CN109930595B - Vibration immersed tube light active material pile and construction method - Google Patents
Vibration immersed tube light active material pile and construction method Download PDFInfo
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- CN109930595B CN109930595B CN201910174536.8A CN201910174536A CN109930595B CN 109930595 B CN109930595 B CN 109930595B CN 201910174536 A CN201910174536 A CN 201910174536A CN 109930595 B CN109930595 B CN 109930595B
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Abstract
The invention relates to a light active material pile with a vibrating immersed tube, which comprises a material filling cloth bag fixing system, a dust control device, a steel bar tensioning device and a steel bar hoisting device; the material filling cloth bag fixing system comprises a pile tip, a cloth bag, an immersed tube, a steel ring, a vertical rod, a vertical hole and a vertical groove; the dust control device comprises a feed inlet, a dustproof tent, a dustproof plate, a shower head and a water pipe; the steel bar tensioning device comprises longitudinal bars, steel bar holes, embedding circular grooves, side face support circular holes, vertical support supports, support ends, an anchorage device and bonding concrete; the steel bar hoisting device comprises a protective layer interval partition plate, a hoisting ring, a hoisting rope, a hoisting plate, a hoisting machine traction rope and a guide flaring. The invention has the beneficial effects that: the cloth bag supporting system formed by combining the vertical rods and the steel rings can prevent poor pile-forming quality caused by incomplete unfolding of the cloth bag during construction of the immersed tube cast-in-place pile; the guide flaring designed by the invention can quickly guide the downward placement of the reinforcement cage.
Description
Technical Field
The invention relates to a vibration immersed tube cast-in-place pile, in particular to a vibration immersed tube light active material pile and a construction method.
Background
The soft foundation generally has overlarge natural water content, complicated soil layer distribution and low bearing capacity, and is easy to slide or solidify and settle under the action of load, so that the problem that the strength and deformation of the foundation cannot meet the design requirements often occurs to buildings on the soft foundation, and measures are often needed to be taken for foundation treatment. The pile gene has the advantages of good earthquake resistance, small settlement, high bearing capacity and the like, and is widely applied to soft soil foundation reinforcement engineering.
The immersed tube bored concrete pile is widely applied to a soft soil foundation, but the construction process of the existing immersed tube bored concrete pile still has a little defect, when grouting, a cloth bag cannot be completely propped open, and a pouring material cannot be filled, so that the thickness of a protective layer is too small, and even a steel bar is exposed; in addition, during the construction of the cast-in-place pile, a large amount of dust is generated to pollute the surrounding environment; when the reinforcement cage is hoisted, the coincidence of the section centroid of the reinforcement cage and the centroid of the immersed tube cannot be ensured, so that the thickness of a protective layer of the cast-in-place pile is uneven, and the side with smaller thickness cannot meet the engineering requirements; the existing prestressed pile foundation adopts a precast pile, and the cast-in-place pile foundation cannot be tensioned with prestress.
In summary, it is very important to find a light active material pile of vibration immersed tube and construction method that can completely open the cloth bag, control dust emission, precisely hoist the reinforcement cage and stretch the reinforcement.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a vibration immersed tube light active material pile and a construction method.
The light active material pile of the vibration immersed tube comprises a material filling cloth bag fixing system, a dust control device, a steel bar tensioning device and a steel bar hoisting device;
the material filling cloth bag fixing system comprises a pile tip, a cloth bag, an immersed tube, a steel ring, a vertical rod, a vertical hole and a vertical groove, wherein the pile tip is arranged at the lower end of the immersed tube, and a feeding hole is formed in the upper part of the immersed tube; the sinking pipe is provided with a vertical groove, and the cloth bag is placed in the sinking pipe; the vertical rod penetrates through a vertical hole in the steel ring, the vertical rod consists of an inner rod, an outer rod, spiral blades and a thin rope, the steel ring is clamped and fixed between the spiral blades on two sides, the steel ring is placed in a vertical groove in the immersed tube, and the steel ring is externally propped against and props up the cloth bag;
the dust control device comprises a feed inlet, a dustproof tent, a dustproof plate, a shower head and a water pipe, and the dustproof plate is arranged at the top of the immersed pipe; the feed inlet is arranged on the side surface of the immersed tube, and a dustproof tent is built on the outer side of the feed inlet and comprises a dustproof curtain, a support column and a top plate; a shower head and a water pipe are arranged above the top plate;
the steel bar tensioning device comprises longitudinal bars, steel bar holes, embedding circular grooves, side face shoring circular holes, vertical shorings, shoring end heads, an anchorage device and bonding concrete, a steel bar cage is placed in the immersed tube and is tightly attached to a pile tip, the bottom of the immersed tube is filled with the bonding concrete, and the pile tip is bonded with the bottom of the steel bar cage through the bonding concrete; a tensioning tool is arranged at the top of the immersed tube, the tensioning tool comprises an embedding circular groove, a vertical top support, a top support end and an anchorage device, the embedding circular groove is connected with the upper end of the immersed tube in a matching way, and a longitudinal bar at the top of the reinforcement cage penetrates through a reinforcement hole of the embedding circular groove and is fixed through the anchorage device; vertical top braces and top brace end heads are correspondingly arranged above the top brace round holes on the side surfaces of the embedding circular grooves;
the steel bar hoisting device comprises a protective layer spacing partition plate, a lifting ring, a lifting rope, a lifting plate, a crane traction rope and a guide flaring, the lifting rope, the lifting ring and the lifting plate form the hoisting device, the lifting plate is connected with the steel bar cage through the lifting rope and the lifting ring, and the top of the lifting plate is connected with the crane traction rope; the side wall of the immersed tube is provided with a protective layer spacing clapboard, the upper end of the protective layer spacing clapboard is connected with a guide flaring, and the flaring is wide at the top and narrow at the bottom.
Preferably, the method comprises the following steps: the outer edge of the outer rod is uniformly provided with a circle of spiral leaves, and the thin rope on the inner rod is connected with the spiral leaves through a hole core.
Preferably, the method comprises the following steps: the diameter of the pile tip is larger than that of the immersed tube.
Preferably, the method comprises the following steps: the preformed groove at the bottom of the guide flaring is spliced with the top connecting bulge on the protective layer partition plate and fixed by the fixing nail.
The construction method of the vibration immersed tube light active material pile comprises the following steps:
1) setting a sinking pipe; the geotextile bags connected with the outer immersed tubes and the prefabricated pile tips are arranged to the designed depth;
2) splicing the vertical rod and the steel ring; rotating the inner rod to contract the spiral blades and reduce the cross-sectional area of the vertical rod, releasing the inner rod after the vertical rod smoothly passes through the vertical hole in the steel ring to stretch the spiral blades, and clamping and fixing the steel ring between the spiral blades at two sides;
3) hoisting the vertical rod; placing the spliced vertical rod and the steel ring into the immersed tube, fixing the steel ring at a specific position by the spiral blade on the vertical rod, and supporting the geotextile bag by the steel ring;
4) hoisting a reinforcement cage; a crane is utilized to lower the steel reinforcement cage which is bound outside the field into the immersed tube, a protective layer spacing clapboard is placed on the inner wall of the immersed tube before the steel reinforcement cage is lowered, and a guide flaring is connected on the protective layer spacing clapboard;
5) dismantling the protective layer spacing partition plate and the guide flaring on the protective layer spacing partition plate; after the steel reinforcement cage is placed, detaching the spacing partition plate of the protective layer and the guide flaring on the spacing partition plate;
6) constructing a dustproof tent; a dustproof awning is built around the feed port, a frame of the dustproof awning is formed by combining supporting columns and a top plate, the frame can be quickly built by inserting the supporting columns into grooves in the top plate, and then a dustproof curtain is arranged on the outer side of the frame; draining water above the top plate in the construction process of the immersed tube cast-in-place pile to wet the dustproof curtain, wherein dust generated in the casting process meets the wet dustproof curtain and is adsorbed;
7) pouring bonding concrete; pouring concrete from the feeding hole to bond the reinforcing steel bars at the bottom and the pile tip together;
8) stretching the steel bars; after the bonding concrete is solidified, placing a tensioning tool on the top of the immersed tube, inserting the embedding circular groove into the immersed tube, fixing the tensioning tool on the top of the immersed tube, simultaneously enabling the longitudinal bar on the top of the reinforcement cage to pass through the reinforcement hole, then arranging a vertical jacking on the side surface of the embedding circular groove, then tensioning the longitudinal bar, and fixing the tensioned longitudinal bar by using an anchorage device;
9) pouring a light active material; the light active mixture after being mixed evenly is sent into the immersed tube from the feeding hole, and the immersed tube is vibrated continuously when being sent, so that the light active mixture is quickly and evenly poured into the geotextile bags.
The invention has the beneficial effects that:
(1) compared with the prior art, the cloth bag supporting system formed by combining the vertical rods and the steel rings can prevent the poor pile forming quality caused by incomplete unfolding of the cloth bag during construction of the immersed tube cast-in-place pile.
(2) The invention arranges the cloth bag in the immersed tube, which can effectively gather the perfusion material together and prevent the perfusion material from flowing out to cause waste.
(3) The dustproof cover designed by the invention seals the feed inlet, the dustproof curtain is hung on the outer side of the dustproof cover, and then the top of the dustproof cover is watered to wet the dustproof curtain, so that dust can be effectively prevented from escaping.
(4) The tensioning tool designed by the invention can be used for tensioning the longitudinal steel bars of the cast-in-place pile. The pile tip width is greater than the width of the immersed tube to prevent longitudinal movement of the pile tip during tensioning.
(5) The protective layer spacing partition plate designed by the invention can accurately hoist the steel reinforcement cage, and prevents the influence on the pile forming quality caused by the over-small thickness of the concrete protective layer on one side due to the fact that the hoisting position of the steel reinforcement cage is not centered.
(6) The guide flaring designed by the invention can quickly guide the downward placement of the reinforcement cage.
Drawings
FIG. 1 is a schematic view of a vibratory immersed tube lightweight active material pile;
FIG. 2 is a schematic view of the potting material bag fastening system of FIG. 1;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a top view of the stem of FIG. 2;
FIG. 5 is a schematic view of the vertical rod fixed helical blade of FIG. 2;
FIG. 6 is a schematic view of the dust control apparatus of FIG. 1;
FIG. 7 is a top plan view of the top plate of FIG. 6;
FIG. 8 is a schematic illustration of the dust canopy frame of FIG. 6 being spliced;
FIG. 9 is a schematic view of a rebar hoisting device;
FIG. 10 is a detail view taken at splice A in FIG. 9;
fig. 11 is a schematic view of the reinforcing bar tensioning apparatus of fig. 1;
fig. 12 is a top view of the reinforcing bar tensioning device of fig. 11;
fig. 13 is a schematic view of the tension device of fig. 11 connected to a sink pipe.
Description of reference numerals: 1-pile tip; 2, a cloth bag; 3, sinking the pipe; 4-a steel ring; 5, erecting a rod; 6-vertical hole; 7-vertical groove; 8-steel ring sharp rib; 9-ground; 10-an inner rod; 11-a string; 12-helical leaves; 13-outer pole; 14-a pore core; 15-a feed inlet; 16-dustproof awning; 17-dust-proof curtain; 18-a support column; 19-dust guard; 20-a top plate; 21, a groove; 22-a shower; 23-a water pipe; 24-water; 25-a grip; 26-stirrup; 27-longitudinal ribs; 28-reinforcing steel bar holes; 29-embedding the round slot; 30-supporting the round hole on the side surface; 31-vertical top bracing; 32-a top bracing end; 33-an anchorage device; 34-bonding concrete; 35-protective layer spacing spacer; 36-a hoisting ring; 37-lifting rope; 38-hanger plate; 39-crane haulage rope; 40, guiding flaring; 41-a preformed groove; 42-top connecting projection; 43-fixing nail.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
The light active material pile of the vibration immersed tube comprises a material filling cloth bag fixing system, a dust raising control device, a steel bar tensioning device and a steel bar hoisting device.
The material pouring cloth bag fixing system comprises a pile tip 1, a cloth bag 2, an immersed tube 3, a steel ring 4, a vertical rod 5, a vertical hole 6 and a vertical groove 7, wherein the pile tip 1 is arranged at the lower end of the immersed tube 3, and a feeding hole 15 is formed in the upper part of the immersed tube 3; the immersed tube 3 is provided with a vertical groove 7, and the cloth bag 2 is placed in the immersed tube 3; the vertical rod 5 penetrates through the vertical hole 6 in the steel ring 4, the vertical rod 5 is composed of an inner rod 10, an outer rod 13, spiral blades 12 and a string 11, the inner rod 10 is rotated in the perforation process, the spiral blades 12 are contracted, the cross-sectional area of the vertical rod is reduced, after the vertical rod smoothly penetrates through the vertical hole 6 in the steel ring 4, the inner rod 10 is loosened, the spiral blades 12 are unfolded, and therefore the steel ring 4 is clamped and fixed between the spiral blades 12 on two sides, and the downward sliding of the steel ring 4 can be prevented. The steel ring 4 is placed in the vertical groove 7 in the immersed tube 3, and the cloth bag 2 is propped up and opened outside the steel ring 4, so that the immersed tube can be conveniently filled. Spiral leaves 12 are uniformly arranged on one circle of the outer edge of the outer rod 13, and the thin rope 11 on the inner rod 10 is connected with the spiral leaves 12 through a hole core 14. The steel ring 4 is provided with a steel ring sharp rib 8.
The dust control device comprises a feed inlet 15, a dustproof awning 16, a dustproof plate 19, a shower head 22 and a water pipe 23, wherein the dustproof plate 19 is arranged at the top of the immersed tube 3 to prevent dust in the pouring process from being emitted from the top; the feed inlet 15 is arranged on the side surface of the immersed tube, a dustproof awning 16 is built outside the feed inlet 15, and the dustproof awning 16 comprises a dustproof curtain 17, a support column 18 and a top plate 20; a shower head 22 and a water pipe 23 are arranged above the top plate 20, the light material is poured from the feeding hole 15, then the top of the dustproof awning 16 is watered, the dustproof curtain 17 is wetted, and the dust generated in the material pouring process is reduced. The dust guard 19 is provided with a grip 25. The lower surface of the top plate 20 is provided with a groove 21, the supporting column 18 is inserted into the groove 21 to form a frame structure, and the dustproof curtain 17 is arranged outside the frame.
The steel bar tensioning device comprises longitudinal bars 27, steel bar holes 28, an embedded circular groove 29, a side face top support circular hole 30, a vertical top support 31, a top support end 32, an anchorage device 33 and bonding concrete 34, a steel bar cage is placed in the immersed tube 3 and is tightly attached to the pile tip 1, a feed port 15 is formed in one side of the upper portion of the immersed tube 3, the bonding concrete 34 is poured into the bottom of the immersed tube 3, and the pile tip 1 and the bottom of the steel bar cage are bonded together through the bonding concrete 34; a tensioning tool is arranged at the top of the immersed tube 3, the tensioning tool comprises an embedding circular groove 29, a vertical top support 31, a top support end 32 and an anchorage device 33, the embedding circular groove 29 is connected with the upper end of the immersed tube 3 in a matching way, and a longitudinal bar 27 at the top of the reinforcement cage penetrates through a reinforcement hole 28 of the embedding circular groove 29 and is fixed through the anchorage device 33; the vertical top bracing 31 and the top bracing end 32 are correspondingly arranged above the side top bracing round hole 30 of the embedding round groove 29. The diameter of pile toe 1 is greater than the diameter of immersed tube 3, and when carrying out reinforcing bar stretch-draw, immersed tube 3 keeps motionless under vertical shore 31 effect, and pile toe 1 diameter is greater than the diameter of immersed tube 3, therefore has also been restricted vertical slip, ensures going on smoothly of reinforcing bar stretch-draw.
The steel bar hoisting device comprises a protective interlayer spacing partition plate 35, a lifting ring 36, a lifting rope 37, a hoisting plate 38, a crane hauling rope 39 and a guide flaring 40, wherein the lifting rope 37, the lifting ring 36 and the hoisting plate 38 form a hoisting device, the hoisting plate 38 is connected with a steel bar cage through the lifting rope 37 and the lifting ring 36, and the top of the hoisting plate 38 is connected with the crane hauling rope 39; the lateral wall of immersed tube 3 sets up protective layer interval baffle 35, and guide flaring 40 is connected to protective layer interval baffle 35 upper end, and the flaring is wide from top to bottom narrow, and the lifting of the steel reinforcement cage of being convenient for is put, and protective layer interval baffle 35 can make the steel reinforcement cage accurately place, and the concrete protective layer thickness of avoiding both sides is inhomogeneous, influences construction quality. The preformed groove 41 at the bottom of the guiding flaring 40 is spliced with the top connecting protrusion 42 on the protective layer spacing plate 35 and fixed by the fixing nail 43.
The construction method of the vibration immersed tube light active material pile comprises the following steps:
(1) and (5) setting a sinking pipe. And (4) utilizing a piling hammer to pile the geotextile bag connected with the outer immersed tube and the prefabricated pile tip to a designed depth.
(2) The vertical rod and the steel ring are spliced. The inner rod 10 is rotated to contract the spiral leaves 12, the cross-sectional area of the vertical rod 5 is reduced, after the vertical rod smoothly passes through the vertical hole 6 on the steel ring 4, the inner rod is released to stretch the spiral leaves, and the steel ring is clamped and fixed between the two spiral leaves.
(3) And (4) hoisting and placing the vertical rod. Utilize the loop wheel machine to put into immersed tube 3 with spliced montant 5 and steel ring 4, the spiral leaf on the montant is fixed the steel ring in the particular position, prevents that the steel ring from gliding, and the steel ring plays the effect of supporting geotechnological sack, and when avoiding filling material, geotechnological sack can't stretch out and influence construction quality.
(4) And (5) hoisting the reinforcement cage. Utilize the loop wheel machine to transfer the steel reinforcement cage that the off-site ligature is good to the immersed tube, need place protection layer interval baffle 35 at the immersed tube inner wall before putting down to connect guide flaring 40 on protection layer interval baffle, the transfer that guide flaring can effectual guide steel reinforcement cage, protection layer interval baffle then can ensure that the concrete protection layer thickness of stake does not take place the deviation.
(5) And removing the protective layer spacing partition plate and the guide flaring on the protective layer spacing partition plate. After the steel reinforcement cage is placed, the protective interlayer spacing partition plate and the guide flaring on the protective interlayer spacing partition plate need to be detached.
(6) And (5) constructing a dustproof tent. The dustproof awning 16 is built around the feed port 15, a frame of the dustproof awning is formed by combining four support columns 18 and a top plate 20, the support columns are inserted into grooves 21 in the top plate, the frame can be quickly built, and then the dustproof curtains 17 are arranged on the outer side of the frame. Need in immersed tube bored concrete pile work progress drainage above the roof to moist dustproof curtain, the dust that the process of filling produced meets moist dustproof curtain, will be adsorbed.
(7) And (5) pouring the bonding concrete. And pouring concrete from the feeding hole to bond the reinforcing steel bars at the bottom and the pile tip together.
(8) And (5) tensioning the steel bars. After the bonding concrete 34 is solidified, a tensioning tool is placed at the top of the immersed tube, the embedding circular groove 29 is inserted into the immersed tube, the tensioning tool is fixed at the top of the immersed tube, meanwhile, the longitudinal rib 27 at the top of the reinforcement cage needs to penetrate through the reinforcement hole 28, then, a vertical top support 31 is arranged on the side face of the embedding circular groove, the tensioning tool is prevented from moving in the tensioning process, then, the longitudinal rib is tensioned, and the tensioned longitudinal rib is fixed by an anchorage device 33.
(9) And pouring the light active material. The light active mixture after being mixed uniformly is sent into the immersed tube from the feeding hole, and the immersed tube is vibrated continuously during sending so that the light active mixture can be poured into the geotextile bag quickly and uniformly.
Claims (3)
1. A light active material pile of a vibration immersed tube is characterized by comprising a material filling cloth bag fixing system, a dust control device, a steel bar tensioning device and a steel bar hoisting device;
the material filling cloth bag fixing system comprises a pile tip (1), a cloth bag (2), an immersed tube (3), a steel ring (4), a vertical rod (5), a vertical hole (6) and a vertical groove (7), wherein the pile tip (1) is arranged at the lower end of the immersed tube (3), and a feeding hole (15) is formed in the upper part of the immersed tube (3); the immersed tube (3) is provided with a vertical groove (7), and the cloth bag (2) is placed in the immersed tube (3); the vertical rod (5) penetrates through a vertical hole (6) in the steel ring (4), the vertical rod (5) consists of an inner rod (10), an outer rod (13), spiral blades (12) and a string (11), the steel ring (4) is clamped and fixed between the spiral blades (12) on two sides, the steel ring (4) is placed in a vertical groove (7) in the immersed tube (3), and the steel ring (4) is externally propped up and props open the cloth bag (2); spiral blades (12) are uniformly arranged on one circle of the outer edge of the outer rod (13), and the thin rope (11) on the inner rod (10) is connected with the spiral blades (12) through a hole core (14); the diameter of the pile tip (1) is larger than that of the immersed tube (3);
the dust control device comprises a feed inlet (15), a dustproof tent (16), a dustproof plate (19), a shower head (22) and a water pipe (23), and the dustproof plate (19) is arranged at the top of the immersed tube (3); the feed port (15) is arranged on the side surface of the immersed tube, a dustproof tent (16) is built on the outer side of the feed port (15), and the dustproof tent (16) comprises a dustproof curtain (17), a support column (18) and a top plate (20); a shower head (22) and a water pipe (23) are arranged above the top plate (20);
the steel bar tensioning device comprises longitudinal bars (27), steel bar holes (28), an embedding circular groove (29), a side face jacking circular hole (30), a vertical jacking (31), a jacking end (32), an anchorage device (33) and bonding concrete (34), a steel bar cage is placed in the immersed tube (3) and is tightly attached to the pile tip (1), the bonding concrete (34) is poured into the bottom of the immersed tube (3), and the pile tip (1) and the bottom of the steel bar cage are bonded together through the bonding concrete (34); a tensioning tool is arranged at the top of the immersed tube (3), the tensioning tool comprises an embedding circular groove (29), a vertical top support (31), a top support end (32) and an anchorage device (33), the embedding circular groove (29) is connected with the upper end of the immersed tube (3) in a matching way, and a longitudinal bar (27) at the top of the reinforcement cage penetrates through a reinforcement hole (28) of the embedding circular groove (29) and is fixed through the anchorage device (33); a vertical top brace (31) and a top brace end (32) are correspondingly arranged above the side top brace round hole (30) of the embedding round groove (29);
the steel bar hoisting device comprises a protective layer spacing partition plate (35), a lifting ring (36), a lifting rope (37), a hoisting plate (38), a crane hauling rope (39) and a guide flaring (40), wherein the lifting rope (37), the lifting ring (36) and the hoisting plate (38) form the hoisting device, the hoisting plate (38) is connected with a steel bar cage through the lifting rope (37) and the lifting ring (36), and the top of the hoisting plate (38) is connected with the crane hauling rope (39); the side wall of the immersed tube (3) is provided with a protective layer spacing clapboard (35), the upper end of the protective layer spacing clapboard (35) is connected with a guide flaring (40), and the flaring is wide at the top and narrow at the bottom.
2. A vibratory immersed tube lightweight active material pile as claimed in claim 1, wherein: the preformed groove (41) at the bottom of the guide flaring (40) is spliced with the top connecting bulge (42) on the protective layer spacing plate (35) and fixed by a fixing nail (43).
3. A method of constructing a vibratory driven heavy pipe lightweight active material pile as defined in claim 1, comprising the steps of:
1) setting a sinking pipe; the geotextile bags connected with the outer immersed tubes and the prefabricated pile tips are arranged to the designed depth;
2) splicing the vertical rod and the steel ring; rotating the inner rod (10) to contract the spiral leaves (12) and reduce the cross-sectional area of the vertical rod (5), releasing the inner rod after the vertical rod smoothly passes through the vertical hole (6) on the steel ring (4) to stretch the spiral leaves, and clamping and fixing the steel ring between the spiral leaves at two sides;
3) hoisting the vertical rod; the spliced vertical rod (5) and the steel ring (4) are put into the immersed tube (3), the spiral blade on the vertical rod fixes the steel ring at a specific position, and the steel ring supports the geotextile bag;
4) hoisting a reinforcement cage; a crane is utilized to lower the steel reinforcement cage which is bound outside the field into the immersed tube, a protective layer spacing clapboard (35) is placed on the inner wall of the immersed tube before the steel reinforcement cage is lowered, and a guide flaring (40) is connected on the protective layer spacing clapboard;
5) dismantling the protective layer spacing partition plate and the guide flaring on the protective layer spacing partition plate; after the steel reinforcement cage is placed, detaching the spacing partition plate of the protective layer and the guide flaring on the spacing partition plate;
6) constructing a dustproof tent; a dustproof tent (16) is built around the feed port (15), a frame of the dustproof tent is formed by combining support columns (18) and a top plate (20), the frame can be quickly built by inserting the support columns into grooves (21) in the top plate, and then a dustproof curtain (17) is arranged on the outer side of the frame; draining water above the top plate in the construction process of the immersed tube cast-in-place pile to wet the dustproof curtain, wherein dust generated in the casting process meets the wet dustproof curtain and is adsorbed;
7) pouring bonding concrete; pouring concrete from the feeding hole to bond the reinforcing steel bars at the bottom and the pile tip (1) together;
8) stretching the steel bars; after the bonding concrete (34) is solidified, placing a tensioning tool on the top of the immersed tube, inserting the embedding circular groove (29) into the immersed tube, fixing the tensioning tool on the top of the immersed tube, simultaneously enabling the longitudinal bar (27) on the top of the reinforcement cage to penetrate through the bar hole (28), then arranging a vertical jacking strut (31) on the side surface of the embedding circular groove (29), tensioning the longitudinal bar, and fixing the tensioned longitudinal bar by using an anchorage device (33);
9) pouring a light active material; the light active mixture after being mixed evenly is sent into the immersed tube from the feeding hole, and the immersed tube is vibrated continuously when being sent, so that the light active mixture is quickly and evenly poured into the geotextile bags.
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| CN201910174536.8A CN109930595B (en) | 2019-03-08 | 2019-03-08 | Vibration immersed tube light active material pile and construction method |
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| CN201910174536.8A CN109930595B (en) | 2019-03-08 | 2019-03-08 | Vibration immersed tube light active material pile and construction method |
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| CN113309082B (en) * | 2021-05-24 | 2022-06-14 | 广东南丰建设工程有限公司 | Dust-raising-prevention pile casing device for fender pile construction |
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| CN207073135U (en) * | 2017-07-14 | 2018-03-06 | 中铁二十四局集团有限公司 | A kind of instrument of fixed bag pile cloth bag |
| CN209989806U (en) * | 2019-03-08 | 2020-01-24 | 安徽省公路桥梁工程有限公司 | Light active material pile with vibrating immersed tube |
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- 2019-03-08 CN CN201910174536.8A patent/CN109930595B/en active Active
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| US3934422A (en) * | 1974-11-11 | 1976-01-27 | Fredrickson Larry E | Pile splicing apparatus and method |
| JPH03176509A (en) * | 1989-12-05 | 1991-07-31 | Fujita Corp | Load testing method of cast-in-place pile and device thereof |
| CN103711122A (en) * | 2013-12-09 | 2014-04-09 | 杭州江润科技有限公司 | Cloth bag squeezing concrete branch pile and construction method |
| CN207073135U (en) * | 2017-07-14 | 2018-03-06 | 中铁二十四局集团有限公司 | A kind of instrument of fixed bag pile cloth bag |
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