CN201569603U - Connecting clamp for geogrid field pull-out test - Google Patents
Connecting clamp for geogrid field pull-out test Download PDFInfo
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- CN201569603U CN201569603U CN200920082805XU CN200920082805U CN201569603U CN 201569603 U CN201569603 U CN 201569603U CN 200920082805X U CN200920082805X U CN 200920082805XU CN 200920082805 U CN200920082805 U CN 200920082805U CN 201569603 U CN201569603 U CN 201569603U
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- pull
- gsz
- geogrid
- out test
- top board
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Abstract
The utility model discloses a connecting clamp for a geogrid field pull-out test, which comprises a geogrid, a clamping device and a pull-out device, wherein the clamping device and the pull-out device are in disassemble connection with the geogrid; the clamping device comprises an upper pressing plate, a lower pressing plate and a base plate; the upper pressing plate, the lower pressing plate and the base plate are all uniformly provided with open holes along the length direction; the pull-out device comprises a transverse rod, a pull rod, a jack and a counterforce device; one end of the pull rod is fixed at the middle part of the transverse rod; the transverse rod is arranged inside the bending part formed after the geogrid is overturned and is vertical to the geogrid; the pull rod passes through the counterforce device; and the jack is sleeved outside the counterforce device on the pull rod. The connecting clamp for the geogrid field pull-out test increases the friction coefficient between the clamp and the geogrid, also does not cause damage to the surface of the geogrid, selects simple materials, does not has high requirement for precision and has convenient processing production. In the test process, the geogrid also does not generate slippage. The connecting clamp of the utility model is suitable for the construction field pull-out test.
Description
Technical field
The utility model relates to the on-the-spot pull-out test jockey of GSZ.
Background technology
The muscle body material that is used for reinforced earth technology is broadly divided into two classes, and a class is the bigger rigid rib material of rigidity, and a class is the less flexible muscle material of rigidity, as various geotextiles and GSZ.Wherein GSZ is a kind of main geosynthetics, compares with other geosynthetics, has particular performances and effect.
After engineering site laying GSZ is finished, whether design parameters such as the friction factor between GSZ and the filler, cohesive strength, angle of internal friction reach requirement, need simulate pull-out test by engineering site, the value of thrust that obtains according to pull-out test, calculate above-mentioned design parameter value, verify the laying quality of GSZ with this.The principle of pull-out test is rubbing action, by applying normal stress, make between the GSZ and the soil body and combine closely, thereby utilize the stiction opposing external force on the cross section each other, one end of GSZ is exposed at soil body outside, apply horizontal pulling capacity and simulate the relative motion of the soil body and grid face, surrender, be pulled out or break up to grid.The purpose of pull-out test is the interfacial property of research soil and geosynthetics.
And current national codes does not still have clear and definite regulation just at the inspection parameter and the method for the quality of GSZ own to the method for inspection of engineering construction effect.For this reason, need design the GSZ anchor clamps that a cover satisfies the engineering site testing requirements.Because the GSZ such as the polypropylene GSZ smooth surface that have if the excessive grid surface that easily causes of clamping force is impaired, in the damaged part fracture, reduce the intensity of grid in the drawing process; If clamp power is too small, easily produce slippage in the drawing, influence normally carrying out of pull-out test.
The utility model content
The purpose of this utility model provides the on-the-spot pull-out test jockey of a kind of GSZ, can not cause damage to GSZ in drawing process, and GSZ can not produce slippage yet.
The technical scheme that the utility model adopted is:
The on-the-spot pull-out test jockey of GSZ comprises GSZ, also comprises clamp device and draw-off gear, and described clamp device and draw-off gear and GSZ removably connect.
Described clamp device comprises top board, lower platen and backing plate, and top board, lower platen and backing plate evenly are provided with perforate along its length.
Described top board, lower platen and backing plate along its length every meter to be provided with the perforate number be 4-6.
Described perforate is provided with the bolt that matches, and bolt is provided with the nut that matches.
Be provided with pad between described nut and top board or the lower platen.
Described top board, lower platen and backing plate are the hard plank.
Described draw-off gear comprises cross bar, pull bar, lifting jack and counterforce device, pull bar one end is fixed on the cross bar middle part, the sweep that cross bar places GSZ turnover back to form is inboard and vertical with GSZ, counterforce device is provided with the hole that is complementary with pull bar, pull bar passes counterforce device, and lifting jack is socketed on the outside of counterforce device on the pull bar.
Described pull bar is a screw-thread steel, and cross bar is a round steel, and counterforce device is a reaction beam.
Being connected between GSZ and the lifting jack is the key of pull-out test, and whether jockey rationally directly influences the reliability of pull-out test data again, and used lifting jack is the punching lifting jack.Use lignum vitae board clamp helps increasing the friction factor between anchor clamps and the GSZ in clamping process, do not cause the GSZ surface impaired again simultaneously.
The beneficial effects of the utility model are:
Use the utility model increases the friction factor between anchor clamps and the GSZ in clamping process, do not cause the GSZ surface impaired again simultaneously, and the material of selecting for use is simple, and accuracy requirement is not high, and processing and fabricating is convenient; Use the utility model both GSZ not to be caused damage in process of the test, GSZ does not produce slippage yet, and is respond well through verification experimental verification; Be applicable to the engineering site pull-out test; Be not only applicable to the on-the-spot pull-out test of GSZ, be applicable to the on-the-spot pull-out test of other flexible muscle materials yet.
Description of drawings
Fig. 1 is the utility model embodiment site test vertical view;
Fig. 2 is the utility model clamp device sectional view.
The corresponding component names of mark among the figure: 1-GSZ; The 2-top board; The 3-lower platen; The 4-backing plate; The 5-perforate; The 6-bolt; The 7-nut; The 8-pad; The 9-cross bar; 10-pole; The 11-lifting jack; The 12-counterforce device.
Embodiment
As depicted in figs. 1 and 2, the utility model comprises GSZ 1, also comprises clamp device and draw-off gear, and described clamp device and draw-off gear and GSZ 1 removably connect.
Wherein clamp device comprises top board 2, lower platen 3 and backing plate 4, and top board 2, lower platen 3 and backing plate 4 evenly are provided with perforate 5 along its length, along its length every meter to be provided with perforate 5 numbers be 6, six perforates are corresponding.Perforate 5 is provided with the bolt 6 that matches, and bolt 6 is provided with the nut 7 that matches.Be provided with pad 8 between nut 7 and top board 2 or the lower platen 3.During test GSZ 1 is turned down, GSZ and following GSZ in the formation, sweep is positioned at soil body outside, and remainder is covered by the soil body.Backing plate 4 is placed between GSZ and the following GSZ, then top board 2 is placed on above the GSZ, lower platen 3 is placed on down below the GSZ, top board 2, lower platen 3 and backing plate 4 stack alignment, the outside of top board 2 and lower platen 3 is distributed with pad 8, and this pad 8 can be a steel plate washer.Top board 2, lower platen 3 and backing plate 4 are the hard plank.Bolt 6 passes top board 2, lower platen 3 and backing plate 4 corresponding perforates 5, and nut 7 is enclosed within bolt 6 outsides, pad 8 tops, and fastening nut 7 is fixing with GSZ 1.
Draw-off gear comprises cross bar 9, pull bar 10, lifting jack 11 and counterforce device 12, pull bar 10 1 ends are weldingly fixed on cross bar 9 middle parts, cross bar 9 is socketed in the sweep inboard that GSZ 1 turnover back forms, pull bar 10 passes counterforce device 12, and lifting jack 11 is socketed on the outside of counterforce device 12 on the pull bar 10.Pull bar 10 can be screw-thread steel, and cross bar 9 can be round steel, and counterforce device 12 can be reaction beam, and lifting jack 11 is the punching lifting jack.
Claims (6)
1. the on-the-spot pull-out test jockey of GSZ comprises GSZ (1), it is characterized in that also comprise clamp device and draw-off gear, described clamp device and draw-off gear and GSZ (1) removably connect; Described clamp device comprises top board (2), lower platen (3) and backing plate (4), and top board (2), lower platen (3) and backing plate (4) evenly are provided with perforate (5) along its length; Described draw-off gear comprises cross bar (9), pull bar (10), lifting jack (11) and counterforce device (12), pull bar (10) one ends are fixed on cross bar (9) middle part, the sweep that cross bar (9) places GSZ (1) turnover back to form is inboard and vertical with GSZ (1), counterforce device (12) is provided with the hole that is complementary with pull bar (10), pull bar (10) passes counterforce device (12), and lifting jack (11) is socketed on the outside that pull bar (10) is gone up counterforce device (12).
2. the on-the-spot pull-out test jockey of GSZ according to claim 1 is characterized in that, described top board (2), lower platen (3) and backing plate (4) along its length every meter to be provided with perforate (5) number be that 4-6 is individual.
3. the on-the-spot pull-out test jockey of GSZ according to claim 2 is characterized in that described perforate (5) is provided with the bolt (6) that matches, and bolt (6) is provided with the nut (7) that matches.
4. the on-the-spot pull-out test jockey of GSZ according to claim 3 is characterized in that, is provided with pad (8) between described nut (7) and top board (2) or the lower platen (3).
5. the on-the-spot pull-out test jockey of GSZ according to claim 1 and 2 is characterized in that described top board (2), lower platen (3) and backing plate (4) are the hard plank.
6. the on-the-spot pull-out test jockey of GSZ according to claim 1 is characterized in that described pull bar (10) is a screw-thread steel, and cross bar (9) is a round steel, and counterforce device (12) is a reaction beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920082805XU CN201569603U (en) | 2009-07-22 | 2009-07-22 | Connecting clamp for geogrid field pull-out test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920082805XU CN201569603U (en) | 2009-07-22 | 2009-07-22 | Connecting clamp for geogrid field pull-out test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201569603U true CN201569603U (en) | 2010-09-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920082805XU Expired - Lifetime CN201569603U (en) | 2009-07-22 | 2009-07-22 | Connecting clamp for geogrid field pull-out test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201569603U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986129A (en) * | 2010-06-22 | 2011-03-16 | 交通运输部公路科学研究所 | Hydraulic wide geogrid clamp |
| CN104062230A (en) * | 2014-07-03 | 2014-09-24 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Concrete carbonized protective layer bonding strength detector |
| CN104099919A (en) * | 2013-04-07 | 2014-10-15 | 唐善祥 | Reinforced earth connection device |
| CN105784465A (en) * | 2016-03-30 | 2016-07-20 | 广西众诚工程质量检测有限公司 | Square supporting device for pull-out test |
| CN107091774A (en) * | 2017-05-22 | 2017-08-25 | 中国农业大学 | A kind of GSZ drawing fixture and its implementation |
| CN108225944A (en) * | 2018-01-22 | 2018-06-29 | 西南交通大学 | A kind of rubble railway ballast direct shear test instrument |
| CN108844827A (en) * | 2018-05-25 | 2018-11-20 | 武汉理工大学 | Multifunctional earth grid pull-out test device based on actual condition |
| CN109352971A (en) * | 2018-10-11 | 2019-02-19 | 安徽徽风新型合成材料有限公司 | A kind of TGXG production stretching device and its working method |
| CN109975204A (en) * | 2019-05-08 | 2019-07-05 | 中交隧道工程局有限公司 | A kind of high mountain artificial snow-making pipeline testing device for friction coefficient and its method |
-
2009
- 2009-07-22 CN CN200920082805XU patent/CN201569603U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986129A (en) * | 2010-06-22 | 2011-03-16 | 交通运输部公路科学研究所 | Hydraulic wide geogrid clamp |
| CN101986129B (en) * | 2010-06-22 | 2013-09-11 | 交通运输部公路科学研究所 | Hydraulic wide geogrid clamp |
| CN104099919A (en) * | 2013-04-07 | 2014-10-15 | 唐善祥 | Reinforced earth connection device |
| CN104062230A (en) * | 2014-07-03 | 2014-09-24 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Concrete carbonized protective layer bonding strength detector |
| CN105784465A (en) * | 2016-03-30 | 2016-07-20 | 广西众诚工程质量检测有限公司 | Square supporting device for pull-out test |
| CN107091774A (en) * | 2017-05-22 | 2017-08-25 | 中国农业大学 | A kind of GSZ drawing fixture and its implementation |
| CN107091774B (en) * | 2017-05-22 | 2023-09-15 | 中国农业大学 | Geogrid drawing clamp and implementation method thereof |
| CN108225944A (en) * | 2018-01-22 | 2018-06-29 | 西南交通大学 | A kind of rubble railway ballast direct shear test instrument |
| CN108844827A (en) * | 2018-05-25 | 2018-11-20 | 武汉理工大学 | Multifunctional earth grid pull-out test device based on actual condition |
| CN109352971A (en) * | 2018-10-11 | 2019-02-19 | 安徽徽风新型合成材料有限公司 | A kind of TGXG production stretching device and its working method |
| CN109352971B (en) * | 2018-10-11 | 2020-07-28 | 安徽徽风新型合成材料有限公司 | Stretching device for geogrid production and working method thereof |
| CN109975204A (en) * | 2019-05-08 | 2019-07-05 | 中交隧道工程局有限公司 | A kind of high mountain artificial snow-making pipeline testing device for friction coefficient and its method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Panzhihua nineteen smelting survey design & Research Institute Co Ltd Assignor: MCC Shijiu Construction Co., Ltd. Contract record no.: 2010510000120 Denomination of utility model: Connecting clamp for geogrid field pull-out test Granted publication date: 20100901 License type: Exclusive License Record date: 20101117 |
|
| ASS | Succession or assignment of patent right |
Owner name: PANZHIHUA 19TH METALLURGICAL SURVEYING DESIGN INST Free format text: FORMER OWNER: MCC SHIJIU CONSTRUCTION CO., LTD. Effective date: 20110329 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 617000 NO. 350, RENMIN STREET, PANZHIHUA CITY, SICHUAN PROVINCE TO: 617000 NO. 16, GAOFENG ROAD, EAST DISTRICT, PANZHIHUA CITY, SICHUAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110329 Address after: 617000 Panzhihua Province, East Road, Sichuan, No. 16 Patentee after: Panzhihua nineteen smelting survey design & Research Institute Co Ltd Address before: 617000 No. 350 Renmin Street, Sichuan, Panzhihua Patentee before: MCC Shijiu Construction Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |
|
| CX01 | Expiry of patent term |