CN110553822B - Vertical through anchor cable multi-cycle tension test method - Google Patents
Vertical through anchor cable multi-cycle tension test method Download PDFInfo
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- CN110553822B CN110553822B CN201910796874.5A CN201910796874A CN110553822B CN 110553822 B CN110553822 B CN 110553822B CN 201910796874 A CN201910796874 A CN 201910796874A CN 110553822 B CN110553822 B CN 110553822B
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Abstract
The invention relates to the technical field of anchor cable tensioning in constructional engineering, and provides a vertical through anchor cable multi-cycle tensioning test method, which comprises the following steps: sleeving a vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device on a first tool anchor; installing a feed-through jack on the vertical opposite-through anchor cable multi-cycle tensioning auxiliary device, and applying pre-tightening force to a plurality of steel strands through the feed-through jack; and carrying out a multi-cycle tension test on the plurality of steel strands. According to the vertical through anchor cable multi-cycle tensioning test method, the vertical through anchor cable multi-cycle tensioning auxiliary device is sleeved on the first tool anchor, the vertical through anchor cable multi-cycle tensioning auxiliary device can prevent anchor cable falling accidents caused by the fact that a tool anchor clamping piece of the vertical through anchor cable falls off in the multi-cycle tensioning acceptance test process, the clamp piece of the first tool anchor does not need to be well pressed and tightened before the through jack is taken down, and the clamp piece of the first tool anchor can be well pressed and tightened after the through jack is taken down.
Description
Technical Field
The invention relates to the technical field of anchor cable tensioning in building engineering, in particular to a vertical through anchor cable multi-cycle tensioning test method.
Background
After a plurality of steel strands are subjected to a multi-cycle tensioning test and before the center-penetrating jack is taken down, in order to avoid the danger caused by the downward sliding of the anchor cable, the clamp plates on the anchor of a tool penetrating the upper end of the anchor cable need to be well clamped and tightly hammered. At the moment, the limiting plate and the center-penetrating jack are required to be lifted by a gantry crane and a hand hoist for about 8cm, and the center-penetrating jack is troublesome to take down because the limiting plate and the center-penetrating jack are pre-tightened before tensioning and cannot be lifted by manpower and the conventional facilities.
Through research and field investigation, the lower end of the center-penetrating jack is 10cm away from the upper part of the anchor pier, and the anchor cable has elasticity, three hydraulic manual jacks are uniformly arranged on the lower part of the center-penetrating jack by utilizing the principles of a steel pipe and a lever, the three hydraulic manual jacks are lifted synchronously, and when the distance between the limiting plate and the tool anchor at the upper end of the anchor cable is 8cm, the clamping piece of the tool anchor at the upper end of the anchor cable is quickly hammered. And after the hydraulic manual jack is taken down, the clamping piece and the tool anchor on the feed-through jack are taken down. In the process, not only is the time consuming, but also high safety risk exists, and the condition of long-term application is not met.
Disclosure of Invention
The invention aims to provide a convenient and quick vertical through anchor cable multi-cycle tension test method, which aims to solve the problem that the conventional vertical through anchor cable multi-cycle tension test method needs to lift a penetrating jack for a certain distance before taking out the penetrating jack, and then well clamp a clamping piece of a tool anchor at the upper end of the through anchor cable and smash the clamping piece tightly.
The multi-cycle tension test method for the vertical opposite-penetrating anchor cable provided by the embodiment of the invention comprises the following steps: sleeving a vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device on a first tool anchor;
installing a feed-through jack on the vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device, and applying pre-tightening force to a plurality of steel strands through the feed-through jack;
and carrying out a multi-cycle tension test on the plurality of steel strands.
After the center-through jack is installed on the vertical through-cable multi-cycle tensioning auxiliary device, before pretightening force is applied to a plurality of steel strands through the center-through jack, the method further comprises the following steps:
and a second tool anchor is arranged on the through jack, and each steel strand is fixed at a corresponding position through a clamping piece.
Wherein, it specifically does to locate first instrument anchor to wear anchor rope multicycle stretch-draw assistor cover perpendicularly:
and installing the vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device by using a gantry crane and a manual hoist.
The vertical through anchor cable multi-cycle tensioning auxiliary device comprises a first cylinder, a second cylinder and a third cylinder;
a first through hole is formed in the axial direction of the first cylinder, a second through hole is formed in the axial direction of the second cylinder, and a third through hole is formed in the axial direction of the third cylinder;
the first cylinder is positioned at one side end of the second cylinder, and the third cylinder is positioned at the other side end of the second cylinder;
the first cylinder is provided with the through jack, the third cylinder is provided with an anchor support, the first tool anchor is arranged in the second through hole, and the plurality of steel strands enter a cavity of the through jack after penetrating through the first through hole.
Wherein the first cylinder, the second cylinder and the third cylinder are integrally connected.
The side face of the second cylinder is provided with a plurality of observation holes, and the observation holes are arranged along the circumferential direction of the second cylinder at intervals.
The reinforcing rib structure comprises a first cylinder, a second cylinder and a plurality of reinforcing ribs, wherein the reinforcing ribs are arranged along the circumferential direction of the second cylinder at intervals, the first ends of the reinforcing ribs are connected with the bottom surface of the first cylinder, the second ends of the reinforcing ribs are connected with the side surface of the second cylinder, and the third ends of the reinforcing ribs are connected with the top surface of the third cylinder.
Wherein the inner diameter of the first cylinder is smaller than the inner diameter of the second cylinder, which is equal to the inner diameter of the third cylinder.
Wherein the outer diameter of the first cylinder is equal to the outer diameter of the third cylinder, and the outer diameter of the second cylinder is smaller than the outer diameter of the first cylinder.
Wherein the height of the first cylinder is equal to the height of the third cylinder, and the height of the first cylinder is smaller than the height of the second cylinder.
According to the vertical through anchor cable multi-cycle tensioning test method provided by the embodiment of the invention, after a multi-cycle tensioning test is carried out on a plurality of steel strands by sleeving the vertical through anchor cable multi-cycle tensioning auxiliary device on the first tool anchor, when the through jack is taken down, three hydraulic manual jacks are not required to be uniformly arranged at the lower part of the through jack, so that the through jack is lifted for a certain distance, and the clamp plate of the first tool anchor is well clamped and tightly hammered through the distance. Through locating first instrument anchor to wearing anchor rope multicycle stretch-draw assistor cover perpendicularly, the anchor rope multicycle stretch-draw assistor of wearing perpendicularly can prevent to wearing the anchor rope perpendicularly to wearing the anchor rope and carrying out multicycle stretch-draw acceptance test in-process the anchor rope that falls the emergence of the anchor rope tenesmus accident that leads to from the instrument anchor clamping piece in area of anchor rope itself, need not well and pound tightly on the clamping piece of first instrument anchor before taking off the punching jack, can well and pound tightly on the clamping piece of first instrument anchor after taking off the punching jack.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a flow chart of a vertical through anchor cable multi-cycle tension test method of the present invention;
fig. 2 is a schematic structural diagram of the vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device.
Description of reference numerals:
1. a first cylinder; 2. a second cylinder; 3. a third cylinder; 4. reinforcing ribs; 5. a hand-held portion.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
In the existing vertical opposite-penetrating anchor cable multi-cycle tension test method: firstly, when an anchor cable is vertically passed through for lowering, under the condition of ensuring that the anchor cable does not slide downwards, the clamping piece in the tool anchor at the upper end is not fastened and pre-tightened, a limiting plate and a feed-through jack are placed on the anchor cable by using a gantry crane and a manual hoist for lowering the cable, and the distance between the limiting plate and the tool anchor at the upper end of the anchor cable is about 15 cm; secondly, anchoring and clamping the tool on the through jack and tamping the tool tightly; thirdly, taking down the clamping piece on the anchor of the tool at the upper end of the opposite-penetrating anchor cable by using the reserved distance of 15 cm; fourthly, after the clamping piece of the tool anchor at the upper end of the opposite-penetrating anchor cable is taken down, the through jack is slowly put down to the tool anchor at the upper end of the opposite-penetrating anchor cable by using the gantry crane and the hand hoist under the self-weight action of the anchor cable; fifthly, pre-tightening a single wire according to design requirements; and sixthly, connecting the instrument to perform a normal multi-cycle tension test after pre-tightening is completed.
Because the anchor cable is pre-tightened before tensioning, the pre-tightening force is about 280KN, so that the danger caused by the downward sliding of the anchor cable is avoided, and after the tensioning test is finished, the clamp on the anchor of a tool penetrating the upper end of the anchor cable needs to be well clamped and tightly hammered before the penetrating jack is taken down. At the moment, the limiting plate and the center-penetrating jack are required to be lifted by a gantry crane and a hand hoist for about 8cm, and the center-penetrating jack is troublesome to take down because the limiting plate and the center-penetrating jack are pre-tightened before tensioning and cannot be lifted by manpower and the conventional facilities.
Fig. 1 is a flow chart of a vertical through anchor cable multi-cycle tension test method of the present invention, as shown in fig. 1, including:
s1, sleeving the vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device on the first tool anchor;
the inner diameter of the vertical through anchor rope multi-cycle tensioning auxiliary device is larger than the outer diameter of the first tool anchor, the lower end of the vertical through anchor rope multi-cycle tensioning auxiliary device is positioned on the anchor support, the first tool anchor is positioned in a cavity of the vertical through anchor rope multi-cycle tensioning auxiliary device, and the anchor rope consisting of a plurality of steel strands anchored on the first tool anchor is positioned in the cavity of the vertical through anchor rope multi-cycle tensioning auxiliary device.
S2, installing a feed-through jack on the vertical opposite-through anchor cable multi-cycle tensioning auxiliary device, and applying pre-tightening force to the plurality of steel strands through the feed-through jack;
the lower end of the penetrating jack is located at the upper end of the vertical through anchor cable multi-cycle tensioning auxiliary device, a plurality of steel strands anchored on the first tool anchor enter a cavity of the penetrating jack after passing through the cavity of the vertical through anchor cable multi-cycle tensioning auxiliary device, pretightening force is applied to the plurality of steel strands through the penetrating jack, and the vertical through anchor cable multi-cycle tensioning auxiliary device serves as a counter-force support in the process.
And S3, performing a multi-cycle tension test on the plurality of steel strands.
After the pretightening force is applied to the plurality of steel strands through the feed-through jack, a multi-cycle tensioning test is carried out on the plurality of steel strands to see whether the anchor cable meets the design requirement.
In the embodiment of the invention, after the vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device is sleeved on the anchor pier, and a multi-cycle tensioning test is carried out on a plurality of steel strands, when the center-penetrating jack is taken down, three hydraulic manual jacks are not required to be uniformly arranged at the lower part of the center-penetrating jack, so that the center-penetrating jack is lifted for a certain distance, and the clamp of the first tool anchor is well clamped and tightly hammered through the distance. The vertical through anchor cable multi-cycle tensioning auxiliary device is sleeved on the first tool anchor, the vertical through anchor cable multi-cycle tensioning auxiliary device can prevent the vertical through anchor cable from falling after the anchor cable is laid, the clamp plate of the first tool anchor is not required to be well pressed and tightened before the penetrating jack is taken down, and the clamp plate of the first tool anchor is well pressed and tightened after the penetrating jack is taken down.
On the basis of the above embodiment, after installing the feed-through jack on the vertical through-cable multicycle tensioning assistor, before applying a pretightening force to the plurality of steel strands through the feed-through jack, the method further includes:
and a second tool anchor is arranged on the feed-through jack, and each steel strand is fixed at a corresponding position through a clamping piece.
In the embodiment of the invention, a second tool anchor is installed and fixed at the upper end of the through-center jack, and each steel strand is installed in a corresponding anchoring hole through a clamping piece.
On the basis of the embodiment, the anchor tool is characterized in that the anchor tool is provided with a vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device in a sleeved mode:
and a gantry crane and a hand hoist are utilized to install the vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device.
In the embodiment of the invention, the hand hoist is arranged on the gantry crane, and the vertical through anchor cable multi-cycle tensioning auxiliary device is hoisted to the preset position through the hand hoist, so that the vertical through anchor cable multi-cycle tensioning auxiliary device is sleeved on the first tool anchor.
On the basis of the above embodiment, as shown in fig. 2, the vertical through anchor cable multi-cycle tensioning auxiliary device comprises a first cylinder 1, a second cylinder 2 and a third cylinder 3;
a first through hole is formed along the axial direction of the first cylinder 1, a second through hole is formed along the axial direction of the second cylinder 2, and a third through hole is formed along the axial direction of the third cylinder 3;
the first cylinder 1 is located at one side end of the second cylinder 2, and the third cylinder 3 is located at the other side end of the second cylinder 2.
In the embodiment of the invention, the central lines of the first through hole, the second through hole and the third through hole are arranged in a superposition mode. The bottom surface of the third cylinder 3 is arranged on the anchorage device support, and the lower end of the feed-through jack is arranged on the top surface of the first cylinder 1. And, first instrument anchor is located the inside of second cylinder 2, and the cavity of entering behind the first through-hole of many steel strands penetrating the formula jack.
On the basis of the above embodiment, the first cylinder 1, the second cylinder 2, and the third cylinder 3 are integrally connected.
In the embodiment of the invention, in order to improve the structural strength of the vertical opposite-penetrating anchor cable multi-cycle tensioning aid, the bottom surface of the first cylinder 1 is integrally connected with the upper side end part of the second cylinder 2, and the top surface of the third cylinder 3 is integrally connected with the lower side end part of the second cylinder 2.
On the basis of the above embodiment, in order to facilitate observation of the internal condition of the second cylinder 2, a plurality of observation holes are provided on the side surface of the second cylinder 2, and the plurality of observation holes are arranged at intervals in the circumferential direction of the second cylinder 2.
In the embodiment of the present invention, the lookout hole located on the side surface of the second cylinder 2 is arranged close to the top surface of the third cylinder 3, that is, the lookout hole is located at the lower end of the side surface of the second cylinder 2.
The hole of watching out can be the circular port, and the diameter of circular port is 8cm, and the quantity of watching out the hole can be two, and two are watched out the axis coincidence of hole and are arranged.
On the basis of the embodiment, in order to improve the structural strength of the vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device, the vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device further comprises a plurality of reinforcing ribs 4, the plurality of reinforcing ribs 4 are arranged at intervals along the circumferential direction of the second cylinder 2, the first ends of the reinforcing ribs 4 are connected with the bottom surface of the first cylinder 1, the second ends of the reinforcing ribs 4 are connected with the side surface of the second cylinder 2, and the third ends of the reinforcing ribs 4 are connected with the top surface of the third cylinder 3.
In the embodiment of the present invention, the reinforcing rib 4 may be a steel strip, and the length, width and height of the steel strip are 30mm x 350 mm.
On the basis of the above embodiment, the inner diameter of the first cylinder 1 is smaller than the inner diameter of the second cylinder 2, and the inner diameter of the second cylinder 2 is equal to the inner diameter of the third cylinder 3.
In the embodiment of the present invention, the inner diameter of the first cylinder 1 may be 155mm, the inner diameter of the second cylinder 2 and the inner diameter of the third cylinder 3 may be 213 mm.
On the basis of the above embodiment, the outer diameter of the first cylinder 1 is equal to the outer diameter of the third cylinder 3, and the outer diameter of the second cylinder 2 is smaller than the outer diameter of the first cylinder 1.
In the embodiment of the present invention, the outer diameter of the first cylinder 1 and the outer diameter of the third cylinder 3 may be 400mm, and the outer diameter of the second cylinder 2 may be 273 mm.
On the basis of the above embodiment, the height of the first cylinder 1 is equal to the height of the third cylinder 3, and the height of the first cylinder 1 is smaller than the height of the second cylinder 2.
In the embodiment of the present invention, the height of the first cylinder 1 and the height of the third cylinder 3 may be 30mm, and the height of the second cylinder 2 may be 350 mm.
On the basis of the above embodiment, in order to facilitate moving the vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device, a handheld portion 5 is arranged on the side surface of the second cylinder 2, and the handheld portion 5 is integrally connected with the second cylinder 2.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A vertical through anchor cable multi-cycle tension test method is characterized by comprising the following steps:
sleeving a vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device on a first tool anchor;
installing a feed-through jack on the vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device, and applying pre-tightening force to a plurality of steel strands through the feed-through jack;
performing a multi-cycle tension test on the plurality of steel strands;
after the penetrating jack is taken down, the clamping piece of the first tool anchor is well arranged and is hammered tightly;
the vertical through anchor cable multi-cycle tensioning auxiliary device comprises a first cylinder, a second cylinder and a third cylinder;
a first through hole is formed in the axial direction of the first cylinder, a second through hole is formed in the axial direction of the second cylinder, and a third through hole is formed in the axial direction of the third cylinder;
the first cylinder is positioned at one side end of the second cylinder, and the third cylinder is positioned at the other side end of the second cylinder;
the first cylinder is provided with the through jack, the third cylinder is provided with an anchor support, the first tool anchor is arranged in the second through hole, and the plurality of steel strands enter a cavity of the through jack after penetrating through the first through hole.
2. The method of claim 1, wherein after the installing the through jack on the vertical through anchor line multi-cycle tensioning assistance device, before applying the pre-tensioning force to the plurality of steel strands by the through jack, the method further comprises:
and a second tool anchor is arranged on the through jack, and each steel strand is fixed at a corresponding position through a clamping piece.
3. The vertical through anchor cable multi-cycle tensioning test method according to claim 1, wherein the sleeving of the vertical through anchor cable multi-cycle tensioning auxiliary device on the first tool anchor is specifically:
and installing the vertical opposite-penetrating anchor cable multi-cycle tensioning auxiliary device by using a gantry crane and a manual hoist.
4. The vertical split anchor line multi-cycle tensile test method of claim 1, wherein the first cylinder, the second cylinder, and the third cylinder are integrally connected.
5. The vertical through anchor cable multi-cycle tension test method according to claim 1, wherein a plurality of observation holes are arranged on the side surface of the second cylinder, and the observation holes are arranged at intervals along the circumferential direction of the second cylinder.
6. The vertical through anchor cable multi-cycle tension test method as claimed in claim 1, further comprising a plurality of reinforcing ribs, wherein the plurality of reinforcing ribs are arranged at intervals along the circumferential direction of the second cylinder, first ends of the reinforcing ribs are connected with the bottom surface of the first cylinder, second ends of the reinforcing ribs are connected with the side surfaces of the second cylinder, and third ends of the reinforcing ribs are connected with the top surface of the third cylinder.
7. The vertical split anchor line multi-cycle tension test method of claim 1, wherein the inner diameter of the first cylinder is smaller than the inner diameter of the second cylinder, which is equal to the inner diameter of the third cylinder.
8. The vertical split anchor line multi-cycle tension test method of claim 7, wherein the outer diameter of the first cylinder is equal to the outer diameter of the third cylinder, and the outer diameter of the second cylinder is smaller than the outer diameter of the first cylinder.
9. The vertical split anchor line multi-cycle tensile test method of claim 8, wherein the height of the first cylinder is equal to the height of the third cylinder, and the height of the first cylinder is less than the height of the second cylinder.
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| CN201910796874.5A CN110553822B (en) | 2019-08-27 | 2019-08-27 | Vertical through anchor cable multi-cycle tension test method |
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| CN110553822B true CN110553822B (en) | 2022-01-07 |
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| CN101769075A (en) * | 2008-12-30 | 2010-07-07 | 中铁西北科学研究院有限公司深圳南方分院 | Method for detecting concrete beam anchor lower prestress and device for realizing method |
| CN102304930A (en) * | 2007-07-10 | 2012-01-04 | 中铁西北科学研究院有限公司深圳南方分院 | Method for detecting prestress construction quality of anchoring engineering |
| CN107975240A (en) * | 2017-11-30 | 2018-05-01 | 中国冶集团有限公司 | One kind moves back anchor two times tensioning device and its construction method |
| CN207619979U (en) * | 2017-06-06 | 2018-07-17 | 北京中润宝成工程技术有限公司 | Anchor cable removes auxiliary device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4181192B2 (en) * | 2006-07-31 | 2008-11-12 | 黒沢建設株式会社 | Ground anchor and ground anchor method |
| JP6013579B1 (en) * | 2015-10-30 | 2016-10-25 | サンコーテクノ株式会社 | Anchor holder |
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2019
- 2019-08-27 CN CN201910796874.5A patent/CN110553822B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343880A (en) * | 2007-07-10 | 2009-01-14 | 中铁西北科学研究院有限公司深圳南方分院 | Apparatus and method for existing anchorage engineering quality detection |
| CN102304930A (en) * | 2007-07-10 | 2012-01-04 | 中铁西北科学研究院有限公司深圳南方分院 | Method for detecting prestress construction quality of anchoring engineering |
| CN101769075A (en) * | 2008-12-30 | 2010-07-07 | 中铁西北科学研究院有限公司深圳南方分院 | Method for detecting concrete beam anchor lower prestress and device for realizing method |
| CN207619979U (en) * | 2017-06-06 | 2018-07-17 | 北京中润宝成工程技术有限公司 | Anchor cable removes auxiliary device |
| CN107975240A (en) * | 2017-11-30 | 2018-05-01 | 中国冶集团有限公司 | One kind moves back anchor two times tensioning device and its construction method |
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