CN220318607U - Straight-line type distributed anchor pile method foundation pile static load test system - Google Patents
Straight-line type distributed anchor pile method foundation pile static load test system Download PDFInfo
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- CN220318607U CN220318607U CN202321857901.3U CN202321857901U CN220318607U CN 220318607 U CN220318607 U CN 220318607U CN 202321857901 U CN202321857901 U CN 202321857901U CN 220318607 U CN220318607 U CN 220318607U
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Abstract
The utility model discloses a static load test system for foundation piles by a straight-line type distributed anchor pile method, which comprises a jack, a straight-line type independent main beam, a counter-force frame and a real-time monitoring system for static force level of anchor pile displacement; the jack is arranged at the top of the test pile and is positioned below the straight independent main beam; the reaction frame comprises a force transmission upper beam, a force transmission lower beam and a telescopic connecting device, wherein the force transmission upper beam and the force transmission lower beam are respectively positioned above and below the straight independent main beams, the telescopic connecting device connects the force transmission upper beam and the force transmission lower beam, the vertical interval between the force transmission upper beam and the force transmission lower beam can be adjusted, and the force transmission lower beam is connected with a force transmission steel bar on an anchor pile. The foundation pile static load test system of the in-line distributed anchor pile method can reduce the in-out field transportation and erection of equipment, reduce the cost and increase the efficiency, avoid the defect that the test cannot be carried out due to the limitation of the size and the position of part of the field, and simultaneously avoid the condition that the test fails due to insufficient counter force caused by uneven stress, damage of the anchor pile and the like of the anchor pile in the traditional anchor pile method.
Description
Technical Field
The utility model relates to the technical field of foundation pile detection in constructional engineering, in particular to a static load test system for foundation piles by a straight-line-shaped distributed anchor pile method.
Background
The bearing capacity of the foundation pile is an important factor for ensuring the safety and normal use of the building. After foundation pile construction is completed, the bearing capacity of the foundation pile needs to be detected to verify whether the foundation pile can meet design requirements, so that the safety of a building is ensured. The main principle of foundation pile static load detection is to simulate the actual stress of an engineering foundation pile in the use process, and the bearing capacity of the foundation pile is tested by adopting an equivalent load loading mode. At present, the static load detection modes of foundation piles with more applications are as follows:
the traditional stacking reaction platform comprises a physical stacking reaction system (comprising stacking weights and reaction steel frames), a pressurizing system, a displacement measuring system and the like, and has the main defects that the required stacking physical body is large, the field plane space requirement is high, and the working surface of auxiliary hoisting equipment is large;
the traditional anchor pile method counterforce platform comprises an anchor pile counterforce system (comprising a plurality of anchor piles and counterforce steel frames), a pressurizing system, a displacement measuring system and the like, wherein the main defects of the traditional anchor pile method counterforce platform are lack of monitoring and relevant adjustment of the anchor piles, the conditions of uneven stress of the anchor piles, damage of the anchor piles and the like easily occur in the static load test process, counterforce is insufficient, and test failure is caused.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a foundation pile static load test system of a straight-line type distributed anchor pile method, reduce the in-out field transportation and erection of equipment, reduce the cost and increase the efficiency, avoid the defect that a test cannot be carried out due to the limitations of the size and the position of part of the field, and simultaneously avoid the condition that the test fails due to the insufficient counter force caused by uneven stress, damage of the anchor pile and the like of the traditional anchor pile method, thereby realizing quick and good completion of the foundation pile static load test.
The utility model adopts the following technical scheme:
the foundation pile static load test system comprises a jack, a straight-line independent girder, a reaction frame and an anchor pile displacement static level real-time monitoring system; the jack is arranged at the top of the test pile and is positioned below the straight independent main beam; the reaction frame comprises a force transmission upper beam, a force transmission lower beam and a telescopic connecting device, wherein the force transmission upper beam and the force transmission lower beam are respectively positioned above and below the straight independent main beam, the telescopic connecting device is respectively connected with the force transmission upper beam and the force transmission lower beam, the upper and lower intervals between the force transmission upper beam and the force transmission lower beam can be adjusted, and the force transmission lower beam is connected with a force transmission steel bar on an anchor pile.
Further, the counter-force frames are arranged in a plurality and distributed along the length direction of the linear independent main beams; the anchor piles are arranged in a plurality, are positioned on two sides of the test pile and are distributed in a straight shape.
Further, the reaction frames are in one-to-one correspondence with the anchor piles.
Further, the real-time monitoring system for the static level of the displacement of the anchor pile comprises a static level data acquisition device, wherein the static level data acquisition device is connected with a static level communicating pipe, and the static level communicating pipe is fixed on the anchor pile through a fixing device.
Further, the real-time monitoring system for the static level of the displacement of the anchor pile further comprises a real-time display device for displacement data and an automatic alarm device for displacement abnormality.
Further, the telescopic connecting device comprises a screw rod, an upper limit nut and a lower limit nut, wherein the upper end of the screw rod penetrates through the force transmission upper beam and is in threaded connection with the upper limit nut, and the lower end of the screw rod penetrates through the force transmission lower beam and is in threaded connection with the lower limit nut.
Further, the counter-force frame is provided with telescopic connecting devices on two sides of the straight-shaped independent main beams, so that screw rods are distributed on two sides of the straight-shaped independent main beams.
Further, a steel bar clamping groove is formed in the outer side edge of the force transmission lower beam, and the force transmission steel bars are buckled into the steel bar clamping groove.
Further, the upper end of the force transmission steel bar is welded with a short steel bar, and the force transmission steel bar is lapped to the top surface of the force transmission lower beam through the short steel bar.
Further, a backing plate is arranged at the top of the test pile, and the jack is placed on the backing plate.
Compared with the prior art, the utility model has the beneficial effects that:
the foundation pile static load test system for the in-line distributed anchor pile method provided by the utility model reduces the transportation and erection of equipment in and out of a field, reduces the cost and increases the efficiency, avoids the defect that the test cannot be carried out due to the limitation of the size and the position of part of the field, and simultaneously can avoid the condition that the test fails due to insufficient counter force caused by uneven stress, damage of the anchor pile and the like of the anchor pile in the traditional anchor pile method, thereby realizing quick and good completion of the foundation pile static load test.
Drawings
FIG. 1 is a schematic front view of a straight-line distributed anchor pile method foundation pile static load test system according to an embodiment of the present utility model;
FIG. 2 is a schematic side view of a static load test system for foundation piles according to an embodiment of the present utility model;
fig. 3 is a workflow diagram of an in-line distributed anchor pile method foundation pile static load test system according to an embodiment of the present utility model.
In the figure: 1. a jack; 2. a straight independent girder; 3. a reaction frame; 31. a force transmission upper beam; 32. a force-transmitting lower beam; 33. a screw; 34. an upper limit nut; 35. a lower limit nut; 4. the real-time monitoring system for the static level of the displacement of the anchor pile; 41. a static level data acquisition device; 42. a static level communicating pipe; 43. a fixing device; 5. testing piles; 51. a backing plate; 6. an anchor pile; 61. force transmission steel bars; 62. short steel bars.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
Referring to fig. 1, 2 and 3, the embodiment of the utility model provides a horizontal type distributed anchor pile method foundation pile static load test system, which comprises a jack 1, a horizontal type independent main beam 2, a counter-force frame 3 and an anchor pile displacement static level real-time monitoring system 4; the jack 1 is arranged at the top of the test pile 5 and is positioned below the linear independent main beam 2; the reaction frame 3 comprises a force transmission upper beam 31, a force transmission lower beam 32 and a telescopic connecting device, wherein the force transmission upper beam 31 and the force transmission lower beam 32 are respectively positioned above and below the linear independent main beam 2, the telescopic connecting device is respectively connected with the force transmission upper beam 31 and the force transmission lower beam 32, the vertical interval between the force transmission upper beam 31 and the force transmission lower beam 32 can be adjusted, and the force transmission lower beam 32 is connected with a force transmission steel bar 61 on the anchor pile 6. Further, the counter-force frames 3 are arranged in plurality and distributed along the length direction of the linear independent main beams 2; the anchor piles 6 are arranged in a plurality and are positioned at two sides of the test pile 5 and distributed in a straight shape, and the reaction frames 3 are connected with the anchor piles 6 in a one-to-one correspondence manner; wherein, can adopt a plurality of foundation piles that experimental stake is close to as the anchor stake, compare in the anchor stake of temporarily setting up additional, use manpower sparingly and consumptive material more, factor of safety is also higher.
In the in-line distributed anchor pile method foundation pile static load test system provided by the embodiment of the utility model, the functions of each component are as follows:
the jack 1 is used for jacking the straight independent main beam 2;
the straight independent main beam 2 is mainly responsible for transmitting the lifting force of the top of the test pile and the reaction force of the anchor pile 6, bearing the concentrated force load at the top of the test pile, bearing the concentrated load of the anchor pile reaction force transmitted by the reaction frame 3 and bearing the shearing force and the bending moment caused by the interaction of the concentrated forces;
the reaction frame 3 is mainly responsible for transmitting the reaction force provided by the anchor piles to the linear independent main beams 2, wherein the force transmission upper beam 31 is mainly responsible for transmitting the anchor pile reaction force transmitted by the telescopic connection device to the top of the linear independent main beams 2, the force transmission lower beam 32 is cooperated with the telescopic connection device to also be used for transmitting the anchor pile reaction force, and the telescopic connection device is used for realizing the adjustment of the reserved vertical space between the force transmission upper beam 31 and the force transmission lower beam 32, so that the deformation coordination of each connection point is achieved, and the uniform stress of each anchor pile is ensured;
and the real-time monitoring system 4 is used for realizing real-time monitoring of the vertical displacement of each anchor pile, judging whether the anchor pile is damaged or not, and timely avoiding the damage influence of the anchor pile.
Further, in the in-line distributed anchor pile method foundation pile static load test system according to the embodiment of the utility model, the anchor pile displacement static level real-time monitoring system 4 comprises a static level data acquisition device 41, the static level data acquisition device 41 is connected with a static level communicating pipe 42, and the static level communicating pipe 42 is fixed on the anchor pile 6 through a fixing device 43. The real-time monitoring system 4 for the displacement static level of the anchor pile further comprises a real-time displacement data display device and an automatic displacement abnormality alarm device; by the equipment, an alarm can be sent out rapidly when the displacement of the anchor pile is abnormal.
Further, in the in-line distributed anchor pile method foundation pile static load test system of the embodiment of the utility model, the telescopic connecting device comprises a screw 33, an upper limit nut 34 and a lower limit nut 35, the upper end of the screw 33 passes through the force transmission upper beam 31 and is in threaded connection with the upper limit nut 34, and the lower end of the screw 33 passes through the force transmission lower beam 32 and is in threaded connection with the lower limit nut 35; the screw 33 may be a round steel screw.
Further, in the straight-line distributed anchor pile method foundation pile static load test system according to the embodiment of the utility model, the reaction frames 3 are provided with telescopic connecting devices on two sides of the straight-line independent main beams 2, so that screw rods 33 are distributed on two sides of the straight-line independent main beams 2. So set up, screw 33 distributes in the independent girder 2 both sides of style of calligraphy, can restrict the plane of girder and twist, plays the effect that increases the stability outside the girder plane.
Further, in the in-line distributed anchor pile method foundation pile static load test system of the embodiment of the utility model, the outer side edge of the force transmission lower beam 32 is provided with a steel bar clamping groove, and the force transmission steel bars 61 of the anchor piles 6 are connected into the steel bar clamping groove; in addition, a short bar 62 is welded to the upper end of the force-transmitting bar 61, and is overlapped to the top surface of the force-transmitting lower beam 32 by the short bar 62.
Further, in the in-line distributed anchor pile method foundation pile static load test system of the embodiment of the utility model, the top of the test pile 5 is provided with a backing plate 51, and the jack 1 is placed on the backing plate 51; plays a role in protecting the test pile.
The main installation steps of the embodiment of the utility model are as follows: firstly, a counter-force frame 3 is arranged on a straight-shaped independent main beam 2, the straight-shaped independent main beam 2 and the counter-force frame 3 are hoisted above an anchor pile 6, a force transmission steel bar 61 of the anchor pile 6 is overlapped with a force transmission lower beam 32, and finally, an anchor pile displacement static force level real-time monitoring system 4 is arranged.
The working principle and flow of the static load test in the embodiment of the utility model are as follows: after the jack 1 is lifted for a certain distance, the straight-line-shaped independent main beam 2 is in contact with the jack 1 and bears force, the straight-line-shaped independent main beam 2 transmits the force to the counter-force frame 3, the counter-force frame 3 transmits the force to the anchor piles 6, the anchor piles 6 deform to a certain extent after being stressed, real-time monitoring is carried out through the anchor pile displacement static level real-time monitoring system 4 and the like, whether adjustment is needed through the telescopic connecting device is judged, and the stress uniformity of the anchor piles is ensured; when the anchor pile with overlarge displacement exists, the upper limit nut 34 of the pile position is loosened, and meanwhile, for the anchor pile with smaller displacement on the same side, the upper limit nut 34 of the pile position can be tightened; and when the displacement value of each anchor pile is smaller and stable, continuing to pressurize until the test is completed.
In summary, the in-line distributed anchor pile method foundation pile static load test system provided by the embodiment of the utility model can reduce the in-out transportation and erection of equipment, reduce the cost and increase the efficiency, and avoid the defect that the test cannot be carried out due to the limitation of the size and the position of part of the field; meanwhile, the counterforce frame of the test system can adjust the stress of the anchor pile through the telescopic connection device, and the real-time monitoring of the displacement of the anchor pile is combined, so that the condition that the test fails due to insufficient counterforce caused by uneven stress of the anchor pile, damage of the anchor pile and the like in the traditional anchor pile method can be avoided, and the foundation pile static load test can be completed quickly and well.
The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.
Claims (10)
1. A character-shaped distributed anchor pile method foundation pile static load test system is characterized in that: the real-time monitoring system comprises a jack, a straight independent main beam, a counter-force frame and an anchor pile displacement static level real-time monitoring system; the jack is arranged at the top of the test pile and is positioned below the straight independent main beam; the reaction frame comprises a force transmission upper beam, a force transmission lower beam and a telescopic connecting device, wherein the force transmission upper beam and the force transmission lower beam are respectively positioned above and below the straight independent main beam, the telescopic connecting device is respectively connected with the force transmission upper beam and the force transmission lower beam, the upper and lower intervals between the force transmission upper beam and the force transmission lower beam can be adjusted, and the force transmission lower beam is connected with a force transmission steel bar on an anchor pile.
2. The in-line distributed anchor pile method foundation pile static load test system according to claim 1, wherein: the counter-force frames are arranged in a plurality and distributed along the length direction of the linear independent main beams; the anchor piles are arranged in a plurality, are positioned on two sides of the test pile and are distributed in a straight shape.
3. The in-line distributed anchor pile method foundation pile static load test system according to claim 2, wherein: and the reaction frames are in one-to-one correspondence with the anchor piles.
4. The in-line distributed anchor pile method foundation pile static load test system according to claim 1, wherein: the real-time monitoring system for the static level of the displacement of the anchor pile comprises a static level data acquisition device, wherein the static level data acquisition device is connected with a static level communicating pipe, and the static level communicating pipe is fixed on the anchor pile through a fixing device.
5. The in-line distributed anchor pile method foundation pile static load test system according to claim 4, wherein: the real-time monitoring system for the static level of the displacement of the anchor pile further comprises a real-time displacement data display device and an automatic displacement abnormality alarm device.
6. The in-line distributed anchor pile method foundation pile static load test system according to claim 1, wherein: the telescopic connecting device comprises a screw rod, an upper limit nut and a lower limit nut, wherein the upper end of the screw rod penetrates through the force transmission upper beam and is in threaded connection with the upper limit nut, and the lower end of the screw rod penetrates through the force transmission lower beam and is in threaded connection with the lower limit nut.
7. The in-line distributed anchor pile method foundation pile static load test system of claim 6, wherein: the reaction frame is provided with telescopic connecting devices on two sides of the straight-shaped independent main beams, so that screw rods are distributed on two sides of the straight-shaped independent main beams.
8. The in-line distributed anchor pile method foundation pile static load test system according to claim 1, wherein: the outer side edge of the force transmission lower beam is provided with a steel bar clamping groove, and the force transmission steel bars are buckled into the steel bar clamping groove.
9. The in-line distributed anchor pile method foundation pile static load test system of claim 8, wherein: the upper end of the force transmission steel bar is welded with a short steel bar, and the upper end of the force transmission steel bar is lapped to the top surface of the force transmission lower beam through the short steel bar.
10. The in-line distributed anchor pile method foundation pile static load test system according to claim 1, wherein: the top of test stake is provided with the backing plate, the jack is placed on the backing plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321857901.3U CN220318607U (en) | 2023-07-14 | 2023-07-14 | Straight-line type distributed anchor pile method foundation pile static load test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321857901.3U CN220318607U (en) | 2023-07-14 | 2023-07-14 | Straight-line type distributed anchor pile method foundation pile static load test system |
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| CN202321857901.3U Active CN220318607U (en) | 2023-07-14 | 2023-07-14 | Straight-line type distributed anchor pile method foundation pile static load test system |
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