CN109489882A - Big-size model test is anchored with cable-stayed bridge cable and cable tension test device and method - Google Patents
Big-size model test is anchored with cable-stayed bridge cable and cable tension test device and method Download PDFInfo
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- CN109489882A CN109489882A CN201811395594.5A CN201811395594A CN109489882A CN 109489882 A CN109489882 A CN 109489882A CN 201811395594 A CN201811395594 A CN 201811395594A CN 109489882 A CN109489882 A CN 109489882A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
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Abstract
The invention belongs to the vibration-testings of structure member；The shock-testing technical field of structure member discloses a kind of anchoring of big-size model test cable-stayed bridge cable and cable tension test device and method, comprising: adjust rope screw rod；It adjusts and runs through drag-line guide pipe on the right side of connector, running through inside drag-line guide pipe has suspension cable, suspension cable is wound on spool, adjustment connector inner lower is arranged with card silk device, it adjusts and is welded on spool on the downside of rope screw rod, rope screw rod is adjusted to be fixed on above adjustment connector by nut, pad is equipped with gasket between nut and adjustment connector, tune rope screw rod upper end is spirally connected joystick；It adjusts and runs through girder anchorage screw on the left of connector, girder anchorage screw is socketed with tension sensor, girder anchorage nut, and pad is equipped with anti-skid washer between girder anchorage nut.The invention enables Cable stress in large scale Cable-stayed Bridge Model close to true stress condition, and can conveniently and efficiently realize the adjustment of Suo Li and the test of Suo Li, and simple and easy, precision is higher.
Description
Technical field
The invention belongs to the vibration-testings of structure member；The shock-testing technical field of structure member, more particularly to it is a kind of
Big-size model test is anchored with cable-stayed bridge cable and cable tension test device and method.
Background technique
Currently, the prior art commonly used in the trade is such that cable-stayed bridge is by the tower of pressure-bearing, the rope of tension and to hold curved beam
The indeterminate flexible system of a kind of high order that body combines, the structure are considered as drag-line and connect instead of the multispan elastic bearing of buttress
The advantages of continuous beam, moment of flexure in beam body can be reduced by having, and reduce building height, mitigated dead load and saved material.Cable-stayed bridge is more
For building across footpath at 500~800m bridge site, entity project is in large scale, more at present to analyze its stress performance
It is studied indoors using the method for model test, the geometric dimension of structural model test is smaller than prototype, is easy to make, and assembles and disassembles
It is convenient, and the same model can carry out the simulation test of multiple and different operating conditions.Currently, for different similar proportions, different materials
The Cable-stayed Bridge Model of material, suspension cable section size and initial tension value after carrying out similar calculating substantially reduce compared with practical,
Anchor type and cable tension test are not quite similar compared with Practical Project.Cable-stayed Bridge Model laboratory carry out when drag-line anchoring be usually
Will be locked with buckle after the disposable tensioning to desirable value of drag-line, and influence of the construction in later period process to Suo Li is had ignored, and oblique pull
Bridge belongs to high order statically indeterminate structure, and each step in construction can all cause the change of entire built bridge structure internal force and Suo Li,
Bridge in process of construction both it is noted that in work progress built structure safety, again consider bridge completion state full-bridge structure
Safety, therefore the Suo Li and very big at bridge Suo Li difference in constructing, if Suo Li is fixed on the construction stage, at the bridge stage
Suo Li will be unable to guarantee, may cause bridge integral linear irregularity or part Suo Li transfinites, and increase is open to traffic rear vehicle on bridge
The danger jolted or even be broken bridge cable, therefore the Suo Li of drag-line needs repeatedly to adjust in entire work progress, ability
Reach design requirement.This method is very inconvenient to the adjustment of Suo Li, and not high to the control precision of tensioning value.To the Suo Li of model
Test method in the middle part of drag-line generally using tension sensor is installed, and since suspension cable is too thin, sensor is difficult solid in connection
It is fixed, and the quality of sensor is larger for the drag-line of test model, after connecting with suspension cable, suspension cable is easy to happen cunning
De-, relaxation, anchor system failure, the properties such as quality, rigidity of entire drag-line change, cause experimental data error compared with
Greatly.Model test is to carry out reduced scale according to a certain percentage according to actual bridge structure, before not changing experimental result rule
It puts, a kind of means studied.Compared with Practical Project, the ratio of model test is usually only capable of reaching the 1/ of full size
20, it is sensitive that structure is complicated.Currently without the cable tension test sensor dedicated for model test, adopted on usually used practical bridge
Tension sensor carries out test, and practical cable-stayed bridge is since structure is huge, and across footpath is up to 500~800m or so, tower height
Up to 100m or more, weight is larger for the single steel strand of the cable tension test size sensor relative model test of suspension cable,
It will lead to sensor and drag-line using conventional with suspension cable directly concatenated connection gimmick and can not well fix, generate and slide relatively
It moves, causes the deviation of test result.Apparently according to previous test result, every 24 hours Suo Li can loosen 10% automatically~
20%, seriously affect the accuracy of experiment.
In conclusion problem of the existing technology is:
(1) prior art in the middle part of drag-line using tension sensor is installed, and since suspension cable is too thin, sensor is in connection
It is difficult to fix, and the quality of sensor is larger for the drag-line of test model, after connecting with suspension cable, suspension cable is easy
Occur to slip, relax, anchor system failure, the properties such as quality, rigidity of entire drag-line change, and experimental data is caused to be missed
Difference is larger.
(2) in existing model test easily because Carcel loosely caused by adjust rope inconvenience, higher cost, relatively test Suo Li precision
It is relatively low.
Solve the difficulty and meaning of above-mentioned technical problem:
Indoor model test suspension cable by real bridge design and reduced scale limited, for make the indoor model after reduced scale with
Practical Project stress is comparable, and single steel strand can only be used to be tested.7 are mostly used in current practical cable-stayed bridge
Root steel strand wires twist into a branch of, need to configure 30~130 beam steel strand wires groups according to stress and form a skew cables, full bridge configuration is up to a hundred
Skew cables assist bridge deck to bear vehicle, pedestrian and environmental load.And every skew cables after use for laboratory bridge model reduced scale
Can only be using the single steel strand of diameter only 15.2mm, and the steel strand wires are needed according to work progress at any time during experiment
It is elastic to adjust drag-line, to control the stress of every steel strand wires (suspension cable in model), keeps it same with practical science of bridge building
Stage condition is coincide, and scientific research is instructed.Excessively very thin single steel strand not can guarantee in the state of stretching naturally directly
It is connected with cable tension test with sensor, and since suspension cable both ends need to be anchored at the bridge tower and beam bottom of cable-stayed bridge, also can not
Suo Li adjusting is carried out by directly elastic steel strand wires, therefore experimenter's designed, designed is needed to be capable of fixing suspension cable and survey with Suo Li
The anchor-hold system being connected is set in trial assembly.
Single steel strand diameter is small, and light weight, surface is smooth, need to consider when being connect with anchor system due to anchor and
Cable tension test device quality generates gravity and pull much larger than steel strand wires and to steel strand wires causes Suo Li persistently to increase, and is filled by anchoring
The influence with test device is set, prevents experimental data from really reflecting the mechanical characteristic of Cable-stayed Bridge Model itself, error reaches
30% or more.When serious Relative sliding occur in suspension cable and anchor contact, also once there is error and reach actual test
As a result 3 times or more of situation.
To sum up, it needs to study lightweight, anti-slide is strong, stablizes, portable indoor Cable-stayed Bridge Model anchor-hold and Suo Li
Test device is extremely urgent.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of big-size model tests is anchored with cable-stayed bridge cable
And cable tension test device and method.
The invention is realized in this way a kind of big-size model test is anchored with cable-stayed bridge cable and cable tension test device,
The big-size model test is anchored with cable-stayed bridge cable and cable tension test device is provided with
Adjust rope screw rod；
It adjusts and runs through drag-line guide pipe on the upside of connector, through there is suspension cable inside drag-line guide pipe, suspension cable is wrapped in tune
It in rope screw rod primary spool, passes through upper anchorage screw and is connected with tension sensor, upper and lower side is arranged with card silk dress inside adjustment connector
It sets；
Adjust rope screw rod right end weld primary spool left end, adjust rope screw rod by nut be fixed on adjustment connector left end, nut with
Pad is equipped with setting-up piece, rope screw rod left end is adjusted to be spirally connected joystick between adjustment connector；
It adjusts and runs through girder anchorage screw on the downside of connector, suspension cable and tension sensor upper end on girder in anchorage screw
It is connected, tension sensor lower end is connected with lower anchorage screw, and lower anchorage screw is socketed with girder anchorage nut, girder anchorage nut
Between pad be equipped with anti-skid washer.
Further, card silk device one end clamping adjustment connector is fixed, and the other end and tune rope screw rod are in close contact；It is hand
Bar, which is screwed onto, adjusts rope screw rod left end.
Further, anchorage screw is screwed onto below adjustment connector on the girder, is symmetrically distributed in drag-line guide pipe
The heteropleural for adjusting connector, is located on the same line；
Further, the suspension cable is fixed on king-tower, and anchorage screw is connected in girder under girder；It is provided in girder
With the vertically disposed anchor plate of anchorage screw under girder, girder anchorage screw is screwed onto anchor plate by two girder anchorage nuts
On.
Further, described two girder anchorage nut pads are equipped with anti-skid washer.
Further, the left end of the adjustment connector is bolted with nut, adjusts rope screw rod to be spirally connected in nut, and protrude into adjustment and connect
Head；Pad is equipped with setting-up piece between nut and adjustment connector.
Further, the through-hole through adjustment connector or so surface is offered in the adjustment connector, through-hole internal diameter, which is greater than, to be adjusted
The outer diameter of rope screw rod；Drag-line guide pipe and through-hole perforation are arranged.
Further, described that rope screw rod is adjusted to be equipped with the notch that attenuates in through-hole in adjustment connector；Adjust rope screw rod with card
The contact area of silk device broadens region.
Another object of the present invention is to provide a kind of suspension cable anchor-holds of big-size model test described in application
And the big-size model test of cable tension test device suspension cable anchor-hold and cable tension test method, the large scale model try
Test with suspension cable anchor-hold and cable tension test method the following steps are included:
Step 1 according to each cross dimensions of reduced scale computation model of suspension cable and makes bridge model；
Step 2, production or the above each device accessory of preparation；
Suspension cable one end of 10cm length more more than needed than practical guy cable length is passed through drag-line guide pipe and fixation simultaneously by step 3
It is wrapped in and adjusts on rope screw rod；
Step 4, the other end of suspension cable are fixed in king-tower anchor cable region；
Step 5, after girder anchorage screw welds shape tension sensor, one end is securely fitted on adjustment connector, the other end
It is fixed on anchor plate by girder anchorage nut；
Step 6, after modelling, pull out joystick, by rotation adjust rope screw rod adjust rope force value, be tightened up or
The suspension cable loosened affects tension sensor, and tension sensor is connected on data collecting instrument, and data collecting instrument is passed by pulling force
Small stress variation is converted into the rope force value changed in suspension cable and exports in instrument associated display in sensor, therefore can lead to
Cross value when data acquisition instrument reading, the control inclined guy cable stretching of tension sensor connection；
Step 7, after cable force adjustment, rotation joystick slides into card silk device from the notch that attenuates of adjustment connector to adjust
The region that broadens of whole connector is pushed into joystick, suspension cable is compressed；
Step 8 is tightened nut and is fixed connector is adjusted, stuck suspension cable, and is adopted by the data that tension sensor connects
Collect instrument, the rope force value after reading inclined guy cable stretching.
Another object of the present invention is to provide a kind of using big-size model test suspension cable anchor-hold and
The suspension cable of cable tension test device.
In conclusion advantages of the present invention and good effect are as follows: cannot be square for drag-line during existing cable tension test
Just the defect adjusted is provided with adjustment joint structure, which forms a connecting link, convenient for installing with suspension cable, girder anchorage screw
Connection, and be provided with adjust rope screw rod wherein, adjusting suspension cable winding (or release) in such a way that rope screw rod is adjusted in rotation
On rope screw rod, to achieve the purpose that tighten (or loosening) suspension cable, thus, suspension cable is easily adjusted；It is directed to simultaneously
During adjusting rope, it is easy to produce the problem of drag-line loosens, is adjusting rope screw rod winding drag-line area to be provided with the notch that attenuates, and pass through card
Silk device and rope screw rod is adjusted to broaden the way of contact in area, simple switching adjusts rope, stuck function, increases the stability of drag-line；Simultaneously
The vibration that girder anchorage screw generates is influenced for subsequent handlings such as girder load, drillings after suspension cable anchoring, using double masters
Beam anchorage nut is arranged, and increases anti-skid washer between two girder anchorage nuts, alleviates and vibrates to suspension cable anchor system bring
It influences, and increases system integral fastening power；It is provided with anchor plate simultaneously, keeps load point structure firmer.
Big-size model test provided by the invention suspension cable anchor-hold and cable tension test device, so that large scale is oblique
Cable stress is close to true stress condition in drag-line model, and can conveniently and efficiently realize the adjustment of Suo Li and the survey of Suo Li
Examination, simple and easy, precision is higher.
Detailed description of the invention
Fig. 1 is big-size model test cable-stayed bridge cable anchoring provided in an embodiment of the present invention and cable tension test device knot
Structure schematic diagram；
Fig. 2 is big-size model test cable-stayed bridge cable anchoring provided in an embodiment of the present invention and cable tension test device peace
Schematic diagram on Cable-stayed Bridge Model；
Fig. 3 is the enlarged drawing provided in an embodiment of the present invention for part A at Fig. 2；
Fig. 4 is provided in an embodiment of the present invention for suspension cable and the initial configuration schematic diagram for adjusting rope screw rod to cooperate；
Fig. 5 is the structural schematic diagram provided in an embodiment of the present invention pulled out when rope screw rod being adjusted to prepare to adjust rope；
Structural schematic diagram when Fig. 6 is adjusting stay cable force provided in an embodiment of the present invention；
Fig. 7 is the structure provided in an embodiment of the present invention for having adjusted stay cable force, having adjusted rope screw deadlocking suspension cable
Schematic diagram；
In figure: 1, adjusting rope screw rod；2, nut；3, setting-up piece；4, drag-line guide pipe；5, suspension cable；6, connector is adjusted；7,
Card silk device；8, girder anchorage screw；9, tension sensor；10, anti-skid washer；11, girder anchorage nut；12, anchor plate；
13, girder；14, king-tower；15, main pier；16, joystick.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Present invention seek to address that the prior art using tension sensor is installed in the middle part of drag-line, since suspension cable is too thin, passes
Sensor is difficult to fix in connection, and the quality of sensor is larger for the drag-line of test model, connects with suspension cable
Afterwards, suspension cable is easy to happen slippage, relaxation, anchor system failure, and the properties such as quality, rigidity of entire drag-line change,
Cause experimental data error larger；In existing model test easily because Carcel loosely caused by adjust rope inconvenience, higher cost, relatively survey
Try the higher problem of Suo Li precision.Big-size model test provided by the invention is anchored with cable-stayed bridge cable and cable tension test fills
It sets, so that Cable stress and can conveniently and efficiently realize Suo Li's close to true stress condition in large scale suspension cable model
Adjustment and the test of Suo Li, simple and easy, precision is higher.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, big-size model test provided in an embodiment of the present invention suspension cable anchor-hold and cable tension test
Device includes: to adjust rope screw rod 1, nut 2, setting-up piece 3, drag-line guide pipe 4, suspension cable 5, adjustment connector 6, card silk device 7, master
Beam anchorage screw 8, tension sensor 9, anti-skid washer 10, girder anchorage nut 11, anchor plate 12, girder 13, king-tower 14, main pier
15, joystick 16.
It adjusts and runs through drag-line guide pipe 4 on the right side of connector 6, through there is suspension cable 5 inside drag-line guide pipe 4, suspension cable 5 is wound
In primary spool, adjustment 6 inner lower of connector is arranged with card silk device, and 1 lower end of rope screw rod is adjusted to weld primary spool upper end, adjusts rope screw rod
1 is fixed on 6 top of adjustment connector by nut 2, and pad is equipped with setting-up piece 3, adjusts on rope screw rod 1 between nut 2 and adjustment connector 6
Hold the joystick 16 that is spirally connected；Adjust connector 6 on the left of run through girder anchorage screw 8, girder anchorage screw 8 be socketed with tension sensor 9,
Girder anchorage nut 11, pad is equipped with anti-skid washer 10 between girder anchorage nut 11.
As shown in Fig. 2, being king-tower 14 above main pier 15, girder 13 is vertically set between main pier 15, king-tower 14.Test
When, one end of suspension cable 5 is fixedly installed on king-tower 14, and the other end extend into inside adjustment connector 6 across drag-line guide pipe 4 and twines
It is wound on and adjusts on rope screw rod 1.The effect of drag-line guide pipe 4 is to maintain the straight of drag-line, makes drag-line will not after the adjustment stretching of connector 6
Bending.Girder anchorage screw 8 is mounted in girder 13.
As shown in Figure 3, it is contemplated that hard point may the excessive problem of load, be provided in girder 13 in the present invention with it is main
The vertically disposed anchor plate 12 of beam anchorage screw 8, girder anchorage screw 8 are mounted on anchor plate 12 by girder anchorage nut 11
On.
As shown in Figure 4-Figure 7, the basic adjustment principle that adjustment connector 6 prevents suspension cable 5 from getting loose is card silk device 7
It is fixed with rope screw rod 1 is adjusted, suspension cable and the initial configuration for adjusting rope screw rod to cooperate are as shown in Figure 4.Joystick is pulled out when unclamping nut 2
When 16, card silk device 7 is restrained by adjustment connector 6 and slides to the region that broadens for adjusting rope screw rod 1, and release adjusts rope screw rod 1 to attenuate notch area
The tune rope space in domain, as shown in Figure 5.After adjusting rope, it is pushed into joystick 16 to adjustment 6 direction of connector, card silk device 7 is adjusted
Connector 6 restrains the notched areas that attenuates for sliding to and adjusting rope screw rod 1, and card silk device 7 is contacted and withstood with tune rope screw rod 1 and is entangled in adjustment and connects
First 6 suspension cables 5 for attenuating notched areas screw on the fixed adjustment connector 6 of nut 2, and suspension cable 5 is stuck.
The basic adjustment principle that adjustment connector 6 adjusts Suo Li in suspension cable 5 is to be driven by rotation joystick 16 and adjust rope spiral shell
Bar 1 winds the suspension cable 5 extending into inside adjustment connector 6 on adjusting rope screw rod 1, shortens suspension cable 5 outside adjustment connector 6
The length in portion plays the purpose of tensioning suspension cable 5 with this.And when needing to loosen suspension cable 5, then it rotates backward and adjusts rope screw rod 1, make
Suspension cable 5 is taken off from tune rope screw rod 1, as shown in Figure 5, Figure 6.In Fig. 5, rope screw rod 1 is adjusted not rotate, and adjusts rope screw rod 1 in Fig. 6
Rotation keeps suspension cable 5 wound on it, and suspension cable 5 is tightened at this time.By the regulative mode of this simplicity, can adjust to fast power-saving
Suo Li, and can accomplish the accuracy controlling to Suo Li.
Big-size model test suspension cable anchor-hold provided in an embodiment of the present invention and cable tension test method include with
Lower step:
Step 1 according to each cross dimensions of reduced scale computation model of suspension cable and makes bridge model；
Step 2, production or the above each device accessory of preparation；
Suspension cable one end of 10cm length more more than needed than practical guy cable length is passed through drag-line guide pipe and fixation simultaneously by step 3
It is wrapped in and adjusts on rope screw rod；
Step 4, the other end of suspension cable are fixed in king-tower anchor cable region；
Step 5, after girder anchorage screw welds tension sensor, one end is securely fitted on adjustment connector, and the other end is logical
Girder anchorage nut is crossed to be fixed on anchor plate；
Step 6, after modelling, pulls out joystick, adjusts rope screw rod to adjust rope force value by rotation, and pass through drawing
Force snesor connection data acquisition instrument read, control inclined guy cable stretching when value；
Step 7, after cable force adjustment, rotation joystick slides into card silk device from the notch that attenuates of adjustment connector to adjust
The region that broadens of whole connector is pushed into joystick, suspension cable is compressed；
Step 8 is tightened nut and is fixed connector is adjusted, stuck suspension cable, and is adopted by the data that tension sensor connects
Collect instrument, the rope force value after reading inclined guy cable stretching.
6 inside of adjustment connector provided by the invention is connected with card silk device 7, and card silk device 7 is contacted with rope screw rod 1 is adjusted.It adjusts
Whole connector 6 is the structure formed a connecting link, and one side is connect with suspension cable 5, is on the other hand connect with tension sensor 9.
Total quality in this programme in view of tension sensor 9 is affected to test model, Gu tension sensor 9 is not arranged
On suspension cable 5, but the other side of adjustment connector 6 is set, is arranged with 5 heteropleural of suspension cable.Adjust its most important work of connector 6
With being to adjust the tensioning degree of suspension cable 5 and prevent suspension cable 5 from occurring loosening Suo Li is caused to reduce.
Girder anchorage screw 8 provided by the invention is main, and there are two effects, first is that since its rigidity is big, by tension sensor
9 are installed therein influence of the avoidable sensor mass to suspension cable 5；Second is that being used to connect with girder 13.It, can when specific setting
Girder anchorage screw 8 is disconnected from middle part, in the middle by the welding of tension sensor 9, the concatenation of tension sensor 9 is made to become one
Part, and in test, girder anchorage screw 8 is conllinear with suspension cable 5, therefore the data that tension sensor 9 obtains can be accurate
Suo Li situation is reacted, is acquired by the data that data collecting instrument obtains sensor；Since suspension cable model middle girder is thick
Size limitation is spent, tension sensor 9 uses conventional rebar tension sensor, and setting is convenient, and measurement result is accurate, having a size of
12cm×2.5cm×2.5cm。
Position needs to fix after tune rope screw rod 1 provided by the invention rotates, and nut 2 is provided in the present invention.Nut 2 and tune
Whole connector 6 is fixedly installed, and is equipped with rope screw rod 1 is adjusted.Rope screw rod 1 is adjusted to extend into the through-hole inside adjustment connector 6, not
It is contacted with through-hole wall, and it is to wind suspension cable 5 that the notch that attenuates, which reserves the space come,.Due to its meeting after adjusting rope screw rod 1 to rotate
It moves up and down, therefore suspension cable 5 will not be wrapped in and adjust same position on rope screw rod 1 and block it.Nut 2 and adjustment connector 6 it
Between be provided with setting-up piece 3, setting-up piece 3 can prevent drag-line end overhanging, and protect adjustment connector 6 inside building ring
Border.It adjusts and symmetrically opens up a pair of of threaded hole on the side wall of connector 6, be respectively used to connect with drag-line guide pipe 4, girder anchorage screw 8
It connects.The wall thickness for adjusting connector 6 is 12mm~18mm.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of big-size model test is anchored with cable-stayed bridge cable and cable tension test device, which is characterized in that the large scale
Model test is anchored with cable-stayed bridge cable and cable tension test device is provided with
Adjust rope screw rod；
It adjusts and runs through drag-line guide pipe on the upside of connector, through there is suspension cable inside drag-line guide pipe, suspension cable, which is wrapped in, adjusts rope spiral shell
It in bar primary spool, passes through upper anchorage screw and is connected with tension sensor, upper and lower side is arranged with card silk device inside adjustment connector；
It adjusts rope screw rod right end to weld primary spool left end, rope screw rod is adjusted to be fixed on adjustment connector left end, nut and adjustment by nut
Pad is equipped with setting-up piece, rope screw rod left end is adjusted to be spirally connected joystick between connector；
It adjusts and runs through girder anchorage screw on the downside of connector, suspension cable and tension sensor upper end phase on girder in anchorage screw
Even, tension sensor lower end is connected with lower anchorage screw, and lower anchorage screw is socketed with girder anchorage nut, girder anchorage nut it
Between pad be equipped with anti-skid washer.
2. big-size model test as described in claim 1 is existed with suspension cable anchor-hold and cable tension test device, feature
In card silk device one end clamping adjustment connector is fixed, and the other end and tune rope screw rod are in close contact；Joystick is screwed onto tune rope
Screw rod left end.
3. big-size model test as described in claim 1 is existed with suspension cable anchor-hold and cable tension test device, feature
In anchorage screw is screwed onto below adjustment connector on the girder, is symmetrically distributed in the different of adjustment connector with drag-line guide pipe
Side is located on the same line.
4. big-size model test as described in claim 1 is existed with suspension cable anchor-hold and cable tension test device, feature
In the suspension cable is fixed on king-tower, and anchorage screw is connected in girder under girder；It is provided in girder and is anchored under girder
The vertically disposed anchor plate of screw rod, girder anchorage screw are screwed on anchor plate by two girder anchorage nuts.
5. big-size model test as described in claim 1 is existed with suspension cable anchor-hold and cable tension test device, feature
In described two girder anchorage nut pads are equipped with anti-skid washer.
6. big-size model test as described in claim 1 is existed with suspension cable anchor-hold and cable tension test device, feature
In the left end of the adjustment connector is bolted with nut, adjusts rope screw rod to be spirally connected in nut, and protrude into adjustment connector；Nut and adjustment
Pad is equipped with setting-up piece between connector.
7. big-size model test as described in claim 1 is existed with suspension cable anchor-hold and cable tension test device, feature
In described to adjust the through-hole offered in connector through adjustment connector or so surface, through-hole internal diameter is greater than the outer diameter for adjusting rope screw rod；
Drag-line guide pipe and through-hole perforation are arranged.
8. big-size model test as described in claim 1 is existed with suspension cable anchor-hold and cable tension test device, feature
In described that rope screw rod is adjusted to be equipped with the notch that attenuates in through-hole in adjustment connector；Adjust rope screw rod with the contact of card silk device
Region broadens region.
9. a kind of apply big-size model test suspension cable anchor-hold and cable tension test device as described in claim 1
Big-size model test suspension cable anchor-hold and cable tension test method, which is characterized in that the big-size model test is used
Suspension cable anchor-hold and cable tension test method the following steps are included:
Step 1 according to each cross dimensions of reduced scale computation model of suspension cable and makes bridge model；
Step 2, production or the above each device accessory of preparation；
Suspension cable one end of 10cm length more more than needed than practical guy cable length is passed through drag-line guide pipe and fixation and wound by step 3
On adjusting rope screw rod；
Step 4, the other end of suspension cable are fixed in king-tower anchor cable region；
Step 5, after girder anchorage screw welds shape tension sensor, one end is securely fitted on adjustment connector, and the other end passes through
Girder anchorage nut is fixed on anchor plate；
Step 6 after modelling, pulls out joystick, adjusts rope screw rod to adjust rope force value by rotation, and pass by pulling force
Sensor connection data acquisition instrument read, control inclined guy cable stretching when value；
Step 7, after cable force adjustment, rotation joystick makes card silk device slide into adjustment from the notch that attenuates of adjustment connector to connect
The region that broadens of head is pushed into joystick, suspension cable is compressed；
Step 8 is tightened nut and is fixed connector is adjusted, stuck suspension cable, and the data collecting instrument connected by tension sensor
Device, the rope force value after reading inclined guy cable stretching.
10. a kind of surveyed using big-size model test described in claim 1~8 any one with cable-stayed bridge cable anchoring and Suo Li
The cable-stayed bridge that trial assembly is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811395594.5A CN109489882B (en) | 2018-11-22 | 2018-11-22 | Cable-stayed bridge cable anchoring and cable force testing device and method for large-size model test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811395594.5A CN109489882B (en) | 2018-11-22 | 2018-11-22 | Cable-stayed bridge cable anchoring and cable force testing device and method for large-size model test |
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| Publication Number | Publication Date |
|---|---|
| CN109489882A true CN109489882A (en) | 2019-03-19 |
| CN109489882B CN109489882B (en) | 2020-10-13 |
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| CN109883624A (en) * | 2019-04-11 | 2019-06-14 | 招商局重庆交通科研设计院有限公司 | A kind of waterproof test equipment designed using cylinder |
| CN110455441A (en) * | 2019-07-24 | 2019-11-15 | 河海大学 | A kind of external tendon prestressing force testing auxiliary device |
| CN111855169A (en) * | 2020-06-12 | 2020-10-30 | 德阳天元重工股份有限公司 | Suspension bridge AS method main cable strand boot anchoring test assembly and test method thereof |
| CN112051081A (en) * | 2020-09-08 | 2020-12-08 | 安徽工业大学 | Large-cantilever safe intelligent construction system and method for directly guiding construction by experimental data |
| CN113218687A (en) * | 2021-04-29 | 2021-08-06 | 西南交通大学 | Cable-stayed bridge cable-beam anchoring structure reduced scale test model loading device and test method thereof |
| CN113884233A (en) * | 2020-07-01 | 2022-01-04 | 中国石油天然气股份有限公司 | Pipeline suspension cable crossing structure model main cable stress adjusting device |
| CN114061878A (en) * | 2021-11-19 | 2022-02-18 | 江苏科技大学 | Device for cable-beam coupling vibration test |
| CN116907827A (en) * | 2023-09-14 | 2023-10-20 | 贵州省公路工程集团有限公司 | Dynamic testing device and method for detachable anchor point device |
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