CN113863293A - Auxiliary device and method for fixing anchor pile - Google Patents
Auxiliary device and method for fixing anchor pile Download PDFInfo
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- CN113863293A CN113863293A CN202111204941.3A CN202111204941A CN113863293A CN 113863293 A CN113863293 A CN 113863293A CN 202111204941 A CN202111204941 A CN 202111204941A CN 113863293 A CN113863293 A CN 113863293A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002689 soil Substances 0.000 claims abstract description 61
- 238000004873 anchoring Methods 0.000 claims abstract description 50
- 238000003466 welding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/54—Piles with prefabricated supports or anchoring parts; Anchoring piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
- E02D5/803—Ground anchors with pivotable anchoring members
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an auxiliary device and a method for fixing an anchor pile, and the auxiliary device comprises a first fixing component and a second fixing component, wherein the first fixing component and the second fixing component are fixedly connected through bolts, the first fixing component and the second fixing component are fixedly connected to form a regular polygon auxiliary device, one side of the first fixing component, which is fixedly connected with the second fixing component, is provided with a semicircular hole for accommodating the anchor pile, and the two semicircular holes form a circular hole for fixing the anchor pile; also provides a using method, after the anchor pile is vertically driven into the ground, a fixing device is arranged on the outer diameter of the anchor pile on the ground; screwing an auxiliary anchor rod into the reserved hole of the auxiliary device; and acquiring the quantity of the screwed auxiliary anchor rods according to the soil quality of the soil and the required anchoring force of the assembled electric pole. The invention can determine the number of the auxiliary anchor rods screwed according to the environment soil quality and the required anchoring force condition, and improves the working efficiency of setting the anchor pile on the premise of obtaining reliable anchoring.
Description
Technical Field
The invention relates to the field of electric power construction, in particular to an auxiliary device and method for fixing an anchor pile.
Background
Electric power is an energy source using electric energy as power. In the 70 s of the 19 th century, the invention and application of electric power opened up the second industrialized climax. The technology becomes one of three technological revolution which occur in the world since 18 th century of human history, and the technology changes the lives of people. Even in the current internet era, there is still a continuously increasing demand for electric power because computers, household appliances and other products using more electric power are invented. It is undeniable that the continuous emergence of new technologies makes electric power a necessity for people. The large-scale power system appearing in the 20 th century is one of the most important achievements in the history of human engineering science, and is a power generation and consumption system consisting of links of power generation, power transmission, power transformation, power distribution, power utilization and the like. In the current internet era, we still have a continuously increasing demand for electric power because we invent more products using electric power, such as computers, household appliances, and the like. The pole is the bridge of electricity, lets the electricity transport each place, and we common pole have wooden system pole, has the cement pole, and their height differs, stands upright in the plain mountain, spreads all over around people. The general category of poles is many, as is common: the concrete pole is made of concrete and steel bars or steel wires.
The single-rod anchor pile is commonly used when engineering projects such as a power distribution network carry and assemble electric poles at present, the characteristics and the performance of the actual situation of the arrangement of the anchor pile are analyzed, the defect that the anchoring force of the existing single-rod anchor pile is very large is found, and a symptom node generating problems is found through analysis;
the anchor pile aims to solve the problem that the anchoring performance of the existing facilities is not enough, the safety and the reliability of the anchor pile are improved, and the problem is in urgent need of research at present.
Disclosure of Invention
The invention solves the technical problem of the defect of large anchoring force of a single-rod anchor pile, and aims to provide an auxiliary device and a method for fixing the anchor pile.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides an auxiliary device for anchor pile is fixed, includes the fixed subassembly of first fixed subassembly and second, the fixed subassembly of first fixed subassembly and second passes through bolt fixed connection, form regular polygon's auxiliary device behind the fixed subassembly of first fixed subassembly and the fixed subassembly of second, one side of the fixed subassembly of first fixed subassembly and second is equipped with the semi-circular hole that is used for holding the anchor pile, two the semi-circular hole forms the circular port that is used for fixed anchor pile.
The invention provides a fixing device, wherein a semicircular hole for accommodating an anchor pile is formed in one side of a first fixing component, which is required to be overlapped with a second fixing component, a plurality of screw holes are formed in the overlapped part, the first fixing component and the second fixing component are combined through a bolt and the screw holes, the two semicircular holes are used for clamping and fixing the anchor pile under the action of the bolt, the anchoring force of the anchor pile is improved, and the condition that the anchor pile does not incline when an electric pole is assembled is ensured.
Furthermore, the first fixing assembly and the second fixing assembly are identical in structure, the first fixing assembly comprises a plurality of isosceles triangle members, and vertex angles of the isosceles triangle members sequentially surround the semicircular hole in an integrated forming design to form the first fixing assembly and the second fixing assembly.
Further, the isosceles triangle component is provided with a strip-shaped block, and the strip-shaped block is positioned on a median line of the isosceles triangle component.
Furthermore, the isosceles triangle is provided with a preformed hole for screwing the auxiliary anchor rod, and the preformed hole is positioned at the base angle of the isosceles triangle and the central point of the strip-shaped block.
Furthermore, the preformed hole is connected with the bar-shaped blocks in a welding mode, and the preformed hole is connected with the base angles of the isosceles triangle components in a welding mode.
An auxiliary method for anchoring an anchor pile is based on the auxiliary device for anchoring the anchor pile, and comprises the following steps: s1, vertically driving the anchor pile into the ground, and then installing a fixing device on the outer diameter of the anchor pile on the ground;
s2, screwing an auxiliary anchor rod into the reserved hole of the fixing device;
and S3, acquiring the number of the screwed auxiliary anchor rods according to the soil quality of the soil and the anchoring force required by assembling the electric pole.
The invention provides a using method of a fixing device, which determines the number of screwed auxiliary anchor rods according to the environment soil quality and the required anchoring force condition, and improves the working efficiency on the premise of obtaining reliable anchoring force.
Further, the specific steps of acquiring the number of the auxiliary anchor rods screwed in are as follows:
acquiring soil humidity, and acquiring soil fixation according to the soil humidity and the soil type;
acquiring the required applied anchoring force according to the soil fixation degree and the anchoring force required by assembling the electric pole;
and acquiring the anchoring force of a single auxiliary anchor rod, calculating the anchoring force of the single auxiliary anchor rod and the required applied anchoring force, and acquiring the number of required anchor rods.
Further, a soil humidity sensor is adopted to measure the soil humidity 1.5m below the ground, and the soil fixation degree of different types of soil under the same humidity is obtained according to the soil type.
Further, the fixing force of the soil is obtained according to the soil fixing degree, and the fixing force of the soil is subtracted from the anchoring force required by the assembled electric pole to obtain the anchoring force to be applied.
Further, dividing the anchoring force which needs to be applied by the anchoring force of a single auxiliary anchor rod to obtain the number of the needed anchor rods; and if the number of the anchor rods is not an integer, increasing the number of the needed anchor rods by one on the basis of the integer part.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a fixing device, which is characterized in that after an original single-rod anchor pile is driven into the ground, the fixing device is arranged on the outer diameter of the anchor pile flush with the ground, so that the full contact between an umbrella-shaped anchor pile mechanism and the ground is increased, the ground surface friction is increased, and the anchoring force is increased. The auxiliary anchor rod is screwed in the reserved hole in the fixing device, the combination degree of the fixing device and soil is increased, and the auxiliary anchor rod is of a self-tapping thread structure, so that the anchoring force is further increased.
2. The invention provides a method, which determines the number of the auxiliary anchor rods screwed according to the environment soil quality and the required anchoring force condition, and improves the working efficiency on the premise of obtaining reliable anchoring force.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a fixing device according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for using a fixture according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for obtaining a required auxiliary anchor rod according to an embodiment of the present invention;
reference numbers and corresponding part names in the drawings:
1. a circular hole; 2. a bolt; 3. a bar-shaped block; 4. holes are reserved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Examples
On the one hand, this embodiment provides an auxiliary device for anchor pile is fixed, as shown in fig. 1, including first fixed subassembly and the fixed subassembly of second, first fixed subassembly passes through bolt 2 fixed connection with the fixed subassembly of second, forms regular polygon's auxiliary device after first fixed subassembly and the fixed subassembly fixed connection of second, and one side of first fixed subassembly and the fixed subassembly fixed connection of second is equipped with the semi-circular hole that is used for holding the anchor pile, and two semi-circular holes form circular port 1 that is used for fixed anchor pile.
The invention provides a eight-diagram-shaped fixing device, wherein a semicircular hole for accommodating an anchor pile is formed in one side of a first fixing component, which is required to be superposed with a second fixing component, a plurality of screw holes are formed in the superposed part, the first fixing component is combined with the second fixing component through a bolt 2 and the screw holes, the two semicircular holes clamp and fix the anchor pile under the action of the bolt, the anchoring force of the anchor pile is improved, and the situation that the anchor pile does not incline when an electric pole is assembled is ensured.
Preferably, the first fixing assembly is the same as the second fixing assembly in structure, the first fixing assembly comprises a plurality of isosceles triangle members, and vertex angles of the isosceles triangle members sequentially surround the semicircular hole in an integrated forming design to form the first fixing assembly and the second fixing assembly. As shown in fig. 1, since the fixing device is formed by overlapping two components, the components have the same structure, and considering that the triangle has good stability, the apex angle of the triangle of the fixing component sequentially surrounds the semicircular hole to be integrally formed, and the waists of the four isosceles triangles can be sequentially welded together in a welding manner, so that the whole device forms an eight-diagram shape and is tiled on the ground.
Preferably, the isosceles triangle member is provided with a bar-shaped block 3, and the bar-shaped block 3 is positioned on the median line of the isosceles triangle member. The strip-shaped blocks 3 are welded on the isosceles triangle members or integrally formed, and are all used for improving the stability of the fixing device.
Preferably, the isosceles triangle is provided with a preformed hole 4 for screwing the auxiliary anchor rod, and the preformed hole 4 is positioned at the bottom angle of the isosceles triangle and the central point of the strip-shaped block. The preformed hole 4 is arranged between the side surface of the strip-shaped block 3 and two bottom angles of the isosceles triangle component, so that the anchoring force generated after the auxiliary anchor rod is screwed in is uniformly distributed on the whole fixing device, and the anchoring force of the anchor pile is further prompted.
Preferably, preformed hole 4 and bar piece 3 welded connection, preformed hole 4 and isosceles triangle component's base angle welded connection. The welding is in order to guarantee preformed hole 4 and fixing device's firm degree to prevent to drop at the in-process preformed hole 4 and the fixing device of assemblage pole, make the anchor power of anchor pile not enough, can't support the pole and stand required power.
In another aspect, the present embodiment provides an auxiliary method for anchor pile fixing, based on an auxiliary device for anchor pile fixing, as shown in fig. 2, including the following steps: s1, vertically driving the anchor pile into the ground, and then installing a fixing device on the outer diameter of the anchor pile on the ground;
s2, screwing an auxiliary anchor rod into the reserved hole of the fixing device;
and S3, acquiring the number of the screwed auxiliary anchor rods according to the soil quality of the soil and the anchoring force required by assembling the electric pole.
As for how to determine the number of the auxiliary anchoring rods to be screwed in, as shown in fig. 3, the specific steps of acquiring the number of the auxiliary anchoring rods to be screwed in are as follows:
step S310, acquiring soil humidity, and acquiring soil fixation according to the soil humidity and the soil type;
in step S320, acquiring an anchoring force required to be applied according to the soil fixation degree and the anchoring force required by assembling the electric pole;
in step S330, the anchoring force of a single auxiliary anchor rod is obtained, and the anchoring force of the single auxiliary anchor rod and the required applied anchoring force are calculated to obtain the number of required anchor rods.
Because the humidity of soil, the type of soil all is influential to the anchor power of anchor pile, for example, the soil when assemblage pole is yellow earth, because the viscidity of yellow earth self is stronger, therefore the stability of its soil itself is stronger, consequently need not too much in the quantity of wrong stock, can accomplish the assemblage work progress of pole, if soil is sandy soil type partially, then the stability of its own is lower, consequently need twist supplementary stock quantity increase.
And measuring the soil humidity of 1.5m below the ground by adopting a soil humidity sensor, and acquiring the soil fixation degree of different types of soil under the same humidity according to the soil type. Considering the fact that the bolt is screwed too deep, it takes too much time to take it out, and too deep may touch the rock, too shallow to function to provide effective fixing, so that the soil moisture 1.5m below the ground is measured by the soil moisture sensor.
And acquiring the self fixing force of the soil according to the soil fixing degree, and subtracting the self fixing force of the soil according to the anchoring force required by the assembled electric pole to acquire the anchoring force to be applied.
Dividing the anchoring force to be applied by the anchoring force of a single auxiliary anchor rod to obtain the number of the required anchor rods; and if the number of the anchor rods is not an integer, increasing the number of the needed anchor rods by one on the basis of the integer part. If the number of the anchor rods is even, the anchor rods are symmetrically screwed into the fixing device when being screwed into the preformed holes, if the number of the anchor rods is odd, the even number of the anchor rods are also screwed into the preformed holes, and the rest anchor rods are screwed into the preformed holes at corresponding positions according to the position condition of the electric pole during site construction. If the pole is on the left side of anchor pile, then in screwing the stock into the preformed hole of keeping away from pole one side, vice versa, the same.
The working principle is as follows: the invention provides a fixing device and a using method, wherein after an anchor pile is driven into the ground, the fixing device is arranged on the outer diameter of the anchor pile on the ground; screwing an auxiliary anchor rod into the reserved hole of the fixing device; the quantity of twisting the auxiliary anchor rod is obtained with the required anchor power of assemblage pole according to the soil property of soil, fixes the anchor pile through fixing device, and the quantity of reasonable control twisting the auxiliary anchor rod reaches and just satisfies the required anchor power of anchor pile in the use.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides an auxiliary device for anchor pile is fixed, characterized in that, includes first fixed subassembly and the fixed subassembly of second, first fixed subassembly passes through bolt (2) fixed connection with the fixed subassembly of second, first fixed subassembly forms regular polygon's auxiliary device after fixed connection with the fixed subassembly of second, first fixed subassembly is equipped with the semi-circular hole that is used for holding the anchor pile on one side of the fixed connection of second fixed subassembly, two the semi-circular hole forms circular port (1) that is used for fixed anchor pile.
2. An auxiliary device for anchor pile fixing according to claim 1, wherein the first fixing assembly is identical in structure to the second fixing assembly, the first fixing assembly comprises a plurality of isosceles triangular members, and the top corners of the isosceles triangular members are sequentially integrally formed around the semicircular hole to form the first fixing assembly and the second fixing assembly.
3. An auxiliary device for anchorage of an anchor pile according to claim 2, wherein the isosceles triangular member is provided with a bar block (3), the bar block (3) being located on the median line of the isosceles triangular member.
4. An auxiliary device for fixing an anchor pile according to claim 3, wherein the isosceles triangle is provided with a prepared hole (4) for screwing in an auxiliary anchor rod, and the prepared hole (4) is positioned at the bottom corner of the isosceles triangle and the central point of the strip-shaped block.
5. An auxiliary device for anchor pile fixing according to claim 4, wherein the prepared hole (4) is welded with the bar block (3), and the prepared hole (4) is welded with the base angle of the isosceles triangle component.
6. An auxiliary method for anchor pile fixing, which is an auxiliary device for anchor pile fixing based on any one of claims 1 to 5, and comprises the following steps:
s1, vertically driving the anchor pile into the ground, and then installing a fixing device on the outer diameter of the anchor pile on the ground;
s2, screwing an auxiliary anchor rod into the reserved hole of the fixing device;
and S3, acquiring the number of the screwed auxiliary anchor rods according to the soil quality of the soil and the anchoring force required by assembling the electric pole.
7. An auxiliary method for anchor pile fixing according to claim 6, wherein the specific steps of obtaining the number of the auxiliary anchor rods to be screwed in are as follows:
acquiring soil humidity, and acquiring soil fixation according to the soil humidity and the soil type;
acquiring the required applied anchoring force according to the soil fixation degree and the anchoring force required by assembling the electric pole;
and acquiring the anchoring force of a single auxiliary anchor rod, calculating the anchoring force of the single auxiliary anchor rod and the required applied anchoring force, and acquiring the number of required anchor rods.
8. An auxiliary method for fixing an anchor pile according to claim 7, wherein a soil moisture sensor is used for measuring the soil moisture 1.5m below the ground, and the soil fixing degree of different types of soil under the same moisture is obtained according to the soil type.
9. An auxiliary method for fixing an anchor pile according to claim 8, wherein the self-fixing force of the soil is obtained according to the soil fixing degree, and the anchoring force to be applied is obtained by subtracting the self-fixing force of the soil from the anchoring force required by the assembled electric pole.
10. An auxiliary method for fixing an anchor pile according to claim 9, wherein the required number of anchor rods is obtained by dividing the anchoring force to be applied by the anchoring force of a single auxiliary anchor rod; and if the number of the anchor rods is not an integer, increasing the number of the needed anchor rods by one on the basis of the integer part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111204941.3A CN113863293A (en) | 2021-10-15 | 2021-10-15 | Auxiliary device and method for fixing anchor pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111204941.3A CN113863293A (en) | 2021-10-15 | 2021-10-15 | Auxiliary device and method for fixing anchor pile |
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| CN113863293A true CN113863293A (en) | 2021-12-31 |
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| CN202111204941.3A Pending CN113863293A (en) | 2021-10-15 | 2021-10-15 | Auxiliary device and method for fixing anchor pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0461470A1 (en) * | 1990-06-06 | 1991-12-18 | Rino Biz | A table-container and relative support also for a beach umbrella, particularly for free time |
| CN203947474U (en) * | 2014-07-23 | 2014-11-19 | 国网河南禹州市供电公司 | A kind of resistance to compression Portable ground anchor |
| CN205063507U (en) * | 2015-09-23 | 2016-03-02 | 湖北日海通讯技术有限公司 | Anti counter weight structure who overturns of tower room communication base station |
| JP2018155080A (en) * | 2017-03-21 | 2018-10-04 | 新日鐵住金株式会社 | Pole original position reconstruction structure, and pole original position reconstruction method |
| CN207960113U (en) * | 2017-12-28 | 2018-10-12 | 泉州舒得乐鞋服贸易有限公司 | A kind of communication tower with stable base |
| CN211776318U (en) * | 2019-12-24 | 2020-10-27 | 国网河南省电力公司电力科学研究院 | Thin-wall centrifugal steel pipe concrete steel pipe tower |
| CN212714490U (en) * | 2020-05-19 | 2021-03-16 | 张海喜 | Highway bridge pile foundation anti-settlement device |
-
2021
- 2021-10-15 CN CN202111204941.3A patent/CN113863293A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0461470A1 (en) * | 1990-06-06 | 1991-12-18 | Rino Biz | A table-container and relative support also for a beach umbrella, particularly for free time |
| CN203947474U (en) * | 2014-07-23 | 2014-11-19 | 国网河南禹州市供电公司 | A kind of resistance to compression Portable ground anchor |
| CN205063507U (en) * | 2015-09-23 | 2016-03-02 | 湖北日海通讯技术有限公司 | Anti counter weight structure who overturns of tower room communication base station |
| JP2018155080A (en) * | 2017-03-21 | 2018-10-04 | 新日鐵住金株式会社 | Pole original position reconstruction structure, and pole original position reconstruction method |
| CN207960113U (en) * | 2017-12-28 | 2018-10-12 | 泉州舒得乐鞋服贸易有限公司 | A kind of communication tower with stable base |
| CN211776318U (en) * | 2019-12-24 | 2020-10-27 | 国网河南省电力公司电力科学研究院 | Thin-wall centrifugal steel pipe concrete steel pipe tower |
| CN212714490U (en) * | 2020-05-19 | 2021-03-16 | 张海喜 | Highway bridge pile foundation anti-settlement device |
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Application publication date: 20211231 |
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