CN101846561A - Mollisol area friction pile load transference curve tester - Google Patents
Mollisol area friction pile load transference curve tester Download PDFInfo
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- CN101846561A CN101846561A CN201010203909A CN201010203909A CN101846561A CN 101846561 A CN101846561 A CN 101846561A CN 201010203909 A CN201010203909 A CN 201010203909A CN 201010203909 A CN201010203909 A CN 201010203909A CN 101846561 A CN101846561 A CN 101846561A
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- feeler lever
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- friction pile
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Abstract
The invention discloses a mollisol area friction pile load transference curve tester. One end of a feeler lever (7) is installed on a panel (6) and is connected with a master force application gear (5) which is connected with a gear driving device; the feeler lever (7) is provided with a torque sensor (10), the feeler lever linkage section (11) of a probe (8) is fixedly connected with a friction drum (13); a taper part (14) is movably sheathed on the bottom of the friction drum (13) by a taper part linkage section (12); and the feeler lever linkage section (11) is fixedly connected with the other end of the feeler lever (7). The invention is the mollisol area friction pile load transference curve tester which can actually measure the torque-corner relationship of the feeler lever so as to calculate the frictional resistance of the probe side surface and perform the curve relation with relative displacement so as to reckon pile side load transference curve and calculate the settlement of the top of the friction pile. The invention simplifies the test process of the friction pile side load transference curve and has simple structure and reliable performance.
Description
Technical field
Patent of the present invention relates to a kind of device that can measure friction pile Load Transfer curve in soft clay area, refer in particular to probe is pressed into the soft soil foundation certain depth after, by gear train probe is rotated in soil, the top keeps motionless during the probe rotation, only the native on every side friction force effect that provides is provided in the side, relation during rotation between actual measurement probe torsional forces and the corner is to calculate the device of friction pile Load Transfer curve.
Background technology
When Deep Thick Soft Ground Area uses friction pile to bear the superstructure load, often need its settling amount is checked, with the harm that prevents that settling amount or non-uniform settling amount from causing superstructure, and will calculate the friction pile settling amount time, must determine a stake pedosphere area load transfer curve earlier.At present, a conventional method of determining stake pedosphere area load transfer curve is a detective pole embedded set stress-strain test device in position, then the stake top application is added vertical load, the pile strain of actual measurement stake top displacement and each measuring point, obtain relation between diverse location pile side resistance and pile body displacement by conversion, but realize that this method needs the construction testing stake, counterforce device is installed, buries a large amount of testing elements underground, costly and the duration is longer, be difficult to apply.If can design a kind of easy in-situ testing device, interface friction characteristics by the probe of certain position rotary test in the soil body actual measurement soil body and probe, convert by the certain experience method then and obtain friction pile stake side Load Transfer curve, can effectively reduce testing expense, help applying on a large scale.Still there is not this type of device at present.
Summary of the invention
Technical matters to be solved by this invention provides a kind of torque-corner relation that can survey feeler lever, calculate the curved line relation between friction resistance performance of probe side surface and the relative displacement thus, calculate stake side Load Transfer curve thereby reach, calculate the mollisol area friction pile load transference curve tester of friction pile stake top settling amount.
In order to solve the problems of the technologies described above, mollisol area friction pile load transference curve tester provided by the invention, feeler lever one end is installed in the dull and stereotyped main application of force gear of going up and be connected with, described main application of force gear is connected with gear device, on described feeler lever, be provided with torsion torque sensor, the feeler lever linkage section of probe is fixedly connected with friction cylinder, tapering part hangs over the bottom of described friction cylinder by tapering part linkage section movable sleeve, and described feeler lever linkage section is fixedlyed connected with the other end of described feeler lever.
Described gear device is to be provided with change gear by the roller bearing clip on described flat board, described change gear is connected with described main application of force meshed transmission gear, described change gear is coaxially connected with the secondary transmission gear, be provided with the one-level transmission gear with described secondary transmission gear engaged transmission on described flat board, described one-level transmission gear is connected with rocking bar.
Adopt the mollisol area friction pile load transference curve tester of technique scheme, when testing, at first probe is fixed on the less feeler lever of diameter, the counterforce device that utilization is anchored in the face of land is pressed into probe to predetermined depth, leave standstill certain hour, after treating that soil body excess pore water pressure dissipates, utilize gear device that feeler lever is applied torsion load.When probe rotated, because the top tapered part can not be transmitted moment of torsion with friction cylinder, whole probe only was subjected to the effect of the outside soil body friction resistance of friction cylinder.Take place in the process of corner displacement at probe, utilize the torsion torque sensor that is loaded on the top to measure the moment of torsion that is applied, judge the corner displacement that is taken place, obtain the torsion curve of feeler lever thus by the gear anglec of rotation.
In sum, the present invention is a kind of torque-corner relation that can survey feeler lever, calculate the curved line relation between friction resistance performance of probe side surface and the relative displacement thus, calculate stake side Load Transfer curve thereby reach, calculate the mollisol area friction pile load transference curve tester of friction pile stake top settling amount, the present invention has simplified the test process of friction pile stake side Load Transfer curve, and simple in structure, dependable performance.
Description of drawings
Fig. 1 is the tester overall diagram;
Fig. 2 is probe detailed construction figure.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 and Fig. 2, feeler lever 7 one ends are installed on dull and stereotyped 6 and are connected with main application of force gear 5, on feeler lever 7, be provided with torsion torque sensor 10, the feeler lever linkage section 11 of probe 8 is fixedly connected with friction cylinder 13, tapering part 14 hangs over the bottom of friction cylinder 13 by tapering part linkage section 12 movable sleeves, feeler lever linkage section 11 is fixedlyed connected with the other end of feeler lever 7, on dull and stereotyped 6, be provided with change gear 4 by roller bearing clip 9, change gear 4 is connected by meshing transmission with main application of force gear 5, change gear 4 is coaxially connected with secondary transmission gear 3, be provided with the one-level transmission gear 2 with secondary transmission gear 3 engaged transmission on dull and stereotyped 6, one-level transmission gear 2 is connected with rocking bar 1.
Referring to Fig. 1 and Fig. 2, when test is carried out, rotation rocking bar 1, driving one-level transmission gear 2 and secondary transmission gear 3 slowly rotates, change gear 4 rotates thereupon then, and applies moment of torsion by 5 pairs of feeler levers 7 of main application of force gear of interlock with it, and feeler lever 7 will drive probe 8 and rotate.When probe 8 rotates,, can't transmit moment of torsion, so have only the friction cylinder 13 outside soil bodys that friction resistance is provided because tapering part 14 only depends on tapering part linkage section 12 movable sleeves to hang on the friction cylinder 13.In the rotary course, measure the suffered moment of torsion of feeler lever, determine the angle of feeler lever rotation by the rotating cycle of rocking bar 1 by torsion torque sensor 10.
Claims (2)
1. mollisol area friction pile load transference curve tester, it is characterized in that: feeler lever (7) one ends are installed in flat board (6) and go up and be connected with main application of force gear (5), described main application of force gear (5) is connected with gear device, on described feeler lever (7), be provided with torsion torque sensor (10), the feeler lever linkage section (11) of probe (8) is fixedly connected with friction cylinder (13), tapering part (14) hangs over the bottom of described friction cylinder (13) by tapering part linkage section (12) movable sleeve, and described feeler lever linkage section (11) is fixedlyed connected with the other end of described feeler lever (7).
2. mollisol area friction pile load transference curve tester according to claim 1, it is characterized in that: described gear device is to go up at described flat board (6) to be provided with change gear (4) by roller bearing clip (9), described change gear (4) is connected by meshing transmission with described main application of force gear (5), described change gear (4) is coaxially connected with secondary transmission gear (3), be provided with the one-level transmission gear (2) with described secondary transmission gear (3) engaged transmission on described flat board (6), described one-level transmission gear (2) is connected with rocking bar (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102039099A CN101846561B (en) | 2010-06-18 | 2010-06-18 | Mollisol area friction pile load transference curve tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102039099A CN101846561B (en) | 2010-06-18 | 2010-06-18 | Mollisol area friction pile load transference curve tester |
Publications (2)
| Publication Number | Publication Date |
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| CN101846561A true CN101846561A (en) | 2010-09-29 |
| CN101846561B CN101846561B (en) | 2011-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102039099A Expired - Fee Related CN101846561B (en) | 2010-06-18 | 2010-06-18 | Mollisol area friction pile load transference curve tester |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564676A (en) * | 2012-02-12 | 2012-07-11 | 吉林大学 | Penetrating-stretching type pore water pressure measurement device and measurement method thereof |
| CN107023042A (en) * | 2017-04-11 | 2017-08-08 | 青岛理工大学 | Dynamic loading device for pile bearing high-rise structure model test |
| CN109750693A (en) * | 2019-03-26 | 2019-05-14 | 青岛理工大学 | Offshore bearing platform pile torsion test device |
| CN111928982A (en) * | 2020-07-27 | 2020-11-13 | 山东光安智能科技有限公司 | Mining visual fiber grating wide-range anchor rod cable stress monitoring sensor |
| CN113514184A (en) * | 2021-09-14 | 2021-10-19 | 四川交达预应力工程检测科技有限公司 | Anchoring force detection device and measurement calculation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2504676A1 (en) * | 1981-04-23 | 1982-10-29 | Bretagne Atel Chantiers | CHARGE CONTROL DEVICE ON THE BATTERIES OF A SELF-LIFTING PLATFORM |
| JPH10153497A (en) * | 1996-11-21 | 1998-06-09 | Mitsubishi Heavy Ind Ltd | Foundation pile bearing power evaluation system |
| US6098447A (en) * | 1998-10-16 | 2000-08-08 | Frederick Engineering Co. | Dynamic force measuring instrument for foundation and casing |
| US6311567B1 (en) * | 1997-03-14 | 2001-11-06 | Kvaerner Cementation Foundation Ltd. | Automatic static load testing for piles |
| EP1323869A1 (en) * | 2001-12-27 | 2003-07-02 | Mitsubishi Denki Kabushiki Kaisha | Dynamic test method for bearing capacity of piles |
| CN101638902A (en) * | 2009-08-20 | 2010-02-03 | 高飞 | Method for measuring pile shaft internal force and cross section displacement in vertical dead-load test of foundation pile |
| CN201713840U (en) * | 2010-06-18 | 2011-01-19 | 长沙理工大学 | Tester for load transfer curve of friction pile in soft soil areas |
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2010
- 2010-06-18 CN CN2010102039099A patent/CN101846561B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2504676A1 (en) * | 1981-04-23 | 1982-10-29 | Bretagne Atel Chantiers | CHARGE CONTROL DEVICE ON THE BATTERIES OF A SELF-LIFTING PLATFORM |
| JPH10153497A (en) * | 1996-11-21 | 1998-06-09 | Mitsubishi Heavy Ind Ltd | Foundation pile bearing power evaluation system |
| US6311567B1 (en) * | 1997-03-14 | 2001-11-06 | Kvaerner Cementation Foundation Ltd. | Automatic static load testing for piles |
| US6098447A (en) * | 1998-10-16 | 2000-08-08 | Frederick Engineering Co. | Dynamic force measuring instrument for foundation and casing |
| EP1323869A1 (en) * | 2001-12-27 | 2003-07-02 | Mitsubishi Denki Kabushiki Kaisha | Dynamic test method for bearing capacity of piles |
| CN101638902A (en) * | 2009-08-20 | 2010-02-03 | 高飞 | Method for measuring pile shaft internal force and cross section displacement in vertical dead-load test of foundation pile |
| CN201713840U (en) * | 2010-06-18 | 2011-01-19 | 长沙理工大学 | Tester for load transfer curve of friction pile in soft soil areas |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564676A (en) * | 2012-02-12 | 2012-07-11 | 吉林大学 | Penetrating-stretching type pore water pressure measurement device and measurement method thereof |
| CN102564676B (en) * | 2012-02-12 | 2014-08-13 | 吉林大学 | Penetrating-stretching type pore water pressure measurement device and measurement method thereof |
| CN107023042A (en) * | 2017-04-11 | 2017-08-08 | 青岛理工大学 | Dynamic loading device for pile bearing high-rise structure model test |
| CN107023042B (en) * | 2017-04-11 | 2022-06-28 | 青岛理工大学 | Dynamic loading device for pile bearing towering structure model test |
| CN109750693A (en) * | 2019-03-26 | 2019-05-14 | 青岛理工大学 | Offshore bearing platform pile torsion test device |
| CN111928982A (en) * | 2020-07-27 | 2020-11-13 | 山东光安智能科技有限公司 | Mining visual fiber grating wide-range anchor rod cable stress monitoring sensor |
| CN111928982B (en) * | 2020-07-27 | 2021-09-10 | 山东光安智能科技有限公司 | Mining visual fiber grating wide-range anchor rod cable stress monitoring sensor |
| CN113514184A (en) * | 2021-09-14 | 2021-10-19 | 四川交达预应力工程检测科技有限公司 | Anchoring force detection device and measurement calculation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101846561B (en) | 2011-07-20 |
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