CN105507226A - Method for eliminating impacts of dowel bar bending on accuracy of spiral plate load test and displacement detector used in same - Google Patents
Method for eliminating impacts of dowel bar bending on accuracy of spiral plate load test and displacement detector used in same Download PDFInfo
- Publication number
- CN105507226A CN105507226A CN201610061487.3A CN201610061487A CN105507226A CN 105507226 A CN105507226 A CN 105507226A CN 201610061487 A CN201610061487 A CN 201610061487A CN 105507226 A CN105507226 A CN 105507226A
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- transmission shaft
- force transmission
- hollow
- dowel bar
- hollow force
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Soil Sciences (AREA)
- Analytical Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention provides a method for eliminating the impacts of dowel bar bending on the accuracy of the spiral plate load test and a displacement detector used in the same. The method and the displacement detector have the beneficial effects and advantages that the problem that the accuracy of the spiral plate load test is impacted by dowel bar bending can be completely eliminated by arranging the displacement detector for detecting the sinking displacement of a spiral bearing plate underground, namely the bottom end of a hollow dowel bar; a linear capacitive grating displacement transducer is adopted for displacement detection; moving and static grating polar plates of the linear capacitive grating displacement transducer are respectively arranged on a hollow force transfer shaft and a drive joint of the displacement detector; during measurement, the position of the drive joint is fixed, that is, the static grating polar plate is fixed, and the moving grating polar plate moves with loading of the hollow dowel bar, thus the displacement of the spiral bearing plate can be accurately detected; a drilling machine is adopted as a rotary pressure device acting on a casing pipe; an oil jack is adopted as a loading device of the hollow dowel bar; the method has the characteristics of mature operation method and extensive adaptability.
Description
Technical field
The invention belongs to screw plate test method, especially relate to a kind of method and the displacement detector thereof of getting rid of dowel bar Bending Influence screw plate test accuracy.
Background technology
Screw plate test is applicable to the Geotechnical Parameter such as bearing capacity, modulus of deformation measuring deep ground earth or the following foundation soil of water level, for the design such as pile foundation, foundation ditch provides foundation.
Screw plate test by dowel bar to spirality bearing plate load application, observation the sinking displacement of plate after foundation soil body pressurized under data board, thus obtain the load-sinking displacement-time curve of foundation soil, and then obtain the design parameters such as bearing capacity, modulus of deformation of different depth foundation soil.
Existing screw plate test equipment comprises load cell and displacement measuring device, and spiral plate is plugged in load cell bottom interface by square tenon, and interface and square tenon are worn by iron wire and connected.Displacement measuring device is arranged on ground, by be fixed on dowel bar sedimentation legs, formed by the datum line beam of earth anchorage in earth's surface, Magnetic gauge stand and dynamo-electric dial gage, the gauge head of dynamo-electric dial gage is contacted with sedimentation legs by connecting rod.
Obviously, the displacement measuring device of existing screw plate test equipment can not be got rid of dowel bar bend by pressure and is out of shape the displacement measurement error produced.
In order to avoid the error that the distortion of dowel bar bend by pressure produces spirality bearing plate sinking displacement amount, the utility model ' a kind of screw plate test equipment ' of notification number CN202595720U discloses following technical scheme: it comprises sleeve pipe, dowel bar, spirality bearing plate, load cell and multiple annular guide strip be socketed in along dowel bar short transverse spaced reciprocally on dowel bar; The internal diameter of multiple annular guide strip all matches with the external diameter of dowel bar; Multiple annular guide strip is also arranged in sleeve pipe, and the external diameter of each annular guide strip all matches with the internal diameter of sleeve pipe.
Summary of the invention
The present invention is the technical problem that the displacement measuring device in order to solve existing screw plate test equipment can not get rid of that the distortion of dowel bar bend by pressure produces displacement measurement error, and discloses a kind of method and the displacement detector thereof of getting rid of dowel bar Bending Influence screw plate test accuracy.
The method of eliminating dowel bar Bending Influence screw plate test accuracy of the present invention: the bottom that sleeve pipe connects combination connects the displacement detector with its synchronous rotary, hollow force transmission shaft with its synchronous rotary is set in displacement detector housing, move up and down in the spacing scope of hollow force transmission shaft in displacement detector housing, the moving grid pole plate of linear pattern capacitive displacement transducer is fixed on hollow force transmission shaft surface, fixed grid pole plate is fixed on displacement detector inner walls, moving grid pole plate is corresponding with moving grid pole plate, displacement detector is arranged provides to hollow force transmission shaft the flexible member giving pressure, hollow dowel bar connects combination and is connected with hollow force transmission shaft upper end, hollow force transmission shaft lower end is connected with load pressure detector, screw pressure-bearing plate and the bottom socket connection of load pressure detector, become resultant signal cable after linear pattern capacitive displacement transducer moving grid plate signal cable and load pressure detector signal cable gather and cause ground by hollow force transmission shaft and hollow dowel bar, sleeve rotating injection is made by rig, the sleeve rotating injection amount of a week equals the pitch of screw pressure-bearing plate, when screw pressure-bearing plate arrive give establish subterranean depth after to stop the rotation injection, remove rig, arrange and be supported in ground and by the datum line beam with casing spider of earth anchorage, casing spider, by fastening for second section sleeve pipe, removes first segment sleeve pipe, the reaction frame that corresponding hollow dowel bar connects combination is set, resultant signal cable is connected to measurement data record instrument, by reaction frame to be connected with hollow dowel bar the hydraulic jack between combining to hollow dowel bar by the relatively stable method of sedimentation or etc. the code requirement stage loading of sedimentation rate method until off-test, if carry out the test of next test degree of depth in this test hole position, dismounting reaction frame crossbeam and hydraulic jack, resultant signal cable is separated with measurement data record instrument, the second section sleeve pipe that casing spider is fastening connects first segment sleeve pipe, unclamp casing spider, make sleeve pipe connect combination by rig rotate injection and increase hollow dowel bar and sleeve pipe section by section, resultant signal cable is drawn from the hollow dowel bar increased simultaneously, when screw pressure-bearing plate arrive next give establish subterranean depth after to stop the rotation injection, repeating aforementioned identical process carries out testing until the test that the degree of depth is respectively tested in this test hole position all terminates, pull out sleeve pipe by rig or oil jack jack-up and connect combination, hollow dowel bar connection combination, displacement detector and load pressure detector also rise thereupon and pull out, and screw pressure-bearing plate abandons in test hole position.
Displacement detector for said method of the present invention: described displacement detector is provided with by casing joint, drive joint and end socket be from top to bottom threaded successively form housing, casing joint is provided with the external screw thread of screw joint casing, the hollow force transmission shaft of this housing through is provided with in housing, hollow force transmission shaft and casing joint and end socket slip joint, spline joint between hollow force transmission shaft and drive joint, hollow force transmission shaft has the protuberance that external splines is formed, casing joint lower end is provided with hollow force transmission shaft upper limit boss, this upper limit boss engages with the upper surface above moving hollow force transmission shaft protuberance, end socket is provided with hollow force transmission shaft lower limit boss, this lower limit boss engages with the lower surface moving down hollow force transmission shaft protuberance, hollow force transmission shaft is socketed with stage clip, stage clip bottom is supported in the upper surface of hollow force transmission shaft protuberance, stage clip upper end engages with the concave station of casing joint, hollow force transmission shaft upper end is provided with the nipple be connected with hollow dowel bar, hollow force transmission shaft lower end is provided with the nipple be threaded with load pressure detector, between hollow force transmission shaft and drive joint, the both sides of spline connection one correspondence position are respectively equipped with relative to hollow force transmission shaft is axial platform, interval is provided with between the platform of both sides, the moving grid pole plate of linear pattern capacitive displacement transducer is fixed on hollow force transmission shaft protuberance side platform, fixed grid pole plate is fixed on and drive joint side platform, hollow force transmission shaft protuberance side platform is provided with the via hole being communicated with hollow force transmission shaft axle center hole, moving grid plate signal cable is provided with in via hole, this cable is connected to the circuit board be fixed in hollow force transmission shaft axle center hole, the output line cable of circuit board and load pressure detector signal cable are connected to the cable receptacles of hollow force transmission shaft upper end, the described casing joint be threaded successively, drive joint, each joint portion between end socket is respectively equipped with sealing ring, hollow force transmission shaft and be respectively equipped with sealing ring between corresponding casing joint and end socket, hollow force transmission shaft upper end is provided with the sealing ring being engaged in hollow dowel bar port.
Displacement detector of the present invention can also take following technical measures:
Described casing joint upper end and end socket lower end are provided with the dust ring being engaged in hollow force transmission shaft.
Described hollow dowel bar and sleeve pipe are geological prospecting feeler lever and sleeve pipe.
The nipple that described hollow force transmission shaft upper end connects hollow dowel bar is stud, and the nipple that hollow force transmission shaft lower end connects load pressure detector is swivel nut.
Beneficial effect of the present invention and advantage are:
The displacement detector detecting screw pressure-bearing plate sinking displacement amount is arranged at underground in the present invention and hollow dowel bar connects the lowermost end combined, and therefore can get rid of the problem of dowel bar Bending Influence screw plate test accuracy completely.Dynamic, the fixed grid pole plate of linear pattern capacitive displacement transducer are separately positioned on hollow force transmission shaft and drive joint by the present invention, dynamic, the fixed grid pole plate of linear pattern capacitive displacement transducer are separately positioned on a correspondence position of hollow force transmission shaft and drive joint by displacement detector, during test, the housing comprising drive joint of displacement detector is fixed with sleeve pipe, hollow force transmission shaft moves with hollow dowel bar loading, therefore, it is possible to the sinking displacement amount of Measurement accuracy screw pressure-bearing plate.Spline joint between hollow force transmission shaft of the present invention and drive joint, can realize sleeve rotating injection and drive the injection of hollow dowel bar synchronous rotary, and can ensure linear pattern capacitive displacement transducer dynamic, fixed grid pole plate correspondence position relation is constant.The rotary presser device that the present invention acts on sleeve pipe adopts rig, and the loading system of hollow dowel bar adopts hydraulic jack, has method of operating maturation, compliance feature widely.
Accompanying drawing explanation
Accompanying drawing 1 is application the inventive method embodiment schematic diagram.
Accompanying drawing 2 is displacement detector, load pressure detector and screw pressure-bearing plate connection diagram.
Accompanying drawing 3 is displacement detector arrangement section enlarged diagrams in Fig. 2.
Accompanying drawing 4 is Fig. 3 A-A section zoomed-in views.
Mark in figure: 1 hollow dowel bar connects combination, and 2 sleeve pipes connect combination, 3 reaction frames, 3-1 reaction frame crossbeam, 4 datum line beams, 4-1 casing spider, 5 hydraulic jacks, 6 casing joints, 6-1 upper limit boss, 6-2 concave station, 7 drive joints, 8 end sockets, 9 hollow force transmission shafts, 9-1 stud, 9-2 swivel nut, 9-3 via hole, 10 load pressure detectors, 11 screw pressure-bearing plates, 12 resultant signal cables, 13 signal accessory power outlets, 14 fixed grid pole plates, 14-1 backing plate, 15 moving grid pole plates, 16 circuit boards, 17 dust rings, 18 sealing rings, 19 stage clips.
Detailed description of the invention
The present invention is further illustrated below in conjunction with embodiment and accompanying drawing thereof.
As shown in Figure 1,2,3, 4, the bottom connecting combination 2 at sleeve pipe connects the displacement detector with its synchronous rotary, displacement detector is from top to bottom threaded successively by casing joint 6, drive joint 7 and end socket 8 and forms housing, and sleeve pipe is threaded with casing joint 6.The hollow force transmission shaft 9 of this housing through is provided with in the housing of displacement detector, hollow force transmission shaft 9 and casing joint 6 and end socket 8 slip joint, be spline joint between hollow force transmission shaft 9 and drive joint 7, make hollow force transmission shaft 9 by the housing of displacement detector and sleeve pipe synchronous rotary.Hollow force transmission shaft 9 has the protuberance that external splines is formed, casing joint 6 lower end is provided with the upper limit boss 6-1 of hollow force transmission shaft 9, this upper limit boss engages with the upper surface of hollow force transmission shaft 9 protuberance of raised state, end socket 8 is provided with the lower limit boss of hollow force transmission shaft, this lower limit boss engages with the lower surface moving down hollow force transmission shaft protuberance, upper and lower positive stop lug boss match with hollow force transmission shaft 9 protuberance make hollow force transmission shaft in displacement detector housing spacing scope in move up and down.
Hollow force transmission shaft 9 upper end is provided with and is connected the nipple and stud 9-1 that combination 1 connects with hollow dowel bar, hollow force transmission shaft 9 lower end is provided with the lower nipple and swivel nut 9-2 that are threaded with load pressure detector 10, and the bottom of load pressure detector 10 is provided with the screw pressure-bearing plate 11 engaged with its grafting.
Between hollow force transmission shaft 9 and drive joint 7, the both sides of a correspondence position of spline connection are respectively equipped with relative to hollow force transmission shaft is axial platform, interval is provided with between the platform of both sides, the moving grid pole plate 15 of linear pattern capacitive displacement transducer is fixed on hollow force transmission shaft protuberance side platform, fixed grid pole plate 14 is fixed on drive joint side platform, and this platform is consisted of the backing plate 14-1 shown in Fig. 4.Hollow force transmission shaft 9 protuberance side platform is provided with the via hole 9-3 being communicated with hollow force transmission shaft 9 axle center hole, moving grid pole plate 15 signal cable is provided with in via hole 9-3, this cable is connected to the circuit board 16 be fixed in hollow force transmission shaft axle center hole, and the output line cable of circuit board 16 is connected to the signal accessory power outlet 13 being fixed on hollow force transmission shaft 9 upper end.
Simultaneously, the signal cable of load pressure detector 10 is also connected to the signal accessory power outlet 13 of hollow force transmission shaft upper end, the plug of resultant signal cable 12 and signal accessory power outlet 13 socket connection, its resultant signal cable 12 causes ground from hollow dowel bar connection combination 1, is connected to measurement data record instrument during test.
Hollow force transmission shaft 9 is socketed with the flexible member and stage clip 19 that absorb vibration and impact energy, and stage clip bottom is supported in the upper surface of hollow force transmission shaft protuberance, and stage clip upper end engages with the concave station 6-2 of casing joint 6.
As shown in Figure 3, casing joint 6, joint portion between drive joint 7 and end socket 8 are provided with sealing ring 18, and hollow dowel bar connects between combination 1 and hollow force transmission shaft 9, hollow force transmission shaft 9 and be also respectively equipped with sealing ring 18 between corresponding casing joint 6 and end socket 8.
Casing joint 6 upper end and end socket 8 lower end are provided with the dust ring 17 being engaged in hollow force transmission shaft 9.
Hollow dowel bar connection combination 1 described in embodiment is connected combination 2 with sleeve pipe be geological prospecting feeler lever and sleeve pipe.
Load pressure detector 10 involved in the present invention is existing product.
Of the present invention is rig to sleeve pipe connection combination rotary presser device, and the loading system hollow dowel bar being connected to combination is hydraulic jack.
For rig, operating procedure of the present invention is described below in conjunction with Fig. 1:
1. pass through drill hole of drilling machine in setting hole position, stop boring apart from test hole depth 1 meter of;
2. screw pressure-bearing plate 11, load pressure probe 10, displacement detecting probe are connected successively with hollow dowel bar, resultant signal cable 12 is drawn from hollow dowel bar;
3. outside hollow dowel bar, overlap tubing, this sleeve pipe is connected with the casing joint 6 of displacement detector, and this sleeve pipe is connected to rig;
4. start rig by position, sleeve rotating penetration test hole, the sleeve rotating injection amount of a week equals the pitch of screw pressure-bearing plate 11.Increase hollow dowel bar and sleeve pipe subsequently section by section to make it to become respectively hollow dowel bar and be connected combination 1 and be connected combination 2 with sleeve pipe, and resultant signal cable 12 is drawn from each hollow dowel bar increased;
5. stop when screw pressure-bearing plate 11 arrives set depth to bore, remove rig, arrange and be supported in ground and by the datum line beam 4 with casing spider 4-1 of earth anchorage, casing spider 4-1 is by fastening for second section sleeve pipe, remove first segment sleeve pipe, the reaction frame 3 that corresponding hollow dowel bar connects combination is set, resultant signal cable is connected to measurement data record instrument;
6. by reaction frame 3 be connected with hollow dowel bar hydraulic jack 5 between combination 1 to hollow dowel bar by the relatively stable method of sedimentation or etc. the code requirement stage loading of sedimentation rate method until off-test;
If 7. carry out the test of next test degree of depth in this test hole position, dismounting reaction frame crossbeam 3-1 and hydraulic jack 5, resultant signal cable 12 is separated with measurement data record instrument, the second section sleeve pipe that casing spider 4-1 is fastening connects first segment sleeve pipe, unclamp casing spider 4-1, make sleeve pipe connect combination by rig rotate injection and increase hollow dowel bar and sleeve pipe section by section, resultant signal cable 12 is drawn from the hollow dowel bar increased simultaneously, when screw pressure-bearing plate 11 arrive next give establish subterranean depth after to stop the rotation injection, repeat abovementioned steps 5, 6 processes carry out testing until the test that the degree of depth is respectively tested in this test hole position all terminates,
8. pull out sleeve pipe by rig or oil jack jack-up and connect combination, namely hollow dowel bar connection combination, displacement detector and load pressure detector rise thereupon pull out, and screw pressure-bearing plate 11 abandons in test hole position.
Claims (5)
1. get rid of the method for dowel bar Bending Influence screw plate test accuracy, it is characterized in that: the bottom that sleeve pipe connects combination connects the displacement detector with its synchronous rotary, hollow force transmission shaft with its synchronous rotary is set in displacement detector housing, move up and down in the spacing scope of hollow force transmission shaft in displacement detector housing, the moving grid pole plate of linear pattern capacitive displacement transducer is fixed on hollow force transmission shaft surface, fixed grid pole plate is fixed on displacement detector inner walls, moving grid pole plate is corresponding with moving grid pole plate, displacement detector is arranged provides to hollow force transmission shaft the flexible member giving pressure, hollow dowel bar connects combination and is connected with hollow force transmission shaft upper end, hollow force transmission shaft lower end is connected with load pressure detector, screw pressure-bearing plate and the bottom socket connection of load pressure detector, become resultant signal cable after linear pattern capacitive displacement transducer moving grid plate signal cable and load pressure detector signal cable gather and cause ground by hollow force transmission shaft and hollow dowel bar, sleeve rotating injection is made by rig, the sleeve rotating injection amount of a week equals the pitch of screw pressure-bearing plate, when screw pressure-bearing plate arrive give establish subterranean depth after to stop the rotation injection, remove rig, arrange and be supported in ground and by the datum line beam with casing spider of earth anchorage, casing spider, by fastening for second section sleeve pipe, removes first segment sleeve pipe, the reaction frame that corresponding hollow dowel bar connects combination is set, resultant signal cable is connected to measurement data record instrument, by reaction frame to be connected with hollow dowel bar the hydraulic jack between combining to hollow dowel bar by the relatively stable method of sedimentation or etc. the code requirement stage loading of sedimentation rate method until off-test, if carry out the test of next test degree of depth in this test hole position, dismounting reaction frame crossbeam and hydraulic jack, resultant signal cable is separated with measurement data record instrument, the second section sleeve pipe that casing spider is fastening connects first segment sleeve pipe, unclamp casing spider, make sleeve pipe connect combination by rig rotate injection and increase hollow dowel bar and sleeve pipe section by section, resultant signal cable is drawn from the hollow dowel bar increased simultaneously, when screw pressure-bearing plate arrive next give establish subterranean depth after to stop the rotation injection, repeating aforementioned identical process carries out testing until the test that the degree of depth is respectively tested in this test hole position all terminates, pull out sleeve pipe by rig or oil jack jack-up and connect combination, hollow dowel bar connection combination, displacement detector and load pressure detector also rise thereupon and pull out, and screw pressure-bearing plate abandons in test hole position.
2. the displacement detector of method according to claim 1, it is characterized in that: described displacement detector is provided with by casing joint, drive joint and end socket be from top to bottom threaded successively form housing, casing joint is provided with the external screw thread of screw joint casing, the hollow force transmission shaft of this housing through is provided with in housing, hollow force transmission shaft and casing joint and end socket slip joint, spline joint between hollow force transmission shaft and drive joint, hollow force transmission shaft has the protuberance that external splines is formed, casing joint lower end is provided with hollow force transmission shaft upper limit boss, this upper limit boss engages with the upper surface above moving hollow force transmission shaft protuberance, end socket is provided with hollow force transmission shaft lower limit boss, this lower limit boss engages with the lower surface moving down hollow force transmission shaft protuberance, hollow force transmission shaft is socketed with stage clip, stage clip bottom is supported in the upper surface of hollow force transmission shaft protuberance, stage clip upper end engages with the concave station of casing joint, hollow force transmission shaft upper end is provided with the nipple be connected with hollow dowel bar, hollow force transmission shaft lower end is provided with the nipple be threaded with load pressure detector, between hollow force transmission shaft and drive joint, the both sides of spline connection one correspondence position are respectively equipped with relative to hollow force transmission shaft is axial platform, interval is provided with between the platform of both sides, the moving grid pole plate of linear pattern capacitive displacement transducer is fixed on hollow force transmission shaft protuberance side platform, fixed grid pole plate is fixed on and drive joint side platform, hollow force transmission shaft protuberance side platform is provided with the via hole being communicated with hollow force transmission shaft axle center hole, moving grid plate signal cable is provided with in via hole, this cable is connected to the circuit board be fixed in hollow force transmission shaft axle center hole, the output line cable of circuit board and load pressure detector signal cable are connected to the cable receptacles of hollow force transmission shaft upper end, the described casing joint be threaded successively, drive joint, each joint portion between end socket is respectively equipped with sealing ring, hollow force transmission shaft and be respectively equipped with sealing ring between corresponding casing joint and end socket, hollow force transmission shaft upper end is provided with the sealing ring being engaged in hollow dowel bar port.
3. displacement detector according to claim 2, is characterized in that: described casing joint upper end and end socket lower end are provided with the dust ring being engaged in hollow force transmission shaft.
4. displacement detector according to claim 2, is characterized in that: described hollow dowel bar and sleeve pipe are geological prospecting feeler lever and sleeve pipe.
5. displacement detector according to claim 2, is characterized in that: the nipple that described hollow force transmission shaft upper end connects hollow dowel bar is stud, and the nipple that hollow force transmission shaft lower end connects load pressure detector is swivel nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610061487.3A CN105507226B (en) | 2016-01-28 | 2016-01-28 | Exclude the method and its displacement detector of transmission rod Bending Influence screw plate loading test accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610061487.3A CN105507226B (en) | 2016-01-28 | 2016-01-28 | Exclude the method and its displacement detector of transmission rod Bending Influence screw plate loading test accuracy |
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| CN105507226A true CN105507226A (en) | 2016-04-20 |
| CN105507226B CN105507226B (en) | 2017-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610061487.3A Active CN105507226B (en) | 2016-01-28 | 2016-01-28 | Exclude the method and its displacement detector of transmission rod Bending Influence screw plate loading test accuracy |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375395A (en) * | 2018-03-22 | 2018-08-07 | 中国铁路设计集团有限公司 | The underground acquisition component of power and speed signal in standard penetration test (SPT) |
| CN109440753A (en) * | 2018-12-04 | 2019-03-08 | 中国海洋大学 | A kind of helical plate load load testing device excluding transmission rod Bending Influence |
| CN110700787A (en) * | 2018-07-10 | 2020-01-17 | 中国石油化工股份有限公司 | Wellhead torque slow-release back-off protection device and method and special torsion-proof rod |
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| CN202323914U (en) * | 2011-11-08 | 2012-07-11 | 中交天航港湾建设工程有限公司 | Center fixed type sedimentation plate |
| CN202595720U (en) * | 2012-06-08 | 2012-12-12 | 深圳市勘察测绘院有限公司 | Spiral board load testing equipment |
| CN103195042A (en) * | 2013-03-15 | 2013-07-10 | 安徽省交通投资集团有限责任公司 | Deeply-loadable spiral plate load test device and method thereof |
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| JP2007255012A (en) * | 2006-03-22 | 2007-10-04 | Giotech Gijutsushi Jimusho:Kk | Vane shear testing device of ground in situ |
| JP2010189944A (en) * | 2009-02-19 | 2010-09-02 | Penta Ocean Construction Co Ltd | Portable cone penetration test device |
| CN202323914U (en) * | 2011-11-08 | 2012-07-11 | 中交天航港湾建设工程有限公司 | Center fixed type sedimentation plate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375395A (en) * | 2018-03-22 | 2018-08-07 | 中国铁路设计集团有限公司 | The underground acquisition component of power and speed signal in standard penetration test (SPT) |
| CN108375395B (en) * | 2018-03-22 | 2024-04-19 | 中国铁路设计集团有限公司 | Underground acquisition assembly for force and speed signals in standard penetration test |
| CN110700787A (en) * | 2018-07-10 | 2020-01-17 | 中国石油化工股份有限公司 | Wellhead torque slow-release back-off protection device and method and special torsion-proof rod |
| CN110700787B (en) * | 2018-07-10 | 2021-05-28 | 中国石油化工股份有限公司 | Wellhead torque slow-release back-off protection device and method and special torsion-proof rod |
| CN109440753A (en) * | 2018-12-04 | 2019-03-08 | 中国海洋大学 | A kind of helical plate load load testing device excluding transmission rod Bending Influence |
| CN109440753B (en) * | 2018-12-04 | 2023-11-21 | 中国海洋大学 | Spiral plate load testing device capable of eliminating bending influence of dowel bar |
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| CN105507226B (en) | 2017-07-28 |
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Effective date of registration: 20190419 Address after: No. 88 Manjiang Road, Yueyahe Street, Hebei District, Tianjin 300251 Patentee after: TieSanyuan (Tianjin) Engineering Co., Ltd. Address before: No. 10 Minjiang Road, Minquan, Hebei District, Tianjin Patentee before: China Railway Third Survey and Design Institute Group Ltd. |