles 10 is excavated and supported, and the slope water interception structure and the drainage structure of the construction platform are constructed; this step is generally carried out according to the construction drawing. During the construction process, the deformation monitoring and inspection of the construction platform and the rear slope should be strengthened to ensure the safety during the construction period; the rear slope generally refers to the slope part that is higher than the construction platform along the slope;

[0041] Step 2, measurement and layout: according to the pile position coordinates and pile body cross-sectional dimensions of the anti-sliding pile 10 to be constructed, the construction positions of the anti-sliding pile 10 and the pile inter-plate 20 to be constructed are measured and laid out; when measuring and laying out, the long side of the pile body cross-sectional dimension of the anti-sliding pile 10 is generally made perpendicular to the slope contour or parallel to the potential main sliding direction of the slope, and the short side of the pile body cross-sectional dimension of the anti-sliding pile 10 is perpendicular to the long side, and the on-site layout is carried out according to the pile center coordinates and pile body cross-sectional dimension of the anti-sliding pile 10 in the technical construction blueprint to determine the pile hole position of the anti-sliding pile 10; after determining the pile hole position, the on-site layout of the construction position of the pile inter-plate 20 is carried out between any two pile hole positions according to the cross-sectional dimension of the pile inter-plate 20 in the technical construction blueprint;

[0042] Step 3, construction of the anti-sliding pile 10: excavating the pile hole of the anti-sliding pile 10 at the position where the anti-sliding pile 10 is measured and set out, tying the pile body steel bars in the pile hole after the excavation is completed, and then setting the anti-sliding pile casting template around the pile body steel bars and pouring concrete in the space surrounded by the anti-sliding pile casting template to form the anti-sliding pile 10;

[0043] Step 4: Excavation of soil before the pile: After the pile concrete of the anti-sliding pile 10 reaches the 28-day strength requirement, remove the anti-sliding pile casting template, and then excavate a layer of soil on the upstream side of the anti-sliding pile 10 and the soil between any two adjacent anti-sliding piles 10, with an excavation depth of 1 to 1.5 m; the specific excavation depth is generally determined according to the physical and mechanical strength of the soil, and generally, as the excavation elevation decreases, the excavation depth can be appropriately reduced;

[0044] Step 5, construct a section of pile slab 20: after excavating a layer of soil, roughen the side of the pile slab 20 to be constructed on the anti-sliding pile 10 and arrange anchor bars 40. At least two anchor bars 40 are arranged at intervals along the height direction of the pile slab 20 on each side of the anti-sliding pile 10 provided with anchor bars 40, and the spacing between two upper and lower adjacent anchor bars 40 is less than or equal to 30 cm; then tie the plate body steel bars between any two adjacent anti-sliding piles 10, and then set the pile slab casting template on the upstream and downstream sides of the plate body steel bars, and cast concrete in the space surrounded by the pile slab casting template to form a section of pile slab 20;

[0045] Step 6, completing the construction of the pile slab 20: after the concrete of the pile slab 20 constructed in step 5 reaches the 28-day strength requirement, excavate a layer of soil downwards according to step 4, and after the excavation is completed, construct another pile slab 20 according to step 5, and repeat this cycle until the pile slab 20 reaches the designed elevation. The constructed pile slabs 20 constitute the overall structure of the pile slab 20;

[0046] Step 7, construction of longitudinal and transverse beam components: tie longitudinal beam reinforcement on the downstream surface of the pile inter-slab 20, tie transverse beam reinforcement on the downstream side of the anti-sliding pile 10, and pre-embed anchor holes at the nodes where the longitudinal beam reinforcement and the transverse beam reinforcement intersect; support beam templates on the outside of the longitudinal beam reinforcement and the transverse beam reinforcement, and then pour concrete in the space surrounded by the beam templates to form longitudinal and transverse beam components; in this step, the longitudinal beam reinforcement and the transverse beam reinforcement are generally tied according to the cross-sectional dimensions and reinforcement diagram of the longitudinal and transverse beam components;

[0047] Step eight, construction of anchor cables 33: after the concrete of the longitudinal and transverse beam components reaches the 28-day strength requirement, anchor cables 33 anchored in the slope are arranged in the anchor cable holes.

[0048] The above construction method excavates the soil in front of the pile and between the piles in layers from top to bottom, digs one layer to construct a section of the pile plate 20, and repeats this process until the designed elevation of the pile plate 20. This can avoid the soil between the piles from being excavated into a vertical slope and becoming unstable. The construction is convenient, safe and reliable, and is suitable for constructing a pile-plate combined retaining structure on a slope, especially on a high and steep slope. The pile body concrete of the anti-slip pile 10, the plate body concrete of the pile plate 20, and the concrete of the longitudinal and transverse beam components need to meet the requirements of the "Specifications for the Design of Concrete for Hydraulic Structures".

[0049] In order to ensure the safety of construction and the stability of the construction structure, preferably, if the design elevation of the pile plate 20 exceeds 8m, after constructing each part of the pile plate 20 with a height of 6 to 8m according to step six, first construct the corresponding part of the longitudinal and transverse beam components and anchor cables 33 according to steps seven and eight, and then continue to construct the remaining part of the pile plate 20 according to steps four to six until the pile plate 20 reaches the design elevation, and finally complete the construction of the longitudinal and transverse beam components and anchor cables 33 corresponding to the remaining part of the pile plate 20 according to steps seven and eight.

Claims

1. A pile-sheet combined retaining structure for slope support, comprising at least two anti-sliding piles (10) arranged at intervals on the slope and a pile inter-sheet (20) arranged between any two adjacent anti-sliding piles (10); characterized in that: It also includes longitudinal and transverse beam components, which include a longitudinal beam (31) arranged on the downstream side surface of the pile plate (20) and a transverse beam (32) arranged on the downstream side of the anti-sliding pile (10), the longitudinal beam (31) being arranged along the height direction of the pile plate (20), and the transverse beam (32) being provided with a protrusion embedded between two adjacent anti-sliding piles (10) and connected to the corresponding pile plate (20) and the longitudinal beam (31).

2. The pile-sheet combined retaining structure for slope support according to claim 1, characterized in that: A pile top connecting beam (11) is arranged on the top of the anti-sliding pile (10) to connect the anti-sliding piles (10) and the inter-pile plates (20) together.

3. The pile-sheet combined retaining structure for slope support according to claim 1, characterized in that: The longitudinal beam (31) and the transverse beam (32) are perpendicular to each other.

4. The pile-sheet combined retaining structure for slope support according to claim 3, characterized in that: There are at least two cross beams (32), which are arranged at intervals along the height direction of the anti-slip pile (10).

5. The pile-sheet combined retaining structure for slope support according to claim 4, characterized in that: The cross beam (32) includes cross beam reinforcement, and the longitudinal beam (31) includes longitudinal beam reinforcement; at the intersection of the cross beam (32) and the longitudinal beam (31), the cross beam reinforcement and the longitudinal beam reinforcement are tied together.

6. The pile-sheet combined retaining structure for slope support according to claim 5, characterized in that: An anchor cable (33) anchored in the slope is arranged at the intersection of the cross beam (32) and the longitudinal beam (31).

7. The pile-sheet combined retaining structure for slope support according to any one of claims 1 to 6, characterized in that: It also includes an anchor bar (40), the nominal diameter of which is not less than 22 mm, one end of the anchor bar (40) extends into the anti-sliding pile (10), and the other end extends into the inter-pile plate (20).

8. The pile-sheet combined retaining structure for slope support according to claim 7, characterized in that: At the junction of the anti-sliding pile (10) and the inter-pile plate (20), at least two anchor bars (40) are arranged at intervals along the height direction of the inter-pile plate (20), and the distance between two upper and lower adjacent anchor bars (40) is less than or equal to 30 cm.

9. A construction method for a pile-sheet combined retaining structure for slope support, characterized in that: The method is used to construct the pile-sheet combined retaining structure for slope support as claimed in claim 7 or 8, and comprises the following steps: Step 1: reinforcement of the construction platform: on the slope to be supported, excavation and support are performed on the construction platform of the anti-sliding piles (10), and a slope water interception structure and a drainage structure of the construction platform are constructed; Step 2, measuring and setting out: measuring and setting out the construction positions of the anti-sliding piles (10) and the pile inter-pile plates (20) to be constructed according to the pile position coordinates and pile cross-sectional dimensions of the anti-sliding piles (10) to be constructed; Step 3, construction of the anti-sliding pile (10): excavating the pile hole of the anti-sliding pile (10) at the position where the anti-sliding pile (10) is measured and laid out, tying the pile body reinforcement in the pile hole after the excavation is completed, and then setting the anti-sliding pile casting template around the pile body reinforcement and pouring concrete in the space surrounded by the anti-sliding pile casting template to form the anti-sliding pile (10); Step 4: excavation of soil in front of the pile: after the pile concrete of the anti-sliding pile (10) reaches the 28-day strength requirement, the anti-sliding pile casting template is removed, and then a layer of soil on the upstream side of the anti-sliding pile (10) and the soil between any two adjacent anti-sliding piles (10) is excavated, with an excavation depth of 1 to 1.5 m; Step 5, constructing a section of inter-pile slab (20): after excavating a layer of soil, roughening the side of the anti-sliding pile (10) where the inter-pile slab (20) is to be constructed and arranging anchor bars (40), at least two anchor bars (40) are arranged at intervals along the height direction of the inter-pile slab (20) on each side of the anti-sliding pile (10) provided with anchor bars (40), and the spacing between two upper and lower adjacent anchor bars (40) is less than or equal to 30 cm; then, slab body steel bars are tied between any two adjacent anti-sliding piles (10), and then pile slab casting templates are arranged on the upstream and downstream sides of the slab body steel bars, and concrete is poured in the space surrounded by the pile slab casting templates to form a section of inter-pile slab (20); Step 6, completing the construction of the inter-pile slab (20): after the slab concrete of a section of the inter-pile slab (20) constructed in step 5 reaches the 28-day strength requirement, excavate a layer of soil downwards in accordance with step 4, and after the excavation is completed, construct another section of the inter-pile slab (20) in accordance with step 5, and repeat this cycle until the inter-pile slab (20) reaches the designed elevation, and the constructed sections of the inter-pile slab (20) constitute the overall structure of the inter-pile slab (20); Step 7, construction of longitudinal and transverse beam components: tying longitudinal beam reinforcements on the downstream surface of the pile inter-slab (20), tying transverse beam reinforcements on the downstream side of the anti-sliding pile (10), and pre-burying anchor holes at the nodes where the longitudinal beam reinforcements and the transverse beam reinforcements intersect; erecting beam templates outside the longitudinal beam reinforcements and the transverse beam reinforcements, and then pouring concrete in the space surrounded by the beam templates to form longitudinal and transverse beam components; Step 8, anchor cable (33) construction: after the concrete of the longitudinal and transverse beam components reaches the 28-day strength requirement, anchor cables (33) anchored in the slope are arranged in the anchor cable holes.

10. The construction method of the pile-sheet combined retaining structure for slope support according to claim 9, characterized in that: If the design elevation of the pile plate (20) exceeds 8m, after each 6-8m high portion of the pile plate (20) is constructed according to step 6, the longitudinal and transverse beam components and anchor cables (33) corresponding to the portion are first constructed according to steps 7 and 8, and then the remaining portion of the pile plate (20) is continuously constructed according to steps 4 to 6 until the pile plate (20) reaches the design elevation, and finally the longitudinal and transverse beam components and anchor cables (33) corresponding to the remaining portion of the pile plate (20) are completed according to steps 7 and 8.

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