A prestressed cable tensioning construction control system

Abstract

A kind of prestressed anchor cable tensioning construction control system, the present application relates to engineering prestressed construction technical field, it includes concrete support structure platform, anchoring tensioning equipment and anchoring system;Concrete support structure platform is embedded in slope, anchoring system is inserted in concrete support structure platform and slope, and anchoring system is connected with anchoring tensioning equipment, and anchoring tensioning equipment is set on concrete support structure platform.Concrete support structure platform provides the space required for anchoring tensioning, prefabricated cushion pier provides force platform for anchoring tensioning, plays the role of pressure bearing, cushion is arranged between anchoring tensioning equipment and cushion pier, plays the role of buffer, above-mentioned structure provides convenience for anchoring tensioning operation, to increase construction efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering prestressed construction, in particular to a prestressed anchor cable tensioning construction control system. BACKGROUND

[0002] The prestressed anchor cable structure was born in the early 20th century and was first used for mine exploitation. In China, the prestressed anchor cable structure has been rapidly developed since the 21st century and is widely used in slope and landslide support, deep foundation pit support, large underground cavern support, and water conservancy dam reinforcement engineering.

[0003] The prestressed anchor cable is a prestressed steel strand fixed to the slope surface at the outer end and anchored in the stable rock mass within the sliding surface, which directly generates anti-sliding resistance on the sliding surface, increases the anti-sliding friction resistance, and makes the structural surface in a compact state to improve the integrity of the slope rock mass, thereby fundamentally improving the mechanical properties of the rock mass, effectively controlling the displacement of the rock mass, promoting its stability, and achieving the purpose of regulating bedding, landslide, and dangerous rock and stone.

[0004] At present, in the technical fields of water conservancy and hydropower engineering, geotechnical engineering, underground space engineering, slope treatment engineering, traffic road and bridge engineering, port and offshore engineering, etc., due to the limitation of scaffold construction space, the construction efficiency is low, the construction quality is affected, the anchor cable construction is unstable, and great economic losses are caused. At the same time, due to the insufficient strength of the scaffold, the personal safety of the construction personnel also has certain hidden dangers. In addition, the tensioning of the prestressed anchor cable structure is along the axial tension of the steel strand, which does not conform to the actual stress condition of the steel strand engineering, and the steel strand is unevenly stressed due to environmental factors, resulting in unsatisfactory anchoring tensioning effect, and finally affecting the anchoring effect of the anchor cable on the slope. SUMMARY

[0005] The present application aims to overcome the defects and deficiencies of the prior art and provides a prestressed anchor cable tensioning construction control system which can effectively solve the above-mentioned defects.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: it comprises a concrete support structure platform, an anchoring and tensioning device, and an anchoring system; the concrete support structure platform is embedded in the slope, the anchoring system is inserted in the concrete support structure platform and the slope, and the anchoring system is connected with the anchoring and tensioning device, and the anchoring and tensioning device is arranged on the concrete support structure platform;

[0007] The outer side gap of the concrete support structure platform is integrally formed with a cushion pier in a quadrangular prism structure, and a through positioning hole is formed in the cushion pier; a cushion plate with the same hole diameter as the positioning hole is fixed to the outside of the positioning hole, and the cushion plate is fixed to the cushion pier; a movable steel plate is hingedly connected to the lower edge of the outer side gap of the concrete support structure platform by using a hinge, and a support rod is hingedly connected to the bottom of the movable steel plate by using a hinge seat, and the other end of the support rod is inserted into a support hole formed in the side wall of the concrete support structure platform.

[0008] The anchoring tensioning device comprises an operating table and an anchor, the operating table is arranged on the movable steel plate, the anchor is movably arranged with the anchoring system, and the anchor is connected with a pressure pump in the operating table by using a conduit; the conduit and the anchor are connected by using a bolt assembly.

[0009] The anchoring system comprises steel strands, limiting discs, wire binding discs, guide caps and tensioning discs; a plurality of steel strands are arranged in the limiting discs, a plurality of wire binding discs are arranged on the steel strands, guide caps are arranged at the ends of the steel strands, the tensioning discs are arranged outside the anchor, the first ends of the steel strands are arranged in the anchor, and the steel strands pass through the tensioning discs.

[0010] Preferably, a plurality of steel bar holes are formed in the cushion pier at the peripheral position of the positioning hole.

[0011] Preferably, a fixed steel bar is fixed to the bottom of the concrete support structure platform and inclined away from the outer side of the slope, and the fixed steel bar is inserted into the slope.

[0012] Preferably, a pressure-bearing steel plate is fixed to the lower edge of the outer side gap of the concrete support structure platform.

[0013] Preferably, a machine cover is arranged on the operating table by using a hydraulic hinge rod, a computer and a switch button are arranged on the table top of the operating table; universal wheels are arranged at the four corners of the bottom of the operating table.

[0014] Preferably, a spiral bellows is arranged in the middle of the anchor, a plurality of hydraulic telescopic rods and a guide wheel disc are arranged in the spiral bellows, the guide wheel disc is arranged at the central position of the circle surrounded by the plurality of hydraulic telescopic rods, springs are arranged between the outer wall of the guide wheel disc and the plurality of hydraulic telescopic rods, and one end of the spring is sleeved on the hydraulic telescopic rod; the anchor is provided with a movable hole with a hole diameter slightly larger than the diameter of the hydraulic telescopic rod at the positions where the two ends of the hydraulic telescopic rod are connected.

[0015] Preferably, a plurality of wire binding holes are formed in each of the wire binding discs, the number of the wire binding holes in the plurality of wire binding discs decreases from the first end to the tail end of the steel strand, a vertical pulling sleeve is inserted into the wire binding hole and the hole of the tensioning disc, and the steel strand is arranged in the vertical pulling sleeve; a grouting hole is formed at the central position of the wire binding disc.

[0016] The construction method of the present application is as follows:

[0017] Step one, survey the slope, select the appropriate size after surveying, precast concrete support structure platform;

[0018] Step two, according to the design size, excavate the slope, and embed the concrete support structure platform into the slope;

[0019] Step three, on the concrete support structure platform, use drilling equipment to drill the center of the cushion pier to get a positioning hole through the concrete support structure platform, and use air pressure equipment to clean the debris in the positioning hole while drilling;

[0020] Step four, use the installation equipment to place the anchoring system into the positioning hole and insert it into the slope;

[0021] Step five, use the grouting equipment on the concrete support structure platform to grout the positioning hole through the grouting pipe and the grouting hole reserved on the cable tray;

[0022] Step six, on the concrete support structure platform, use the anchoring tensioning equipment to stretch the steel strand to prestress the anchor structure;

[0023] Step seven, after the anchoring tensioning operation is completed, weld the steel bars in the steel bar hole on the cushion pier, then rotate the movable steel plate to a vertical state, and perform secondary pouring of concrete.

[0024] Compared with the prior art, the beneficial effects of the present application are:

[0025] 1. The concrete support structure platform provides the required space for anchoring and tensioning, the precast cushion pier provides a force platform for anchoring and tensioning, plays a pressure bearing role, the cushion plate is arranged between the anchoring and tensioning equipment and the cushion pier, and plays a buffering role. The above structure provides convenience for anchoring and tensioning operation, thereby increasing construction efficiency;

[0026] 2. The movable steel plate structure connected by hinges of the concrete support structure platform provides sufficient space for anchoring and tensioning when anchoring and tensioning, the movable steel plate is fixed by movable hinges and supporting rods, which meets the requirements of anchoring and tensioning site leveling and prevents the machine from overturning, thereby improving construction safety, further increasing construction efficiency, and ensuring construction quality;

[0027] 3. The concrete support structure platform divides the pouring operation of the slope into two periods, after the anchoring and tensioning operation is completed, the movable steel plate can be raised by hinges and used as a formwork for secondary pouring;

[0028] 4. The anchorage part of the anchoring and tensioning equipment, wherein the spiral corrugated pipe, the hydraulic telescopic rod, the guide wheel disc and the spring arranged therein together realize the purpose of adjusting the tensioning direction when the steel strand is prestressed and tensioned, thereby increasing the stability of the anchoring section, improving the reinforcing effect of the anchor structure on the slope, and being more in line with the actual engineering situation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram showing the location of the invention relative to the slope.

[0030] Figure 2 This is a structural schematic diagram of the concrete support structure platform in this invention.

[0031] Figure 3 This is a schematic diagram of the anchoring and tensioning device in this invention.

[0032] Figure 4 This is a schematic diagram of the anchorage in this invention.

[0033] Figure 5 This is a schematic diagram showing the connection of the spring, guide wheel, and hydraulic telescopic rod in this invention.

[0034] Figure 6 This is a schematic diagram of the connection between the anchoring tensioning device and the anchoring system in this invention.

[0035] Figure 7 This is a schematic diagram of the anchoring system in this invention.

[0036] Figure 8 This is an exploded view of the wire harness in this invention.

[0037] Figure 9 This is a construction step diagram of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Slope, 2. Concrete support structure platform, 2. Pier 2-1, Pad 2-2, Positioning hole 2-3, Rebar hole 2-4, Bearing steel plate 2-5, Movable steel plate 2-6, Hinge 2-7, Support rod 2-8, Support hole 2-9, Fixed rebar 2-10, Hinge seat 2-11, Anchoring tensioning equipment, 3. Operating platform 3-1, Anchorage 3-2, Machine cover 3-3, Caster wheel 3-4, Guide pipe 3-5, Spiral corrugated pipe 3-6, Computer 3-7, Switch button 3-8, Pressure pump 3-9, Bolt assembly 3-10, Hydraulic telescopic rod 3-11, Spring 3-12, Guide wheel 3-13, Movable hole 3-14, Anchoring system, 4. Steel strand 4-1, Limiting plate 4-2, Cable bundle plate 4-3, Guide cap 4-4, Tensioning plate 4-5, Cable bundle hole 4-6, Grouting hole 4-7, Vertical tension sleeve 4-8. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] As Figures 1-8 shown, the specific embodiment adopts the technical scheme as follows: it comprises a concrete support structure platform 2, an anchoring tensioning device 3 and an anchoring system 4; the concrete support structure platform 2 is embedded in the slope 1, the anchoring system 4 is inserted in the concrete support structure platform 2 and the slope 1, and the anchoring system 4 is connected with the anchoring tensioning device 3, and the anchoring tensioning device 3 is arranged on the concrete support structure platform 2; the concrete support structure platform 2 provides the required space for anchoring tensioning, meets the requirements of anchoring tensioning site leveling, prevents the machine from overturning, thereby increasing the construction efficiency and improving the construction safety; at the same time, the concrete support structure platform 2 divides the pouring operation of the slope 1 into two periods, and the secondary pouring is carried out after the anchoring tensioning operation is completed;

[0042] The bottom of the concrete support structure platform 2 is fixed with a fixed steel bar 2-10 which is inclined towards the direction away from the outside of the slope 1, and the fixed steel bar 2-10 is inserted into the inside of the slope 1, so that the concrete support structure platform 2 is more stable; a four-prism-structure pad 2-1 is integrally formed on the outer side surface gap of the concrete support structure platform 2, and a through positioning hole 2-3 is formed in the inside of the pad 2-1; a plurality of steel bar holes 2-4 are formed on the edges of the pad 2-1, and steel bars are inserted into the steel bar holes 2-4, which facilitates the secondary pouring; a gasket 2-2 with the same hole diameter as the positioning hole 2-3 is fixed on the outside of the positioning hole 2-3 and on the pad 2-1; the pad 2-1 and the gasket 2-2 provide an operation platform for the anchoring tensioning device 3, and play a pressure-bearing role, thereby improving the anchoring effect and the reinforcing effect of the anchoring system 4 on the slope 1; a movable steel plate 2-6 is hinged to the lower edge of the outer side surface gap of the concrete support structure platform 2 by means of a hinge 2-7, the bottom of the movable steel plate 2-6 is hinged to a support rod 2-8 by means of a hinge seat 2-11, and the other end of the support rod 2-8 is inserted into a support hole 2-9 formed in the side wall of the concrete support structure platform 2; a pressure-bearing steel plate 2-5 is fixed to the lower edge of the outer side surface gap of the concrete support structure platform 2, which is used to prevent the stress concentration in this area from causing the concrete to crack;

[0043] The anchoring tensioning device 3 comprises an operating table 3-1 and an anchor 3-2, the operating table 3-1 is arranged on the movable steel plate 2-6, a machine cover 3-3 is arranged on the operating table 3-1 by using a hydraulic articulated rod, a computer 3-7 and a switch button 3-8 are arranged on the table top of the operating table 3-1, which are used for controlling the operation of the anchoring tensioning device 3; universal wheels 3-4 are arranged at the bottom of the four corners of the operating table 3-1; the anchor 3-2 is connected with a pressure pump 3-9 arranged in the operating table 3-1 by using a conduit 3-5; the conduit 3-5 and the anchor 3-2 are connected by using a bolt assembly 3-10; a spiral bellows 3-6 is arranged at the middle part of the anchor 3-2, a plurality of hydraulic telescopic rods 3-11 and a guide wheel disc 3-13 are arranged in the spiral bellows 3-6, the guide wheel disc 3-13 is arranged at the center position of the circle surrounded by the plurality of hydraulic telescopic rods 3-11, and the outer wall of the guide wheel disc 3-13 and the plurality of hydraulic telescopic rods 3-11 are connected by using springs 3-12, one end of the spring 3-12 is sleeved on the hydraulic telescopic rod 3-11; the spiral bellows 3-6, the hydraulic telescopic rod 3-11, the guide wheel disc 3-13 and the spring 3-12 jointly realize the adjustment of the tensioning direction when the steel strand 4-1 is prestressed and tensioned; according to the change of the pressure borne by each hydraulic telescopic rod 3-11, the spring 3-12 is deformed to control the guide wheel disc 3-13 to control the tensioning direction of the steel strand 4-1, so as to achieve the anchoring tensioning effect meeting the engineering practice, thereby increasing the stability of the anchoring section and further improving the reinforcing effect of the anchoring system 4 on the slope 1, and the anchor 3-2 is provided with a movable hole 3-14 with a diameter slightly larger than the diameter of the hydraulic telescopic rod 3-11 at the position where the two ends of the hydraulic telescopic rod 3-11 are connected, so as to realize the purpose of adjusting the tensioning direction of the steel strand 4-1 when the steel strand 4-1 is prestressed and tensioned;

[0044] The anchoring system 4 comprises a steel strand 4-1, a limiting disc 4-2, a binding disc 4-3, a guide cap 4-4 and a tensioning disc 4-5; a plurality of steel strands 4-1 are arranged in the limiting disc 4-2, and three levels of binding discs 4-3 are arranged on the steel strands 4-1, a guide cap 4-4 is arranged at the end of the steel strand 4-1, one end of the guide cap 4-4 is conical, which is convenient for guiding and installing the anchor cable into the slope 1; the tensioning disc 4-5 is arranged outside the anchor 3-2, the first end of the steel strand 4-1 is arranged in the anchor 3-2 and passes through the tensioning disc 4-5; a plurality of binding holes 4-6 are arranged in the three levels of binding discs 4-3, the number of the binding holes 4-6 in the three levels of binding discs 4-3 decreases from the first end to the end of the steel strand 4-1, a vertical pulling sleeve 4-8 is arranged in the binding hole 4-6 and the opening of the tensioning disc 4-5, and the steel strand 4-1 is arranged in the vertical pulling sleeve 4-8; a grouting hole 4-7 is arranged at the center position of the binding disc 4-3, which is convenient for grouting the anchoring system 4 in the positioning hole 2-3.

[0045] Referring to Figure 9The construction method of the present embodiment is as follows:

[0046] Step one, survey the slope, select appropriate size after surveying, and precast concrete support structure platform 2;

[0047] Step two, excavate the slope 1 according to the design size, and embed the concrete support structure platform 2 into the slope 1;

[0048] Step three, on the concrete support structure platform 2, use drilling equipment to drill the center of the cushion pier 2-1 to obtain a positioning hole 2-3 that penetrates the concrete support structure platform 2, and use air pressure equipment to clean the debris in the positioning hole 2-3 at the same time;

[0049] Step four, use installation equipment to place the anchoring system 4 into the positioning hole 2-3 and insert it into the slope 1;

[0050] Step five, use grouting equipment on the concrete support structure platform 2 to grout the positioning hole 2-3 through the grouting pipe and the grouting hole 4-7 reserved on the cable tray 4-3;

[0051] Step six, stretch the steel strand 4-1 on the concrete support structure platform 2 through the anchoring tensioning equipment 3 to prestress the anchor structure;

[0052] Step seven, after the anchoring tensioning operation is completed, weld the steel bars in the steel bar hole 2-4 on the cushion pier 2-1, then rotate the movable steel plate 2-6 to a vertical state, and perform secondary pouring of concrete.

[0053] Compared with the prior art, the present application has the following advantages:

[0054] 1. The concrete support structure platform provides the required space for anchoring and tensioning, the precast cushion pier provides a force platform for anchoring and tensioning, plays a pressure bearing role, the cushion plate is arranged between the anchoring and tensioning equipment and the cushion pier, and plays a buffering role. The above structure provides convenience for anchoring and tensioning operation, thereby increasing construction efficiency;

[0055] 2. The movable steel plate structure connected by hinges of the concrete support structure platform provides sufficient space for anchoring and tensioning when anchoring and tensioning, the movable steel plate is fixed by movable hinges and supporting rods, which meets the requirements of anchoring and tensioning site leveling and prevents the machine from overturning, thereby improving construction safety, further increasing construction efficiency, and ensuring construction quality;

[0056] 3. The concrete support structure platform divides the pouring operation of the slope into two stages, after the anchoring and tensioning operation is completed, the movable steel plate can be raised by hinges and used as a formwork for secondary pouring;

[0057] 4. The anchorage device of the anchorage tensioning equipment, wherein the spiral corrugated pipe, the hydraulic telescopic rod, the guide wheel disc and the spring arranged in the middle together realize the purpose of adjusting the tensioning direction when the steel strand is prestressed and tensioned, thereby increasing the stability of the anchorage section, improving the reinforcement effect of the cable structure on the slope, and being more in line with the engineering actual situation.

[0058] For those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, and equivalent replacement of part of the technical features can be made, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A prestressed cable tensioning construction control system, characterized by: It contains concrete support structure platform (2), anchoring tensioning equipment (3) and anchoring system (4); concrete support structure platform (2) is embedded in slope (1), anchoring system (4) is inserted in concrete support structure platform (2) and slope (1), and anchoring system (4) is connected with anchoring tensioning equipment (3), and anchoring tensioning equipment (3) is arranged on concrete support structure platform (2); The outer side surface gap of the concrete support structure platform (2) is integrally formed with a pad pier (2-1) in a quadrangular frustum structure, and a through positioning hole (2-3) is formed in the pad pier (2-1); a plurality of steel bar holes (2-4) are formed in the pad pier (2-1) at the peripheral position of the positioning hole (2-3); a gasket (2-2) with the same hole diameter as the positioning hole (2-3) is fixed outside the positioning hole (2-3), and the gasket (2-2) is fixed on the pad pier (2-1); a movable steel plate (2-6) is hinged to the lower edge of the outer side surface gap of the concrete support structure platform (2) by a hinge (2-7), and the bottom of the movable steel plate (2-6) is hinged to a support rod (2-8) by a hinge seat (2-11), and the other end of the support rod (2-8) is inserted into a support hole (2-9) formed in the side wall of the concrete support structure platform (2); The anchoring tensioning equipment (3) includes an operating table (3-1) and an anchor (3-2), the operating table (3-1) is arranged on the movable steel plate (2-6), the anchor (3-2) is movably arranged with the anchoring system (4), and the anchor (3-2) is connected with a pressure pump (3-9) in the operating table (3-1) by a conduit (3-5); the conduit (3-5) and the anchor (3-2) are connected by a bolt assembly (3-10); the middle part of the anchor (3-2) is provided with a spiral bellows (3-6), a plurality of hydraulic telescopic rods (3-11) and a guide wheel disc (3-13) are arranged in the spiral bellows (3-6), the guide wheel disc (3-13) is located at the center position of the circle surrounded by the plurality of hydraulic telescopic rods (3-11), and the outer wall of the guide wheel disc (3-13) and the plurality of hydraulic telescopic rods (3-11) are connected by a spring (3-12), one end of the spring (3-12) is sleeved on the hydraulic telescopic rod (3-11); the anchor (3-2) is provided with a movable hole (3-14) with a diameter slightly larger than the diameter of the hydraulic telescopic rod (3-11) at the connection position of the two ends of the hydraulic telescopic rod (3-11); The anchoring system (4) comprises steel strands (4-1), limiting discs (4-2), binding discs (4-3), guide caps (4-4) and tensioning discs (4-5); a plurality of steel strands (4-1) are arranged in the limiting discs (4-2), a plurality of binding discs (4-3) are arranged on the steel strands (4-1), the ends of the steel strands (4-1) are provided with the guide caps (4-4), the tensioning discs (4-5) are arranged outside the anchorage (3-2), the first ends of the steel strands (4-1) are arranged in the anchorage (3-2) and pass through the tensioning discs (4-5); a plurality of binding holes (4-6) are arranged in the plurality of binding discs (4-3), the number of the binding holes (4-6) in the plurality of binding discs (4-3) decreases from the first ends to the ends of the steel strands (4-1), the binding holes (4-6) and the openings of the tensioning discs (4-5) are both provided with vertical pulling sleeves (4-8), and the steel strands (4-1) are arranged in the vertical pulling sleeves (4-8); the center positions of the binding discs (4-3) are provided with grouting holes (4-7).

2. The prestressed cable tensioning construction control system according to claim 1, characterized in that: The bottom of the concrete support structure platform (2) is fixed with fixed steel bars (2-10) which are inclined towards the direction away from the outer side of the slope (1), and the fixed steel bars (2-10) are inserted into the slope (1).

3. The prestressed cable tensioning construction control system according to claim 1, characterized in that: The outer side of the concrete support structure platform (2) is fixed with pressure-bearing steel plates (2-5) at the lower edges of the notches.

4. The prestressed cable tensioning construction control system according to claim 1, characterized in that: The operating table (3-1) is provided with a machine cover (3-3) by means of a hydraulic hinge rod, and the table top of the operating table (3-1) is provided with a computer (3-7) and a switch button (3-8); the bottom of the operating table (3-1) is provided with universal wheels (3-4) at the four corners.

5. A construction method of the prestressed cable tensioning construction control system according to any one of claims 1-4, characterized in that: Its construction method is as follows: Step (one), the slope is surveyed, and the appropriate size is selected after the survey, and the prefabricated concrete support structure platform (2) is prepared; Step (two), the slope (1) is excavated according to the designed size, and the concrete support structure platform (2) is embedded in the slope (1); Step (three), on the concrete support structure platform (2), the center of the cushion pier (2-1) is drilled by using a drilling equipment to obtain a positioning hole (2-3) penetrating through the concrete support structure platform (2), and the debris in the positioning hole (2-3) is cleaned by using a pneumatic equipment while drilling; Step (four), the anchoring system (4) is placed into the positioning hole (2-3) and inserted into the slope (1) by using an installation equipment; Step (five), the positioning hole (2-3) is grouted by using a grouting equipment through a grouting pipe and the grouting holes (4-7) reserved on the binding discs (4-3) on the concrete support structure platform (2); Step (six), the steel strands (4-1) are stretched by using an anchoring tensioning equipment (3) on the concrete support structure platform (2) to prestress the anchor structure; Step (seven), after the anchoring tensioning operation is completed, the steel bars in the steel bar holes (2-4) on the cushion pier (2-1) are welded, then the movable steel plate (2-6) is rotated to be perpendicular, and secondary pouring of concrete is carried out.

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