CN103711152A - Loading monitoring device and loading monitoring method for X-shaped model pile - Google Patents
Loading monitoring device and loading monitoring method for X-shaped model pile Download PDFInfo
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- CN103711152A CN103711152A CN201310689235.1A CN201310689235A CN103711152A CN 103711152 A CN103711152 A CN 103711152A CN 201310689235 A CN201310689235 A CN 201310689235A CN 103711152 A CN103711152 A CN 103711152A
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Abstract
The invention discloses a loading monitoring device and a loading monitoring method for an X-shaped model pile. The device comprises a soil-holding container, a loading device and a monitoring device. The method comprises the following steps of: pre-burying the X-shaped model pile pre-buried with sensing optical fibres in the soil body of the soil-holding container, then connecting the loading device with the soil-holding container by channel steel, applying a vertical load on the X-shaped model pile, and simulating action between the pile and soil under a pressure action as well as the bearing force and deformation situation of the pile by monitoring the stress-strain situation of the X-shaped model pile during the loading process by the monitoring device. According to the loading monitoring device and the loading monitoring method disclosed by the invention, the loading conditions of a test can be accurately controlled, the stress deformation situation of the X-shaped model pile in soil is monitored, and the shape and size of the pile are improved with pertinence according to the test result to meet engineering practice requirements better. Moreover, the device is simple and convenient to install, easy to control, capable of being cyclically used, and less in influence on the body of the pile.
Description
Technical field
The present invention relates to a kind of experimental rig and test method of foundation structure, be specifically related to a kind of X-type Model Pile and load monitoring device and monitoring method.
Background technology
In Practical Project, on-the-spot pile foundation testing cost is higher, and monitoring test is due to place and condition restriction, is difficult to control parameters in process of the test, nor convenient.Engineering pile foundation test loads and needs design arrangement counterforce device, and because added load is larger, counterforce device is had relatively high expectations, the on-the-spot time and effort consuming of installing.Traditional stress strain gauge adopts electromagnetic type or vibrating string type sensor, installation procedure many and at the scene time survival rate low, and be point sensor, only can monitor the ess-strain situation of pile foundation appointed part, because engineering geological condition is complicated, probably when analyzing stake with native interaction or pile body stressing conditions, produce leak source, if need comparatively comprehensively to analyze the characteristic of stake in soil, to arrange more sensor, and the wire that sensor extracts is too much, can affect pile quality, and can be pretty troublesome in practice of construction process.Therefore adopt a kind of easy full distributed monitoring means particularly important to analyzing the stress deformation situation of stake, need to design a kind of can be in the indoor apparatus and method that X-type Model Pile accurately added to load and full distributed monitoring pile body ess-strain.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of X-type Model Pile and load monitoring device and monitoring method.
Technical scheme: for solving the problems of the technologies described above, X-type Model Pile provided by the invention loads monitoring device and comprises:
Hold soil container, there is vertical sidewall and open top, be wherein filled with soil, in soil, embed and have X-type Model Pile, on described sidewall, be connected with column;
Charger, comprises the counter-force cover plate being fixedly connected with column, between described counter-force cover plate and described X-type Model Pile, jack, load sensor, force-transmitting pole and pad is installed from top to bottom successively;
Monitoring device, comprises the sensor fibre of installing along X-type Model Pile, is connected to the fiber data Acquisition Instrument of sensor fibre, and the load display being connected with load transducer by cable.
As preferably, described channel-section steel distributes in the sidewall external symmetry of holding soil container.
As preferably, described appearance soil container is rectangle, described sidewall and channel-section steel welding.
As preferably, described counter-force cover plate and channel-section steel welding, described sidewall and channel-section steel are hinged.
During use, the monitoring method of above-mentioned loading monitoring device comprises the following steps:
1) make X-type Model Pile, according to the very little X-type concrete pile scaled down of on-the-spot full size;
2) at X-type Model Pile surface fluting, be distributed in groove sensor fibre is stretching, with epoxy resin by groove fill, floating;
3) arrange and hold soil container, charger and monitoring device;
4) according to the reading of load sensor, accurately control the loading environment of jack, utilize fiber data Acquisition Instrument to monitor continuously the stress deformation situation of X-type Model Pile in soil.
Beneficial effect: the present invention adopts the apparatus and method of model testing, the load of the loading ratio situ loading loading is little, adopt jack as charger, with load sensor, accurately determine the size of load, X-type Model Pile is being applied in the process of vertical load, by monitoring device, monitor the ess-strain situation of X-type Model Pile in loading procedure, to simulation stake under pressure and native effect and bearing capacity and deformation.The present invention is the loading environment of Control experiment accurately, the stress deformation situation of monitoring X-type Model Pile in soil, and improve targetedly a shape and size according to result of the test, more meet engineering practice requirement.Apparatus of the present invention simple installation, is easy to control, the advantage such as can be recycled, and also the distributed sensing fiber using is little on pile body impact.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the sectional drawing of X-type Model Pile in Fig. 1.
The specific embodiment
Embodiment: the X-type Model Pile of the present embodiment loads monitoring device as depicted in figs. 1 and 2, comprise and there is the appearance soil container 9 that open at upright side walls and top, wherein be filled with soil 12, in soil 12, embed and have X-type Model Pile 8, the sidewall external symmetry of holding soil container 9 is distributed with four channel-section steels 13, hold soil container 9 and be fixedly connected with channel-section steel 13, can adopt welding or hinged mode.
Charger comprises and the counter-force cover plate 3 of channel-section steel 13 welding, jack 4, load sensor 5, force-transmitting pole 6 and pad 7 is installed between counter-force cover plate 3 and X-type Model Pile 8 from top to bottom successively.
Monitoring device comprises sensor fibre 10 and the fiber data Acquisition Instrument 1 connecting thereof, the load transducer 5, cable 11 and the load display 2 that connect successively.
As shown in Figure 3, along X-type Model Pile 8, sensor fibre 10 is installed.
During use, the X-type Model Pile of the present embodiment loads monitoring method and comprises the following steps:
1, according to the principle of similitude, by the very little X-type concrete pile scaled down of on-the-spot full size, the X-type Model Pile being prefabricated into.
2, a groove that 5mm is dark is opened in prefabricated X-type Model Pile surface, clean by removing in groove with small brushes and hair-dryer etc., with Instant cement, first stretching sensor fibre is fixed in groove, then encapsulates with epoxy resin, with hair-dryer, epoxy resin is dried up or etc. its natural air drying.
3, in holding soil container, first lay the soil layer of certain bed thickness, again pre-buried good X-type Model Pile is put into and held soil container, then the soil that layered arrangement needs in holding soil container is to the position of appointment, pad, force-transmitting pole, load sensor etc. are superposeed successively and are placed on stake top, with the first precompressed of jack, make each parts close contact, check to adjust the load that jack can apply just in time can be delivered on stake top simultaneously.
Wherein hold soil container and be of a size of 1.5m*1m*1m, by four block plates, be welded.Counter-force cover plate is made by the steel plate of a 3cm*100cm*100cm, and jack is fixed on counter-force cover plate with high-strength bolt.The maximum load that the length of force-transmitting pole and intensity can apply apart from distance and the test requirements document of jack according to X-type Model Pile top is determined.The size of pad is determined according to the size of X-type Model Pile, can cover X-type Model Pile pile crown, is as the criterion.
4, load sensor is connected to load display, sensor fibre is connected to fiber data Acquisition Instrument, debug every coefficient, see that whether loading and monitoring system be normal, if undesired, to check that each parts connect and whether have problem, sensor fibre whether to rupture etc., repair, if normally, can test.
5, according to the reading of load sensor, accurately control the loading environment of jack, utilize fiber data Acquisition Instrument to monitor continuously the stress deformation situation of X-type Model Pile in soil, and improve targetedly a shape and size according to result of the test.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this invention technological thought, carry out various change and modification completely.The technical scope of this invention is not limited to the content on manual, must determine its technical scope according to claim scope.
Claims (5)
1. X-type Model Pile loads a monitoring device, it is characterized in that comprising:
Hold soil container, there is vertical sidewall and open top, be wherein filled with soil, in soil, embed and have X-type Model Pile, on described sidewall, be connected with column;
Charger, comprises the counter-force cover plate being fixedly connected with column, between described counter-force cover plate and described X-type Model Pile, jack, load sensor, force-transmitting pole and pad is installed from top to bottom successively;
Monitoring device, comprises the sensor fibre of installing along X-type Model Pile, is connected to the fiber data Acquisition Instrument of sensor fibre, and the load display being connected with load transducer by cable.
2. X-type Model Pile according to claim 1 loads monitoring device, it is characterized in that: described column is comprised of four channel-section steels, and described channel-section steel distributes in the sidewall external symmetry of container.
3. X-type Model Pile according to claim 2 loads monitoring device, it is characterized in that: described appearance soil container is rectangle described sidewall and channel-section steel welding.
4. X-type Model Pile according to claim 2 loads monitoring device, it is characterized in that: described counter-force cover plate and channel-section steel welding, described sidewall and channel-section steel are hinged.
5. X-type Model Pile as claimed in claim 1 loads the monitoring method of monitoring device, it is characterized in that comprising the following steps:
1) make X-type Model Pile, according to the very little X-type concrete pile scaled down of on-the-spot full size;
2) at X-type Model Pile surface fluting, be distributed in groove sensor fibre is stretching, with epoxy resin by groove fill, floating;
3) arrange and hold soil container, charger and monitoring device:
Wherein holding soil container is the open top receptacle with upright side walls, is wherein filled with soil, in soil, embeds and has X-type Model Pile, on described sidewall, is connected with column,
Charger comprises the counter-force cover plate being fixedly connected with column, between described counter-force cover plate and described X-type Model Pile, jack, load sensor, force-transmitting pole and pad is installed from top to bottom successively;
Monitoring device comprises the sensor fibre of installing along X-type Model Pile, is connected to the fiber data Acquisition Instrument of sensor fibre, and the load display being connected with load transducer by cable;
4) according to the reading of load sensor, accurately control the loading environment of jack, utilize fiber data Acquisition Instrument to monitor continuously the stress deformation situation of X-type Model Pile in soil.
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| CN201310689235.1A CN103711152B (en) | 2013-12-17 | 2013-12-17 | X-type Model Pile loads monitoring device and monitoring method |
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| CN201310689235.1A CN103711152B (en) | 2013-12-17 | 2013-12-17 | X-type Model Pile loads monitoring device and monitoring method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099954A (en) * | 2014-07-11 | 2014-10-15 | 郑州大学 | Transverse-vertical loading device for pile foundation model experiments |
| CN104594394A (en) * | 2014-11-28 | 2015-05-06 | 长安大学 | Method for making model pile |
| CN107012895A (en) * | 2016-01-27 | 2017-08-04 | 化建新 | A kind of CFG pile composite foundations bearing capacity characteristics and deformation analysis method |
| CN109238606A (en) * | 2018-10-19 | 2019-01-18 | 佛山科学技术学院 | A kind of loading detection device and its measuring method suitable for bridge main beam |
| CN109813472A (en) * | 2019-03-14 | 2019-05-28 | 湖南道达宇科技有限公司 | A kind of embedded load sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011117172A (en) * | 2009-12-02 | 2011-06-16 | Shimizu Corp | Method for checking end bearing capacity of cast-in-place pile |
| CN102607754A (en) * | 2012-03-16 | 2012-07-25 | 东南大学 | Device for measuring negative skin friction of pile soil |
| CN202610847U (en) * | 2012-03-16 | 2012-12-19 | 东南大学 | Measuring device of pile soil negative friction |
| CN102877492A (en) * | 2012-10-31 | 2013-01-16 | 东南大学 | Negative frictional resistance pile soil displacement measuring device |
-
2013
- 2013-12-17 CN CN201310689235.1A patent/CN103711152B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011117172A (en) * | 2009-12-02 | 2011-06-16 | Shimizu Corp | Method for checking end bearing capacity of cast-in-place pile |
| CN102607754A (en) * | 2012-03-16 | 2012-07-25 | 东南大学 | Device for measuring negative skin friction of pile soil |
| CN202610847U (en) * | 2012-03-16 | 2012-12-19 | 东南大学 | Measuring device of pile soil negative friction |
| CN102877492A (en) * | 2012-10-31 | 2013-01-16 | 东南大学 | Negative frictional resistance pile soil displacement measuring device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099954A (en) * | 2014-07-11 | 2014-10-15 | 郑州大学 | Transverse-vertical loading device for pile foundation model experiments |
| CN104594394A (en) * | 2014-11-28 | 2015-05-06 | 长安大学 | Method for making model pile |
| CN107012895A (en) * | 2016-01-27 | 2017-08-04 | 化建新 | A kind of CFG pile composite foundations bearing capacity characteristics and deformation analysis method |
| CN109238606A (en) * | 2018-10-19 | 2019-01-18 | 佛山科学技术学院 | A kind of loading detection device and its measuring method suitable for bridge main beam |
| CN109813472A (en) * | 2019-03-14 | 2019-05-28 | 湖南道达宇科技有限公司 | A kind of embedded load sensor |
| CN109813472B (en) * | 2019-03-14 | 2023-11-24 | 衡通华创(北京)科技有限公司 | Embedded load sensor |
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| CN103711152B (en) | 2015-10-07 |
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