A hole guiding device for rock stratum steel sheet pile driving and a construction method thereof

Abstract

The application provides a hole guiding construction device for rock stratum steel sheet pile construction and a construction method thereof, which comprises two same first clamping plates and second clamping plates, is further provided with a U-shaped fixing clamping jaw, and the first clamping plate and the second clamping plate are rotationally symmetrical at the center to form a positioning clamping seat, a mounting gap is formed between the first clamping plate and the second clamping plate, one end of the mounting gap is clamped on a fixed steel sheet pile, the fixing clamping jaw is clamped at one end of the positioning clamping seat, and the other end of the mounting gap is used for positioning a steel sheet pile to be installed; the steel sheet pile to be installed is clamped with the fixed steel sheet pile through the other end of the mounting gap. The first clamping plate and the second clamping plate are rotationally symmetrical at the center to form the positioning clamping seat, are installed on the steel sheet pile in the mode shown in the installation drawing, one end of the positioning clamping seat is used for fixing, and the other end is used for positioning the steel sheet pile being installed, so that the installation positioning precision is high, and the structure is simple and practical.

Description

Technical Field

[0001] The present invention relates to the field of steel sheet pile construction in bridge engineering, and in particular to a hole-guiding construction device for driving steel sheet piles in rock strata and a construction method thereof. Background Art

[0002] Pile foundation cap construction is a crucial component of bridge engineering, and underwater pile foundation cap construction is a key challenge. Failure to implement effective foundation pit support after the completion of the pile group construction and before the cap is excavated can lead to pit deformation and potentially safety hazards.

[0003] Steel sheet pile construction involves driving steel sheet piles into a designated construction area to form a closed cofferdam and support the foundation pit. Steel sheet piles are a type of steel with interlocking edges. These interlocking edges interlock to form a continuous, tightly packed steel structure for retaining walls and earth retaining walls. Suitable for supporting foundation pits in various municipal buildings, highway and bridge foundations, and underground rail transit projects, they offer advantages such as ease of construction, ready-to-install and re-use, high reusability, and zero environmental pollution. In line with the concept of green construction, they are widely used both domestically and internationally.

[0004] Steel sheet pile cofferdam support has two functions: retaining soil and stopping water. It is suitable for general soil geology such as soft soil, silt, clay, sand, etc. When steel sheet piles need to be driven into soft rock layers such as pebble layers, mudstone layers, conglomerate layers, sandstone layers, or interlayers containing moderately weathered hard rocks, it is difficult to drive the steel sheet piles to the designed elevation because the geological rock layers are relatively hard. Summary of the Invention

[0005] The main purpose of the present invention is to provide a hole-guiding construction device and a construction method for driving steel sheet piles in rock strata, so as to solve the problem that when steel sheet piles need to be driven into soft rock strata such as pebble layers, mudstone layers, conglomerate layers, sandstone layers, or interlayers containing moderately weathered hard rocks, the geological rock strata are relatively hard and it is difficult to drive the steel sheet piles to the designed elevation.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: a hole-guiding construction device for driving steel sheet piles in rock formations, comprising two identical first and second clamping plates, and further provided with a U-shaped fixing claw. The first and second clamping plates are rotationally symmetrical with each other to form a positioning clamping seat, and an installation gap is formed between the first and second clamping plates. One end of the installation gap is clamped on the fixed steel sheet pile, and the fixing claw is clamped on one end of the positioning clamping seat. The other end of the installation gap is used to position the steel sheet pile to be installed.

[0007] The steel sheet pile to be installed is clamped with the fixed steel sheet pile through the installation seam at the other end.

[0008] In the preferred embodiment, one end of the first clamping plate is provided with a convex plate matching the concave surface of the steel sheet pile, and the other end is provided with a concave sliding groove matching the convex surface of the steel sheet pile, and the avoidance groove is provided in the middle of the convex plate and the concave sliding groove.

[0009] In the preferred embodiment, a plurality of reinforcing positioning ribs are provided on the rear side of the convex plate, and the rear side of the concave chute is a flat surface.

[0010] In the preferred embodiment, a plurality of positioning grooves are provided at one end of the fixed claw, the positioning grooves cooperate with the strong positioning ribs, a clamping plate is provided at the other end of the fixed claw, and a locking nut passes through the other end of the fixed claw and is rotatably connected to the clamping plate;

[0011] The lock nut is threadedly connected to the fixing claw.

[0012] In a preferred embodiment, a reflective plate is further provided on the fixed clamping claw, and the reflective plate is movably engaged with the fixed clamping claw.

[0013] In a preferred embodiment, a movable clamping seat is provided on the bracket at the lower end of the reflector, and the movable clamping seat is clamped with the positioning groove on the fixed clamping claw.

[0014] In a preferred embodiment, a handle is further provided on the fixing claw.

[0015] The method includes:

[0016] S1. Level the site, use GPS to complete the layout and positioning of the pilot hole piles according to the construction location, and make markings;

[0017] S2. Drilling is carried out using a rotary drilling rig according to the marked positions of the pilot holes. The diameter of the rotary drilling bit is larger than the diameter of the steel sheet piles. Adjacent pilot holes overlap with each other to ensure that the steel sheet piles are driven into the pilot holes after the cement soil is replaced. The depth of the pilot holes should be greater than the bottom elevation of the steel sheet piles to facilitate smooth driving of the steel sheet piles to the elevation.

[0018] S3, after the hole is drilled, the hole cement soil is poured to complete the cement soil replacement construction of various rock layers. The hole drilling skips two hole openings to arrange the construction to ensure that the strength of the cement soil 10 poured into the hole reaches the construction requirements;

[0019] S4. Use a hydraulic vibratory hammer equipped with a crawler crane to carry out steel sheet pile sinking construction;

[0020] S5. The hydraulic vibratory hammer clamps the upper horizontal part of the steel sheet pile, lifts the steel sheet pile, and aligns the steel sheet pile vertically with the guide hole position after the cement soil replacement. The lock buckles of the second and subsequent steel sheet piles are inserted into the lock buckles of the adjacent steel sheet piles. After confirming that the steel sheet piles are accurately positioned and vertically stable, the hydraulic vibratory hammer starts to sink the steel sheet piles.

[0021] The adjacent steel sheet piles are locked tightly, forming a connecting part, the connecting part is in the middle of the lead hole, the cooperation effect of the steel sheet pile and the lead hole is better, and the lead hole uniformly assists the two adjacent steel sheet piles;

[0022] S6, according to the design drawing, a plurality of steel sheet piles are driven to sink to the positions of the plurality of lead holes, are driven one by one, and the driving of the steel sheet piles is completed.

[0023] S7, the lead hole has a hole center, and the connecting part is arranged in coincidence with the hole center of the lead hole, so that the assistance of the two adjacent steel sheet piles of the lead hole is consistent, the resistance of the sinking of the adjacent steel sheet piles is more close, and the supporting effect of the whole is better.

[0024] S8, the steel sheet pile includes a hole part in the lead hole and a steel sheet pile in the soil layer, and the steel sheet pile is located in the replaced cement soil, so that the straightness of the steel sheet pile during piling construction is improved, the sinking in construction can be smooth, and the steel sheet pile is prevented from bending and toppling.

[0025] The vertical positioning method of the steel sheet pile comprises:

[0026] A1, after the first steel sheet pile is installed, the first clamping plate and the second clamping plate are clamped on the first steel sheet pile at one end, and the other end of the first clamping plate and the second clamping plate forms a positioning sliding groove;

[0027] A2, the positioning groove of the fixed clamping jaw is clamped on the reinforcing positioning rib, and then the first clamping plate and the second clamping plate are clamped tightly on the first steel sheet pile at one end through the locking nut to push the pressing plate;

[0028] A3, a reflecting plate is installed on the fixed clamping jaw, and a laser alignment instrument is installed, the laser alignment instrument is laid out on the reflecting plate, the first steel sheet pile is positioned and calibrated, after the position of the first steel sheet pile is calibrated, the second steel sheet pile is installed;

[0029] A3, the second steel sheet pile is clamped by the hydraulic vibration hammer, the second steel sheet pile is positioned at the positioning sliding groove part of the positioning clamping seat, the second steel sheet pile is positioned through the positioning clamping seat, and then the second steel sheet pile is precisely clamped with the first steel sheet pile through the locking buckle.

[0030] The application provides a lead hole construction device for rock stratum steel sheet pile driving and a construction method thereof, and proposes a lead hole cement soil replacement construction method for various rock stratum steel sheet pile driving, the steel sheet pile is driven in the lead hole of various rock stratum cement soil replacement, when the pile is sunk, the friction resistance of the steel sheet pile at the bottom is greatly reduced, and the steel sheet pile is smoothly driven under different rock stratum geological conditions.

[0031] The construction method of cement soil replacement with bored holes using the above-mentioned steel sheet piles is simple, economical, and widely applicable. It has considerable reference value in the field of similar engineering construction and provides important technical guarantees for the construction of bridge foundation projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0033] Figure 1 This is a schematic diagram of the arrangement of the guide holes and the arrangement of the steel sheet piles of the present invention;

[0034] Figure 2 The invention discloses a hole-guiding construction method for driving steel sheet piles;

[0035] Figure 3 Schematic diagram of the steel sheet pile of the present invention;

[0036] Figure 4 This is a schematic diagram of the present invention's pilot hole drilling and cement soil pouring;

[0037] Figure 5 This is a schematic diagram of the construction of a hydraulic vibration hammer according to the present invention;

[0038] Figure 6 This is a left side structural diagram of the positioning card seat of the present invention;

[0039] Figure 7 This is a structural diagram of the positioning card holder of the present invention from the right side;

[0040] Figure 8 This is a left side view of the installation structure of the positioning card seat of the present invention;

[0041] Figure 9 This is a diagram showing the disassembly and installation structure of the positioning card holder of the present invention;

[0042] Figure 10 This is a right side view of the installation structure of the positioning card seat of the present invention;

[0043] Figure 11 This is a diagram of the installation structure of the first card plate and the second card plate of the present invention.

[0044] In the figure: guide hole 1; steel sheet pile 2; inclined portion 201; lock 202; cap 3; geological rock layer 4; cement soil 5; hole mouth 6; hydraulic vibratory hammer 7; positioning holder 8; first clamping plate 801; second clamping plate 802; fixed clamping claw 803; reinforced positioning rib 804; avoidance groove 805; handle 806; locking nut 807; pressing plate 808; reflector plate mounting groove 809; positioning groove 810; laser calibrator 9; steel sheet pile truck 10; reflector 11; movable clamping seat 1101. DETAILED DESCRIPTION

[0045] Example 1

[0046] like Figures 1 to 11 As shown, a hole-guiding construction device for rock formation steel sheet pile injection includes two identical first clamping plates 801 and second clamping plates 802, and is further provided with a U-shaped fixed clamping claw 803. The first clamping plate 801 and the second clamping plate 802 are rotationally symmetrical to form a positioning clamping seat 8, and an installation seam is formed between the first clamping plate 801 and the second clamping plate 802. One end of the installation seam is clamped on the fixed steel sheet pile 2, and the fixed clamping claw 803 is clamped on one end of the positioning clamping seat 8. The other end of the installation seam is used to position the steel sheet pile 2 to be installed. The steel sheet pile 2 to be installed is clamped with the fixed steel sheet pile 2 through the installation seam at the other end. Figure 6-11 In the structure shown, the first card plate 801 and the second card plate 802 are rotationally symmetrical to form a positioning card seat 8, as shown in FIG. Figure 11 The method shown is installed on the steel sheet pile 2, with one end of the positioning bracket 8 being used for fixing and the other end being used for positioning the steel sheet pile 2 being installed.

[0047] In the preferred embodiment, the first clamping plate 801 has a convex plate on one end that mates with the concave surface of the steel sheet pile 2, and a concave groove on the other end that mates with the convex surface of the steel sheet pile 2. The avoidance groove 805 is located between the convex plate and the groove. The first clamping plate 801 and the second clamping plate 802 have the same structure, with the ends of the first clamping plate 801 respectively mate with the two side surfaces of the steel sheet pile 2.

[0048] In the preferred embodiment, the rear side of the convex plate is provided with multiple reinforcing positioning ribs 804, while the rear side of the concave groove is flat. A plurality of positioning slots 810 are provided on one end of the fixed jaw 803, which cooperate with the strong positioning ribs 804. A clamping plate 808 is provided on the other end of the fixed jaw 803, and a locking nut 807 passes through the other end of the fixed jaw 803 and is rotatably connected to the clamping plate 808. The fixed jaw 803 is positioned by the positioning slots 810 and the strong positioning ribs 804, making the installation position of the fixed jaw 803 more precise, ensuring a more accurate installation position of the first clamping plate 801 and the second clamping plate 802. The locking nut 807 is threadedly connected to the fixed jaw 803.

[0049] In the preferred embodiment, a reflector 11 is further provided on the fixed claw 803, and is movably engaged with the fixed claw 803. A movable engagement seat 1101 is provided on a bracket at the lower end of the reflector 11, and the movable engagement seat 1101 engages with the positioning slot 810 on the fixed claw 803. The reflector 11 is used in conjunction with the laser alignment instrument 9.

[0050] In a preferred embodiment, a handle 806 is further provided on the fixing claw 803 to facilitate taking the fixing claw 803 .

[0051] Example 2

[0052] Further illustrate with reference to Example 1, Figure 1-11For the structure shown, the site is flat, and the positioning and setting out of the lead hole 1 pile position are completed using GPS according to the construction location, and marked;

[0053] According to the marked position of the lead hole 1, a rotary drilling rig is used to drill the hole according to the designed elevation. The diameter of the rotary drilling bit is larger than the diameter of the steel sheet pile 2. Adjacent lead holes 1 overlap with each other to ensure that the steel sheet piles 2 are all driven into the lead hole 1 after the cement soil 5 is replaced. The depth of the lead hole 1 should be greater than the bottom elevation of the steel sheet pile 2 to facilitate the smooth driving of the steel sheet pile 2 to the elevation.

[0054] After the lead hole 1 is drilled, cement soil 5 is poured into the lead hole 1 to complete the replacement construction of cement soil 5 in various rock layers. The lead hole 1 is drilled and skipped over two orifices 6 to arrange the construction to ensure that the strength of the cement soil 10 poured into the orifice 6 meets the construction requirements;

[0055] The hydraulic vibratory hammer 7 equipped with a crawler crane is used to carry out the steel sheet pile 2 sinking construction;

[0056] The hydraulic vibratory hammer 7 clamps the upper lateral part of the steel sheet pile 2, lifts the steel sheet pile 2, and aligns the steel sheet pile 2 vertically with the position of the guide hole 1 after the cement soil 5 is replaced. The lock buckle 202 of the second and subsequent steel sheet piles 2 is inserted into the lock buckle 202 of the adjacent steel sheet pile 2. After confirming that the position of the steel sheet pile 2 is accurate and stable, the hydraulic vibratory hammer starts to sink the steel sheet pile 2.

[0057] The locking buckles 202 of adjacent steel sheet piles 2 are tightly connected to form a connection portion. The connection portion is located in the middle of the guide hole 1. The cooperation effect between the steel sheet pile 2 and the guide hole 1 is better, and the guide hole 1 has the same assisting effect on the two adjacent steel sheet piles 2.

[0058] According to the design drawing, multiple steel sheet piles 2 are driven down to the positions of multiple guide holes 1, and driven one by one to complete the driving and closing of the steel sheet piles 2 to form a steel sheet pile 2 cofferdam.

[0059] The lead hole 1 has a hole opening 6 center, and the connecting portion is arranged to coincide with the hole opening 6 center of the lead hole 1. In this arrangement, the assisting effects of the two adjacent steel sheet piles 2 of the lead hole 1 are consistent, so that the resistance to sinking of the adjacent steel sheet piles 2 is closer, so that the overall support effect is better;

[0060] The steel sheet pile 2 includes a hole mouth 6 in the lead hole 1 and a steel sheet pile 2 in the soil layer. The steel sheet piles are all located in the replacement cement soil 5, which improves the straightness of the steel sheet pile 2 during piling construction, enables smooth sinking during construction, and prevents the steel sheet pile 2 from bending or tipping over.

[0061] Example 3

[0062] Further illustrate with reference to Example 2, Figure 1-11 In the structure shown, the vertical positioning method of the steel sheet pile 2 includes:

[0063] After the first steel sheet pile 2 is installed, one end of the first clamping plate 801 and the second clamping plate 802 is clamped on the first steel sheet pile 2, and the other ends of the first clamping plate 801 and the second clamping plate 802 form a positioning groove;

[0064] The positioning groove 810 of the fixed clamping claw 803 is clamped on the reinforcing positioning rib 804, and then the clamping plate 808 is pushed by the locking nut 807 to clamp one end of the first clamping plate 801 and the second clamping plate 802 on the first steel sheet pile 2;

[0065] Install the reflective plate 11 on the fixed claw 803, and then install the laser aligner 9. The laser aligner 9 is placed on the reflective plate 11 to calibrate the position of the first steel sheet pile 2. After the position of the first steel sheet pile 2 is calibrated, the second steel sheet pile 2 is installed.

[0066] The second steel sheet pile 2 is clamped by the hydraulic vibratory hammer 7, and the second steel sheet pile 2 is adjusted to be positioned in the positioning slide groove of the positioning clamp 8. The hydraulic vibratory hammer 7 is pressed down, and the second steel sheet pile 2 is positioned by the positioning clamp 8 and then accurately fastened with the lock 202 of the first steel sheet pile 2.

[0067] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. In other words, equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A drilling construction device for driving steel sheet piles in rock formations, characterized by: The invention comprises two identical first clamping plates (801) and a second clamping plate (802), and is further provided with a U-shaped fixed clamping claw (803). The first clamping plate (801) and the second clamping plate (802) are rotationally symmetrical with each other to form a positioning clamping seat (8), and an installation seam is formed between the first clamping plate (801) and the second clamping plate (802). One end of the installation seam is clamped on a fixed steel sheet pile (2), and the fixed clamping claw (803) is clamped on one end of the positioning clamping seat (8). The other end of the installation seam is used to position the steel sheet pile (2) to be installed. The steel sheet pile (2) to be installed is clamped with the fixed steel sheet pile (2) through the installation seam at the other end; One end of the first clamping plate (801) is provided with a convex plate matching the concave surface of the steel sheet pile (2), and the other end is provided with a concave chute matching the convex surface of the steel sheet pile (2), and the avoidance groove (805) is provided in the middle of the convex plate and the concave chute; A reflective plate (11) is also provided on the fixed clamping claw (803), and the reflective plate (11) is movably engaged with the fixed clamping claw (803).

2. A hole-guiding construction device for driving steel sheet piles in rock formations according to claim 1, characterized in that: The rear side surface of the convex plate is provided with a plurality of reinforcing positioning ribs (804), and the rear side surface of the concave chute is a flat surface.

3. According to claim 2, a hole-guiding construction device for rock sheet pile injection is characterized in that: One end of the clamping claw (803) is provided with a plurality of positioning grooves (810), the positioning grooves (810) cooperate with the reinforcing positioning ribs (804), the other end of the fixed clamping claw (803) is provided with a clamping plate (808), and the locking nut (807) passes through the other end of the fixed clamping claw (803) and is rotatably connected to the clamping plate (808); The locking nut (807) is threadedly connected to the fixing claw (803).

4. The hole-guiding construction device for driving steel sheet piles in rock formations according to claim 1 is characterized by: A movable clamping seat (1101) is provided on the bracket at the lower end of the reflector plate (11), and the movable clamping seat (1101) is clamped with the positioning groove (810) on the fixed clamping claw (803).

5. The hole-guiding construction device for driving steel sheet piles in rock formations according to claim 1 is characterized by: The fixed claw (803) is also provided with a handle (806).

6. The construction method of the hole-guiding construction device for rock stratum steel sheet pile injection according to claim 3, characterized in that: The method includes: S1. Level the site and use GPS to complete the guide hole (1) according to the construction location. Position the piles and mark them; S2. Drilling is performed using a rotary drilling rig according to the marked position of the lead hole (1). The drilling is performed according to the designed elevation. The diameter of the rotary drilling bit is larger than the diameter of the steel sheet pile (2). Adjacent lead holes (1) overlap with each other to ensure that the steel sheet pile (2) is driven into the lead hole (1) after the cement soil (5) is replaced. The depth of the lead hole (1) is greater than the bottom elevation of the steel sheet pile (2) to facilitate the smooth driving of the steel sheet pile (2) to the elevation. S3, after the pilot hole (1) is drilled, cement soil (5) is poured into the pilot hole (1) to complete the replacement construction of cement soil (5) in various rock layers. The pilot hole (1) is drilled to skip two hole openings (6) and the construction is arranged to ensure that the strength of the cement soil (5) poured into the hole openings (6) meets the construction requirements; S4, using a hydraulic vibratory hammer (7) equipped with a crawler crane to perform pile sinking construction of the steel sheet pile (2); S5, the hydraulic vibration hammer (7) clamps the upper end transverse portion of the steel sheet pile (2), lifts the steel sheet pile (2), and makes the steel sheet pile (2) vertically aligned with the position of the guide hole (1) after the cement soil (5) is replaced, and the lock buckle (202) of the second and subsequent steel sheet piles (2) is inserted into the lock buckle (202) of the adjacent steel sheet pile (2), and confirms that the position of the steel sheet pile (2) is accurate and stable, and the hydraulic vibration hammer starts to sink the steel sheet pile (2); The locking buckles (202) of adjacent steel sheet piles (2) are tightly connected to form a connection portion, and the connection portion is located in the middle of the guide hole (1). The steel sheet pile (2) and the guide hole (1) have a better matching effect, and the guide hole (1) has the same assisting effect on the two adjacent steel sheet piles (2). S6. According to the design drawing, multiple steel sheet piles (2) are driven and sunk to the positions of multiple guide holes (1), and driven one by one to complete the driving and closing of the steel sheet piles (2) to form a steel sheet pile (2) cofferdam; S7, the guide hole (1) has a hole opening (6) center, and the connecting portion is arranged to coincide with the hole opening (6) center of the guide hole (1). In this arrangement, the assisting effects of the two adjacent steel sheet piles (2) of the guide hole (1) are consistent, so that the resistance to sinking of the adjacent steel sheet piles (2) is closer, so that the overall support effect is better; S8, the steel sheet pile (2) includes the hole mouth (6) in the guide hole (1) and the steel sheet pile (2) in the soil layer. The steel sheet pile is located in the replacement cement soil (5), which improves the straightness of the steel sheet pile (2) during the piling construction, enables it to sink smoothly during the construction, and prevents the steel sheet pile (2) from bending or falling.

7. The construction method of the hole-guiding construction device for rock stratum steel sheet pile injection according to claim 6, characterized in that: The vertical positioning method of the steel sheet pile (2) includes: A1. After the first steel sheet pile (2) is installed, one end of the first clamping plate (801) and the second clamping plate (802) is clamped on the first steel sheet pile (2), and the other ends of the first clamping plate (801) and the second clamping plate (802) form a positioning slot; A2. The positioning groove (810) of the fixed clamping claw (803) is clamped on the reinforcing positioning rib (804), and then the clamping plate (808) is pushed through the locking nut (807) to clamp one end of the first clamping plate (801) and the second clamping plate (802) on the first steel sheet pile (2); A3. Install a reflective plate (11) on the fixed claw (803), then install a laser calibrator (9), place the laser calibrator (9) on the reflective plate (11), and perform positioning and calibration on the first steel sheet pile (2). After the position of the first steel sheet pile (2) is calibrated, start installing the second steel sheet pile (2); A3. The second steel sheet pile (2) is clamped by the hydraulic vibration hammer (7), and the second steel sheet pile (2) is adjusted to be positioned at the positioning slot of the positioning clamp (8). The second steel sheet pile (2) is pressed down by the hydraulic vibration hammer (7), and the second steel sheet pile (2) is positioned by the positioning clamp (8) and then accurately fastened with the lock buckle (202) of the first steel sheet pile (2).

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