CN103255754B - A kind of indoor inclination static cone penetration model test device - Google Patents
A kind of indoor inclination static cone penetration model test device Download PDFInfo
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- CN103255754B CN103255754B CN201310150614.3A CN201310150614A CN103255754B CN 103255754 B CN103255754 B CN 103255754B CN 201310150614 A CN201310150614 A CN 201310150614A CN 103255754 B CN103255754 B CN 103255754B
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Abstract
The present invention relates to a kind of equipment being applied to the indoor static sounding model testing of civil engineering, comprise injection system, carriage and test model case, described injection system comprises mechanical part and power section, described mechanical part comprises angular adjustment bearing, static sounding bar, static sounding frame, chain and gear drive, connect successively; Described power section comprises threephase asynchronous machine and variable-frequency governor, and the two is connected; The ball bearing that described carriage comprises channel-section steel, square steel and connects thereon; Test model box plate is steel plate, and surrounding adopts organic glass, and base plate and surrounding are tightly connected; Meanwhile, in order to ensure the steadiness of model casing, periphery skeleton adopts angle steel welding.The present invention can be implemented in the penetration test of optional position in model casing horizontal plane, and injection controllable-rate in certain speed range also remains a constant speed; Further, compare the conventional equipment carrying out vertical cone penetration test only, the present invention also can realize the inclination cone penetration test in certain range of tilt angles.
Description
Technical field
The invention belongs to technical field of civil engineering, relate to and be applied to the indoor static sounding model test equipment of civil engineering, especially effectively can obtain the intensity on stratum and the testing equipment of otherwise information for when testing difficulty in position.
Background technology
Cone penetration test (Static Cone Penetration Test is called for short CPT) utilizes accurate static(al) to be pressed in soil by the circular cone probe of certain specification and shape by a series of probe with constant injection speed, survey in note penetration process suffered resistance of popping one's head in simultaneously, carry out the field testing procedure of the physico-mechanical properties of indirect judgement soil according to the penetration resistance size recorded.
Cone penetration test is widely used in field trial test, has quick, accurate, economical and saves the features such as manpower, can obtain the intensity on stratum and otherwise information continuously, not by the impact of soil sample disturbance.This is vertically changing more complicated for foundation soil, and other conventional survey laboratory facilities do not find out by test the situation that soil layer changes, and cone penetration test has unique superiority.Except conventional vertical cone penetration test, due to the special restriction of geotechnical engineering geological conditions (as soil layer inclined deposition exists cutters face, inclination sheet deposition and inclination vein), the requirement of geotechnical engineering design construction (taper pile, bolt support, plate brad supporting and tunneling shield excavation etc.), need the engineering mechanics property obtaining the along inclined direction soil body; Or because the restriction of on-the-spot test site condition cannot carry out conventional vertical cone penetration test, this all requires to carry out inclination cone penetration test.Although original position static sounding has plurality of advantages, there is test repeatability difference, test conditions poor controllability, invest greatly and test and last long shortcoming in test in position; And the test of indoor static sounding model casing has the important advantage of repeatability, sample uniformity good and fringe conditions and controlled three aspects of sample stress history, can Quantitative study static sounding model casing test in influence factor, be to the effective correction means of the one of field trial and development.
In prior art with the present invention immediate be Shanghai Urban Construction Academy invent static cone penetration equipment (as shown in Figure 1) (document source: Shanghai Urban Construction Academy. static cone penetration equipment: Chinese Patent Application No., 201020532368.X), the rig arranging pillar required for static seratum exploring test and static contact-detection machine unite two into one by it, but it can only carry out the cone penetration test of Vertical dimension.Have no the cone penetration test device that can be applicable to following situation at present: when testing difficulty in position, carry out injection direction and the controlled static sounding model testing of penetrating speed in indoor, effectively obtain the intensity on stratum and otherwise information.
Summary of the invention
The object of this invention is to provide a kind of indoor static sounding model test equipment, when testing difficulty in position, carry out model testing in indoor, effectively obtain the intensity on stratum and the information of other side.
For achieving the above object, solution of the present invention is: power set comprise threephase asynchronous machine and variable-frequency governor, can be implemented in the adjustment of penetrating speed in certain limit; Regulate bearing can change angle arbitrarily, under making injection equipment appointment angle of inclination within the specific limits, carry out static sounding model testing; Carriage is connected with lower model casing with bearing, these top injection structure horizontal and vertical any slips on model casing horizontal plane of feeler lever, static sounding frame, power set and bearing can be made, realize optional position within the scope of model casing horizontal plane and test.
Variable-frequency governor is connected with threephase asynchronous machine, is supplied to threephase asynchronous machine by alternating current electric network source being transformed into voltage, frequency can regulate, and is reached the object changing motor speed by the frequency changing alternating current.
Adopt two block plates as the main supporting part of bearing, the adjusting device of angle adopts the screw rod of two same sizes, screw rod one end is placed on a block plate below in an articulated manner, the hole of a strip is respectively opened at steel plate two ends above, steel plate is above passed and along with the angle change adjusting position of two steel plates to make screw rod, make screw rod and steel plain vertical all the time, so design can make the support of screw rod to superstructure more firm.The nut at the two ends up and down of screw rod steel plate above, in order to locked to it after reach angle on target between steel plate, overallly to resist in the selfweight stress of superstructure and penetration process feeler lever to the counter-force of structure by the resistance to compression of screw rod and the shear strength of tensile strength and nut.For the accurate control of angle, be provided with the triangle iron block that some have fixed angle, the angle of screw rod limit to plate can be placed on and check, supporting role can also be had to superstructure while angulation.
A circular opening is opened in the center of holder top steel plate, diameter is slightly larger than the external diameter of injection feeler lever, hole welds a guiding device, guiding device is a hollow cylindrical cast iron, and the interior diameter of cast iron is a bit larger tham feeler lever diameter, when feeler lever is installed, pass from guiding device inside, the iron block be connected with chain with top is connected, and in order to lead to feeler lever in penetration process, makes feeler lever carry out injection under the angle of specifying.
Carriage is made up of sliding tray and sliding shoe, sliding tray adopts channel-section steel, and sliding shoe adopts square steel, and the superstructure of static sounding is moved in the area of plane territory of model casing, to carry out in distance casing edge different distance, penetration test is carried out in the testing site of diverse location.
Be equipped with ball bearing below described square steel slide block to be connected with chute, ball bearing, as wheel, can make the rolling of slide block by ball bearing on chute realize relative motion.
Square steel two parallel surface respectively opens a circular opening, to settle a cylinder axis that can run through ball bearing, (such as adopts No. 205 ball bearings of market purchasing.) perforate on square steel slide block and channel-section steel chute contact surface, ball bearing is contacted with channel-section steel, and the rolling by bearing between chute, slide block realizes relative motion.
Extend one section of steel frame in model casing outside, framework is settled a crossbeam, crossbeam also settles a carriage, two symmetrically arranged supporting steel pipes are stretched out from slide block, be connected with static sounding frame, steel pipe two ends are articulated and connected, and support when sustain angle tilts larger.
Owing to have employed such scheme, the present invention has following advantage:
(1) cone penetration test can realize any direction inclination penetration test within the scope of certain angle;
(2) carriage is made up of transverse sliding mechanism and longitudinal sliding motion mechanism, can be implemented in the penetration test of optional position in model casing horizontal plane;
(3) static penetrometer bracing or strutting arrangement, can prevent static penetrometer in inclining experiment injection from toppling;
(4) cone penetration test realizes the injection of arbitrary speed in certain limit.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram of existing static cone penetration equipment.
The structural representation of Fig. 2 embodiment of the present invention.
Fig. 3 is middle clamping device 15 schematic diagram embodiment illustrated in fig. 1.
Fig. 4 is middle angular adjustment bearing 11 structure side view embodiment illustrated in fig. 1.
Fig. 5 is the top view of middle base-plate 35 embodiment illustrated in fig. 3.
Detailed description of the invention
Below in conjunction with accompanying drawing illustrated embodiment, the invention will be further described.
A kind of static sounding shop test equipment comprises injection system, carriage and model casing 1.
Model casing 1 lands the bottom being placed on complete equipment, and surrounding is made up of tempered glass 22, and surrounding uses angle steel 16 channel-section steel 23 to go along with sb. to guard him.At the upper weld carriage of model casing 1.
Injection system comprises mechanical part and power section.Mechanical part comprises static sounding frame, angular adjustment bearing 11, probe 2, static sounding bar 3, gear 4 and gear train 5; Power section comprises threephase asynchronous machine 6 and variable-frequency governor 7.
Carriage is by square steel 8, channel-section steel 9 and ball bearing 10 form, be made up of length direction and width both direction, channel-section steel 9 edge of a wing of horizontal direction deviates from direction, ground and is welded on the angle steel 16 of going along with sb. to guard him around model casing top, square steel 8 level that opening places ball bearing 10 puts into the abdominal cavity of channel-section steel 9, wherein, square steel 8 opens a circular opening respectively in parallel both sidewalls, size just can put down one can through the circular shaft of 205 ball bearings, circular shaft is settled two ball bearings 10 as movable pulley, square steel 8 with the face of channel-section steel 9 joint is opened enough large hole ball bearing 10 is contacted with channel-section steel 9 web, top injection system can be realized slide optional position in the horizontal plane of casing, after running to assigned address, locked by clamping device 15, carriage is made to be fixed on assigned address.The enlarged drawing of clamping device 15 as shown in Figure 3, by U-shaped steel bar 32, screw rod 33 and packing ring 34 form, and snap in U-shaped steel bar 32 during use by slide rail channel-section steel 9 and slide block square steel 8, rotary screw 33 makes it by packing ring 34 by channel-section steel 9 and square steel 8 clamping fastener, realizes the locked of carriage.
Static sounding frame is mainly reserved by four hollow steel pipes 12 and top the steel plate 13 that feeler lever passes through and is formed, and is connected with the angular adjustment bearing 11 of bottom.Hollow steel pipe 12 is with the steel plate 13 on top and angular adjustment bearing 11 type of attachment of bottom and welds.Whole static sounding frame is the important component part of injection mechanical part, and each several part is connected into entirety by it.Gear train 5 comprises three gears on top and two gears of bottom, and be connected by two axles, be connected with the angular adjustment bearing 11 of bottom with top steel plate 13 respectively, gear train 5 is meshed with gear 4, gear 4 is connected by gear 31 with threephase asynchronous machine 6, to realize transmission.Gear 4, gear train 5, by chain 29,30, drive pin to be connected to static sounding bar 3 and the probe 2 of iron block 21.Power section is mainly threephase asynchronous machine 6 and variable-frequency governor 7.Variable-frequency governor 7 is connected by cable 17 with threephase asynchronous machine 6, threephase asynchronous machine 6 is placed on the hollow steel pipe 12 of static sounding frame by support 18, and by chain 29, gear 4, gear train 5 drive with feeler lever 3 and pop one's head in 2 injection, feeler lever 3 is corollary equipment with probe 2, and probe 2 is threaded connection in feeler lever 3 bottom.Feeler lever 3 is driven to be connected by four pins 19 with chain 4 with two blocks of transmission steel plates 18 with the injection of probe 2, two blocks of transmission steel plates 18 punch, chain 30 passes through between two blocks of transmission steel plates 18, pin 19 is through the hole on transmission steel plate and the hole on chain, thus make two blocks of transmission steel plates 18 be fixed on chain 30, two blocks of transmission steel plates 18 are made to change position with the movement of chain 30, weld one between two blocks of transmission steel plates 18 and connect bloom 21, connect the screw 20 that on bloom 21, welding one is engaged with static sounding bar 3.
After switching on power, the frequency being changed input current by variable-frequency governor 7 makes the rotating speed of three asynchronous machines 6 change within the specific limits, gear 4, gear train 5, two blocks of transmission steel plates 18, four pins 19, screws 20 can be passed through like this and be connected bloom 21, making static sounding bar 3 and probe 2 according to the even speed injection in a certain scope.
Be illustrated in figure 4 angular adjustment seat structure figure, angular adjustment bearing 11 forms primarily of two block plates 35,36, top steel plate 35 and lower steel plate 36 all weld the hollow cylinder cast iron 37 of a certain length, connected through the hollow cylinder cast iron 37 on upper lower steel plate 35,36 by slightly less than hollow cylinder cast iron 37 internal diameter for diameter pin 38, it is opposing parallel that the cushion block 39 of middle welding two blocks of steel ensures between two block plates.Opening a circular opening 40 in the middle of top steel plate 35 makes feeler lever pass through, and each hole-opening 41 in both sides makes the screw rod 42 of both sides pass through, and screw rod 42 is used for controlling the angle of top steel plate 1, makes the superstructure be connected on top steel plate 1 can skewed at any angle.Screw rod 42 one end is connected by bolt 43 with lower steel plate 36, can make the arbitrarily angled rotation of screw rod 42.After making top steel plate 35 turn to the angle of requirement, fix top steel plate 35 by upper and lower two nuts 44,45, thus the injection system that can realize top carries out injection according to certain angle of inclination.Cushion block 39 can be welded on top steel plate 35, or it is also passable to be welded on lower steel plate.In penetration process, in order to keep probe 2 can according to the angle injection of specifying in the soil in model casing, on the top steel plate 35 of bearing, circular opening 40 upper weld one inside diameter be a bit larger tham the hollow cylinder cast iron 28 of static sounding bar 3 diameter.Probe 2 is installed, during static sounding bar 3, first static sounding bar 3 is passed hollow cylinder cast iron 28, by screw thread, probe 2 and static sounding bar 3 are connected below lower steel plate 36 again, like this, certain angle of inclination can be kept in the process of injection probe 2, reach requirement of experiment.In addition on model casing length direction, track 24 stretches out a segment distance, overhanging track welds the parallel walking of carriage that a slide rail identical with box house and slide block 27 follow inside, carries out locked in the position of specifying.As previously mentioned, the locking function at this place is also realized by clamping device 15.When certain angle inclination pressed by angular adjustment bearing 11, in order to ensure the stability of structure, on the slide block on the hollow steel pipe 12 of static sounding frame and on overhanging track, each welding one steel billet 25, connects a supporting steel pipe 14 by bolt 26 between steel billet 25.
The present invention devises static penetrometer angular adjustment bearing, and the basis of original vertically injection achieves the penetration test within the scope of along inclined direction certain angle; Carriage is made up of horizontal slide construction and longitudinal sliding motion mechanism, can be implemented in the penetration test of optional position in model casing horizontal plane; The ac frequency that static sounding penetration test changes input threephase asynchronous machine by variable-frequency governor achieves penetrating speed Controllable uniform in certain speed range.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (8)
1. one kind is applied to the equipment of the indoor static sounding model testing of civil engineering, comprise injection system, carriage and model casing, it is characterized in that: the power set in described injection system comprise be connected with variable-frequency governor threephase asynchronous machine to realize the adjustment of penetrating speed; Angular adjustment bearing in described injection system changes cone penetration test injection angle, carries out static sounding model testing under making injection equipment appointment angle of inclination within the specific limits; Described carriage is connected with model casing with angular adjustment bearing, make these top injection structure horizontal and vertical any slips on model casing horizontal plane of static sounding bar, static sounding frame, power set and angular adjustment bearing, realize optional position within the scope of model casing horizontal plane and test;
Adopt two block plates as the main supporting part of bearing, the adjusting device of angle adopts the screw rod of two same sizes, screw rod one end is placed on a block plate below in an articulated manner, the hole of a strip is respectively opened at steel plate two ends above, pass steel plate above to make screw rod and along with the angle change adjusting position of two steel plates, make screw rod and steel plain vertical all the time.
2. indoor static sounding model test equipment as claimed in claim 1, it is characterized in that: described variable-frequency governor is connected with threephase asynchronous machine, be supplied to threephase asynchronous machine by alternating current electric network source being transformed into voltage, frequency can regulate, change motor speed by the frequency changing alternating current.
3. indoor static sounding model test equipment as claimed in claim 1, it is characterized in that: the nut at the two ends up and down of described screw rod steel plate above, in order to locked to it after reach angle on target between steel plate, overallly to resist in the selfweight stress of superstructure and penetration process feeler lever to the counter-force of structure by the resistance to compression of screw rod and the shear strength of tensile strength and nut.
4. indoor static sounding model test equipment as claimed in claim 1, is characterized in that:
The triangle cushion block being provided with fixed angle is placed on the angle of screw rod limit to plate and checks, while angulation, also have supporting role to superstructure.
5. indoor static sounding model test equipment as claimed in claim 1, it is characterized in that: the centre of described holder top steel plate arranges a guiding device, guiding device is a hollow cylindrical cast iron, the interior diameter of cast iron is greater than feeler lever diameter, in order to lead to feeler lever in penetration process, feeler lever is made to carry out injection under the angle of specifying.
6. indoor static sounding model test equipment as claimed in claim 1, it is characterized in that: described carriage is made up of sliding tray and sliding shoe, sliding tray adopts channel-section steel, sliding shoe adopts square steel, the superstructure of static sounding is moved in the area of plane territory of model casing, to carry out in distance casing different distance, penetration test is carried out in the testing site of diverse location.
7. indoor static sounding model test equipment as claimed in claim 6, it is characterized in that: be equipped with ball bearing below described square steel slide block and be connected with chute, ball bearing makes the rolling of slide block by ball bearing on chute realize relative motion as wheel.
8. indoor static sounding model test equipment as claimed in claim 4, it is characterized in that: extend one section of steel frame in model casing outside, framework is settled a crossbeam, crossbeam also settles a carriage, and described carriage is made up of sliding tray and sliding shoe, and sliding tray adopts channel-section steel, sliding shoe adopts square steel, stretch out two steel pipes from slide block to be connected with static sounding frame, steel pipe two ends are articulated and connected, and support when sustain angle tilts larger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310150614.3A CN103255754B (en) | 2013-04-26 | 2013-04-26 | A kind of indoor inclination static cone penetration model test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310150614.3A CN103255754B (en) | 2013-04-26 | 2013-04-26 | A kind of indoor inclination static cone penetration model test device |
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| CN103255754A CN103255754A (en) | 2013-08-21 |
| CN103255754B true CN103255754B (en) | 2015-07-29 |
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| CN105971025B (en) * | 2016-05-16 | 2018-03-16 | 浙江大学 | Counterforce device and method for the oblique cone penetration test of tunnel internal |
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| CN106442141A (en) * | 2016-12-02 | 2017-02-22 | 广东中科华大工程技术检测有限公司 | Anti-drawing detection device for anchor rod |
| CN107340381B (en) * | 2017-07-26 | 2023-04-14 | 中国科学院、水利部成都山地灾害与环境研究所 | Mobile test device for researching gully head erosion and test method thereof |
| CN110185074B (en) * | 2019-06-26 | 2023-10-20 | 金陵科技学院 | Inclined pile model test device and test method |
| CN110765628A (en) * | 2019-10-30 | 2020-02-07 | 中国海洋大学 | Indoor penetration multipurpose test system and method |
| CN111021440A (en) * | 2020-03-07 | 2020-04-17 | 西南交通大学 | CPT integrated geotechnical packaging granular pile indoor model test device and method |
| CN115354641A (en) * | 2022-09-14 | 2022-11-18 | 中国科学院力学研究所 | Underwater static sounding penetration test device and method based on wave current environment simulation |
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