CN104452831B - Device is surveyed under water with lower resistance low-strain foundation pile is dynamic - Google Patents
Device is surveyed under water with lower resistance low-strain foundation pile is dynamic Download PDFInfo
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- CN104452831B CN104452831B CN201410647859.1A CN201410647859A CN104452831B CN 104452831 B CN104452831 B CN 104452831B CN 201410647859 A CN201410647859 A CN 201410647859A CN 104452831 B CN104452831 B CN 104452831B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000010410 layer Substances 0.000 claims abstract description 28
- 238000010030 laminating Methods 0.000 claims abstract description 13
- 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
- 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
- 239000000523 sample Substances 0.000 abstract description 5
- 238000012856 packing Methods 0.000 abstract description 2
- 101100204059 Caenorhabditis elegans trap-2 gene Proteins 0.000 description 11
- 238000005259 measurement Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000007547 defect 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
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses and survey device with lower resistance low-strain foundation pile is dynamic under water, 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 has and can use in deepwater high-pressure, hammer and detection probe are carried out merging and are saved artificial, the advantage that when hammer knocks, water resistance is less.
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 survey device with lower resistance low-strain foundation pile is dynamic under water.
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 save water resistance when artificial, hammer knocks less survey device with lower resistance low-strain foundation pile is dynamic under water.
The present invention solves the problems of the technologies described above adopted technical scheme:
Device is surveyed under water with lower resistance low-strain foundation pile is dynamic, 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, wherein: 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, data processor includes controller, and controller controls the running of high pressure gas injection machine and air pump.
For optimizing technique scheme, the concrete measure taked also comprises:
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.
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 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.
Above-mentioned bottom, pushing chamber is fixed with rubber sealing block, and lower spring end is fixed on rubber sealing block.
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.The present invention realizes stress wave generation receiving trap by balancing weight and is pressed in stake top completely, and the vibrations of hammering are not enough to stress wave generation receiving trap jack-up.The gas injection controlling high pressure gas injection machine and air pump by controller is bled running, 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 and save the advantage that when artificial, hammer knocks, water resistance is less.
Accompanying drawing explanation
Fig. 1 is the structural representation of hammer of the present invention when lifting;
Fig. 2 is the structural representation of hammer of the present invention when falling;
Fig. 3 is the structural representation of hammer of the present invention when again lifting;
Fig. 4 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 4 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.
As shown in Figures 1 to 4, of the present invention under water with lower resistance low-strain foundation pile dynamic survey 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, wherein: 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, data processor 1 includes controller 11, and controller 11 controls the running of high pressure gas injection machine 81 and air pump 82.
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.
In embodiment, spring 73 is placed with in pushing chamber 7a, spring 73 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 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.
In embodiment, pushing 7a bottom, chamber is fixed with rubber sealing block 74, and spring 73 lower end is fixed on rubber sealing block 74.
Concrete using method of the present invention is as follows: lay through after a period of time in pile foundation, with steel pipe, stress wave generation receiving trap 2 is delivered to a top, then stress wave generation receiving trap 2 is allowed freely to fall, 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 1.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 2 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 3 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, 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 (7)
1. survey device with lower resistance low-strain foundation pile is dynamic under water, 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 data processor (1) includes controller (11), and described controller (11) controls the running of high pressure gas injection machine (81) and air pump (82).
2. according to claim 1 under water with lower resistance low-strain foundation pile dynamic survey 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.
3. according to claim 2 under water with lower resistance low-strain foundation pile dynamic survey 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).
4. according to claim 3 under water with lower resistance low-strain foundation pile dynamic survey 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.
5. according to claim 4ly survey device with lower resistance low-strain foundation pile is dynamic under water, 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).
6. according to claim 5 under water with lower resistance low-strain foundation pile dynamic survey device, it is characterized in that: in described pushing chamber (7a), be placed with spring (73), described spring (73) 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 (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.
7. according to claim 6 under water with lower resistance low-strain foundation pile dynamic survey device, it is characterized in that: described pushing chamber (7a) bottom is fixed with rubber sealing block (74), described spring (73) lower end is fixed on rubber sealing block (74).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410647859.1A CN104452831B (en) | 2014-11-16 | 2014-11-16 | Device is surveyed under water with lower resistance low-strain foundation pile is dynamic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410647859.1A CN104452831B (en) | 2014-11-16 | 2014-11-16 | Device is surveyed under water with lower resistance low-strain foundation pile is dynamic |
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| CN104452831A CN104452831A (en) | 2015-03-25 |
| CN104452831B true CN104452831B (en) | 2016-01-13 |
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| CN201410647859.1A Active CN104452831B (en) | 2014-11-16 | 2014-11-16 | Device is surveyed under water with lower resistance low-strain foundation pile is dynamic |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107100212B (en) * | 2017-06-15 | 2019-07-09 | 珠海市横琴新区建设工程质量检测中心有限公司 | A kind of equipment for the quick low strain integrity testing of foundation pile |
Citations (5)
| 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 |
| 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 |
-
2014
- 2014-11-16 CN CN201410647859.1A patent/CN104452831B/en active Active
Patent Citations (5)
| 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 |
| 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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| CN104452831A (en) | 2015-03-25 |
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