CN221095231U - Anchor pile method reaction frame with safety detection system - Google Patents
Anchor pile method reaction frame with safety detection system Download PDFInfo
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- CN221095231U CN221095231U CN202322401845.9U CN202322401845U CN221095231U CN 221095231 U CN221095231 U CN 221095231U CN 202322401845 U CN202322401845 U CN 202322401845U CN 221095231 U CN221095231 U CN 221095231U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 claims 1
- 230000003068 static effect Effects 0.000 abstract description 11
- 238000007689 inspection Methods 0.000 abstract 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides an anchor pile reaction frame with a safety detection system, which can monitor the stress state of anchor pile steel bars and the inclination angle of the reaction frame in real time when the anchor pile reaction frame is adopted to carry out the anchor pile method static load test, so that the safety of the anchor pile method static load test is ensured. This anchor stake reaction frame from taking safety inspection system includes: the anchor pile reaction frame body and the safety detection system; the security detection system includes: strain gauges and tilt sensors; the strain gauge is arranged on the anchor pile steel bar of each anchor pile of the anchor pile reaction frame body and is used for monitoring the strain of the anchor pile steel bar in the test process in real time; and the inclination angle sensor is arranged at the center of each anchor disc of the anchor pile reaction frame body and used for monitoring the inclination angle of the anchor disc in the test process in real time.
Description
Technical Field
The utility model relates to an anchor pile reaction frame, in particular to an anchor pile method reaction frame with a safety detection system, and belongs to the technical field of constructional engineering.
Background
The anchor pile method is one of the most commonly used methods for pile foundation static load test. The reaction frame of the anchor pile method test device consists of a reaction main beam and a reaction secondary beam, the force is applied to the pile top of the test pile through the jack, the reaction force is simultaneously transmitted to the reaction frame, and the force transmitted by the reaction frame is transmitted to the anchor pile through the anchor pile tension member (the pillow and the pull rod).
The counterforce beam device of the anchor pile provides counterforce by approaching to engineering piles or presetting piles, the installation process is simple, convenient and quick, the efficiency is high, compared with a pile-up method, the cost can be greatly saved, and the advantages are more outstanding especially when the pile foundation with large tonnage is tested.
The anchor pile method adopts the combination of the steel beam and the anchor pile to provide counter force, but in actual engineering, the phenomenon of uneven stress of each anchor pile often occurs due to the difference of construction quality, so that the stress of the anchor pile steel bars is asymmetric or the phenomenon of local overstretching of the anchor pile steel bars is caused; when the stress of the anchor piles is uneven, single or multiple anchor piles can be excessively pulled up, the counterforce frame is inclined and unstable, and the serious case can cause the partial reinforcing steel bar to be broken, so that the counterforce frame is collapsed, the dial indicator is damaged, and the test fails; in severe cases, the personal safety of workers is threatened, and even serious safety accidents are caused.
Therefore, the method has important significance in monitoring the stress state of the anchor pile steel bars and the inclination angle of the counter-force frame in real time in the anchor pile method test process, and can avoid the damage of the anchor piles and equipment and casualties.
Disclosure of utility model
In view of the above, the utility model provides the anchor pile reaction frame with the safety detection system, which can monitor the stress state of the anchor pile reinforcing steel bar and the inclination angle of the reaction frame in real time when the anchor pile reaction frame is adopted to carry out the anchor pile static load test, so that the safety of the anchor pile static load test is ensured.
The technical scheme adopted by the utility model is as follows: an anchor pile reaction frame with a safety detection system, comprising: an anchor pile reaction frame body; the anchor pile reaction frame body comprises: anchor piles, test piles, bearing plates, jacks, counterforce main beams, counterforce secondary beams, pull rods, reference beams and anchor plates; the method is characterized in that: the system also comprises a safety detection system; the security detection system includes: strain gauges and tilt sensors;
Installing strain gauges on more than one anchor pile steel bar of each anchor pile, wherein the strain gauges are used for monitoring the strain of the corresponding anchor pile steel bar in the test process in real time; and the center of each anchor disc is provided with an inclination angle sensor for monitoring the inclination angle of the anchor disc in the test process in real time.
Further, the safety detection system also comprises an alarm module; the strain gauge and the inclination sensor are respectively and electrically connected with the alarm module and are used for sending detected signals to the alarm module; and a reaction frame inclination angle alarm value and an anchor plate steel bar strain alarm value are preset in the alarm module.
Further, the strain gauge and the inclination sensor are internally provided with a wireless transmission module, and are in wireless connection with the alarm module through the wireless transmission module.
Further, strain gauges are arranged on two anchor pile reinforcing bars which are symmetrical along the center of each anchor pile.
Furthermore, an inclination sensor mounting groove is formed in the center of the anchor disc, and an inclination sensor is integrally mounted on the anchor disc.
Further, a force sensor is arranged at the top of the oil cylinder of the jack.
Further, a displacement meter is arranged on the foundation beam of the anchor pile reaction frame body.
The beneficial effects are that:
(1) According to the utility model, the safety detection system is arranged in the anchor pile reaction frame, and the strain of the anchor pile steel bar and the inclination angle of the reaction frame can be monitored in real time in the anchor pile method test process, so that the stress state of the anchor pile steel bar and the inclination angle of the reaction frame in the test process can be monitored, and the anchor pile, equipment damage and casualties accidents are avoided.
(2) According to the utility model, an acoustic alarm module with a reaction frame inclination angle alarm value and an anchor plate steel bar strain alarm value preset in the interior is arranged, so that early warning can be sent out in time in the test process, and the safety of the anchor pile method static load test is ensured.
(3) In the utility model, strain gauges are arranged on the plurality of anchor pile steel bars on each anchor pile, the strain of the anchor pile steel bars is monitored in real time, but when the monitoring value of one strain gauge reaches the strain alarm value of the anchor plate steel bars, an alarm is sent out, and the safety is improved.
(4) According to the utility model, the wireless transmission module is arranged in each sensor, the collected monitoring data is transmitted to the acoustic alarm module in a wireless mode, and the situation that the data wire is wound on site to influence the test safety is avoided.
Drawings
FIG. 1 is a schematic structural view of an anchor pile reaction frame with a safety detection system according to the present utility model;
FIG. 2 is a schematic view of the installation of the tilt sensor on the anchor disc.
Wherein: 1-anchor piles; 2-pile test; 3-reference beams; 4-a pressure bearing plate; 5-jack; 6-a counterforce girder; 7-a displacement meter; 8-force sensor; 9-strain gauge; 10-an inclination sensor; 11-anchor pile steel bars; 12-anchor disc; 13-a pull rod; 14-counterforce secondary beams; 15-a pillow; 16-an acoustic alarm; 17-an acoustic alarm module; 18-tilt sensor mounting slots.
Detailed Description
The utility model is described in further detail below with reference to the drawings and detailed description.
The embodiment provides an anchor pile reaction frame with a safety detection system, which can monitor the stress state of anchor pile steel bars and the inclination angle of the reaction frame in real time in the anchor pile method test process, and ensure the safety of the anchor pile method static load test.
As shown in fig. 1, the anchor pile reaction frame includes: the anchor pile reaction frame body and the safety detection system are arranged on the anchor pile reaction frame body; wherein anchor pile reaction frame body (be the anchor pile reaction frame body in the conventional anchor pile method test device) includes: anchor pile 1, test pile 2, reference beam 3, bearing plate 4, jack 5 (hydraulic jack is adopted in this example), counterforce main beam 6, counterforce secondary beam 14, pull rod 13 and anchor disc 12; the security detection system includes: a displacement meter 7, a force sensor 8, a strain gauge 9, an inclination sensor 10 and an acoustic alarm module.
For convenience of description, the length direction of the counterforce main beam 6 is longitudinal, and the length direction of the counterforce secondary beam 14 is transverse, that is, the counterforce main beam 6 and the counterforce secondary beam 14 are perpendicular to each other.
The jack 5 is placed on the pile top of the test pile 2 through the bearing plate 4 (namely, the bearing plate 4 is placed at the right central position of the top surface of the test pile 2, and the jack 5 is placed on the upper part of the bearing plate 4); a force sensor 8 is arranged at the top of the oil cylinder of the jack 5; the acting force of the jack 5 on the test pile 2 (the data required to be monitored during the static load test of the pile foundation) in the test process is monitored in real time through the force sensor 8; the center of the reaction force main beam 6 is aligned with the test pile 2 (initially, the reaction force main beam 6 is supported by a temporary supporting means). The two counterforce secondary beams 14 are arranged at two ends of the counterforce main beam 6 in the length direction and are transversely arranged above the counterforce main beam 6; each of the ground surfaces corresponding to the two ends of each counterforce secondary beam 14 is provided with an anchor pile 1, and the anchor disc 12 with the inclination angle sensor 10 is fixed with the anchor pile steel bars 11, so that the total of four anchor discs 12. As shown in fig. 2, an inclination sensor mounting groove 18 is formed in the center of the anchor plate 12, and the inclination sensor 10 is integrally mounted on the anchor plate 12. The inclination sensor 10 is used for monitoring the inclination of the anchor pile reaction frame body (specifically, the inclination of the reaction secondary beam 14) in real time during the test.
The midlines of the counterforce secondary beams 14 are aligned with the midlines of the two anchor piles 1 corresponding thereto. Pillow 15 is placed at the position corresponding to anchor pile 1 at the top of the two ends of counterforce secondary beam 14, and pull rod 13 passes through pillow 15 and anchor disc 12 and is screwed on anchor disc 12 with the bolt.
The reference beam 3 is fixed with the ground, the displacement meter 7 is installed on the reference beam 3, and the monitoring end of the displacement meter 7 faces the test pile 2 and is used for monitoring the displacement of the test pile 2 (data required to be monitored in a pile foundation static load test) in the test process in real time.
The strain gauge 9 is arranged on the anchor pile steel bar 11 of each anchor pile 1 and is used for monitoring the strain of the anchor pile steel bar 11 in real time in the test process; the strain gauge 9 is attached to the anchor pile rebar 11 by gluing or other means. As an example, strain gauges 9 are mounted on a plurality of anchor pile bars 11 of each anchor pile 1, and strain of the anchor pile bars 11 at different positions on the anchor pile 1 is monitored. As an example, strain gauges 9 are mounted on two anchor pile bars 11 symmetrical along the center of the anchor pile 1, so that 8 strain gauges 9 are provided in total.
The displacement meter 7, the force sensor 8, the strain gauge 9 and the inclination sensor 10 are respectively connected with an acoustic alarm module 17 (such as a main machine box provided with an acoustic alarm 16) and are used for sending detected signals to the acoustic alarm module 17; the reaction frame inclination angle alarm value and the anchor plate steel bar strain alarm value which are determined before the test are preset in the acoustic alarm module 17, wherein the anchor plate steel bar strain alarm value can be the limit tensile strain or the limit tensile strain close to the limit tensile strain of the anchor plate steel bar. As an example, the displacement meter 7, the inclination angle sensor 10 and the force sensor 8 are internally provided with wireless transmission modules, and monitoring data acquired by each sensor are transmitted into the acoustic alarm module 17 in real time through the wireless transmission modules; when the detected inclination angle of the anchor pile reaction frame body or the tensile strain of the anchor pile steel bars (the tensile strain of the anchor pile steel bars 11 monitored by any strain gauge 9) exceeds the corresponding alarm value, the acoustic alarm 16 in the acoustic alarm module 17 alarms.
As an example, the mobile phone end or the PC end is wirelessly connected with the acoustic alarm module 17, so that the mobile phone end or the PC end can also receive data monitored by each sensor and alarm information in real time, and can also set a preset reaction frame inclination angle alarm value and an anchor plate steel bar strain alarm value in the acoustic alarm module 17 through the mobile phone end or the PC end.
The device safely sets a double-channel defense line for the anchor pile method test, simultaneously detects the inclination angle of the anchor pile reaction frame body and the strain (tensile strain) of the anchor pile steel bars, and timely gives out early warning, so that the safety of the anchor pile method static load test is ensured.
When in actual use, when the inclination angle of the anchor pile reaction frame body reaches the inclination angle alarm value of the reaction frame, primary alarm is carried out, at the moment, the test is continued, the strain of the anchor pile steel bars 11 monitored by the strain gauge 9 is focused, when the strain value of the anchor pile steel bars 11 reaches the strain alarm value of the anchor plate steel bars, the alarm is carried out again, and the jack 5 is automatically controlled to stop pressurizing.
The anchor pile reaction frame with the safety detection system can ensure the safety of static load test of an anchor pile method, and can give out early warning before the potential danger of collapse of the anchor pile reaction frame, so that measures can be taken in time to ensure the safety of personnel and property.
The process of installing the self-contained safety detection system on the anchor pile reaction frame comprises the following steps:
the first step: mounting force sensor 8, displacement meter 7 and strain gauge 9
Placing a bearing plate 4 at the center of the top surface of the test pile 2, placing a jack 5 at the upper part of the bearing plate 4, and placing a force sensor 8 at the top of a hydraulic jack cylinder; fixing the reference beam 3 with the ground, and mounting a displacement meter 7 on the reference beam 3; strain gauges 9 are mounted on two symmetrical anchor pile bars 11 of each anchor pile 1, and the strain gauges 9 are attached to the anchor pile bars 11 by gluing or other means.
And a second step of: mounting anchor disc 12 and tilt sensor 10
The anchor disc 12 is provided with the inclination sensor 10, and the anchor disc 12 is fixed with the anchor pile steel bars 11.
And a third step of: installing the counterforce main beam 6 and the counterforce secondary beam 14
Firstly, a counterforce main beam 6 is installed, the center of the counterforce main beam 6 is aligned with the center of the test pile 2, temporary supports are arranged at two ends of the counterforce main beam 6, two counterforce secondary beams 14 are placed at two longitudinal ends of the counterforce main beam 6, and the center line of the counterforce secondary beams 14 is parallel to the center line of the anchor pile 1.
Fourth step: a fixed pull rod 13 for connecting the counterforce secondary beam 14 with the anchor disc 12
The pillow 15 is placed at the two ends of the counterforce secondary beam 14, and the pull rod 13 passes through the pillow 15 and the anchor disc 12 and is screwed by bolts.
Fifth step: setting technical parameters of the acoustic alarm module 17
And determining a reaction frame inclination angle alarm value and an anchor plate steel bar strain alarm value before the test, and presetting the reaction frame inclination angle alarm value and the anchor plate steel bar strain alarm value in the acoustic alarm module 17.
The foregoing is a further detailed description of the utility model in connection with specific embodiments, and it is not intended that the utility model be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.
Claims (7)
1. An anchor pile method reaction frame with a safety detection system, comprising: an anchor pile reaction frame body; the anchor pile reaction frame body comprises: anchor piles, test piles, bearing plates, jacks, counterforce main beams, counterforce secondary beams, pull rods, reference beams and anchor plates; the method is characterized in that: the system also comprises a safety detection system; the security detection system includes: strain gauges and tilt sensors;
installing strain gauges on more than one anchor pile steel bar of the anchor pile, and monitoring the strain of the corresponding anchor pile steel bar in real time in the test process; and the inclination angle sensor is arranged in the center of the anchor disc and used for monitoring the inclination angle of the anchor disc in the test process in real time.
2. The anchor pile method reaction frame with a safety detection system according to claim 1, wherein the safety detection system further comprises an alarm module; the strain gauge and the inclination sensor are respectively and electrically connected with the alarm module and are used for sending detected signals to the alarm module; and a reaction frame inclination angle alarm value and an anchor plate steel bar strain alarm value are preset in the alarm module.
3. The anchor pile method reaction frame with the safety detection system according to claim 2, wherein the strain gauge and the inclination sensor are internally provided with a wireless transmission module, and the wireless transmission module is in wireless connection with the alarm module.
4. A pile-on-pile reaction frame with a safety detection system according to claim 1, 2 or 3, wherein strain gauges are mounted on two pile reinforcements on each pile, symmetrical along the centre of the pile.
5. The anchoring pile method reaction frame with the safety detection system according to claim 1, 2 or 3, wherein an inclination sensor mounting groove is formed in the center of the anchor disc, and the inclination sensor is integrally mounted on the anchor disc.
6. The anchor pile method reaction frame with the safety detection system according to claim 1, 2 or 3, wherein a force sensor is arranged at the top of an oil cylinder of the jack.
7. An anchor pile method reaction frame with a safety detection system according to claim 1, 2 or 3, wherein a displacement meter is mounted on a foundation beam of the anchor pile reaction frame body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322401845.9U CN221095231U (en) | 2023-09-05 | 2023-09-05 | Anchor pile method reaction frame with safety detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322401845.9U CN221095231U (en) | 2023-09-05 | 2023-09-05 | Anchor pile method reaction frame with safety detection system |
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| Publication Number | Publication Date |
|---|---|
| CN221095231U true CN221095231U (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322401845.9U Active CN221095231U (en) | 2023-09-05 | 2023-09-05 | Anchor pile method reaction frame with safety detection system |
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| Country | Link |
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| CN (1) | CN221095231U (en) |
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2023
- 2023-09-05 CN CN202322401845.9U patent/CN221095231U/en active Active
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