CN208633165U - Static test counterforce structure and static-load testing device - Google Patents
Static test counterforce structure and static-load testing device Download PDFInfo
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- CN208633165U CN208633165U CN201820966548.5U CN201820966548U CN208633165U CN 208633165 U CN208633165 U CN 208633165U CN 201820966548 U CN201820966548 U CN 201820966548U CN 208633165 U CN208633165 U CN 208633165U
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- 238000012360 testing method Methods 0.000 title claims abstract description 84
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- 238000004873 anchoring Methods 0.000 claims abstract description 11
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- 238000004062 sedimentation Methods 0.000 description 4
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Abstract
The utility model relates to building fields, it is intended to solve the problems, such as that experimental rig in the prior art there are measurement result deviation is big, provides static test counterforce structure and static-load testing device when carrying out the test for the foundation pile to large-tonnage.Static test counterforce structure comprising girder, column, slant-pull structure.Vertically vertically branch is set on the span centre position of girder upper surface for column, and the part that girder is located at column two sides passes through slant-pull structure tensioning in the upper end of column respectively, and the slant-pull structure of two sides is symmetrical about column.The length of girder is nearby respectively arranged with the resistance to plucking structure for being anchored in basis to both ends, and the setting of resistance to plucking structure anchoring lower ends, upper end are configured to mate to the corresponding end of girder and can limit the displacement of girder vertically upwards.The utility model has the beneficial effects that structure integrally can adapt to the foundation pile static loading test of more large-tonnage and can obtain the measurement accuracy increased.
Description
Technical field
The utility model relates to building fields, in particular to static test counterforce structure and static-load testing device.
Background technique
Static test is the test for testing foundation pile bearing capacity.It typically is using the counterforce structure for providing counter-force as base
Plinth, pushes foundation pile with top power device, then measures sedimentation value of the foundation pile under finder charge, obtains holding for foundation pile for calculating analysis
Carry power.
However experimental rig in the prior art is when carrying out the test for the foundation pile to large-tonnage that there are measurement results
The big problem of deviation.
Utility model content
The utility model is intended to provide a kind of static test counterforce structure, with solve experimental rig in the prior art with
There is a problem of that measurement result deviation is big when the foundation pile to large-tonnage carries out the test.
The another object of the utility model is to provide a kind of static test dress for having above-mentioned static test counterforce structure
It sets.
The embodiments of the present invention are achieved in that
The utility model embodiment provides a kind of static test counterforce structure comprising girder, column, slant-pull structure.It is vertical
Vertically vertically for branch set on the span centre position of girder upper surface, the part that girder is located at column two sides passes through slant-pull structure to column respectively
Tensioning is in the upper end of column, and the slant-pull structure of two sides is symmetrical about column.The length of girder is nearby respectively arranged with anchor to both ends
It is fixed in the resistance to plucking structure on basis, the setting of resistance to plucking structure anchoring lower ends, upper end are configured to mate to the corresponding end of girder and can limit
Determine the displacement of girder vertically upwards.
Static test counterforce structure in the present embodiment is for providing counter-force needed for static test.For to the quiet of foundation pile
When carrying test, two resistance to plucking structures are respectively arranged at the two sides of foundation pile to be tested, and anchoring lower ends are in basis.The following table of girder span centre
Face is supported in the upper end of foundation pile by top power device (such as jack).The upward top lift of jack is by static test counterforce structure
Balance, by being applied to the measurement and analytical calculation of the parameters such as the load of foundation pile and the sedimentation deformation of foundation pile under the system, obtains
The bearing capacity value of required pile foundation.
Being limited in the present embodiment by being set as the both ends of girder passing through resistance to plucking structure respectively, is capable of providing biggish
Counter-force is able to bear biggish upward sample load, and is adding column at girder center, at the both ends and column top of girder
It is separately connected slant-pull structure between end, increases the bending strength of girder, can adapt to balance in the anchoring pile counter-force of more large-tonnage
Method foundation pile static loading test.
The static test counterforce structure in the utility model embodiment is capable of providing larger counter-force, and corresponding master as a result,
Girder construction is configured to have biggish bending strength, is still able to maintain minimum bending in the foundation pile static loading test of large-tonnage
Deformation allows structure integrally to can adapt to the foundation pile of more large-tonnage to will measure and calculate control errors in smaller range
Static test and the measurement accuracy increased can be obtained.
In an embodiment of the present embodiment:
Resistance to plucking structure includes the cooperation girder for being anchored in the pulling resistant anchor pile on basis and connecting with pulling resistant anchor pile and is used for
Limit the limiting section of the upward displacement of girder.
In an embodiment of the present embodiment:
Resistance to plucking structure includes the secondary beam for being laminated on girder upper surface.Secondary beam extends along the direction perpendicular to girder, and secondary beam
It is long to each extend over out girder two sides to both ends.The length of secondary beam has position limiting structure to both ends corresponding matching, for limit secondary beam to
Upper displacement.Position limiting structure includes the reaction beam being laminated on secondary beam, the pulling resistant anchor pile for being anchored in basis and vertically limits reaction beam
Position it is connected to the anchor pole of pulling resistant anchor pile.
In an embodiment of the present embodiment:
Reaction beam extends along the direction perpendicular to secondary beam, and the length of reaction beam each extends over the two sides of place's secondary beam to both ends.
The length of reaction beam offers the channel vertically penetrated through to middle position to the width at both ends respectively.The length of reaction beam is distinguished to both ends
Pulling resistant anchor pile is connected to by an anchor pole.The anchor pole that the position of the corresponding channel of reaction beam passes through channel by one is connected to anti-
It weighs anchor stake.
In an embodiment of the present embodiment:
Resistance to plucking structure further includes joist.Joist is located at the lower section of girder.Girder is sandwiched in centre by joist and secondary beam.Secondary beam and
Anchor pole is cooperatively connected, for limiting shifting up for girder.Joist is vertically movably connected in anchor pole, to adjust girder
Gap width between vertical height and girder and top power device for applying top lift.
Based on being vertically movably connected in the joist of anchor pole under the embodiment, the present embodiment middle girder can be direct
It is carried on joist, it then can be by adjusting the position of joist vertically come the indirect vertical height that adjust girder and girder and use
Gap width between the top power device for applying top lift.
In an embodiment of the present embodiment:
Slant-pull structure is symmetrically disposed on two the first oblique pull parts of column two sides and is symmetrically disposed on two of column two sides
Second oblique pull part.The lower end of first oblique pull part is matched with the end of girder, and the second oblique pull part is matched with end and the span centre of girder
Between position.Angle between first oblique pull part and girder is less than the angle between the second oblique pull part and girder.
In an embodiment of the present embodiment:
First oblique pull part and the second oblique pull part include horizontal axis bracket, lower connection horizontal axis, upper connection horizontal axis and two drawings
Bar.Horizontal axis bracket is fixed on the lower end surface of girder, and lower connection horizontal axis is connected to horizontal axis bracket, and lower connection horizontal axis is axially vertical
In girder length to.The axial ends of lower connection horizontal axis is stretched out respectively except the two sides of girder.Upper connection horizontal axis is connected to vertical
The upper end close to corresponding upper connection horizontal axis side of column, and upper connection horizontal axis and lower connection horizontal axis are parallel.Two pull rods point
Not Wei Yu girder two sides, and be connected to connection horizontal axis and lower connection horizontal axis between the corresponding end of the side so that lower connection
Horizontal axis, upper connection horizontal axis and two pull rods connect the frame like structure to form rectangle.
In an embodiment of the present embodiment:
Connection type between pull rod and upper connection horizontal axis and/or between lower connection horizontal axis are as follows:
The through-hole radially penetrated through is opened up between upper connection horizontal axis and/or with the end of lower connection horizontal axis, the two of pull rod
End setting external screw thread, the end of pull rod passes through corresponding through-hole, and is threadingly attached to the spiral shell at the external screw thread of tie rod end
Mother is by pull rod tensioning in corresponding upper connection horizontal axis and lower connection horizontal axis.
In an embodiment of the present embodiment:
Upper connection horizontal axis is articulated in column.Lower connection horizontal axis is articulated in horizontal axis bracket.
The utility model embodiment also provides a kind of static-load testing device comprising top power device and static test above-mentioned are anti-
Power structure.Top power device is configured to vertically be supported in the upper surface to test pile.Static test counterforce structure is configured
At the span centre position for the lower surface for making its girder be supported in top power device upper end and make the anchoring lower ends of two resistance to plucking structures in
Basis is simultaneously located at two sides to test pile.
In summary it describing, the static test counterforce structure in the utility model embodiment is capable of providing larger counter-force, and
Corresponding main beam structure is configured to have biggish bending strength, is still able to maintain pole in the foundation pile static loading test of large-tonnage
Small bending deformation allows structure integrally to can adapt to bigger ton to will measure and calculate control errors in smaller range
Position foundation pile static loading test and the measurement accuracy increased can be obtained.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
A kind of topology view of embodiment of the static-load testing device in the utility model embodiment is shown in Fig. 1
(additionally illustrating with dashed lines in figure to test pile)；
Fig. 2 is the top view of Fig. 1；
The topology view of the another embodiment of the static-load testing device in the utility model embodiment is shown in Fig. 3
(additionally illustrating with dashed lines in figure to test pile)；
Fig. 4 is the top view of Fig. 3.
Icon: 010- static-load testing device；100- static test counterforce structure；B1- slant-pull structure；B4- the first oblique pull part；
B5- the second oblique pull part；B2- resistance to plucking structure；B3- position limiting structure；1- foundation pile；2- pulling resistant anchor pile；3- pushes up power device；4- girder；5- is vertical
Column；6- pull rod；Horizontal axis is connected on 71-；Horizontal axis is connected under 72-；8- secondary beam；9- horizontal axis bracket；10- reaction beam；11- connector；
12- joist；13- backing plate；14- anchor pole；15- nut；16- reaction plate；51- connection ear.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that if occur term " center ", "upper", "lower", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "inner", "outside" is orientation based on the figure or position
Relationship or the utility model product using when the orientation or positional relationship usually put, be merely for convenience of describing this reality
It is described with novel with simplified, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore should not be understood as limiting the present invention.If in addition, occurring in the description of the utility model
Term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
If being not offered as requiring component in addition, occurring the terms such as term "horizontal", "vertical" in the description of the utility model
Abswolute level or pendency, but can be slightly tilted.If "horizontal" only refers to that its direction is more horizontal with respect to for "vertical",
It is not to indicate that the structure is had to fully horizontally, but can be slightly tilted.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, if there is art
Language " setting ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachable
Connection, or be integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, centre can also be passed through
Medium is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Embodiment
A kind of structure view of embodiment of the static-load testing device 010 in the utility model embodiment is shown in Fig. 1
Scheme (additionally illustrating with dashed lines in figure to test pile 1)；Fig. 2 is the top view of Fig. 1.
Referring to Fig. 1, Fig. 2, the utility model embodiment also provides a kind of static-load testing device 010 comprising top power device 3 and
Static test counterforce structure 100.Top power device 3 is configured to vertically be supported in the upper surface to test pile 1, static test
Counterforce structure 100 are set on the power device 3 of top, for providing counter-force.Its application method is static test counterforce structure 100 and base
Plinth is fixedly connected, and top power device 3 applies top lift to static test counterforce structure 100, and the counter-force of the top lift is acted on by top power device 3
In the upper end of foundation pile 1.By measuring the parameters such as the sedimentation value to test pile 1 under the action of the counter-force, base is calculated in separation
The bearing capacity of stake 1.
Top power device 3 in the present embodiment can be the devices such as hydraulic jack.Optionally, it is set in the upper end pad of top power device 3
Backing plate 13 reduces damage of the top power device 3 to static test counterforce structure 100.
As described above, the static test counterforce structure 100 in the present embodiment is for providing counter-force.Utility model people is in work
In the journey time the study found that using counterforce structure in the prior art for finder charge is medium or lower test when, survey
The value accuracy error of the bearing capacity obtained is little, meets construction quality, safe design requirement；However it is being used for finder charge tonnage
It is often larger in the presence of bearing capacity value deviation is measured when biggish test (such as 300T load or so), or even greatly deviate from actual value
Situation, this brings biggish potential risk to the safety of Design of Foundation.To solve this problem, the application utility model
People provides a kind of novel static test counterforce structure 100, can be applied to the biggish test of finder charge tonnage, and obtain
The measurement result of degree of precision meets quality, the safe design requirement of pile foundation, meets engineering requirements.
Static test counterforce structure 100 in the present embodiment includes girder 4, column 5, slant-pull structure B1.Column 5 is vertically
Vertical branch is set to the span centre position of 4 upper surface of girder, and the part that girder 4 is located at 5 two sides of column passes through slant-pull structure B1 respectively
It draws in the upper end of column 5, and the slant-pull structure B1 of two sides is symmetrical about column 5.The length of girder 4 is nearby respectively arranged with to both ends
It is anchored in the resistance to plucking structure B2 on basis, the setting of resistance to plucking structure B2 anchoring lower ends, upper end are configured to mate to the corresponding end of girder 4 simultaneously
The displacement of girder 4 vertically upwards can be limited.Referring to Fig. 1 or Fig. 2, static test counterforce structure 100 is configured to make for cooperation
The span centre position of the lower surface of its girder 4 be supported in top power device 3 upper end and make the anchoring lower ends of two resistance to plucking structure B2 in
Basis is simultaneously located at two sides to test pile 1.
Static test counterforce structure 100 in the present embodiment is for providing counter-force needed for static test.For to foundation pile 1
Static test when, two resistance to plucking structure B2 are respectively arranged at the two sides of foundation pile 1 to be tested, and anchoring lower ends are in basis.Girder 4 across
In lower surface the upper end of foundation pile 1 is supported in by top power device 3 (such as jack).The upward top lift of jack is tried by static load
The balance of counterforce structure 100 is tested, by the measurement for being applied to the parameters such as the load of foundation pile 1 and the sedimentation deformation of foundation pile 1 under the system
And analytical calculation, obtain the bearing capacity value of required pile foundation.
It is set as passing through the both ends of girder 4 into resistance to plucking structure B2 limit respectively in the present embodiment, be capable of providing biggish anti-
Power is able to bear biggish upward sample load, and is adding column 5 at 4 center of girder, the both ends and column 5 in girder 4
It is separately connected slant-pull structure B1 between top, increases the bending strength of girder 4, can adapt to the anchoring pile counter-force in more large-tonnage
1 static test of balancing method foundation pile.The static test counterforce structure 100 in the utility model embodiment is capable of providing larger as a result,
Counter-force, and 4 structure of corresponding girder is configured to have biggish bending strength, so that the whole base that can adapt to more large-tonnage
1 static test of stake.
In an embodiment of the present embodiment, resistance to plucking structure B2 includes 2 He of pulling resistant anchor pile for being anchored in basis
The cooperation girder 4 being connect with pulling resistant anchor pile 2 and the limiting section for limiting the upward displacement of girder 4.Optionally, resistance to plucking structure B2
Secondary beam 8 including being laminated on 4 upper surface of girder.Secondary beam 8 is along the direction extension perpendicular to girder 4, and the length of secondary beam 8 is distinguished to both ends
Extend 4 two sides of girder.The length of secondary beam 8 has position limiting structure B3 to both ends corresponding matching, for limiting shifting up for secondary beam 8.
Position limiting structure B3 includes the reaction beam 10 being laminated on secondary beam 8, the pulling resistant anchor pile 2 for being anchored in basis and reaction beam 10 is vertical
Limit it is connected to the anchor pole 14 of pulling resistant anchor pile 2.Reaction beam 10 extends along the direction perpendicular to secondary beam 8, and the length of reaction beam 10
The two sides of place's secondary beam 8 are each extended over to both ends.The length of reaction beam 10 offers vertically to the width at both ends to middle position respectively
The channel of perforation.The length of reaction beam 10 passes through an anchor pole 14 respectively to both ends and is connected to pulling resistant anchor pile 2.The correspondence of reaction beam 10
The anchor pole 14 that the position in channel passes through channel by one is connected to pulling resistant anchor pile 2.Optionally, resistance to plucking structure B2 further includes joist
12.Joist 12 is located at the lower section of girder 4.Girder 4 is sandwiched in centre by joist 12 and secondary beam 8.Secondary beam 8 and anchor pole 14 are cooperatively connected,
For limiting shifting up for girder 4.Joist 12 is vertically movably connected in anchor pole 14, to adjust the vertical height of girder 4
Gap width between degree and girder 4 and top power device 3 for applying top lift.Based on vertically movable under the embodiment
Ground is connected to the joist 12 of anchor pole 14, and the present embodiment middle girder 4 can be directly carried on joist 12, then can be by vertically adjusting
To adjust indirectly between the vertical height and girder 4 and top power device 3 for applying top lift of girder 4 in the position of section joist 12
Gap width.
In the present embodiment, settable anchor pole 14 sequentially passes through joist 12, secondary beam 8, reaction beam 10, and in the upper end of anchor pole 14
15 or less threaded coupling nut is pressed on reaction beam 10, drags joist 12 in 15 or more the middle part threaded coupling nut of anchor pole 14.It needs
When can be adjusted by adjusting above and below nut 15 be defined between joist 12 and secondary beam 8 height of girder 4 and with top
Gap between power device 3.In the present embodiment, pulling resistant anchor pile 2 can be fixed in basis with one end, the other end is set as stretching out basis
The connector 11 of the plate-like on surface, 14 lower end of anchor pole are arranged through the connector 11 of pulling resistant anchor pile 2, and are threadingly attached to
The lower surface of the connector 11 of pulling resistant anchor pile 2 is pressed on the nut 15 of 14 lower end of anchor pole.Optionally, the settable threaded rod of anchor pole 14,
Outer surface is all distributed external screw thread.
Optionally, reaction plate 16 is set in the upper surface pad that anchor pole 14 passes through place on reaction beam 10, nut 15 directly presses
In on reaction plate 16, to protect reaction beam 10.
Girder 4, secondary beam 8 in the present embodiment may be configured as box-beam structure.
With continued reference to Fig. 1, Fig. 2, in the present embodiment, slant-pull structure B1 is symmetrically disposed on two first of 5 two sides of column tiltedly
Draw piece B4 and two the second oblique pull part B5 for being symmetrically disposed on 5 two sides of column.The lower end of first oblique pull part B4 is matched with girder 4
End, the second oblique pull part B5 are matched with the position between the end and span centre of girder 4.Between first oblique pull part B4 and girder 4
Angle is less than the angle between the second oblique pull part B5 and girder 4.Such as the first angle between oblique pull part B4 and girder 4 is set as
30 °, the angle between the second oblique pull part B5 and girder 4 is set as 45-60 °.Optionally, the first oblique pull part B4 and the second oblique pull part
B5 includes horizontal axis bracket 9, lower connection horizontal axis 72, upper connection horizontal axis 71 and two pull rods 6.Horizontal axis bracket 9 is fixed on girder 4
Lower end surface, lower connection horizontal axis 72 is connected to horizontal axis bracket 9, and the length for being axially perpendicular to girder 4 of lower connection horizontal axis 72 to.Under
The axial ends of connection horizontal axis 72 is stretched out respectively except the two sides of girder 4.Upper connection horizontal axis 71 is connected to the close right of column 5
The upper end for upper 71 side of connection horizontal axis answered, and upper connection horizontal axis 71 and lower connection horizontal axis 72 are parallel.Two pull rods 6 distinguish position
In the two sides of girder 4, and connection horizontal axis 71 and lower connection horizontal axis 72 are connected between the corresponding end of the side, so that lower connection
Horizontal axis 72, upper connection horizontal axis 71 and two pull rods 6 connect the first oblique pull part B4 or the institute for the frame like structure for forming rectangle
State the second oblique pull part B5.
In an embodiment of the present embodiment, between pull rod 6 and upper connection horizontal axis 71 and/or with lower connection horizontal axis 72
Between connection type are as follows: open up between upper connection horizontal axis 71 and/or with the end of lower connection horizontal axis 72 and radially penetrate through
External screw thread is arranged in through-hole, the both ends of pull rod 6, and the end of pull rod 6 passes through corresponding through-hole, and is threadingly attached to 6 end of pull rod
Nut 15 at the external screw thread in portion is by 6 tensioning of pull rod in corresponding upper connection horizontal axis 71 and lower connection horizontal axis 72.Upper connection horizontal axis
71 are articulated in column 5.Lower connection horizontal axis 72 is articulated in horizontal axis bracket 9.Optionally, two be matched at connection 71 both ends of horizontal axis
By wirerope (not shown) to tension between nut 15, to prevent 6 stress overloading fault termination of pull rod from flying out.
Optionally, the two sides of the upper end of the present embodiment central post 5 each extend over the connection ear 51 to form two intervals, upper company
It connects horizontal axis 71 and is articulated in being correspondingly connected between ear 51 of column 5, and the both ends of upper connection horizontal axis 71 are stretched out outside connection ear 51
Side, for the pull rod 6 that is cooperatively connected.Wherein for cooperating the engaging lug of the first oblique pull part B4 compared to for cooperating the second oblique pull part
The engaging lug of B5 is more top.
Fig. 3, Fig. 4 show the another embodiment of the static-load testing device 010 of the utility model, with Fig. 1, Fig. 2
The technical solution that shows the difference is that, the girder 4 of Fig. 3 Fig. 4 is shorter, accordingly, the slant-pull structure B1 positioned at 5 two sides of column
An oblique pull part is only arranged to connect.
In summary it describing, the static test counterforce structure 100 in the utility model embodiment is capable of providing larger counter-force,
And corresponding 4 structure of girder is configured to have biggish bending strength, so that the whole foundation pile 1 that can adapt to more large-tonnage is quiet
Carry test.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of static test counterforce structure, it is characterised in that:
Including girder, column, slant-pull structure；
The column vertically vertically props up the span centre position for being set to the girder upper surface, and the girder is located at the column two sides
Part respectively by the slant-pull structure tensioning in the upper end of the column, and the slant-pull structure of two sides is about described vertical
Column symmetry；
The length of the girder is nearby respectively arranged with the resistance to plucking structure for being anchored in basis, the resistance to plucking structure anchoring lower ends to both ends
It is arranged, upper end is configured to mate to the corresponding end of the girder and can limit the displacement of the girder vertically upwards.
2. static test counterforce structure according to claim 1, it is characterised in that:
The resistance to plucking structure includes the cooperation master for being anchored in the pulling resistant anchor pile on basis and connecting with the pulling resistant anchor pile
Beam and the limiting section for being used to limit the upward displacement of girder.
3. static test counterforce structure according to claim 1, it is characterised in that:
The resistance to plucking structure includes the secondary beam for being laminated on the girder upper surface；
The secondary beam extends along the direction perpendicular to the girder, and the length of the secondary beam each extends over out the girder to both ends
Two sides；
The length of the secondary beam has position limiting structure to both ends corresponding matching, for limiting shifting up for the secondary beam；
The position limiting structure include the reaction beam being laminated on the secondary beam, be anchored in basis pulling resistant anchor pile and will it is described instead
Power beam vertical spacing it is connected to the anchor pole of the pulling resistant anchor pile.
4. static test counterforce structure according to claim 3, it is characterised in that:
The reaction beam extends along the direction perpendicular to the secondary beam, and to both ends to each extend over place described for the length of the reaction beam
The two sides of secondary beam；The length of the reaction beam offers the channel vertically penetrated through to middle position to the width at both ends respectively；
The length of the reaction beam passes through the anchor pole respectively to both ends and is connected to the pulling resistant anchor pile；Pair of the reaction beam
The anchor pole for answering the position in the channel to pass through the channel by one is connected to the pulling resistant anchor pile.
5. static test counterforce structure according to claim 3, it is characterised in that:
The resistance to plucking structure further includes joist；The joist is located at the lower section of the girder；
The girder is sandwiched in centre by the joist and the secondary beam；The secondary beam and the anchor pole are cooperatively connected, for limiting
The girder shifts up；The joist is vertically movably connected in the anchor pole, to adjust the vertical of the girder
Gap width between height and girder and top power device for applying top lift.
6. static test counterforce structure according to claim 1, it is characterised in that:
The slant-pull structure is symmetrically disposed on two the first oblique pull parts of the column two sides and is symmetrically disposed on the column two
Two the second oblique pull parts of side；
The lower end of the first oblique pull part is matched with the end of the girder, and the second oblique pull part is matched with the end of the girder
Position between portion and span centre；Angle between the first oblique pull part and the girder be less than the second oblique pull part with it is described
Angle between girder.
7. static test counterforce structure according to claim 6, it is characterised in that:
The first oblique pull part and the second oblique pull part include horizontal axis bracket, lower connection horizontal axis, upper connection horizontal axis and two
A pull rod；
The horizontal axis bracket is fixed on the lower end surface of the girder, and the lower connection horizontal axis is connected to the horizontal axis bracket, and institute
State it is lower connection horizontal axis the length for being axially perpendicular to the girder to；The axial ends of the lower connection horizontal axis stretches out the master respectively
Except the two sides of beam；
The upper connection horizontal axis is connected to the upper end close to corresponding upper connection horizontal axis side of the column, and upper connection horizontal axis
It is parallel with the lower connection horizontal axis；
Two pull rods are located at the two sides of the girder, and are connected to the upper connection horizontal axis and the lower connection horizontal axis
Between the corresponding end of the side, so that the lower connection horizontal axis, the upper connection horizontal axis and two pull rods connect to be formed
The frame like structure of rectangle.
8. static test counterforce structure according to claim 7, it is characterised in that:
Connection type between the pull rod and the upper connection horizontal axis and/or between the lower connection horizontal axis are as follows:
The through-hole radially penetrated through is opened up between the upper connection horizontal axis and/or with the end of the lower connection horizontal axis, it is described
External screw thread is arranged in the both ends of pull rod, and the end of the pull rod passes through corresponding through-hole, and is threadingly attached to tie rod end
Nut at external screw thread is by the pull rod tensioning in the corresponding upper connection horizontal axis and the lower connection horizontal axis.
9. static test counterforce structure according to claim 7, it is characterised in that:
The upper connection horizontal axis is articulated in the column；The lower connection horizontal axis is articulated in the horizontal axis bracket.
10. a kind of static-load testing device, it is characterised in that:
The static-load testing device includes top power device and the described in any item static test counterforce structures of claim 1-9；
The top power device is configured to vertically be supported in the upper surface to test pile；
The static test counterforce structure is configured to make the span centre position of the lower surface of its girder to be supported in the top power device
Upper end and makes the anchoring lower ends of two resistance to plucking structures in basis and be located at two sides to test pile.
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| CN110295632A (en) * | 2019-07-12 | 2019-10-01 | 周家樑 | A kind of single pile bearing capacity method and its experimental rig |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110295632A (en) * | 2019-07-12 | 2019-10-01 | 周家樑 | A kind of single pile bearing capacity method and its experimental rig |
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