CN111335371A - Vertical static load test equipment of tubular pile single pile - Google Patents
Vertical static load test equipment of tubular pile single pile Download PDFInfo
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- CN111335371A CN111335371A CN202010182679.6A CN202010182679A CN111335371A CN 111335371 A CN111335371 A CN 111335371A CN 202010182679 A CN202010182679 A CN 202010182679A CN 111335371 A CN111335371 A CN 111335371A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Mining & Mineral Resources (AREA)
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Abstract
The invention discloses a vertical static load test device for a single tubular pile, which relates to the technical field of tubular pile detection. According to the invention, the single-pile service environment is fully simulated, so that the detection accuracy is conveniently improved, and the structure is conveniently kept in a vertical state by finely adjusting the angle of the model tank body.
Description
Technical Field
The invention relates to the technical field of tubular pile detection, in particular to a tubular pile single-pile vertical static load test device.
Background
With the rapid development of social economy, the prestressed concrete pipe pile is widely applied to building construction engineering, deep water wharf structures, road and bridge engineering and the like, is a circular tubular reinforced concrete precast pile manufactured by adopting a pretensioning method prestressing process and a centrifugal forming method, has the bearing capacity of a pile become a very important technical means for controlling the engineering quality in engineering construction, and is the most intuitive and reliable method for determining the bearing capacity of a pile foundation through a vertical static load test of the pile foundation.
However, in the existing tubular pile vertical static load detection, the simulation of the detection environment of a single pile is insufficient, and the detection result is deviated; therefore, the existing requirements are not met, and the tubular pile single-pile vertical static load test equipment is provided for the requirements.
Disclosure of Invention
The invention aims to provide a tubular pile single-pile vertical static load test device, which is used for solving the problems that the simulation of the detection environment of a single pile is insufficient in the existing tubular pile vertical static load detection, the detection result is deviated and the like in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a vertical static load test device for a tubular pile single pile comprises a single pile main body, wherein a tubular pile placing mechanism is installed on the outer side of the single pile main body and comprises a model tank body, a simulation soil layer and a tubular pile supporting seat, the simulation soil layer is installed on the outer side of the tubular pile supporting seat, the model tank body is installed on the outer side of the simulation soil layer, three limiting guide mechanisms are installed on the outer side of the tubular pile placing mechanism, one of the three limiting guide mechanisms is provided with a density detection mechanism on one side, a load detection mechanism is installed on the upper end face of the tubular pile placing mechanism and comprises a guide frame, a display rod, a fixed compression column, limiting rings, a connecting cover and a pressure sensor, the upper end face of the connecting cover is provided with a fixed compression column, the fixed compression column is connected with the connecting cover through the pressure sensor, the outer side of the fixed compression column is, a display rod is mounted on the upper end face of the pressure sensor, a guide frame is mounted on the outer side of the display rod, a load adjusting mechanism is mounted on the inner side of the bottom end of the load detection mechanism, and a main body supporting mechanism is mounted on the outer side of the upper end of the load detection mechanism;
the main part supporting mechanism includes top support plate, side support frame, buffering supporting seat, angle modulation seat, supporting spring and bottom link, three angle modulation seat is installed to the inboard of bottom link, three supporting spring is installed to the lower terminal surface of bottom link, the buffering supporting seat is installed to supporting spring's bottom, the side support frame is installed to the one end of buffering supporting seat, one of them top support plate is installed to the up end of side support frame, top hold-down mechanism is installed to main part supporting mechanism's up end.
Preferably, the top hold-down mechanism comprises a hydraulic cylinder, an oil cylinder mounting seat, connecting support legs and a hold-down block, three hydraulic cylinders are mounted on the upper end face of the oil cylinder mounting seat, the hold-down block is mounted at the bottom end of the hydraulic cylinder, and three connecting support legs are mounted on the lower end face of the oil cylinder mounting seat.
Preferably, spacing guiding mechanism includes spacing, pulley mount pad, connecting rod, fixed connection board and leading pulley, the pulley mount pad is installed to one side of fixed connection board, nine leading pulleys are installed to the inboard of pulley mount pad, the pulley mount pad passes through the connecting rod with leading pulley and is connected, and is wherein three spacing is all installed to leading pulley's both sides.
Preferably, load adjustment mechanism includes bottom sprag frame, drive machine, connecting screw and fixed thread bush, drive machine is installed to bottom sprag frame's up end, connecting screw is installed to drive machine's upper end, fixed thread bush is installed in connecting screw's the outside.
Preferably, the density detection mechanism includes closure plate, locking clamp, fixed bolster, lock sleeve and check lock lever, the lock lever is installed to one side of fixed bolster, the lock sleeve is installed in the outside of lock lever, the locking clamp is installed to the one end of lock sleeve, the closure plate is all installed at the both ends of lock clamp.
Preferably, the bottom end of the fixed compression column is fixed on the inner side of the upper end of the connecting cover through threaded connection, a limiting groove is formed in the outer side of the upper end of the fixed compression column, the limiting ring extends to the inner side of the limiting groove, and the limiting ring is fixed on the inner side of the top supporting plate through screw connection.
Preferably, the bottom welded fastening of display rod compresses tightly the up end of post in the fixed, the outside of display rod is provided with the scale, the leading truck passes through the screw connection to be fixed at the up end of top support plate, the up end of leading truck is provided with the guiding hole, the upper end setting of display rod is in the inboard of guiding hole.
Preferably, one end of the buffering supporting seat is fixed on one side of the side supporting frame through screw connection, the bottom end of the angle adjusting seat is fixed on the inner side of the bottom connecting frame through threaded connection, and the upper end of the angle adjusting seat is connected with the model tank body through a roller.
Preferably, the bottom of drive motor is fixed with the fixed block through screwed connection, the bottom sprag frame is connected fixedly with the fixed block through the locating pin, the upper end of connecting screw rod is fixed in the inboard of fixed thread cover through threaded connection.
Preferably, one end of the locking rod is fixed on one side of the fixed supporting plate in a welding mode, the locking sleeve is fixed on the outer side of the other end of the locking rod through threaded connection, and the plugging plate is fixed at two ends of the locking clamp through screw connection.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the hydraulic cylinder drives the compaction block to compact the simulated soil layer, so that the environment of the single-pile main body in actual use can be conveniently and fully simulated, the detection accuracy can be improved, the angle adjusting seat can adjust the height of the angle adjusting seat on the inner side of the bottom connecting frame by rotating the angle adjusting seat, the angle of the model tank body can be finely adjusted, and the model tank body can be kept in a vertical state all the time;
2. according to the invention, the scales are arranged on the outer side of the display rod, the scale change can be read through the guide frame, the density detection mechanism is arranged on the outer side of the model tank body, the two plugging plates can be taken out, so that a simulated soil layer can be sampled, the density of the simulated soil layer can be conveniently detected, the environment interference can be conveniently reduced to the minimum, the tubular pile placing mechanism can be guided and limited through the limiting guide mechanism when the height of the tubular pile placing mechanism is adjusted, and the model tank body can be conveniently prevented from shifting when moving.
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a side view of the present invention in its entirety;
FIG. 3 is a schematic view of a partial structure of the density detecting mechanism according to the present invention;
FIG. 4 is a schematic view of a portion of the top hold-down mechanism of the present invention;
FIG. 5 is a schematic cross-sectional view of the present invention;
fig. 6 is a partial sectional view schematically showing the load detection mechanism of the present invention.
In the figure: 1. a top hold down mechanism; 101. a hydraulic cylinder; 102. an oil cylinder mounting base; 103. connecting the supporting legs; 104. a compression block; 2. a main body support mechanism; 201. a top support plate; 202. a side support frame; 203. buffering the supporting seat; 204. an angle adjusting seat; 205. a support spring; 206. a bottom connecting frame; 3. a limiting guide mechanism; 301. a limiting strip; 302. a pulley mounting seat; 303. a connecting rod; 304. fixing the connecting plate; 305. a guide pulley; 4. a load adjusting mechanism; 401. a bottom support frame; 402. a drive motor; 403. connecting a screw rod; 404. fixing the threaded sleeve; 5. a tubular pile placing mechanism; 501. a model tank body; 502. simulating a soil layer; 503. a tubular pile supporting seat; 6. a load detection mechanism; 601. a guide frame; 602. a display lever; 603. fixing the compression column; 604. a limiting ring; 605. a connecting cover; 606. a pressure sensor; 7. a density detection mechanism; 701. a plugging plate; 702. a locking clamp; 703. fixing the support plate; 704. a locking sleeve; 705. a locking lever; 8. a mono-pile body.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 to 6, an embodiment of the present invention includes: the utility model provides a vertical dead load test equipment of tubular pile single pile, including single pile main part 8, tubular pile placement mechanism 5 is installed in the outside of single pile main part 8, tubular pile placement mechanism 5 includes the model jar body 501, simulation soil layer 502 and tubular pile supporting seat 503, simulation soil layer 502 is installed to the outside of tubular pile supporting seat 503, the model jar body 501 is installed in the outside of simulation soil layer 502, three spacing guiding mechanism 3 are installed to the outside of tubular pile placement mechanism 5, can lead and spacing operation when tubular pile placement mechanism 5 carries out height control through spacing guiding mechanism 3, and then be convenient for guarantee that the model jar body 501 can not skew when moving, density detection mechanism 7 is installed to one side of one of spacing guiding mechanism 3, load detection mechanism 6 is installed to the up end of tubular pile placement mechanism 5, load detection mechanism 6 includes leading truck 601, display lever 602, fixed column 603 that compresses tightly, The upper end face of the connecting cover 605 is provided with a fixed pressing column 603, the outer side of the upper end of the fixed pressing column 603 is provided with a limiting groove, the limiting ring 604 extends to the inner side of the limiting groove, the limiting ring 604 is arranged to limit the height change of the fixed pressing column 603, the fixed pressing column 603 is connected with the connecting cover 605 through the pressure sensor 606, the outer side of the upper end of the fixed pressing column 603 is provided with two limiting rings 604, the upper end face of the pressure sensor 606 is provided with a display rod 602, the outer side of the display rod 602 is provided with a guide frame 601, the inner side of the bottom end of the load detection mechanism 6 is provided with a load adjusting mechanism 4, and the outer side of the upper end of the load detection mechanism 6 is provided with a main body;
main part supporting mechanism 2 includes top support plate 201, side support frame 202, buffering supporting seat 203, angle modulation seat 204, supporting spring 205 and bottom link 206, three angle modulation seat 204 is installed to the inboard of bottom link 206, three supporting spring 205 is installed to the lower terminal surface of bottom link 206, buffering supporting seat 203 is installed to supporting spring 205's bottom, side support frame 202 is installed to the one end of buffering supporting seat 203, top support plate 201 is installed to the up end of one of them side support frame 202, top hold-down mechanism 1 is installed to main part supporting mechanism 2's up end, through fully simulating the mono-pile service environment, be convenient for improve the accuracy that detects, and through carrying out the angle fine setting to the model jar body 501, be convenient for make the structure keep vertical state. The drive motor 402 (model YS7134) referred to in the present invention is commercially available or custom made.
Further, top hold-down mechanism 1 includes pneumatic cylinder 101, hydro-cylinder mount pad 102, connecting support leg 103 and compact heap 104, and three pneumatic cylinder 101 is installed to the up end of hydro-cylinder mount pad 102, and compact heap 104 is installed to the bottom of pneumatic cylinder 101, and three connecting support leg 103 is installed to the lower terminal surface of hydro-cylinder mount pad 102, can fully compress tightly simulation soil layer 502 through top hold-down mechanism 1, and can realize the simulation soil layer 502 of different density.
Further, spacing guiding mechanism 3 includes spacing strip 301, pulley mount pad 302, connecting rod 303, fixed connection board 304 and leading pulley 305, pulley mount pad 302 is installed to one side of fixed connection board 304, nine leading pulleys 305 are installed to the inboard of pulley mount pad 302, pulley mount pad 302 passes through connecting rod 303 with leading pulley 305 to be connected, wherein spacing strip 301 is all installed to three leading pulley 305's both sides, can lead when the tubular pile placement mechanism 5 carries out height control through spacing guiding mechanism 3 and spacing operation, and then be convenient for guarantee that the skew can not take place for model jar body 501 when removing.
Further, the load adjusting mechanism 4 comprises a bottom support frame 401, a transmission motor 402, a connecting screw 403 and a fixed threaded sleeve 404, the transmission motor 402 is installed on the upper end face of the bottom support frame 401, the connecting screw 403 is installed on the upper end of the transmission motor 402, the fixed threaded sleeve 404 is installed on the outer side of the connecting screw 403, and the load adjusting mechanism 4 can realize the change of different loads.
Further, the density detection mechanism 7 comprises a blocking plate 701, a locking clamp 702, a fixed support plate 703, a locking sleeve 704 and a locking rod 705, the locking rod 705 is installed on one side of the fixed support plate 703, the locking sleeve 704 is installed on the outer side of the locking rod 705, the locking clamp 702 is installed on one end of the locking sleeve 704, the blocking plate 701 is installed on both ends of the locking clamp 702, and sampling detection can be performed on the simulated soil layer 502 through the density detection mechanism 7.
Further, the bottom of the fixed post 603 that compresses tightly is fixed in the inboard of connecting the upper end of lid 605 through threaded connection, and the outside of the fixed post 603 upper end that compresses tightly is provided with the spacing groove, and spacing ring 604 extends to the inboard of spacing groove, and spacing ring 604 passes through the fix with screw in the inboard of top support plate 201, is provided with that spacing ring 604 can restrict the altitude variation of fixed post 603 that compresses tightly.
Further, the bottom end of the display rod 602 is welded and fixed on the upper end face of the fixed compression column 603, scales are arranged on the outer side of the display rod 602, the guide frame 601 is fixed on the upper end face of the top support plate 201 through screw connection, a guide hole is formed in the upper end face of the guide frame 601, the upper end of the display rod 602 is arranged on the inner side of the guide hole, and scale change can be read through the guide frame 601.
Further, the one end of buffering supporting seat 203 is fixed in one side of side support frame 202 through screwed connection, and threaded connection is passed through at the bottom of angle modulation seat 204 and is fixed in the inboard of bottom link 206, and the upper end of angle modulation seat 204 passes through the roller connection with the model jar body 501 for angle modulation seat 204 can carry out the regulation of height in the inboard of bottom link 206, and then can carry out the fine setting of angle to the model jar body 501, makes the model jar body 501 can remain vertical state throughout.
Further, a fixed block is fixedly connected to the bottom end of the transmission motor 402 through a screw, the bottom support frame 401 and the fixed block are fixedly connected through a positioning pin, the upper end of the connecting screw 403 is fixedly connected to the inner side of the fixed threaded sleeve 404 through a thread, and when the angle of the model tank 501 is adjusted, the transmission motor 402 and the fixed threaded sleeve 404 can be kept in a coaxial state through the positioning pin.
Further, the one end welded fastening of check lock lever 705 is in one side of fixed support plate 703, and the lock sleeve 704 is fixed in the outside of the check lock lever 705 other end through threaded connection, and shutoff board 701 passes through the screw connection to be fixed at the both ends of locking clamp 702, and the accessible takes out two shutoff boards 701, and then takes a sample to simulation soil layer 502, is convenient for detect the density of simulation soil layer 502.
The working principle is as follows: when the device is used, whether the functions of all parts are intact is checked, a certain amount of simulated soil layer 502 is placed in advance on the inner side of the model tank body 501, so that the tubular pile supporting seat 503 can be fixedly placed, the single-pile main body 8 is placed on the upper end face of the tubular pile supporting seat 503, the single-pile main body 8 and the inner side of the model tank body 501 are completely filled with the simulated soil layer 502, the power supply is switched on, the hydraulic cylinder 101 is started, so that the hydraulic cylinder 101 can drive the pressing block 104 to move downwards under the support of the cylinder mounting seat 102, and further the pressing block 104 can perform pressing operation on the simulated soil layer 502, so that the environment of the single-pile main body 8 in actual use can be fully simulated, the detection accuracy can be improved, the angle adjusting seat 204 can perform height adjustment on the inner side of the bottom connecting frame 206 by rotating the angle adjusting seat 204, and further fine, so that the model tank 501 can be always kept in a vertical state, the transmission motor 402 is started, the transmission motor 402 drives the connecting screw 403 to rotate on the inner side of the fixed threaded sleeve 404, the height of the model tank 501 can be changed through the angle adjusting seat 204, and the load on the single-pile main body 8 is changed, wherein the single-pile main body 8 is connected with the fixed compression column 603 through the pressure sensor 606, so that the load can be transmitted to the PLC processor through electrical connection in real time when the pressure sensor 606 detects the load, and then the load is displayed, the scale is arranged on the outer side of the display rod 602, the scale change can be read through the guide frame 601, the density detection mechanism 7 is arranged on the outer side of the model tank 501, the two blocking plates 701 can be taken out, the simulated soil layer 502 can be sampled, and the density of the simulated soil layer 502 can be detected conveniently, be convenient for guarantee that environmental disturbance falls to minimum, can lead when the tubular pile placement machine constructs 5 and carries out the altitude mixture control and spacing operation through spacing guiding mechanism 3, and then be convenient for guarantee that the model jar body 501 can not take place the skew when removing.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a vertical static test equipment of tubular pile single pile, includes the single pile main part, its characterized in that: the tubular pile placing mechanism is installed on the outer side of the single pile main body and comprises a model tank body, a simulation soil layer and a tubular pile supporting seat, the simulation soil layer is installed on the outer side of the tubular pile supporting seat, the model tank body is installed on the outer side of the simulation soil layer, three limiting guide mechanisms are installed on the outer side of the tubular pile placing mechanism, one of the limiting guide mechanisms is provided with a density detection mechanism, the upper end face of the tubular pile placing mechanism is provided with a load detection mechanism, the load detection mechanism comprises a guide frame, a display rod, a fixed compression column, a limiting ring, a connecting cover and a pressure sensor, the upper end face of the connecting cover is provided with a fixed compression column, the fixed compression column is connected with the connecting cover through the pressure sensor, the outer side of the upper end of the fixed compression column is provided with two limiting rings, and the upper, the outer side of the display rod is provided with a guide frame, the inner side of the bottom end of the load detection mechanism is provided with a load adjusting mechanism, and the outer side of the upper end of the load detection mechanism is provided with a main body supporting mechanism;
the main part supporting mechanism includes top support plate, side support frame, buffering supporting seat, angle modulation seat, supporting spring and bottom link, three angle modulation seat is installed to the inboard of bottom link, three supporting spring is installed to the lower terminal surface of bottom link, the buffering supporting seat is installed to supporting spring's bottom, the side support frame is installed to the one end of buffering supporting seat, one of them top support plate is installed to the up end of side support frame, top hold-down mechanism is installed to main part supporting mechanism's up end.
2. The vertical static test equipment of tubular pile single pile of claim 1, characterized in that: the top hold-down mechanism comprises a hydraulic cylinder, an oil cylinder mounting seat, connecting supporting legs and a pressing block, wherein the three hydraulic cylinders are mounted on the upper end face of the oil cylinder mounting seat, the pressing block is mounted at the bottom end of the hydraulic cylinder, and the three connecting supporting legs are mounted on the lower end face of the oil cylinder mounting seat.
3. The vertical static test equipment of tubular pile single pile of claim 1, characterized in that: spacing guiding mechanism includes spacing, pulley mount pad, connecting rod, fixed connection board and leading pulley, the pulley mount pad is installed to one side of fixed connection board, nine leading pulleys are installed to the inboard of pulley mount pad, the pulley mount pad passes through the connecting rod with leading pulley and is connected, and is wherein three spacing is all installed to leading pulley's both sides.
4. The vertical static test equipment of tubular pile single pile of claim 1, characterized in that: the load adjusting mechanism comprises a bottom support frame, a transmission motor, a connecting screw rod and a fixed thread sleeve, wherein the transmission motor is installed on the upper end face of the bottom support frame, the connecting screw rod is installed at the upper end of the transmission motor, and the fixed thread sleeve is installed on the outer side of the connecting screw rod.
5. The vertical static test equipment of tubular pile single pile of claim 1, characterized in that: the density detection mechanism comprises a plugging plate, a locking clamp, a fixed support plate, a locking sleeve and a locking rod, wherein the locking rod is installed on one side of the fixed support plate, the locking sleeve is installed on the outer side of the locking rod, the locking clamp is installed at one end of the locking sleeve, and the plugging plate is installed at two ends of the locking clamp.
6. The vertical static test equipment of tubular pile single pile of claim 1, characterized in that: the bottom of the fixed compression column is fixed on the inner side of the upper end of the connecting cover through threaded connection, the outer side of the upper end of the fixed compression column is provided with a limiting groove, the limiting ring extends to the inner side of the limiting groove, and the limiting ring is fixed on the inner side of the top supporting plate through screw connection.
7. The vertical static test equipment of tubular pile single pile of claim 1, characterized in that: the bottom welded fastening of demonstration pole is at the fixed up end that compresses tightly the post, the outside of demonstration pole is provided with the scale, the leading truck passes through the screw connection to be fixed at the up end of top support plate, the up end of leading truck is provided with the guiding hole, the upper end setting of demonstration pole is in the inboard of guiding hole.
8. The vertical static test equipment of tubular pile single pile of claim 1, characterized in that: the one end of buffering supporting seat passes through the screwed connection to be fixed in one side of side support frame, the inboard at the bottom link is fixed through threaded connection to the bottom of angle modulation seat, the upper end and the model jar body of angle modulation seat pass through the gyro wheel and are connected.
9. The vertical static test equipment of tubular pile single pile of claim 4, characterized in that: the bottom of the transmission motor is fixedly connected with a fixed block through a screw, the bottom support frame is fixedly connected with the fixed block through a positioning pin, and the upper end of the connecting screw rod is fixedly connected with the inner side of the fixed threaded sleeve through threads.
10. The vertical static test equipment of tubular pile single pile of claim 5, characterized in that: one end of the locking rod is fixed on one side of the fixed supporting plate in a welding mode, the locking sleeve is fixed on the outer side of the other end of the locking rod through threaded connection, and the plugging plate is fixed at two ends of the locking clamp through screw connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010182679.6A CN111335371B (en) | 2020-03-16 | 2020-03-16 | Vertical static load test equipment of tubular pile single pile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010182679.6A CN111335371B (en) | 2020-03-16 | 2020-03-16 | Vertical static load test equipment of tubular pile single pile |
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| CN111335371A true CN111335371A (en) | 2020-06-26 |
| CN111335371B CN111335371B (en) | 2021-09-10 |
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| CN101806073A (en) * | 2010-04-09 | 2010-08-18 | 上海广联建设发展有限公司 | Resistance-free load test device and method for upper extension section of foundation pile |
| KR101152783B1 (en) * | 2011-11-15 | 2012-06-12 | (주)유광계측 | Deflection survey device of bi directionpile load test |
| CN102995669A (en) * | 2012-12-14 | 2013-03-27 | 广东省建筑科学研究院 | Large-tonnage foundation pile uplift-resistant static test connection device, loading counter-force system and method |
| CN203594057U (en) * | 2013-12-08 | 2014-05-14 | 中铁西北科学研究院有限公司 | Detecting device for vertical extraction-resistant static test of single pile through buttress method |
| CN107165203A (en) * | 2017-04-28 | 2017-09-15 | 浙江科技学院 | The method of testing of single-pile vertical orientation static test under the conditions of a kind of stable artesian water |
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2020
- 2020-03-16 CN CN202010182679.6A patent/CN111335371B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806073A (en) * | 2010-04-09 | 2010-08-18 | 上海广联建设发展有限公司 | Resistance-free load test device and method for upper extension section of foundation pile |
| KR101152783B1 (en) * | 2011-11-15 | 2012-06-12 | (주)유광계측 | Deflection survey device of bi directionpile load test |
| CN102995669A (en) * | 2012-12-14 | 2013-03-27 | 广东省建筑科学研究院 | Large-tonnage foundation pile uplift-resistant static test connection device, loading counter-force system and method |
| CN203594057U (en) * | 2013-12-08 | 2014-05-14 | 中铁西北科学研究院有限公司 | Detecting device for vertical extraction-resistant static test of single pile through buttress method |
| CN107165203A (en) * | 2017-04-28 | 2017-09-15 | 浙江科技学院 | The method of testing of single-pile vertical orientation static test under the conditions of a kind of stable artesian water |
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