CN105699195A - Screw plate deep load test system based on geotechnical engineering in-situ rotating touch detector and use method thereof - Google Patents
Screw plate deep load test system based on geotechnical engineering in-situ rotating touch detector and use method thereof Download PDFInfo
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- CN105699195A CN105699195A CN201610058217.7A CN201610058217A CN105699195A CN 105699195 A CN105699195 A CN 105699195A CN 201610058217 A CN201610058217 A CN 201610058217A CN 105699195 A CN105699195 A CN 105699195A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0284—Bulk material, e.g. powders
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Abstract
The invention relates to a screw plate deep load test system based on a geotechnical engineering in-situ rotating touch detector and a use method thereof. The test system is composed of a detector assembly and a spiral bearing plate, wherein the detector assembly is composed of a rotating touch detector, a measuring data recorder, a displacement detector and a load pressure detector. According to the system, the displacement detector is arranged at the bottom end of a hollow dowel bar, so that the influence of the bending of the dowel bar on the test accuracy can be fully eliminated; the system utilizes the current geotechnical engineering in-situ rotating touch detector to perform screw plate deep load test; a reacting force device and a hydraulic device can enable the test depth to be 30m or above; the test can be performed without drilling hole; according to the system, the moveable and fixed grid plates of a linear grid-holding displacement sensor are respectively arranged on a hollow force transferring shaft and a driving joint of the displacement detector; in the test process, the shell containing the driving joint of the displacement detector is fixed along with a sleeve and the hollow force transferring shaft is moved along with the hollow dowel bar under the loading, so that the sinking displacement of the spiral bearing plate can be accurately measured.
Description
Technical field
The invention belongs to screw plate loading test system, especially relate to a kind of spiral lamina Deep Plate Load Test system based on geotechnical engineering original position rotation contact-surveying vehicle and using method thereof。
Background technology
Screw plate loading test is applicable to measure the Geotechnical Parameter such as deep ground earth or the bearing capacity of the following foundation soil of water level, deformation modulus, provides foundation for the design such as pile foundation, foundation ditch。
Existing screw plate loading test equipment is that spiral type bearing plate is screwed in the desired depth of below ground by employing manpower or windlass, it is further applied load to spiral type bearing plate by dowel steel, the sinking displacement of foundation soil body pressurized back plate under observation data board, thus obtaining the load-sinking displacement-time curve of foundation soil, and then obtain the design parameters such as the bearing capacity of different depth foundation soil, deformation modulus。
Current deep basal pit depth capacity is more than 30m, and existing screw plate loading test equipment is by the restriction of manpower, windlass or counterforce device, and the degree of depth is only capable of reaching about 12m, so existing screw plate loading test equipment has not adapted to the requirement of deep basal pit test。And existing screw plate loading test test accuracy there is also defect, namely test result can not get rid of the error that the bend by pressure of dowel steel own produces。
Authorization Notice No. CN101126754 disclosed a kind of ' geotechnical engineering original position rotation contact-surveying vehicle ', by static sounding vehicle car body, earth anchor and oil motor thereof, it is symmetrically distributed in four set hydraulic legs of automobile chassis bottom surface, automobile engine, the oil pump that automobile engine drives, it is fixed on the bearing soleplate of automobile chassis, it is arranged on the hydraulic means on bearing soleplate, it is connected to the feeler lever dismounting cutting ferrule promoted for feeler lever of hydraulic means, it is supported in the feeler lever guide-localization circle of bearing soleplate, equipped with controlling each hydraulic leg lift controil valve respectively, the rotating forward of earth anchor oil motor, stop, reversion controls valve, hydraulic means work is entered, work is moved back the control station controlling valve and is formed, the hydraulic means being wherein arranged on bearing soleplate is made up of two hydraulic jacks arranged side by side and piston rod thereof, piston rod supports and is fixed on bearing soleplate, synchronizing to be provided with between two hydraulic jacks arranged side by side moved up and down and synchronize lifting and transmit the main spindle box of injection pressure, main spindle box is provided with bearings, its axis is parallel to the main shaft of hydraulic jack axis, main spindle box supports main shaft oil motor and under drive gear case thereof, the output shaft of gear-box is in transmission connection in main shaft, main shaft lower end is provided with feeler lever dismounting cutting ferrule, this dismounting card is arranged with two square holes of corresponding feeler lever end symmetric draw-in groove, the centre of feeler lever dismounting cutting ferrule is affixed to the feeler lever nipple of main shaft lower end, and hydraulic means control station is additionally provided with corresponding main shaft oil motor respectively, feeler lever hydraulically operated fixture, slush pump oil motor, the air relief valve of two hydraulic jack hydraulic circuits arranged side by side, further respectively has main shaft oil motor and the rotating forward of vehicle-mounted slush pump oil motor, stop, reversion controls valve, the quick liter of two hydraulic jacks arranged side by side, control valve drops in fast prompt drop and floating, and feeler lever hydraulically operated fixture clamping and release control valve and feeler lever air-actuated jaw clamping and release control valve。
Above-mentioned geotechnical engineering original position rotation contact-surveying vehicle is respectively provided with rotation injection and two kinds of working methods of static(al) injection for feeler lever or sleeve pipe。
Below to ' geotechnical engineering original position rotation contact-surveying vehicle ' referred to as ' rotation touch investigating car '。
Summary of the invention
The present invention is to solve the above-mentioned technical problem that existing screw plate loading test equipment exists in MTD, test result accuracy, and discloses a kind of spiral lamina Deep Plate Load Test system based on geotechnical engineering original position rotation contact-surveying vehicle and using method thereof。
The spiral lamina Deep Plate Load Test system based on geotechnical engineering original position rotation contact-surveying vehicle of the present invention, including rotation touch investigating car, load pressure detector and screw pressure-bearing plate, described load pressure detector bottom is provided with the interface closed with screw pressure-bearing plate side joggle, it is characterized by, described rotation touch investigating car is provided with the hollow dowel steel and sleeve pipe that are connected to main shaft lower end feeler lever nipple, described sleeve pipe is provided with the adapter coupling being connected with feeler lever nipple, described hollow dowel steel and sleeve pipe are that geological prospecting feeler lever connects combination and telescopic joint combination, sleeve pipe is for rotating injection, hollow dowel steel is rotated injection by sleeve pipe, the sleeve rotating injection amount of a week is equal to the pitch of screw pressure-bearing plate, rotation touch investigating car during test its to be supported in the feeler lever guide-localization circle of bearing soleplate corresponding up and down with test hole position, test hole position arranges and is supported in ground and by the datum line beam of earth anchorage, datum line beam arranges casing spider, casing spider during test and corresponding sleeve pipe fluid-tight engagement；The bottom of sleeve pipe is connected to the detector assembly being made up of displacement detector and load pressure detector, described displacement detector is provided with by casing joint, the housing of drive joint and end socket threaded composition successively from top to bottom, casing joint is provided with the external screw thread being connected with casing threads, housing is provided with through the hollow force transmission shaft of this housing, hollow force transmission shaft is slidably engaged with casing joint and end socket, between hollow force transmission shaft and drive joint, spline is connected, hollow force transmission shaft has the protuberance that external splines is constituted, casing joint lower end is provided with hollow force transmission shaft upper limit boss, this upper limit boss engages with the upper surface of the hollow force transmission shaft protuberance of upper shifting, 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 being connected with hollow dowel steel, hollow force transmission shaft lower end is provided with the nipple threadeded with load pressure detector, between hollow force transmission shaft and drive joint, being respectively provided on two sides with relative to hollow force transmission shaft of spline connection one correspondence position is axial platform, it is provided with interval between the platform of both sides, the moving grid pole plate of linear type capacitive displacement transducer is fixed on hollow force transmission shaft protuberance side platform, fixed grid pole plate is fixed on drive joint side platform, hollow force transmission shaft protuberance side platform is communicated with the via of hollow force transmission shaft axle center hole, via is provided with moving grid plate signal cable, this cable is connected to the circuit board being 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, described casing joint threaded successively, drive joint, each joint portion between end socket is respectively equipped with sealing ring, it is respectively equipped with sealing ring between hollow force transmission shaft and corresponding casing joint and end socket, hollow force transmission shaft upper end is provided with the sealing ring being engaged in hollow dowel steel lower port, described rotation touch investigating car is provided with measurement data record instrument, its resultant signal cable of plug being connected to hollow force transmission shaft upper end cable receptacles is connected to measurement data record instrument。
Described casing joint upper end and end socket lower end are provided with the dust ring being engaged in hollow force transmission shaft。
It is stud that described hollow force transmission shaft upper end connects the nipple of hollow dowel steel, and it is swivel nut that hollow force transmission shaft lower end connects the nipple of load pressure detector。
Spiral lamina its using method of Deep Plate Load Test system based on geotechnical engineering original position rotation contact-surveying vehicle of the present invention comprises the following steps:
(1) rotation touch investigating car arrives test site so that it is feeler lever guide-localization circle aligns test hole position, pulls out supporting leg, leveling chassis of vehicle body plane, starts earth anchor oil motor, screws in earth anchor；
(2) in test hole position, setting is supported in ground and by the datum line beam with casing spider of earth anchorage；
(3) cable receptacles of the detector assembly upper end constituted with load pressure detector and displacement detector by the plug of resultant signal cable is connected, hollow dowel steel and sleeve pipe are connected to detector assembly and are drawn from hollow dowel steel by resultant signal cable simultaneously, detector assembly is placed in rotation touch investigating car underbody portion by rotation touch investigating car feeler lever guide-localization circle, screw pressure-bearing plate is plugged in detector assembly bottom interface and is worn even by iron wire, sleeve upper end is connected to by adapter coupling the feeler lever nipple of rotation touch investigating car hydraulic means main shaft lower end；
(4) start rotation touch investigating car hydraulic means and make screw pressure-bearing plate rotate injection in test hole position by sleeve pipe, detector assembly, the sleeve rotating injection amount of a week, equal to the pitch of screw pressure-bearing plate, increases sleeve pipe and hollow dowel steel section by section and is drawn from the hollow dowel steel increased by resultant signal cable simultaneously；
(5) after the arrival of screw pressure-bearing plate is given and set subterranean depth, stop sleeve rotating injection, by the casing spider of datum line beam, sleeve pipe is gripped, adapter coupling is removed from the feeler lever nipple of main shaft lower end, adjusts rotation touch investigating car hydraulic means main shaft height and make feeler lever nipple be connected with hollow dowel steel；
(6) resultant signal cable is connected to measurement data record instrument, the main shaft of rotation touch investigating car hydraulic means to hollow dowel steel by settle relative stabilization method or etc. the code requirement stage loading of sedimentation rate method test；
(7) hollow dowel steel loading is stopped after having tested, the feeler lever nipple of hollow dowel steel upper end with rotation touch investigating car hydraulic means main shaft is separated and connects adapter coupling, adjusting rotation touch investigating lathe main shaft height makes adapter coupling with telescopic joint, release casing spider gripping sleeve pipe, risen by the main shaft of rotation touch investigating car hydraulic means and pull out sleeve pipe, hollow dowel steel and detector assembly rise therewith simultaneously and pull out, and screw pressure-bearing plate abandons in test hole。
If carrying out next degree of depth test in same test hole, first resultant signal cable is separated with measurement data record instrument, the feeler lever nipple of hollow dowel steel upper end with rotation touch investigating car hydraulic means main shaft is separated and connects adapter coupling, adjusting rotation touch investigating lathe main shaft height makes adapter coupling with telescopic joint, start rotation touch investigating car hydraulic means and pass through sleeve pipe, detector assembly makes screw pressure-bearing plate rotate injection in test hole position, increase sleeve pipe and hollow dowel steel section by section and resultant signal cable drawn from the hollow dowel steel increased simultaneously, when screw pressure-bearing plate arrives after next gives and set subterranean depth, stop sleeve rotating injection, abovementioned steps (5) is repeated after resultant signal cable is connected to measurement data record instrument, (6) carry out testing。
Beneficial effects of the present invention and advantage are in that:
1) displacement detector of detection screw pressure-bearing plate sinking displacement amount is arranged at underground and the lowermost end of hollow dowel steel by the present invention, the problem that therefore can get rid of dowel steel Bending Influence screw plate loading test accuracy completely。
2) present invention utilizes existing geotechnical engineering original position rotation contact-surveying vehicle to carry out screw plate loading test, the counterforce device of rotation touch investigating car, hydraulic means and datum line beam etc. can make the screw plate loading test degree of depth reach more than 30m, and need not test on the basis of boring。
3) dynamic, the fixed grid pole plate of linear type capacitive displacement transducer are separately positioned on hollow force transmission shaft and the drive joint of displacement detector by the present invention, during test, the housing including drive joint of displacement detector is fixed with sleeve pipe, hollow force transmission shaft moves with hollow dowel steel loading, therefore, it is possible to accurately measure the sinking displacement amount of screw pressure-bearing plate。
Accompanying drawing explanation
Accompanying drawing 1 is spiral lamina Deep Plate Load Test system structure schematic diagram。
Spiral lamina Deep Plate Load Test system structure schematic diagram when accompanying drawing 2 is trystate。
Accompanying drawing 3 is detector assembly and screw pressure-bearing board connecting structure schematic diagram。
Accompanying drawing 4 is displacement detector structural profile schematic diagram in Fig. 3。
Accompanying drawing 5 is Fig. 4 A-A zoomed-in view。
Labelling in figure: 1 screw pressure-bearing plate, 2 load pressure detectors, 3 displacement detectors, 3-1 casing joint, 3-2 drive joint, 3-2-1 upper limit boss, 3-3 end socket, the hollow force transmission shaft of 3-4, 3-4-1 stud, 3-4-2 swivel nut, 3-5 dust ring, 3-6 sealing ring, 3-7 stage clip, 3-8 fixed grid pole plate, 3-8-1 backing plate, 3-9 moving grid pole plate, 3-10 via, 4 hollow dowel steels, 5 sleeve pipes, 6 datum line beams, 7 casing spiders, 8 adapter couplings, 9 main spindle boxes, 10 hydraulic jacks arranged side by side, 11 pressure plares, 12 measurement data record instrument, 13 onboard control consoles, 14 rotation touch investigating cars, 15 hydraulic legs, 16 earth anchors, 17 feeler lever guide-localization circles, 18 feeler lever nipples, 19 cable receptacles, 20 circuit boards。
Detailed description of the invention
The present invention is further illustrated below in conjunction with embodiment and accompanying drawing thereof。
The spiral lamina Deep Plate Load Test system based on geotechnical engineering original position rotation contact-surveying vehicle as shown in Figure 1, 2, including rotation touch investigating car 14, is symmetrically distributed in the hydraulic leg 15 of chassis of vehicle body, earth anchor 16 and earth anchor oil motor thereof。Hydraulic system includes the vehicle oil pump that rotation touch investigating car engine drives, it is fixed on two hydraulic jacks 10 arranged side by side moved up and down by synchronization of chassis of vehicle body, it is fixed on two hydraulic jacks arranged side by side and synchronizes elevating movement and transmit the pressure plare 11 of injection pressure, it is supported in main spindle box 9 and the under drive gear case thereof of pressure plare, it is connected to the main shaft of under drive gear case output shaft, it is connected to feeler lever nipple 17 and the onboard control console 13 of main shaft lower end, rotation touch investigating chassis corresponding to feeler lever nipple 18 is provided with feeler lever guide-localization circle 17, rotation touch investigating car 14 is provided with the hollow dowel steel 4 and sleeve pipe 5 that are connected to main shaft lower end feeler lever nipple 18, its middle sleeve 5 is provided with the adapter coupling being connected with feeler lever nipple, hollow dowel steel 4 and sleeve pipe 5 are that geological prospecting feeler lever connects combination and telescopic joint combination, sleeve pipe is for rotating injection, hollow dowel steel is rotated injection by sleeve pipe, the sleeve rotating injection amount of a week is equal to the pitch of screw pressure-bearing plate 1。
Rotation touch investigating car 14 during test its to be supported in the feeler lever guide-localization circle 17 of bearing soleplate corresponding up and down with test hole position, test hole position arranges and is supported in ground and by the datum line beam 6 of earth anchorage, and datum line beam arranges casing spider 7。As in figure 2 it is shown, the casing spider 7 during test is fixed by sleeve pipe with corresponding sleeve pipe fluid-tight engagement。
As shown in Figure 1, 2, 3, the bottom of sleeve pipe 5 is connected to the detector assembly being made up of displacement detector 3 and load pressure detector 2, and load pressure detector 2 bottom is provided with the interface closed with screw pressure-bearing plate 1 side's joggle, and side's tenon is worn even by iron wire with interface。
As shown in Fig. 3,4,5, displacement detector 3 is provided with by casing joint 3-1, drive joint 3-2 and the end socket 3-3 threaded housing constituted successively from top to bottom, and casing joint 3-1 is provided with the external screw thread threadeded with sleeve pipe 5。Housing is provided with through the hollow force transmission shaft 3-4 of this housing, hollow force transmission shaft and casing joint 3-1 and end socket 3-3 are slidably engaged, between hollow force transmission shaft 3-4 and drive joint 3-1, spline is connected, hollow force transmission shaft has the protuberance that external splines is constituted, casing joint lower end is provided with hollow force transmission shaft upper limit boss 3-1-1, this upper limit boss engages with the upper surface of the hollow force transmission shaft protuberance of upper shifting, end socket 3-3 is provided with the lower limit boss of hollow force transmission shaft 3-4, and 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 3-7, 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 of casing joint 3-1。Hollow force transmission shaft upper end is provided with the nipple and stud 3-4-1 that are connected with hollow dowel steel 4, and hollow force transmission shaft lower end is provided with the nipple and swivel nut 3-4-2 threadeded with load pressure detector 2。
Between hollow force transmission shaft 3-4 and drive joint 3-2, being respectively provided on two sides with relative to hollow force transmission shaft of spline connection one correspondence position is axial platform, it is provided with interval between the platform of both sides, the moving grid pole plate 3-9 of linear type capacitive displacement transducer is fixed on hollow force transmission shaft protuberance side platform, fixed grid pole plate 3-8 is fixed on drive joint side platform, and this platform is made up of backing plate 3-8-1。
Hollow force transmission shaft protuberance side platform is communicated with the via 3-10 of hollow force transmission shaft axle center hole, via is provided with moving grid plate signal cable, this cable is connected to the circuit board 20 being fixed in hollow force transmission shaft axle center hole, the output line cable of circuit board and load pressure detector 2 signal cable are connected to the cable receptacles 19 of hollow force transmission shaft upper end, and its resultant signal cable of plug connecting this socket is connected to the measurement data record instrument 12 of rotation touch investigating car 14。Owing to load pressure detector 2 signal cable is connected to the cable receptacles 19 of hollow force transmission shaft upper end, therefore load pressure detector 2 and displacement detector 3 constitute the detector assembly connected as one。
Casing joint 3-1 threaded successively, each joint portion between drive joint 3-2, end socket 3-3 are respectively equipped with sealing ring 3-6, also sealing ring 3-6 it is respectively equipped with between hollow force transmission shaft 3-4 and corresponding casing joint and end socket, hollow force transmission shaft upper end is provided with the sealing ring 3-6 being engaged in hollow dowel steel 4 lower port, casing joint 3-1 upper end and end socket 3-3 lower end and is provided with the dust ring 3-5 being engaged in hollow force transmission shaft 3-4。
The using method of native system is described below in conjunction with Fig. 1,2,3, and the method sequentially includes the following steps:
(1) rotation touch investigating car 14 arrives test site so that it is feeler lever guide-localization circle 17 aligns test hole position, pulls out hydraulic leg 15, leveling chassis of vehicle body plane, starts earth anchor oil motor, screws in earth anchor 16；
(2) in test hole position, setting is supported in ground and by the datum line beam 6 with casing spider 7 of earth anchorage；
(3) cable receptacles 19 of the detector assembly upper end constituted with load pressure detector 2 and displacement detector 3 by the plug of resultant signal cable is connected, hollow dowel steel 4 and sleeve pipe 5 are connected to detector assembly and are drawn from hollow dowel steel 4 by resultant signal cable simultaneously, detector assembly is placed in rotation touch investigating car underbody portion by rotation touch investigating car feeler lever guide-localization circle 17, screw pressure-bearing plate 1 is plugged in detector assembly bottom interface and is worn even by iron wire, sleeve pipe 5 upper end is connected to by adapter coupling 8 the feeler lever nipple 18 of rotation touch investigating car hydraulic means main shaft lower end；
(4) start rotation touch investigating car hydraulic means and make screw pressure-bearing plate 1 rotate injection in test hole position by sleeve pipe 5, detector assembly, the sleeve rotating injection amount of a week, equal to the pitch of screw pressure-bearing plate, increases sleeve pipe and hollow dowel steel section by section and is drawn from the hollow dowel steel increased by resultant signal cable simultaneously；
(5) after screw pressure-bearing plate 1 arrival is given and set subterranean depth, stop sleeve rotating injection, being gripped by sleeve pipe by the casing spider 7 of datum line beam 6 is that in displacement detector 3, fixed grid pole plate 3-8 is fixed, adapter coupling 8 is removed from the feeler lever nipple 18 of main shaft lower end, adjusts rotation touch investigating car hydraulic means main shaft height and make feeler lever nipple 18 be connected with hollow dowel steel 4；
(6) resultant signal cable is connected to measurement data record instrument 12, the main shaft of rotation touch investigating car hydraulic means to hollow dowel steel 4 by settle relative stabilization method or etc. the code requirement stage loading of sedimentation rate method test；
(7) hollow dowel steel loading is stopped after having tested, the feeler lever nipple 18 of hollow dowel steel 4 upper end with rotation touch investigating car hydraulic means main shaft is separated and connects adapter coupling 8, adjusting rotation touch investigating lathe main shaft height makes adapter coupling 8 be connected with sleeve pipe 5, release casing spider 7 gripping sleeve pipe 5, risen by the main shaft of rotation touch investigating car hydraulic means and pull out sleeve pipe 5, hollow dowel steel 4 and detector assembly rise therewith simultaneously and pull out, and screw pressure-bearing plate 1 abandons in test hole。
If carrying out next degree of depth test in same test hole, first resultant signal cable is separated with measurement data record instrument 12, the feeler lever nipple 18 of hollow dowel steel upper end with rotation touch investigating car hydraulic means main shaft is separated and connects adapter coupling 8, adjusting rotation touch investigating lathe main shaft height makes adapter coupling 8 be connected with sleeve pipe 5, start rotation touch investigating car hydraulic means and pass through sleeve pipe, detector assembly makes screw pressure-bearing plate rotate injection in test hole position, increase sleeve pipe and hollow dowel steel section by section and resultant signal cable drawn from the hollow dowel steel increased simultaneously, when screw pressure-bearing plate 1 arrives after next gives and set subterranean depth, stop sleeve rotating injection, abovementioned steps (5) is repeated after resultant signal cable is connected to measurement data record instrument 12, (6) carry out testing。
Claims (5)
1. based on the spiral lamina Deep Plate Load Test system of geotechnical engineering original position rotation contact-surveying vehicle, including rotation touch investigating car, load pressure detector and screw pressure-bearing plate, described load pressure detector bottom is provided with the interface closed with screw pressure-bearing plate side joggle, it is characterized in that: described rotation touch investigating car is provided with the hollow dowel steel and sleeve pipe that are connected to main shaft lower end feeler lever nipple, described sleeve pipe is provided with the adapter coupling being connected with feeler lever nipple, described hollow dowel steel and sleeve pipe are that geological prospecting feeler lever connects combination and telescopic joint combination, sleeve pipe is for rotating injection, hollow dowel steel is rotated injection by sleeve pipe, the sleeve rotating injection amount of a week is equal to the pitch of screw pressure-bearing plate, rotation touch investigating car during test its to be supported in the feeler lever guide-localization circle of bearing soleplate corresponding up and down with test hole position, test hole position arranges and is supported in ground and by the datum line beam of earth anchorage, datum line beam arranges casing spider, casing spider during test and corresponding sleeve pipe fluid-tight engagement；The bottom of sleeve pipe is connected to the detector assembly being made up of displacement detector and load pressure detector, described displacement detector is provided with by casing joint, the housing of drive joint and end socket threaded composition successively from top to bottom, casing joint is provided with the external screw thread being connected with casing threads, housing is provided with through the hollow force transmission shaft of this housing, hollow force transmission shaft is slidably engaged with casing joint and end socket, between hollow force transmission shaft and drive joint, spline is connected, hollow force transmission shaft has the protuberance that external splines is constituted, casing joint lower end is provided with hollow force transmission shaft upper limit boss, this upper limit boss engages with the upper surface of the hollow force transmission shaft protuberance of upper shifting, 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 being connected with hollow dowel steel, hollow force transmission shaft lower end is provided with the nipple threadeded with load pressure detector, between hollow force transmission shaft and drive joint, being respectively provided on two sides with relative to hollow force transmission shaft of spline connection one correspondence position is axial platform, it is provided with interval between the platform of both sides, the moving grid pole plate of linear type capacitive displacement transducer is fixed on hollow force transmission shaft protuberance side platform, fixed grid pole plate is fixed on drive joint side platform, hollow force transmission shaft protuberance side platform is communicated with the via of hollow force transmission shaft axle center hole, via is provided with moving grid plate signal cable, this cable is connected to the circuit board being 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, described casing joint threaded successively, drive joint, each joint portion between end socket is respectively equipped with sealing ring, it is respectively equipped with sealing ring between hollow force transmission shaft and corresponding casing joint and end socket, hollow force transmission shaft upper end is provided with the sealing ring being engaged in hollow dowel steel lower port, described rotation touch investigating car is provided with measurement data record instrument, its resultant signal cable of plug being connected to hollow force transmission shaft upper end cable receptacles is connected to measurement data record instrument。
2. spiral lamina Deep Plate Load Test system according to claim 1, it is characterised 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。
3. spiral lamina Deep Plate Load Test system according to claim 1, it is characterised in that: it is stud that described hollow force transmission shaft upper end connects the nipple of hollow dowel steel, and it is swivel nut that hollow force transmission shaft lower end connects the nipple of load pressure detector。
4. the using method of spiral lamina Deep Plate Load Test system according to claim 1, it is characterised in that comprise the following steps:
(1) rotation touch investigating car arrives test site so that it is feeler lever guide-localization circle aligns test hole position, pulls out supporting leg, leveling chassis of vehicle body plane, starts earth anchor oil motor, screws in earth anchor；
(2) in test hole position, setting is supported in ground and by the datum line beam with casing spider of earth anchorage；
(3) cable receptacles of the detector assembly upper end constituted with load pressure detector and displacement detector by the plug of resultant signal cable is connected, hollow dowel steel and sleeve pipe are connected to detector assembly and are drawn from hollow dowel steel by resultant signal cable simultaneously, detector assembly is placed in rotation touch investigating car underbody portion by rotation touch investigating car feeler lever guide-localization circle, screw pressure-bearing plate is plugged in detector assembly bottom interface and is worn even by iron wire, sleeve upper end is connected to by adapter coupling the feeler lever nipple of rotation touch investigating car hydraulic means main shaft lower end；
(4) start rotation touch investigating car hydraulic means and make screw pressure-bearing plate rotate injection in test hole position by sleeve pipe, detector assembly, the sleeve rotating injection amount of a week, equal to the pitch of screw pressure-bearing plate, increases sleeve pipe and hollow dowel steel section by section and is drawn from the hollow dowel steel increased by resultant signal cable simultaneously；
(5) after the arrival of screw pressure-bearing plate is given and set subterranean depth, stop sleeve rotating injection, by the casing spider of datum line beam, sleeve pipe is gripped, adapter coupling is removed from the feeler lever nipple of main shaft lower end, adjusts rotation touch investigating car hydraulic means main shaft height and make feeler lever nipple be connected with hollow dowel steel；
(6) resultant signal cable is connected to measurement data record instrument, the main shaft of rotation touch investigating car hydraulic means to hollow dowel steel by settle relative stabilization method or etc. the code requirement stage loading of sedimentation rate method test；
(7) hollow dowel steel loading is stopped after having tested, the feeler lever nipple of hollow dowel steel upper end with rotation touch investigating car hydraulic means main shaft is separated and connects adapter coupling, adjusting rotation touch investigating lathe main shaft height makes adapter coupling with telescopic joint, release casing spider gripping sleeve pipe, risen by the main shaft of rotation touch investigating car hydraulic means and pull out sleeve pipe, hollow dowel steel and detector assembly rise therewith simultaneously and pull out, and screw pressure-bearing plate abandons in test hole。
5. spiral lamina Deep Plate Load Test method according to claim 4, characterized by further comprising following steps: if carrying out next degree of depth test in same test hole, first resultant signal cable is separated with measurement data record instrument, the feeler lever nipple of hollow dowel steel upper end with rotation touch investigating car hydraulic means main shaft is separated and connects adapter coupling, adjusting rotation touch investigating lathe main shaft height makes adapter coupling with telescopic joint, start rotation touch investigating car hydraulic means and pass through sleeve pipe, detector assembly makes screw pressure-bearing plate rotate injection in test hole position, increase sleeve pipe and hollow dowel steel section by section and resultant signal cable drawn from the hollow dowel steel increased simultaneously, when screw pressure-bearing plate arrives after next gives and set subterranean depth, stop sleeve rotating injection, abovementioned steps (5) is repeated after resultant signal cable is connected to measurement data record instrument, (6) carry out testing。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610058217.7A CN105699195B (en) | 2016-01-28 | 2016-01-28 | Spiral plate Deep Plate Load Test system and its application method based on geotechnical engineering original position rotation contact-surveying vehicle |
Applications Claiming Priority (1)
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| CN107515134A (en) * | 2017-10-11 | 2017-12-26 | 哈尔滨工业大学 | The stagnant sealing structure of spiral grid type anti-sticking |
| CN107748115A (en) * | 2017-08-20 | 2018-03-02 | 中国铁路设计集团有限公司 | Geotechnical Engineering soil sample box is weighed automatically and the system and method for numbering automatic identification |
| 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 |
| CN109444386A (en) * | 2018-12-06 | 2019-03-08 | 安徽财经大学 | A kind of unginned cotton regain measurement device |
| CN109457682A (en) * | 2018-12-04 | 2019-03-12 | 山东科技大学 | A kind of helical plate load load testing device |
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| CN110409404A (en) * | 2019-07-11 | 2019-11-05 | 东南大学 | It is a kind of can speed change in real time the continuous perforation device of hole pressure touching methods dynamic and its application method |
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| CN107748115A (en) * | 2017-08-20 | 2018-03-02 | 中国铁路设计集团有限公司 | Geotechnical Engineering soil sample box is weighed automatically and the system and method for numbering automatic identification |
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| 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 |
| CN109457682A (en) * | 2018-12-04 | 2019-03-12 | 山东科技大学 | A kind of helical plate load load testing device |
| 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 |
| CN109444386A (en) * | 2018-12-06 | 2019-03-08 | 安徽财经大学 | A kind of unginned cotton regain measurement device |
| CN111766364A (en) * | 2019-04-02 | 2020-10-13 | 中国地震局工程力学研究所 | Hidden sensor for in-situ experiment and embedding method thereof |
| CN109930581A (en) * | 2019-04-19 | 2019-06-25 | 武汉吉欧信海洋科技股份有限公司 | A kind of static sounding device with casing function and continuous injection construction technology |
| CN109930581B (en) * | 2019-04-19 | 2024-02-23 | 武汉吉欧信海洋科技股份有限公司 | Static sounding device with sleeve function and continuous penetrating construction process |
| CN110196190A (en) * | 2019-05-20 | 2019-09-03 | 芜湖市爱德运输机械有限公司 | The intensity test method of helical blade |
| CN110409404A (en) * | 2019-07-11 | 2019-11-05 | 东南大学 | It is a kind of can speed change in real time the continuous perforation device of hole pressure touching methods dynamic and its application method |
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Address after: 300251 No. 10 Minjiang Road, Minquan gate, Tianjin, Hebei District Applicant after: China Railway Design Group Limited Address before: 300251 No. 10 Minjiang Road, Minquan gate, Tianjin, Hebei District Applicant before: China Railway Third Survey and Design Institute Group Ltd. |
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Effective date of registration: 20190415 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 Design Group Limited |