CN206570817U - A kind of dynamic regulation system of two-way steel support structure - Google Patents
A kind of dynamic regulation system of two-way steel support structure Download PDFInfo
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- CN206570817U CN206570817U CN201621216419.1U CN201621216419U CN206570817U CN 206570817 U CN206570817 U CN 206570817U CN 201621216419 U CN201621216419 U CN 201621216419U CN 206570817 U CN206570817 U CN 206570817U
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- connection component
- jack
- axle power
- outer case
- support structure
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Abstract
The utility model provides a kind of dynamic regulation system of two-way steel support structure, including two-way steel support structure, axle power loading tool and control centre；Two-way steel support structure includes the Flexible Node for being arranged at horizontal support and vertical support junction；Flexible Node includes outer case, internal box, the first connection component and the second connection component, and outer case surface offers coaxial the first hole and the second hole, and internal box is arranged inside outer case；First connection component and the second connection component are each passed through the first hole and the second hole is connected with internal box；Set and have elastic component between the outer wall of internal box and the inwall of outer case；Axle power loading tool carries out axle power loading to horizontal support or vertical support；Control centre controls the working condition of axle power loading tool.The utility model solve two-way steel support structure additional bending moment when axle power is loaded in the prior art it is excessive and can not to two-way steel support structure carry out real-time monitoring the problem of.
Description
Technical field
The utility model belongs to the realm of building construction, is related to a kind of dynamic regulation system of two-way steel support structure.
Background technology
At present in Large Foundation Pit construction, large underground area is excavated typically is used as the level branch in hole using armored concrete
Support, or it is divided into after several sleeve configuration foundation ditches progress bracing members temporary support, but this by setting up dividing wall by Large Foundation Pit
The construction cost for planting way is higher, and construction period is also very long, and concrete structure is that workload is removed after the completion of construction greatly,
Noise is big, seriously polluted, is unfavorable for environmental protection.
Current another method is exactly that it overcomes concrete as the horizontal support after underground excavation with two-way bracing members
The shortcoming of horizontal support, with reusable, the advantages of beneficial to environmental protection.
It is by being supported to applying prestressing force formation in end by root bracing members during using conventional two-way steel support structure
System, it vertically and horizontally supports intersection typically to use flange joint or anchor ear node, and this support node is rigid joint.It is non-
Professional person often ignore and applicant have observed that be：There is application and in advance should in two-way steel support structure when applying prestressing force
The sequencing of power and the axial deformation of support, apply prestressed support and produce axial crushing deformation.Due to rigid joint
Presence, this axial crushing deformation can be directly passed to by rigid joint it is vertical to support, vertically to support will
Bend, bending it is vertical to support will necessarily be pair with applying a neighbouring bracing members in the same direction generation node of prestressed support
Additional bending moment, can so be stepped up the stress of bracing members.Therefore, after construction to some supports, previous construction stress
Bracing members stress is stepped up, and can be caused the overstressing of support system and be failed.
As shown in figure 1, installing jack at the digital position shown in lower Fig. 1, and apply prestressing force one by one by numerical order
(such as 756 tons), i.e., first apply No. 1 support prestressing force, then applies No. 2 support prestressing force, then gradually applies to No. 12 supports
Prestressing force, according to sequence number apply stress during, apply stress value gradually increase, result of calculation shows, the 1st time plus
Maximum stress value during load is -160.5MPa, and it is last apply No. 12 support prestressing force when, stress value reach maximum -
391.8Mpa。
Above-mentioned result of calculation shows, because the two-way steel support structure using rigid joint is applying prestressing force by root
When, the bracing members for causing construction in later period are produced to the effect of additional bending moment to having applied prestressed bracing members, respective support
Stress maximum increases to 391.8MPa by 160.5MPa, when the tolerance range more than steel support structure, it is possible to cause branch
The overstressing of support body system and fail.
Utility model content
The purpose of this utility model is to provide a kind of dynamic regulation system of two-way steel support structure, solution prior art
In two-way steel support structure additional bending moment and additional stress when axle power is loaded it is excessive and two-way steel support structure can not be carried out
The problem of real-time monitoring.
In order to solve the above technical problems, the utility model provides a kind of dynamic regulation system of two-way steel support structure,
Including two-way steel support structure, axle power loading tool and control centre；
The two-way steel support structure includes mutually perpendicular horizontal support and vertical support and is arranged at the level
Support and the Flexible Node of the vertical support junction；
The Flexible Node includes outer case, internal box, the first connection component and the second connection component, and the outer case is
Hollow structure, its surface offers coaxial the first hole and the second hole, and the internal box is arranged inside the outer case；
First connection component and second connection component are each passed through first hole and second hole
It is connected with the internal box；
Set and have elastic component between the outer wall of the internal box and the inwall of the outer case；
The horizontal support is connected with the outer case, the vertical support respectively with first connection component and described
Second connection component is connected；
The axle power loading tool carries out axle power loading to the horizontal support or the vertical support；
The control centre controls the working condition of the axle power loading tool.
Further, the outer case and internal box are cube；
Four faces of the outer case and horizontal plane are respectively the first face and the second face being parallel to each other, are parallel to each other
The 3rd face and fourth face, coaxial the first hole and the second hole is offered respectively on first face and the second face.
Further, two faces of the internal box and plane-parallel are fixed with sliding part, the sliding part and institute
State the inwall contact of outer case.
Further, the Flexible Node also includes the 3rd connection component and the 4th connection component,
First connection component runs through first hole, and its one end is connected with the internal box, the other end for
The vertical support connection；
Second connection component runs through second hole, and its one end is connected with the internal box, the other end for
The vertical support connection；
Described 3rd connection component one end is connected with the 3rd face of the outer case, and the other end is used for and the horizontal support
Connection；
Described 4th connection component one end is connected with the fourth face of the outer case, and the other end is used for and the horizontal support
Connection.
Further, first connection component and second connection component welded with the internal box or one into
Type；
3rd connection component and the 4th connection component are welded or are integrally formed with the outer case.
Further, first connection component includes head rod and first flange, and the second connection component includes the
Two connecting rods and second flange, the 3rd connection component include the 3rd connecting rod and the 3rd flange, and the 4th connection component includes the 4th
Connecting rod and the 4th flange,
The head rod runs through first hole, and its one end is connected with the internal box, the other end and described the
One flange is connected, and the first flange is used to be connected with the vertical support；
Second connecting rod runs through second hole, and its one end is connected with the internal box, the other end and described the
Two flanges are connected, and the second flange is used to be connected with the vertical support；
Described 3rd connecting rod one end is connected with the 3rd face of the outer case, and the other end is connected with the 3rd flange,
3rd flange is used to be connected with the horizontal support；
Described 4th connecting rod one end is connected with the fourth face of the outer case, and the other end is connected with the 4th flange,
4th flange is used to be connected with the horizontal support.
Further, the flexible member is disk spring.
Further, the axle power loading tool is jack, and the jack is passed provided with pressure sensor and displacement
Sensor,
The pressure sensor is used for the axle power for determining the jack loading, and institute's displacement sensors are used to determine described
The length that jack stretches out；
The control centre receives the data that the pressure sensor and institute's displacement sensors are determined.
The utility model additionally provide it is a kind of using above-mentioned regulator control system to two-way steel support structure carry out dynamic regulation
Method, comprise the following steps：
S1：Bracing members in the two-way steel support structure are grouped, the control centre is to the steel in same group
Support corresponding jack to synchronize regulation and control, according to setting shaft force value control the jack pair with the bracing members in group simultaneously
Axle power loading is carried out, when loading is completed, institute's displacement sensors regard the extension elongation of the jack measured as benchmark position
Shifting is transferred to the control centre；
S3：Institute's displacement sensors monitor the real-time extension elongation of the jack and are transferred to the control centre；
S4：The real-time extension elongation of the jack and the basis displacement are compared for the control centre；
S5：When the real-time extension elongation and the basis displacement are unequal, control centre's control is with group
The working condition of all jack, makes the real-time extension elongation of all jack be equal to the basis displacement.
Further, the jack is hydraulic jack, in the S1, all bracing members in same group are corresponding
Jack accesses same pumping plant, and the control centre is driven with all jack in group while work by the pumping plant
Make, complete to load the axle power of the bracing members in same group.
It is preferred that, the control centre is computer automatic control system, and the computer automatic control system passes through PLC
Pumping plant is controlled to drive the jack.
Further, the S1 is specifically included：Bracing members in two-way steel support structure are grouped, by identical axle power
Bracing members are divided into one group, and the control centre synchronizes regulation and control to the corresponding jack of bracing members in same group.
Further, the S1 is specifically included：Bracing members in two-way steel support structure are grouped, by all water
Flat bracing members and all vertical bracing members are divided into same group, the control centre very heavy jacking corresponding to all bracing members
Row synchronization modulation.
Further, the S1 is specifically included：All Horizontal steelwork bracings are divided into same group, it is all described vertical
Bracing members are divided into another group, first prestressing force loading are carried out simultaneously to all Horizontal steelwork bracings, then again to vertical bracing members
Prestressing force loading is carried out simultaneously.
Further, the S1 is specifically included：
S1.1：The Horizontal steelwork bracing and the vertical bracing members are installed, then installs and the Horizontal steelwork bracing is carried out
The jack of axle power loading, but the jack that the vertical bracing members are carried out with axle power loading is not installed；
S1.2：The control centre synchronizes regulation and control to the corresponding jack of all Horizontal steelwork bracings, to all
The Horizontal steelwork bracing carries out axle power loading simultaneously；
S1.3：The jack that the vertical bracing members are carried out with axle power loading is installed；
S1.4：The control centre synchronizes regulation and control to the corresponding jack of all vertical bracing members, to all
The vertical bracing members carry out axle power loading simultaneously.
Further, the S1.2 is specifically included：The corresponding jack of all Horizontal steelwork bracings is accessed in the first pumping plant,
Using control centre by all jack in first pumping plant synchronously first group of driving, the Horizontal steelwork bracing is carried out
Prestressing force is loaded；
The S1.4 is specifically included：The corresponding jack of all vertical bracing members is accessed in the second pumping plant, using control
Centrally through all jack in second pumping plant synchronously second group of driving, prestressing force is carried out to the vertical bracing members and added
Carry.
Further, the S1 is specifically included：It is simultaneously right from the two ends of bracing members when carrying out axle power loading to bracing members
Bracing members carry out axle power loading.
Further, the S1 is specifically included：One jack, control centre's control are respectively set at the two ends of bracing members
Two jack of system carry out axle power loading to bracing members simultaneously.
Further, the S1 is specifically included：One jack is set in the middle part of bracing members, using described very heavy
Jacking row axle power is loaded.
Further, the S5 is specifically included：When the corresponding jack of any one bracing members extension elongation with it is described
When basis displacement is unequal, control centre's control is adjusted with the corresponding jack of all bracing members in group, is made same
The extension elongation of all jack in group is equal to the basis displacement.
Further, the dynamic regulation system also includes PTO, the PTO and described thousand
The connection of jin top, power is provided to the jack；The control centre is connected with the PTO, controls described dynamic
The power output of power output device.
Further, the PTO is electrohydraulic dynamic device, and the electrohydraulic dynamic device includes proportional overflow
Valve, the control centre is connected with the proportional pressure control valve, controls the work of the proportional pressure control valve, and the S1 includes：It is described
Control centre controls the proportional pressure control valve, makes its regulation to setting pressure, the PTO is defeated to the jack
Go out power.
Further, the S1 is specifically included：
Bracing members in the two-way steel support structure are grouped, the control centre controls the power output dress
Put, adjust its power output, the PTO is given with all jack output power in group；
The bracing members in same group are carried out with axle power loading, loading according to setting shaft force value with all jack in group
During completion, the extension elongation of the jack measured is transferred in the control by institute's displacement sensors as basis displacement
The heart.
Further, the S5 is specifically included：When the jack extension elongation is more than the basis displacement,
The control centre controls the PTO to export power to the jack, and the jack is in setting
Its extension elongation is adjusted under axle power value, the extension elongation is foreshortened to equal to the basis displacement.
Further, in the S5, when the extension elongation of the jack is more than the basis displacement, the jack exists
Can not shorten under setting shaft force value its extension elongation make the extension elongation be equal to the basis displacement when,
The jack pair bracing members carry out axle power off-load, and adjust its extension elongation, make the stretching of the jack long
Degree is equal to the basis displacement, and the pressure sensor regard axle power value of the now jack after off-load as new setting shaft
Force value is transferred to the control centre.
Further, in the S5, when the jack pair bracing members carry out axle power off-load, using the side of stepping off-load
Formula, the axle power value that each off-load of jack is fixed, and adjust shortening its extension elongation, by stepping off-load and adjustment for several times, directly
Extension elongation to the jack is foreshortened to equal to the basis displacement.
Further, the S5 is specifically included：When the jack extension elongation is less than the basis displacement,
The control centre controls the PTO to export power to the jack, and the jack is in setting
Its extension elongation is adjusted under axle power value, the extension elongation is foreshortened to equal to the basis displacement.
Further, in the S5, when the extension elongation of the jack is less than the basis displacement, the jack exists
Can not be adjusted under setting shaft force value its extension elongation make the extension elongation be equal to the basis displacement when,
The jack pair bracing members carry out axle power loading, and adjust its extension elongation, make the stretching of the jack long
Degree is equal to the basis displacement, and the pressure sensor regard axle power value of the now jack after off-load as new setting shaft
Force value is transferred to the control centre.
Further, in the S5, when the jack pair bracing members carry out axle power loading, the side loaded using stepping
Formula, jack loads fixed axle power value every time, and adjusts its extension elongation, loads and adjusts by stepping for several times, until institute
The extension elongation for stating jack is foreshortened to equal to the basis displacement.
Further, the jack carries out axle power loading by way of stepping is loaded to bracing members, when described very heavy
When the axle power value of top loading is equal to the maximum internal stress of bracing members itself unstability, the jack stops axle power loading, the pressure
The axle power value of now jack is transferred to the control centre by force snesor as axle power higher limit.
Compared with prior art, the dynamic regulation system for the two-way steel support structure that the utility model is provided, is on the one hand adopted
With Flexible Node, horizontal support is set to be not directly contacted with vertical support, when loading axle power to horizontal support, horizontal support is produced
Compression will not directly act on the vertical support being connected with internal box so that the lateral displacement of vertical support subtracts significantly
It is small, it is thus effective to reduce the additional bending moment produced during the loading of horizontal support axle power to vertical support, improve whole two-way
The force-bearing situation of steel support structure；On the other hand, axle power loading tool is controlled by control centre, can be achieved to bracing members axle power
Real-time monitoring, prevent because external environment change cause the stress of the two-way steel support structure loaded to change.This practicality
The regulation and control method of new offer can realize the real-time monitoring to two-way steel axial force of the supports and displacement under various different operating modes, be
Base pit engineering temporary steel support support system provides safer guarantee.
Brief description of the drawings
Fig. 1 is the schematic diagram of two-way steel support structure axle power loading in the prior art；
Fig. 2 is a kind of schematic diagram of the dynamic regulation system for two-way steel support structure that the utility model embodiment is provided；
Fig. 3-4 be the utility model embodiment provide a kind of two-way steel support structure dynamic regulation system in flexible joint
The structural representation of point；
Fig. 5-8 be a kind of two-way steel support structure that the utility model embodiment is provided dynamic regulation method in it is a kind of right
Steel support structure carries out the schematic diagram of the method for axle power loading.
Embodiment
Below in conjunction with the drawings and specific embodiments to the utility model proposes a kind of two-way steel support structure dynamic adjust
Control system is described in further detail.According to following explanation and claims, advantages and features of the present utility model will be more clear
Chu.It should be noted that, accompanying drawing is using very simplified form and uses non-accurately ratio, only to conveniently, lucidly
Aid in illustrating the purpose of the utility model embodiment.
As in Figure 2-4, the utility model provides a kind of dynamic regulation system of two-way steel support structure, and its feature exists
In, including two-way steel support structure, axle power loading tool 4 and control centre；
The two-way steel support structure includes mutually perpendicular horizontal support 1 and vertical support 2 and is arranged at the water
Flat support 1 and the Flexible Node 3 of the junction of the vertical support 2；
The Flexible Node 3 includes outer case 31, internal box 32, the first connection component 35 and the second connection component 36, institute
Outer case 31 is stated for hollow structure, its surface offers coaxial the first hole 311 and the second hole 312, the internal box 32
It is arranged inside the outer case 31；
First connection component 35 and second connection component 36 are each passed through first hole 311 and described
Two holes 312 are connected with the internal box 32；
Set between the outer wall of the internal box 32 and the inwall of the outer case 31 and have elastic component 33；
The horizontal support 1 is connected with the outer case 31, the vertical support 2 respectively with first connection component 35
Connected with second connection component 36；
4 pairs of the axle power loading tool horizontal support 1 or the vertical support 2 carry out axle power loading；
The control centre controls the working condition of the axle power loading tool 4.
In the scheme of the present embodiment, Flexible Node 3 includes inside and outside casing, between the two provided with flexible member 33, level
Support 1 is connected with outer case 31, and vertical support 2 is connected with internal box 32, now, and horizontal support 1 does not connect directly with vertical support 2
Touch, when loading axle power to horizontal support 1, horizontal support 1 can produce compression, now, and the axle power of horizontal support 1 can be transmitted
To outer case 31, outer case 31 is set to produce axial displacement, because outer case 31 is to connect by flexible member 33 with internal box 32
Connect, now, the displacement of outer case 31 will not directly act on internal box 32, but first can transmit the axle power of horizontal support 31
To flexible member 33, the deformation of the forced compression of flexible member 33, so, the displacement that flexible member 33 passes to internal box 32 can significantly
Reduce, i.e. the now displacement of internal box 32 is by less than the displacement of outer case 31, and the side for the vertical support 2 being connected with internal box 32
It will also be greatly reduced to displacement.By above-mentioned technical proposal, propped up when can effectively reduce the loading of the axle power of horizontal support 1 vertical
The additional bending moment that support 2 is produced.Similarly, when carrying out axle power loading to vertical support 2, it will also significantly reduce to horizontal support 1
The additional bending moment of generation.On this basis, the utility model is also regulated and controled by control centre to axle power loading tool 4, can
To realize that the implementation to two-way steel support structure regulates and controls, prevent because external environment changes the two-way bracing members knot for causing to have loaded
The stress of structure changes.
Further, the outer case 31 and internal box 32 be cube (can also be other shapes, such as it is spherical
Deng), the outer case 31 is with being respectively the first face and the second face being parallel to each other on four faces of horizontal plane, being parallel to each other
The 3rd face and fourth face, coaxial the first hole 311 and the second hole is offered respectively on first face and the second face
312。
Further, two faces of the internal box 32 and plane-parallel are fixed with sliding part 34, the sliding part
34 contact with the inwall of the outer case 31.
It is preferred that, the sliding part 34 is stainless steel plate, and two faces of the internal box 32 and plane-parallel are with one
Stainless steel plate is welded, and the stainless steel plate and the contact surface coating of the outer case 31 apply lubricating oil.Such scheme can be effective
The Influence of Displacement for reducing the frictional force that relative motion is produced between internal box 32 and outer case 31, reducing between the two.It is preferred that
, stainless steel plate welding can also the less object replacement of other coefficient of frictions.
Further, the Flexible Node 3 also includes the 3rd connection component 37 and the 4th connection component 38,
First connection component 35 runs through first hole 311, and its one end is connected with the internal box 32, another
End is connected with the vertical support 2；
Second connection component 36 runs through second hole 312, and its one end is connected with the internal box 32, the other end
It is connected with the vertical support 2；
Described one end of 3rd connection component 37 is connected with the 3rd face of the outer case 31, the other end and the horizontal support
1 connection；
Described one end of 4th connection component 38 is connected with the fourth face of the outer case 31, the other end and the horizontal support
1 connection.
Further, first connection component 35 and second connection component 36 are welded or one with the internal box 32
It is body formed；
3rd connection component 37 and the 4th connection component 38 are welded or are integrally formed with the outer case 31.
Further, first connection component 35 includes head rod 351 and first flange 352, the second connection group
Part 36 includes the second connecting rod 361 and second flange 362, and the 3rd connection component 37 includes the 3rd connecting rod 371 and the 3rd flange
372, the 4th connection component 38 includes the 4th connecting rod 381 and the 4th flange 382,
The head rod 351 runs through first hole 311, and its one end is connected with the internal box 32, the other end
It is connected with the first flange 352, the vertical support 2 is connected with the first flange 352；
Second connecting rod 361 runs through second hole 312, and its one end is connected with the internal box 32, the other end
It is connected with the second flange 362, the vertical support 2 is connected with the second flange 362；
Described one end of 3rd connecting rod 371 is connected with the 3rd face of the outer case 31, the other end and the 3rd flange
372 connections, the horizontal support 1 is connected with the 3rd flange 372；
Described one end of 4th connecting rod 381 is connected with the fourth face of the outer case 31, the other end and the 4th flange
382 connections, the horizontal support 1 is connected with the 4th flange 382.
It is preferred that, the outer case 31 includes symmetrical left box body and right case, and the left box body and the right case are logical
Cross bolt connection and constitute the outer case 31.Outer case 31 is arranged to two parts, can be during installation so that interior case
Body 32 is easier to be installed inside outer case 31.
It is preferred that, the flexible member 33 is disk spring.The disk spring of a certain specification of selection should be with bracing members
Resistance to overturning of the system in the construction stage is adapted, and prevents bracing members unstability, in the present embodiment, the disk spring of selection because
Power needed for its compression 75% is noted is the support force of bracing members unstability, prevents bracing members unstability.
In such scheme, the axle power loading tool 4 is jack, and the jack is provided with pressure sensor and position
Displacement sensor,
The pressure sensor is used for the axle power for determining the jack loading, and institute's displacement sensors are used to determine described
The length that jack stretches out；
The control centre receives the data that the pressure sensor and institute's displacement sensors are determined.
As preferred, jack can be respectively provided with the two ends of the horizontal support 1 or the vertical support 2, carried out
When axle power is loaded, the jack at two ends carries out axle power loading simultaneously.Two ends carry out axle power loading simultaneously, can effectively reduce steel
The slenderness ratio of support, reduces additional bending moment and additional stress.
The utility model additionally provide it is a kind of using above-mentioned regulator control system to two-way steel support structure carry out dynamic regulation
Method, comprise the following steps：
S1：Bracing members in the two-way steel support structure are grouped, the control centre is to the steel in same group
Support corresponding jack to synchronize regulation and control, according to setting shaft force value control the jack pair with the bracing members in group simultaneously
Axle power loading is carried out, when loading is completed, institute's displacement sensors regard the extension elongation of the jack measured as benchmark position
Shifting is transferred to the control centre；
S3：Institute's displacement sensors monitor the real-time extension elongation of the jack and are transferred to the control centre；
S4：The real-time extension elongation of the jack and the basis displacement are compared for the control centre；
S5：When the real-time extension elongation and the basis displacement are unequal, control centre's control is with group
The working condition of all jack, makes the real-time extension elongation of all jack be equal to the basis displacement.
Further, the jack is hydraulic jack, in the S1, by all very heavy apical graftings in same group
Enter same pumping plant, the control centre is worked simultaneously by pumping plant driving with all jack in group, completion pair
Axle power with the bracing members in group is loaded.In the above-mentioned technical solutions, specifically, in the end of bracing members and base pit engineering
Go along with sb. to guard him between install a jack, then using the jack simultaneously in same group bracing members carry out prestressing force add
Carry.It may occur to persons skilled in the art that, when carrying out prestressing force loading to bracing members, it should be not only limited to use thousand
Jin top, can also be using other instruments such as hydraulic jack.Therefore, prestressing force loading is carried out using different instruments, should
Fall within protection domain of the present utility model.
Further, the control centre is computer automatic control system, and the computer automatic control system passes through
PLC control pumping plants drive the jack.It is uniformly controlled, can be avoided because manually-operated using computer automatic control system
Jack produces otherness in synchronous working caused by otherness, and more efficient.
Further, the S1 is specifically included：Bracing members in two-way steel support structure are grouped, by identical axle power
Bracing members are divided into one group, and the control centre synchronizes regulation and control to the corresponding jack of bracing members in same group.
Further, the S1 is specifically included：Bracing members in two-way steel support structure are grouped, will be all described
Horizontal steelwork bracing and all vertical bracing members are divided into same group, and the control centre is to the corresponding jack of all bracing members
Synchronize regulation and control.Prestressing force is applied to all bracing members simultaneously, can will apply additional bending moment shadow caused by prestressing force by root
Ring be reduced to it is minimum so that steel support structure apply it is prestressed during do not influenceed by excessive additional stress, can be with
The stability of steel support structure is effectively ensured.
As viewed in figures 5-8, further, the S1 is specifically included：All Horizontal steelwork bracings are divided into same group, institute
There is the vertical steel support to be divided into another group, prestressing force loading is first carried out simultaneously to all Horizontal steelwork bracings, it is then right again
Vertical bracing members carry out prestressing force loading simultaneously.
Further, the S1 is specifically included：
S1.1：The Horizontal steelwork bracing and the vertical bracing members are installed, then installs and the Horizontal steelwork bracing is carried out
The jack of axle power loading, but the jack that the vertical bracing members are carried out with axle power loading is not installed；The purpose is to applying
During the load in single direction, because the support constraint in another direction is not yet formed, support system overall deformation shows as support
The compression of body, therefore be not in additional bending moment；
S1.2：The control centre synchronizes regulation and control to the corresponding jack of all Horizontal steelwork bracings, to all
The Horizontal steelwork bracing carries out axle power loading simultaneously；
S1.3：The jack that the vertical bracing members are carried out with axle power loading is installed；
S1.4：The control centre synchronizes regulation and control to the corresponding jack of all vertical bracing members, to all
The vertical bracing members carry out axle power loading simultaneously.
Further, the S1.2 is specifically included：The corresponding jack of all Horizontal steelwork bracings is accessed in the first pumping plant,
Using control centre by all jack in first pumping plant synchronously first group of driving, the Horizontal steelwork bracing is carried out
Prestressing force is loaded；
The S1.4 is specifically included：The corresponding jack of all vertical bracing members is accessed in the second pumping plant, using control
Centrally through all jack in second pumping plant synchronously second group of driving, prestressing force is carried out to the vertical bracing members and added
Carry.
Wherein, the control centre is computer automatic control system, and the computer automatic control system is controlled by PLC
Make first pumping plant or second pumping plant drives the work of the jack.
Further, the S1 is specifically included：It is simultaneously right from the two ends of bracing members when carrying out axle power loading to bracing members
Bracing members carry out axle power loading.By using above-mentioned technical proposal, when carrying out axle power loading to bracing members, due to from bracing members
Two ends simultaneously bracing members are loaded, then its compression is compared situation about only being loaded from bracing members one end and reduced
The axial crushing deformation that half, i.e. bracing members are produced when two ends are loaded simultaneously is Δ L=NL/ (2EI), and is only carried out from one end
The axial crushing deformation that loading is produced is Δ L=NL/EI).So, it can reduce to a certain extent to perpendicular direction
The additional bending moment of bracing members, so that the additional stress that the bracing members for reducing vertical direction are produced to the bracing members of subsequent load, drop
Low bearing stress, shortens construction period.
Further, the S1 is specifically included：One jack, control centre's control are respectively set at the two ends of bracing members
Two jack of system carry out axle power loading to bracing members simultaneously.It may occur to persons skilled in the art that, in the present case
It is not limited solely to using jack as axle power loading tool, other instruments can add such as hydraulic jack as axle power
The instrument of load is applied in the utility model, it will be understood that the selection of this instrument also belongs to protection model of the present utility model
Enclose.
Further, the S1 is specifically included：One jack is set in the middle part of bracing members, using described very heavy
Jacking row axle power is loaded.When setting jack in middle part, it is only necessary to which a jack is that previous embodiment can be achieved
In the effect of axle power loading is carried out using two jack at bracing members two ends, can effectively reduce the quantity of jack, reach
To cost-effective purpose.
Further, the S5 is specifically included：When the corresponding jack of any one bracing members extension elongation with it is described
When basis displacement is unequal, control centre's control is adjusted with the corresponding jack of all bracing members in group, is made same
The extension elongation of all jack in group is equal to the basis displacement.
Further, the dynamic regulation system also includes PTO, the PTO and described thousand
The connection of jin top, power is provided to the jack；The control centre is connected with the PTO, controls the power
The power output of output device.
Further, the PTO is electrohydraulic dynamic device, and the electrohydraulic dynamic device includes proportional overflow
Valve, the control centre is connected with the proportional pressure control valve, controls the work of the proportional pressure control valve, and the S1 includes：It is described
Control centre controls the proportional pressure control valve, makes its regulation to setting pressure, the PTO is defeated to the jack
Go out power.
Further, the S1 is specifically included：
Bracing members in the two-way steel support structure are grouped, the control centre controls the power output dress
Put, adjust its power output, the PTO is given with all jack output power in group；
The bracing members in same group are carried out with axle power loading, loading according to setting shaft force value with all jack in group
During completion, the extension elongation of the jack measured is transferred in the control by institute's displacement sensors as basis displacement
The heart.
It is described according to the deviation between the extension elongation of jack and the basis displacement in above-mentioned adjusting method
S5 specifically includes a variety of situations：
The first situation is：When the jack extension elongation is more than the basis displacement, the jack is in setting shaft
Its extension elongation is adjusted under force value, when the extension elongation is foreshortened to equal to the basis displacement, is now done directly
Regulate and control step, it is ensured that the axle power of bracing members and displacement are in setting range.
Second of situation be：When the extension elongation of the jack is more than the basis displacement, the jack is in setting
Can not shorten under axle power value its extension elongation make the extension elongation be equal to the basis displacement when, show that axle power value now is inclined
Greatly, at this time, it may be necessary to which the jack pair bracing members carry out axle power off-load, and its extension elongation is adjusted, makes stretching for the jack
Go out length equal to the basis displacement, complete regulation and control.Meanwhile, axle of the pressure sensor by now jack after off-load
Force value is transferred to the control centre as new setting shaft force value, after during real-time monitoring, when jack stretches out
When length changes again, the extension elongation to oil cylinder under new setting shaft force value is adjusted.
Preferably, when above-mentioned jack pair bracing members carry out axle power off-load, the side of stepping off-load can be used
During formula, i.e. jack first time off-load, the axle power value (such as every time reduce 5 tons) that off-load is fixed is adjusted after the completion of first time off-load
It is whole to shorten the extension elongation of jack, if being still unable to reach makes extension elongation be equal to basis displacement, then subtracted for the second time
Carry, the extension elongation of jack is adjusted again after the completion of second of off-load, if being still unable to reach makes extension elongation be equal to benchmark position
Move, then carry out third time off-load and adjustment, so pass through stepping off-load and adjustment for several times, until the extension elongation of the jack
Foreshorten to equal to the basis displacement, now then complete regulation and control.
The third situation is：When the jack extension elongation is less than the basis displacement, the jack is in setting
Its extension elongation is adjusted under axle power value, it is now directly complete when the extension elongation is extended to equal to the basis displacement
Into regulation and control step, it is ensured that the axle power of bracing members and displacement are in setting range.
4th kind of situation be：When the extension elongation of the jack is being set less than the basis displacement, but the jack
Can not be adjusted under dead axle force value its extension elongation make the extension elongation be equal to the basis displacement when, show axle power value now
It is less than normal, at this time, it may be necessary to which the jack pair bracing members carry out axle power loading, and its extension elongation is adjusted, make the jack
Extension elongation is equal to the basis displacement, completes regulation and control.Meanwhile, the pressure sensor is by now jack after off-load
Axle power value is transferred to the control centre as new setting shaft force value, after during real-time monitoring, when jack is stretched
When going out length and changing again, the extension elongation to oil cylinder under new setting shaft force value is adjusted.
It is similar with above-mentioned stepping off-load, as preferred, when the jack pair bracing members carry out axle power loading, equally
Can be by the way of stepping loading, jack loads fixed axle power value every time, and adjusts its extension elongation, by walking for several times
Enter loading and adjust, until the extension elongation of the jack is foreshortened to equal to the basis displacement, now then complete regulation and control.
5th kind of situation be：When the extension elongation of the jack is being set less than the basis displacement, but the jack
When can not adjust extension elongation under dead axle force value and reaching equal to the basis displacement, show that axle power value now is less than normal, this
When, it is necessary to described in jack pair bracing members carry out axle power loading, the jack is by way of stepping is loaded to the steel branch
Support carries out axle power loading, but when the axle power value that the jack is loaded is equal to the maximum internal stress of itself unstability of the bracing members
When, now, the extension elongation of the jack still can not be made to be equal to the basis displacement, now, axle power should be stopped and added
Carry, prevent bracing members itself unstability.Based on regulation and control afterwards should switch to regulate and control with axle power, now, the pressure sensor will
The axle power value of jack loading is transferred to the control centre as axle power higher limit, is regulated and controled using this axle power higher limit as axle power
Desired value.The jack carries out axle power loading by way of stepping is loaded to bracing members, is loaded when the jack
When axle power value is equal to the maximum internal stress of bracing members itself unstability, the jack stops axle power loading, the pressure sensor
The axle power value of now jack is transferred to the control centre as axle power higher limit, adjusted using this axle power higher limit as axle power
The desired value of control.
Further, in above-mentioned 5th kind of situation, the adjusting method also includes：
S6：The pressure sensor monitors the axle power value of the jack loading in real time, and real-time axle power value is transferred to
The control centre；
S7：The real-time axle power value and the axle power higher limit are compared for the control centre；
S8：When the real-time axle power value and the axle power higher limit are unequal, the control centre controls the power
Output device exports power to the jack, and the jack adjusts the axle power value of its loading, makes described real-time axle power value etc.
In the axle power higher limit.The regulation and control step of the S6-S8 be with axle power regulate and control based on regulation and control method.
The dynamic regulation system for the two-way steel support structure that the utility model is provided, on the one hand using Flexible Node, makes water
Flat support is not directly contacted with vertical support, and when loading axle power to horizontal support, the compression that horizontal support is produced will not
Directly act on the vertical support being connected with internal box so that the lateral displacement of vertical support is greatly reduced, thus effectively
Reduce the additional bending moment produced during the loading of horizontal support axle power to vertical support, improve the stress of whole two-way steel support structure
Situation；On the other hand, axle power loading tool is controlled by control centre, the real-time monitoring to bracing members axle power can be achieved, prevents
Because external environment change causes the stress of the two-way steel support structure loaded to change.The regulation and control side that the utility model is provided
Method can realize the real-time monitoring to two-way steel axial force of the supports and displacement under various different operating modes, be base pit engineering temporary steel branch
Supporting system provides safer guarantee.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the utility model scope
Calmly, the those of ordinary skill in the utility model field does according to the disclosure above content any change, modification, belonging to right will
Seek the protection domain of book.
Claims (8)
1. a kind of dynamic regulation system of two-way steel support structure, it is characterised in that loaded including two-way steel support structure, axle power
Instrument and control centre；
The two-way steel support structure includes mutually perpendicular horizontal support and vertical support and is arranged at the horizontal support
With the Flexible Node of the vertical support junction；
The Flexible Node includes outer case, internal box, the first connection component and the second connection component, and the outer case is hollow
Structure, its surface offers coaxial the first hole and the second hole, and the internal box is arranged inside the outer case；
First connection component and second connection component are each passed through first hole and second hole and institute
State internal box connection；
Set and have elastic component between the outer wall of the internal box and the inwall of the outer case；
The horizontal support is connected with the outer case, the vertical support respectively with first connection component and described second
Connection component is connected；
The axle power loading tool carries out axle power loading to the horizontal support or the vertical support；
The control centre controls the working condition of the axle power loading tool.
2. a kind of dynamic regulation system of two-way steel support structure according to claim 1, it is characterised in that the outer container
Body and internal box are cube；
Four faces of the outer case and horizontal plane are respectively the first face and the second face being parallel to each other, be parallel to each other
Coaxial the first hole and the second hole is offered respectively on three faces and fourth face, first face and the second face.
3. a kind of dynamic regulation system of two-way steel support structure according to claim 2, it is characterised in that the interior case
Two faces of body and plane-parallel are fixed with sliding part, and the sliding part is contacted with the inwall of the outer case.
4. a kind of dynamic regulation system of two-way steel support structure according to claim 2, it is characterised in that the flexibility
Node also includes the 3rd connection component and the 4th connection component,
First connection component runs through first hole, and its one end is connected with the internal box, the other end for it is described
Vertical support is connected；
Second connection component runs through second hole, and its one end is connected with the internal box, the other end for it is described
Vertical support is connected；
Described 3rd connection component one end is connected with the 3rd face of the outer case, and the other end is used to connect with the horizontal support
Connect；
Described 4th connection component one end is connected with the fourth face of the outer case, and the other end is used to connect with the horizontal support
Connect.
5. the dynamic regulation system of a kind of two-way steel support structure according to claim 4, it is characterised in that described first
Connection component and second connection component are welded or are integrally formed with the internal box；
3rd connection component and the 4th connection component are welded or are integrally formed with the outer case.
6. the dynamic regulation system of a kind of two-way steel support structure according to claim 4, it is characterised in that described first
Connection component includes head rod and first flange, and the second connection component includes the second connecting rod and second flange, and the 3rd connects
Connected components include the 3rd connecting rod and the 3rd flange, and the 4th connection component includes the 4th connecting rod and the 4th flange,
The head rod runs through first hole, and its one end is connected with the internal box, the other end and first method
Orchid connection, the first flange is used to be connected with the vertical support；
Second connecting rod runs through second hole, and its one end is connected with the internal box, the other end and second method
Orchid connection, the second flange is used to be connected with the vertical support；
Described 3rd connecting rod one end is connected with the 3rd face of the outer case, and the other end is connected with the 3rd flange, described
3rd flange is used to be connected with the horizontal support；
Described 4th connecting rod one end is connected with the fourth face of the outer case, and the other end is connected with the 4th flange, described
4th flange is used to be connected with the horizontal support.
7. a kind of dynamic regulation system of two-way steel support structure according to claim any one of 1-6, it is characterised in that
The flexible member is disk spring.
8. a kind of dynamic regulation system of two-way steel support structure according to claim any one of 1-6, it is characterised in that
The axle power loading tool is jack, and the jack is provided with pressure sensor and displacement transducer,
The pressure sensor is used for the axle power for determining the jack loading, and institute's displacement sensors are used to determine described very heavy
Push up the length stretched out；
The control centre receives the data that the pressure sensor and institute's displacement sensors are determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621216419.1U CN206570817U (en) | 2016-11-11 | 2016-11-11 | A kind of dynamic regulation system of two-way steel support structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621216419.1U CN206570817U (en) | 2016-11-11 | 2016-11-11 | A kind of dynamic regulation system of two-way steel support structure |
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| CN206570817U true CN206570817U (en) | 2017-10-20 |
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ID=60063353
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621216419.1U Withdrawn - After Issue CN206570817U (en) | 2016-11-11 | 2016-11-11 | A kind of dynamic regulation system of two-way steel support structure |
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| CN (1) | CN206570817U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638614A (en) * | 2016-11-11 | 2017-05-10 | 上海市机械施工集团有限公司 | Dynamic regulation and control system and method for bidirectional steel supporting structure |
| CN109853577A (en) * | 2018-12-25 | 2019-06-07 | 青岛理工大学 | Method for applying prestress on steel support of deep foundation pit in online control mode |
-
2016
- 2016-11-11 CN CN201621216419.1U patent/CN206570817U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638614A (en) * | 2016-11-11 | 2017-05-10 | 上海市机械施工集团有限公司 | Dynamic regulation and control system and method for bidirectional steel supporting structure |
| CN106638614B (en) * | 2016-11-11 | 2019-01-18 | 上海市机械施工集团有限公司 | A kind of the dynamic regulation system and dynamic regulation method of two-way steel support structure |
| CN109853577A (en) * | 2018-12-25 | 2019-06-07 | 青岛理工大学 | Method for applying prestress on steel support of deep foundation pit in online control mode |
| CN109853577B (en) * | 2018-12-25 | 2019-10-25 | 青岛理工大学 | Method for applying prestress on steel support of deep foundation pit in online control mode |
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