CN104499514A - Low-strain dynamic testing meter for underwater pile foundation - Google Patents
Low-strain dynamic testing meter for underwater pile foundation Download PDFInfo
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- CN104499514A CN104499514A CN201410848068.5A CN201410848068A CN104499514A CN 104499514 A CN104499514 A CN 104499514A CN 201410848068 A CN201410848068 A CN 201410848068A CN 104499514 A CN104499514 A CN 104499514A
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- stress wave
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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
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a low-strain dynamic testing meter for an underwater pile foundation. A driving hammer and a stress wave receiving probe are integrated in a stress wave generating and receiving device, and meanwhile, the driving hammer falling and retracting automation is realized, the stress wave generating and receiving device is fixed at the top of the pile foundation through a balancing weight and a fixing device, an adhesive fitting gelatinous layer is arranged at the lower end of the stress wave receiving probe, the lower part of a left cavity is provided with a water resistant door capable of being opened and closed, the lower surface of the water resistant door is made of rubber material, when the stress wave generating and receiving device is compressed on the pile, a frame body block presses the pile and is sealed with a pile cap, and then the water resistant door is opened; by means of the structure, the left cavity can always locate at a water-less state, and the influence to the knocking effect due to the friction between the driving hammer and water when the driving hammer falls off is avoided. The low-strain dynamic testing meter for the underwater pile foundation can be used in deep water and high pressure; the driving hammer is combined with the detection probe, the driving hammer can knock the pile under a water-less environment, and the stress wave generating and receiving device has 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 underwater pile low-strain dynamic measure instrument.
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 supporting 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 problem 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, making hammer under water-less environment, strike the underwater pile low-strain dynamic measure instrument of stake, stress wave generation receiving system good fixing effect.
The present invention solves the problems of the technologies described above adopted technical scheme:
Underwater pile low-strain dynamic measure instrument, comprise data processor, data processor is connected with stress wave generation receiving system by watertight line, stress wave generation receiving system includes hammer and stress wave receiving transducer, wherein: stress wave generation receiving system is provided with an inner chamber body, this inner chamber body is divided into left cavity and right cavity by separation layer, 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 system 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 system 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 exhauster, high-pressure gas injection machine and air exhauster 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 cavity is built-in with closing device, closing device includes upper left drive, upper right drive, lower-left drive and bottom right drive and folding motor, wherein, upper left drive, upper right drive is fixed in left cavity, lower-left drive and bottom right drive are separately fixed at left cavity bottom, folding motor and upper left drive or upper right drive are in transmission connection, upper left drive, upper right drive is wound with the first driving-belt in 8-shaped, the second driving-belt is wound with in 0 font between upper left drive and lower-left drive, the 3rd driving-belt is wound with in 0 font between upper right drive and bottom right drive, left cavity lower openings place is provided with water proof door, water proof door includes framework block, left-hand door door leaf block and right door leaf block, framework block is fixed on left cavity, framework block, left-hand door door leaf block and the combination of right door leaf block are by left cavity lower seal, left-hand door door leaf block and right door leaf block are divided into two-layer up and down, upper strata is hard plate, lower floor is flexible rubber body, framework block is that flexible rubber makes, lower-left drive and left-hand door door leaf block are in transmission connection, bottom right drive and right door leaf block are in transmission connection, when lower-left drive and bottom right drive rotate, left-hand door door leaf block and right door leaf block can be opened or close, stress wave generation receiving system is provided with at least one positioner, pile foundation is preset with the chucking lug corresponding with positioner, positioner includes a positioning motor being placed in stress wave generation receiving system and the locating piece be fixed in housing sidewall, the power transmission shaft of positioning motor is stretched out housing sidewall and is engaged with the contrate gear that locating piece is arranged by perpendicular gear, contrate gear is arranged on locating piece and can rotates relative to locating piece, 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, in chucking lug, threaded engagement has lock line slide block, lock line slide block 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 screwed hole, reference column can screw in screwed hole under the drive of positioning motor and screw thread is fixed with it, when reference column screws in screwed hole completely, frictional force between reference column and screwed hole is greater than the frictional force between chucking lug and lock line slide block, when reference column upwards produces, lock line slide block is produced chucking lug with lock line slide block secure fit by reference column, data processor includes controller, controller controls positioning motor, folding motor, the running of high-pressure gas injection machine and air exhauster.
For optimizing technique scheme, the concrete measure taked also comprises:
The upper strata right-hand member of above-mentioned left-hand door door leaf block and the upper strata left end of right door leaf block are provided with block rubber, the lower floor of left-hand door door leaf block is shorter than its upper strata, its upper strata is longer than by the lower floor of right door leaf block, the upper strata right-hand member of left-hand door door leaf block and the upper strata left end apical grafting of right door leaf block, lower floor's right-hand member of left-hand door door leaf block and lower floor's left end apical grafting of right door leaf block; The upper strata of left-hand door door leaf block and lower floor's contact surface of right door leaf block are for being sealed and matched.
Arrange support in above-mentioned left cavity, folding motor, upper left drive, upper right drive are all placed on support.
The power 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 system, 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 joint ring.
Spring is placed with in above-mentioned pushing chamber, lower spring end is fixed on pushing bottom, chamber, when the hammer handle of hammer is positioned at the eminence in pushing chamber, and spring upper end and rubber bodies matched in clearance, 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 system by the present invention, achieve hammer to fall and the automation of packing up simultaneously, made the axis of the center of gravity of stress wave generation receiving system 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.The present invention devises a kind of structure that left cavity can be made always to remain on anhydrous state, and anti-sealing enters when left cavity makes hammer fall and water friction, affects beating effect.Concrete structure designs a capable of opening and closing water proof door in left cavity bottom, water proof door soffit is elastomeric material, when stress wave generation receiving system is pressed in stake, framework block is pressed in stake formed with pile cover and seals and then open water proof door, falls hammer and knocks pile crown.In order to make stress wave generation receiving system compress pile crown, the present invention devises fastening devices further, for stress wave generation receiving system 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, if directly arrange screwed hole on chucking lug, and does not arrange smooth the rim of a bowl, the then more difficult complete matching screwed hole of reference column when transferring stress wave generation receiving system, increase operation easier, improve fault rate, if transfer failure, also stress wave generation receiving system to be packed up and transfer again, if directly arrange screwed hole on chucking lug, and arrange smooth the rim of a bowl, then cost is higher, because chucking lug can forever be stayed in pile foundation, very uneconomical.And solution of the present invention be by lock line slide block and chucking lug between screw thread constant intensity arrange lower, what arranged by the screw thread constant intensity between reference column and lock line slide block is higher, like this when reference column screws in after in lock line slide block, when oppositely screwing out again, lock line slide block can be made to rotate relative to chucking lug, thus lock line slide block is taken out from chucking lug.Can take away after lock line slide block of the present invention is finished, effectively cost-saving.And be that stress wave has sampled and automatically to take away with stress wave generation receiving system afterwards, avoid the human cost manually taken lock line slide block away and produce.Line slide block has smooth the rim of a bowl, and this smooth the rim of a bowl is used for facilitating reference column to find screwed hole, as long as reference column enters smooth the rim of a bowl, at the Gravitational sliding of device itself to screwed hole place, can effectively reduce the positioning difficulty of this device.When reference column screws in screwed 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 system, thus stress wave generation receiving system is securely pressed in pile foundation surface.
The present invention has also done further improvement, such as, realizes upper left drive by 8-shaped drive mechanism, upper right drive is synchronized rotates backward, and then drives the synchronous on-off of left-hand door door leaf block and right door leaf block; Arrange many places at left-hand door door leaf block and right door leaf block place to seal: the upper strata of left-hand door door leaf block and the upper strata apical grafting of right door leaf block seal, the lower floor of left-hand door door leaf block and lower floor's apical grafting sealing of right door leaf block, and lower floor's contact surface of the upper strata of left-hand door door leaf block and right door leaf block seals, these hermetically-sealed constructions effectively stop water under high pressure through water proof door.Adopt the setting of sealing dogging shoulder 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 joint 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, making hammer under water-less environment, strike the advantage of stake, stress wave generation receiving system good fixing effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of stress wave generation receiving system of the present invention;
Fig. 2 is the drive mechanism schematic diagram of closing device;
Fig. 3 is the A portion schematic enlarged-scale view of Fig. 2;
Fig. 4 is the structural representation of water proof door;
Fig. 5 is schematic diagram when hammer of the present invention lifts, fixed leg not yet screws in lock line slide block;
Fig. 6 is that the present invention locks line slide block and is fixed on structural representation in fixing ear;
Fig. 7 is the top view of pile foundation;
Fig. 8 is schematic diagram when hammer of the present invention lifts, fixed leg screws in lock line slide block;
Fig. 9 is the structural representation of closing device when opening;
Figure 10 is the structural representation of hammer of the present invention when falling;
Figure 11 is that the present invention detects the structural representation terminated when being screwed out by lock line slide block;
Figure 12 is structural representation when stress wave generation receiving system is mentioned at the end of the present invention detects;
Figure 13 is the structure diagram of low-strain dynamic measure instrument of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Fig. 1 is to Figure 13 shows that structural representation of the present invention.
Reference numeral is wherein: data processor 1, controller 11, stress wave generation receiving system 2, left cavity 2a, right cavity 2b, housing 2c, separation layer 21, support 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, joint ring 41d, balancing weight 5, damping layer 6, pushing room 7, pushing chamber 7a, spring 71, take out gas injection device 8, high-pressure gas injection machine 81, air exhauster 82, closing device 9, upper left drive 91, upper right drive 92, lower-left drive 93, bottom right drive 94, folding motor 95, first driving-belt 96, second driving-belt 97, 3rd driving-belt 98, positioner 100, positioning motor 101, locating piece 102, reference column 103, column cap body 103a, water-proof block 104, chucking lug 110, lock line slide block 111, smooth the rim of a bowl 111a, screwed hole 111b, water proof door 120, framework block 121, left-hand door door leaf block 122, right door leaf block 123, hard plate 124, flexible rubber body 125, block rubber 126.
As shown in figure 1 to figure 13, underwater pile low-strain dynamic measure instrument of the present invention, comprise data processor 1, data processor 1 is connected with stress wave generation receiving system 2 by watertight line, stress wave generation receiving system 2 includes hammer 3 and stress wave receiving transducer 4, wherein: stress wave generation receiving system 2 is provided with an inner chamber body, this inner chamber body is divided into left cavity 2a and right cavity 2b by separation layer 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 system 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 system 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 exhauster 82, high-pressure gas injection machine 81 and air exhauster 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 cavity 2a is built-in with closing device 9, closing device 9 includes upper left drive 91, upper right drive 92, lower-left drive 93 and bottom right drive 94 and folding motor 95, wherein, upper left drive 91, upper right drive 92 is fixed in left cavity 2a, lower-left drive 93 and bottom right drive 94 are separately fixed at bottom left cavity 2a, folding motor 95 is in transmission connection with upper left drive 91 or upper right drive 92, upper left drive 91, upper right drive 92 is wound with the first driving-belt 96 in 8-shaped, the second driving-belt 97 is wound with in 0 font between upper left drive 91 and lower-left drive 93, the 3rd driving-belt 98 is wound with in 0 font between upper right drive 92 and bottom right drive 94, left cavity 2a lower openings place is provided with water proof door 120, water proof door 120 includes framework block 121, left-hand door door leaf block 122 and right door leaf block 123, framework block 121 is fixed on left cavity 2a, framework block 121, left-hand door door leaf block 122 and right door leaf block 123 combine left cavity 2a lower seal, left-hand door door leaf block 122 and right door leaf block 123 are divided into two-layer up and down, upper strata is hard plate 124, lower floor is flexible rubber body 125, framework block 121 is flexible rubber making, lower-left drive 93 and left-hand door door leaf block 122 are in transmission connection, bottom right drive 94 and right door leaf block 123 are in transmission connection, when lower-left drive 93 and bottom right drive 94 rotate, left-hand door door leaf block 122 and right door leaf block 123 can be opened or close, stress wave generation receiving system 2 is provided with at least one positioner 100, pile foundation is preset with the chucking lug 110 corresponding with positioner 100, positioner 100 includes a positioning motor 101 being placed in stress wave generation receiving system 2 and the locating piece 102 be fixed on housing 2c sidewall, the power transmission shaft of positioning motor 101 is stretched out housing 2c sidewall and is engaged with the contrate gear that locating piece 102 is arranged by perpendicular gear, contrate gear is arranged on locating piece 102 and can rotates relative to locating piece 102, 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, in chucking lug 110, threaded engagement has lock line slide block 111, lock line slide block 111 top is provided with the smooth the rim of a bowl 111a facilitating reference column 103 to slip into, smooth the rim of a bowl 111a central authorities are for most recess and this place is formed with screwed hole 111b, reference column 103 can screw in screwed hole 111b under the drive of positioning motor 101 and screw thread is fixed with it, when reference column 103 screws in screwed hole 111b completely, frictional force between reference column 103 and screwed hole 111b is greater than the frictional force between chucking lug 110 and lock line slide block 111, when reference column 103 upwards produces, lock line slide block 111 is produced chucking lug 110 with lock line slide block 111 secure fit by reference column 103, data processor 1 includes controller 11, controller 11 controls positioning motor 101, folding motor 95, the running of high-pressure gas injection machine 81 and air exhauster 82.
In embodiment, the upper strata right-hand member of left-hand door door leaf block 122 and the upper strata left end of right door leaf block 123 are provided with block rubber 126, the lower floor of left-hand door door leaf block 122 is shorter than its upper strata, its upper strata is longer than by the lower floor of right door leaf block 123, the upper strata right-hand member of left-hand door door leaf block 122 and the upper strata left end apical grafting of right door leaf block 123, lower floor's right-hand member of left-hand door door leaf block 122 and lower floor's left end apical grafting of right door leaf block 123; The upper strata of left-hand door door leaf block 122 and lower floor's contact surface of right door leaf block 123 are for being sealed and matched.
In embodiment, arrange support 22 in left cavity 2a, folding motor 95, upper left drive 91, upper right drive 92 are all placed on support 22.
In embodiment, the power 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 system 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 joint ring 41d.
In embodiment, spring 71 is placed with in pushing chamber 7a, spring 71 lower end is fixed on pushing 7a bottom, chamber, when the hammer handle 31 of hammer 3 is positioned at the eminence of pushing chamber 7a, spring 71 upper end and rubber bodies 31a matched in clearance, when the hammer handle 31 of hammer 3 is positioned at the lower of pushing chamber 7a, spring 71 upper end and rubber bodies 31a apical grafting and spring 71 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, gets prefabricated lock line slide block 111 and screws in this screw thread, complete preparation.Lay through after a period of time in pile foundation, with steel pipe, stress wave generation receiving system 2 is delivered to a top, stake top should be cleaned before putting down stress wave generation receiving system 2, the silt of removing alluvial on stake top, then reference column 103 is aimed at the screwed hole 111b of lock line slide block 111, then put down by stress wave generation receiving system 2, left-hand door door leaf block 122, right door leaf block 123 keep closed condition in the process, and left cavity 2a is sealed.Reference column 103 falls into smooth the rim of a bowl 111a, the screwed hole 111b if reference column 103 does not align, the bottom of reference column 103 can be against on smooth the rim of a bowl 111a, under the gravity of stress wave generation receiving system 2, reference column 103 can glide along smooth the rim of a bowl 111a a little, slide into the entrance of screwed hole 111b, as shown in Figure 5, control positioning motor 101 with controller 11 to operate, reference column 103 is screwed in screwed hole 111b completely, now column cap body 103a is pressed on locating piece 102, framework block 121, left-hand door door leaf block 122, right door leaf block 123 and laminating gelatinous layer 41b are extruded distortion, be attached to stake top hermetically, air exhauster 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 8, control folding motor 95 to operate, through the transmission of four drives, left-hand door door leaf block 122, right door leaf block 123 inwardly rotate, and are exposed by left cavity 2a cavity, as shown in Figure 9, 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, drives hammer 3 to move down, knocks stake top, as shown in Figure 10, spring 71 is compressed when hammer 3 moves down, and can save bit by bit certain potential energy, assists hammer 3 return when hammer 3 resilience.When rebounding behind hammer 3 driven pile top, air exhauster 82 operates, and high-pressure gas injection machine 81 stops, and rubber bodies 31a and the air at pushing 7a top, chamber take away rapidly by air exhauster 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.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 folding motor 95 to reverse, through the transmission of four drives, left-hand door door leaf block 122, right door leaf block 123 are to inner rotary, reseal left cavity 2a, and then control positioning motor 101 and reverse, lock line slide block 111 is screwed out chucking lug 110, as shown in figure 11.Finally stress wave generation receiving system 2 is mentioned recovery, as shown in figure 12.
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. underwater pile low-strain dynamic measure instrument, comprise data processor (1), described data processor (1) is connected with stress wave generation receiving system (2) by watertight line, described stress wave generation receiving system (2) includes hammer (3) and stress wave receiving transducer (4), it is characterized in that: described stress wave generation receiving system (2) is provided with an inner chamber body, this inner chamber body is divided into left cavity (2a) and right cavity (2b) by separation layer (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 system (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 system (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 exhauster (82), described high-pressure gas injection machine (81) and air exhauster (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), described left cavity (2a) is built-in with closing device (9), described closing device (9) includes upper left drive (91), upper right drive (92), lower-left drive (93), bottom right drive (94) and folding motor (95), wherein, described upper left drive (91), upper right drive (92) is fixed in left cavity (2a), lower-left drive (93) and bottom right drive (94) are separately fixed at left cavity (2a) bottom, described folding motor (95) is in transmission connection with upper left drive (91) or upper right drive (92), described upper left drive (91), upper right drive (92) is upper is wound with the first driving-belt (96) in 8-shaped, the second driving-belt (97) is wound with in 0 font between described upper left drive (91) and lower-left drive (93), the 3rd driving-belt (98) is wound with in 0 font between described upper right drive (92) and bottom right drive (94), described left cavity (2a) lower openings place is provided with water proof door (120), described water proof door (120) includes framework block (121), left-hand door door leaf block (122) and right door leaf block (123), described framework block (121) is fixed on left cavity (2a), described framework block (121), left-hand door door leaf block (122) and right door leaf block (123) combination are by left cavity (2a) lower seal, described left-hand door door leaf block (122) and right door leaf block (123) are divided into two-layer up and down, upper strata is hard plate (124), lower floor is flexible rubber body (125), described framework block (121) is flexible rubber making, described lower-left drive (93) and left-hand door door leaf block (122) are in transmission connection, described bottom right drive (94) and right door leaf block (123) are in transmission connection, when lower-left drive (93) and bottom right drive (94) rotate, left-hand door door leaf block (122) and right door leaf block (123) can be opened or close, described stress wave generation receiving system (2) is provided with at least one positioner (100), pile foundation is preset with the chucking lug (110) corresponding with positioner (100), described positioner (100) includes a positioning motor (101) being placed in stress wave generation receiving system (2) and the locating piece (102) be fixed on housing (2c) sidewall, the power transmission shaft of described positioning motor (101) is stretched out housing (2c) sidewall and is engaged by the upper contrate gear arranged of perpendicular gear and locating piece (102), described contrate gear is arranged on locating piece (102) and can rotates relative to locating piece (102), 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), in described chucking lug (110), threaded engagement has lock line slide block (111), described lock line slide block (111) top is provided with the smooth the rim of a bowl (111a) facilitating reference column (103) to slip into, smooth the rim of a bowl (111a) central authorities are for most recess and this place is formed with screwed hole (111b), described reference column (103) can screw in screwed hole (111b) under the drive of positioning motor (101) and screw thread is fixed with it, when reference column (103) screws in screwed hole (111b) completely, frictional force between reference column (103) and screwed hole (111b) is greater than the frictional force between chucking lug (110) and lock line slide block (111), when described reference column (103) upwards produces, described reference column (103) will be locked line slide block (111) with lock line slide block (111) secure fit and produce chucking lug (110), described data processor (1) includes controller (11), described controller (11) controls positioning motor (101), folding motor (95), the running of high-pressure gas injection machine (81) and air exhauster (82).
2. underwater pile low-strain dynamic measure instrument according to claim 1, it is characterized in that: the upper strata right-hand member of described left-hand door door leaf block (122) and the upper strata left end of right door leaf block (123) are provided with block rubber (126), the lower floor of described left-hand door door leaf block (122) is shorter than its upper strata, its upper strata is longer than by the lower floor of described right door leaf block (123), the upper strata right-hand member of described left-hand door door leaf block (122) and the upper strata left end apical grafting of right door leaf block (123), lower floor's right-hand member of described left-hand door door leaf block (122) and lower floor's left end apical grafting of right door leaf block (123), the upper strata of described left-hand door door leaf block (122) and lower floor's contact surface of right door leaf block (123) are for being sealed and matched.
3. underwater pile low-strain dynamic measure instrument according to claim 2, it is characterized in that: arrange support (22) in described left cavity (2a), described folding motor (95), upper left drive (91), upper right drive (92) are all placed on support (22).
4. underwater pile low-strain dynamic measure instrument according to claim 3, is characterized in that: the power transmission shaft of described positioning motor (101) stretches out housing (2c) place and is provided with water-proof block (104).
5. underwater pile low-strain dynamic measure instrument according to claim 4, 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.
6. underwater pile low-strain dynamic measure instrument according to claim 5, 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 system (2) outward, described seal to conflict with housing (2c) every pressure hard layer (41a) coordinate.
7. underwater pile low-strain dynamic measure instrument according to claim 6, 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).
8. underwater pile low-strain dynamic measure instrument according to claim 7, 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.
9. underwater pile low-strain dynamic measure instrument according to claim 8, is characterized in that: described housing (2c), sealing dogging shoulder (41c) and the junction of stress wave receiving transducer (4) are provided with joint ring (41d).
10. underwater pile low-strain dynamic measure instrument according to claim 9, it is characterized in that: in described pushing chamber (7a), be placed with spring (71), described spring (71) lower end is fixed on pushing chamber (7a) bottom, when the hammer handle (31) of hammer (3) is positioned at the eminence of pushing chamber (7a), spring (71) upper end and rubber bodies (31a) matched in clearance, when the hammer handle (31) of hammer (3) is positioned at the lower of pushing chamber (7a), spring (71) upper end and rubber bodies (31a) apical grafting and spring (71) are compressed.
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| CN201410848068.5A CN104499514B (en) | 2014-12-31 | 2014-12-31 | Underwater pile low-strain dynamic measure instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410848068.5A CN104499514B (en) | 2014-12-31 | 2014-12-31 | Underwater pile low-strain dynamic measure instrument |
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| Publication Number | Publication Date |
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| CN104499514A true CN104499514A (en) | 2015-04-08 |
| CN104499514B CN104499514B (en) | 2016-03-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811808A (en) * | 2019-02-19 | 2019-05-28 | 武汉岩海工程技术有限公司 | A kind of measuring instrument and field surveillance system for Low Strain Dynamic Testing of Piles |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05306923A (en) * | 1992-04-30 | 1993-11-19 | Takenaka Komuten Co Ltd | Three-dimensional method and instrument for measuring surface |
| 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 |
-
2014
- 2014-12-31 CN CN201410848068.5A patent/CN104499514B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05306923A (en) * | 1992-04-30 | 1993-11-19 | Takenaka Komuten Co Ltd | Three-dimensional method and instrument for measuring surface |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811808A (en) * | 2019-02-19 | 2019-05-28 | 武汉岩海工程技术有限公司 | A kind of measuring instrument and field surveillance system for Low Strain Dynamic Testing of Piles |
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| CN104499514B (en) | 2016-03-09 |
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Effective date of registration: 20170405 Address after: 223411 Huaian City, Jiangsu Province High Town Lianshui County Jinshiyuan Trade City No. 22 106-107 Patentee after: GUO LIAN CONSTRUCTION GROUP CO., LTD. Address before: Jiangdong District in Zhejiang province Ningbo City Road 315040 CAS No. 1312 building 404 north three scholarly Jingyuan Patentee before: Liang Xiaping Patentee before: Chen Liming Patentee before: Lai Zhixiang Patentee before: Wang Haijun |
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