CN106052916B - Soil pressure box burying device and method for filling engineering - Google Patents
Soil pressure box burying device and method for filling engineering Download PDFInfo
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- CN106052916B CN106052916B CN201610640739.8A CN201610640739A CN106052916B CN 106052916 B CN106052916 B CN 106052916B CN 201610640739 A CN201610640739 A CN 201610640739A CN 106052916 B CN106052916 B CN 106052916B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/26—Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
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Abstract
The invention discloses a soil pressure box burying device and method for filling engineering. The connecting rods are hollow threaded rods, and connecting rods with different lengths can be combined to the designed length through the sleeve; the box placing disc can adjust the measuring position of the soil pressure box through the positioning nut; the sealing covers are used for sealing the top end and the bottom end of the connecting rod. The method comprises the steps that firstly, a disc placing box is fixed on a first section of connecting rod through a positioning nut and is adjusted to a designed measuring position; then fixing the soil pressure cell in a cell placing area of the cell placing disc in a welding mode; along with the increase of the filling height, the second section of connecting rod and the first section of connecting rod are fixedly connected through a sleeve, and a soil pressure box is installed; and by parity of reasoning, after the designed filling height is reached, all the wires are led out from the bus hole, and a top cover is installed for sealing. The invention has simple integral structure, convenient operation and good use effect, and effectively ensures the embedding precision requirement of the soil pressure cell.
Description
Technical Field
The invention relates to a soil pressure box burying device and method for filling engineering, and belongs to the technical field of site construction monitoring.
Background
With the continuous promotion of infrastructure engineering construction of railways, roads, earth and rockfill dams and the like in China, long-term monitoring of stress, deformation and the like in filling engineering becomes a main data source for design optimization, construction control, maintenance and repair. Among other things, stress monitoring typically relies on earth pressure cells buried in the earth. In the prior art, the burying of the earth pressure box of the filling engineering generally adopts a method of directly burying the earth pressure box in the filling soil, and the method has the problems that the earth pressure box is settled along with the settlement of the filling soil, so that the stress mode of the earth pressure box and the position of the earth pressure box are changed, and the monitoring data has large errors, is invalid and the like. Therefore, there is a need for an earth pressure cell burying device and method with accurate measurement data and convenient burying to solve the above problems.
Disclosure of Invention
The invention aims to solve the technical problem of providing a soil pressure cell device and a method for filling engineering, wherein the soil pressure cell device has a simple structure, is easy to connect and bury, and can provide a fixed end for the bottom surface of a soil pressure cell so as to ensure the position precision of the soil pressure cell.
In order to solve the technical problem, the technical scheme adopted by the device is as follows: the utility model provides a soil pressure cell buries device underground for fill engineering which key technology lies in: the device comprises at least two connecting rods, a box placing disc, a sleeve and a sealing cover, wherein the box placing disc is used for supporting the soil pressure box and adjusting the position of the soil pressure box; the box placing disc is arranged on the connecting rod;
the connecting rod is a hollow threaded rod, a branch hole is formed in the middle of the hollow threaded rod, and a main line hole is formed in the top end of the hollow threaded rod;
the box placing plate is a rectangular plate, a positioning hole and a box placing area for bearing the soil pressure box are arranged on the rectangular plate, and positioning nuts for positioning and adjusting the position of the soil pressure box are respectively arranged above and below the rectangular plate;
the sealing cover comprises a top cover positioned at the top end of the connecting rod and a bottom cover positioned at the bottom end of the connecting rod.
Preferably, the hollow threaded rod, the rectangular disc, the positioning nut and the sleeve are all made of stainless steel.
Preferably, the connecting rod is a standard fitting with an inner diameter of 45mm, a wall thickness of 5mm and a thread pitch of 4.5mm, and has three standard lengths of 0.3m, 0.5m and 1.0 m.
Preferably, the length of the branching hole is 10 cm-20 cm, and the width of the branching hole is 1 cm.
Preferably, the lead wires of the soil pressure cell are respectively led to the top end of the device through the wire dividing hole and the bus hole.
Preferably, the sleeve is an internally threaded stainless steel tube, and the height of the internally threaded stainless steel tube is 10 cm.
Preferably, the positioning hole and the positioning nut on the box placing disc are matched with the hollow threaded rod; and the box placing area on the box placing disc is used for placing a box body of the soil pressure box.
Preferably, the box body of the soil pressure box is fixed in a box placing area on the box placing disc in a welding mode.
Preferably, the sealing cover is a thin-wall hollow rubber tube with one closed end, and the outer diameter of the rubber tube is the same as the inner diameter of the hollow threaded rod.
The soil pressure cell burying method comprises the following steps:
1) when the filling engineering is carried out, firstly, a section of connecting rod is taken, the bottom of the hollow threaded rod is sealed by a sealing cover, the soil pressure box welded to the box placing area of the box placing plate is integrally connected with the connecting rod through a positioning hole on the rectangular plate, then the depth is adjusted to be measured by a positioning nut and the soil pressure box is fixed, and a lead on the soil pressure box is led out from the inside of the connecting rod through a middle part line hole in the connecting rod and is buried in the soil;
2) after the layer is filled, connecting the next section of connecting rod by using a sleeve, installing the next soil pressure cell welded to the box placing disc, increasing the connecting rod along with the rising of the filling height, fixing and embedding the soil pressure cell, leading out all the soil pressure cell leads through a bus hole at the top of the connecting rod at the top end after the designed filling height is reached, and installing a sealing cover to seal the top of the connecting rod;
the burying process of the soil pressure box is gradually completed along with the increase of the soil filling height, and the tight fixation of the box placing plate by a positioning nut is required to ensure the burying precision.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
1. the invention is provided with a connecting rod, a sleeve, a box placing disc and a sealing cover, wherein the connecting rod is a hollow threaded rod, 3 lengths can be selected, and connecting rods with different lengths can be combined to the designed length through the sleeve; the box placing disc is used for supporting the soil pressure box, and the measuring position of the soil pressure box can be adjusted through the positioning nut; the sealing covers are used for sealing the top end and the bottom end of the connecting rod so as to prevent the damage of the construction process. The soil pressure cell embedding device is simple in overall structure, convenient to operate and good in using effect, and effectively meets the requirement on embedding accuracy of the soil pressure cell.
2. The device provides a fixed end for the bottom surface of the soil pressure cell, thereby preventing the problems of downward movement, inclination and the like of the soil pressure cell caused by factors such as soil filling settlement and the like, ensuring the accurate measurement of the overlying soil pressure and reducing errors.
3. The connecting rod of the device adopts three length standards of 0.3m, 0.5m and 1.0m, is easy for batch production, can adapt to the change of the field filling height, and effectively saves the test time.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a connecting rod;
FIG. 3 is a schematic view of a cartridge tray;
FIG. 4 is a schematic view of the soil pressure cell before use of the device;
FIG. 5 is a schematic view of the soil pressure cell after the device is used;
FIG. 6 is a schematic diagram of a soil pressure value test of silt at the same height under a graded loading condition by a soil pressure cell test at three positions;
FIG. 7 is a graphical representation of the test results of FIG. 6;
wherein, 1, a connecting rod, 1-1, a hollow threaded rod, 1-2, a branching hole and 1-3 main line holes; 2. 2-1 of a box placing disc, 2-2 of a rectangular disc, 2-3 of a positioning hole, 2-4 of a box placing area and a positioning nut; 3. a sleeve; 4-1, a top cover, 4-2 and a bottom cover; 5. the soil pressure cell, 5-1 box body, 5-2 wire.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
Referring to fig. 1 to 3, the present embodiment includes at least two connecting rods 1, a box placing plate 2 for supporting and adjusting the position of a soil pressure box 5, a sleeve 3 for connecting two adjacent connecting rods 1, and a sealing cover for sealing the connecting rods 1; the box placing plate 2 is arranged on the connecting rod 1; the sleeve 3 is an internal thread stainless steel pipe and is used for connecting the connecting rods 1 with different lengths in a combined mode, and the height of the connecting rods is 10 cm.
The connecting rod 1 is a hollow threaded rod 1-1, a branch hole 1-2 is formed in the middle of the hollow threaded rod 1-1, and a bus hole 1-3 is formed in the top of a rod body of the hollow threaded rod 1-1.
The box placing disc 2 is a rectangular disc 2-1, a positioning hole 2-2 and a box placing area 2-3 for bearing the soil pressure box 5 are arranged on the rectangular disc 2-1, and positioning nuts 2-4 for positioning and adjusting the position of the soil pressure box 5 are respectively arranged on the upper part and the lower part of the rectangular disc 2-1;
the sealing cover comprises a top cover 4-1 positioned at the top end of the connecting rod 1 and a bottom cover 4-2 positioned at the bottom end. The sealing cover is a thin-wall hollow rubber tube with a closed single end, and the outer diameter of the sealing cover is the same as the inner diameter of the connecting rod 1.
And the positioning hole 2-2 and the positioning nut 2-4 on the box placing disc 2 are matched with the hollow threaded rod 1-1 and used for fixing the box placing disc 2 and adjusting the position. The box placing area 2-3 on the box placing disc 2 is used for placing a box body 5-1 of the soil pressure box 5. The box body 5-1 of the soil pressure box 5 is fixed on the box placing area 2-3 on the box placing disc 2 in a welding mode.
Referring to fig. 4 and 5, the working principle of the conventional soil pressure sensor is based on the newton's third law, i.e. the soil pressure sensor reacts to the reaction force of the soil pressure. The existing soil pressure sensor burying method is to directly place the soil pressure sensor in the soil layer, when the upper soil pressure changes to generate soil pressure N, the soil pressure of the upper soil layer acts on the soil pressure sensor, the soil pressure sensor simultaneously transmits stress to the lower soil layer to cause the lower soil layer to settle, the acting force is F, then the reacting force N 'reflected by the soil pressure box is N' = N-F, namely the soil pressure reacted by the soil pressure sensor is less than the actual soil pressure, and the principle is shown in figure 4. Therefore, we fix one end of the soil pressure sensor, so that the soil pressure sensor fully reflects the change of the upper soil pressure N, i.e. N = N', and the principle is shown in fig. 5.
Example 1
The process of the soil pressure cell embedding method of the newly-built roadbed soil pressure cell embedding device is as follows:
when the filling engineering is carried out, firstly, a section of connecting rod 1 is taken, the bottom of a hollow threaded rod 1-1 is sealed by a sealing cover 4-2, after the sealed connecting rod 1 is buried in the soil to a certain depth, the whole soil pressure box 5 welded to a box placing area 2-3 of a box placing disc 2 is connected with the connecting rod 1 through a positioning hole 2-2 on a rectangular disc 2-1, then a positioning nut 2-4 is used for adjusting the depth to be measured and fixed, a lead wire on the soil pressure box 5 is led out from the inside of the connecting rod 1 through a part of a line hole 1-2 in the connecting rod 1, after the filling of the layer is finished, a sleeve 3 is used for connecting the next section of connecting rod 1, the next soil pressure box 5 welded to the box placing disc 2 is installed, along with the rising of the filling height, the connecting rod 1 is added and the soil pressure box 5 is fixed and buried to reach the designed filling height, all the soil pressure cell wires 5-2 are led out through the main wire holes 1-3 at the top of the top connecting rod, and a top cover 4-1 is installed to seal the top of the connecting rod 1.
In order to verify the feasibility of the whole testing device, indoor test simulation is carried out, and as shown in fig. 6, the test adopts soil pressure boxes at three positions to test the soil pressure value of the silt at the same height under the graded stacking condition. Wherein, soil pressure cell A directly buries in soil, and soil pressure cell B adopts this device to bury underground, and soil pressure cell C arranges in the support pedestal (be used for verifying this device's feasibility), and the test result is seen in figure 7, can know through figure 7 that the accuracy of measuring through this device is higher.
Claims (8)
1. The utility model provides a soil pressure cell buries device underground for fill engineering which characterized in that: the soil pressure box comprises at least two connecting rods (1), a box placing disc (2) for supporting a soil pressure box (5) and adjusting the position of the soil pressure box, a sleeve (3) for connecting two adjacent connecting rods (1) and a sealing cover for sealing the connecting rods (1); the box placing disc (2) is arranged on the connecting rod (1);
the connecting rod (1) is a hollow threaded rod (1-1), a branch hole (1-2) is formed in the middle of the hollow threaded rod (1-1), and a bus hole (1-3) is formed in the top end of the hollow threaded rod;
the box placing disc (2) is a rectangular disc (2-1), a positioning hole (2-2) and a box placing area (2-3) for bearing the soil pressure box (5) are arranged on the rectangular disc (2-1), and positioning nuts (2-4) for positioning and adjusting the position of the soil pressure box (5) are respectively arranged on the upper part and the lower part of the rectangular disc (2-1);
the sealing cover comprises a top cover (4-1) positioned at the top end of the connecting rod (1) and a bottom cover (4-2) at the bottom end;
the hollow threaded rod (1-1), the rectangular disc (2-1), the positioning nut (2-4) and the sleeve (3) are all made of stainless steel;
the connecting rod (1) is a standard accessory with an inner diameter of 45mm, a wall thickness of 5mm and a thread pitch of 4.5mm, and has three standard lengths of 0.3m, 0.5m and 1.0 m.
2. An earth pressure cell burying device for fill works according to claim 1, wherein: the line dividing hole (1-2) is 10 cm-20 cm long and 1cm wide.
3. An earth pressure cell burying device for fill works according to claim 1, wherein: the lead (5-2) of the soil pressure cell (5) is respectively threaded to the top end of the device through the wire dividing hole (1-2) and the bus hole (1-3).
4. An earth pressure cell burying device for fill works according to claim 1, wherein: the sleeve (3) is an internal thread stainless steel pipe, and the height of the sleeve is 10 cm.
5. An earth pressure cell burying device for fill works according to claim 1, wherein: a positioning hole (2-2) and a positioning nut (2-4) on the box placing disc (2) are matched with the hollow threaded rod (1-1); the box placing area (2-3) on the box placing disc (2) is used for placing a box body (5-1) of the soil pressure box (5).
6. An earth pressure cell burying device for fill works according to claim 5, wherein: the box body (5-1) of the soil pressure box (5) is fixed on the box placing area (2-3) on the box placing disc (2) in a welding mode.
7. An earth pressure cell burying device for fill works according to claim 1, wherein: the sealing cover is a thin-wall hollow rubber tube with a closed single end, and the outer diameter of the sealing cover is the same as the inner diameter of the hollow threaded rod (1-1).
8. A burying method of an earth pressure cell burying device as claimed in any one of claims 1 to 7, wherein:
1) when filling engineering is carried out, firstly, a section of connecting rod (1) is taken, the bottom of a hollow threaded rod (1-1) is sealed by a bottom cover (4-2), the whole soil pressure box (5) welded to a box placing area (2-3) is connected with the connecting rod (1) through a positioning hole (2-2) on a rectangular disc (2-1), then a positioning nut (2-4) is used for adjusting to a designed measuring position and fixing, and a lead (5-2) on the soil pressure box is led out from the inside of the connecting rod (1) through a middle part of a line hole (1-2) in the connecting rod (1) and is embedded into soil;
2) after the layer is filled, connecting the next section of connecting rod (1) by using a sleeve (3), installing the next soil pressure cell (5) welded to the box placing disc (2), increasing the connecting rod (1) along with the rising of the filling height, fixing and embedding the soil pressure cell (5), leading out all soil pressure cell leads (5-2) through a main line hole (1-3) at the top of the connecting rod (1) after the designed filling height is reached, and installing a top cover (4-1) to seal the top of the connecting rod (1); and in the filling engineering process, the filling pressure is measured in time.
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| CN201610640739.8A CN106052916B (en) | 2016-08-08 | 2016-08-08 | Soil pressure box burying device and method for filling engineering |
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| CN201610640739.8A CN106052916B (en) | 2016-08-08 | 2016-08-08 | Soil pressure box burying device and method for filling engineering |
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| CN106052916B true CN106052916B (en) | 2022-06-24 |
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| CN106768499B (en) * | 2016-11-16 | 2023-08-08 | 中北大学 | Hydraulic soil pressure sensor |
| CN107761786B (en) * | 2017-10-16 | 2019-11-12 | 浙江煤炭测绘院有限公司 | A kind of mounting process for deep embeded type soil pressure cell |
| CN107574808A (en) * | 2017-10-30 | 2018-01-12 | 上海市城市建设设计研究总院（集团）有限公司 | Soil pressure sensor embedded device and its method for embedding |
| CN107816039A (en) * | 2017-10-31 | 2018-03-20 | 西南石油大学 | Soil pressure cell fixing device and application method after a kind of bored concrete pile |
| CN107859019B (en) * | 2017-12-26 | 2023-09-22 | 天津城建大学 | Three-dimensional soil pressure box complete application device and implementation method thereof |
| CN108760096A (en) * | 2018-06-11 | 2018-11-06 | 浙江工业大学 | A kind of threaded sealing device |
| CN110579586B (en) * | 2019-10-16 | 2023-05-23 | 长安大学 | Unsaturated soil-water-gas two-phase flow migration experimental instrument and method under loading and unloading disturbance |
| CN115387411A (en) * | 2022-09-30 | 2022-11-25 | 吉林建筑大学 | Splicing embedding device suitable for soil fixing pressure box |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201267533Y (en) * | 2008-09-17 | 2009-07-08 | 姚延丽 | Mobile three-dimensional operation area device for anaesthesia |
| CN101487249A (en) * | 2008-12-30 | 2009-07-22 | 中国科学院武汉岩土力学研究所 | Embedding apparatus and method for earth pressure box |
| CN201721171U (en) * | 2010-05-28 | 2011-01-26 | 湖州市善琏含山湖笔厂 | Three-section brush pen |
| CN103115339A (en) * | 2011-11-16 | 2013-05-22 | 王凤华 | Telescopic lamp pole |
| CN203310562U (en) * | 2013-06-27 | 2013-11-27 | 南京工业大学 | Device for directly measuring concrete lateral pressure |
| CN103528718A (en) * | 2013-10-21 | 2014-01-22 | 武汉大学 | Soft rock multi-measuring-point ground stress testing method by using connecting rod |
| CN104060598A (en) * | 2014-06-27 | 2014-09-24 | 西南交通大学 | Fixing device of vertically arranged soil pressure cell |
| CN204690723U (en) * | 2015-03-23 | 2015-10-07 | 山西省交通科学研究院 | A kind of earth pressure cell side direction fastening devices |
| CN204855242U (en) * | 2015-06-16 | 2015-12-09 | 兰州交通大学 | Bury fixing device of soil pressure cell underground |
| CN105222947A (en) * | 2015-10-16 | 2016-01-06 | 中国海洋大学 | Spliced type sea bed with range protective device surpasses hole pressure and measures feeler lever |
| CN105319123A (en) * | 2015-03-16 | 2016-02-10 | 河南工业大学 | Multifunctional model test pile |
| CN105586865A (en) * | 2016-03-09 | 2016-05-18 | 湖北省电力勘测设计院 | Earth pressure cell drilling embedding method and device |
| CN205301066U (en) * | 2016-01-15 | 2016-06-08 | 中国科学院武汉岩土力学研究所 | Multi -functional model stake |
| CN105784218A (en) * | 2016-04-28 | 2016-07-20 | 山西海源阳光科技有限公司 | Mining anchor pole dynamometer |
| CN205909958U (en) * | 2016-08-08 | 2017-01-25 | 石家庄铁道大学 | A soil pressure cell buries device underground for filling engineering |
-
2016
- 2016-08-08 CN CN201610640739.8A patent/CN106052916B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201267533Y (en) * | 2008-09-17 | 2009-07-08 | 姚延丽 | Mobile three-dimensional operation area device for anaesthesia |
| CN101487249A (en) * | 2008-12-30 | 2009-07-22 | 中国科学院武汉岩土力学研究所 | Embedding apparatus and method for earth pressure box |
| CN201721171U (en) * | 2010-05-28 | 2011-01-26 | 湖州市善琏含山湖笔厂 | Three-section brush pen |
| CN103115339A (en) * | 2011-11-16 | 2013-05-22 | 王凤华 | Telescopic lamp pole |
| CN203310562U (en) * | 2013-06-27 | 2013-11-27 | 南京工业大学 | Device for directly measuring concrete lateral pressure |
| CN103528718A (en) * | 2013-10-21 | 2014-01-22 | 武汉大学 | Soft rock multi-measuring-point ground stress testing method by using connecting rod |
| CN104060598A (en) * | 2014-06-27 | 2014-09-24 | 西南交通大学 | Fixing device of vertically arranged soil pressure cell |
| CN105319123A (en) * | 2015-03-16 | 2016-02-10 | 河南工业大学 | Multifunctional model test pile |
| CN204690723U (en) * | 2015-03-23 | 2015-10-07 | 山西省交通科学研究院 | A kind of earth pressure cell side direction fastening devices |
| CN204855242U (en) * | 2015-06-16 | 2015-12-09 | 兰州交通大学 | Bury fixing device of soil pressure cell underground |
| CN105222947A (en) * | 2015-10-16 | 2016-01-06 | 中国海洋大学 | Spliced type sea bed with range protective device surpasses hole pressure and measures feeler lever |
| CN205301066U (en) * | 2016-01-15 | 2016-06-08 | 中国科学院武汉岩土力学研究所 | Multi -functional model stake |
| CN105586865A (en) * | 2016-03-09 | 2016-05-18 | 湖北省电力勘测设计院 | Earth pressure cell drilling embedding method and device |
| CN105784218A (en) * | 2016-04-28 | 2016-07-20 | 山西海源阳光科技有限公司 | Mining anchor pole dynamometer |
| CN205909958U (en) * | 2016-08-08 | 2017-01-25 | 石家庄铁道大学 | A soil pressure cell buries device underground for filling engineering |
Non-Patent Citations (1)
| Title |
|---|
| 不同埋设状态下土压力盒砂标试验研究;李彦坤等;《岩土工程界》;20081128(第11期);67-69 * |
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