CN111189700A - A kind of ground anchor pullout resistance testing device and method - Google Patents
A kind of ground anchor pullout resistance testing device and method Download PDFInfo
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- CN111189700A CN111189700A CN201911372580.6A CN201911372580A CN111189700A CN 111189700 A CN111189700 A CN 111189700A CN 201911372580 A CN201911372580 A CN 201911372580A CN 111189700 A CN111189700 A CN 111189700A
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- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 61
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 17
- 230000005283 ground state Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 8
- 239000002689 soil Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
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- 238000004873 anchoring Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
本发明涉及一种地锚抗拔力检测试验装置，所述装置包括：滑动机构、伸缩支撑机构、钢丝绳(8)、测力装置和起重装置，所述伸缩支撑机构具有一定高度，所述滑动机构转动设置在所述伸缩支撑机构的上部，所述钢丝绳(8)连接待检测地锚(6)后越过所述滑动机构上部，然后依次连接测力装置和起重装置的一端，所述起重装置的另一端与地面固定，所述测力装置在所述起重装置提供的收紧力下测试待检测地锚(6)的抗拔力；本装置通过滑动机构将抗拔力载荷转移至地面，并可在地面加载和读取载荷数值，并且，采用伸缩支撑机构，可独立调整高度，可适应试验地点复杂地形。
The invention relates to a test device for detecting the pull-out resistance of ground anchors. The device comprises: a sliding mechanism, a telescopic support mechanism, a wire rope (8), a force measuring device and a lifting device, the telescopic support mechanism has a certain height, and the The sliding mechanism is rotatably arranged on the upper part of the telescopic support mechanism, the wire rope (8) is connected to the ground anchor (6) to be detected and then crosses the upper part of the sliding mechanism, and then is connected to one end of the force measuring device and the lifting device in sequence, the said The other end of the lifting device is fixed to the ground, and the force measuring device tests the pullout resistance of the ground anchor (6) to be tested under the tightening force provided by the lifting device; the device loads the pullout resistance through the sliding mechanism It can be transferred to the ground, and the load value can be loaded and read on the ground. Moreover, the telescopic support mechanism is adopted, and the height can be adjusted independently, which can adapt to the complex terrain of the test site.
Description
Technical Field
The invention relates to the technical field of ground anchor pulling resistance detection tests, in particular to a ground anchor pulling resistance detection test device and method.
Background
The ground anchor is a temporary anchoring tool for power transmission line construction, is used for fixing a winching mill, a tension machine, a steering tackle, a temporary stay wire and the like, and can be divided into a rigid rod ground anchor and a ship-shaped ground anchor (a plate-type ground anchor) according to the classification of the types;
when the rigid rod ground anchor is used, the ground anchor is screwed into the ground through rotation, and the pulling resistance is generated through the interaction of the self weight of a soil body and the shearing resistance of a soil layer and the helical blade of the ground anchor, so that the fixing effect is achieved; when the ship-shaped ground anchor (plate-type ground anchor) is used, the ground anchor is buried into a ground anchor pit with a certain depth, a steel strand or a steel wire rope fixed on the ground anchor is obliquely led out from a pre-dug pavement, and the load is borne after filling and tamping.
The uplift resistance of the ground anchor is a main performance parameter, the uplift resistance performance of the ground anchor provides fixed and stable pulling force for other equipment, the ground anchor is arranged below the ground, the uplift resistance of the ground anchor is realized by the structural strength of the ground anchor body and the interaction with a soil layer, the use amount of the ground anchor in construction is large, whether the uplift resistance meets the design requirement or not is judged, and the important effect is achieved on the stress state of the construction equipment on the ground.
In the prior art, a special detection test device for detecting the pulling resistance of the earth anchor does not exist in the industry, and based on the problems, the invention provides the device and the method for detecting the pulling resistance of the earth anchor, which can be widely applied to the process of earth anchor burying construction operation.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a test device for detecting the pulling resistance of a ground anchor.
The technical scheme provided by the invention is as follows:
the utility model provides an earth anchor withdrawal resistance detection test device which characterized in that: the device comprises: the device comprises a sliding mechanism, a telescopic supporting mechanism, a steel wire rope (8), a force measuring device and a hoisting device;
the telescopic supporting mechanism has a certain height, and the sliding mechanism is rotatably arranged at the upper part of the telescopic supporting mechanism;
the steel wire rope (8) is connected with a ground anchor (6) to be detected and then crosses the upper part of the sliding mechanism, and then is sequentially connected with one end of the force measuring device and one end of the hoisting device; the other end of the hoisting device is fixed with the ground;
the force measuring device is used for testing the anti-pulling force of the ground anchor (6) to be tested under the tightening force provided by the hoisting device.
Preferably, the sliding mechanism is a guide pulley (1).
Preferably, the telescopic support mechanism comprises 3 telescopic legs (4); each telescopic supporting leg (4) is divided into an upper section and a lower section and is installed in a nesting mode.
Preferably, a guide pulley support (2) and a bearing platform (3) are further arranged between the telescopic supporting mechanism and the guide pulley (1);
the guide pulley support (2) is welded on the bearing table (3); the guide pulley (1) is connected with the guide pulley support (2) through a pin shaft.
Preferably, the device further comprises three support feet (5);
each supporting leg (5) has a certain area and is respectively installed on the lower part of each telescopic supporting leg (4) through a bolt.
Preferably, the force measuring device is a tension meter (9), and the hoisting device is a lever hoist (10).
Based on the same invention concept, the invention also provides a method for detecting and testing the pullout resistance of the ground anchor, which is characterized by comprising the following steps: adjusting a certain height of a telescopic supporting mechanism, wherein a sliding mechanism is rotatably arranged at the upper part of the telescopic supporting mechanism;
one end of a steel wire rope (8) is connected with a ground anchor (6) to be detected, so that the steel wire rope (8) crosses a sliding mechanism to be sequentially connected with a force measuring device and a hoisting device, and the other end of the hoisting device is fixed with the ground;
and under the tightening force provided by the hoisting device, the force measuring device tests the anti-pulling force of the ground anchor (6) to be detected.
Preferably, the adjusting the telescopic supporting mechanism to a certain height includes:
three telescopic supporting legs (4) of the telescopic supporting mechanism are fixedly installed in a nesting mode, and the height of the telescopic supporting legs (4) is adjusted according to the test ground state.
Preferably, the force measuring device tests the anti-pulling force of the ground anchor (6) to be tested under the tightening force provided by the hoisting device, and the method comprises the following steps:
adjusting the relative position of the uplift force detection test device and the ground anchor (6) to be detected, measuring the included angle between the steel wire rope (8) and the ground to 45 degrees, operating the lever block (10) to tighten up the steel wire rope (8), increasing the tension of the steel wire rope (8) and observing the tension meter (9), and acquiring the required detection value.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a ground anchor pulling resistance detection test device, which comprises: the device comprises a sliding mechanism, a telescopic supporting mechanism, a steel wire rope (8), a force measuring device and a hoisting device, wherein the telescopic supporting mechanism has a certain height, the sliding mechanism is rotatably arranged on the upper portion of the telescopic supporting mechanism, the steel wire rope (8) is connected with a ground anchor (6) to be detected and then passes over the upper portion of the sliding mechanism, then the sliding mechanism is sequentially connected with one ends of the force measuring device and the hoisting device, the other end of the hoisting device is fixed with the ground, the force measuring device tests the uplift force of the ground anchor (6) to be detected under the tightening force provided by the hoisting device, the device transfers the uplift force load to the ground through the sliding mechanism, can load and read the load value on the ground, and can independently adjust the height by adopting the telescopic supporting mechanism and adapt to the complex terrain of a.
2. The invention provides a ground anchor pulling resistance detection test device, which adopts pin shafts or bolts for connection of parts, and has the advantages of convenient disassembly and assembly and good portability during transportation.
3. The invention provides a test method for detecting the pullout resistance of a ground anchor, which can realize the detection and verification of the pullout resistance of the ground anchor in multiple angles by matching with a lever block (10) and a tension meter (9), eliminates the risk factor of the pullout of the ground anchor under stress, and improves the safety and reliability of construction operation.
4. The invention provides a test device for detecting the pullout resistance of a ground anchor, which adopts a high-strength steel structure, is not easy to deform and can be repeatedly used, can meet the requirements of 3t, 5t and other standard pullout resistance tests commonly used in construction, and can accurately detect the pullout resistance of the ground anchor.
5. The invention provides a test device for detecting the pulling resistance of a ground anchor, which adopts three-leg supporting legs, has good stability, can independently adjust the height and can adapt to complex terrains of test sites.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a device for testing the pullout resistance of a ground anchor according to the present invention;
FIG. 2 is a schematic diagram of the arrangement of the anti-pulling force test of the ground anchor according to the present invention;
in the figure: 1-guide pulley, 2-guide pulley support, 3-bearing platform, 4-telescopic supporting leg, 5-supporting foot, 6-ground anchor to be detected, 7-fixed ground anchor, 8-steel wire rope, 9-tension meter and 10-lever block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in figures 1 and 2, the device comprises 1-guide pulley, 2-guide pulley support, 3-bearing platform, 4-telescopic supporting leg, 5-supporting leg, 6-ground anchor to be detected, 7-fixed ground anchor, 8-steel wire rope, 9-tension meter and 10-lever hoist.
The invention provides an anchor withdrawal resistance detection test device, which comprises: the device comprises a sliding mechanism, a telescopic supporting mechanism, a steel wire rope 8, a force measuring device and a hoisting device;
the telescopic supporting mechanism has a certain height, and the sliding mechanism is rotatably arranged at the upper part of the telescopic supporting mechanism;
the steel wire rope 8 is connected with the ground anchor 6 to be detected, then crosses the upper part of the sliding mechanism, and is sequentially connected with one end of the force measuring device and one end of the hoisting device; the other end of the hoisting device is fixed with the ground;
and the force measuring device is used for testing the anti-pulling force of the ground anchor 6 to be detected under the tightening force provided by the hoisting device.
The device is mostly connected by adopting a pin shaft or a bolt, is convenient to disassemble and assemble during transportation, has good portability, and can accurately detect the pulling resistance of the ground anchor.
Moreover, the device adopts a high-strength steel structure, the bearing load is not easy to deform and can be repeatedly used, and the pulling resistance test requirements of the common ground anchors with the specifications of 3t, 5t and the like for construction can be met.
Wherein the sliding mechanism is a guide pulley 1;
the telescopic supporting mechanism comprises 3 telescopic supporting legs 4; each telescopic supporting leg 4 is provided with an upper section and a lower section, and the device can stand stably on uneven ground by being installed in a nested manner;
a guide pulley support 2 and a bearing platform 3 are also arranged between the telescopic supporting mechanism and the guide pulley 1;
the guide pulley support 2 is welded on the bearing table 3; the guide pulley 1 is connected with the guide pulley support 2 through a pin shaft.
The device further comprises: supporting legs 5;
each supporting leg 5 has a certain area and is used for increasing the grounding area of the telescopic supporting leg 4 and reducing the phenomenon that the supporting leg falls into the ground due to the overlarge pressure of the device;
the support legs 5 are respectively mounted to the lower portion of each of the telescopic legs 4 by bolts.
Wherein the force measuring device is a tension meter 9, and the hoisting device is a lever block 10;
in addition, the device can test the anti-pulling force of the ground anchor, transfer the anti-pulling force load to the ground through the guide pulley 1, load and read the load value on the ground, and the device adopts the tripod legs, has good stability, can independently adjust the height and can adapt to the complex terrain of a test site.
Example 2
Based on the same invention concept, the invention also provides a method for detecting and testing the pullout resistance of the ground anchor, which is characterized by comprising the following steps:
adjusting a certain height of a telescopic supporting mechanism, wherein a sliding mechanism is rotatably arranged at the upper part of the telescopic supporting mechanism;
connecting one end of a steel wire rope 8 with a ground anchor 6 to be detected, enabling the steel wire rope 8 to cross a sliding mechanism to be sequentially connected with a force measuring device and a hoisting device, and fixing the other end of the hoisting device with the ground;
and under the tightening force provided by the hoisting device, the force measuring device tests the anti-pulling force of the ground anchor 6 to be detected.
The supporting mechanism that will stretch out and draw back adjusts take the altitude, includes:
the three telescopic supporting legs 4 of the telescopic supporting mechanism are fixedly installed in a nesting mode, and the height of the telescopic supporting legs 4 is adjusted according to the test ground state.
The force measuring device tests the anti-pulling force of the ground anchor 6 to be detected under the tightening force provided by the hoisting device, and the method comprises the following steps:
adjusting the relative position of the uplift force detection test device and the ground anchor 6 to be detected, measuring the included angle between the steel wire rope 8 and the ground to 45 degrees, operating the lever block 10 to tighten the steel wire rope 8, increasing the tension of the steel wire rope 8, observing the tension meter 9, and acquiring the required detection value.
In addition, the method can realize multi-angle ground anchor pulling resistance detection and verification by matching with the lever block 10 and the tension meter 9, eliminates risk factors of the ground anchor being pulled out under stress, and improves the safety and reliability of construction operation.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention, and those skilled in the art will appreciate that various modifications and changes can be made to the present invention. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention is included in the scope of the claims of the present invention filed as filed.
Claims (9)
1. The utility model provides an earth anchor withdrawal resistance detection test device which characterized in that, the device includes: the device comprises a sliding mechanism, a telescopic supporting mechanism, a steel wire rope (8), a force measuring device and a hoisting device;
the telescopic supporting mechanism has a certain height, and the sliding mechanism is rotatably arranged at the upper part of the telescopic supporting mechanism;
the steel wire rope (8) is connected with a ground anchor (6) to be detected and then crosses the upper part of the sliding mechanism, and then is sequentially connected with one end of the force measuring device and one end of the hoisting device; the other end of the hoisting device is fixed with the ground;
the force measuring device is used for testing the anti-pulling force of the ground anchor (6) to be tested under the tightening force provided by the hoisting device.
2. Device according to claim 1, characterized in that the sliding mechanism is a guide pulley (1).
3. The device according to claim 1, characterized in that said telescopic support means comprise 3 telescopic legs (4); each telescopic supporting leg (4) is divided into an upper section and a lower section and is installed in a nesting mode.
4. The device according to claim 2, characterized in that a guide pulley support (2) and a bearing platform (3) are arranged between the telescopic supporting mechanism and the guide pulley (1);
the guide pulley support (2) is welded on the bearing table (3); the guide pulley (1) is connected with the guide pulley support (2) through a pin shaft.
5. The device according to claim 1, characterized in that it further comprises three support feet (5);
each supporting leg (5) has a certain area and is respectively installed on the lower part of each telescopic supporting leg (4) through a bolt.
6. A device according to claim 1, characterized in that the force measuring device is a tensile force meter (9) and the hoisting device is a lever block (10).
7. A method for detecting and testing the pullout resistance of a ground anchor is characterized by comprising the following steps:
adjusting a certain height of a telescopic supporting mechanism, wherein a sliding mechanism is rotatably arranged at the upper part of the telescopic supporting mechanism;
one end of a steel wire rope (8) is connected with a ground anchor (6) to be detected, so that the steel wire rope (8) crosses a sliding mechanism to be sequentially connected with a force measuring device and a hoisting device, and the other end of the hoisting device is fixed with the ground;
and under the tightening force provided by the hoisting device, the force measuring device tests the anti-pulling force of the ground anchor (6) to be detected.
8. The method of claim 7, wherein said adjusting the telescoping support mechanism to a height comprises:
three telescopic supporting legs (4) of the telescopic supporting mechanism are fixedly installed in a nesting mode, and the height of the telescopic supporting legs (4) is adjusted according to the test ground state.
9. Method according to claim 7, wherein the force measuring device tests the pullout resistance of the earth anchor (6) to be tested under the tightening force provided by the hoisting device, comprising:
adjusting the relative position of the uplift force detection test device and the ground anchor (6) to be detected, measuring the included angle between the steel wire rope (8) and the ground to 45 degrees, operating the lever block (10) to tighten up the steel wire rope (8), increasing the tension of the steel wire rope (8) and observing the tension meter (9), and acquiring the required detection value.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911372580.6A CN111189700A (en) | 2019-12-27 | 2019-12-27 | A kind of ground anchor pullout resistance testing device and method |
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| CN201911372580.6A CN111189700A (en) | 2019-12-27 | 2019-12-27 | A kind of ground anchor pullout resistance testing device and method |
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| CN111189700A true CN111189700A (en) | 2020-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114354355A (en) * | 2021-12-29 | 2022-04-15 | 武昌船舶重工集团有限公司 | Stern anchor frame overload test method |
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