CN103835318A - Quick connecting piece in pile foundation static load test - Google Patents
Quick connecting piece in pile foundation static load test Download PDFInfo
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- CN103835318A CN103835318A CN201210488591.2A CN201210488591A CN103835318A CN 103835318 A CN103835318 A CN 103835318A CN 201210488591 A CN201210488591 A CN 201210488591A CN 103835318 A CN103835318 A CN 103835318A
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Abstract
The invention discloses a quick connecting piece in a foundation static load test. The quick connecting piece comprises a connecting prestressing tendon and sub-connectors. At least one end of the connecting prestressing tendon can be in axial locking connection with the sub-connectors. The ends, back on to the connecting prestressing tendon, of the sub-connectors are provided with positioning holes, the diameter of the positioning holes can be decreased, the positioning holes are provided with adjusting pieces, and the diameter of the positioning holes can be adjusted through the adjusting pieces. The quick connecting piece can be in quickly detachable connection with a pile foundation rebar through the sub-connectors connected to one end of the prestressing tendon, the connecting speed is high, the junction between the rebar and the sub-connectors is convenient to adjust, and therefore it is guaranteed that the rebar on the top of a pile is stressed evenly. Furthermore, as the quick connecting piece is convenient to connect, high-lift operation can be avoided, work difficulty and work risks are lowered, materials are saved, material waste is avoided, repeated testing can be achieved, and the success probability of testing can be enhanced.
Description
Technical field
The present invention relates to a kind of static load of pile foundation checkout equipment, particularly Quick connection part in a kind of static load of pile foundation detection.
Background technology
It is to detect of paramount importance project as foundation that static load of pile foundation provides an important means of parameter and measurement pile foundation construction quality as Pile Foundations Design all the time, in recent years, along with the fast development of China's economy, be subject to the restriction in soil and the needs of civil air defense constructions and installations, China's building has presented upwards more and more higher, downward deeper and deeper developing state, correspondingly more and more to pile foundation engineering amount, and vertically pulling-resistant bearing capacity and vertical compression requirement for bearing capacity to single pile are more and more higher, in single pile vertical resistance pressure bearing capacity, adopt in anchored pile-testing method detection and unit for single-pile vertical anti-pulling loading test, how the stake for bearing resistance to plucking is connected with the girder of test, the power that success applies uplift resistance and jack is carried out balance, the speed of pile foundation detection and the successful of test will directly be affected, two kinds of conventional detection methods are respectively anchored pile-testing method detection and uplift pile detection at present, below these two kinds of detection methods are introduced:
According to " architecture foundation pile detection technique code ", anchored pile-testing method in single pile vertical resistance pressure loading test is to provide counter-force by anchoring pile, anchoring pile is by being delivered to power on girder, provide counter-force for applying the load of test pile by girder, (typical force diagram is shown in Fig. 1), its key whether testing successfully is whether the uplift resistance of anchoring pile meets the demands and how anchoring pile effectively offers girder by counter-force.
For the anchored pile-testing method in single pile vertical resistance pressure loading test, it is relatively simple that the detection of uplift pile loads, its general principle is the counter-force that resistance to plucking is provided by two piers, pass through girder, by jack load application, jack is arranged by two kinds of modes conventionally: two ends jack loads; Middle jack loads, and (typical force diagram is shown in Fig. 2) its key whether testing successfully is whether the bearing capacity of foundation soil of buttress point meets the demands and how uplift pile effectively offers girder by counter-force.
By to two kinds of test method introductions, can find that a general character is exactly girder and how to be effectively connected and whether successfully directly to determine to detect for the stake that resistance to plucking is provided.
According in recent years anchored pile-testing method being detected and uplift pile detection finding, test in two kinds of detection methods is by stake top reinforcing bar and the welding of connecting reinforcement one end or mechanical connection with girder and the stake power transmission that uplift effect is provided, the other end of connecting reinforcement correspondingly with girder on (or jack top, this kind of situation appears at load mode in the middle of the jack of uplift pile in detecting) the blue welding of extension or adopt nut mechanical connection.
This kind of method connects the following problem that mainly exists:
1, when load application, owing to being all rigidly connected, the reinforcing bar that there will be part to connect is long, part reinforcing bar is short, and stake top reinforcing steel bar bear is inhomogeneous, thereby can cause part reinforcing bar to destroy in advance, thereby causes detecting unsuccessfully;
2,, for being welded to connect, need to consume a large amount of welding rod and artificial, especially in the detection of high tonnage, often this just needs cost multiple artificial, especially in the time carrying out that extension on girder is blue to be connected with reinforcing bar, owing to belonging to senior engineer's operation, also can cause the accident generations such as falling of employee.
3,, for mechanical connection, for welding, reduced welding, also corresponding can minimizing much manually, but must reserve silking at stake top reinforcing bar and connecting reinforcement, for mechanical connection, and these reserved silkings all will can not use in follow-up use, also cause certain waste.
4, no matter be mechanical connection or be welded to connect, all need to use connecting reinforcement, these reinforcing bars, after the complete pile of every detection, because welding section is all cut, thereby make substantially all cannot be reused while once detecting upper again, thereby lot of materials and the wasting of resources are also caused, and for mechanical connection, if reserved silking design is bad, also can cause connection not highly to be inconsistent, cause again and make, produce unnecessary waste
5, in above connection, all adopt and hung indigo plant, especially in being welded to connect, hang blue dead weight larger, often all needing when mounted to use crane just can install, increase difficulty, on the other hand, due to frequent welding, part is hung indigo plant and is just damaged after use several times, on the other hand, be to be all directly placed on girder owing to hanging indigo plant, and sectional dimension is greater than girder, if a side reinforcing bar destroys, can cause that the blue imbalance of extension is stressed, thereby cause the generation quality accident of dropping of hanging indigo plant, also cause the failure detecting.
Summary of the invention
In order to make up above deficiency, the invention provides Quick connection part in a kind of static load of pile foundation detection, during this static load of pile foundation detects, Quick connection part has been realized pile foundation reinforcing bar and has been connected with detection the quick of girder, has reduced work risk, has saved material, and the success that is conducive to static loading test is carried out.
The present invention for the technical scheme that solves its technical problem and adopt is: Quick connection part during a kind of static load of pile foundation detects, comprise and connecting by presstressed reinforcing steel and sub-connector, described connection can axial retention be connected with sub-connector with at least one end of presstressed reinforcing steel, sub-connector connects dorsad and is provided with the locating hole that a diameter can shrink with one end of presstressed reinforcing steel, be provided with an adjustment part, this adjustment part can be adjusted locating hole diameter.
As a further improvement on the present invention, it is flexible connecting with presstressed reinforcing steel, and its two ends are connected with a sub-connector axial retention respectively.
As a further improvement on the present invention, described connection by the structure that presstressed reinforcing steel and sub-connector can axial retention be connected is: described sub-connector is also provided with the locating hole that a diameter can shrink towards connecting with one end of presstressed reinforcing steel, also be provided with the adjustment part that can adjust this locating hole diameter, connection can be dismantled stop with presstressed reinforcing steel and is inserted in locating hole.
As a further improvement on the present invention, the structure that described adjustment part can be adjusted locating hole diameter is: the end of described sub-connector is provided with the first voussoir of an axial retention, locating hole is positioned at the first voussoir inner side, this the first voussoir sidewall offers at least one cracking along generatrix direction, described voussoir lateral wall is provided with screw thread, adjustment part is the wedged hole that inside wall mates with the first voussoir, in this wedged hole, is provided with internal thread, and described adjustment part is threaded with wedged hole.
As a further improvement on the present invention, in described sub-connector, be also provided with the second voussoir of an axial retention, this the second voussoir outside is arranged with a wedge-shaped sleeve matching, in sub-connector, be also installed with one and tighten up platform, the described platform that tightens up is provided with the through hole that presstressed reinforcing steel wears for connection, tighten up platform and be positioned at the second voussoir towards the side connecting with presstressed reinforcing steel, also be provided with a spanner, handle and the wrench body of described spanner are axially arranged with angle along sub-connector, and described wrench body is located in wedge-shaped sleeve and tightens up between platform.
As a further improvement on the present invention, the little one end of described first and second voussoir diameter is large one end relative diameter is towards sub-connector axial inner.
As a further improvement on the present invention, described connection by the structure that presstressed reinforcing steel and sub-connector can axial retention be connected is: sub-connector is provided with a connecting hole towards connecting with one end of presstressed reinforcing steel, described connection is inserted in this connecting hole with presstressed reinforcing steel, and connects with passing through connector backstop in the end wall inner side of this end of sub-connector in one end that presstressed reinforcing steel stretches in connecting hole.
As a further improvement on the present invention, connection is only connected with sub-connector axial retention one end with presstressed reinforcing steel, also be provided with an extension indigo plant, hang indigo plant and be provided with some perforation, described connection is inserted in this perforation one end of sub-connector dorsad with presstressed reinforcing steel, and connection is passed through connector backstop outside hanging the sidewall of blue sub-connector dorsad with the end that presstressed reinforcing steel stretches out perforation.
As a further improvement on the present invention, two rows are lined up in the blue upper perforation of described extension, and this two row is corresponding and be arranged in parallel one by one.
As a further improvement on the present invention, be also provided with flexible steel plate, described flexible steel plate surface is coated with lubrication oil, connects the surface of walking around flexible steel plate and scribble lubrication oil with presstressed reinforcing steel.
Useful technique effect of the present invention is: the present invention is connected with the quick distachable of pile foundation reinforcing bar by the sub-connector realization that connects presstressed reinforcing steel end, its connection speed is fast, the link position of reinforcing bar and sub-connector is easy to adjust, guarantees that a top reinforcing steel bar bear is even, and it is easy to connect, can avoid work high above the ground, reduce work difficulty and work risk, saved material, avoided waste of material, can duplicate detection, improve the chance of success detecting.
Brief description of the drawings
Fig. 1 is that anchored pile-testing method detects schematic diagram;
Fig. 2 is that uplift pile detects schematic diagram;
Fig. 3 is the detection principle schematic that sub-connector is all established at this connection presstressed reinforcing steel two ends;
Fig. 4 is the detection principle schematic that sub-connector is established in this connection presstressed reinforcing steel one end;
Fig. 5 is sub-connector the first syndeton schematic diagram;
Fig. 6 be in Fig. 5 A-A to cutaway view Amplified image;
Fig. 7 is sub-connector the second syndeton schematic diagram;
Fig. 8 is for hanging blue front view;
Fig. 9 is for hanging blue top view.
Detailed description of the invention
Embodiment: Quick connection part during a kind of static load of pile foundation detects, comprise and connecting by presstressed reinforcing steel 1 and sub-connector 2, described connection can axial retention be connected with sub-connector 2 with at least one end of presstressed reinforcing steel 1, sub-connector 2 connects dorsad and is provided with the locating hole 3 that a diameter can shrink with one end of presstressed reinforcing steel 1, be provided with an adjustment part 4, this adjustment part 4 can be adjusted locating hole 3 diameters, when use, connect with presstressed reinforcing steel 1 and be connected with detection girder 12 and (connect with presstressed reinforcing steel 1 in the time selecting, select than the high reinforcing bar of the 13 thick intensity of reinforcing bar in pile foundation, avoid it to destroy in advance), connection is connected with sub-connector 2 with presstressed reinforcing steel 1 end, then in the locating hole 3 reinforcing bar in pile foundation being inserted, with adjustment part 4 by locating hole 3 reduced, and then clamping reinforcing bar, this has just realized fast pile foundation reinforcing bar and has detected being connected of girder 12, in connection procedure, can determine clamped position according to the length of different reinforcing bars, guarantee that every reinforcing bar is all stressed even, and the mode that this kind is fixedly clamped, the a large amount of connection work in welding and screw fixation method are avoided, can not destroy end reinforced, pile foundation can be carried out repeated detection, it is high that guarantee is detected as power, accuracy in detection is high.
Described connection is flexible with presstressed reinforcing steel 1, its two ends are connected with sub-connector 2 axial retention respectively, a connection forms a combination by presstressed reinforcing steel 1 and two sub-connectors 2, when use, connection is hung over and detected on girder 12 with presstressed reinforcing steel 1, hanging down the reinforcing bar pile foundation connected from detection girder 12 both sides in its two ends, has avoided like this workman's work high above the ground, improved the safety of workman's work.
Described connection by the structure that presstressed reinforcing steel 1 and sub-connector 2 can axial retention be connected is: described sub-connector 2 is also provided with the locating hole 3 that a diameter can shrink towards connecting with one end of presstressed reinforcing steel 1, also be provided with the adjustment part 4 that can adjust these locating hole 3 diameters, connection can be dismantled stop with presstressed reinforcing steel 1 and is inserted in locating hole 3.
The structure that described adjustment part 4 can be adjusted locating hole 3 diameters is: the end of described sub-connector 2 is provided with the first voussoir 5 of an axial retention, locating hole 3 is positioned at the first voussoir 5 inner sides, these the first voussoir 5 sidewalls offer at least one cracking along generatrix direction, described voussoir lateral wall is provided with screw thread, the wedged hole that adjustment part 4 mates with the first voussoir 5 for inside wall, in this wedged hole, be provided with internal thread, described adjustment part 4 is threaded with wedged hole, adjustment part 4 is by rotating along the first voussoir 5 axial feeds or exiting, just realize the radial clamping to the first voussoir 5 or unclamped, because the first voussoir 5 sidewalls are provided with cracking along generatrix direction, the contraction of locating hole 3 is realized in the first voussoir 5 gap that is subject to will reducing after radial clamping power cracking, contrary adjustment part 4 exits, the first voussoir 5 sidewall clamping forces reduce, cracking on the first voussoir 5 sidewalls recovers under the effect of the first voussoir 5 self material elastic force, realize the expansion of locating hole 3, this is simple in structure, easy to operate, clamping force is large, reinforcing bar effectively can be clamped, certainly except this kind of structure, it can also be other structure, as locating hole 3 sidewalls are two halves formula structure, adjustment part 4 is eccentric wheel apparatus, eccentric wheel apparatus drives locating hole 3 two halves formula sidewall move toward one another to realize the contraction of locating hole 3, also or sub-connector 2 sidewalls are provided with the radial hole being communicated with locating hole 3, in radial hole, be provided with the spheroid that radially slide in hole, spherical part sidewall can reach in locating hole 3, but spheroid can not fall in locating hole 3 completely, adjustment part 4 axially can Elastic Sliding be sheathed on locating hole 3 sidewall outsides along sub-connector 2, adjustment part 4 inside walls are taper surface, this taper surface is tight against spheroid and is exposed to the surface of sub-connector 2 outsides, as long as make like this adjustment part 4 inner side taper surfaces hold out against spheroid, spheroid just to the interior motion of locating hole 3 by steel bar clamping, for increasing blessing power, can also the structure such as texture or sawtooth be set at spherome surface, this class formation be all those skilled in the art be easy to expect according to the art of this patent be equal to replacing structure, belong to this patent protection domain.
In described sub-connector 2, be also provided with the second voussoir 6 of an axial retention, these the second voussoir 6 outsides are arranged with a wedge-shaped sleeve matching 7, in sub-connector 2, be also installed with one and tighten up platform 8, the described platform 8 that tightens up is provided with the through hole that presstressed reinforcing steel 1 wears for connection, tighten up platform 8 and be positioned at the second voussoir 6 towards the side connecting with presstressed reinforcing steel 1, also be provided with a spanner 9, the handle of described spanner 9 and spanner 9 bodies are axially arranged with angle along sub-connector 2, described spanner 9 bodies are located in wedge-shaped sleeve 7 and tighten up between platform 8, when connection is connected with sub-connector 2 with presstressed reinforcing steel 1, first connection is inserted in the second voussoir 6 with presstressed reinforcing steel 1, then the handle on moving wrench 9, spanner 9 rotates in the situation that tightening up platform 8 as fulcrum like this, just heading on wedge-shaped sleeve 7 slides axially, and then the second voussoir 6 is tightened up connection presstressed reinforcing steel 1 is clamped, the second voussoir 6 only tightens up with presstressed reinforcing steel 1 connection, need only strain, must be not stressed yet, then be used in connection presstressed reinforcing steel 1 is clamped fixing by the first voussoir 5, can avoid like this connection presstressed reinforcing steel 1 to shake in the time of work and get loose, further ensure to connect the connective stability with sub-connector 2 with presstressed reinforcing steel 1.
The little one end of one end relative diameter that described first and second voussoir diameter is large is towards sub-connector 2 axial inner, like this, connect when with the reinforcing steel bar bear in presstressed reinforcing steel 1 and pile foundation, to sub-connector, 2 generations pull, under frictional force effect, 2 of sub-connectors can be pressed from both sides tighter and tighter to them, and can not produce loosening, guarantee connect stability.
Described connection by the structure that presstressed reinforcing steel 1 and sub-connector 2 can axial retention be connected is: sub-connector 2 is provided with a connecting hole towards connecting with one end of presstressed reinforcing steel 1, described connection is inserted in this connecting hole with presstressed reinforcing steel 1, and connect with passing through connector backstop in the end wall inner side of sub-connector 2 these ends in one end that presstressed reinforcing steel 1 stretches in connecting hole, connector can be nut, can be also Wedge gripping.
Described connection is only connected with sub-connector 2 axial retention one end with presstressed reinforcing steel 1, also be provided with an extension indigo plant 10, hang blue 10 and be provided with some perforation 11, described connection is inserted in this perforation 11 one end of sub-connector 2 dorsad with presstressed reinforcing steel 1, connect with presstressed reinforcing steel 1 stretch out perforation 11 end by connector backstop in hanging indigo plant 10 dorsad outside the sidewall of sub-connector 2, if stake top reinforcing bar is odd number row, also can adopt a sub-connector 2, now set up on the top of girder 12 and hang blue 10, utilize and hang blue 10 and connect with presstressed reinforcing steel 1 with being connected, wherein connector can be nut, also can be Wedge gripping.
On described extension blue 10, bore a hole and 11 line up two rows, this two row is corresponding and be arranged in parallel one by one.
Also be provided with flexible steel plate 11, described flexible steel plate surface is coated with lubrication oil, connect the surface of walking around flexible steel plate and scribble lubrication oil with presstressed reinforcing steel 1, can reduce like this friction of presstressed reinforcing steel and steel plate and steel plate and girder 12, especially in the corner of girder 12, adopt flexible steel plate to carry out transition.
Claims (10)
1. Quick connection part in a static load of pile foundation detection, it is characterized by: comprise and connecting by presstressed reinforcing steel (1) and sub-connector (2), described for connection at least one end of presstressed reinforcing steel (1) can axial retention be connected with sub-connector (2), sub-connector (2) connects dorsad and is provided with the locating hole (3) that a diameter can shrink with one end of presstressed reinforcing steel (1), be provided with an adjustment part (4), this adjustment part (4) can be adjusted locating hole (3) diameter.
2. Quick connection part in static load of pile foundation detection according to claim 1, is characterized by: it is flexible connecting with presstressed reinforcing steel (1), and its two ends are connected with a sub-connector (2) axial retention respectively.
3. Quick connection part in static load of pile foundation detection according to claim 1 and 2, it is characterized by: the described structure that for connection, presstressed reinforcing steel (1) and sub-connector (2) can axial retention be connected is: described sub-connector (2) is also provided with the locating hole (3) that a diameter can shrink towards connecting with one end of presstressed reinforcing steel (1), also be provided with the adjustment part (4) that can adjust this locating hole (3) diameter, connection can be dismantled stop with presstressed reinforcing steel (1) and is inserted in locating hole (3).
4. Quick connection part in detecting according to the static load of pile foundation described in claim 1 or 3, it is characterized by: the structure that described adjustment part (4) can be adjusted locating hole (3) diameter is: the end of described sub-connector (2) is provided with first voussoir (5) of an axial retention, locating hole (3) is positioned at the first voussoir (5) inner side, this the first voussoir (5) sidewall offers at least one cracking along generatrix direction, described voussoir lateral wall is provided with screw thread, adjustment part (4) is the wedged hole that inside wall mates with the first voussoir (5), in this wedged hole, be provided with internal thread, described adjustment part (4) is threaded with wedged hole.
5. Quick connection part in static load of pile foundation detection according to claim 4, it is characterized by: the second voussoir (6) that is also provided with an axial retention in described sub-connector (2), this the second voussoir (6) outside is arranged with a wedge-shaped sleeve matching (7), in sub-connector (2), be also installed with one and tighten up platform (8), the described platform (8) that tightens up is provided with the through hole that presstressed reinforcing steel (1) wears for connection, tighten up platform (8) and be positioned at the second voussoir (6) towards the side connecting with presstressed reinforcing steel (1), also be provided with a spanner (9), the handle of described spanner (9) and spanner (9) body are axially arranged with angle along sub-connector (2), described spanner (9) body is located in wedge-shaped sleeve (7) and tightens up between platform (8).
Static load of pile foundation according to claim 5 detect in Quick connection part, it is characterized by: the little one end of one end relative diameter that described first and second voussoir diameter is large is towards sub-connector (2) axial inner.
7. Quick connection part in static load of pile foundation detection according to claim 1 and 2, it is characterized by: the described structure that for connection, presstressed reinforcing steel (1) and sub-connector (2) can axial retention be connected is: sub-connector (2) is provided with a connecting hole towards connecting with one end of presstressed reinforcing steel (1), described for connection presstressed reinforcing steel (1) be inserted in this connecting hole, and connect with presstressed reinforcing steel (1) stretch into one end in connecting hole by connector backstop inside the end wall of this end of sub-connector (2).
8. Quick connection part in static load of pile foundation detection according to claim 1, it is characterized by: connect and use presstressed reinforcing steel (1) to be only connected with sub-connector (2) axial retention one end, also be provided with an extension indigo plant (10), hang blue (10) and be provided with some perforation (11), described for connection presstressed reinforcing steel (1) be inserted in this perforation (11) one end of sub-connector (2) dorsad, connect the end of stretching out perforation (11) with presstressed reinforcing steel (1) by connector backstop in extension indigo plant (10) dorsad outside the sidewall of sub-connector (2).
Static load of pile foundation according to claim 8 detect in Quick connection part, it is characterized by: two rows are lined up in described extensions blue (10) upper perforation (11) this two row correspondence being arranged in parallel one by one.
Static load of pile foundation according to claim 1 detect in Quick connection part, it is characterized by: be also provided with flexible steel plate (11), described flexible steel plate surface is coated with lubrication oil, connect the surface of walking around flexible steel plate and scribble lubrication oil with presstressed reinforcing steel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210488591.2A CN103835318B (en) | 2012-11-26 | 2012-11-26 | Quick connection part during static load of pile foundation detects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210488591.2A CN103835318B (en) | 2012-11-26 | 2012-11-26 | Quick connection part during static load of pile foundation detects |
Publications (2)
| Publication Number | Publication Date |
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| CN103835318A true CN103835318A (en) | 2014-06-04 |
| CN103835318B CN103835318B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210488591.2A Expired - Fee Related CN103835318B (en) | 2012-11-26 | 2012-11-26 | Quick connection part during static load of pile foundation detects |
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| Country | Link |
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| CN (1) | CN103835318B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690665A (en) * | 2015-02-16 | 2015-06-10 | 沈阳工业大学 | Double-layer jig for fatigue elongation test of ordinary steel bar and prestressed steel bar, as well as mounting technique for double-layer jig |
| CN110106928A (en) * | 2019-05-22 | 2019-08-09 | 北京城建勘测设计研究院有限责任公司 | A kind of adjustable trestle set on pit mouth protective fence |
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| CN2150269Y (en) * | 1993-02-11 | 1993-12-22 | 蔡顺景 | Quick-acting strong connector for concrete bar |
| CN2214986Y (en) * | 1994-09-29 | 1995-12-13 | 李媖瑛 | Structure-improved steel bar continuous connector |
| CN101525886A (en) * | 2009-01-14 | 2009-09-09 | 关喜才 | Major diameter uplift pile loading test method and device thereof |
| KR20100031167A (en) * | 2008-09-12 | 2010-03-22 | 김형남 | Apparatus for pile load test |
| CN202265942U (en) * | 2011-10-19 | 2012-06-06 | 荣盛建设工程有限公司 | Steel bar connector |
| CN202925578U (en) * | 2012-11-26 | 2013-05-08 | 昆山市建设工程质量检测中心 | Rapid connecting piece for use in pile foundation static load detection |
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2012
- 2012-11-26 CN CN201210488591.2A patent/CN103835318B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2150269Y (en) * | 1993-02-11 | 1993-12-22 | 蔡顺景 | Quick-acting strong connector for concrete bar |
| CN2214986Y (en) * | 1994-09-29 | 1995-12-13 | 李媖瑛 | Structure-improved steel bar continuous connector |
| KR20100031167A (en) * | 2008-09-12 | 2010-03-22 | 김형남 | Apparatus for pile load test |
| CN101525886A (en) * | 2009-01-14 | 2009-09-09 | 关喜才 | Major diameter uplift pile loading test method and device thereof |
| CN202265942U (en) * | 2011-10-19 | 2012-06-06 | 荣盛建设工程有限公司 | Steel bar connector |
| CN202925578U (en) * | 2012-11-26 | 2013-05-08 | 昆山市建设工程质量检测中心 | Rapid connecting piece for use in pile foundation static load detection |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690665A (en) * | 2015-02-16 | 2015-06-10 | 沈阳工业大学 | Double-layer jig for fatigue elongation test of ordinary steel bar and prestressed steel bar, as well as mounting technique for double-layer jig |
| CN104690665B (en) * | 2015-02-16 | 2017-04-19 | 沈阳工业大学 | Double-layer jig for fatigue elongation test of ordinary steel bar and prestressed steel bar, as well as mounting technique for double-layer jig |
| CN110106928A (en) * | 2019-05-22 | 2019-08-09 | 北京城建勘测设计研究院有限责任公司 | A kind of adjustable trestle set on pit mouth protective fence |
| CN110106928B (en) * | 2019-05-22 | 2023-11-24 | 北京城建勘测设计研究院有限责任公司 | Adjustable support arranged on shaft mouth guard rail |
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| Publication number | Publication date |
|---|---|
| CN103835318B (en) | 2016-03-30 |
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