A green construction method for pile-sheet retaining wall slope reinforcement structure

Abstract

The utility model relates to the technical field of slope engineering, and specifically, to a slope reinforcement structure for pile-plate retaining wall used in green construction. It includes a retaining structure composed of a number of anti-sliding piles arranged side by side at equal intervals and a pile body plate arranged on one side of the anti-sliding piles. The upper end of each anti-sliding pile is provided with a reinforcement structure composed of an anchor cable body, a steel casing, embedded steel bars, a waist beam, an anchor seal, a borehole, cement slurry and a water stop strip; wherein: the waist beam is fixed to the anti-sliding pile by a number of embedded steel bars; the anchor cable body is inserted into the inner end of the borehole after passing through the waist beam, and water stop strips are wrapped and fixed on the outer sides of both ends of the steel casing. After the cement slurry reaches the design strength, the anchor seal is constructed at the outer end of the anchor cable body. The utility model has a simple structure, strong applicability, and reliable technology. It can reinforce the slope of the pile-plate retaining wall that has been constructed, especially the slope with large displacement. It can effectively reduce the continuous displacement of the slope and increase the service life of the slope retaining structure.

Description

Technical Field

[0001] The utility model relates to the technical field of slope engineering, in particular to a pile-plate retaining wall slope reinforcement structure used in green construction. Background Art

[0002] With the development of my country's national economy, a large number of railways, highways, water conservancy, mines, towns and other facilities have been built, the number of slopes excavated and filled in human engineering activities has increased, the slope height has also increased, and a large number of civil and industrial buildings have continued to rise, and a large number of building slopes have also emerged. However, due to the complex geological conditions, the increasing scale of human transformation, improper design and construction methods, deformation and disaster accidents after high slope excavation have also occurred frequently, so slope reinforcement has also become an important topic in slope engineering.

[0003] Anti-slide piles have the advantages of good supporting effect, safe construction, small disturbance and high supporting height, and are widely used in slope support projects. However, with the passage of time and changes in the environment and working conditions, many highway slopes and building slopes have safety hazards such as large slope top displacement and slope top cracks. Therefore, it is necessary to study a reinforcement structure that is easy to construct and has little impact on the support structure to solve the above problems.

[0004] At the same time, with the rise of the concept of green construction, higher requirements have been put forward for the construction process of various projects. Green construction refers to the construction activities that maximize resource conservation and reduce negative impacts on the environment through scientific management and technological progress under the premise of ensuring basic requirements such as quality and safety in engineering construction, and achieve four savings and one environmental protection (energy saving, land saving, water saving, material saving and environmental protection). In view of this, we propose a green construction method for pile-sheet retaining wall slope reinforcement structure. Utility Model Content

[0005] The purpose of the utility model is to provide a pile-plate retaining wall slope reinforcement structure used in green construction, which utilizes the combined effect of anchor cables and anti-slip piles to conveniently add prestressed anchor cables on the basis of the constructed anti-slip piles. The anti-slip piles work together with the anchor cables to play an anti-slip role in the form of a shoulder pole, effectively controlling the displacement of the anti-slip piles of the slope, so as to achieve the purpose of slope reinforcement and eliminate safety hazards, thereby solving the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the purpose of the utility model is to provide a pile-plate retaining wall slope reinforcement structure used in green construction, including a pre-constructed retaining structure composed of a number of anti-sliding piles arranged side by side at equal intervals and a pile body plate arranged on one side of the anti-sliding piles, and a reinforcement structure composed of an anchor cable body, a steel casing, a rebar, a waist beam, an anchor seal, a drill hole, cement slurry and a water stop strip is provided at the upper end of each anti-sliding pile; wherein:

[0007] The waist beam is fixed to a side wall of the anti-sliding pile away from the pile body plate by a plurality of embedded steel bars, and holes are reserved at the ends of the waist beam on both sides of the anti-sliding pile; the drilling is completed by an anchor drilling rig, the number of the drilled holes is equal to the number of the holes reserved on the waist beam and the positions correspond one to one, and the anchor cable body is inserted into the inner end of the drilled hole after passing through the waist beam, and the cement slurry is poured into the drilled hole with a certain grouting pressure and wraps the anchor cable body therein, and the outer sides of both ends of the steel casing are wrapped and fixed with the water stop strips, one end of the steel casing is placed in the hole reserved on the waist beam, and the other end is placed in the outer end of the drilled hole, and the outer end of the anchor cable body passes through the steel casing, and after the cement slurry reaches the designed strength, the anchor sealing construction is carried out at the outer end of the anchor cable body to seal the end of the anchor cable body.

[0008] As a further improvement of the technical solution, the anti-slide pile and the pile body plate are both reinforced concrete structures, and the anti-slide pile is a rectangular pile or a circular pile.

[0009] As a further improvement of the present technical solution, the waist beam is a cast-in-place reinforced concrete structure, the waist beam is fixed to the side wall of the anti-sliding pile by a number of embedded reinforcement bars, and the longitudinal section of the waist beam is a right-angled trapezoid; the size of the holes reserved on the waist of the waist beam is larger than the outer size of the anchor cable body.

[0010] As a further improvement of the technical solution, the embedded reinforcement is HRB400 steel bar with a diameter of 25 mm, at least nine steel bars are implanted between each waist beam and the corresponding anti-sliding pile, and the length of the embedded reinforcement is 500 mm to 800 mm.

[0011] As a further improvement of the technical solution, the anchor cable body is a steel strand, the cross-sectional diameter of each bundle of the anchor cable body is 15.2 mm or 17.2 mm, and the portion of the anchor cable body located outside the reserved holes of the waist beam is painted with red paint for corrosion protection.

[0012] As a further improvement of the technical solution, the drill hole is constructed by an anchor drilling rig on the side wall of the slope, the drill hole extends obliquely downward and has an inclination angle of 15 to 25 degrees, and the diameter of the drill hole is 130 mm or 150 mm.

[0013] As a further improvement of the technical solution, the water-cement ratio of the cement slurry is 0.38-0.5.

[0014] As a further improvement of the present technical solution, the inner diameter of the steel casing is larger than the outer diameter of the anchor cable body, and the outer diameter of the steel casing is smaller than or equal to the diameter of the reserved hole in the waist beam and the drilled hole. The outer wall of the steel casing is sprayed with an injection molding layer and an anti-rust layer in sequence from the inside to the outside.

[0015] As a further improvement of the technical solution, the waterstop strip is a waterstop strip that expands when exposed to water. The waterstop strip is wrapped around the outer sides of both ends of the steel casing and fixed with steel wire.

[0016] As a further improvement of the technical solution, the sealing anchor is a cast-in-place concrete structure, the concrete grade used for the sealing anchor is C30, and the sealing anchor is in the shape of a square pyramid.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] This green construction is used in the pile-sheet retaining wall slope reinforcement structure.

[0019] 1. The utility model has a simple structure, strong applicability, and reliable technology. It can reinforce the slope of the constructed pile-sheet retaining wall, especially the slope with large displacement, and can effectively reduce the continuous displacement of the slope and increase the service life of the slope retaining structure;

[0020] 2. The concrete waist beam is fixed by embedding reinforcement in the pile body of the anti-sliding pile, and prestressed anchor cables are constructed by opening holes in the wall between the piles on both sides of the pile body. The anchor cables are tensioned and locked to the waist beam, forming a shoulder pole structure in which the pile body and the anchor cables on both sides jointly exert resistance. This can provide greater resistance to control the deformation of the pile body, thereby achieving the purpose of effectively controlling the deformation of the slope. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a side view schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic top view of the overall structure of the utility model;

[0023] Figure 3 It is a partial structural schematic diagram of the reinforcing bar in the utility model;

[0024] Figure 4 For this utility model Figure 3 Schematic diagram of the structure of the AA section.

[0025] In the figure:

[0026] 1. Anti-slip piles; 2. Pile body; 3. Anchor cable body; 4. Steel casing; 5. Embedded reinforcement; 6. Waist beam; 7. Sealing anchor; 8. Drilling; 9. Cement slurry; 10. Water stop strip; A. Top of slope; B. Bottom of slope. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1

[0029] like Figure 1-Figure 4 As shown, this embodiment provides a pile-plate retaining wall slope reinforcement structure used in green construction, including a pre-constructed retaining structure composed of a number of anti-sliding piles 1 arranged side by side at equal intervals and a pile body plate 2 arranged on one side of the anti-sliding piles 1, wherein the top ends of the anti-sliding piles 1 and the pile body plate 2 are both flush with the top A of the slope, the bottom end of the anti-sliding pile 1 extends and is inserted into the bottom surface of the slope, and the bottom end of the pile body plate 2 is flush with the bottom B of the slope;

[0030] Each anti-sliding pile 1 is provided with a reinforcement structure composed of an anchor cable body 3, a steel casing 4, a rebar 5, a waist beam 6, an anchor seal 7, a drill hole 8, cement slurry 9 and a water stop strip 10 at the upper end thereof; wherein:

[0031] The waist beam 6 is fixed to the side wall of the anti-sliding pile 1 away from the pile body plate 2 by a plurality of embedded steel bars 5. Specifically, the steel bars 5 are embedded in the pile body of the constructed anti-sliding pile 1 first, and then the waist beam 6 is cast by supporting the formwork and tying the steel bars. Holes are reserved at the ends of the waist beam 6 on both sides of the anti-sliding pile 1. The drilling holes 8 are completed by the anchor cable drilling rig. The number of the holes reserved on the waist beam 6 is equal and the positions correspond one to one. At the same time, holes are opened on the pile body plates 2 on both sides of the anti-sliding pile 1, and the holes correspond to the drilling holes 8.

[0032] After the borehole 8 is drilled to the reinforcement design depth, the anchor cable body 3 passes through the waist beam 6 and is inserted into the inner end of the borehole 8. The cement slurry 9 is injected into the borehole 8 with a certain injection pressure and wraps the anchor cable body 3 therein. During high-pressure grouting, the borehole 8 is filled with the cement slurry 9 until the cement slurry 9 returns from the hole and the grouting is stopped;

[0033] Water stop strips 10 are wrapped and fixed on the outer sides of both ends of the steel casing 4. One end of the steel casing 4 is placed in the hole reserved on the waist beam 6, and the other end is placed in the outer end of the drilled hole 8, and the outer end of the anchor cable body 3 passes through the steel casing 4.

[0034] After the waist beam 6 and the cement slurry 9 reach the designed strength, the anchor cable body 3 is tensioned and locked, and the sealing anchor 7 is constructed at the outer end of the anchor cable body 3 to seal the end of the anchor cable body 3, thereby completing the construction of the reinforced structure and achieving the anti-slip effect of the anti-slip pile 1 in the form of a shoulder pole together with the anchor cable body 3.

[0035] In this embodiment, the anti-slide pile 1 and the pile body slab 2 are both reinforced concrete structures, and the anti-slide pile 1 is a rectangular pile or a circular pile.

[0036] In this embodiment, the waist beam 6 is a cast-in-place reinforced concrete structure. The waist beam 6 is fixed to the side wall of the anti-sliding pile 1 through a number of embedded steel bars 5. The longitudinal section of the waist beam 6 is a right-angled trapezoidal shape, and the size is preferably 470 mm in width at the top and 550 mm in width at the bottom; the size of the hole reserved on the waist of the waist beam 6 is larger than the outer side size of the anchor cable body 3, and the hole diameter is preferably 110 mm.

[0037] Furthermore, the embedded reinforcement 5 is HRB400 steel bar with a diameter of 25 mm, and nine steel bars are implanted between each waist beam 6 and the corresponding anti-sliding pile 1. The length of the embedded reinforcement 5 is preferably 500 mm.

[0038] In this embodiment, the anchor cable body 3 is a steel strand, and the cross-sectional diameter of each bundle of anchor cable bodies 3 is 15.2 mm or 17.2 mm. The portion of the anchor cable body 3 outside the reserved hole of the waist beam 6 is painted with red paint for corrosion protection.

[0039] In this embodiment, the borehole 8 is constructed on the side wall of the slope by an anchor drilling rig, the borehole 8 extends obliquely downward and has an inclination angle of 15 to 25 degrees, and the diameter of the borehole 8 is 130 mm or 150 mm.

[0040] Furthermore, the water-cement ratio of the cement slurry 9 is 0.38-0.5.

[0041] Furthermore, the inner diameter of the steel casing 4 is larger than the outer diameter of the anchor cable body 3, and the outer diameter of the steel casing 4 is smaller than or equal to the diameter of the reserved holes in the waist beam 6 and the drilled hole 8, with a diameter of 102 mm and a wall thickness of 3.0 mm. The outer wall of the steel casing 4 is sprayed with an injection molding layer and an anti-rust layer in sequence from the inside to the outside.

[0042] Specifically, a polymer wear-resistant material is injection molded on the injection layer; the anti-rust layer includes an epoxy zinc-rich primer, a chlorinated rubber topcoat, and an epoxy micaceous iron intermediate paint located between the epoxy zinc-rich primer and the chlorinated rubber topcoat.

[0043] In this embodiment, the water stop strip 10 is a water stop strip that expands when in contact with water. The water stop strip 10 is wrapped around the outer sides of both ends of the steel casing 4 and fixed with steel wires.

[0044] In this embodiment, the sealing anchor 7 is a cast-in-place concrete structure, the concrete grade used by the sealing anchor 7 is C30, and the sealing anchor 7 is in the shape of a square pyramid. Preferably, the upper surface size is 150mm*150mm, the lower surface size is 250mm*250mm, and the height is 200mm.

[0045] In summary, the pile-board retaining wall slope reinforcement structure used in the green construction of this embodiment has a simple structure, strong applicability, and reliable technology. It can reinforce the constructed pile-board retaining wall slope, especially the slope with large displacement, and can effectively reduce the continuous displacement of the slope and increase the service life of the slope retaining structure.

[0046] The green construction of the utility model is applied to the pile-plate retaining wall slope reinforcement structure, and specifically includes the following steps when in use:

[0047] S1. Before use, the designer needs to calculate and determine the length of the reinforcement anchor cable body 3, the number of anchor cable bodies 3, the vertical construction elevation, the diameter and angle of the drill hole 8 and other construction parameters according to the degree of damage to the slope and the deformation data of the current support status;

[0048] S2, determining the elevation of the waist beam 6 and the position of the reserved holes on the waist beam 6 according to the angle and vertical elevation of the drill hole 8;

[0049] S3. According to the above requirements, the prestressed anchor cable is constructed, the full casing follow-up method is used to construct the drilling hole 8, and the anchor cable body 3 is manufactured at the same time;

[0050] S4, planting steel bars 5 in the anti-sliding pile 1, and the number of the steel bars 5 needs to be determined by calculation;

[0051] S5, supporting the formwork, tying the steel bars and pouring the concrete to construct the waist beam 6, with holes reserved on both sides of the waist beam 6 for inserting the steel casing 4;

[0052] S6. Determine the length of the steel casing 4 according to the distance between the waist beam 6 and the opening of the borehole 8, wrap the water stop strips 10 around both ends of the steel casing 4, and fix them with steel wires; place both ends of the steel casing 4 into the reserved holes of the borehole 8 and the waist beam 6 respectively;

[0053] S7, pass the anchor cable body 3 through the steel casing 4 and place it in the drill hole 8, and a certain length of the anchor cable body 3 needs to be reserved outside the steel casing 4 for tensioning and locking;

[0054] S8, high-pressure grouting is performed on the borehole 8 through the grouting pipe. After the grouting compresses and splits the soil on the hole wall, the hole is filled and overflows to the orifice of the borehole 8. The water stop strip wrapped in the steel casing 4 at the orifice position expands when encountering the slurry and blocks the orifice. After the slurry overflows to the pipe mouth of the steel casing 4, the grouting is stopped;

[0055] S9, after the concrete waist beam 6 is cured to the design strength and the grouting body reaches the design strength, prestress is applied to the anchor cable body 3 according to the design requirements and locked, and the prestressed anchor cables at both ends of each waist beam 6 form a shoulder pole structure.

[0056] S10, construction and sealing anchor 7, construction is completed.

[0057] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A pile-plate retaining wall slope reinforcement structure used in green construction, comprising a pre-constructed retaining structure consisting of a plurality of anti-sliding piles (1) arranged side by side at equal intervals and a pile body plate (2) arranged on one side of the plurality of anti-sliding piles (1), characterized in that: Each anti-sliding pile (1) is provided at its upper end with a reinforcement structure composed of an anchor cable body (3), a steel casing (4), a rebar (5), a waist beam (6), an anchor seal (7), a drill hole (8), cement slurry (9) and a water stop strip (10); wherein: The waist beam (6) is fixed to a side wall of the anti-sliding pile (1) away from the pile body (2) through a plurality of the embedded bars (5); holes are reserved at the ends of the waist beam (6) on both sides of the anti-sliding pile (1); the drill holes (8) are completed by an anchor cable drilling rig; the number of the drill holes (8) and the holes reserved on the waist beam (6) are equal and the positions correspond one to one; the anchor cable body (3) passes through the waist beam (6) and is plugged into the inner end of the drill hole (8); the cement slurry (9) is poured into the drill hole by a certain grouting pressure. The steel casing (4) is provided with a plurality of water stop strips (10) which are wrapped around the outer sides of the two ends of the steel casing (4). One end of the steel casing (4) is placed in a hole reserved on the waist beam (6), and the other end is placed in the outer end of the drilled hole (8). The outer end of the anchor cable body (3) passes through the steel casing (4). After the cement slurry (9) reaches the designed strength, the anchor sealing (7) is constructed at the outer end of the anchor cable body (3) to seal the end of the anchor cable body (3).

2. The green construction method according to claim 1 is applied to the pile-sheet retaining wall slope reinforcement structure, characterized in that: The anti-sliding pile (1) and the pile body plate (2) are both reinforced concrete structures, and the anti-sliding pile (1) is a rectangular pile or a circular pile.

3. The green construction method according to claim 1 is applied to the pile-sheet retaining wall slope reinforcement structure, characterized in that: The waist beam (6) is a cast-in-place reinforced concrete structure. The waist beam (6) is fixed to the side wall of the anti-sliding pile (1) through a plurality of embedded bars (5). The longitudinal section of the waist beam (6) is a right-angled trapezoid. The size of the hole reserved on the waist of the waist beam (6) is larger than the outer side size of the anchor cable body (3).

4. The green construction method according to claim 1 is applied to the pile-sheet retaining wall slope reinforcement structure, characterized in that: The embedded reinforcement (5) is HRB400 steel bar with a diameter of 25 mm. At least nine steel bars are embedded between each waist beam (6) and the corresponding anti-sliding pile (1). The length of the embedded reinforcement (5) is 500 mm to 800 mm.

5. The green construction method for pile-sheet retaining wall slope reinforcement structure according to claim 1, characterized in that: The anchor cable body (3) is a steel strand, and the cross-sectional diameter of each bundle of the anchor cable body (3) is 15.2 mm or 17.2 mm. The portion of the anchor cable body (3) located outside the reserved hole of the waist beam (6) is painted with red paint for corrosion prevention.

6. The green construction method for pile-sheet retaining wall slope reinforcement structure according to claim 1, characterized in that: The drill hole (8) is constructed on the side wall of the slope by an anchor drilling machine. The drill hole (8) extends obliquely downward and has an inclination angle of 15 to 25 degrees. The diameter of the drill hole (8) is 130 mm or 150 mm.

7. The green construction method for pile-sheet retaining wall slope reinforcement structure according to claim 1, characterized in that: The water-cement ratio of the cement slurry (9) is 0.38-0.

5.

8. The green construction method for pile-sheet retaining wall slope reinforcement structure according to claim 1, characterized in that: The inner diameter of the steel casing (4) is greater than the outer diameter of the anchor cable body (3), and the outer diameter of the steel casing (4) is less than or equal to the diameter of the reserved hole of the waist beam (6) and the borehole (8). The outer wall of the steel casing (4) is sprayed with an injection molding layer and an anti-rust layer in sequence from the inside to the outside.

9. The green construction method for pile-sheet retaining wall slope reinforcement structure according to claim 1, characterized in that: The water stop strip (10) is a water stop strip that expands when in contact with water. The water stop strip (10) is wound around the outer sides of both ends of the steel casing (4) and fixed with steel wire.

10. The green construction method for pile-sheet retaining wall slope reinforcement structure according to claim 1, characterized in that: The sealing anchor (7) is a cast-in-place concrete structure. The concrete grade used by the sealing anchor (7) is C30. The sealing anchor (7) is in the shape of a square pyramid.

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