CN104314110B - The low-strain foundation pile of low-resistance under water of adjustable fixer length is dynamic surveys device - Google Patents
The low-strain foundation pile of low-resistance under water of adjustable fixer length is dynamic surveys device Download PDFInfo
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- CN104314110B CN104314110B CN201410647097.5A CN201410647097A CN104314110B CN 104314110 B CN104314110 B CN 104314110B CN 201410647097 A CN201410647097 A CN 201410647097A CN 104314110 B CN104314110 B CN 104314110B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000010410 layer Substances 0.000 claims abstract description 31
- 238000010030 laminating Methods 0.000 claims abstract description 16
- 239000011229 interlayer Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 31
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 5
- 238000007667 floating Methods 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 6
- 239000000523 sample Substances 0.000 abstract description 5
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- 238000012856 packing Methods 0.000 abstract description 2
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- 238000012360 testing method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011016 integrity testing Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses the low-strain foundation pile of the low-resistance under water dynamic survey device of adjustable fixer length, hammer and stress wave receiving transducer are integrated in a stress wave generation receiving trap, achieve hammer to fall and the robotization of packing up simultaneously, by balancing weight and fixing device combination, stress wave generation receiving trap is fixed on pile foundation top, there is the laminating gelatinous layer of colloidality stress wave receiving transducer lower end, water channel is formed between the pushing outer wall of room and the inwall of housing and waterproof interlayer inwall, for reducing water resistance, the present invention devises the extension elongation of length adjuster to stationary installation and regulates, the underwater pile in piles with different footpath can be adapted to.The present invention have can use in deepwater high-pressure, hammer and detection probe carry out merging and save that water resistance when artificial, hammer knocks is less, the advantage of good fixing effect.
Description
Technical field
The present invention relates to the technical field of pile measurement, particularly relate to the pile measurement device of high hydraulic pressure environment, specifically, is the low-strain foundation pile of the low-resistance under water dynamic survey device of adjustable fixer length.
Background technology
Large-section in-situ concrete pile is widely adopted because of advantages such as bearing capacity are high, construction noise is little, it normally by after hand excavation or rig pore-forming at underground or underwater grouting pile, its quality is difficult to by the impact of the many factors such as construction technology, especially concrete pouring operation control, therefore the quality problems ubiquity of pile foundation, as blocked up in sediment, pile body is uneven (local press from both sides mud, segregation, honeycomb etc.).So, before carrying out next process, detecting and assessing must be carried out to concrete piles weight and integrality, especially such as the underwater pile platform of offshore pile foundation platform.Offshore pile foundation platform is by Texas deck, lower guide pipe support and pass jacket leg and the pile foundation squeezing into seabed forms.Owing to being in severe marine environment for a long time, these piling strtuctures are constantly corroded and are destroyed, the long term of wind, wave, stream and ice load, the pile foundation motion that wave causes, the corrosion of rod member, the naughty erosion of sea bed, and the reason such as the apposition growth of marine growth all can affect the load-bearing capacity of stake; And all load that offshore pile foundation platform is subject to all are born by pile foundation, so the quality of piling directly can affect the safety of jacket platform, once have an accident, serious casualties and platform globality will be caused to damage, so seem particularly important to the detection of this type of underwater pile.
In general house pile measurement, the general mode of sampling observation that adopts is spot-check pile defect, then adopts every mode that must examine to detect in ocean or fluviatic pile foundation.To the detection mode usually adopting test for static load to combine with low-strain measurement during general house detection of pier foundation bearing capacity.Low-strain measurement carries out stress wave detection by low-strain dynamic measure instrument to pile body, analyzes thus carry out the one test of the work such as the determination of pile defect type and position, the long check and correction of construction stake and the qualitative estimation of strength grade of concrete to the stress wave returned.But, existing low-strain dynamic measure instrument is not adapted at using in deep water, due to when using dynamic tester to detect on the one hand, general needs two people coordinate, one people is by probe by being pressed on pile crown, and another hand hand hammer or power hammer knock stake top and produce stress wave, and whether an other people is by qualified with the preliminary judgment curves of display of the pile integrity tester be connected of popping one's head in, and record corresponding pile No., recycle special software and data are further analyzed; On the other hand, in deepwater high-pressure environment, not only cost of labor is high, complicated operation difficulty large to use artificial diving to carry out low strain dynamic operation, and dynamic tester probe can cause sensor sensitivity to decline by water leaking-in under deepwater high-pressure, the low strain dynamic curve distortion of pounding out is mixed and disorderly, poor effect.Expensive cost of labor, the highly difficult and poor Detection results of detection seriously limit the application of low-strain dynamic measure instrument in ocean and sea, river pile measurement.
Summary of the invention
Technical matters to be solved by this invention is for the above-mentioned state of the art, and provide a kind of and can use in deepwater high-pressure, hammer and detection probe carry out merging and save that water resistance when artificial, hammer knocks is less, the low-strain foundation pile of low-resistance under water of the adjustable fixer length of good fixing effect is dynamic surveys device.
The present invention solves the problems of the technologies described above adopted technical scheme:
The low-strain foundation pile of low-resistance under water of adjustable fixer length is dynamic surveys device, comprise data processor, data processor is connected with stress wave generation receiving trap by watertight line, stress wave generation receiving trap includes hammer and stress wave receiving transducer, it is characterized in that: stress wave generation receiving trap is provided with an inner chamber body, this inner chamber body is divided into left cavity and right cavity by waterproof interlayer, left cavity lower openings, hammer is placed in left cavity, stress wave receiving transducer is placed in right cavity, the bottom laminating of stress wave receiving transducer is equipped every briquetting, the housing of stress wave generation receiving trap is extend out to outer and coordinate with housing seal every briquetting, balancing weight and the damping layer of vibration isolation for stress wave receiving transducer and left cavity being transmitted is provided with in right cavity, left cavity is built-in with pushing room, pushing top, room is fixed on stress wave generation receiving trap top, bottom extends in the middle part of left cavity, pushing room includes pushing chamber, pushing chamber is connected with takes out gas injection device, take out gas injection device and comprise high pressure gas injection machine and air pump, high pressure gas injection machine and air pump are all communicated with pushing top of chamber by conduit, the hammer handle top of hammer is stretched in pushing chamber, hammer handle top arranges rubber bodies, rubber bodies is sealed and matched with pushing chamber interior walls, the tup of hammer be connected with hammer handle and tup in hammer handle bottom, tup is positioned at pushing outdoor and can stretches out housing under the promotion of hammer handle, left water channel is formed between the left side outer wall of pushing room and the inner left wall of housing, right water channel is formed between the outer right wall of pushing room and waterproof interlayer, left cavity is all run through on left water channel and right water channel top, pushing bottom, room is provided with seal flange, seal flange and hammer handle cooperation place are provided with sealing floating ring, stress wave generation receiving trap is provided with at least one locating device, pile foundation is preset with the chucking lug corresponding with locating device, locating device includes the positioning motor that is placed in stress wave generation receiving trap, be fixedly connected with one end of the first length adjuster after the transmission shaft of positioning motor stretches out housing sidewall, housing sidewall is provided with the second length adjuster, one end and the housing of the second length adjuster are fixed, the other end and locating piece are fixed, locating piece is provided with contrate gear, contrate gear is rotatably mounted on locating piece, the other end of the first length adjuster is connected with perpendicular gear, contrate gear and perpendicular gear are engaged mutually, first length adjuster and the second length adjuster can synchronously shorten or extend, first length adjuster and the second length adjuster have included the first adjustable pipe and the second adjustable pipe, the internal diameter of the first adjustable pipe is greater than the external diameter of the second adjustable pipe, second adjustable pipe is inserted in the first adjustable pipe, first adjustable pipe is provided with row's length-adjustment holes, second adjustable pipe is fixed with the card convex that can snap in length-adjustment holes, a reference column being provided with threaded body vertically runs through contrate gear and locating piece, the screw thread coordinated with the threaded body of reference column is all set in the through hole of contrate gear and locating piece, chucking lug top is provided with the smooth the rim of a bowl facilitating reference column to slip into, smooth the rim of a bowl central authorities are for most recess and this place is formed with threaded hole, reference column can screw in threaded hole under the drive of positioning motor and screw thread is fixed with it, data processor includes controller, controller controls high pressure gas injection machine, the running of air pump and positioning motor.
For optimizing technique scheme, the concrete measure taked also comprises:
First adjustable pipe of the first above-mentioned length adjuster is fixedly connected with the transmission shaft of positioning motor, and the second adjustable pipe of the first length adjuster is fixedly connected with perpendicular gear; First adjustable pipe of the second length adjuster and housing are fixed, and the second adjustable pipe of the second length adjuster and locating piece are fixed.
The transmission shaft of above-mentioned positioning motor stretches out housing place and is provided with water-proof block.
Above-mentioned reference column top is provided with column cap body, and time bottom reference column moves to, column cap body gear prevents reference column from continuing to move down on locating piece top.
Above-mentioned includes every pressure hard layer and laminating gelatinous layer every briquetting, fit every pressure hard layer and stress wave receiving transducer fixing, laminating gelatinous layer side with every press hard layer to bond, opposite side extends to outside the housing of stress wave generation receiving trap, coordinates every pressing hard layer to conflict with housing seal.
Above-mentioned inner chamber body top is filled with glue-line, and glue-line wraps up the watertight line the junction of seal casinghousing and watertight line that stretch in housing.
Above-mentioned inscribe in the middle part of briquetting is formed with sealing dogging shoulder, and sealing dogging shoulder top is pressed on lower housing portion.
The junction of above-mentioned housing, sealing dogging shoulder and stress wave receiving transducer is provided with sealing ring.
The lower end, left side of above-mentioned housing is provided with balancing leg, and the length that balancing leg stretches out housing is equal with the length that laminating gelatinous layer stretches out housing.
Spring is placed with in above-mentioned pushing chamber, pushing bottom, chamber is fixed with rubber sealing block, lower spring end is fixed on rubber sealing block, when the hammer handle of hammer is positioned at the eminence in pushing chamber, spring upper end and rubber bodies clearance fit, when the hammer handle of hammer is positioned at the lower in pushing chamber, spring upper end and rubber bodies apical grafting and spring are compressed.
Compared with prior art, hammer and stress wave receiving transducer are integrated in a stress wave generation receiving trap by the present invention, achieve hammer to fall and the robotization of packing up simultaneously, made the axis of the center of gravity of stress wave generation receiving trap on stress wave receiving transducer by balancing weight, and there is the laminating gelatinous layer of colloidality stress wave receiving transducer lower end, be connected with regard to allowing stress wave receiving transducer and the stake of bottom realize good medium like this, need not by manually pushing down stress wave receiving transducer.But only push down stress wave receiving transducer by balancing weight sometimes not firm, stress wave receiving transducer can shake by the vibrations of hammering a little, affects the accuracy that stress wave gathers.In order to address this problem, the present invention devises stationary installation further, for stress wave generation receiving trap is thoroughly fixed on pile foundation, has stopped stress wave receiving transducer because of a variety of causes and has left pile foundation face.The present invention is stationary positioned ear in pile foundation, have smooth the rim of a bowl in chucking lug, this smooth the rim of a bowl is used for facilitating reference column to find threaded hole, as long as reference column enters smooth the rim of a bowl, at the Gravitational sliding of device itself to threaded hole place, can effectively reduce the positioning difficulty of this device.When reference column screws in threaded hole completely, column cap body is pressed on locating piece, and locating piece and housing are fixed, and is delivered to by the pressure of column cap body on stress wave generation receiving trap, thus stress wave generation receiving trap is securely pressed in pile foundation surface.In Specific construction, different stakes has different stake footpath, when needing bearing capacity larger, can adopt the stake that a footpath is larger.The underwater pile in piles with different footpath can be adapted to make underwater pile low-strain dynamic measure device of the present invention, the present invention devises length adjuster on the securing means, for regulating the transmission shaft extension elongation of locating piece and positioning motor, first length adjuster and the second length adjuster can synchronously shorten or extend, the internal diameter of the first adjustable pipe is greater than the external diameter of the second adjustable pipe, second adjustable pipe is inserted in the first adjustable pipe, first adjustable pipe is provided with row's length-adjustment holes, the second adjustable pipe is fixed with the card convex that can snap in length-adjustment holes.When needing to extend stationary installation, card convex is stuck in comparatively outer length-adjustment holes, when needing to shorten stationary installation, card convex is stuck in comparatively by inner length-adjustment holes.Realize elongation and the shortening of stationary installation thus, make stationary installation can adapt to the underwater pile in piles with different footpath, keep stress wave generation receiving trap on the underwater pile in piles with different footpath, all can be in centre position.The present invention to bleed running by the gas injection that controller controls high pressure gas injection machine and air pump, realizes the Bit andits control of counter-blow hammer, makes hammer can knock stake top, realize stress wave signal collection.The gatherer process of stress wave signal does not need manually directly to carry out, and only just can be completed the low-strain measurement of stake thus by a people, and this manually can carry out tune-up data processor by platform on the water, has greatly saved testing cost.In order to reduce the resistance of hammering, stress wave generation receiving trap is formed with left water channel between the left side outer wall and the inner left wall of housing of pushing room, right water channel is formed between the outer right wall of pushing room and waterproof interlayer, left cavity is all run through on left water channel and right water channel top, when hammer moves, water in left cavity can not overstock near hammer, but flowed by left water channel and right water channel, effectively avoid forming high water resistance near hammer, reduce the obstruction of water resistance counter-blow hammer normal displacement and the reacting force of hammer corresponding Reeb generation receiving trap.Stress wave generation receiving trap of the present invention have employed many places sealing arrange, ensure its under water hyperbaric environment can normally work.At left cavity place, adopt sealing floating ring and rubber sealing block double seal pushing room, the setting of sealing dogging shoulder is adopted at right cavity place, by water cycle factors on housing, ensure that stress wave receiving transducer is not subject to too large pressure, arranged by sealing ring, can enter right cavity by anti-sealing, preventing stress wave receiving transducer from intaking affects work.Due to hammer and the set of stress wave receiving transducer in one apparatus, the stress wave that the vibrations of knocking timer generation can make stress wave receiving transducer receive and transmit from left cavity shakes, the accuracy of impact monitoring, therefore, the stress wave vibrations that the present invention adopts damping layer the form that stress wave receiving transducer wraps up to be isolated or reduces to transmit from left cavity, to increase the accuracy of monitoring.
The present invention have can use in deepwater high-pressure, hammer and detection probe carry out merging save that water resistance when artificial, hammer knocks is less, good fixing effect advantage.
Accompanying drawing explanation
Fig. 1 is schematic diagram when hammer of the present invention lifts, fixed leg not yet screws in chucking lug;
Fig. 2 is the stress wave generation receiving trap structural representation in Fig. 1;
Fig. 3 is A portion schematic enlarged-scale view in Fig. 1;
Fig. 4 is the vertical view of pile foundation;
Fig. 5 is schematic diagram when hammer of the present invention lifts, fixed leg screws in chucking lug;
Fig. 6 is the structural representation of hammer of the present invention when falling;
Fig. 7 is that hammer of the present invention is from falling the structural representation changed to when again lifting;
Fig. 8 is the structure diagram of low-strain dynamic measure instrument of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Fig. 1 is to Figure 8 shows that structural representation of the present invention.
Reference numeral is wherein: data processor 1, controller 11, stress wave generation receiving trap 2, left cavity 2a, right cavity 2b, housing 2c, waterproof interlayer 21, balancing leg 22, glue-line 23, hammer 3, hammer handle 31, rubber bodies 31a, tup 32, stress wave receiving transducer 4, every briquetting 41, every pressure hard layer 41a, laminating gelatinous layer 41b, sealing dogging shoulder 41c, sealing ring 41d, balancing weight 5, damping layer 6, pushing room 7, pushing chamber 7a, left water channel 71, right water channel 72, spring 73, rubber sealing block 74, take out gas injection device 8, high pressure gas injection machine 81, air pump 82, seal flange 9, sealing floating ring 91, locating device 100, positioning motor 101, first length adjuster 101a, locating piece 102, second length adjuster 102a, reference column 103, column cap body 103a, water-proof block 104, length-adjustment holes 105, chucking lug 110, smooth the rim of a bowl 110a, threaded hole 110b.
As shown in Figures 1 to 8, the low-strain foundation pile of low-resistance under water of adjustable fixer length of the present invention is dynamic surveys device, comprise data processor 1, data processor 1 is connected with stress wave generation receiving trap 2 by watertight line, stress wave generation receiving trap 2 includes hammer 3 and stress wave receiving transducer 4, it is characterized in that: stress wave generation receiving trap 2 is provided with an inner chamber body, this inner chamber body is divided into left cavity 2a and right cavity 2b by waterproof interlayer 21, left cavity 2a lower openings, hammer 3 is placed in left cavity 2a, stress wave receiving transducer 4 is placed in right cavity 2b, the bottom laminating of stress wave receiving transducer 4 is equipped every briquetting 41, the housing 2c of stress wave generation receiving trap 2 is extend out to outer and be sealed and matched with housing 2c every briquetting 41, balancing weight 5 and the damping layer 6 of vibration isolation for stress wave receiving transducer 4 being transmitted with left cavity 2a is provided with in right cavity 2b, left cavity 2a is built-in with pushing room 7, pushing top, room 7 is fixed on stress wave generation receiving trap 2 top, bottom extends in the middle part of left cavity 2a, pushing room 7 includes pushing chamber 7a, pushing chamber 7a is connected with and takes out gas injection device 8, take out gas injection device 8 and comprise high pressure gas injection machine 81 and air pump 82, high pressure gas injection machine 81 and air pump 82 are all communicated with pushing 7a top, chamber by conduit, hammer handle 31 top of hammer 3 is stretched in pushing chamber 7a, hammer handle 31 top arranges rubber bodies 31a, rubber bodies 31a coordinates with pushing room 7 inner wall sealing, the tup 32 of hammer 3 be connected with hammer handle 31 and tup 32 in hammer handle 31 bottom, tup 32 is positioned at outside pushing room 7 also can stretch out housing 2c under the promotion of hammer handle 31, left water channel 71 is formed between the left side outer wall of pushing room 7 and the inner left wall of housing 2c, right water channel 72 is formed between the outer right wall of pushing room 7 and waterproof interlayer 21, left cavity 2a is all run through on left water channel 71 and right water channel 72 top, pushing bottom, room 7 is provided with seal flange 9, seal flange 9 and hammer handle 31 cooperation place are provided with and seal floating ring 91, stress wave generation receiving trap 2 is provided with at least one locating device 100, pile foundation is preset with the chucking lug 110 corresponding with locating device 100, locating device 100 includes the positioning motor 101 that is placed in stress wave generation receiving trap 2, be fixedly connected with one end of the first length adjuster 101a after the transmission shaft of positioning motor 101 stretches out housing 2c sidewall, housing 2c sidewall is provided with the second length adjuster 102a, one end and the housing 2c of the second length adjuster 102a fix, the other end and locating piece 102 are fixed, locating piece 102 is provided with contrate gear, contrate gear is rotatably mounted on locating piece 102, the other end of the first length adjuster 101a is connected with perpendicular gear, contrate gear and perpendicular gear are engaged mutually, first length adjuster 101a and the second length adjuster 102a can synchronously shorten or extend, first length adjuster 101a and the second length adjuster 102a has included the first adjustable pipe and the second adjustable pipe, the internal diameter of the first adjustable pipe is greater than the external diameter of the second adjustable pipe, second adjustable pipe is inserted in the first adjustable pipe, first adjustable pipe is provided with row's length-adjustment holes 105, second adjustable pipe is fixed with the card convex that can snap in length-adjustment holes 105, a reference column 103 being provided with threaded body vertically runs through contrate gear and locating piece 102, the screw thread coordinated with the threaded body of reference column 103 is all set in the through hole of contrate gear and locating piece 102, chucking lug 110 top is provided with the smooth the rim of a bowl 110a facilitating reference column 103 to slip into, smooth the rim of a bowl 110a central authorities are for most recess and this place is formed with threaded hole 110b, reference column 103 can screw in threaded hole 110b under the drive of positioning motor 101 and screw thread is fixed with it, data processor 1 includes controller 11, controller 11 controls high pressure gas injection machine 81, the running of air pump 82 and positioning motor 101.
In embodiment, first adjustable pipe of the first length adjuster 101a is fixedly connected with the transmission shaft of positioning motor 101, and second adjustable pipe of the first length adjuster 101a is fixedly connected with perpendicular gear; First adjustable pipe and the housing 2c of the second length adjuster 102a fix, and the second adjustable pipe and the locating piece 102 of the second length adjuster 102a are fixed.
In embodiment, the transmission shaft of positioning motor 101 stretches out housing 2c place and is provided with water-proof block 104.
In embodiment, reference column 103 top is provided with column cap body 103a, and time bottom reference column 103 moves to, column cap body 103a gear prevents reference column 103 from continuing to move down on locating piece 102 top.
In embodiment, include every pressure hard layer 41a and laminating gelatinous layer 41b every briquetting 41, fit every pressure hard layer 41a and stress wave receiving transducer 4 fixing, laminating gelatinous layer 41b side with every pressing hard layer 41a to bond, opposite side extends to outside the housing 2c of stress wave generation receiving trap 2, seals to conflict to coordinate every pressure hard layer 41a with housing 2c.
In embodiment, inner chamber body top is filled with glue-line 23, and glue-line 23 wraps up the watertight line the junction of seal casinghousing 2c and watertight line that stretch in housing 2c.
In embodiment, in the middle part of briquetting 41, inscribe is formed with sealing dogging shoulder 41c, and sealing dogging shoulder 41c top is pressed on housing 2c bottom.
In embodiment, the junction of housing 2c, sealing dogging shoulder 41c and stress wave receiving transducer 4 is provided with sealing ring 41d.
In embodiment, the lower end, left side of housing 2c is provided with balancing leg 22, and the length that balancing leg 22 stretches out housing 2c is equal with the length that laminating gelatinous layer 41b stretches out housing 2c.
In embodiment, spring 73 is placed with in pushing chamber 7a, pushing 7a bottom, chamber is fixed with rubber sealing block 74, spring 73 lower end is fixed on rubber sealing block 74, when the hammer handle 31 of hammer 3 is positioned at the eminence of pushing chamber 7a, spring 73 upper end and rubber bodies 31a clearance fit, when the hammer handle 31 of hammer 3 is positioned at the lower of pushing chamber 7a, spring 73 upper end and rubber bodies 31a apical grafting and spring 73 are compressed.
Concrete using method of the present invention is as follows: during piling, arranges a chucking lug 110 in the top-side of pile foundation, and arranges screw thread at chucking lug 110 inwall, completes preliminary work.Lay through after a period of time at pile foundation in deep water, low strain integrity testing is carried out to pile foundation.Determine the stake footpath of pile foundation in advance, manual adjustments card convex snaps in the length-adjustment holes 105 of correct position, then with steel pipe, stress wave generation receiving trap 2 is delivered to a top, roughly by the threaded hole 110b of reference column 103 pairs of chucking lugs 110, then stress wave generation receiving trap 2 is put down, reference column 103 falls into smooth the rim of a bowl 110a, the threaded hole 110b if reference column 103 does not align, the bottom of reference column 103 can be against on smooth the rim of a bowl 110a, under the gravity of stress wave generation receiving trap 2, reference column 103 can glide along smooth the rim of a bowl 110a a little, slide into the porch of threaded hole 110b, as shown in Figure 1, control positioning motor 101 with controller 11 to operate, reference column 103 is screwed in threaded hole 110b completely, now column cap body 103a is pressed on locating piece 102, balancing leg 24 and laminating gelatinous layer 41b are attached to stake top, air pump 82 is bled, make to be negative pressure in the 7a of pushing chamber, the rubber bodies 31a on hammer handle 31 top is attracted on the eminence of pushing chamber 7a, as shown in Figure 5.When knocking, controller 11 controls high pressure gas injection machine 81 and injects one high voltage pulse gas to pushing chamber 7a, rubber bodies 31a is applied to the downward impulse force of a moment, hammer 3 is driven to move down, rebound after making hammer 3 driven pile top, when hammer 3 moves down, the water body be positioned at below hammer 3 can be extruded, if do not arrange left water channel 71 and right water channel 72, water can flow out from the gap, below of left cavity 2a, and gap is smaller, and water cannot pass through in the short time, water resistance can be very large, is unfavorable for the steady operation of stress wave generation receiving trap 2.After arranging left water channel 71 and right water channel 72, hammer 3 moves down Shi Shuineng from left water channel 71 and right water channel 72 to outflow, can not form high water resistance below hammer 3.Spring 73 is compressed when hammer 3 moves down, and can save bit by bit certain potential energy, assists hammer 3 return, as shown in Figure 6 when hammer 3 resilience.When rebounding behind hammer 3 driven pile top, air pump 82 operates, high pressure gas injection machine 81 stops, rubber bodies 31a and the air at pushing 7a top, chamber take away rapidly by air pump 82, by negative pressure, the hammer handle 31 of hammer 3 is inhaled in the eminence pushing chamber 7a, stop hammer 3 again to fall, hammer 3 moves Shi Shuineng and inwardly flows from left water channel 71 and right water channel 72, high water resistance can not be formed, as shown in Figure 7 above hammer 3.After hammer 3 knocks stake top, stress wave receiving transducer 4 can receive the stress wave shock curve transmitted in stake, and is delivered in data processor 1 by this curve, and data processor 1 pair of waveform shows, analyzes and files.So repeatedly knock three times.After obtaining abundant stress wave curve, control positioning motor 101 and reverse, reference column 103 is screwed out chucking lug 110.Finally stress wave generation receiving trap 2 is mentioned recovery.
Below be only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (10)
1. the low-strain foundation pile of low-resistance under water of adjustable fixer length is dynamic surveys device, comprise data processor (1), described data processor (1) is connected with stress wave generation receiving trap (2) by watertight line, described stress wave generation receiving trap (2) includes hammer (3) and stress wave receiving transducer (4), it is characterized in that: described stress wave generation receiving trap (2) is provided with an inner chamber body, this inner chamber body is divided into left cavity (2a) and right cavity (2b) by waterproof interlayer (21), described left cavity (2a) lower openings, described hammer (3) is placed in left cavity (2a), described stress wave receiving transducer (4) is placed in right cavity (2b), the bottom laminating of described stress wave receiving transducer (4) is equipped every briquetting (41), the described housing (2c) extending out to stress wave generation receiving trap (2) every briquetting (41) outward and be sealed and matched with housing (2c), balancing weight (5) and the damping layer (6) of vibration isolation for stress wave receiving transducer (4) and left cavity (2a) being transmitted is provided with in described right cavity (2b), described left cavity (2a) is built-in with pushing room (7), described pushing room (7) top is fixed on stress wave generation receiving trap (2) top, bottom extends to left cavity (2a) middle part, described pushing room (7) includes pushing chamber (7a), described pushing chamber (7a) is connected with takes out gas injection device (8), described gas injection device (8) of taking out comprises high pressure gas injection machine (81) and air pump (82), described high pressure gas injection machine (81) and air pump (82) are all communicated with pushing chamber (7a) top by conduit, hammer handle (31) top of described hammer (3) is stretched in pushing chamber (7a), hammer handle (31) top arranges rubber bodies (31a), described rubber bodies (31a) coordinates with pushing room (7) inner wall sealing, the tup (32) of described hammer (3) be connected with hammer handle (31) and tup (32) in hammer handle (31) bottom, described tup (32) is positioned at pushing room (7) also can stretch out housing (2c) outward under the promotion of hammer handle (31), left water channel (71) is formed between the left side outer wall of described pushing room (7) and the inner left wall of housing (2c), right water channel (72) is formed between the outer right wall of described pushing room (7) and waterproof interlayer (21), left cavity (2a) is all run through on described left water channel (71) and right water channel (72) top, described pushing room (7) bottom is provided with seal flange (9), described seal flange (9) and hammer handle (31) cooperation place are provided with and seal floating ring (91), described stress wave generation receiving trap (2) is provided with at least one locating device (100), pile foundation is preset with the chucking lug (110) corresponding with locating device (100), described locating device (100) includes the positioning motor (101) that is placed in stress wave generation receiving trap (2), be fixedly connected with one end of the first length adjuster (101a) after the transmission shaft of described positioning motor (101) stretches out housing (2c) sidewall, described housing (2c) sidewall is provided with the second length adjuster (102a), one end of described the second length adjuster (102a) and housing (2c) are fixed, the other end and locating piece (102) are fixed, described locating piece (102) is provided with contrate gear, described contrate gear is rotatably mounted on locating piece (102), the other end of described the first length adjuster (101a) is connected with perpendicular gear, described contrate gear and perpendicular gear are engaged mutually, described the first length adjuster (101a) and the second length adjuster (102a) can synchronously shorten or extend, described the first length adjuster (101a) and the second length adjuster (102a) have included the first adjustable pipe and the second adjustable pipe, the internal diameter of the first described adjustable pipe is greater than the external diameter of the second adjustable pipe, the second described adjustable pipe is inserted in the first adjustable pipe, the first described adjustable pipe is provided with row's length-adjustment holes (105), the second described adjustable pipe is fixed with the card convex that can snap in length-adjustment holes (105), a reference column (103) being provided with threaded body vertically runs through contrate gear and locating piece (102), the screw thread coordinated with the threaded body of reference column (103) is all set in the through hole of described contrate gear and locating piece (102), described chucking lug (110) top is provided with the smooth the rim of a bowl (110a) facilitating reference column (103) to slip into, smooth the rim of a bowl (110a) central authorities are for most recess and this place is formed with threaded hole (110b), described reference column (103) can screw in threaded hole (110b) under the drive of positioning motor (101) and screw thread is fixed with it, described data processor (1) includes controller (11), described controller (11) controls high pressure gas injection machine (81), the running of air pump (82) and positioning motor (101).
2. the low-strain foundation pile of low-resistance under water of adjustable fixer length according to claim 1 is dynamic surveys device, it is characterized in that: the first adjustable pipe of described the first length adjuster (101a) is fixedly connected with the transmission shaft of positioning motor (101), and the second adjustable pipe of the first length adjuster (101a) is fixedly connected with perpendicular gear; First adjustable pipe of described the second length adjuster (102a) and housing (2c) are fixed, and the second adjustable pipe of the second length adjuster (102a) and locating piece (102) are fixed.
3. the low-strain foundation pile of low-resistance under water of adjustable fixer length according to claim 2 is dynamic surveys device, it is characterized in that: the transmission shaft of described positioning motor (101) stretches out housing (2c) place and is provided with water-proof block (104).
4. the low-strain foundation pile of low-resistance under water of adjustable fixer length according to claim 3 is dynamic surveys device, it is characterized in that: described reference column (103) top is provided with column cap body (103a), time bottom described reference column (103) moves to, column cap body (103a) gear prevents reference column (103) from continuing to move down on locating piece (102) top.
5. the low-strain foundation pile of low-resistance under water of adjustable fixer length according to claim 4 is dynamic surveys device, it is characterized in that: described includes every pressure hard layer (41a) and laminating gelatinous layer (41b) every briquetting (41), described fitting every pressure hard layer (41a) and stress wave receiving transducer (4) is fixing, described laminating gelatinous layer (41b) side with every pressing hard layer (41a) to bond, opposite side extends to the housing (2c) of stress wave generation receiving trap (2) outward, described seal to conflict with housing (2c) every pressure hard layer (41a) coordinate.
6. the low-strain foundation pile of low-resistance under water of adjustable fixer length according to claim 5 is dynamic surveys device, it is characterized in that: described inner chamber body top is filled with glue-line (23), described glue-line (23) wraps up the junction of watertight line seal casinghousing (2c) and the watertight line stretched in housing (2c).
7. the low-strain foundation pile of low-resistance under water of adjustable fixer length according to claim 6 is dynamic surveys device, it is characterized in that: described is formed with sealing dogging shoulder (41c) every briquetting (41) middle part inscribe, and described sealing dogging shoulder (41c) top is pressed on housing (2c) bottom.
8. the low-strain foundation pile of low-resistance under water of adjustable fixer length according to claim 7 is dynamic surveys device, it is characterized in that: the junction of described housing (2c), sealing dogging shoulder (41c) and stress wave receiving transducer (4) is provided with sealing ring (41d).
9. the low-strain foundation pile of low-resistance under water of adjustable fixer length according to claim 8 is dynamic surveys device, it is characterized in that: the lower end, left side of described housing (2c) is provided with balancing leg (22), the length that described balancing leg (22) stretches out housing (2c) is equal with the length that housing (2c) is stretched out in laminating gelatinous layer (41b).
10. the low-strain foundation pile of low-resistance under water of adjustable fixer length according to claim 9 is dynamic surveys device, it is characterized in that: in described pushing chamber (7a), be placed with spring (73), described pushing chamber (7a) bottom is fixed with rubber sealing block (74), described spring (73) lower end is fixed on rubber sealing block (74), when the hammer handle (31) of hammer (3) is positioned at the eminence of pushing chamber (7a), spring (73) upper end and rubber bodies (31a) clearance fit, when the hammer handle (31) of hammer (3) is positioned at the lower of pushing chamber (7a), spring (73) upper end and rubber bodies (31a) apical grafting and spring (73) are compressed.
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| CN201410647097.5A CN104314110B (en) | 2014-11-16 | 2014-11-16 | The low-strain foundation pile of low-resistance under water of adjustable fixer length is dynamic surveys device |
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| CN201410647097.5A CN104314110B (en) | 2014-11-16 | 2014-11-16 | The low-strain foundation pile of low-resistance under water of adjustable fixer length is dynamic surveys device |
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| JPH05306923A (en) * | 1992-04-30 | 1993-11-19 | Takenaka Komuten Co Ltd | Three-dimensional method and instrument for measuring surface |
| CN1090044A (en) * | 1993-01-07 | 1994-07-27 | 修朝英 | Portable integrated dynamic test-pile analyzing instrument |
| JPH09196897A (en) * | 1996-01-22 | 1997-07-31 | Mitsubishi Heavy Ind Ltd | Diagnosis method for soundness of underground construction |
| CN201068574Y (en) * | 2007-03-16 | 2008-06-04 | 天津市大地海陆岩土工程技术开发有限公司 | Heave hand hammer large long pile strain detection device |
| CN203551516U (en) * | 2013-10-30 | 2014-04-16 | 天津市建联工程勘测有限公司 | Device for detecting integrality of pile body by using low strain method |
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