CN202139619U - Hanging device for pressure cell - Google Patents
Hanging device for pressure cell Download PDFInfo
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- CN202139619U CN202139619U CN 201120211525 CN201120211525U CN202139619U CN 202139619 U CN202139619 U CN 202139619U CN 201120211525 CN201120211525 CN 201120211525 CN 201120211525 U CN201120211525 U CN 201120211525U CN 202139619 U CN202139619 U CN 202139619U
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- pressure cell
- hanging device
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- arc groove
- pile
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Abstract
The utility model relates to rock engineering field and provides a hanging device for a pressure cell. The hanging device comprises at least a plurality of connecting pieces, and is characterized in that both ends of each connecting piece are semi-circular grooves, the semi-circular groove at the tail end of a first connecting piece is in butt joint with the semi-circular groove at the front end of a second connecting piece, the joint portion is fixed with screws, and the pressure cell is fixed in a circular space formed by two semi-circular grooves. Six connecting pieces are sequentially connected in a manner mentioned above to form a hanging device for a pressure cell matching with the pressure cell. Each circular space formed by two semi-circular grooves has a pressure cell fixed therein. The utility model provides a repeatedly usable hanging device for a pressure cell, the hanging device having fixed direction and position.
Description
Technical field
The utility model relates to the geotechnical engineering field, is a kind of pressure cell hanging device.
Background technology
Therefore composite foundation technology has obtained extensive use in China because of strengthening the advantage that the two potential of bearing upper load jointly of body and natural ground has both economical actual effect than good utilisation.The main type of composite foundation comprises all kinds of sand-gravel pile composite foundations, soil-cement pile composite foundation, low-intensity pile composite foundation, soil stake, dust pile compositing foundation, steel concrete pile composite foundation, reinforced earth ground etc.
In the plain desert area of hair crow, application at present most often shake sand washing pile composite foundation, vibro-replacement stone pile composite foundation and cement mixing method composite foundation.These three types of pile body composite foundations have produced good social benefit and economic benefit applying of plain desert area of hair crow.Yet, since practice development rapidly and the present situation that theoretical research relatively lags behind make also very immature about the pile body Bearing Capacity of Composite Foundation theory of computation at present, especially its theory of pile body composite foundation in the aeolian sand stratum more seem extremely thin a little less than.Along with the sand washing stake of shaking, vibro replacement stone column and cement mixing method composite foundation at present in the application gradually of the plain desert area of hair crow; Existing theory has not all caught up with the development of practice in many aspects; About pile body composite foundation design and construction just are based upon on the limited experiential basis mostly, therefore many in theory aspects also need constantly to strengthen exploring, research, development and raising.
Sand pile and broken stone pile all belong to discrete material pile; And the significant problem that effective length need be considered when being sand pile composite foundation and replacement stone pile composite foundation optimal design, from the bearing capacity angle, effective length (claiming that again critical stake is long) is meant characteristic one timing of other conditions (shape of stake, sectional area size, pile shaft material etc.) and inter-pile soil; The also corresponding raising of characteristic load bearing capacity along with the long increase stake of stake; But along with the long further increase of stake, the increase of pile body bearing capacity is gradually slow, when stake is long when surpassing a certain limiting value; The increase of bearing capacity is almost nil, and this limiting length is called effective length.Because that part of pile body below the effective length can be ignored to the contribution of pile capacity, therefore rationally definite effective length can be avoided because of blindly increasing the long significant wastage that causes of stake.
Therefore, how to confirm the effective length of sand pile and broken stone pile, make it can satisfy requirement of engineering, unlikely again long and cause waste, be the problem of very paying close attention in the engineering practice always.So far also do not see report to some extent about the research of hair Wu Su desert aeolian accumulation sandy ground layer medium sand pile composite foundation and replacement stone pile composite foundation effective length aspect; To this present situation; We study the effective length of semo-infinite aeolian sand layer medium sand pile composite foundation and replacement stone pile composite foundation through load test through bury the method for pressure cell underground on test pile stake limit.And, designed the pressure cell hanging device in order to make pressure cell can be embedded in the permanent position and the direction on test pile limit.
Summary of the invention
The purpose of the utility model provide a kind of can permanent position and direction and reusable pressure cell hanging device.
The technical scheme of the utility model is: a kind of pressure cell hanging device; Which comprises at least many braces; It is characterized in that: the head and the tail two ends of every brace all are half-arc grooves; The tail end half-arc groove of first brace docks with the head end half-arc groove of second brace, and the junction is through bolt, and pressure cell is fixed in the circular space of two half-arc grooves formations.
Described many braces refer to 6; 6 braces all connect according to half-arc groove butt joint and the mode through bolt successively; Form and the supporting pressure cell hanging device of pressure cell, all be fixed with pressure cell in the circular space that per two half-arc grooves constitute.
Described brace is the steel brace, and every steel disc length is 1-2m, and the thickness of steel disc is 2mm.
The diameter of the half-arc groove on the described brace is confirmed to be complementary with it according to the size of the pressure cell that uses.
Described pressure cell is TJ-22 a type type vibration wire earth pressure cell, and diameter is 12cm.
The inside diameter of described half-arc groove and pressure cell external diameter coupling.
The beneficial effect of the utility model is: through working pressure box hanging device, can bury the pressure cell that satisfies the test demand degree of depth underground according to the length of test pile, and make pressure cell can be fixed in same plane and direction, make the data of obtaining more accurate; This device connects according to half-arc groove butt joint and the mode through bolt through many braces successively; All be fixed with pressure cell in the circular space that per two half-arc grooves become; Therefore dismounting is convenient; Be easy to carry about with one, and can reuse, for the research of sand pile composite foundation and replacement stone pile composite foundation effective length aspect provides great convenience.
Description of drawings
To combine embodiment that the utility model is further described below:
Fig. 1 is a pressure cell hanging device structural representation;
Fig. 2 is the steel disc structural representation;
Fig. 3 is pressure cell hanging device mode of occupation figure.
Among the figure: 1, half-arc groove; 2, brace; 3, pressure cell; 4, bolt; 5, pressure cell hanging device; 6, test pile.
The specific embodiment
This pressure cell hanging device 5 comprises many braces 2 at least; The head and the tail two ends of every brace 2 all are half-arc grooves 1, see Fig. 2, and present embodiment adopts 6 braces 2; The tail end half-arc groove 1 of first brace 2 docks with the head end half-arc groove 1 of second brace 2; The junction is fixing through bolt 4, and pressure cell 3 is fixed in the circular space of two half-arc grooves, 1 formation, and six roots of sensation steel disc all connects according to half-arc groove 1 butt joint and through bolt 4 fixing modes successively; Form the pressure cell hanging device 5 supporting, in the circular space that per two half-arc grooves 1 constitute pressure cell 3 is housed all with pressure cell 3.
Above-mentioned pressure cell 3 is TJ-22 type type vibration wire earth pressure cells; Diameter is 12cm; Because the inside diameter of half-arc groove 1 is mated with pressure cell 3 external diameters, so the diameter of half-arc groove 1 gets 12cm equally, and above-mentioned brace 2 is steel braces; Every steel disc length is got 1.5m, and the thickness of steel disc is 2mm.
During use, as shown in Figure 3, the total length of the test pile 6 of present embodiment is 9m, and at first with the leveling of test pile place, in the stake limit boring of test pile 6, the aperture is 15cm, and the aperture is greater than the 12cm of pressure cell hanging device 5; On-the-spot then pressure cell 3 is installed and fixed in the pressure cell hanging device 5, the hanging device splicing that pressure cell is installed is good and imbed in the hole, make pressure cell imbed designated depth and press close to test pile 6; Next in the hole successively landfill go into sand and water bob method and carry out closely knitly, until boring is filled up, fix hanging device; At last the pressure cell data wire is connected on the measurement mechanism, test pile 6 is carried out load test, under load step by step, record the data of each TJ that buries underground-22 type type vibration wire earth pressure cell 3, change and then confirm effective length in order to analyzing pressure.After load test finishes, near former boring, carry out parallel boring, dismantle with the hanging device lifting and with pressure cell and hanging device then, pressure cell that disassembles and hanging device can be reused next time.
Present embodiment and embodiment 1 structure are basic identical; The total length of different is test pile 6 is 14m; The length of every brace 2 is 2m; Because test pile 6 length during the quantity that brace 2 connects is used according to reality confirm, so the total quantity of brace 2 is seven, still adopts TJ-22 type type vibration wire earth pressure cell 3.
During use; To nuzzle in the hole on test pile 6 next doors by the pressure cell hanging device 5 that seven steel discs connect and compose; In the hole, filling full sand and water bob method carries out closely knit; Just can record the experimental data of the TJ-22 type type vibration wire earth pressure cell 3 on a limit then through load test, the pressure cell hanging device is reclaimed, in order to use next time with embodiment 1 identical mode to test pile 6.
Claims (7)
1. pressure cell hanging device; Which comprises at least many braces (2); It is characterized in that: the head and the tail two ends of every brace (2) all are half-arc groove (1); The tail end half-arc groove (1) of first brace (2) docks with the head end half-arc groove (1) of second brace (2), and the junction is fixing through bolt (4), and pressure cell (3) is fixed in the circular space of two half-arc grooves (1) formation.
2. a kind of pressure cell hanging device according to claim 1; It is characterized in that: described many braces (2) refer to 6; 6 braces (2) all connect according to half-arc groove (1) butt joint and through the fixing mode of bolt (4) successively; Form and the supporting pressure cell hanging device (5) of pressure cell (3), all be fixed with pressure cell (3) in the circular space that per two half-arc grooves (1) constitute.
3. a kind of pressure cell hanging device according to claim 1 is characterized in that: described brace (2) is the steel brace, and every steel disc length is 1-2m, and the thickness of steel disc is 2mm.
4. a kind of pressure cell hanging device according to claim 1 is characterized in that: test pile (6) length during the quantity that described brace (2) connects is used according to reality is confirmed.
5. a kind of pressure cell hanging device according to claim 1 is characterized in that: the diameter of the half-arc groove (1) on the described brace (2) is confirmed to be complementary with it according to the size of the pressure cell (3) that uses.
6. a kind of pressure cell hanging device according to claim 1 is characterized in that: described pressure cell (3) is TJ-22 a type type vibration wire earth pressure cell, and diameter is 12cm.
7. a kind of pressure cell hanging device according to claim 1 is characterized in that: the inside diameter of described half-arc groove (1) and pressure cell (3) external diameter coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120211525 CN202139619U (en) | 2011-06-22 | 2011-06-22 | Hanging device for pressure cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120211525 CN202139619U (en) | 2011-06-22 | 2011-06-22 | Hanging device for pressure cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202139619U true CN202139619U (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120211525 Expired - Fee Related CN202139619U (en) | 2011-06-22 | 2011-06-22 | Hanging device for pressure cell |
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| CN (1) | CN202139619U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806426A (en) * | 2014-02-10 | 2014-05-21 | 水利部交通运输部国家能源局南京水利科学研究院 | Adjustable position fixing installation device of soil pressure gauge |
| CN103924572A (en) * | 2014-04-21 | 2014-07-16 | 福州大学 | Embedding device and method for soil pressure gauges in deep silt soil layer |
| CN104294862A (en) * | 2014-10-20 | 2015-01-21 | 沪昆铁路客运专线湖南有限责任公司 | Convenient-quick in-hole instrument positioning and burying device |
| CN104294863A (en) * | 2014-10-20 | 2015-01-21 | 中国科学院武汉岩土力学研究所 | Cord type in-hole monitor positioning and embedding device |
| CN106192970A (en) * | 2016-07-12 | 2016-12-07 | 中国矿业大学 | A kind of in-situ soil pressure test device and method |
| CN109211464A (en) * | 2018-09-18 | 2019-01-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Osmometer embedded device and method for embedding |
| CN110984113A (en) * | 2019-12-25 | 2020-04-10 | 水利部交通运输部国家能源局南京水利科学研究院 | Pile body soil pressure box installation system and installation method |
-
2011
- 2011-06-22 CN CN 201120211525 patent/CN202139619U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806426A (en) * | 2014-02-10 | 2014-05-21 | 水利部交通运输部国家能源局南京水利科学研究院 | Adjustable position fixing installation device of soil pressure gauge |
| CN103924572A (en) * | 2014-04-21 | 2014-07-16 | 福州大学 | Embedding device and method for soil pressure gauges in deep silt soil layer |
| CN104294862A (en) * | 2014-10-20 | 2015-01-21 | 沪昆铁路客运专线湖南有限责任公司 | Convenient-quick in-hole instrument positioning and burying device |
| CN104294863A (en) * | 2014-10-20 | 2015-01-21 | 中国科学院武汉岩土力学研究所 | Cord type in-hole monitor positioning and embedding device |
| CN104294863B (en) * | 2014-10-20 | 2016-02-10 | 中国科学院武汉岩土力学研究所 | In a kind of cotton rope formula hole, position embedded device demarcated by instrument |
| CN104294862B (en) * | 2014-10-20 | 2016-09-28 | 沪昆铁路客运专线湖南有限责任公司 | In a kind of portable hole, position embedded device demarcated by instrument |
| CN106192970A (en) * | 2016-07-12 | 2016-12-07 | 中国矿业大学 | A kind of in-situ soil pressure test device and method |
| CN106192970B (en) * | 2016-07-12 | 2018-02-02 | 中国矿业大学 | A kind of soil pressure testing device in situ and method |
| CN109211464A (en) * | 2018-09-18 | 2019-01-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Osmometer embedded device and method for embedding |
| CN110984113A (en) * | 2019-12-25 | 2020-04-10 | 水利部交通运输部国家能源局南京水利科学研究院 | Pile body soil pressure box installation system and installation method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20180622 |
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| CF01 | Termination of patent right due to non-payment of annual fee |