CN112359885A - Steel bar quick locking method for single-pile pulling-resistant static load test - Google Patents
Steel bar quick locking method for single-pile pulling-resistant static load test Download PDFInfo
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- CN112359885A CN112359885A CN202011270995.5A CN202011270995A CN112359885A CN 112359885 A CN112359885 A CN 112359885A CN 202011270995 A CN202011270995 A CN 202011270995A CN 112359885 A CN112359885 A CN 112359885A
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- E—FIXED CONSTRUCTIONS
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- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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Abstract
The invention relates to a method for quickly locking reinforcing steel bars in a single-pile uplift static load test in the technical field of pile foundation detection of constructional engineering. According to the method for quickly locking the reinforcing steel bars in the single-pile pulling-resistant static load test, the reinforcing steel bar locking devices are arranged in a layered stacking mode, the problem that all clamping components are inconvenient to arrange on the same layer due to limited space around the reinforcing steel bars can be solved, meanwhile, the force application component applies upward pulling force to the whole reinforcing steel bar locking devices stacked in the layered stacking mode, the implementation processes of step-by-step pre-tightening, synchronous locking and clamping and force application of the reinforcing steel bars are achieved, the clamping efficiency is obviously improved, and the clamping process is simplified.
Description
Technical Field
The invention relates to the technical field of pile foundation detection of constructional engineering, in particular to a method for quickly locking and fixing a reinforcing steel bar in a single-pile uplift static load test.
Background
The single-pile vertical uplift static load test device is an important item for detecting reinforced concrete piles in constructional engineering, and determines the uplift limit bearing capacity of a single pile through detection to judge whether the vertical uplift bearing capacity meets the design specification.
In the experiment for loading the vertical uplift force of the single pile in the prior art, in order to apply the uplift force upwards, reinforcing steel bars extending out of the upper part of the single pile need to be respectively welded, fixed or clamped and fixed, and then the uplift force is applied through a jack force application mechanism. To using welded fastening's mode, equally divide respectively to carry out welded fastening with reinforcing bar and loading device during every turn detection, cut off the welding seam after the detection, the operation process is loaded down with trivial details, and the field construction drags to move welding equipment extremely inconvenient. And the supporting anchor clamps of clamping mode also need all dispose anchor clamps respectively for every reinforcing bar and carry out the clamping, just can realize whole even application of force to the single pile, but the space between the reinforcing bar is limited, and the installation space of anchor clamps is limited, causes the inconvenience that the anchor clamps were arranged.
Disclosure of Invention
Aiming at the problems of a clamping mode for a reinforcing steel bar in single-pile static load resistance detection in the prior art, the invention provides a reinforcing steel bar quick locking method for a single-pile static load resistance test, which realizes quick clamping of the reinforcing steel bar, is simple and quick in clamping mode, improves the construction efficiency and reasonably utilizes the clamping space.
The invention aims to realize the method for quickly locking the reinforcing steel bars in the single-pile pulling-resistant static load test.
According to the method for quickly locking the reinforcing steel bars in the single-pile pulling-resistant static load test, the reinforcing steel bar locking devices are arranged in a layered stacking mode, the problem that all clamping components are inconvenient to arrange on the same layer due to limited space around the reinforcing steel bars can be solved, meanwhile, the force application component applies upward pulling force to the whole reinforcing steel bar locking devices stacked in the layered stacking mode, the implementation processes of step-by-step pre-tightening, synchronous locking and clamping and force application of the reinforcing steel bars are achieved, the clamping efficiency is obviously improved, and the clamping process is simplified.
In order to conveniently clamp and fix each steel bar in a layered mode, the steel bar locking device comprises a plurality of slender drawing blocks arranged on the upper side of a single pile, 1-3 long holes are formed in the drawing blocks and used for penetrating through the steel bar extending out of the single pile, axially symmetrically opening and closing wedge-shaped locking blocks are arranged at the upper opening part of the steel bar extending out of the long holes, and the periphery of each wedge-shaped locking block is abutted to the inclined plane of the contact inner wall of each long hole; the utility model discloses a drawing piece, including drawing piece, pulling piece, force application component, brace pier, upside in the middle of the crossbeam, the pulling piece upwards piles up more than the one deck from the top of single pile in layers, and the piece both ends are connected respectively to drawing of bottom the force application component piles up each layer and draws the synchronous application of force of piece, the force application component includes the crossbeam, the crossbeam both ends have supported the buttress respectively, the upside in the middle of the crossbeam is equipped with the jack, the ejecting end of jack is equipped with the tie-beam, and the tie-beam hangs and adorns directly over the single pile and be connected with.
In order to implement the layered locking of the single pile, the specific locking method of the invention comprises the following steps:
firstly, vertically arranging a single pile in the axial direction below a cross beam on the lower side of a jack, arranging a plurality of drawing blocks on a first layer in parallel according to the positions of reinforcing steel bars extending out of the upper side of the single pile in the axial direction, enabling the reinforcing steel bars to penetrate through long holes in corresponding positions on different drawing blocks as much as possible, adjusting the distance between the drawing blocks to avoid the reinforcing steel bars which cannot penetrate through the long holes on the current layer, and enabling the reinforcing steel bars which cannot penetrate through the long holes on the current layer to penetrate through the drawing blocks on the current layer from the outer sides of the drawing blocks at the interval or two sides of the adjacent drawing blocks; secondly, respectively matching, inserting and abutting each steel bar penetrating through the long holes of the corresponding drawing blocks of the first layer against a pair of wedge-shaped locking blocks to pre-tighten and lock the steel bars; thirdly, stacking a second layer of drawing blocks on the upper side of the first layer of drawing blocks, enabling part or all of the steel bars which are not locked in the first layer to pass through the long holes of the drawing blocks corresponding to the second layer, enabling the length direction of each drawing block in the second layer to be staggered with the length direction of the drawing blocks in the first layer, enabling each drawing block to at least stride over two different drawing blocks in the first layer, enabling each drawing block in the second layer to stably stride over the upper side of the drawing block in the first layer, and then respectively matching, inserting and abutting each steel bar which passes through the corresponding long hole in the second layer against a pair of wedge-shaped locking blocks for pre-tightening and locking; fourthly, pre-tightening and fixing the pulling blocks and the wedge-shaped locking blocks of the first layer and the second layer, and if all the steel bars are pre-tightened and locked respectively, performing the fifth step; if the reinforcing steel bars which are not pre-tightened and locked still exist, the third layer of drawing blocks and layers above the third layer of drawing blocks and the corresponding wedge-shaped locking blocks are overlapped on the upper side of the second layer of drawing blocks in a staggered mode until all the reinforcing steel bars are pre-tightened and locked; and sixthly, connecting tension frames on two sides of each drawing block at the bottommost layer in a matching manner, so that the tension frames synchronously apply drawing force to each layer of superposed drawing blocks from two sides of each drawing block at the bottommost layer, and each pair of wedge-shaped locking blocks is extruded while each drawing block is forced to be drawn upwards, thereby realizing locking and upwards drawing of each reinforcing steel bar.
In order to avoid production interference between the drawing blocks stacked on each layer and the reinforcing steel bars, the lengths of the drawing blocks on each layer of the upper side except the drawing block on the bottom layer are different or the same according to the position of the locked reinforcing steel bars and interference prevention requirements, and the drawing blocks on each layer of the upper side are at least overlapped on two different drawing blocks on the lower side in a crossing mode, so that stable contact of the drawing blocks stacked on the upper layer and the lower layer can be ensured, and force is uniformly applied upwards from the bottom layer.
For further being convenient for from the bottom application of force upwards, the piece length of drawing that is located the bottom is greater than the maximum diameter of single pile, and the single pile both sides are all stretched out to the two ends that stretch out of all the drawing pieces of bottom, and the end that stretches out of homonymy wholly has cup jointed the pulling force frame respectively, the pulling force frame is equipped with two sets ofly to the symmetry sets up in the both sides of the piece of drawing of bottom, and the upper portion and the tie-beam of pulling force frame cup joint.
As a preferable mode of the locking structure, the width of the long hole is larger than the diameter of the steel bar, the two wedge-shaped locking blocks are symmetrically arranged along the periphery of the steel bar, the contact parts of the two wedge-shaped locking blocks and the steel bar are respectively provided with a semicircular hole for tightly holding the steel bar in a matching manner, the outer side surface of the wedge-shaped locking block, which is in contact with the long hole, is an inclined surface in matched insertion connection, and the inclined surface, which is in contact with the wedge-shaped locking blocks, of the upper opening of the long hole is provided with a tightly attached abutting. When the wedge-shaped locking blocks of all the blocks for locking the reinforcing steel bars are matched and inserted into the long holes through which the corresponding reinforcing steel bars pass to initially pre-tighten the reinforcing steel bars, the wedge-shaped locking blocks can clamp and lock the reinforcing steel bars as long as the pulling blocks are pulled upwards under the stress, and upward pulling force is applied to the reinforcing steel bars along with the pulling blocks.
In order to further ensure the pre-tightening degree of the wedge-shaped locking block, a wrapping belt is arranged on the periphery of the upper part of the wedge-shaped locking block and is tightened and locked through a lock catch.
In order to reduce the stacking interference of the upper layers of the pulling blocks, the lower layers of the steel bars which are pre-fastened and locked are arranged, and the extending parts of the steel bars extending out of the upper sides of the wedge-shaped locking blocks can be cut off before the upper layers of the pulling blocks are stacked.
Drawings
Fig. 1 is an implementation schematic diagram of a steel bar quick locking method for a single-pile pulling-resistant static load test of the invention.
Fig. 2 is a cross-sectional view along a-a of fig. 1.
FIG. 3 is a schematic view of the wedge-shaped locking block being locked to the reinforcing bar.
Fig. 4 is a schematic view of a wedge-shaped locking block with a locking fastener for locking with a steel bar.
Wherein, 1 single pile; 2, reinforcing steel bars; 3, a cross beam; 4, supporting a pier; 5, a tension frame; 6, a jack; 7 connecting the beams; 8, drawing the block; an 8A long hole; 8B inclined plane; 9, a wedge-shaped locking block; 9A inclined plane; 10 wrapping the belt; 11 locking and buckling.
Detailed Description
This embodiment will explain the method for rapidly locking the steel bar in the single-pile pulling-resistant static load test according to the present invention in detail with reference to the implementation diagrams of fig. 1 to 4.
As shown in fig. 1 and fig. 2, two-layer stacking is taken as an example to illustrate, so as to detect the anti-pulling static load of a single pile, the reinforcing steel bars 2 extending out of the axial upper side of the single pile 1 are clamped and pre-tensioned in a layered manner mainly by the reinforcing steel bar locking devices stacked in a layered and staggered manner, and then upward pulling force is applied to the reinforcing steel bar locking devices stacked in a layered manner by the upward force application component to lock the reinforcing steel bars.
In order to conveniently clamp each steel bar in a layered manner, the steel bar locking device of the embodiment includes a plurality of elongated drawing blocks 8 arranged on the upper side of a single pile, each drawing block 8 is provided with 1-3 long holes 8A, the lengths of the drawing blocks may be different according to the use length and the stacking position of the drawing blocks, each drawing block long hole 8A is used for respectively penetrating through the steel bar 2 extending out of the single pile 1, the upper opening part of the steel bar 2 extending out of the corresponding long hole 8A is provided with wedge-shaped locking blocks 9 which are axially symmetrically opened and closed, and the periphery of each wedge-shaped locking block 9 is abutted against the inclined plane of the contact inner wall of the long hole 8A; drawing block 8 upwards piles up two-layerly from the top of single pile in this embodiment, the quantity and the distribution density of reinforcing bar 2 in the single pile 1 of certainly treating according to every detection, drawing block 8 can pile up the multilayer more than two-layer, the 8 both ends of each drawing block of bottom are connected force application part and are piled up drawing block synchronous application of force to each layer, force application part wherein includes crossbeam 3, 3 both ends of crossbeam support buttress 4 respectively, should stabilize with ground and support in order to ensure crossbeam 3 steady, the upside in the middle of crossbeam 3 is equipped with jack 6 of upwards jacking application of force, jack 6's ejecting end is equipped with tie-beam 7, tie-beam 7 hangs and is connected directly over single pile 1 and through 8 both ends cooperation suits of drawing block of pulling force frame 5 and bottom, in order to realize drawing the whole synchronous application of force of block from the bottom to piling up. For the reinforcing bar passes and the lock solid, slot hole 8A's width is greater than reinforcing bar 2's diameter, wedge latch segment 9 sets up two along reinforcing bar 2's periphery axisymmetric, the position of two wedge latch segments 9 and reinforcing bar 2 contacts cooperates respectively to be equipped with the semicircle orifice that is used for holding reinforcing bar 2 tightly, the inclined plane 9A of wedge latch segment 9 and the lateral surface of slot hole 8A contact for the cooperation is pegged graft, slot hole 8A's last mouthful is equipped with the cooperation with the inclined plane department of wedge latch segment 9 contact and closely laminates and supports and lean on inclined plane 8B. When the wedge-shaped locking blocks 9 of the blocks for locking the reinforcing steel bars are matched and inserted into the long holes 8A through which the corresponding reinforcing steel bars pass to initially pre-tighten the reinforcing steel bars, the wedge-shaped locking blocks 9 can clamp and lock the reinforcing steel bars 2 as long as the pulling blocks 8 are pulled upwards under stress, and upward pulling force is applied to the reinforcing steel bars along with the pulling blocks 8. In order to further ensure the preliminary pre-tightening of the wedge-shaped locking block 9 on the reinforcing steel bar, a wrapping belt 10 is arranged on the periphery of the upper part of the wedge-shaped locking block 9, and the wrapping belt 10 is tightened and locked through a lock catch 11.
In order to avoid production interference between the drawing blocks 8 stacked on each layer and the reinforcing steel bars 2, the lengths of the drawing blocks 8 on each layer of the upper side except the drawing block 8 on the bottom layer are different or the same according to the position of the reinforcing steel bars 8 locked and interference prevention requirements, and the drawing blocks on each layer of the upper side are at least overlapped on two different drawing blocks 8 on the lower side in a crossing manner, so that the stable contact of the drawing blocks 8 stacked on the upper layer and the lower layer can be ensured, and the force can be uniformly applied upwards from the bottom layer.
For further being convenient for from the bottom application of force upwards, the drawing piece 8 length that is located the bottom is greater than the maximum diameter of single pile 1, and the radial both sides of single pile 1 periphery are all stretched out to the both ends that stretch out of all drawing pieces 8 in bottom, and the end that stretches out of homonymy wholly has cup jointed pulling force frame 5 respectively, and pulling force frame 5 is equipped with two sets ofly to the symmetry sets up in the both sides of drawing piece 8 of bottom, and the upper portion and the tie-beam of pulling force frame 5 cup joint.
The method for quickly locking the reinforcing steel bars in the single-pile pulling-resistant static load test is specifically completed through the following steps:
firstly, vertically arranging a single pile 1 axially below a cross beam on the lower side of a jack 6, arranging a plurality of drawing blocks 8 of a first layer in parallel according to the positions of reinforcing steel bars 2 extending out of the upper side of the single pile 1 axially, enabling the reinforcing steel bars 2 as many as possible to respectively pass through long holes 8A in corresponding positions on different drawing blocks 8 corresponding to the layer, and simultaneously adjusting the distance between the drawing blocks to avoid the reinforcing steel bars 8 which cannot pass through long holes of the drawing blocks of the current layer, so that the reinforcing steel bars 2 which cannot pass through the long holes of the drawing blocks of the current layer pass through the drawing blocks 8 of the current layer from the outer sides of the drawing blocks 8 at the interval or at two sides of the adjacent drawing blocks 8 of the current layer; secondly, respectively matching, inserting and abutting each steel bar 2 penetrating through the long hole 8A of the corresponding drawing block of the first layer against a pair of wedge-shaped locking blocks 9 to pre-tighten and lock the steel bar, and fastening the wrapping belt and the lock catch 11 to enable the periphery of the locked steel bar after the wedge-shaped locking blocks 9 are pre-tightened to abut against the long hole 8A of the drawing block; thirdly, a second layer of drawing blocks are stacked on the upper side of the first layer of drawing blocks 8, before the layer of drawing blocks 8 is stacked, the extra length part of the first layer of locked steel bar extending out can be cut off to reduce the interference to the second layer of drawing blocks, all the steel bars 2 which are not locked in the first layer can pass through the long holes 8A of the drawing blocks corresponding to the second layer through the drawing blocks stacked in the layer, and the length direction of each drawing block 8 of the second layer is staggered with the length direction of the drawing block 8 of the first layer, and each drawing block of the second layer is ensured to at least cross over two different drawing blocks 8 of the first layer, each pulling block 8 of the second layer is stably arranged on the upper side of the pulling block of the first layer in a spanning mode, each reinforcing steel bar 2 penetrating through the corresponding long hole 8A of the second layer is matched, inserted and abutted against a pair of wedge-shaped locking blocks 9 to be pre-tightened and locked, and the wrapping tape and the lock catch 11 are fastened; fourthly, all the steel bars are pre-tightened and locked through the pre-tightening fixation of the drawing blocks 8 and the wedge-shaped locking blocks 9 of the first layer and the second layer, and then the fifth step is carried out; because all the steel bars are pre-tightened and locked through the first layer and the second layer, if the steel bars which are not pre-tightened and locked still remain after the two layers of pre-tightening and locking are performed on other single piles with larger structure sizes, the third layer of drawing blocks 8 and the layers above the third layer of drawing blocks 8 and the corresponding wedge-shaped locking blocks 9 are overlapped on the upper side of the second layer of drawing blocks 8 in a staggered mode until all the steel bars 2 of the single pile to be detected are pre-tightened and locked; sixthly, the two sides of each drawing block 8 at the bottommost layer are matched and connected with the tension frame 5, so that the tension frame 5 synchronously applies drawing force to each layer of the superposed drawing blocks 8 from the two sides of each drawing block 8 at the bottommost layer, each pair of wedge-shaped locking blocks 9 are extruded when each drawing block 8 is forced to be drawn upwards, and locking and upwards drawing of each reinforcing steel bar 8 are realized.
According to the method for quickly locking the reinforcing steel bars in the single-pile pulling-resistant static load test, the reinforcing steel bar locking devices are arranged in a layered stacking mode, the problem that all clamping components are inconvenient to arrange on the same layer due to limited space around the reinforcing steel bars can be solved, meanwhile, the force application component applies upward pulling force to the whole reinforcing steel bar locking devices stacked in the layered stacking mode, the implementation processes of step-by-step pre-tightening, synchronous locking and clamping and force application of the reinforcing steel bars are achieved, the clamping efficiency is obviously improved, and the clamping process is simplified. Meanwhile, in the locking method, the wedge-shaped locking block 9 and the long hole 8A of the drawing block are matched with each other to form an inserting structure, so that the force application for locking the reinforcing steel bars is facilitated, the step of locking the reinforcing steel bars one by one is simplified, and the reliable locking can be realized directly through inserting and extruding matching.
Claims (8)
1. A method for quickly locking reinforcing steel bars in a single-pile pulling-resistant static load test is characterized in that reinforcing steel bar locking devices which are stacked in a layered and staggered mode are used for clamping and pre-tightening the reinforcing steel bars extending out of the axial upper side of a single pile in a layered mode, and upward pulling force is applied to the reinforcing steel bar locking devices which are stacked in the layered mode through upward force application components to lock the reinforcing steel bars.
2. The method for quickly locking the reinforcing steel bars in the single-pile pulling-resistant static load test according to claim 1, wherein the reinforcing steel bar locking device comprises a plurality of elongated pulling blocks arranged on the upper side of the single pile, 1-3 long holes are formed in each pulling block, each long hole is used for penetrating through the reinforcing steel bar extending out of the single pile, wedge-shaped locking blocks which are axially symmetrically opened and closed are arranged at the upper opening part of each reinforcing steel bar extending out of the corresponding long hole, and the peripheries of the wedge-shaped locking blocks abut against the inclined surfaces of the contact inner walls of the long holes; the utility model discloses a drawing piece, including drawing piece, pulling piece, force application component, brace pier, upside in the middle of the crossbeam, the pulling piece upwards piles up more than the one deck from the top of single pile in layers, and the piece both ends are connected respectively to drawing of bottom the force application component piles up each layer and draws the synchronous application of force of piece, the force application component includes the crossbeam, the crossbeam both ends have supported the buttress respectively, the upside in the middle of the crossbeam is equipped with the jack, the ejecting end of jack is equipped with the tie-beam, and the tie-beam hangs and adorns directly over the single pile and be connected with.
3. The method for rapidly locking the reinforcing steel bars in the single-pile pulling-resistant static load test according to claim 2, is characterized by comprising the following steps:
firstly, vertically arranging a single pile in the axial direction below a cross beam on the lower side of a jack, arranging a plurality of drawing blocks on a first layer in parallel according to the positions of reinforcing steel bars extending out of the upper side of the single pile in the axial direction, enabling the reinforcing steel bars to penetrate through long holes in corresponding positions on different drawing blocks as much as possible, adjusting the distance between the drawing blocks to avoid the reinforcing steel bars which cannot penetrate through the long holes on the current layer, and enabling the reinforcing steel bars which cannot penetrate through the long holes on the current layer to penetrate through the drawing blocks on the current layer from the outer sides of the drawing blocks at the interval or two sides of the adjacent drawing blocks; secondly, respectively matching, inserting and abutting each steel bar penetrating through the long holes of the corresponding drawing blocks of the first layer against a pair of wedge-shaped locking blocks to pre-tighten and lock the steel bars; thirdly, stacking a second layer of drawing blocks on the upper side of the first layer of drawing blocks, enabling part or all of the steel bars which are not locked in the first layer to pass through the long holes of the drawing blocks corresponding to the second layer, enabling the length direction of each drawing block in the second layer to be staggered with the length direction of the drawing blocks in the first layer, enabling each drawing block to at least stride over two different drawing blocks in the first layer, enabling each drawing block in the second layer to stably stride over the upper side of the drawing block in the first layer, and then respectively matching, inserting and abutting each steel bar which passes through the corresponding long hole in the second layer against a pair of wedge-shaped locking blocks for pre-tightening and locking; fourthly, pre-tightening and fixing the pulling blocks and the wedge-shaped locking blocks of the first layer and the second layer, and if all the steel bars are pre-tightened and locked respectively, performing the fifth step; if the reinforcing steel bars which are not pre-tightened and locked still exist, the third layer of drawing blocks and layers above the third layer of drawing blocks and the corresponding wedge-shaped locking blocks are overlapped on the upper side of the second layer of drawing blocks in a staggered mode until all the reinforcing steel bars are pre-tightened and locked; and sixthly, connecting tension frames on two sides of each drawing block at the bottommost layer in a matching manner, so that the tension frames synchronously apply drawing force to each layer of superposed drawing blocks from two sides of each drawing block at the bottommost layer, and each pair of wedge-shaped locking blocks is extruded while each drawing block is forced to be drawn upwards, thereby realizing locking and upwards drawing of each reinforcing steel bar.
4. The method for rapidly locking the steel bars in the single-pile pulling-resistance static load test according to claim 3, wherein the lengths of the pulling blocks of each layer at the upper side except the pulling block at the bottom layer are different or the same according to the position of the locked steel bars and the interference prevention requirement, and the pulling blocks of each layer at the upper side are overlapped at least on two different pulling blocks at the lower side.
5. The method for quickly locking the reinforcing steel bars in the single-pile pulling-resistance static load test according to claim 3, wherein the length of the pulling block at the bottommost layer is greater than the maximum diameter of the single pile, two extending ends of all the pulling blocks at the bottom layer extend out of two sides of the single pile, the extending ends at the same side are integrally sleeved with two groups of pulling frames respectively, the two groups of pulling frames are symmetrically arranged on two sides of the pulling block at the bottom layer, and the upper part of each pulling frame is sleeved with the connecting beam.
6. The method for quickly locking the reinforcing steel bar in the single-pile pulling-resistant static load test according to claim 3, wherein the width of the long hole is larger than the diameter of the reinforcing steel bar, the two wedge-shaped locking blocks are symmetrically arranged along the peripheral axis of the reinforcing steel bar, the contact parts of the two wedge-shaped locking blocks and the reinforcing steel bar are respectively provided with a semicircular hole for tightly holding the reinforcing steel bar in a matching manner, the outer side surface of each wedge-shaped locking block, which is in contact with the corresponding long hole, is an inclined surface in matched insertion connection, and the upper opening of the corresponding long hole, which is in contact with the corresponding wedge-shaped locking block.
7. The method for rapidly locking the reinforcing steel bar in the single-pile pulling-resistant static load test according to claim 3, wherein a wrapping belt is arranged on the periphery of the upper part of the wedge-shaped locking block and is tightened and locked through a lock catch.
8. The method for rapidly locking the reinforcing steel bars in the single-pile pulling-resistant static load test according to claim 3, wherein the lower layer of the reinforcing steel bars which are pre-locked is cut off the portion of the reinforcing steel bars which extends out of the upper side of the wedge-shaped locking block before the layers of the pulling blocks on the upper side are stacked.
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| CN205502396U (en) * | 2016-03-31 | 2016-08-24 | 戴云发 | A reinforcing bar is tied up to concrete and is constructed for building |
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| WO2017107960A1 (en) * | 2015-12-22 | 2017-06-29 | 广东中科华大工程技术检测有限公司 | Connection device for use in vertical uplift resistance load of pre-buried foundation pile |
| CN108018890A (en) * | 2018-01-23 | 2018-05-11 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | A kind of anchor pole pullout tests system |
| CN211341434U (en) * | 2019-11-19 | 2020-08-25 | 厦门丰力机械有限公司 | Card |
| CN213204233U (en) * | 2020-08-06 | 2021-05-14 | 北京金地通检测技术有限公司 | Anchor pile counter-force beam device |
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2020
- 2020-11-13 CN CN202011270995.5A patent/CN112359885B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017107960A1 (en) * | 2015-12-22 | 2017-06-29 | 广东中科华大工程技术检测有限公司 | Connection device for use in vertical uplift resistance load of pre-buried foundation pile |
| CN205502396U (en) * | 2016-03-31 | 2016-08-24 | 戴云发 | A reinforcing bar is tied up to concrete and is constructed for building |
| CN206205010U (en) * | 2016-09-26 | 2017-05-31 | 常州市建筑科学研究院集团股份有限公司 | Anti-pulling capacity testing equipment |
| CN108018890A (en) * | 2018-01-23 | 2018-05-11 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | A kind of anchor pole pullout tests system |
| CN211341434U (en) * | 2019-11-19 | 2020-08-25 | 厦门丰力机械有限公司 | Card |
| CN213204233U (en) * | 2020-08-06 | 2021-05-14 | 北京金地通检测技术有限公司 | Anchor pile counter-force beam device |
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| CN112359885B (en) | 2022-03-01 |
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