CN2286202Y - Field CBR test instrument - Google Patents
Field CBR test instrument Download PDFInfo
- Publication number
- CN2286202Y CN2286202Y CN 97201631 CN97201631U CN2286202Y CN 2286202 Y CN2286202 Y CN 2286202Y CN 97201631 CN97201631 CN 97201631 CN 97201631 U CN97201631 U CN 97201631U CN 2286202 Y CN2286202 Y CN 2286202Y
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- CN
- China
- Prior art keywords
- force
- cbr
- force application
- electronic sensor
- injection
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- Expired - Fee Related
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to a field CBR measurer, comprising a loading part, a force application device, a force application measuring device, a penetration rod and a penetration depth measuring device, wherein, the loading part supplies counter force by a counter force frame through the counter force beam of the support of a ground anchor set, and the ground anchor set is composed of more than three roots of ground anchors. The force application device adopts a force application gear case fixed under the counter force frame; the force application measuring device adopts an electronic force measuring instrument connected with an electronic sensor, the upper end of the electronic sensor is fixed on the lower part of the force output shaft of the force application gear case, a convex measuring head arranged on the lower end of the electronic sensor is positioned in a drop pit, and the drop pit is arranged on the upper end of the penetration rod. The utility model has the advantages of high measuring precision, simple operation and strong applicability; the utility model is suitable for situations requiring the measurement of the value of CBR in each stage of the construction and the survey of an airport, a parking apron and a road.
Description
The utility model relates to a kind of CBR tester, especially a kind of open-air CBR tester, its dependent territory wood field of test instrument.
CBR is the english abbreviation of California Bearing Ratio (California Bearing Rate), is that the parameter of soil matrix or road base supporting capacity is represented, in airport, road construction, it is one of expression soil matrix layer characteristic parameter commonly used.The measurement of its value is big or small a series of data computation gained of added power when leaning on the certain depth of a piston injection soil layer.Japan building test Co., Ltd. discloses a kind of CBR tester, and it is made of the scale of loading, jack, the ring of measuring one's own ability, injection piston and measurement piston depth of penetration, and its certainty of measurement is low, is difficult to operation and bad adaptability; At China's like product not at present.
The purpose of this utility model provides the good a kind of open-air CBR tester of a kind of certainty of measurement height, easy operating and compliance.
The utility model comprises loading, augmentor, add force measuring device, injection bar and depth of penetration measurement mechanism, the depth of penetration measurement mechanism is by the dial gage support, dial gage and guiding workbench constitute, the dial gage support is fixed on the injection bar, dial gage one end links to each other with the dial gage support, the other end be placed on ground guiding workbench and link to each other, its characteristics are: by providing counter-force by the reaction beam that comprises the earth anchor collection support that three above earth anchors are formed, the effect of earth anchor collection is both to have prevented loading by a reaction frame in loading, augmentor and add force measuring device and directly be pressed in to cause on the injection bar to measure and inaccurately produce load by jack-up because of reinforcing when preventing to measure again; Augmentor adopts afterburning gear-box, and afterburning gear-box is fixed under the reaction frame, adopts afterburning gear-box both can satisfy desired even reinforcing when measuring, and can satisfy again can be manually afterburning when unregulated power; Add force measuring device and adopt the electronics dynamometer that connects electronic sensor, the electronic sensor upper end is fixed under the power output shaft of afterburning gear-box, and the convex gage outfit of lower end is positioned at the pit of injection bar upper end, and it can improve afterburning certainty of measurement.
Constitute reaction frame and four reaction beam loose joints that earth anchor supports of loading, reaction frame adopts rectangle, and this rectangle rack is parallel to the ground, and the lateral length of rectangle is greater than the lateral separation of reaction beam, and longitudinal length is less than the fore-and-aft distance of reaction beam.Reaction frame can be done horizontal and vertical moving relative to reaction beam like this, promptly need not move any earth anchor, just can carry out the multiple spot CBR test on ground.
Above-mentioned injection bar is a circular bar shape, the diameter of its lower end injection head is greater than the diameter of shaft, on the ring-shaped platform of injection head and shaft junction, place the gauge head of a benkelman beams deflectometer, and benkelman beams deflectometer is positioned at from survey mark place far away, the sinking that the sinking of survey mark causes the guiding workbench that links to each other with dial gage thereby this had both been avoided when measuring exerts an influence to the measurement of depth of penetration, avoid the low shortcoming of certainty of measurement of dial gage again, improved the certainty of measurement of depth of penetration.
When measuring depth of penetration and afterburning size between the two after the relation, just can calculate CBS value herein.
This Instrument measuring precision height, simple to operate, compliance is strong, is applicable to the situation that needs to measure the CBR value in each stage of the prospecting of airport, apron and road and construction.
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 is a structural representation of the present utility model, and Fig. 2 is the vertical view of Fig. 1.
Four earth anchors (4) are supporting reaction beam (12), rectangle reaction frame (1) is movably connected under the reaction beam (12) also parallel to the ground, the lateral length of this rectangle reaction frame (1) is greater than the lateral separation of reaction beam (12), longitudinal length is less than the fore-and-aft distance of reaction beam (12), need not move the position of any earth anchor (4) like this, only need by flexibly connecting the relative position between mobile reaction frame (1) and the reaction beam (12), just can carry out the multiple spot CBR test on ground.Afterburning gear-box (2) is fixed under the reaction frame (1) by bolt (13), electronic sensor (5) upper end is fixed under the power output shaft of afterburning gear-box (2), the convex gage outfit of lower end is positioned at the pit of injection bar (7) upper end, the connector (6) of electronic sensor (5) links to each other with the electronics dynamometer by lead, dynamometer and sensor all adopt 100KN's, the lower end of injection bar (7) is placed on the A of measured point, rotate the handle (3) of afterburning gear-box (2) like this, it is evenly afterburning to injection bar (7) by the convex gage outfit that its power output shaft band electronic sensor (5), make in the injection injection measured medium of injection bar (7), the electronics dynamometer by electronic sensor (5) measure afterburning size.Depth of penetration is linked to each other with dial gage support (8) on being fixed on injection bar (7) by an end, the other end be placed on the dial gage (9) that ground guiding workbench (10) links to each other and measure.Porose on the table top of guiding workbench (10), its leg is placed on the ground (14), ground (14) is motionless relatively for guiding workbench (10), and injection bar (7) passes the hole on the table top, by two around the table top hole semicircle guiding sheaths injection bar (7) is led.
Injection bar (7) is a circular bar shape, the diameter of its lower end injection head is φ 50mm, it is greater than the diameter of shaft, produced a ring-shaped platform at injection head and shaft junction like this, on platform, place the gauge head (11) of a benkelman beams deflectometer, and benkelman beams deflectometer is positioned at from survey mark place far away, avoid when measuring slight sinking that the measurement of depth of penetration is exerted an influence, avoided the low shortcoming of certainty of measurement of dial gage simultaneously because the sinking of survey mark causes the guiding workbench (10) that links to each other with dial gage.
Claims (3)
1. open-air CBR tester, comprise loading, augmentor, add force measuring device, injection bar and depth of penetration measurement mechanism, the depth of penetration measurement mechanism is made of dial gage support, dial gage and guiding workbench, the dial gage support is fixed on the injection bar, dial gage one end links to each other with the dial gage support, the other end be placed on ground guiding workbench and link to each other of the present utility model being characterised in that:
(1) loading provides counter-force by reaction frame by the reaction beam that the earth anchor collection that comprises three above earth anchors and form supports;
(2) augmentor adopts afterburning gear-box, and afterburning gear-box is fixed under the reaction frame;
(3) add force measuring device and adopt the electronics dynamometer that connects electronic sensor, the electronic sensor upper end is fixed under the power output shaft of afterburning gear-box, and the convex gage outfit of lower end is positioned at the pit of injection bar upper end.
2. open-air CBR tester according to claim 1, it is characterized in that: the reaction frame of described formation loading and the reaction beam loose joint of supporting by four earth anchors, reaction frame adopts rectangle, this rectangle rack is parallel to the ground, the lateral length of rectangle is greater than the lateral separation of reaction beam, and longitudinal length is less than the fore-and-aft distance of reaction beam.
3. open-air CBR tester according to claim 1, it is characterized in that: described injection bar is a circular bar shape, the diameter of its lower end injection head is greater than the diameter of shaft, on the ring-shaped platform of injection head and shaft junction, place the gauge head of a benkelman beams deflectometer, and benkelman beams deflectometer is positioned at from survey mark place far away.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97201631 CN2286202Y (en) | 1997-03-06 | 1997-03-06 | Field CBR test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97201631 CN2286202Y (en) | 1997-03-06 | 1997-03-06 | Field CBR test instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2286202Y true CN2286202Y (en) | 1998-07-15 |
Family
ID=33923014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97201631 Expired - Fee Related CN2286202Y (en) | 1997-03-06 | 1997-03-06 | Field CBR test instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2286202Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101059412B (en) * | 2007-05-24 | 2010-12-15 | 泰安市路达公路仪器制造有限公司 | Novel pavement material intensity tester |
| CN102322050A (en) * | 2011-06-29 | 2012-01-18 | 广东省长大公路工程有限公司 | Static pressure type measurement device for compaction degree of layered-filling road embankment |
| CN103558096A (en) * | 2013-11-04 | 2014-02-05 | 中国地质科学院地质力学研究所 | Rock and earth mass in-situ direct shear test device with automatic data acquisition system and rock and earth mass in-situ direct shear test method |
| CN104483193A (en) * | 2014-12-08 | 2015-04-01 | 中国十七冶集团有限公司 | Detection method of strength of cement stable natural heavy gravel red-soil basic layer |
| CN105445121A (en) * | 2015-01-06 | 2016-03-30 | 北京市道路工程质量监督站 | Field detection equipment for shear resistance strength of asphalt mixture |
| CN105445120A (en) * | 2015-01-06 | 2016-03-30 | 北京市道路工程质量监督站 | In-situ test method for shear strength of asphalt mixture |
| CN108332783A (en) * | 2018-01-08 | 2018-07-27 | 张红艳 | A kind of engineering investigation static sounding platform supporting device |
| CN109944223A (en) * | 2019-04-25 | 2019-06-28 | 中建四局第一建筑工程有限公司 | A kind of anti-static pressure test apparatus of casta region ground and test method |
-
1997
- 1997-03-06 CN CN 97201631 patent/CN2286202Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101059412B (en) * | 2007-05-24 | 2010-12-15 | 泰安市路达公路仪器制造有限公司 | Novel pavement material intensity tester |
| CN102322050A (en) * | 2011-06-29 | 2012-01-18 | 广东省长大公路工程有限公司 | Static pressure type measurement device for compaction degree of layered-filling road embankment |
| CN103558096A (en) * | 2013-11-04 | 2014-02-05 | 中国地质科学院地质力学研究所 | Rock and earth mass in-situ direct shear test device with automatic data acquisition system and rock and earth mass in-situ direct shear test method |
| CN103558096B (en) * | 2013-11-04 | 2016-01-20 | 中国地质科学院地质力学研究所 | With the Rock And Soil in-situ direct shear test device and method of automatic data acquisition system (ADAS) |
| CN104483193A (en) * | 2014-12-08 | 2015-04-01 | 中国十七冶集团有限公司 | Detection method of strength of cement stable natural heavy gravel red-soil basic layer |
| CN105445121A (en) * | 2015-01-06 | 2016-03-30 | 北京市道路工程质量监督站 | Field detection equipment for shear resistance strength of asphalt mixture |
| CN105445120A (en) * | 2015-01-06 | 2016-03-30 | 北京市道路工程质量监督站 | In-situ test method for shear strength of asphalt mixture |
| CN108332783A (en) * | 2018-01-08 | 2018-07-27 | 张红艳 | A kind of engineering investigation static sounding platform supporting device |
| CN108332783B (en) * | 2018-01-08 | 2020-04-10 | 贵州鼎盛岩土工程有限公司 | Engineering reconnaissance is with static sounding platform strutting arrangement |
| CN109944223A (en) * | 2019-04-25 | 2019-06-28 | 中建四局第一建筑工程有限公司 | A kind of anti-static pressure test apparatus of casta region ground and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |