CN109898517A - A kind of deep pit support support system and construction method - Google Patents
A kind of deep pit support support system and construction method Download PDFInfo
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- CN109898517A CN109898517A CN201910187345.5A CN201910187345A CN109898517A CN 109898517 A CN109898517 A CN 109898517A CN 201910187345 A CN201910187345 A CN 201910187345A CN 109898517 A CN109898517 A CN 109898517A
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Abstract
The invention discloses a kind of deep pit support support system and construction methods, including the crown beam being fixed at the top of two metope of foundation pit, it further include two lifting brackets and multiple groups support device, two lifting brackets are separately fixed in two crown beams, every group of support device includes supporting beam and two discharging mechanisms, supporting beam is horizontally set between two metopes of foundation pit, and two discharging mechanisms are separately fixed on two lifting brackets, and for controlling lifting of the supporting beam in foundation pit；Advantage is install convenient, the activity duration is reduced, utilization rate of equipment and installations is high and support is firm.
Description
Technical field
The present invention relates to technical field of rail traffic more particularly to a kind of deep pit support support system and construction methods.
Background technique
With the fast development of rail traffic, deep-foundation pit engineering is also more and more in city, also deeper and deeper.Generally protect
The safety for demonstrate,proving Underground Construction and foundation pit surrounding environment, can be supported foundation pit side-wall and surrounding enviroment, to prevent foundation pit
Deform excessive or ground settlement, common mode is casting concrete wall first, by foundation pit with separate elsewhere, make owner
Concentrate on the region that concrete walls fence up.
And conventional foundation pit construction is substep stage excavation, after the completion of each layer of soil excavates, is risen and is reseted by large size
It is standby to sling support frame, it is then hung to design position and is installed, apply brace pre axial force after the installation is completed, but above-mentioned applied
The shortcomings that work method, there are following several respects: 1, the installation of support frame is that range estimation positioning is carried out by construction personnel, so that installation
It can usually deviate, design position could be reached by generally requiring repeatedly to debug, and it is very time-consuming, support frame peace is excavated in every layer of soil
Between installing into, foundation pit had up to 8-12 hours without support exposure duration, and there are some potential safety problemss；2, as foundation pit is opened
Being continuously increased for depth is dug, hanging difficulty also will increase dramatically, and usually will appear large scale equipment limited amount, and circulation difficulty is asked
Topic, in addition equipment stage utilization rate is low, can cause unnecessary economic loss；3, it is influenced, can be sent out by the temperature difference, stress relaxation
Raw axial force of the supports loss, with the loss of axial force of the supports, foundation pit deformation increases, Deformation control and foundation pit general safety to foundation pit
It will cause detrimental effect.
Summary of the invention
One of main object of the present invention is to provide a kind of deep pit support support system, and install convenient, activity duration subtract
Less, utilization rate of equipment and installations is high and support is firm.
To achieve the above objectives, the technical solution adopted by the present invention are as follows: a kind of deep pit support support system, including fixed setting
Crown beam at the top of two metope of foundation pit further includes two lifting brackets and multiple groups support device, lifting bracket described in two point
In crown beam described in not being fixed on two, support device described in every group includes supporting beam and two discharging mechanisms, the branch
Support beam is horizontally set between two metopes of foundation pit, discharging mechanism described in two be separately fixed at two described on lifting bracket,
And for controlling lifting of the supporting beam in foundation pit.
The discharging mechanism include winch support, hanger rope, reel, for driving the hydraulic of the spool turns
Motor, every one end of the supporting beam is equipped with prepackage cuffs, is rotatably provided with pulley in the prepackage cuffs, described
Winch support be fixed on the lifting bracket, the reel is rotatably provided on the winch support, described
One end of hanger rope be fixed on the reel, the other end of the hanger rope is described around being fixed on after the pulley
It lifts by crane on bracket.
Multiple winch supports are stepped to be distributed on the lifting bracket.
The prepackage cuffs includes the first cuffs and the second cuffs, first cuffs and second cuffs with
Dismountable mode connects, and forms one between the two for fastening the installation space of the supporting beam.
Every one end of the supporting beam is respectively arranged with axle power compensation device.
One end of the supporting beam is equipped with angular transducer, and the discharging mechanism further includes described for controlling
The controller of hydraulic motor rotation, the angular transducer are electrically connected with the controller.
The deep pit support support system further include earth station and for monitor internal support of foundation pit beam installation situation nobody
Machine, the status information in foundation pit is passed to the earth station by wireless transport module by the unmanned plane in real time, described
Earth station be electrically connected with the controller.
It is a further object to provide a kind of methods for carrying out foundation pit construction using deep pit support support system, including
Following steps:
S1: according to design requirement, the aggregate depth angle value H of excavation pit, the total quantity n for the supporting beam for needing to place, every is determined
The cutting depth of one layer of soil layer and the Support Position point of each layer of soil layer；
S2: installing crown beam at the top of two metope of foundation pit respectively, and casting concrete supports between two crown beams, has poured
Bi Hou, installation lifting bracket and discharging mechanism in each crown beam, after installation is in place, carries out soil layer excavation；
S3: after the predetermined cutting depth for digging first layer soil layer, stop excavating；
S4: supporting beam is hung in the soil layer of excavation with crane；
S5: starting hydraulic motor, reel transfer hanger rope, and hanger rope is made to pass through the pulley in the prepackage cuffs of the every one end of supporting beam
After be fixed on lifting bracket, crane slowly unloads supporting beam, while reel slowly tightens hanger rope, until crane and supporting beam point
From and then to the horizontal school position of supporting beam progress；
S6: enabling the axle power compensation device in supporting beam, until the supporting beam withstands the two sides of excavation soil layer；
S7: the quantity n for excavating the supporting beam that soil layer can be placed at present is calculated1If n1> n, then by crane by remaining
Supporting beam be hung to the clear position above the excavation soil layer Support Position point；If n1< n then continues to excavate soil layer, until
All supporting beams are respectively positioned in soil layer, and the Support Position point for having a supporting beam to be located at the soil layer in each layer of soil layer,
The preparation in library is built in completion；
S8: continuing to excavate soil layer, if thering is extra supporting beam to be located at clear position in upper one layer of excavation soil layer,
The supporting beam is moved to the new Support Position point for excavating soil layer by hanger rope, then repeats step S6；If upper one layer opens
An only supporting beam is located at Support Position point in shoveling layer, then is moved to the extra supporting beam nearest apart from upper one layer of soil layer
At the position for excavating the Support Position point of soil layer next to upper one layer, the subsequent extra supporting beam is applied by axle power compensation device
Axle power, the supporting beam positioned at Support Position point then synchronizes unloading axle power, and after completion of discharge, the supporting beam positioned at Support Position point is moved
It moves to the new Support Position point for excavating soil layer, repeats step S6, former extra supporting beam is then unloaded again mobile supreme one after axle power
The Support Position point of layer soil layer, repeats step S6；
S9: if the depth excavated reaches aggregate depth angle value H, stop excavating；If reaching aggregate depth angle value H,
Step S8 is repeated, until the depth of excavation reaches aggregate depth angle value H.
The quantity n for the supporting beam that spoil layer can be placed is calculated in step S71Calculation formula beWherein
n1For downward round numbers, h is the depth for excavating soil layer, and L is the depth of Support Position point, and d is the diameter of supporting beam.
Compared with the prior art, the advantages of the present invention are as follows: by the way that lifting bracket is arranged in crown beam, it is conducive to lifting bracket
Fixation；Multiple supporting beams are distributed along the short transverse of foundation pit, play the role of support to the metope of foundation pit, foundation pit is avoided to collapse
Deformation；The lifting device being arranged in each lifting bracket is used to be promoted one end of supporting beam, can adjust constantly to supporting beam
Section, it is more convenient to operate；The setting of axle power compensation device applies axle power to supporting beam, its firm support is made to live foundation pit；The present invention
Install convenient, activity duration are reduced, utilization rate of equipment and installations is high and support is firm.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention；
Fig. 2 is the schematic perspective view that bracket is lifted by crane in the present invention；
Fig. 3 is the schematic perspective view that cuffs is pre-installed in the present invention；
Fig. 4 is the schematic perspective view of axis force compensating device of the present invention；
Fig. 5 is the forward viewing portion structural schematic diagram that axis force compensating device of the present invention removes part enclosure body；
Fig. 6 is the backsight partial structure diagram that axle power compensation device of the present invention removes part enclosure body；
Fig. 7 is the structural schematic diagram that hydraulic station and jack are cooperatively connected in the present invention；
Fig. 8 is the structural schematic diagram that ejecting mechanism and roof supporting are cooperatively connected in the present invention；
Fig. 9 is the structural schematic diagram that locking mechanism is removed in Fig. 8；
Figure 10 is the schematic cross-sectional view that support component and roof supporting are cooperatively connected in the present invention；
Figure 11 is that locking mechanism is fitted to the structural schematic diagram on jack in the present invention；
Figure 12 is the broken section structural schematic diagram of jack in the present invention；
Figure 13 is the schematic perspective view of hydraulic station in the present invention；
Figure 14 is the schematic cross-sectional view of hydraulic station in the present invention；
Figure 15 is that locking mechanism cooperates jack and roof supporting in initial, the non-lock-bit of ejection and ejection in the present invention
Schematic cross-sectional view under three states of lock-bit；
Figure 16 is the schematic diagram of control system in the present invention.
Figure 17 is controller and functional block diagram when angular transducer, earth station's cooperation in the present invention.
Specific embodiment
Invention is described in further detail below in conjunction with figure embodiment.
Embodiment one: as shown, a kind of deep pit support support system, including the hat being fixed at the top of two metope of foundation pit
Beam 10, further includes two lifting brackets 20 and multiple groups support device 30, and two lifting brackets 20 are separately fixed at two crown beams 10
On, every group of support device 30 includes supporting beam 301 and two discharging mechanisms 302, supporting beam 301 be horizontally set with foundation pit two metopes it
Between, two discharging mechanisms 302 are separately fixed on two lifting brackets 20, and for controlling liter of the supporting beam 301 in foundation pit
Drop.
In this particular embodiment, each discharging mechanism 302 includes winch support 303, hanger rope 304, reel 305, is used for
The hydraulic motor 306 for driving reel 305 to rotate, every one end of supporting beam 301 are equipped with prepackage cuffs 40, and pre-installing can in cuffs 40
Rotation is provided with pulley 401, and winch support 303 is fixed on lifting bracket 20, and reel 305 is rotatably provided in winch support
On 303, one end of hanger rope 304 is fixed on reel 305, and the other end of hanger rope 304 holds in the palm around lifting is fixed on after pulley 401
On frame 20.
In this particular embodiment, multiple winch supports 303 are stepped is distributed on lifting bracket 20.
In this particular embodiment, prepackage cuffs 40 includes the first cuffs 402 and the second cuffs 403, the first cuffs 402 with
Second cuffs 403 removably connects, and forms an installation space 404 for being used for fastening support beam 301 between the two.
One end of supporting beam 301 is equipped with angular transducer 50, and discharging mechanism 302 further includes for controlling hydraulic motor
The controller 307 of 306 rotations, angular transducer 50 are electrically connected with controller 307.
Deep pit support support system further includes earth station 70 and the unmanned plane for monitoring 301 installation situation of internal support of foundation pit beam
60, the status information in foundation pit is passed to earth station 70, earth station 70 and control in real time by wireless transport module by unmanned plane 60
Device 307 processed is electrically connected.
Embodiment two: as shown, a kind of deep pit support support system, including the hat being fixed at the top of two metope of foundation pit
Beam 10, further includes two lifting brackets 20 and multiple groups support device 30, and two lifting brackets 20 are separately fixed at two crown beams 10
On, every group of support device 30 includes supporting beam 301 and two discharging mechanisms 302, supporting beam 301 be horizontally set with foundation pit two metopes it
Between, two discharging mechanisms 302 are separately fixed on two lifting brackets 20, and for controlling liter of the supporting beam 301 in foundation pit
Drop.
In this particular embodiment, each discharging mechanism 302 includes winch support 303, hanger rope 304, reel 305, is used for
The hydraulic motor 306 for driving reel 305 to rotate, every one end of supporting beam 301 are equipped with prepackage cuffs 40, and pre-installing can in cuffs 40
Rotation is provided with pulley 401, and winch support 303 is fixed on lifting bracket 20, and reel 305 is rotatably provided in winch support
On 303, one end of hanger rope 304 is fixed on reel 305, and the other end of hanger rope 304 holds in the palm around lifting is fixed on after pulley 401
On frame 20.
In this particular embodiment, multiple winch supports 303 are stepped is distributed on lifting bracket 20.
In this particular embodiment, prepackage cuffs 40 includes the first cuffs 402 and the second cuffs 403, the first cuffs 402 with
Second cuffs 403 removably connects, and forms an installation space 404 for being used for fastening support beam 301 between the two.
In this particular embodiment, every one end of supporting beam 301 is respectively arranged with axle power compensation device, axle power compensation device
Including outer housing 1 and roof supporting 2, roof supporting 2 is vertically provided at one of outside portion of outer housing 1, sets in outer housing 1
It is equipped with ejecting mechanism, power mechanism and control system, ejecting mechanism is used to that roof supporting 2 to be made to eject the metope for resisting foundation pit, moves
Force mechanisms are used to provide power to ejecting mechanism, and control system is additionally provided with use in outer housing 1 for controlling power mechanism movement
In the first displacement sensor 3 of monitoring 2 ejection position of roof supporting, the first displacement sensor 3 is electrically connected to the control system, shell
Another outside portion of body 1 is equipped with the mounting flange 11 for connecting bracing members., control system is according to the first displacement sensor
3 shift values monitored act to control power mechanism.
In this particular embodiment, control system is that the conventional control circuit used is adapted with sensor, wherein wrapping
Comparator is included, is used to compare the data that sensor is monitored and transmitted, the comparison knot obtained according to comparator by comparator
Fruit exports the control signal started or stoped for controlling power mechanism, so that power mechanism be driven to make corresponding movement.
In this particular embodiment, power mechanism is hydraulic station 4, and hydraulic station 4 is electrically connected to the control system, ejecting mechanism packet
Jack 5 is included, oil inlet 501 and oil outlet 502 are provided on the jack, oil inlet 501 and oil outlet 502 are distinguished
It is connected by oil pipe 45 with hydraulic station 4, jack 5 includes cylinder barrel 51, and cylinder barrel 51 is fixedly mounted in outer housing 1, cylinder barrel 51
Interior to be provided with to fore-aft travel piston rod 52, one end of piston rod 52 is stretched out cylinder barrel 51 and is fixedly connected with roof supporting 2.Pass through
Hydraulic station 4 gives 5 fuel feeding of jack, and jack 5 provides ejecting force to roof supporting 2, and structure is simple, easy to operate, at low cost.
In this particular embodiment, the support machine for sharing the support force that jack 5 is born is provided in outer housing 1
Structure, supporting mechanism include the support component for being symmetricly set on 5 both sides of jack, and support component includes horizontally disposed support shaft
53, one end of support shaft 53 is stretched out outer housing 1 and is fixedly connected with the inner side end of roof supporting 2, is provided in support shaft 53
First straight line bearing 54, first straight line bearing 54 are mounted on bearing block 55, and bearing block 55 is fixedly mounted in outer housing 1.On
It is simple to state supporting mechanism structure, it is at low cost, by the cooperation of support shaft 53 and first straight line bearing 54, realize support shaft 53 right
Roof supporting 2 can be as roof supporting 2 moves together while playing a supporting role, while playing to the movement of roof supporting 2
Guiding role, two pairs of support components arranged symmetrically of jack 5, so that stress equalization, it is ensured that stablizing for entire mechanism uses.
In this particular embodiment, lifting block 21 is fixedly installed in the back end surface of roof supporting 2, support shaft 53 is stretched out
One end of outer housing 1 is equipped with a lifting bolt 531, and support shaft 53 is located at the top of lifting block 21, lifts and is provided on block 21
The vertical installation screw (not shown) matched with lifting bolt 531, lifting bolt 531 pass through the vertical spiral shell of installation screw
It connects on lifting block 21.Connection structure between above-mentioned support shaft 53 and roof supporting 2 is simple, at low cost, easy for installation, hanging ring
There are suitable gaps after bolt 531 and support shaft 53 are installed, and roof supporting 2 is allowed to have certain circumferencial direction pendulum
It is dynamic.
In this particular embodiment, the lock-bit machine for the Support Position of lock support top plate 2 is provided on jack 5
Structure.The Support Position of roof supporting 2 can be enable to lock by locking mechanism, to avoid roof supporting 2 under external force
It bounces back, so as to cause the generation of accident, improves whole safety in utilization.
In this particular embodiment, locking mechanism includes motor 6, the first lock-bit gear 61 and the second lock-bit gear 62, and
One lock-bit gear 61 is coaxially mounted on the output shaft of motor 6, and the second lock-bit gear 62 engages connection with the first lock-bit gear 61,
Second lock-bit gear 62, which is coaxially spirally connected, to be mounted on piston rod 52, and the second lock-bit gear 62 is located at outside cylinder barrel 51, on cylinder barrel 51
It is provided with the mounting rack for installing motor 6, motor 6 is movably disposed on mounting rack, the activity direction of motor 6 and support
The direction of motion of top plate 2 is consistent, and motor 6 is electrically connected to the control system.Above-mentioned locking mechanism structure is simple, and lock-bit is easy to operate；
Under original state, the inner side end of the second lock-bit gear 62 is bonded with the lateral wall of cylinder barrel 51 substantially, when specifically used, passes through liquid
5 fuel feeding of jack is given at pressure station 4, and ejection drives the roof supporting 2 being attached thereto to eject outward to the piston rod 52 of jack 5 outward,
Since the first lock-bit gear 61 engages connection with the second lock-bit gear 62, the second lock-bit gear 62 piston rod 52 drive similarly hereinafter
Step is displaced outwardly, and after ejecting in place, 4 fuel cut-off of hydraulic station simultaneously enters pressure maintaining mode, and the second lock-bit gear 62 is interior at this time
Lateral wall of the side end face far from cylinder barrel 51, motor 6 are started to work, and the rotation of the first lock-bit gear 61 are driven, with mutually nibbling therewith
The the second lock-bit gear 62 closed rotates, since the second lock-bit gear 62 is screwed on piston rod 52, the second lock-bit tooth
Wheel 62 is moved along piston rod 52 to the opposite direction that piston rod 52 ejects direction during rotationally, when the second lock-bit gear
62 when being returned to initial, set position, and motor 6 stops working, and lock-bit is completed at this time, and cylinder barrel 51 provides a position-limiting action, this
When even there are other external forces to be also difficult to that roof supporting 2 is made to bounce back.
In this particular embodiment, mounting rack includes a horizontally disposed mounting plate 71, and one end of mounting plate 71 is connected with
The support plate 72 perpendicular with mounting plate 71, the lower end of support plate 72 are fixedly mounted on cylinder barrel 51, and the upper end of support plate 72 connects
It connects in the side of mounting plate 71, motor 6 can be arranged on mounting plate 71 with moving with 2 direction of motion of roof supporting.Support plate
72 for making mounting rack 7 be stably mounted to cylinder barrel 51, and mounting plate 71 is used to provide a supporting role to the installation of motor 6.
In this particular embodiment, two second straight line bearings 711, second straight line bearing are arranged at intervals on mounting plate 71
Guide rod 712 is movably linearly provided on 711, the front end of two guide rods 712 is connected by a connecting plate 713,
713 parallel interval of connecting plate is arranged after roof supporting 2, and motor 6 is mounted on the back end surface of connecting plate 713, the first lock-bit
Gear 61 is mounted on the front end face of connecting plate 713, and the output shaft of motor 6 passes through connecting plate 713 and the first lock-bit gear 61 is solid
Fixed connection.Connecting plate 713, which is used to install, provides a stable installation positioning to the installation of motor 6, passes through second straight line bearing
711 and guide rod 712 cooperation realize motor 6 moved in a straight line together with roof supporting 2, structure is simple, using stabilization, together
When guide rod 712 play and share the support force that the output shaft of motor 6 is born.
In this particular embodiment, the second displacement for monitoring 61 position of the first lock-bit gear is provided on mounting rack 7
Sensor 8, second displacement sensor 8 are electrically connected to the control system.By second displacement sensor 8 for detecting the first lock-bit
The position of gear 61, so that whole system controls safer stabilization.
In this particular embodiment, retractable and flexible shield is provided between 1 side of roof supporting 2 and outer housing
12, one end of flexible boot 12 is fixedly mounted on the side of outer housing 1, and the other end of flexible boot 12 is fixedly mounted on branch
On the inner side end of support plate 2.By flexible boot 12 to piston rod 52, the lock-bit tooth for stretching out outer housing 1 in use process
Wheel and motor 6 play a protective role, and avoid above-mentioned component by the influence of external environmental factor, use the longevity to effectively extend
Life.
In this particular embodiment, for set-up of control system in a control cabinet 9, control cabinet 9 is located at outer housing 1
It is interior.By control cabinet 9 to installation one stable installation positioning of control system, while controlling cabinet 9 and can be used for control
System forms protection, it is ensured that the safety and stability used.
In this particular embodiment, the quick coupling 13 conducted for realizing control system is provided on outer housing 1,
The quick coupling 13 is electrically connected to the control system, and is connected by the quick coupling 13 and external power supply, is realized the electricity of control system
Conducting.
In this particular embodiment, hydraulic station 4 includes hydraulic oil container 41, and high-pressure plunger oil is provided in hydraulic oil container 41
42 are pumped, is provided with oil path block 43 on hydraulic oil container 41, passes through 44 phase of connected pipes between high-pressure plunger oil pump 42 and oil path block 43
It connects, a driving motor 46 is provided on hydraulic oil container 41, the output shaft and high-pressure plunger oil pump 42 of driving motor 46 are fixed to be connected
It connects, hydraulic oil output port 431 and hydraulic oil oil return opening 432 is provided on oil path block 43, hydraulic oil output port 431 passes through oil pipe
45 are connected with oil inlet 501, and hydraulic oil oil return opening 432 is connected by oil pipe 45 with oil outlet 502, are arranged on oil path block 43
Have for the relief valve 47 of pressure release and the solenoid directional control valve 48 for controlling 4 oil inlet of hydraulic station or oil return, is arranged on oil path block 43
There is the pressure sensor 49 of the output oil pressure for monitoring hydraulic oil output port 431, pressure sensor 49 is electrically connected with control system
It connects.Above-mentioned hydraulic station structure is simple, by pressure sensor 49 for monitoring on oil path block 43 on hydraulic oil output port 431
Output oil pressure sends the pressure value monitored to control system, and control system receives the confession of pressure value control hydraulic station 4
Oil or pressure release, to realize the ejection or pressure maintaining support of roof supporting 2, structure is simple, uses stabilization.
In this particular embodiment, control system includes that data reception module, data comparison module and action command are sent
Module, the data reception module are used to receive the shift value and pressure value that displacement sensor and pressure sensor monitoring arrive,
And shift value and pressure value are sent to data comparison module, data comparison module is used to indicate power according to comparison result output
Mechanism and electric motor starting or the action command signal of stopping, and hydraulic station 4 and electricity are used to indicate by action command sending module
Machine 6 makes corresponding movement.
In above structure, the ejection support of roof supporting 2 can not only rely on Bit andits control, while can control by pressure,
Concrete operating principle are as follows: by the pressure data on hydraulic station 4 on 49 real-time monitoring hydraulic oil output port 431 of pressure sensor,
The pressure data is fed back into control system, is made comparisons with the pressure data values set in control system；If the pressure monitored
Data are less than the setting value, and control system control driving motor 46 rotates, and high-pressure plunger oil pump 42 is in driving motor 46
Lower start-up operation is driven, hydraulic oil in hydraulic oil container 41 is transmitted to oil path block 43, the relief valve of control system control at this time is to close
Closed state, the valve port being connected on solenoid directional control valve 48 with hydraulic oil output port 431 are in an open state, and give 5 fuel feeding of jack,
The pressure value for setting the pressure rise of jack 5 into control system, when pressure sensor 49 monitors that pressure value reaches again
To after design value, control system controls 4 fuel cut-off of hydraulic station, i.e. driving motor 46 stops operating, and enters pressure maintaining mode, pressure
49 monitoring pressure in real time data of force snesor, are real-time transmitted to control system, when the pressure data monitored is greater than setting
When value, control system controls 4 pressure release of hydraulic station, i.e. relief valve 47 is opened, on solenoid directional control valve 48 with 432 phase of hydraulic oil oil return opening
The valve port of connection is in an open state, the hydraulic oil oil return in jack 5, makes the pressure reduction of jack 5 to setup pressure value,
After pressure value reaches design value again, control system controls hydraulic station 4 and stops pressure release and enter pressure maintaining mode.Pressure is adjusted again
After whole, the position of the inner side end and the lateral wall of cylinder barrel 51 of the second lock-bit gear 62 changes, second displacement sensor 8
The position data of the first lock-bit gear 61 monitored is fed back into control system, is carried out with the preset value set in control system
Comparison, control system driving motor 6 rotate, and drive the second lock-bit gear 62 to synchronize and rotate, and during rotation
It is moved along piston rod 52 to 52 axial direction of piston rod, when second displacement sensor 8 monitors that the first lock-bit gear 61 is replied
When to the position of preset value defined, control system control motor 6 stops working, and is finished at this time to the lock-bit of roof supporting 2
At other external forces are difficult to that roof supporting 2 is made to bounce back.When whole device is controlled using pressure, the first displacement sensing
Device 3 is used for the change in location of real-time monitoring roof supporting 2, and sends control system for the change in location situation.
One end of supporting beam 301 is equipped with angular transducer 50, and discharging mechanism 302 further includes for controlling hydraulic motor
The controller 307 of 306 rotations, angular transducer 50 are electrically connected with controller 307.
Deep pit support support system further includes earth station 70 and the unmanned plane for monitoring 301 installation situation of internal support of foundation pit beam
60, the status information in foundation pit is passed to earth station 70, earth station 70 and control in real time by wireless transport module by unmanned plane 60
Device 307 processed is electrically connected.
Example IV: a method of foundation pit construction is carried out using deep pit support support system, is included the following steps:
S1: according to design requirement, the aggregate depth angle value H of excavation pit, the total quantity n for the supporting beam for needing to place, every is determined
The cutting depth of one layer of soil layer and the Support Position point of each layer of soil layer；
S2: installing crown beam at the top of two metope of foundation pit respectively, and casting concrete supports between two crown beams, has poured
Bi Hou, installation lifting bracket and discharging mechanism in each crown beam, after installation is in place, carries out soil layer excavation；
S3: after the predetermined cutting depth for digging first layer soil layer, stop excavating；
S4: supporting beam is hung in the soil layer of excavation with crane；
S5: starting hydraulic motor, reel transfer hanger rope, and hanger rope is made to pass through the pulley in the prepackage cuffs of the every one end of supporting beam
After be fixed on lifting bracket, crane slowly unloads supporting beam, while reel slowly tightens hanger rope, until crane and supporting beam point
From and then to the horizontal school position of supporting beam progress；
S6: enabling the axle power compensation device in supporting beam, until the supporting beam withstands the two sides of excavation soil layer；
S7: the quantity n for excavating the supporting beam that soil layer can be placed at present is calculated1If n1> n, then by crane by remaining
Supporting beam be hung to the clear position above the excavation soil layer Support Position point；If n1< n then continues to excavate soil layer, until
All supporting beams are respectively positioned in soil layer, and the Support Position point for having a supporting beam to be located at the soil layer in each layer of soil layer,
The preparation in library is built in completion；
S8: continuing to excavate soil layer, if thering is extra supporting beam to be located at clear position in upper one layer of excavation soil layer,
The supporting beam is moved to the new Support Position point for excavating soil layer by hanger rope, then repeats step S6；If upper one layer opens
An only supporting beam is located at Support Position point in shoveling layer, then is moved to the extra supporting beam nearest apart from upper one layer of soil layer
At the position for excavating the Support Position point of soil layer next to upper one layer, the subsequent extra supporting beam is applied by axle power compensation device
Axle power, the supporting beam positioned at Support Position point then synchronizes unloading axle power, and after completion of discharge, the supporting beam positioned at Support Position point is moved
It moves to the new Support Position point for excavating soil layer, repeats step S6, former extra supporting beam is then unloaded again mobile supreme one after axle power
The Support Position point of layer soil layer, repeats step S6；
S9: if the depth excavated reaches aggregate depth angle value H, stop excavating；If reaching aggregate depth angle value H,
Step S8 is repeated, until the depth of excavation reaches aggregate depth angle value H.
The quantity n for the supporting beam that spoil layer can be placed is calculated in step S71Calculation formula beWherein
n1For downward round numbers, h is the depth for excavating soil layer, and L is the depth of Support Position point, and d is the diameter of supporting beam.
Claims (9)
1. a kind of deep pit support support system, including the crown beam being fixed at the top of two metope of foundation pit, it is characterised in that: further include
Two lifting brackets and multiple groups support device, lifting bracket described in two be separately fixed at two described in crown beam, every group
The support device includes supporting beam and two discharging mechanisms, and the supporting beam is horizontally set between two metopes of foundation pit, and two
A discharging mechanism be separately fixed at two described on lifting bracket, and for controlling the supporting beam in foundation pit
Lifting.
2. a kind of deep pit support support system according to claim 1, it is characterised in that: each the discharging mechanism includes
Winch support, hanger rope, reel, the hydraulic motor for driving the spool turns, every one end installation of the supporting beam
There is prepackage cuffs, pulley is rotatably provided in the prepackage cuffs, the winch support is fixed on the lifting support
On frame, the reel is rotatably provided on the winch support, and one end of the hanger rope is fixed on the reel
On, the other end of the hanger rope is fixed on the lifting bracket after bypassing the pulley.
3. a kind of deep pit support support system according to claim 2, it is characterised in that: multiple winch supports are in rank
Scalariform is distributed on the lifting bracket.
4. a kind of deep pit support support system according to claim 2, it is characterised in that: the prepackage cuffs includes first
Cuffs and the second cuffs, first cuffs is removably connect with second cuffs, and shape between the two
At one for fastening the installation space of the supporting beam.
5. a kind of deep pit support support system according to claim 2, it is characterised in that: every one end of the supporting beam point
It is not provided with axle power compensation device.
6. a kind of deep pit support support system according to claim 2, it is characterised in that: install one end of the supporting beam
Angled sensor, the discharging mechanism further include the controller for controlling the hydraulic motor rotation, the angle
Degree sensor is electrically connected with the controller.
7. a kind of deep pit support support system according to claim 6, it is characterised in that: the deep pit support support system is also
Unmanned plane including earth station and for monitoring internal support of foundation pit beam installation situation, the unmanned plane pass through wireless transport module
Status information in foundation pit is passed to the earth station in real time, the earth station is electrically connected with the controller.
8. a kind of method that the deep pit support support system using described in claim 5 carries out foundation pit construction, which is characterized in that including
Following steps:
S1: according to design requirement, the aggregate depth angle value H of excavation pit, total quantity n, each layer of the supporting beam for needing to place are determined
The Support Position of the cutting depth of soil layer and each layer of soil layer point；
S2: installing crown beam at the top of two metope of foundation pit respectively, and casting concrete supports between two crown beams, pours and finishes
Afterwards, installation lifting bracket and discharging mechanism in each crown beam, after installation is in place, carry out soil layer excavation；
S3: after the predetermined cutting depth for digging first layer soil layer, stop excavating；
S4: supporting beam is hung in the soil layer of excavation with crane；
S5: starting hydraulic motor, reel transfer hanger rope, solid after so that hanger rope is passed through the pulley in the prepackage cuffs of the every one end of supporting beam
It being scheduled on lifting bracket, crane slowly unloads supporting beam, while reel slowly tightens hanger rope, until crane is separated with supporting beam,
And then horizontal school position is carried out to supporting beam；
S6: enabling the axle power compensation device in supporting beam, until the supporting beam withstands the two sides of excavation soil layer；
S7: the quantity n for excavating the supporting beam that soil layer can be placed at present is calculated1If n1> n is then propped up remaining by crane
Support beam is hung to the clear position above the excavation soil layer Support Position point；If n1< n then continues to excavate soil layer, until all
The supporting beam Support Position point that is respectively positioned in soil layer, and there is a supporting beam to be located at the soil layer in each layer of soil layer, complete
Build the preparation in library；
S8: continue excavation soil layer and pass through if thering is extra supporting beam to be located at clear position in upper one layer of excavation soil layer
The supporting beam is moved to the new Support Position point for excavating soil layer by hanger rope, then repeats step S6；If upper one layer of spoil
An only supporting beam is located at Support Position point in layer, then is moved to the extra supporting beam nearest apart from upper one layer of soil layer closely
At the position of the Support Position point of upper one layer of excavation soil layer, the subsequent extra supporting beam applies axis by axle power compensation device
Power, the supporting beam positioned at Support Position point then synchronizes unloading axle power, and after completion of discharge, the supporting beam positioned at Support Position point is mobile
To the new Support Position point for excavating soil layer, step S6 is repeated, former extra supporting beam then unloads after axle power mobile supreme one layer again
The Support Position point of soil layer repeats step S6；
S9: if the depth excavated reaches aggregate depth angle value H, stop excavating；If reaching aggregate depth angle value H, repeat
Step S8, until the depth of excavation reaches aggregate depth angle value H.
9. a kind of method of foundation pit construction according to claim 8, it is characterised in that: calculate spoil layer energy in step S7
The quantity n for the supporting beam enough placed1Calculation formula beWherein n1For downward round numbers, h is the depth for excavating soil layer
Degree, L are the depth of Support Position point, and d is the diameter of supporting beam.
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| CN201910187345.5A CN109898517A (en) | 2019-03-13 | 2019-03-13 | A kind of deep pit support support system and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111074903A (en) * | 2019-12-27 | 2020-04-28 | 中国建筑第八工程局有限公司 | Foundation pit construction method with steel support capable of being turned over |
| CN111677525A (en) * | 2020-05-27 | 2020-09-18 | 浙江新中源建设有限公司 | Inner supporting beam and dismantling method thereof |
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| CN202989935U (en) * | 2013-01-08 | 2013-06-12 | 北京市市政工程设计研究总院 | Simple device for erecting or dismantling steel braces of subway foundation pits |
| CN108217456A (en) * | 2017-12-26 | 2018-06-29 | 同济大学 | A kind of framing type steel box-girder middle cross beam lifts self-level(l)ing device |
| CN108252980A (en) * | 2017-12-25 | 2018-07-06 | 上海建工集团股份有限公司 | A kind of foundation pit deformation Precise control device and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202989935U (en) * | 2013-01-08 | 2013-06-12 | 北京市市政工程设计研究总院 | Simple device for erecting or dismantling steel braces of subway foundation pits |
| CN108252980A (en) * | 2017-12-25 | 2018-07-06 | 上海建工集团股份有限公司 | A kind of foundation pit deformation Precise control device and control method |
| CN108217456A (en) * | 2017-12-26 | 2018-06-29 | 同济大学 | A kind of framing type steel box-girder middle cross beam lifts self-level(l)ing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111074903A (en) * | 2019-12-27 | 2020-04-28 | 中国建筑第八工程局有限公司 | Foundation pit construction method with steel support capable of being turned over |
| CN111074903B (en) * | 2019-12-27 | 2021-08-17 | 中国建筑第八工程局有限公司 | Foundation pit construction method with steel support capable of being turned over |
| CN111677525A (en) * | 2020-05-27 | 2020-09-18 | 浙江新中源建设有限公司 | Inner supporting beam and dismantling method thereof |
| CN111677525B (en) * | 2020-05-27 | 2022-01-18 | 浙江新中源建设有限公司 | Inner supporting beam and dismantling method thereof |
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Application publication date: 20190618 |