CN104018507A - Underwater cast-in-place concrete pile elevation control device and using method thereof - Google Patents
Underwater cast-in-place concrete pile elevation control device and using method thereof Download PDFInfo
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- CN104018507A CN104018507A CN201410290407.2A CN201410290407A CN104018507A CN 104018507 A CN104018507 A CN 104018507A CN 201410290407 A CN201410290407 A CN 201410290407A CN 104018507 A CN104018507 A CN 104018507A
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Abstract
The invention provides an underwater cast-in-place concrete pile elevation control device and a using method thereof. The control device comprises a material taking tube and a telescopic scale, and is characterized in that the telescopic scale is hollow and is fixedly arranged at the upper end of the material taking tube; the material taking tube is a cylinder of which the lower end is open, multiple mud holes of which the diameter is smaller than the particle size of underwater concrete and is larger than the particle size of mud are formed in the wall of the cylinder; only mud can penetrate through the mud holes, and concrete cannot penetrate through the mud holes; a lower end cover which is open towards the interior of the tube in an open manner is arranged at a lower opening of the material taking tube; a vibration block of which the specific gravity is higher than specific gravity of the mud and is lower than the specific gravity of concrete is suspended in the material taking tube. The device is simple in structure, convenient in operation, easy to detach and flexible in assembly and can be repeatedly utilized by different types of underwater cast-in-place concrete piles, and the pile block elevation and concrete super-fusion height of the underwater cast-in-place concrete pile can be effectively controlled. Moreover, the production cost of construction projects can be effectively reduced, and high economic benefits can be obtained.
Description
Technical field
The present invention relates to pile foundation construction field, specifically a kind of quick and precisely keyhole bored pile underwater concrete is built underwater concrete filling pile elevation control device and the using method thereof of height.
Background technology
Fast development along with building trade, the use of underwater concrete filling pile also increases gradually, such as some high-rise building bases, underground chamber, subterranean tunnel, bridge, harbour, harbour basis etc., particularly the basic engineering of the bridge of some soft clay area, harbour, harbour and highrise building, often adopts bored pile to carry out underwater concrete perfusion.
Exploitation due to the underground space; the design elevation on stake top is often below bottom surface; in filling concrete process because of the existence of slurry mixture; the true absolute altitude of concrete surface is difficult to correct positioning control; often according to constructor's construction experience and some interim simple instruments; as drag for son, lining rope etc. the height of concreting face is judged; existing metering system there will be some problems often; when particularly for some empty hole depths, large stake is poured into; because light instrument cannot be used, the problem of appearance is more more serious.
It is tremie method and pump pressure method that underwater concrete perfusion at present adopts more method, wherein tremie method is used the most extensive, the perfusion channel using the steel pipe being tightly connected (or the higher hard non-metallic pipe of intensity) as underwater concrete specifically, its bottom is embedded in the concrete-agitating thing pouring into the suitable degree of depth, under certain head pressure effect, form closely knit concrete pile body continuously.But according to pile foundation construction code requirement, along with concrete, constantly pour into, should measure in time the pipe laying depth of top of concrete height and conduit, promote and remove conduit in time, the degree of depth in conduit Transducers Embedded in Concrete is remained between 2m～6m.Owing to cannot truly determining concrete surface height, often there will be tube drawing too much to make at the bottom of conduit, higher than concrete surface height, to cause the generation of broken pile, or tube drawing is too short makes to build the problems such as difficulty.And in standard, also require concrete after being poured into design elevation should surpass filling 800mm, and owing to cannot accurately determining concrete surface height, often cause the super filling of concrete to be highly far longer than 800mm equally, cause a large amount of wastes.As pressed a stake footpath 800mm, the super 2.5m that fills with of average every pile, C30 concrete is pressed 275 yuan/m by every cube
3calculate waste amount of concrete V=3.14x 0.4x0.4x2.5=1.25m
3.From security standpoint, single-unit cuts pile length and is generally no more than 1.5 meters.As super, filling with 2.5 meters needs segmentation to cut stake, and every pile needs secondary to cut stake, and by everyone 150 yuan/day of the market prices of current labour cost, by cutting for each person every day two, the stake expense of cutting of every like this pile is: 1 * 150=150 unit; Waste concrete expense is: 1.25 * 275=343.75 unit; The total cost of an average pile waste is: 343.75+150=493.75 unit.If there is the object of construction production of 1000 piles, the supplementary payments expense of engineering cost: (343.75+150) * 1000=493750 unit, if stake footpath is larger, the extra charge of average every pile is higher.
Summary of the invention
The present invention is according to the deficiencies in the prior art, provide a kind of simple to operate, detection accuracy is high, and quick and precisely keyhole bored pile underwater concrete is built control device and the using method thereof of height.
Technical scheme provided by the invention: described a kind of underwater concrete filling pile elevation control device comprises feeding cylinder and shrinkage-rule bar, it is characterized in that: described shrinkage-rule bar is hollow form, at chi rod outer surface, be provided with scale layer, shrinkage-rule bar is fixedly installed on the upper end of feeding cylinder, operated by rotary motion is at its top, shrinkage-rule bar can be that more piece hollow chi bar is socketed to form, can its length of telescopic adjustment, its shape is similar to fishing rod, what described feeding cylinder was lower ending opening is cylindric, its barrel offers a plurality of diameters and is less than underwater concrete particle diameter, and be greater than the mud hole of mud particle diameter, mud hole can only pass mud, can not pass concrete, at the lower opening of feeding cylinder, be provided with to the bottom end cover of unidirectional unlatching in cylinder, in feeding cylinder, hang and be provided with proportion and be greater than mud balance, be less than the vibrating mass of concrete proportion, vibrating mass is fixed on the upper end cover inner side of feeding cylinder by lifting rope, described elevation control device also comprises controller, alarm and vibrating sensor, described vibrating sensor is arranged on the position of corresponding vibrating mass inside feeding cylinder upper end cover, described controller and alarm are all arranged on the upper end of shrinkage-rule bar, the signal output part of vibrating sensor is connected with the signal output part of controller, and the signal output part of controller is connected with the signal output part of alarm.
The further technical scheme of the present invention: described vibrating mass is cone, hangs the central position that is located at feeding cylinder, and its proportion is between 1.8～2.1; Vibrating mass is the cone of hollow, adds the material of different specific weight at hollow cone body, and the proportion of whole vibrating mass is regulated, and makes the proportion of vibrating mass between 1.8-2.1.
The present invention is technical scheme preferably: the bottom end cover of described feeding cylinder is to be formed by connecting by hinge member by two semicircle lids, described hinge member is comprised of a fixed axis and a plurality of hinge, its fixed axis is placed on the axis of feeding cylinder lower ending opening, two ends are separately fixed on the barrel of feeding cylinder, a plurality of hinges are arranged on fixed axis, and two semicircle lids are connected into a circular lid, the diameter of this circle lid equates with the internal diameter of feeding cylinder, at the lower ending opening edge of feeding cylinder, be provided with the one or more blocks that prevent that two semicircle lids from opening downwards.
The present invention is technical scheme preferably: the signal output part of described controller is connected with the control end of underwater concrete device for casting.
The present invention is technical scheme preferably: the height of described feeding cylinder is 10-20cm.
The present invention is technical scheme preferably: while a block being set at feeding cylinder lower port place, be annular block; Arranging when a plurality of, is block arc or square block.
The present invention is technical scheme preferably: the aperture in described mud hole is 3.5-4.5mm.
Another technical scheme provided by the invention: the using method of described a kind of underwater concrete filling pile elevation control device, is characterized in that concrete steps are as follows:
(1) prepare underwater concrete filling pile elevation control device, this device comprises that barrel offers feeding cylinder and the shrinkage-rule bar in a plurality of mud hole, the diameter in mud hole is greater than the mud hole that mud particle diameter is less than underwater concrete particle diameter, the aperture in mud hole is generally 3.5-4.5mm, at the lower opening of feeding cylinder, be provided with to the bottom end cover of unidirectional unlatching in cylinder, in feeding cylinder, hang and be provided with the vibrating mass that proportion is 1.8-2.1, inside feeding cylinder upper end cover, the position of corresponding vibrating mass arranges a vibrating sensor, and at shrinkage-rule masthead end, be provided with the control box of built-in controller and alarm, controller is connected by wire with vibrating sensor,
(2) cleaning underwater concrete fill orifice, and assemble underwater concrete device for casting, determine the absolute altitude of underwater concrete filling pile, calculate the distance in aperture, the dried up lower filling concrete hole of design elevation;
(3) regulate the length of shrinkage-rule bar, make the distance 500-800mm in the middle aperture, the dried up lower filling concrete hole of design elevation of calculating of Length Ratio step (2) of shrinkage-rule bar, and ready underwater concrete filling pile elevation control device is vertically placed in underwater concrete fill orifice, make feeding cylinder just be placed in the position of the above 500-800mm of design elevation, and the top of elevation control device is fixed on to ground;
(4) start pouring underwater concrete, concrete in filling process in underwater concrete fill orifice and mud can upwards constantly be risen by bottom, filling concrete hole from conduit, when concrete surface arrives feeding bottom of the barrel, the impact force that concrete and mud rise is backed down the bottom end cover of feeding cylinder bottom in cylinder, and enter in feeding cylinder, overflow in the mud hole of the mud entering from feeding cylinder barrel, concrete continues to enter, when touching vibrating mass, because the proportion of vibrating mass is less than concrete proportion, just can float on liquid concrete, along with concrete liquid level rises together, and touch vibrating sensor, vibrating mass can vibrate in concrete liquid level, vibrating sensor receives vibration signal, just by wire transmission to controller, by control, control alarm equipment alarm again, now just can judge that concrete surface has reached design elevation, just temporarily stop concrete perfusion,
(5) after stopping filling concrete, in hole, take out underwater concrete filling pile elevation control device, check the concrete in feeding cylinder, if also there is concrete in feeding cylinder, just the stake top mark that can dual definite concrete surface have reached designing requirement is high, finally completes filling concrete task.
Elevation control device of the present invention is comprised of length-adjustable rule and feeding cylinder, and on the barrel of feeding cylinder, offer the hole that a plurality of apertures are less than concrete particle diameter, at the top of feeding cylinder, hang and establish one and can be greater than mud, be less than concrete object by proportion, because heavy object can sink in the little liquid object of proportion, the object that proportion is little can be floating in heavy liquid object.And mud and concrete are all liquid in filling process, according to detection, obtain, proportion 1.15 left and right of general mud, and concrete proportion is 2.4 left and right, according to above principle, the proportion that the quality that we just can be added on the material in vibrating mass by change is controlled whole cone is between 1.8～2.1 it, thereby vibrating mass is sunk in mud, floating on concrete surface.The mud entering in feeding cylinder can flow out by mud hole, avoids mud to vibrate sensor, and sensor is caused to unnecessary interference effect, is convenient to feeding bucket feeding.When concrete enters feeding cylinder, hang the vibrating mass of establishing and just can float over concrete surface because proportion is less than concrete, and along with concrete surface rises, at feeding cylinder top cover inwall, be provided with sensor, the vibrating mass rising just can feeler, because concrete surface produces impact force and vibration in uphill process, just can drive vibrating mass vibration, when sensor sensing to vibration vibrating mass time, just signal can be passed to controller, by controller, control alarm equipment alarm, after warning, just temporarily stop concrete perfusion, take out this device, and check in feeding bucket, whether there is concrete, determine that concrete arrives absolute altitude really, just can finish the perfusion of this concrete pile.
The present invention is simple in structure, easy to operate, dismounting easily, assembling flexibly, for dissimilar underwater cast-in-place pile, can reuse, can effectively control the super height of filling with of the high and concrete of stake top mark of underwater cast-in-place pile, in control procedure, can not receive the interference of mud, can judge accurately the height of concrete surface, effectively reduce building project cost of production, can obtain good economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of feeding cylinder of the present invention;
Fig. 3, Fig. 4 are the schematic bottom view of feeding cylinder in the present invention;
Fig. 5 is the structural representation of control box of the present invention;
Fig. 6 is use view of the present invention.
In figure: 1-feeding cylinder, 2-shrinkage-rule bar, 3-mud hole, 4-bottom end cover, 4-1-semicircle lid, 4-2-hinge member, 4-3-block, 5-vibrating mass, 6-lifting rope, 7-controller, 8-alarm, 9-vibrating sensor, 10-control box, 11-battery case, 12-switch, 13-sensor wiring hole, 14-wire, 15-underwater concrete fill orifice, 16-concrete perfusion conduit, 17-code requirement underwater concrete filling pile perfusion absolute altitude
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.As shown in Figure 1, described a kind of underwater concrete filling pile elevation control device comprises feeding cylinder 1 and shrinkage-rule bar 2, it is characterized in that: described shrinkage-rule bar 2 can adopt the structure of existing telescopic sleeving rod, by more piece hollow form chi bar, be socketed to form, and can pass through its length of telescopic adjustment, every joint cover chi stretch out or shrink after all can fix (fixed form that its fixed form can directly adopt existing telescopic sleeving rod), guarantee can arbitrarily not change its length after regulating length, the structure of shrinkage-rule bar 2 can adopt the structure of similar fishing rod; External surface at every joint cover chi is equipped with scale layer, and the scale value of more piece cover chi is continuous, just forms a complete shrinkage-rule after stretching out, and shrinkage-rule bar 2 is fixedly installed on the top of feeding cylinder 1.Can determine according to the absolute altitude of underwater concrete filling pile the height on cast-in-place concrete pile end face and ground in use, then shrinkage-rule bar 2 is adjusted to (the length here is specifically determined according to the height of feeding cylinder to the length of the long 500-800mm of ground level than stake top absolute altitude, guarantee the position of concrete pile absolute altitude meaning 800mm left and right under water, feeding position, the height that can control accurately underwater concrete stake reaches design specifications, because place, stake top has the sediment of laitance and mud after pile, in order to ensure last stake top mark high concrete, be intact, in all pile foundation constructions, on design drawing and construction contract, all can require the concrete absolute altitude of in-site pouring will exceed design elevation 500-800mm), this device is placed in underwater concrete fill orifice, and be fixed (such as clamping its end by a geometrical clamp by some modes, after dying, geometrical clamp is fixed on the ground, or by other existing mode by its stable ground that is fixed on, guarantee that feeding cylinder is placed in the position of the absolute altitude top 500-800mm of underwater concrete filling pile, when cast-in-place concrete pile is filled into over absolute altitude 500-800mm under water, can feeding report to the police, absolute altitude to underwater concrete filling pile is controlled.
As shown in Figure 2, described feeding cylinder 1 is cylindric for upper end sealing, lower ending opening, and its diameter is 10-20cm, be highly 30cm, this is highly mainly that because the diameter of concrete perfusion conduit is 30cm left and right, conduit two back gauge pile lining spacing are 25cm for the stake design of stake diameter 800mm.The stake of other types can carry out concrete setting according to stake diameter, highly too little and is too highly unfavorable for feeding and affects working sensor.On the barrel of feeding cylinder 1, offer a plurality of diameters and be less than underwater concrete particle diameter, be greater than the mud hole 3 of mud particle diameter, the aperture in mud hole 3 is 3-5-4.5mm, in Concrete Grouting Pale, the material footpath of concrete gravel is in 5-31.5mm continuous grading, and in mud, the particle diameter of sand is generally below 2mm.The aperture in mud hole 3 is arranged between sand and concrete gravel, can only pass mud, can not pass through concrete, after mud enters feeding cylinder 1, just can discharge by mud hole 3, just the mud in concrete can be separated, avoid the absolute altitude of mud influence concrete surface to control.In feeding cylinder 1, hang and be provided with proportion and be greater than mud balance, be less than the vibrating mass 5 of concrete proportion, described vibrating mass 5 is hollow cone, material is that glass fiber reinforced plastic (FRP) is fiber-reinforced plastic, light weight and hard, non-conductive, mechanical strength is high, corrosion-resistant, smooth surface.The material that may be corrosive in earth during Underwater pile construction, the various additives in concrete have certain corrosivity, and vibrating mass can not be corroded.Described vibrating mass is fixed on the upper end cover inner side of feeding cylinder 1 by lifting rope 6, it just hangs the central position that is located at feeding cylinder 1 after fixing, change the proportion of whole vibrating mass by adding the material of different proportion, makes its proportion between 1.8-2.1.The solid that vibrating mass 5 also can directly adopt the material of proportion between 1.8～2.1 to make, is provided with to the bottom end cover 4 of unidirectional unlatching in cylinder at the lower opening of feeding cylinder 1.
As shown in Figure 3, the bottom end cover 4 of described feeding cylinder 1 is to be formed by connecting by hinge member 4-2 by two semicircle lid 4-1, described hinge member is comprised of a fixed axis and a plurality of hinge (two hinges of ordinary circumstance), its fixed axis is placed on the axis of feeding cylinder 1 lower ending opening, two ends are separately fixed on the barrel of feeding cylinder 1, a plurality of hinges are arranged on fixed axis, and two semicircle lid 4-1 are connected into a circular lid, the diameter of this circle lid equates with the internal diameter of feeding cylinder 1, at the lower ending opening edge of feeding cylinder 1, be provided with the one or more block 4-3 that prevent that two semicircle lids from opening downwards, guarantee that two semicircle lids can not open downwards, only unidirectional unlatching inside meeting feeding cylinder.Feeding cylinder 1 lower port in enforcement illustration in Fig. 3 is provided with a collar stop, and feeding cylinder 1 lower port in the enforcement illustration in Fig. 4 arranges a plurality of square blocks.
As shown in Figure 1, described elevation control device also comprises controller 7, alarm 8 and vibrating sensor 9, described vibrating sensor is arranged on the position of corresponding vibrating mass 5 inside feeding cylinder 1 upper end cover, described controller 7 and alarm 8 are all arranged in a control box, and be placed in the top of shrinkage-rule bar 2, in order to facilitate installation not fix with shrinkage-rule bar 2, when mounted, it directly can be fixed on bottom surface.As shown in Figure 5, in this control box, be also provided with battery case 11, on control box, be provided with sensor wiring hole 13, the signal output part of vibrating sensor 9 is connected with the signal output part of controller 7 in being arranged on control box by wire 14, wire 14 passes in the hollow cavity of shrinkage-rule bar 2, and the signal output part of controller 7 is connected with the signal output part of alarm 8; Its controller can also be connected with the control end of underwater concrete device for casting, when touching alarm signal, automatically control underwater concrete device for casting stop perfusion.
First, by average maximum specific weight and the concrete average minimum proportion of the prepared mud of Instrument measuring, then according to two numerical value, 4 proportion is regulated and makes its proportion between mud and concrete proportion, according to empty hole depth in hole and the super length of highly first adjusting 2 of filling with of permission, then tremie concrete pile head elevation control device is vertically put into hole, 1 is positioned over ground, and 2 top horizontal ground or above ground level, is then fixed.In concrete casting process, the scale in the warning by 1 and 2 and 3 feeding are carried out the height of two-way control concreting face, thereby better control concrete pouring quality.
Embodiment: certain Tall Building Foundation adopts castinplace pile, the long 60 meters of left and right of stake, but its empty hole depth reaches 17 meters, and large for the control difficulty of concreting height, according to above situation, select to adopt the present invention to control concrete building highly.First, according to actual measurement, the average maximum specific weight of obtaining mud is 1.26, it is 2.42 that the concrete of employing C45 is surveyed its proportion, according to above two values, the cone of rotation hollow within it portion is filled fine sand to obtain proportion is 2 vibrating mass, and be fixed in feeding cylinder 1, after measurement mechanism is ready to, the length adjustment of shrinkage-rule bar 2 is arrived than the long 500-800mm of empty hole depth, be the length of 17.7-17.8 rice, it is vertically placed in underwater concrete fill orifice 15, as shown in Figure 6, and fix, after fixing, feeding cylinder 1 is placed in the position of code requirement underwater concrete filling pile perfusion absolute altitude 17 (being the position of underwater concrete filling pile absolute altitude 800mm), then start normally to carry out the perfusion of underwater concrete stake, concrete perfusion is put into hopper and is flowed via a conduit bottom, hole, concrete is constantly put into hopper, concrete in hole and mud can upwards constantly be risen by bottom, hole from conduit, when concrete surface arrives feeding cylinder 1 bottom, the impact force that concrete and mud rise is opened the bottom end cover 4 of feeding cylinder 1 bottom in feeding cylinder, concrete and mud enter in feeding cylinder, now mud can overflow in the mud hole 3 from the barrel of feeding cylinder.Concrete and pyramid type vibrating mass rise gradually, just can touch vibrating sensor 9, add concrete and in filling process, there will be vibration, just can make vibrating mass 5 vibrations, vibrating sensor 9 receives the vibration signal of vibrating mass 5, by wire transmission, to controller 7, then by controller 7, is controlled alarm 8 and sends chimes of doom, now, by manually or automatically controlling concrete casting device, temporarily stop concrete perfusion.From the interior taking-up fluid concrete of underwater concrete fill orifice 15 pile head elevation control device, check the concrete in feeding cylinder, object is to carry out two-way control, alarm 8 has given the alarm, in feeding cylinder 1, also there is concrete, illustrate concrete surface reached designing requirement stake top mark high, finally complete filling concrete task.
Fluid concrete pile head elevation control device is vertically put into hole internal procedure along hole wall and is avoided colliding conduit and hole wall, in order to avoid controller is caused to unnecessary damage, according to the size of the aperture of stake and tremie, can produce processing fluid concrete pile head elevation control device in batches.It is high advanced reliable that this controller is controlled concrete pile top mark, has the function and efficacy of two-way control, simple to operate understandable.Can be cost-saving to the investor of building project and construction enterprises.
Claims (8)
1. a underwater concrete filling pile elevation control device, comprises feeding cylinder (1) and shrinkage-rule bar (2), it is characterized in that: described shrinkage-rule bar (2) is hollow form, is fixedly installed on the top of feeding cylinder (1); What described feeding cylinder (1) was lower ending opening is cylindric, its barrel offers a plurality of diameters and is less than underwater concrete particle diameter, and be greater than the mud hole (3) of mud particle diameter, at the lower opening of feeding cylinder (1), be provided with to the bottom end cover (4) of unidirectional unlatching in cylinder, in feeding cylinder (1), hang and be provided with proportion and be greater than mud balance, be less than the vibrating mass (5) of concrete proportion, vibrating mass (5) is fixed on the upper end cover inner side of feeding cylinder (1) by lifting rope (6); Described elevation control device also comprises controller (7), alarm (8) and vibrating sensor (9), described vibrating sensor is arranged on the position of corresponding vibrating mass (5) inside feeding cylinder (1) upper end cover, described controller (7) and alarm (8) are all arranged on the upper end of shrinkage-rule bar (2), the signal output part of vibrating sensor (9) is connected with the signal output part of controller (7), and the signal output part of controller (7) is connected with the signal output part of alarm (8).
2. a kind of underwater concrete filling pile elevation control device according to claim 1, is characterized in that: described vibrating mass (5) is cone, hangs the central position that is located at feeding cylinder (1), and its proportion is between 1.8～2.1.
3. a kind of underwater concrete filling pile elevation control device according to claim 1, it is characterized in that: the bottom end cover (4) of described feeding cylinder (1) is to be formed by connecting by hinge member (4-2) by two semicircle lids (4-1), described hinge member is comprised of a fixed axis and a plurality of hinge, its fixed axis is placed on the axis of feeding cylinder (1) lower ending opening, two ends are separately fixed on the barrel of feeding cylinder (1), a plurality of hinges are arranged on fixed axis, and two semicircle lids (4-1) are connected into a circular lid, the diameter of this circle lid equates with the internal diameter of feeding cylinder (1), at the lower ending opening edge of feeding cylinder (1), be provided with the one or more blocks (4-3) that prevent that two semicircle lids from opening downwards.
4. a kind of underwater concrete filling pile elevation control device according to claim 1, is characterized in that: the signal output part of described controller (7) is connected with the control end of underwater concrete device for casting.
5. a kind of underwater concrete filling pile elevation control device according to claim 1, is characterized in that: the diameter of described feeding cylinder (1) is 10-20cm, is highly 30cm-50cm.
6. a kind of underwater concrete filling pile elevation control device according to claim 1, is characterized in that: the aperture in described mud hole (3) is 3.5-4.5mm.
7. a kind of underwater concrete filling pile elevation control device according to claim 3, is characterized in that: while a block being set at feeding cylinder (1) lower port place, be annular block; Arranging when a plurality of, is block arc or square block.
8. a using method for underwater concrete filling pile elevation control device, is characterized in that concrete steps are as follows:
(1) prepare underwater concrete filling pile elevation control device, this device comprises that barrel offers feeding cylinder and the shrinkage-rule bar in a plurality of mud hole, the diameter in mud hole is greater than the mud hole that mud particle diameter is less than underwater concrete particle diameter, at the lower opening of feeding cylinder, be provided with to the bottom end cover of unidirectional unlatching in cylinder, in feeding cylinder, hang and be provided with the vibrating mass that proportion is 1.8-2.1, inside feeding cylinder upper end cover, the position of corresponding vibrating mass arranges a vibrating sensor, and at shrinkage-rule masthead end, be provided with the control box of built-in controller and alarm, controller is connected by wire with vibrating sensor,
(2) cleaning underwater concrete fill orifice, and assemble underwater concrete device for casting, determine the absolute altitude of underwater concrete filling pile, calculate the distance in aperture, the dried up lower filling concrete hole of design elevation;
(3) regulate the length of shrinkage-rule bar, make the distance 500-800mm in the middle aperture, the dried up lower filling concrete hole of design elevation of calculating of Length Ratio step (2) of shrinkage-rule bar, and ready underwater concrete filling pile elevation control device is vertically placed in underwater concrete fill orifice, make feeding cylinder just be placed in the position of the above 500-800mm of design elevation, and the top of elevation control device is fixed on to ground;
(4) start pouring underwater concrete, concrete in filling process in underwater concrete fill orifice and mud can upwards constantly be risen by bottom, filling concrete hole from conduit, when concrete surface arrives feeding bottom of the barrel, the impact force that concrete and mud rise is backed down the bottom end cover of feeding cylinder bottom in cylinder, and enter in feeding cylinder, overflow in the mud hole of the mud entering from feeding cylinder barrel, concrete continues to enter, when touching vibrating mass, because the proportion of vibrating mass is less than concrete proportion, just can float on liquid concrete, along with concrete liquid level rises together, and touch vibrating sensor, vibrating mass can vibrate in concrete liquid level, vibrating sensor receives vibration signal, just by wire transmission to controller, by control, control alarm equipment alarm again, now just can judge that concrete surface has reached design elevation, just temporarily stop concrete perfusion,
(5) after stopping filling concrete, in hole, take out underwater concrete filling pile elevation control device, check the concrete in feeding cylinder, if also there is concrete in feeding cylinder, just the stake top mark that can dual definite concrete surface have reached designing requirement is high, finally completes filling concrete task.
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| CN112144586A (en) * | 2020-09-22 | 2020-12-29 | 中国地质大学（武汉） | Elevation detection device and cast-in-place pile concrete elevation detection equipment |
| CN113186929A (en) * | 2021-04-15 | 2021-07-30 | 山东大学 | Cast-in-place pile concrete top surface elevation control device and method |
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| CN107419758A (en) * | 2017-06-30 | 2017-12-01 | 中北大学 | It is a kind of to detect the superfilled method of concrete |
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| CN108532653A (en) * | 2018-04-25 | 2018-09-14 | 中国建筑第五工程局有限公司 | A kind of portable cast-in-situ bored pile hole depth and mud balance method |
| CN108532653B (en) * | 2018-04-25 | 2023-10-13 | 中国建筑第五工程局有限公司 | Portable bored pile hole depth and mud specific gravity method |
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| CN108678037B (en) * | 2018-06-15 | 2024-03-22 | 中建八局第二建设有限公司 | Underwater concrete pouring elevation measurement equipment and method |
| CN109629572A (en) * | 2019-01-09 | 2019-04-16 | 中国建筑第四工程局有限公司 | One kind is for reducing the superfilled concrete strength device of pile crown |
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| CN110409451A (en) * | 2019-07-16 | 2019-11-05 | 中国建筑第八工程局有限公司 | Ground-connecting-wall concrete prevents superfilled device and its application method |
| CN110409451B (en) * | 2019-07-16 | 2021-07-09 | 中国建筑第八工程局有限公司 | Ground-connected wall concrete super-irrigation prevention device and using method thereof |
| CN112144586A (en) * | 2020-09-22 | 2020-12-29 | 中国地质大学（武汉） | Elevation detection device and cast-in-place pile concrete elevation detection equipment |
| CN113186929A (en) * | 2021-04-15 | 2021-07-30 | 山东大学 | Cast-in-place pile concrete top surface elevation control device and method |
| CN113882383A (en) * | 2021-08-17 | 2022-01-04 | 山东大学 | Device and method for controlling concrete pouring height of filtering and vibrating type bored pile |
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