CN103033414A - Vane shear test loading device - Google Patents
Vane shear test loading device Download PDFInfo
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- CN103033414A CN103033414A CN2012105762500A CN201210576250A CN103033414A CN 103033414 A CN103033414 A CN 103033414A CN 2012105762500 A CN2012105762500 A CN 2012105762500A CN 201210576250 A CN201210576250 A CN 201210576250A CN 103033414 A CN103033414 A CN 103033414A
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a vane shear test loading device. A dial is rotationally fixed at the upper part of a loading tray of the device by a guide shaft hole; a guide wheel and a loading wheel are rotationally fixed in the middle of the loading tray; one end of a chain is fixed on the loading wheel by a shaft pin and passes through the guide wheel anticlockwise, and the other end thereof is connected with the dial by a shaft pin; a worm and gear provided with a rotating hand wheel is fixed on one side of the loading wheel; eight pin holes are formed at equal intervals in the dial; a force measuring steel ring and a dial indicator are arranged on a dynamometer support; and the force measuring steel ring is connected with the guide wheel by adjustable pressing plates. The vane shear test loading device has the benefits that the vane shear test loading device can conduct test angle adjustment according to variations of experimental conditions, ensure accuracy of experimental data, and accurately measure the data within a range of 0-120kPa. The device is more suitable for the field of maritime engineering investigation, particularly for water engineering geological investigation projects with shipborne survey platforms.
Description
Technical field
The present invention relates to a kind of engineering geological investigation in-situ test equipment that is applied to waters, land-based area, the vane shear test charger that can measure the shearing strength of soft clay.
Background technology
In the water areas project projects such as harbour, bridge, man-made island, the shearing strength of soft soil foundation is a very important engineering objective.Surveying instrument to this index has plurality of devices at present both at home and abroad, but most equipment exist restricted application, measured value larger problem affected by environment in actual applications, particularly be subjected under the larger water environment of wave, water currents, can only current ease up or test during slack tide limit, cause work efficiency on the low side and the experimental data error is larger.
Summary of the invention
The purpose of this invention is to provide a kind of vane shear test charger, can effectively reduce test error when particularly constructing in the marine site, when in process of the test, being subject to extraneous factor and affecting, affect error and drop to minimum by the instrument self-regulation is made.
For achieving the above object, the technical solution used in the present invention provides a kind of vane shear test charger, this device includes the loading dish, angle sheave, the loading wheel, index dial, the guiding axis hole, rotate handwheel, the dynamometer support, the dynamometry steel loop, worm and gear, chain, pin-and-hole, wherein: the top of described loading dish is by the rotating index dial that is fixed with of guiding axis hole, there is angle sheave at rotating loading dish 1 middle part that is fixed on, the loading wheel, described chain one end is fixed on the loading wheel by pivot pin, pass counterclockwise angle sheave, the other end is connected with index dial by pivot pin; One side of loading wheel is fixed with the worm and gear that band rotates handwheel, rotates handwheel and rotates through worm and gear drive loading wheel; Be interval with eight pin-and-holes in that index dial is first-class, by register pin locking chain, the position by adjusting chain pin-and-hole on index dial can the adjusting test angle; Be provided with dynamometry steel loop and dial gauge at the dynamometer support, the dynamometry steel loop is connected with angle sheave by adjustable pressing plate.
Effect of the present invention is that the charger with vane shear test is connected by chain, has changed the mode that the legacy equipment gear connects, and makes equipment can test angular adjustment according to the variation of experiment condition in experimentation, guarantee experimental data accurately.The index dial that has strengthened makes more stable being applied on the test soil body of shearing moment; This equipment can break away from experiment porch waterborne, can with the sleeve pipe separate connection, guaranteeing can to carry out the vane-shear in-situ test at the Soft Soil Layer of different origins under the condition of code requirement, in 0 ~ 120 kPa of scope, can accurately measure data.This device is more suitable for engineering investigation field, marine site, adopts especially the boat-carrying survey platform to carry out the water areas project geological prospecting project.
Description of drawings
Fig. 1 is vane shear test charger fundamental diagram of the present invention;
Fig. 2 is vane shear test charger operation chart of the present invention.
Among the figure:
1, loading dish 2, angle sheave 3, loading wheel 4, index dial 5, guiding axis hole
6, handwheel 7, dynamometer support 8, dynamometry steel loop 9, worm and gear 10, chain
11, pin-and-hole 12, guide pole 13, sleeve pipe 14, drilling rod 15, cross wrench
Embodiment
Further specify below in conjunction with the structure of accompanying drawing to vane shear test charger of the present invention.
Vane shear test charger design philosophy of the present invention is that the index dial on the loading dish is separated with the loading wheel, is connected with chain by angle sheave.When causing the inclination in the locating sleeve generation certain limit when being subject to extraneous factor impact in the process of the test, the angle of inclination increases the moment that acts on the test soil body, angle sheave can be adjusted the connection angle of dynamometer, index dial automatically, in process of the test, can effectively control the shearing inclination of the soil body, when the cross wrench insertion soil body fails effectively to mesh, can be by the tie point of adjusting chain and index dial, thus the accuracy of shearing inclination guaranteed.When testing site during because of current or wave effect run-off the straight, angle sheave can be regulated index dial and dynamometer automatically under the drive of chain closure, effectively eliminated the additional moment that brings because of inclination to the impact of experimental data.Angle sheave and dial gauge all are contained on the dynamometer support, and can dismantle separately, and be easy, practical in operation, is convenient to safeguard.Index dial has adopted the larger wheeled disk of diameter, at index dial eight pin-and-holes 11 is arranged, and can the chain of driving torque be fixed in different angles.When experimental enviroment changes, by changing the pilot hole of chain on index dial, can guarantee that the shearing inclination of the soil body all satisfies testing requirements.
As shown in Figure 1, vane shear test charger of the present invention, this device include loading dish 1, angle sheave 2, loading wheel 3, index dial 4, guiding axis hole 5, rotate handwheel 6, dynamometer support 7, dynamometry steel loop 8, worm and gear 9, chain 10, pin-and-hole 11.The top of described loading dish 1 is by the guiding axis hole 5 rotating index dials 4 that are fixed with, rotating angle sheave 2, the loading wheel 3 of being fixed with at loading dish 1 middle part, described chain 10 1 ends are fixed on the loading wheel 3 by pivot pin, pass counterclockwise angle sheave 2, the other end is connected with index dial 4 by pivot pin, and the diameter of described index dial 4 is 450 ~ 500mm.
One side of loading wheel 3 is fixed with the worm and gear 9 that band rotates handwheel 6, rotates handwheel 6 and rotates through worm and gear 9 drive loading wheels 3; Be interval with eight pin-and-holes 11 in that index dial 4 is first-class, by register pin locking chain 10, the position by adjusting chain 10 pin-and-hole 11 on index dial 4 can the adjusting test angle; Be provided with dynamometry steel loop 8 and dial gauge at dynamometer support 7, dynamometry steel loop 8 is connected with angle sheave 2 by adjustable pressing plate.By measuring the deflection of the dynamometry steel loop 8 that is connected with angle sheave 2, can calculate the moment of resistance of the test soil body.
Described dynamometry steel loop 8 one ends are installed on the dynamometer support 7, use fastening nuts; The other end is fastening and are connected connection with angle sheave by two block pressur plates.When off-test or dynamometry steel loop 8 need to be safeguarded, can unclamp the bolt of an end nut and other end pressing plate, the dynamometry steel loop is taken off.
As shown in Figure 2, vane shear test loading system function of the present invention is achieved in that
During described vane shear test loading system experiment beginning, at first with test soil layer at the bottom of the hand-hole under cross wrench, the drilling rod, afterwards guide pole 12, vane shear test charger are connected with drilling rod 14, sleeve pipe 13, carry out the front preliminary work of test.Chain 10 1 ends are fixed on the loading wheel 3 by pivot pin, pass counterclockwise angle sheave 2, the other end is connected connection by pivot pin equally with index dial.On dynamometer support 7, dynamometry steel loop 8 and dial gauge are installed and fixed, shake afterburning handwheel 6 upper handles that rotate, carry out the vane shear test in-situ test by the Experimental Standardization requirement.
When running into the external environmental interference such as current, wave in the middle of experiment, large, the unsettled situation of vibration frequency can occur in the dial gauge reading, can continue test as long as chain reorientated at index dial; Guide runner under the angle sheave can according to the vertical extent correction corresponding angle of sleeve pipe, be avoided because of the additional moment of bore inclining to the steel loop generation of remaining silent, the accuracy of warranty test data.
Vane shear test charger of the present invention can independently be installed on the sleeve pipe of testing site, by connecting the cross wrench 15 that inserts in the soft clay, with the given pace rotation, through measuring the deflection of steel loop on the loading system, measure the moment of resistance of soil, converse soil shear strength.The dynamometry steel loop that adopts has the large advantage of regime of elastic deformation, can measure softly mould, cohesive soil and the silt thin layer of plastic state, it is large to measure numerical range.
Vane shear test charger of the present invention rotates handwheel 6 by shaking, worm and gear 9 is produced moment of torsion, the moment of torsion that produces is applied on the index dial 4 by chain 10 transmissions, and the size of moment of torsion is by the dial gauge dynamometer reading on the angle sheave that is connected with chain, the dynamometer support 7.Because the enlarged diameter of the index dial of this complete equipment can make moment of torsion be applied to uniformly on the test soil body detrusion angle that can also measure more accurately the soil body.This complete equipment can also break away from hull under water environment, independently is connected with sleeve pipe, eliminates the impact of the unfavorable factors such as wave, current.
Claims (3)
1. vane shear test charger, this device includes loading dish (1), angle sheave (2), loading wheel (3), index dial (4), guiding axis hole (5), rotate handwheel (6), dynamometer support (7), dynamometry steel loop (8), worm and gear (9), chain (10), pin-and-hole (11), it is characterized in that: the top of described loading dish (1) is by the rotating index dial (4) that is fixed with of guiding axis hole (5), at the rotating angle sheave (2) that is fixed with in loading dish (1) middle part, loading wheel (3), described chain (10) one ends are fixed on the loading wheel (3) by pivot pin, and passing counterclockwise angle sheave (2), the other end is connected with index dial (4) by pivot pin; One side of loading wheel (3) is fixed with the worm and gear (9) that band rotates handwheel (6), rotates handwheel (6) and rotates through worm and gear (9) drive loading wheel (3); At first-class eight pin-and-holes (11) that are interval with of index dial (4), by register pin locking chain (10), can the adjusting test angle in the position of the upper pin-and-hole (11) of index dial (4) by adjusting chain (10); Be provided with dynamometry steel loop (8) and dial gauge at dynamometer support (7), dynamometry steel loop (8) is connected with angle sheave (2) by adjustable pressing plate.
2. vane shear test charger according to claim 1, it is characterized in that: described dynamometry steel loop (8) one ends are installed on the dynamometer support (7), pass through fastening nuts; The other end is fastening and be connected with angle sheave (2) by two block pressur plates, when off-test or dynamometry steel loop need to be safeguarded, can unclamp the bolt of an end nut and other end pressing plate, and the dynamometry steel loop is taken off.
3. vane shear test charger according to claim 1, it is characterized in that: the diameter of described index dial (4) is 450 ~ 500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105762500A CN103033414A (en) | 2012-12-26 | 2012-12-26 | Vane shear test loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105762500A CN103033414A (en) | 2012-12-26 | 2012-12-26 | Vane shear test loading device |
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| CN103033414A true CN103033414A (en) | 2013-04-10 |
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| CN2012105762500A Pending CN103033414A (en) | 2012-12-26 | 2012-12-26 | Vane shear test loading device |
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| CN (1) | CN103033414A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842085A (en) * | 2016-05-09 | 2016-08-10 | 温州大学瓯江学院 | Improved in-situ vane shearing method detection method and detection device |
| CN108918819A (en) * | 2018-05-22 | 2018-11-30 | 青岛理工大学 | A kind of multi-parameter micro-test device and its application method for simulating drying and watering cycle |
| CN109056689A (en) * | 2018-09-07 | 2018-12-21 | 中铁十二局集团有限公司 | A kind of ground loaded densification degree detector |
| CN113686648A (en) * | 2021-07-15 | 2021-11-23 | 长沙理工大学 | In-situ shearing instrument |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007255012A (en) * | 2006-03-22 | 2007-10-04 | Giotech Gijutsushi Jimusho:Kk | Vane shear testing device of ground in situ |
| US20120285256A1 (en) * | 2011-05-12 | 2012-11-15 | The Goverment Of The United States, As Represented By The Secretary Of The Na | High-capacity wide-range variable rotational rate vane testing device |
| CN203025053U (en) * | 2013-04-18 | 2013-06-26 | 中交第一航务工程勘察设计院有限公司 | Vane shear test loading device |
-
2012
- 2012-12-26 CN CN2012105762500A patent/CN103033414A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007255012A (en) * | 2006-03-22 | 2007-10-04 | Giotech Gijutsushi Jimusho:Kk | Vane shear testing device of ground in situ |
| US20120285256A1 (en) * | 2011-05-12 | 2012-11-15 | The Goverment Of The United States, As Represented By The Secretary Of The Na | High-capacity wide-range variable rotational rate vane testing device |
| CN203025053U (en) * | 2013-04-18 | 2013-06-26 | 中交第一航务工程勘察设计院有限公司 | Vane shear test loading device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842085A (en) * | 2016-05-09 | 2016-08-10 | 温州大学瓯江学院 | Improved in-situ vane shearing method detection method and detection device |
| CN108918819A (en) * | 2018-05-22 | 2018-11-30 | 青岛理工大学 | A kind of multi-parameter micro-test device and its application method for simulating drying and watering cycle |
| CN108918819B (en) * | 2018-05-22 | 2020-09-22 | 青岛理工大学 | Multi-parameter micro test device for simulating dry-wet cycle and use method thereof |
| CN109056689A (en) * | 2018-09-07 | 2018-12-21 | 中铁十二局集团有限公司 | A kind of ground loaded densification degree detector |
| CN113686648A (en) * | 2021-07-15 | 2021-11-23 | 长沙理工大学 | In-situ shearing instrument |
| CN113686648B (en) * | 2021-07-15 | 2024-04-05 | 长沙理工大学 | In-situ shearing instrument |
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Application publication date: 20130410 |