CN107907167A - A kind of bridge cable hanging apparatus safety monitoring method and system - Google Patents
A kind of bridge cable hanging apparatus safety monitoring method and system Download PDFInfo
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- CN107907167A CN107907167A CN201810011311.6A CN201810011311A CN107907167A CN 107907167 A CN107907167 A CN 107907167A CN 201810011311 A CN201810011311 A CN 201810011311A CN 107907167 A CN107907167 A CN 107907167A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention discloses a kind of bridge cable hanging apparatus safety monitoring method and system, it is related to bridge construction and monitoring technical field.The system comprises：Monitor terminal and monitoring device, monitoring device include inclinator group, acceleration transducer, cable tension sensor group, wind speed wind direction sensor and Strain Meter Set.The method is realized based on the data processing method being installed on the monitor terminal；The data processing method passes through the analysis and processing result obtained after being analyzed and processed by the Real-time Monitoring Data of each monitoring device directly with pre-set threshold value comparison and/or by Real-time Monitoring Data and pre-set analysis result threshold value comparison, judge that the bridge cable hanging apparatus that each monitoring device is monitored whether there is risk, and send risk prompting message.The present invention is forced into the safety monitoring method of system for hoisting heavy lifting posture, the stress of Sarasota structure, Sarasota main push-towing rope earth anchor, solves the problems, such as construction safety caused by multi-risk System source in cable crane work progress.
Description
Technical field
The present invention relates to field of bridge construction and the safety guarantee monitoring technology for being related to the large-scale temporary structure of bridge construction to lead
Domain, more particularly to a kind of bridge cable hanging apparatus safety monitoring method and system.
Background technology
Erection with cableway is that long-span arch bridge is realized from one of main method of erection construction, applies and compares in orographic condition
Complex environment field, such as there are valley or the section that The water is deep and the current fast, in the smoothly current navigable river for needing to meet ship.Though
Right erection with cableway construction technology oneself through maturation, but as steel pipe arch bridge across footpath increases, the Lifting Capacity of cable crane is limited, cable
Lift-on/lift-off system construction safety problem is increasingly notable.The research direction of existing hoisting technology is hung mainly for large scale structure stand alone type is overall
Construction method, hanging piece lifting attitude control method and more cranes collaboration hanging methods are filled, not on how to realizing
Hoisting with Cableway System safety monitoring and the research of lifting operation environment field monitoring.
The content of the invention
It is an object of the invention to provide a kind of bridge cable hanging apparatus safety monitoring method and system, so as to solve existing
There are foregoing problems present in technology.
To achieve these goals, the safety monitoring system of bridge cable hanging apparatus of the present invention, the bridge cable
Rope hanging apparatus includes Sarasota and main rope is connected with the Sarasota, and the Sarasota includes tower crane and button tower；The system comprises：
Monitor terminal and the monitoring device being connected with the monitor terminal, the monitoring device include inclinator group, acceleration transducer,
Cable tension sensor group, wind speed wind direction sensor and Strain Meter Set；The inclinator group includes being arranged on the inclinator of tower crane, sets
In the inclinator detained the inclinator of tower and be arranged on rib-lifting section；The cable tension sensor group includes being arranged in main rope
Cable tension sensor, the cable tension sensor being arranged on the button cable being connected with tower crane, be arranged on the button cable being connected with button tower
Cable tension sensor and the cable tension sensor that is arranged on the bridge cable hanging apparatus dorsal funciculus；The wind speed wind direction sensor
It is arranged on Sarasota；The acceleration transducer is arranged on rib-lifting section；The Strain Meter Set includes being arranged at earth anchor
Strain gauge and the strain gauge being arranged on Sarasota bottom.
Preferably, the middle of the rib-lifting section sets two-way inclinator, and the middle part of the rib-lifting section sets three-dimensional to add
Velocity sensor；Inclinator is respectively provided with two heel posts of the tower crane tower top, on two heel posts of the button column overhead
It is respectively provided with inclinator；The cable tension sensor set in the main rope is magnetic flux cable tension test sensor.
Safety detection method of the invention based on bridge cable hanging apparatus safety monitoring system, the method are based on installation
Realized in the data processing method on the monitor terminal；
The data processing method, is specifically realized as steps described below：Obtained and the monitor terminal by monitor terminal
Real-time Monitoring Data of each monitoring device of connection during the construction operation that rib-lifting section is lifted, by the prison in real time
Obtained analysis and processing result is surveyed after data are directly analyzed and processed with pre-set threshold value comparison and/or by Real-time Monitoring Data
With pre-set analysis result threshold value comparison, judge that the bridge cable hanging apparatus that each monitoring device is monitored whether there is
Risk, if it is, sending prompting message；If it is not, then continue to judge.
Preferably, the monitoring of the tower-like state of make-up, is specially：Button tower inclination angle is set on two heel posts of button column overhead
Instrument, the state of button tower is judged according to the inclination angle obtained in real time at two button tower inclinators：
The inclination angle of two button tower inclinator monitorings is obtained in real time, and the displacement off normal of button column overhead is obtained according to formula (2)；
Work as θj>=5 ° or max { L1/L2, L2/L1} >=2, button tower are in high risk state during current construction operation,
Stopping construction being sent immediately, and construction personnel withdraws the prompting of danger zone；
As 3 °≤θj5 ° of ＜ or 1≤max { L1/L2, L2/L1＜ 2, detain tower and moderate wind is in during current construction operation
Dangerous state, sends the prompting for asking construction personnel to verify button tower stress；
Work as θj3 ° of ＜ and max { L1/L2, L2/L1＜ 1, the permission state that tower is in during construction operation is detained, does not send report
It is alert；
LjRepresent the displacement off normal of button tower heel post j tower tops, H represents the height of button tower, θjRepresent the j monitorings of button tower inclinator
Inclination angle, j represents the heel post numbering of button tower, j=1 or j=2.
It is highly preferred that the monitoring to tower crane state, is specially：Tower crane inclination angle is set on two heel posts of tower crane tower top
Instrument, the state of tower crane is judged according to the inclination angle obtained in real time at two tower crane inclinators：
The inclination angle of two tower crane inclinator monitorings is obtained in real time, and the displacement off normal of tower crane tower top is obtained according to formula (1)；
Work as θi' >=10 ° or max { L1′/L2', L2′/L1' >=2 when, tower crane during current construction operation in height
Risk status, sends stopping construction immediately, and construction personnel withdraws the prompting of danger zone；
As 5 °≤θi10 ° of ' ＜ or 1≤max { L1′/L2', L2′/L1' ＜ 2 when, tower crane is located during current construction operation
In moderate risk status, the prompting for asking construction personnel to verify tower crane stress is sent；
As 5 ° of θ ' ＜ and max { L1′/L2', L2′/L1' ＜ 1 when, tower crane is in the permission state during construction operation,
Alarm is not sent；
LiThe displacement off normal of ' expression tower crane heel post i tower tops, the height of H ' expression tower cranes, LjRepresent button tower heel post j towers
The displacement off normal on top, θi' representing the inclination angle that tower crane inclinator i is monitored, i represents the heel post numbering of tower crane, i=1 or i=2, j
=1 or j=2.
Preferably, the prison based on rib-lifting section roll angle and pitch angle is included to the monitoring of rib-lifting section in the construction process
Survey and the monitoring based on rib-lifting section acceleration magnitude；
Monitoring based on rib-lifting section roll angle and pitch angle, is specially：One is set among rib-lifting section to be used for
The two-way inclinator of roll angle and pitch angle is monitored, rib-lifting section is judged according to the inclination value obtained in real time at two-way inclinator
State；During the construction operation of rib-lifting section, the real-time roll angle and real-time pitch angle that get are all higher than being equal to 3 °
When, rib-lifting section is in the precarious position during construction operation, sends high risk alarm, is simultaneously emitted by stopping lifting immediately
Prompting message；During the construction operation of rib-lifting section, the real-time roll angle and real-time pitch angle that get are respectively less than 3 °
When, arch rib section is in the permission state during construction operation, does not send alarm；
Based on the monitoring of rib-lifting section acceleration magnitude, it is specially：Three-dimensional acceleration sensing is set among rib-lifting section
Device, the state of rib-lifting section is judged according to the acceleration magnitude obtained in real time at three-dimensional acceleration transducer：Obtain from arch rib section
Section starts to lift the acceleration magnitude at acceleration magnitude each moment untill current time at moment, and by all acceleration of acquisition
Value composition set, judges whether current time acceleration magnitude is notable in the set, if it is, rib-lifting section was being lifted
By construction environment disturbing influence in journey and/or during moving horizontally, rib-lifting section is high risk state at current time, is stood
Send the prompting for stopping lifting construction operation；If not, rib-lifting section current time state be construction operation during
Permission state, for low risk, do not send alarm.
Preferably, often locate the monitoring of earth anchor during construction operation to bridge cable hanging apparatus, be specially：At every place
Strain gauge is set in earth anchor, and the real-time stress value monitored according to strain gauge judges to monitor the state of earth anchor with strain gauge, specifically
For：
The stress value of each moment somewhere earth anchor untill current time since lifting construction operation is obtained, is calculated
To stress average value, the real-time stress value of strain gauge and the stress variation amplitude of stress average value are calculated；
When the 50% of stress variation amplitude >=earth anchor design permissible value, the safety coefficient of the earth anchor is less than 2, is height wind
Dangerous state, sends the prompting stopped work immediately；
As 20%≤stress variation amplitude ＜ of earth anchor design permissible value, the earth anchor designs the 50% of permissible value, the earth anchor
In moderate risk status, there are unbalance loading or the unreasonable state of stress during lifting operation, send and ask construction personnel to verify simultaneously
Adjust the prompting of the earth anchor；
When the 20% of stress variation amplitude ＜ earth anchor design permissible values, which is in construction normal condition.
Preferably, the monitoring to Sarasota in bridge cable hanging apparatus includes：To the prison of the Suo Li stress of the forward and backward side of Sarasota
Survey and the monitoring for Sarasota deflection load-bearing stress state；
Monitoring to the Suo Li stress of the forward and backward side of Sarasota, is specially：Suo Li sensings on the button cable being connected with tower crane
Device group I obtains rope force value group I in real time, the cable tension sensor group II on the button cable being connected with button tower obtains rope force value group in real time
II, set cable tension sensor group III to obtain rope force value group III in real time on dorsal funciculus, and method of discrimination is：
Each rope force value group includes two rope force value, and two rope force value are obtained by two cable tension sensor monitorings respectively, the
The rope force value of one cable tension sensor monitoring position A, the rope force value of second cable tension sensor monitoring position B, position A and position
B is separately positioned on the drag-line of two heel post of Sarasota and position A and position B is symmetrical set；
If a rope force value in each rope force value group is Δ δ1, another rope force value is Δ δ2；
As max { Δ δ1/Δδ2, Δ δ2/Δδ1During } >=10, during current construction operation, the rope of the forward and backward side of Sarasota
Power force unbalance is notable, and Sarasota is in high risk state, sends stopping construction immediately, sends and ask construction personnel to adjust rope
The prompting of power；
As 5≤max { Δ δ1/Δδ2, Δ δ2/Δδ1＜ 10 when, during current construction operation, the forward and backward side of Sarasota
There are unbalance loading, Sarasota to be in moderate risk status for Suo Li stress, sends the prompting for giving more sustained attention Suo Li changes；
As max { Δ δ1/Δδ2, Δ δ2/Δδ1＜ 5 when, during current construction operation, the Suo Li of the forward and backward side of Sarasota
Stress equalization, Sarasota are in normal condition；
Monitoring for Sarasota deflection load-bearing stress state, is specially：In the left king-post bottom of Sarasota button tower and right king-post bottom
Strain gauge is set respectively, the state of Sarasota deflection load-bearing stress is judged according to the real-time monitor value of strain gauge：
The king-post stress value of left king-post is obtained in real time, is denoted as Δ ε1, the king-post stress value for obtaining right king-post in real time is denoted as Δ
ε2,
As max { Δ ε1/Δε2, Δ ε2/Δε1During } >=3, during current construction operation, there are serious unbalance loading for Sarasota
Stress, Sarasota are high risk state, send the prompting for stopping construction operation immediately, asking construction personnel to withdraw danger zone, together
When, send the prompting for asking corresponding personnel to find out deflection load-bearing stress reason；
As 1≤max { Δ ε1/Δε2, Δ ε2/Δε1＜ 3 when, the left king-post of Sarasota and right king-post discontinuity equalization, Sarasota
For moderate risk status, prompt corresponding personnel to find out in time and the problem of deflection load-bearing stress occur, the feedback after Resolving probiems are received
After message, construction prompting can be continued by sending；
As max { Δ ε1/Δε2, Δ ε2/Δε1＜ 1 when, during current construction operation, the left king-post of Sarasota and the right side
King-post stress is consistent, and Sarasota is normal condition.
Preferably, to the monitoring of the state of construction area wind environment field, it is specially：Wind speed and direction is set to pass in Sarasota tower top
Sensor, the state of construction area wind environment field is judged according to the wind speed wind direction sensor：
Current time is calculated according to the air speed value and wind-force value obtained in real time at the wind speed wind direction sensor
Wind-force；
When the wind-force ＞ moderate gales, during current construction operation, the state of construction area wind environment field is height
Risk status, sends and stops rib-lifting section lifting operation, ask construction personnel to withdraw the prompting in dangerous operation region；
When the wind-force≤moderate gale, during current construction operation, the state of construction area wind environment field is can work
Make state, meanwhile, the operating personnel that hoists sends the prompting for setting draught exclusion device.
Preferably, to the Suo Li variation monitorings of main rope, it is specially：Magnetic flux cable tension test sensing is set in main rope
Device, the state of main rope is judged according to the implementation monitoring data of the magnetic flux cable tension test sensor：
When implementation monitoring data are more than or equal to pre-set rope force threshold, current time, main rope is in improper
Working status, sends alarm；
When implementation monitoring data are less than pre-set rope force threshold, current time, main rope is in normal work shape
State.
The beneficial effects of the invention are as follows：
Bridge cable Lift-on/Lift-off System safety monitoring method of the present invention is used for Bridge construction cable-hoisting construction process
The safety monitoring of middle temporary structure.The method of the invention lifts the monitoring of posture not only for hoisting heavy, also directed to cable
Load-bearing monitor in rope crane system under Sarasota structure difference operating mode, and Sarasota main push-towing rope earth anchor load-bearing monitor, form the peace of system
Full monitoring method, solves the problems, such as construction safety caused by multi-risk System source in cable crane work progress.
Brief description of the drawings
Fig. 1 is the structure diagram of bridge cable hanging apparatus safety monitoring system；
Fig. 2 is the schematic diagram of bridge cable hanging apparatus lifting rib-lifting section.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.It should be appreciated that the specific embodiments described herein are not used to only to explain the present invention
Limit the present invention.
Large-scale temporary structure of the CABLEWAY ERECTION SYSTEM as the steel pipe arch bridge construction time, its reliability directly determine major project
Security, construction operation ambient wind is excessive cause topple caused by the swing of lifting steel pipe segment, Sarasota discontinuity,
And excessive caused main push-towing rope safety problem of earth anchor stress etc. all directly affects the construction safety of Hoisting with Cableway System.The present invention proposes
For surroundings wind field, steel tube arch rib segment lifting posture, Sarasota stress equalization and off normal, main rope during cable hoisting
The comprehensive multi-index monitoring methods such as power, earth anchor stress and Stayed-buckle Cable Forcess harmony, grasp the potential wind in each position of Hoisting with Cableway System
The work in dangerous source, operating status, so as to fulfill the security management and control under the multi-risk System source coupling in work progress, it is ensured that personnel
Safety and equipment it is intact.Herein described bridge cable Lift-on/Lift-off System safety monitoring method is illustrated with detailed embodiment
Effect.
Embodiment
Realize that cable crane safety monitoring has:
(1) main rope is the supporting member of whole bridge cable hanging apparatus, and main rope is in different Suo Li under lifting operating modes
Differ greatly, set magnetic flux cable tension test sensor to monitor Suo Li variable conditions in hoisting process in real time in main rope.
(2) wind speed, wind pressure and wind transducer are laid at the top of Sarasota, grasps operating area surroundings wind field characteristic, is understood
Segment steel tube arch rib lifting region is influenced by environmental perturbation, and more than more than six grades strong wind stop lifting operation.
(3) Sarasota is divided into button tower and tower crane two parts, and lower part is button tower, and top is tower crane, (is connected in button top of tower with tower crane
Socket part position) two displacement measuring points, the concertedness of monitoring Sarasota both sides deformation are laterally set.
(4) the truss structure surrounding in button tower lower part sets strain gauge, for monitoring the equilibrium of button two heel post stress of tower
Property, prevent that there are notable unbalance loading situation for Sarasota stress in hoisting process.
(5) rib-lifting section lifting to be lifted usually is limited by place, is first lifted using single suspender, is completed plane swivel, turned
Change two-electron atom and lift simultaneously assembly in place.The application sets two-way inclinator and acceleration transducer on rib-lifting section to be lifted；
At the uniform velocity whether acceleration transducer be used to monitor rib-lifting section to be lifted in lifting process；Two-way inclinator is used to monitor to wait to hang
During dress rib-lifting section turns in the air and lifting it is in place during rib-lifting section to be lifted roll angle and pitch angle, it is ensured that
Rib-lifting section to be lifted lifts by crane posture in the range of defined limitation.
(6) earth anchor construction quality and stress state determine that can main rope work normally, and strain gauge, prison are set at earth anchor
Survey stress under anchorage state, it is ensured that earth anchor element structure safety.
(7) Suo Li of each construction operating mode Sarasota both sides king-post (tower crane, button tower) symmetric position is supervised by Suo Li instrument
Survey, and Sarasota symmetric position back of the body cable force is monitored, whether comparative analysis Sarasota stress is balanced.
(8) each monitoring device and the explanation of monitor terminal in this present embodiment are closed：The monitor terminal and the monitoring
Equipment wireless connection.The monitor terminal includes the one or more in laptop, tablet computer and smart mobile phone.
The monitoring index and threshold value such as following table (monitoring index sequence number corresponding diagram of each monitoring device set in the application
1)：
By using above-mentioned technical proposal disclosed by the invention, following beneficial effect has been obtained：The present invention realizes cable
The comprehensive monitoring assessment of rope hoisting process multi-risk System source, existing monitoring means and product are supervised for single risk indicator more
Survey.CABLEWAY ERECTION SYSTEM is as the more complicated large-scale temporary structure of construction, without comprehensive safety monitoring method, pin of the present invention
Material risk point during cable hoisting is extracted, from load-carrying members, force transferring structure and foundation structure are set respectively
Monitoring index and early warning threshold values, realize work progress hazardous act safety monitoring, the totality easy to construction manager to risk
Management and control.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
Depending on protection scope of the present invention.
Claims (10)
1. a kind of safety monitoring system of bridge cable hanging apparatus, the bridge cable hanging apparatus include Sarasota and with it is described
Sarasota connects main rope, and the Sarasota includes tower crane and button tower, it is characterised in that the system comprises：Monitor terminal and with institute
State monitor terminal connection monitoring device, the monitoring device include inclinator group, acceleration transducer, cable tension sensor group,
Wind speed wind direction sensor and Strain Meter Set；
The inclinator group includes being arranged on the inclinator of tower crane, is arranged on the inclinator of button tower and is arranged on rib-lifting section
Inclinator；
The cable tension sensor group include be arranged in main rope cable tension sensor, be arranged on the button cable being connected with tower crane
Cable tension sensor, be arranged on and the cable tension sensor on the button cable that be connected of button tower and be arranged on the bridge cable and lift dress
Put the cable tension sensor on dorsal funciculus；
The wind speed wind direction sensor is arranged on Sarasota；
The acceleration transducer is arranged on rib-lifting section；
The Strain Meter Set includes being arranged on the strain gauge at earth anchor and the strain gauge being arranged on Sarasota bottom.
2. the safety monitoring system of bridge cable hanging apparatus according to claim 1, it is characterised in that
Two-way inclinator is set among the rib-lifting section, and the middle part of the rib-lifting section sets three-dimensional acceleration transducer；
Inclinator is respectively provided with two heel posts of the tower crane tower top, is respectively provided with and inclines on two heel posts of the button column overhead
Angle instrument；
The cable tension sensor set in the main rope is magnetic flux cable tension test sensor.
A kind of 3. safety detection based on the safety monitoring system of bridge cable hanging apparatus as described in claim 2 any one
Method, it is characterised in that the method is realized based on the data processing method being installed on the monitor terminal；
The data processing method, is specifically realized as steps described below：Obtained by monitor terminal and be connected with the monitor terminal
Real-time Monitoring Data of each monitoring device during the construction operation that rib-lifting section is lifted, by the monitoring number in real time
According to it is direct analyze and process with pre-set threshold value comparison and/or by Real-time Monitoring Data after obtained analysis and processing result with it is pre-
The analysis result threshold value comparison first set, judges that the bridge cable hanging apparatus that each monitoring device is monitored whether there is wind
Danger, if it is, sending prompting message；If it is not, then continue to judge.
4. method according to claim 3, it is characterised in that the monitoring of the tower-like state of make-up, is specially：The two of button column overhead
Button tower inclinator is set on a heel post, the state of button tower is judged according to the inclination angle obtained in real time at two button tower inclinators：
The inclination angle of two button tower inclinator monitorings is obtained in real time, and the displacement off normal of button column overhead is obtained according to formula (2)；
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Work as θj>=5 ° or max { L1/L2, L2/L1} >=2, button tower are in high risk state during current construction operation, immediately
Stopping construction being sent, construction personnel withdraws the prompting of danger zone；
As 3 °≤θj5 ° of ＜ or 1≤max { L1/L2, L2/L1＜ 2, detain tower and moderate risk shape is in during current construction operation
State, sends the prompting for asking construction personnel to verify button tower stress；
Work as θj3 ° of ＜ and max { L1/L2, L2/L1＜ 1, the permission state that tower is in during construction operation is detained, does not send alarm；
LjRepresent the displacement off normal of button tower heel post j tower tops, H represents the height of button tower, θjRepresent inclining for button tower inclinator j monitorings
Angle, j represent the heel post numbering of button tower, j=1 or j=2.
5. method according to claim 4, it is characterised in that the monitoring to tower crane state, is specially：The two of tower crane tower top
Tower crane inclinator is set on a heel post, the state of tower crane is judged according to the inclination angle obtained in real time at two tower crane inclinators：
The inclination angle of two tower crane inclinator monitorings is obtained in real time, and the displacement off normal of tower crane tower top is obtained according to formula (1)；
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Work as θi' >=10 ° or max { L1′/L2', L2′/L1' >=2 when, tower crane is in high risk during current construction operation
State, sends stopping construction immediately, and construction personnel withdraws the prompting of danger zone；
As 5 °≤θi10 ° of ' ＜ or 1≤max { L1′/L2', L2′/L1' ＜ 2 when, during tower crane is in during current construction operation
Risk status is spent, sends the prompting for asking construction personnel to verify tower crane stress；
As 5 ° of θ ' ＜ and max { L1′/L2', L2′/L1' ＜ 1 when, tower crane is in the permission state during construction operation, does not send
Alarm；
LiThe displacement off normal of ' expression tower crane heel post i tower tops, the height of H ' expression tower cranes, LjRepresent button tower heel post j tower tops
Displacement off normal, θi' represent the inclination angle of tower crane inclinator i monitoring, i represent the heel post numbering of tower crane, i=1 or i=2, j=1 or
J=2.
6. method according to claim 3, it is characterised in that include the monitoring of rib-lifting section in the construction process based on arch
The monitoring of rib segment roll angle and pitch angle and the monitoring based on rib-lifting section acceleration magnitude；
Monitoring based on rib-lifting section roll angle and pitch angle, is specially：One is set to be used to monitor among rib-lifting section
The two-way inclinator of roll angle and pitch angle, the shape of rib-lifting section is judged according to the inclination value obtained in real time at two-way inclinator
State；During the construction operation of rib-lifting section, when the real-time roll angle and real-time pitch angle that get are all higher than being equal to 3 °, arch
Rib segment is in the precarious position during construction operation, sends high risk alarm, is simultaneously emitted by stopping carrying for lifting immediately
Show message；During the construction operation of rib-lifting section, when the real-time roll angle and real-time pitch angle that get are respectively less than 3 °, arch
Rib section is in the permission state during construction operation, does not send alarm；
Based on the monitoring of rib-lifting section acceleration magnitude, it is specially：Three-dimensional acceleration transducer, root are set among rib-lifting section
The state of rib-lifting section is judged according to the acceleration magnitude obtained in real time at three-dimensional acceleration transducer：Obtain since rib-lifting section
The acceleration magnitude at acceleration magnitude each moment untill current time at moment is lifted, and all acceleration magnitudes of acquisition are formed
Set, judges whether current time acceleration magnitude is notable in the set, if it is, rib-lifting section is in lifting process
And/or during moving horizontally by construction environment disturbing influence, rib-lifting section be high risk state at current time, send out immediately
Go out to stop the prompting of lifting construction operation；If not, rib-lifting section current time state be construction operation during permit
Perhaps state, for low risk, does not send alarm.
7. method according to claim 3, it is characterised in that often locate during construction operation to bridge cable hanging apparatus
The monitoring of earth anchor, is specially：Strain gauge is set in every place's earth anchor, the real-time stress value monitored according to strain gauge judges and strain
The state of institute's monitoring earth anchor is counted, is specially：
The stress value of each moment somewhere earth anchor untill current time since lifting construction operation is obtained, being calculated should
Power average value, calculates the real-time stress value of strain gauge and the stress variation amplitude of stress average value；
When the 50% of stress variation amplitude >=earth anchor design permissible value, the safety coefficient of the earth anchor is less than 2, is high risk shape
State, sends the prompting stopped work immediately；
When the 50% of 20%≤stress variation amplitude ＜ of earth anchor design permissible value earth anchor design permissible values, which is in
Moderate risk status, there are unbalance loading or the unreasonable state of stress during lifting operation, sends and asks construction personnel to verify and adjust
The prompting of the earth anchor；
When the 20% of stress variation amplitude ＜ earth anchor design permissible values, which is in construction normal condition.
8. method according to claim 3, it is characterised in that the monitoring to Sarasota in bridge cable hanging apparatus includes：It is right
The monitoring of the Suo Li stress of the forward and backward side of Sarasota and the monitoring for Sarasota deflection load-bearing stress state；
Monitoring to the Suo Li stress of the forward and backward side of Sarasota, is specially：Cable tension sensor group on the button cable being connected with tower crane
I obtains rope force value group I in real time, the cable tension sensor group II on the button cable being connected with button tower obtains rope force value group II in real time,
Cable tension sensor group III is set to obtain rope force value group III in real time on dorsal funciculus, method of discrimination is：
Each rope force value group includes two rope force value, and two rope force value are obtained by two cable tension sensor monitorings respectively, first
Cable tension sensor monitors the rope force value of position A, and the rope force value of second cable tension sensor monitoring position B, position A and position B divide
It is not arranged on the drag-line of two heel post of Sarasota and position A and position B is symmetrical set；
If a rope force value in each rope force value group is Δ δ1, another rope force value is Δ δ2；
As max { Δ δ1/Δδ2, Δ δ2/Δδ1During } >=10, during current construction operation, the Suo Li stress of the forward and backward side of Sarasota
Disequilibrium is notable, and Sarasota is in high risk state, sends stopping construction immediately, sends and ask construction personnel to adjust carrying for Suo Li
Show；
As 5≤max { Δ δ1/Δδ2, Δ δ2/Δδ1＜ 10 when, during current construction operation, the Suo Li of the forward and backward side of Sarasota
There are unbalance loading, Sarasota to be in moderate risk status for stress, sends the prompting for giving more sustained attention Suo Li changes；
As max { Δ δ1/Δδ2, Δ δ2/Δδ1＜ 5 when, during current construction operation, the Suo Li stress of the forward and backward side of Sarasota
Equilibrium, Sarasota are in normal condition；
Monitoring for Sarasota deflection load-bearing stress state, is specially：Distinguish in the left king-post bottom of Sarasota button tower and right king-post bottom
Strain gauge is set, the state of Sarasota deflection load-bearing stress is judged according to the real-time monitor value of strain gauge：
The king-post stress value of left king-post is obtained in real time, is denoted as Δ ε1, the king-post stress value for obtaining right king-post in real time is denoted as Δ ε2,
As max { Δ ε1/Δε2, Δ ε2/Δε1During } >=3, during current construction operation, Sarasota there are serious deflection load-bearing stress,
Sarasota is high risk state, sends the prompting for stopping construction operation immediately, asking construction personnel to withdraw danger zone, meanwhile, hair
Go out the prompting for asking corresponding personnel to find out deflection load-bearing stress reason；
As 1≤max { Δ ε1/Δε2, Δ ε2/Δε1＜ 3 when, the left king-post of Sarasota and right king-post discontinuity equalization, during Sarasota is
Risk status is spent, prompts corresponding personnel to find out in time and the problem of deflection load-bearing stress occurs, the feedback message after Resolving probiems are received
Afterwards, construction prompting can be continued by sending；
As max { Δ ε1/Δε2, Δ ε2/Δε1＜ 1 when, during current construction operation, the left king-post and right king-post of Sarasota by
Power is consistent, and Sarasota is normal condition.
9. method according to claim 3, it is characterised in that the monitoring to the state of construction area wind environment field, is specially：
Wind speed wind direction sensor is set in Sarasota tower top, the shape of construction area wind environment field is judged according to the wind speed wind direction sensor
State：
The wind-force at current time is calculated according to the air speed value and wind-force value obtained in real time at the wind speed wind direction sensor；
When the wind-force ＞ moderate gales, during current construction operation, the state of construction area wind environment field is high risk
State, sends and stops rib-lifting section lifting operation, ask construction personnel to withdraw the prompting in dangerous operation region；
When the wind-force≤moderate gale, during current construction operation, the state of construction area wind environment field is the shape that can work
State, meanwhile, the operating personnel that hoists sends the prompting for setting draught exclusion device.
10. method according to claim 3, it is characterised in that to the Suo Li variation monitorings of main rope, be specially：In main push-towing rope
Magnetic flux cable tension test sensor is set on rope, judges to lead according to the implementation monitoring data of the magnetic flux cable tension test sensor
The state of cable：
When implementation monitoring data are more than or equal to pre-set rope force threshold, current time, main rope is in non-normal working
State, sends alarm；
When implementation monitoring data are less than pre-set rope force threshold, current time, main rope is in normal operating conditions.
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