CN105651823A - Wharf's foundation pile damage detecting instrument underwater arrangement device, detection device and method - Google Patents

Wharf's foundation pile damage detecting instrument underwater arrangement device, detection device and method Download PDF

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Publication number
CN105651823A
CN105651823A CN201511009076.1A CN201511009076A CN105651823A CN 105651823 A CN105651823 A CN 105651823A CN 201511009076 A CN201511009076 A CN 201511009076A CN 105651823 A CN105651823 A CN 105651823A
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CN
China
Prior art keywords
foundation pile
wharf
under water
wharf foundation
pile damage
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Application number
CN201511009076.1A
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Chinese (zh)
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CN105651823B (en
Inventor
苏静波
曹爱武
翟剑峰
李肖
诸裕良
翟秋
吉同元
秦网根
孙阳
马志国
李昂
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Hohai University HHU
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Hohai University HHU
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Priority to CN201511009076.1A priority Critical patent/CN105651823B/en
Publication of CN105651823A publication Critical patent/CN105651823A/en
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Publication of CN105651823B publication Critical patent/CN105651823B/en
Expired - Fee Related legal-status Critical Current
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance

Abstract

The invention discloses a wharf's foundation pile damage detecting instrument underwater arrangement device, a detection device and a method. The wharf's foundation pile damage detecting instrument underwater arrangement device is manufactured according to cross-section shape of a foundation pile and by the utilization of a highly elastic material, and can slightly deform to adapt to uneven surface of the foundation pile. A wharf's foundation pile damage detecting instrument can be placed underwater at a position to be detected, and the detecting instrument clings to the surface of the foundation pile so as to realize detection of the wharf's foundation pile underwater detection points and better judge damage conditions of the wharf's foundation pile.

Description

Wharf Foundation Pile damage check instrument arrangement apparatus under water, detecting device and method
Technical field
The present invention relates to a kind of Wharf Foundation Pile damage check instrument arrangement apparatus under water, detecting device and method.
Background technology
Long piled wharf is one of widely used structure in port engineering field, the safety detection of dock structure, the non-destructive tests damage position to finding harbour in time, extends the service life of harbour, has great importance. Dynamic Non-Destruction Measurement, as the detection method of emerging hidden dangers in project and damage, is just becoming the hot issue of Chinese scholars research.
Dynamic testing, with its original mechanics Cleaning Principle, diversified detection method and the accuracy of detection meeting engineering demand, becomes the method that current harbour Non-Destructive Testing is the most commonly used. Structural damage can cause structural dynamic characteristic to change, as long as therefore can find the amount of some reflection structural dynamic characteristic change, i.e. damage sensitive feature, directly its situation of change before and after damage of contrast gets final product identification of damage. Damage sensitive feature conventional during current Damage Assessment Method has: frequency, the vibration shape, modal criterion, coordinate modal criterion, the modal curvature vibration shape, modal strain energy, Modal Flexibility, residue modal forces etc.
At present when carrying out on-the-spot test, knocking, with little power hammer, the diverse location that foundation pile is waterborne, corresponding detecting instrument is arranged and is confined to foundation pile above water, obtains the mechanical admittance curves of Wharf Foundation Pile different measuring points, thus identifying the damage sensitive feature of Wharf Foundation Pile. But Wharf Foundation Pile is predominantly located under water. Owing to detecting instrument is difficult to mounting arrangements under water, so the acquisition for harbour underwater portion measuring point curve is comparatively difficult. Need we develop a kind of can by the device of Wharf Foundation Pile damage check instrument layout to measuring point under water.
Summary of the invention
The technical problem to be solved is to provide a kind of Wharf Foundation Pile damage check instrument arrangement apparatus under water, it is a kind of by the damage check instrument layout of Wharf Foundation Pile to fixing device under water, lossless detection method can be utilized to carry out Wharf Foundation Pile damage check.
The present invention solves above-mentioned technical problem by the following technical solutions:
On the one hand, the present invention provides a kind of Wharf Foundation Pile damage check instrument arrangement apparatus under water, including the buckle body of ring-type and be positioned at two free ends at snap open place, reinforcing cord, weight, measurement rope; The inner side of described buckle body is provided with some flutings, in order to place detecting instrument; An internal through wires hole it is also respectively provided with, in order to place the connecting line of detecting instrument in the outside of each fluting; The outside of each internal through wires hole is also respectively provided with an external threads hole, in order to place connecting line and to measure rope; Measure on rope with scale, lay with the fixed point realizing device for this device of handling; Two free ends are connected by fixed screw; The junction of free end and buckle body is also respectively provided with a lacing hole, and reinforcing cord is fixing with weight after lacing hole to be connected; Weight is additionally provided with weight pull rope, in order to control the degree of tightness of reinforcing cord.
As the further prioritization scheme of the present invention, the shape of buckle body is determined according to the shape of foundation pile.
As the further prioritization scheme of the present invention, this device also includes the spring being enclosed within fixed screw.
As the further prioritization scheme of the present invention, the inwall of lacing hole is smooth.
As the further prioritization scheme of the present invention, buckle body adopts highly elastic material to make.
As the further prioritization scheme of the present invention, measure one end radius radius more than external threads hole of rope.
As the further prioritization scheme of the present invention, fluting, internal through wires hole, external threads hole are evenly distributed on buckle body.
On the other hand, the present invention provides a kind of Wharf Foundation Pile damage detection apparatus, including Wharf Foundation Pile damage check instrument arrangement apparatus under water as above, at least one detecting instrument, data acquisition unit, PC, wherein, each detecting instrument is separately positioned in the fluting of Wharf Foundation Pile damage check instrument arrangement apparatus under water; Harvester is connected with each detecting instrument respectively by connecting line, for gathering the detection data of each detecting instrument; PC is connected with harvester, is recorded for the data that harvester is collected and analyzes.
As the further prioritization scheme of the present invention, detecting instrument is acceleration transducer.
On the other hand, the present invention provides a kind of Wharf Foundation Pile damage detecting method, adopts Wharf Foundation Pile damage detection apparatus as above to detect, comprises the following steps:
Step 1, is placed on the fluting place of Wharf Foundation Pile damage check instrument arrangement apparatus under water by detecting instrument, and connecting line is by being connected with data acquisition unit behind internal through wires hole and external threads hole;
Step 2, measurement is restricted through external threads hole, reinforcing cord is fixing with weight after lacing hole to be connected, weight pull rope is connected with weight, Wharf Foundation Pile damage check instrument arrangement apparatus under water is enclosed within foundation pile, by fixed screw, the free end of Wharf Foundation Pile damage check instrument arrangement apparatus under water tentatively being fixed, now weight pull rope is in stress;
Step 3, by measuring rope, Wharf Foundation Pile damage check instrument arrangement apparatus under water is placed into position to be detected, now weight pull rope no longer stress, reinforcing cord is tightened up by weight under the effect of self gravitation, makes Wharf Foundation Pile damage check instrument arrangement apparatus under water be fixed on position to be detected;
Step 4, detection data are transmitted to data acquisition unit by detecting instrument by connecting line, PC is connected with harvester and data that harvester is collected are recorded and analyze, it is thus achieved that the mechanical admittance curves of position to be detected and Wharf Foundation Pile damage sensitive feature, thus drawing the degree of impairment of Wharf Foundation Pile.
The present invention adopts above technical scheme compared with prior art, have following technical effect that the present invention can realize Wharf Foundation Pile damage check instrument layout to measuring point under water, so that obtaining the mechanical admittance curves of measuring point under water, thus analyzing Wharf Foundation Pile damage sensitive feature, judge that the damage of Wharf Foundation Pile is hindered position and hindered degree with damage more accurately. Simple in construction, easy to operate.
Accompanying drawing explanation
Fig. 1 is Wharf Foundation Pile damage check instrument arrangement apparatus plane graph under water of the present invention.
Fig. 2 is Wharf Foundation Pile damage check instrument arrangement apparatus free end portion schematic diagram under water of the present invention.
Fig. 3 is Wharf Foundation Pile damage check instrument arrangement apparatus slotted section schematic diagram under water of the present invention.
Fig. 4 is Wharf Foundation Pile damage detection apparatus through wires hole place of the present invention cross section sectional drawing.
Wherein, 1-foundation pile;2-Wharf Foundation Pile damage check instrument arrangement apparatus under water; 3-data acquisition unit; 4-PC machine; 5-connecting line; 6-fixed screw; 7-spring; 8-lacing hole; 9-reinforcing cord; 10-weight; 11-weight pull rope; 12-slots; The internal through wires hole of 13-; 14-external threads hole; 15-measures rope.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is described in further detail:
Wharf Foundation Pile damage check instrument arrangement apparatus under water as shown in Figure 1, can make variously-shaped, for the annular of Fig. 1 according to foundation pile section form. Material adopts rubber, in order to adapt to the foundation pile surface irregularity owing to the reasons such as aquatic organism attachment, erosion cause. As in figure 2 it is shown, fixed screw is fixed for the preliminary of device, spring ensures after fixed screw is tentatively fixed, and leaves space and can move up and down on Wharf Foundation Pile for device; Lacing hole, in order to allow reinforcing cord better slide, carries out smooth treatment. As it is shown on figure 3, internal through wires hole, external threads hole, fluting are evenly distributed in instrument internal and surface. Measure on rope with scale, in order to measure instrument layout to specifying position measurement.
As shown in Figure 4, Wharf Foundation Pile damage detection apparatus includes Wharf Foundation Pile, Wharf Foundation Pile damage check instrument arrangement apparatus under water, data acquisition unit, PC, connecting line composition.
The detection under water of Wharf Foundation Pile damage utilizes this Wharf Foundation Pile damage detection apparatus to carry out, particularly as follows: Wharf Foundation Pile damage check instrument arrangement apparatus under water is enclosed within and need to carry out on the Wharf Foundation Pile of damage check, detecting instrument is placed at fluting place, connecting line is connected to data acquisition unit by internal through wires hole and external threads hole, is connected to PC 4 and carries out data record and analysis. Measuring rope and penetrate external threads hole, one end is a bit larger tham external threads hole, for stablizing apparatus for placing, at device symmetry external threads hole place, can respectively penetrate a measurement rope. Now weight pull rope is in stress. After detecting instrument installation, connection complete, carry out the preliminary fixing of device by fixed screw so that device can move up and down at Wharf Foundation Pile under the pulling measuring rope. By measuring rope, device being placed into ideal position, now weight pull rope no longer stress, is in relaxed state, and under gravity, reinforcing cord is tightened up by weight, and now detecting instrument is fixed on position to be detected under water.
In order to measure rope better, the operation of weight pull rope, can fixing a Wharf Foundation Pile damage check instrument arrangement apparatus under water at foundation pile above water, measurement be restricted, weight pull rope penetrates the outside wire rope handling sub-aperture of damage check instrument arrangement apparatus under water waterborne. If foundation pile multiple positions under water need to carry out damage check, device can be worn into a string carrying out and above-mentioned lay operation.
After position has been detected under water, only need to drawing and carry weight pull rope, reinforcing cord is no longer influenced by the effect of weight gravity, and under the action of the spring, reinforcing cord is released; By measuring rope device risen to aquatic location, then unclamp reinforcing screw and remove.
The above; it is only the detailed description of the invention in the present invention; but protection scope of the present invention is not limited thereto; any people being familiar with this technology is in the technical scope that disclosed herein; it is appreciated that the conversion or replacement expected; what all should be encompassed in the present invention comprises within scope, and therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.

Claims (10)

1. Wharf Foundation Pile damage check instrument arrangement apparatus under water, it is characterised in that the buckle body including ring-type and two free ends being positioned at snap open place, reinforcing cord, weight, measurement rope;
The inner side of described buckle body is provided with some flutings, in order to place detecting instrument; An internal through wires hole it is also respectively provided with, in order to place the connecting line of detecting instrument in the outside of each fluting; The outside of each internal through wires hole is also respectively provided with an external threads hole, in order to place connecting line and to measure rope; Measure on rope with scale, lay with the fixed point realizing device for this device of handling;
Two free ends are connected by fixed screw; The junction of free end and buckle body is also respectively provided with a lacing hole, and reinforcing cord is fixing with weight after lacing hole to be connected; Weight is additionally provided with weight pull rope, in order to control the degree of tightness of reinforcing cord.
2. Wharf Foundation Pile damage check instrument arrangement apparatus under water according to claim 1, it is characterised in that the shape of buckle body is determined according to the shape of foundation pile.
3. Wharf Foundation Pile damage check instrument arrangement apparatus under water according to claim 1, it is characterised in that this device also includes the spring being enclosed within fixed screw.
4. Wharf Foundation Pile damage check instrument arrangement apparatus under water according to claim 1, it is characterised in that the inwall of lacing hole is smooth.
5. Wharf Foundation Pile damage check instrument arrangement apparatus under water according to claim 1, it is characterised in that buckle body adopts highly elastic material to make.
6. Wharf Foundation Pile damage check instrument arrangement apparatus under water according to claim 1, it is characterised in that measure one end radius radius more than external threads hole of rope.
7. Wharf Foundation Pile damage check instrument arrangement apparatus under water according to claim 1, it is characterised in that fluting, internal through wires hole, external threads hole are evenly distributed on buckle body.
8. Wharf Foundation Pile damage detection apparatus, it is characterized in that, including such as the Wharf Foundation Pile damage check instrument arrangement apparatus under water as described in arbitrary in claim 1 to 7, at least one detecting instrument, data acquisition unit, PC, wherein, each detecting instrument is separately positioned in the fluting of Wharf Foundation Pile damage check instrument arrangement apparatus under water; Harvester is connected with each detecting instrument respectively by connecting line, for gathering the detection data of each detecting instrument; PC is connected with harvester, is recorded for the data that harvester is collected and analyzes.
9. Wharf Foundation Pile damage detection apparatus according to claim 8, it is characterised in that detecting instrument is acceleration transducer.
10. Wharf Foundation Pile damage detecting method, adopts Wharf Foundation Pile damage detection apparatus as claimed in claim 8 or 9 to detect, it is characterised in that to comprise the following steps:
Step 1, is placed on the fluting place of Wharf Foundation Pile damage check instrument arrangement apparatus under water by detecting instrument, and connecting line is by being connected with data acquisition unit behind internal through wires hole and external threads hole;
Step 2, measurement is restricted through external threads hole, reinforcing cord is fixing with weight after lacing hole to be connected, weight pull rope is connected with weight, Wharf Foundation Pile damage check instrument arrangement apparatus under water is enclosed within foundation pile, by fixed screw, the free end of Wharf Foundation Pile damage check instrument arrangement apparatus under water tentatively being fixed, now weight pull rope is in stress;
Step 3, by measuring rope, Wharf Foundation Pile damage check instrument arrangement apparatus under water is placed into position to be detected, now weight pull rope no longer stress, reinforcing cord is tightened up by weight under the effect of self gravitation, makes Wharf Foundation Pile damage check instrument arrangement apparatus under water be fixed on position to be detected;
Step 4, detection data are transmitted to data acquisition unit by detecting instrument by connecting line, PC is connected with harvester and data that harvester is collected are recorded and analyze, it is thus achieved that the mechanical admittance curves of position to be detected and Wharf Foundation Pile damage sensitive feature, thus drawing the degree of impairment of Wharf Foundation Pile.
CN201511009076.1A 2015-12-30 2015-12-30 The underwater arrangement apparatus of Wharf Foundation Pile damage check instrument, detection means and method Expired - Fee Related CN105651823B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107119730A (en) * 2017-05-05 2017-09-01 河海大学 Wharf Foundation Pile damage Dynamic testing sensor fastening device, detection means and method
CN107246035A (en) * 2017-07-19 2017-10-13 交通运输部公路科学研究所 A kind of main pier concrete pile foundation breakdown diagnosis method of bridge spanning the sea

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2197653Y (en) * 1994-01-11 1995-05-17 中国科学院武汉岩土力学研究所 Electric inductive stress sensor for measuring pile foundation
KR20030095918A (en) * 2002-06-15 2003-12-24 이동복 Sound absorption rate measuring device for underwater sound absorbing material with sensor calibration function
CN101851915A (en) * 2010-06-13 2010-10-06 万凌志 Force measurement pipe pile
CN201925606U (en) * 2011-01-26 2011-08-10 张家港迪克通信设备有限公司 Anchor ear
CN102220768A (en) * 2010-04-19 2011-10-19 广东省建筑科学研究院 Method for detecting integrity of concrete foundation pile body
CN102313778A (en) * 2011-07-27 2012-01-11 北京市康科瑞工程检测技术有限责任公司 Apparatus for detecting integrity of foundation pile by using acoustic transmission method and detection method used therein
CN103091359A (en) * 2013-01-09 2013-05-08 湖北工业大学 System for detecting integrity of grouting pile foundations based on distributed optical fiber temperature sensing technology

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2197653Y (en) * 1994-01-11 1995-05-17 中国科学院武汉岩土力学研究所 Electric inductive stress sensor for measuring pile foundation
KR20030095918A (en) * 2002-06-15 2003-12-24 이동복 Sound absorption rate measuring device for underwater sound absorbing material with sensor calibration function
CN102220768A (en) * 2010-04-19 2011-10-19 广东省建筑科学研究院 Method for detecting integrity of concrete foundation pile body
CN101851915A (en) * 2010-06-13 2010-10-06 万凌志 Force measurement pipe pile
CN201925606U (en) * 2011-01-26 2011-08-10 张家港迪克通信设备有限公司 Anchor ear
CN102313778A (en) * 2011-07-27 2012-01-11 北京市康科瑞工程检测技术有限责任公司 Apparatus for detecting integrity of foundation pile by using acoustic transmission method and detection method used therein
CN103091359A (en) * 2013-01-09 2013-05-08 湖北工业大学 System for detecting integrity of grouting pile foundations based on distributed optical fiber temperature sensing technology

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107119730A (en) * 2017-05-05 2017-09-01 河海大学 Wharf Foundation Pile damage Dynamic testing sensor fastening device, detection means and method
CN107119730B (en) * 2017-05-05 2019-05-10 河海大学 Wharf Foundation Pile damages Dynamic testing sensor fastening device, detection device and method
CN107246035A (en) * 2017-07-19 2017-10-13 交通运输部公路科学研究所 A kind of main pier concrete pile foundation breakdown diagnosis method of bridge spanning the sea

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