CN109667293B - The anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test - Google Patents
The anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test Download PDFInfo
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- CN109667293B CN109667293B CN201910051832.9A CN201910051832A CN109667293B CN 109667293 B CN109667293 B CN 109667293B CN 201910051832 A CN201910051832 A CN 201910051832A CN 109667293 B CN109667293 B CN 109667293B
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- Prior art keywords
- pulling
- pile
- pull rod
- anchor connection
- strength
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
Abstract
The invention discloses a kind of anchor connection method anti-pulling devices of unit for single-pile vertical anti-pulling static test, its structure is different from tradition, the form for directly or indirectly detachably being anchored test pile and pull rod using other high-strength connector, a series of problems brought by existing utilization pedestal main reinforcement i.e. regular reinforcement welding form is avoided, bored concrete pile, prefabricated pile are suitable for, it is easy to connect, firm, uniform force, securely and reliably, be conducive to improve work on the spot efficiency and save the cost, also guarantee the accurate of measurement result.It further, need to be convenient and time-saving also without the limitation of sequencing when not only doing vertical compression, but also doing vertically pulling-resistant static test to same foundation stake.
Description
Technical field
The present invention relates to a kind of detection devices of building pile foundation.
Background technique
As " basis " --- the foundation pile of building, it is played an important role in engineering.To ensure construction quality and peace
Entirely, the anti-pulling test for carrying out pile foundation in time is very necessary.Examination criteria general at present is " architecture foundation pile detection technique rule
Model " JGJ106-2014 is commonly connected directly to longitudinal regular reinforcement in test pile for bored concrete pile to be tested, specially will
Each reinforcing bar is welded on hand basket or the flange periphery of connection jack output end jointly, after pile for prestressed pipe, and filling core
The regular reinforcement welding hand basket or flange of core will be filled.Such detection device, firstly because the longitudinal reinforcement of connection is for work
The regular reinforcement that journey uses, the intensity of itself, which only meets, to be used in foundation pile as reinforcing member, and in resistance to plucking static test
High-strength external force under be easily damaged, secondly as longitudinal regular reinforcement exposes test pile stake top, can usually become in the construction process
Shape bending even fractures, this allows for before detection, needing to carry out straightening to curved reinforcing bar, welding the reinforcing bar to fracture
Processing is connect, when the decorating position height of jack, also needs to weld lengthening when the reinforcing bar of exposing is inadequate, therefore there is processing complexity,
Detect the defect of time length.Furthermore can not be completely straight after curved bar straightening, after flange or hand basket stress, hold
It is also easy to produce bias, each reinforcing steel bar bear is uneven, in addition steel bar welding contact is more, generates stress and concentrates, be easy to break in weld,
Terminate test.
On the whole, its connection structure of existing detection device is there are the early-stage preparations time is long, weld rapid wear in detection
It is bad, once damage, needs to weld again and test again, the test period is long, and whole efficiency is low.And special weldering is needed in detection
It connects, in addition the cost of detection is also higher to the processing cost of abnormal conditions.In addition, crumbling for weld can also bring safe prestige
The side of body.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, it is simple to provide a kind of structure, securely and reliably, efficient save the cost
The anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test.
In order to achieve the above object, the technical scheme adopted by the invention is that:
The anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test, two buttresses including being set to test pile two sides, frame
The girder for being located on the buttress, being suspended from above the test pile, and the jack in the middle part of the girder, the jack
Power output end be connected with fixed device, the fixed device is fixedly connected with several pull rods, and the pull rod passes through high strong ties
Part is connect with the test pile, is additionally provided with displacement detecting structure, the smoothing for the girder；
The high-strength connector is equally distributed extremely including at least being embedded in the test pile and surrounding the test pile axis
Few three high tensile reinforcements, and the high tensile reinforcement end is exposed by the groove at the top of the test pile, exposed part is not
It is connect beyond the test pile surface, and with the pull rod.
Preferably, the displacement detecting structure includes that measurement arm and support arm, the two are being put down vertically driven by the motor
It is rotated on face, wherein strip through hole and a perpendicular are provided on the measurement arm, the strip through hole is along width
The central plane in direction is parallel with the machine shaft extension line to intersect, and is provided on the support arm and the strip through hole
The vertical measuring surface of length direction, the displacement detecting structure further include the fixed suspension line in one end, and the suspension thread end is set
It is equipped with laser emitter, and the laser emitter is provided with the limit plane being overlapped with the perpendicular, laser beam hangs down
Directly emit in the limit plane, when laser beam runs through the strip through hole, the measuring surface is horizontal.
Preferably, the high-strength connector further includes connection sleeve, and the connection sleeve includes penetrating through cavity, and cavity
Inner wall both ends pass through screw thread respectively and connect with the high tensile reinforcement and pull rod, wherein the middle part of the connection sleeve surrounds its axis
Line is evenly distributed with several strip through-holes.
Preferably, the high-strength connector further includes anchoring pulling plate, anchoring pulling plate and the high-strength steel described in anchor connection
The first high-strength bolt of pulling plate and the pull rod is anchored described in first high-strength bolt of muscle and anchor connection.
Preferably, the first connecting hole and the second connecting hole are set on the anchoring pulling plate to connect first high-strength bolt
With the second high-strength bolt, wherein each first connecting hole is evenly distributed on the first circumference, and each second connecting hole is equal
It is even to be distributed on the second circumference, first circumference and the setting of the second circumferential concentric.
Preferably, first connecting hole and/or second connecting hole are a word hole, and word hole is along described the
One circumference radial direction extends.
Preferably, first high-strength bolt and/or second high-strength bolt are cavity structure, the cavity structure one
End, by being threaded into fixation, surrounds it on the cavity wall of the cavity structure for the high tensile reinforcement and/or the pull rod
Axis is evenly distributed with several strip through-holes.
Preferably, the anchoring pulling plate is the integral structure for including upper plate, lower plate and intermediate plate, and the intermediate plate is used for
The upper plate and lower plate are attached, offer connection first high-strength bolt and second on the upper plate and lower plate respectively
The first connecting hole and the second connecting hole of high-strength bolt.
Preferably, the flattening method of the girder is as follows:
S1: the measurement arm and the support arm is driven to rotate by the motor；
S2: when the laser emitter detects laser beam through the strip through hole, the motor stops turning
Dynamic, the measuring surface reaches horizontal position at this time；
S3: the laser emitter is placed in the measuring surface, and the different location in the measuring surface is to institute
State girder bottom emission laser beam；
S4: the girder is adjusted according to the measurement result of different location, until each measurement result is equal, completes the girder
Smoothing.
The beneficial effects of the present invention are:
1. foundation pile resistance to plucking detection device of the invention, is different from tradition, by test pile and drawn using other high-strength connector
The form that bar directly or indirectly anchors, avoids a series of problems brought by traditional regular reinforcement welding form, easy to connect,
It is firm, securely and reliably, is conducive to improve work on the spot efficiency and save the cost, also guarantees the accurate of measurement result.
2. pre-buried several high tensile reinforcements can be very good to guarantee as high-strength connector in test pile as tension reinforcement
Bonding strength, quality of connection and stability, material easily obtain, easy to operate, save on-site detecting device and build the time.
3. the stake top 1.5 cm -2.5cm apart from test pile is arranged in the top of high tensile reinforcement, preferably 2cm can preferably guarantee
The stability of reinforcing bar in the detection, and since reinforcing bar top is lower than stake top, it is safe and reliable in addition to doing pullout tests, do resistance to compression examination
It is cut out when testing without such as traditional regular reinforcement head that will expose stake top, resistance to plucking static test and compressive static load test can be with
Doing in no particular order.
4. the anchorage length of preferred high tensile reinforcement is 10cm-15cm, it can preferably guarantee the stability of connection.Especially
The anchorage length of pull rod is also provided with the anchorage length equal to high tensile reinforcement, further increases the stability of integrated connection.
5. high tensile reinforcement can directly be connect with pull rod screw, additional connecting component is eliminated, structure is simple, safety
Reliably, efficient and save the cost.
6. high tensile reinforcement can also be connect by a connection sleeve with pull rod screw, more convenient operation, moreover, either
High tensile reinforcement is directly connected with pull rod, or by connection sleeve, all guarantee pull rod and high tensile reinforcements pass on same vertical line
Power is reliable, high tensile reinforcement uniform force, and structure is simple, dismounts all very convenient.
7. the diameter of high tensile reinforcement can be set to 32 mm -40mm, guarantee the intensity of reinforcing bar itself, the cooperation present invention
Connection type it is relatively reliable on the whole, especially pull rod can also use high-strength connection reinforcing bar, full thread, the company of further increasing
The stress intensity of binding structure entirety, also facilitates connection.
8. high-strength connector is set as at least three high tensile reinforcements, and each high tensile reinforcement is evenly arranged on same circumference, can take into account
The usage quantity of high tensile reinforcement and stress it is uniform and stable, the position of especially each pull rod is also uniformly dispersed in same circumference, and draws
The circumference where circumference and high tensile reinforcement where bar in the horizontal plane be projected as concentric circles, then the quantity of pull rod and arrangement with
The quantity of high tensile reinforcement and arrangement be not necessarily identical, also can guarantee that the high quality of stable power transmission and test is completed.
9. high-strength connector also may include anchoring pulling plate above the test pile and anchor connection anchoring pulling plate and
Several high-strength bolts of test pile anchor the upper end of pulling plate by connecting with rod anchor, and so same safety of connection setting can
The common of stake top will be exposed without such as traditional when doing other compression test due to not having reinforcing bar to expose stake top by stabilization
Reinforcing bar head is cut out, and resistance to plucking static test and compressive static load test can be done in no particular order.
10. it is identical with the quantity of high tensile reinforcement that pull rod can also be arranged, phase of the pull rod on corresponding circumference is relative to height
Strong phase of the reinforcing bar on corresponding circumference turns over 45° angle, it is also possible that the power transmission between pull rod and high-strength bolt is sufficiently stable.
11. settable connecting hole connects high-strength bolt on anchoring pulling plate, each connecting hole is also uniformly dispersed in same circumference,
And it can be yearned for respectively by center of circle direction and radially extend growth bar shaped.Therefore drawing dead-load detection is carried out to the test pile of different-diameter
When, corresponding high-strength bolt selects suitable position insertion connecting hole to be attached, so can flexibly adapt to it is a variety of not
The detection of same specification test pile operates.
12. anchoring pulling plate is the integral structure for including upper plate, lower plate and intermediate plate, the company of opening up respectively on upper plate and lower plate
The connecting hole of high-strength bolt is connect, such one side integral structure is sufficiently stable, and another aspect upper plate and lower plate are separately connected drawing
Bar and high tensile reinforcement can avoid interference from each other, more convenient connection.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in invention, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is general structure schematic diagram of the present invention；
Fig. 2 is the position view in embodiment one between high tensile reinforcement and test pile；
Fig. 3 is the connection schematic diagram of pull rod and high tensile reinforcement in embodiment one；
Fig. 4 ~ Fig. 6 be in embodiment two displacement detecting structure in the schematic diagram of different angle；
Fig. 7 is the scheme of installation that sleeve is connected in embodiment three；
Fig. 8 and Fig. 9 is high-strength bolt and the anchoring two different form of schematic diagram of pulling plate in example IV respectively；
Figure 10 is the structural schematic diagram of the integral type anchoring pulling plate in example IV including upper plate, lower plate and intermediate plate；
Figure 11 is the flattening method flow chart of two middle girder of embodiment；
Appended drawing reference: 01- buttress, 02- test pile, 03- girder, 04- jack, 05- fixed device, 06- pull rod, 07- high
Strong reinforcing bar, 08- measure arm, 09- support arm, 10- motor, 11- strip through hole, 12- suspension line, 13- laser emitter, 14-
It connects sleeve, 15- strip through-hole, 16- and anchors pulling plate, the first high-strength bolt of 17-, the second high-strength bolt of 18-, the connection of 19- first
Hole, the second connecting hole of 20-.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
Embodiment one
As shown in Fig. 1 ~ 3, a kind of anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test, including measurand
And testing equipment.Wherein, measurand is test pile 02, in the present embodiment, specially bored concrete pile；Testing equipment includes being set to test pile
Two buttresses 01 of 02 two sides are erected on buttress 01, are suspended from the girder 03 of 02 top of test pile, and set on the thousand of 03 middle part of girder
Jin top 04, the power output end of jack 04 are connected with fixed device 05, and fixed device 05 is fixedly connected with several pull rods 06, pull rod
06 is connect by high-strength connector with test pile 02, is additionally provided with displacement detecting structure, the smoothing for girder 03；The present embodiment
In, high-strength connector includes the high tensile reinforcement 07 being embedded in test pile 02, and 07 end of high tensile reinforcement is pushed up by being located at test pile 02
The groove in portion and it is exposed, exposed part is connect without departing from 02 surface of test pile, and with pull rod 06.
It is given during the work of the anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test, passes through displacement first
Detection structure smooths girder 03, to guarantee that each pull rod 06 for being fixed on fixed device 05 is kept vertically, i.e., with
Vertical test pile 02 is parallel, thus guarantee the accuracy of force direction during carrying out resistance to plucking static test to test pile 02,
Subsequent jack 04 works, and drives pull rod 06 to move by fixed device 05, passes through the connection relationship between pull rod 06 and test pile 02
It exerts a force to test pile 02, to carry out resistance to plucking static test.
In the present embodiment, high-strength connector is to be embedded in longitudinally disposed in test pile 02 and axial uniformly point around test pile 02
Several high tensile reinforcements 07 of cloth, the position of pull rod 06 and high tensile reinforcement 07 are longitudinal corresponding, and pull rod 06 also uses high-strength company
Reinforcing bar is connect, high tensile reinforcement 07 is directly threadedly coupled with pull rod 06, and specifically high tensile reinforcement 07 is high-strength screw-thread steel muscle, and screw thread is outside
Surface, the lower end of pull rod 06 is corresponding to set groove and internal screw thread to be screwed on the cooperation of the upper end of high tensile reinforcement 07.High tensile reinforcement 07
Anchorage length is 10 ~ 15cm.It is preferred that the anchorage length of pull rod 06 is also equal to the anchorage length of high tensile reinforcement 07.
Stake top 2cm of the top of each high tensile reinforcement 07 apart from test pile 02, and the groove at 02 top of test pile of anchorage part supplies
The anchored end of pull rod 06 is protruded into is with 07 anchor connection of high tensile reinforcement, specific built-in process, passes through before pre-buried general in industry
Method calculates the diameter and length of high tensile reinforcement 07 needed for detection connects.Each high tensile reinforcement 07 is symmetrically bound in concrete reinforcement
On cage, notice that 07 anchored end of high tensile reinforcement is embedded in the position away from 2cm below stake top section, anchored end length in reserve 10-15cm,
Anchored end in pile concrete casting process using plastic film protect, under pouring to anchored end along when, covered with pvc pipe in anchor
Fixed end continues to pour to stake top, the connecting rod 06 after age meets the requirements, and defeated by pull rod 06 and the power of jack 04
The fixation device 05 of outlet connects.
When detection, buttress 01, girder 03, jack 04 and displacement detecting knot are installed according to the industry general mode
Pre-buried high tensile reinforcement 07 in structure, anchor connection pull rod 06 and test pile 02, and pull rod 06 and fixed device 05 are anchored, items are just
After thread, jack 04 works, so that jack 04 exports upward power, pulls up high tensile reinforcement 07 by pull rod 06, is displaced
Displacement, working condition during detection structure detection test, judge that the resistance to plucking of test pile 02 is quiet using the general method of the industry
Carry power.
Embodiment two
The anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test in the present embodiment and the area in embodiment one
It is not: displacement detecting structure and the with this configuration flattening method of girder 03.
Specifically, displacement detecting structure includes measurement arm 08 and support arm 09, and the two is in motor 10 as shown in Fig. 4 ~ 6
It is rotated on perpendicular under drive, wherein be provided with strip through hole 11 on measurement arm 08 and a perpendicular, strip pass through
The central plane of perforation 11 in the width direction is parallel with 10 shaft extension line of motor to intersect, and is provided on support arm 09 and passes through with strip
It perforates the vertical measuring surface of 11 length directions, displacement detecting structure further includes the fixed suspension line 12 in one end, 12 end of suspension line
It is provided with laser emitter 13, and laser emitter 13 is provided with the limit plane being overlapped with perpendicular, laser beam is vertical
In limit plane transmitting, when laser beam runs through strip through hole 11, measuring surface is horizontal.
By above-mentioned displacement detecting structure, as shown in figure 11, the flattening method of girder 03 is as follows:
S1: driving measurement arm 08 and support arm 09 to rotate, need to install motor 10 before this by motor 10, with
So that its can be stable drive measurement arm 08 and support arm 09 rotate；
S2: during the two rotation, laser emitter 13 under gravity, passes through the connection of suspension line 12
It naturally droops, and emits vertical laser beam to the perpendicular of measurement arm 08 under the limitation of limit plane, when laser is sent out
When emitter 13 detects laser beam through strip through hole 11, motor 10 stops operating, and measuring surface reaches horizontal position at this time
Standard water plane is formed, certainly, needs to reduce the width of strip through hole 11 as far as possible, to guarantee the accuracy of measurement, this
In step, preferably its width is less than 2mm, and laser emitter carries out laser by included Laser emission end and laser pick-off end
Transmitting and reception, wherein laser emitter 13 and motor 10 can be controlled by controller；
S3: laser emitter 13 is placed in measuring surface by flexure suspensions line 12, and the different location in measuring surface to
03 bottom emission laser beam of girder；
S4: adjusting girder 03 according to the measurement result of different location, until each measurement result is equal, completes the school of girder 03
Flat, after girder 03 is smoothed, laser emitter 13 will be used to measure displacement.
In this preferred embodiment, multiple measured values can be obtained by a laser emitter 13, can overcome because of 03 bottom of girder
Portion's out-of-flatness and caused by error, so that the horizontality of more objective and accurate evaluation girder 03, laser emitter 13 can be
Different location and obtain different effects, effectively reduce cost.
Embodiment three
The anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test in the present embodiment and the area in embodiment one
Be not: as shown in fig. 7, high-strength connector further includes connection sleeve 14, connection sleeve 14 includes perforation cavity, and cavity is interior
Wall both ends pass through screw thread respectively and connect with high tensile reinforcement 07 and pull rod 06, wherein the middle part of connection sleeve 14 is equal around its axis
It is even that several strip through-holes 15 are distributed with.
The purpose of setting connection sleeve 14 is to reduce the connection difficulty of high tensile reinforcement 07 and pull rod 06 in the present embodiment,
Oppositely oriented screw thread, and corresponding rotation connection 14 company of can be realized of sleeve need to be only set on high tensile reinforcement 07 and pull rod 06
It connects, wherein as the innovative point of this preferred embodiment, make its relative flexibility by way of removing material at 14 middle part of connection sleeve
Enhanced, form tendon shape structure between each strip through-hole 15, meet its tensile strength enough, but can get simultaneously biggish
Flexibility is made up by each the slight curving of tendon shape structure, is protected when the error of high tensile reinforcement 07 and the presence bias of pull rod 06
The accuracy of test is demonstrate,proved.
Specifically, pull rod 06 is also high-strength connection reinforcing bar, outer surface full thread.Connection sleeve 14 sets internal screw thread to divide
The anchored end of high tensile reinforcement 07 and pull rod 06 of not being screwed on both connects, and under connection status, connects high tensile reinforcement 07 in sleeve 14
Anchored end and the anchored end of pull rod 06 abut against.When pre-buried, equally each high tensile reinforcement 07 is symmetrically bound in concrete reinforcement
On cage, notice that 07 anchored end of high tensile reinforcement is embedded in the position away from 2cm below stake top section, anchored end length in reserve 10-15cm,
Only anchored end need to be arranged connection sleeve 14 in pile concrete casting process, then be protected with plastic film, pour to anchor
Under fixed end along when, equally covered with pvc pipe in anchored end, continue to pour to stake top.When connection, the anchored end of pull rod 06 is protruded into pre-
It is first set in the connection sleeve 14 of 07 anchored end of high tensile reinforcement, rotation connection sleeve 14 connects the two.
Example IV
The anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test in the present embodiment and the area in embodiment one
Be not: as shown in figure 8, high-strength connector further includes anchoring pulling plate 16, anchor connection anchors pulling plate 16 and high tensile reinforcement 07
Second high-strength bolt 18 of the first high-strength bolt 17 and anchor connection anchoring pulling plate 16 and pull rod 06.
Wherein, it anchors on pulling plate 16 and first connecting hole 19 and the second connecting hole 20 is set to connect 17 He of the first high-strength bolt
Second high-strength bolt 18, wherein each first connecting hole 19 is evenly distributed on the first circumference, and the second connecting hole 20 is uniformly distributed
On the second circumference, the first circumference and the setting of the second circumferential concentric.In the present embodiment, the second connecting hole 20 is a word hole, and one
Word hole extends along the first circumference radial direction, and during test, the nut of high-strength bolt is bonded load with anchoring pulling plate 16.
As the preferred of the present embodiment, as shown in figure 9, the first high-strength bolt 17 and the second high-strength bolt 18 are cavity knot
Structure, cavity structure one end for high tensile reinforcement 07 and pull rod 06 by being threaded into fixation, 17 cavity structure of the first high-strength bolt
Several strip through-holes 15 are evenly distributed with around its axis on cavity wall, are acted on identical with embodiment three.
The quantity of the first high-strength bolt 17 and the second high-strength bolt 18 is six in the present embodiment, and anchoring can on pulling plate 16
Increase intensity so that stiffening plate is arranged.When connection, first according to the diameter of pile for prestressed pipe to be detected, anchoring quantity and position, choosing
With or the anchoring pulling plate 16 that matches of customization, then scene the first high-strength bolt 17 and the second high-strength bolt 18, then use industry
Interior general mode connecting rod 06 and anchoring pulling plate 16 and anchoring pulling plate 16 and high tensile reinforcement 07.Specific the present embodiment
Middle pull rod 06 is the high-strength connection reinforcing bar of full thread.
Preferably, as shown in Figure 10, anchor pulling plate 16 to be includes upper plate, lower plate and intermediate plate to another kind as the present embodiment
Integral structure, it is high that intermediate plate offers connection first for being attached to upper plate and lower plate, on upper plate and lower plate respectively
The first connecting hole 19 and the second connecting hole 20 of strength bolt 17 and the second high-strength bolt 18；It is opened up respectively in upper plate and lower plate at this time
Connect the connecting hole of the first high-strength bolt 17 and the second high-strength bolt 18.Certain either which kind of connecting hole can use a variety of
Shape increases adaptability.
It should be noted that high-strength connector refers to that intensity reaches general resistance to plucking dead-load detection test in industry in the present invention
The connector of bearing capacity, either the first high-strength bolt 17, the second high-strength bolt 18, connection sleeve 14 or high-strength connection steel
Muscle all meets the requirement.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. the anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test, which is characterized in that including being set to test pile (02) two
Two buttresses (01) of side, the girder (03) for being erected on the buttress (01), being suspended from above the test pile (02), and it is set to institute
The jack (04) in the middle part of girder (03) is stated, the power output end of the jack (04) is connected with fixed device (05), described solid
Determine device (05) to be fixedly connected with several pull rods (06), the pull rod (06) is connected by high-strength connector and the test pile (02)
It connects, is additionally provided with displacement detecting structure, be used for the smoothing of the girder (03)；
The high-strength connector, which includes at least, to be embedded in the test pile (02) and is uniformly distributed around the test pile (02) axis
At least three high tensile reinforcements (07), and the high tensile reinforcement (07) end pass through be located at the test pile (02) at the top of groove
Exposed, exposed part is connect without departing from the test pile (02) surface, and with the pull rod (06)；
The displacement detecting structure includes that measurement arm (08) and support arm (09), the two are being put down vertically under the drive of motor (10)
It is rotated on face, wherein be provided with strip through hole (11) and a perpendicular on the measurement arm (08), the strip runs through
The central plane of hole (11) in the width direction is parallel with the motor (10) shaft extension line to intersect, and sets on the support arm (09)
It is equipped with the measuring surface vertical with strip through hole (11) length direction, the displacement detecting structure further includes that one end is fixed
Suspension line (12), suspension line (12) end is provided with laser emitter (13), and the laser emitter (13) is provided with
The limit plane being overlapped with the perpendicular, laser beam emit perpendicular to the limit plane, when laser beam runs through institute
When stating strip through hole (11), the measuring surface is horizontal.
2. the anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test according to claim 1, which is characterized in that
The high-strength connector further includes connection sleeve (14), and the connection sleeve (14) includes perforation cavity, and the inner wall two of cavity
End is connect by screw thread with the high tensile reinforcement (07) and pull rod (06) respectively, wherein is enclosed in the middle part of the connection sleeve (14)
Several strip through-holes (15) are evenly distributed with around its axis.
3. the anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test according to claim 1, which is characterized in that
The high-strength connector further includes anchoring pulling plate (16), anchoring pulling plate (16) and the high tensile reinforcement (07) described in anchor connection
The second high-strength bolt of pulling plate (16) and the pull rod (06) is anchored described in first high-strength bolt (17) and anchor connection
(18).
4. the anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test according to claim 3, which is characterized in that
First connecting hole (19) and the second connecting hole (20) are set on the anchoring pulling plate (16) to connect first high-strength bolt
(17) and the second high-strength bolt (18), wherein each first connecting hole (19) is evenly distributed on the first circumference, each described
Second connecting hole (20) is evenly distributed on the second circumference, first circumference and the setting of the second circumferential concentric.
5. the anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test according to claim 4, which is characterized in that
First connecting hole (19) and/or second connecting hole (20) are a word hole, and word hole is along first circumference
Radial direction extends.
6. the anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test according to claim 4, which is characterized in that
First high-strength bolt (17) and/or second high-strength bolt (18) are cavity structure, and described cavity structure one end is for institute
High tensile reinforcement (07) and/or the pull rod (06) are stated by being threaded into fixation, is surrounded on the cavity wall of the cavity structure
Its axis is evenly distributed with several strip through-holes (15).
7. the anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test according to claim 3, which is characterized in that
The anchoring pulling plate (16) is the integral structure for including upper plate, lower plate and intermediate plate, and the intermediate plate is used for the upper plate
It is attached with lower plate, offers connection first high-strength bolt (17) and the second high-strength spiral shell on the upper plate and lower plate respectively
The first connecting hole (19) and the second connecting hole (20) of bolt (18).
8. the anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test according to claim 1, which is characterized in that
The flattening method of the girder (03) is as follows:
S1: the measurement arm (08) and the support arm (09) is driven to rotate by the motor (10)；
S2: when the laser emitter (13) detects laser beam through strip through hole (11), the motor
(10) it stops operating, the measuring surface reaches horizontal position at this time；
S3: the laser emitter (13) is placed in the measuring surface, and the different location in the measuring surface is to institute
State girder (03) bottom emission laser beam；
S4: the girder (03) is adjusted according to the measurement result of different location, until each measurement result is equal, completes the girder
(03) smoothing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910051832.9A CN109667293B (en) | 2019-01-21 | 2019-01-21 | The anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test |
Applications Claiming Priority (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201258494Y (en) * | 2008-08-27 | 2009-06-17 | 湖南省第六工程有限公司 | Loading unit for single-pile vertical anti-pulling static load test |
| CN203346919U (en) * | 2013-04-26 | 2013-12-18 | 合肥工业大学 | Ground anchor type pile foundation static load test device |
| CN204825999U (en) * | 2015-06-25 | 2015-12-02 | 辽宁有色勘察研究院 | Vertical resistance to plucking static test device of single pile |
| CN108487340A (en) * | 2018-06-15 | 2018-09-04 | 南京市建筑安装工程质量检测中心 | The anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201258494Y (en) * | 2008-08-27 | 2009-06-17 | 湖南省第六工程有限公司 | Loading unit for single-pile vertical anti-pulling static load test |
| CN203346919U (en) * | 2013-04-26 | 2013-12-18 | 合肥工业大学 | Ground anchor type pile foundation static load test device |
| CN204825999U (en) * | 2015-06-25 | 2015-12-02 | 辽宁有色勘察研究院 | Vertical resistance to plucking static test device of single pile |
| CN108487340A (en) * | 2018-06-15 | 2018-09-04 | 南京市建筑安装工程质量检测中心 | The anchor connection method anti-pulling device of unit for single-pile vertical anti-pulling static test |
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