CN105628513B - Steel pipe concrete bending component is studied in load and the device and method of performance under corrosion - Google Patents
Steel pipe concrete bending component is studied in load and the device and method of performance under corrosion Download PDFInfo
- Publication number
- CN105628513B CN105628513B CN201610113497.7A CN201610113497A CN105628513B CN 105628513 B CN105628513 B CN 105628513B CN 201610113497 A CN201610113497 A CN 201610113497A CN 105628513 B CN105628513 B CN 105628513B
- Authority
- CN
- China
- Prior art keywords
- support
- hinged
- steel pipe
- pipe concrete
- bending component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
Abstract
The device and method of steel pipe concrete bending component performance under load and corrosion is studied, belongs to technical field of structural engineering.Device：It is made up of load maintainer, anti-corrosion mechanism and measuring mechanism；Fixing end hinged-support and free end hinged-support are provided with bearing, both ends and the fixing end hinged-support and free end hinged-support of steel pipe concrete bending component are hinged；After in free end, the outside of hinged-support sets force transmitting board, pull bar to pass through force transmitting board and fixing end hinged-support, its both ends is connected with nut；The outer end of pull bar is connected after passing through reaction plate with nut, and jack is set between force transmitting board and reaction plate；Minus plate is sleeved on outside steel pipe concrete bending component, and the negative pole of external direct current power supply is connected with minus plate, and positive pole is connected with the steel pipe of steel pipe concrete bending component.Method：Carry out initial loading stage experiment；Electrochemical corrosion is carried out to test with long-term load phase；Carry out destroying load phase experiment；Draw the eccentricity pressure mid-span deflection stress the Complete Curve of steel pipe concrete bending component.
Description
Technical field
The invention belongs to technical field of structural engineering, exists more particularly to one kind for studying concrete filled steel tube bending component
The experimental rig and method of performance under long duration load and electrochemical corrosion environment.
Background technology
Concrete filled steel tube belongs to one kind of combining structure, refers to fill concrete and two kinds of common stress of material in steel pipe
And the structure formed.It can be divided into solid steel tube concrete, concrete-filled double skin steel tube and centrifugal steel pipe by the arrangement of steel pipe
Concrete etc.；It can be divided into circle, side/rectangle, polygon and special-shaped steel pipe concrete etc. by cross sectional shape.Concrete filled steel tube is in reality
Larger load is often born in the engineering of border, while also to be made by the corrosion of corrosive liquids in surrounding environment or gas etc.
With above mentioned problem is in engineering design with can not be ignored in application, it is necessary to is studied.
In order to study stress performance of the concrete filled steel tube bending component under eccentricity pressure and corrosion collective effect, necessarily relate to
And to corresponding experimental rig and method.At present, for concrete filled steel tubular compression bending component under long duration load performance study
Experimental rig and method or the experimental rig for concrete filled steel tubular compression bending component electrochemical corrosion resistant performance study and side
Method, but above-mentioned experimental rig and method can only realize a kind of effect, it is impossible to while realize the length to concrete filled steel tubular compression bending component
Phase load action and electrochemical corrosion effect.
The content of the invention
The problem of existing for prior art, the present invention provide a kind of research steel pipe concrete bending component under load and corrosion
The device and method of performance, the present invention can realize to the action of long-term load of steel pipe concrete bending component and electrochemical corrosion work simultaneously
Experiment.
To achieve these goals, the present invention adopts the following technical scheme that：One kind research steel pipe concrete bending component is in load
Device with corroding lower performance, is made up of load maintainer, anti-corrosion mechanism and measuring mechanism three parts；
The load maintainer includes bearing, and fixing end hinged-support and free end hinged-support, institute are respectively arranged with bearing
State fixing end hinged-support to be fixedly connected by the first hinged-support fix bar and the first hinged-support fix bar nut with bearing, in freedom
Hinged-support fixed plate is provided with above the hinged-support of end, is provided with and rolls between free end hinged-support and hinged-support fixed plate
Axle, is provided with lower roller bearing between free end hinged-support and bearing, and hinged-support fixed plate, free end hinged-support and bearing pass through
Two hinged-support fix bars are fixedly connected with the second hinged-support fix bar nut；The both ends of steel pipe concrete bending component respectively with fixing end
Hinged-support and free end hinged-support are hinged；Force transmitting board, the inner side of the force transmitting board are provided with the outside of the hinged-support of free end
Be in contact with the outside of the hinged-support of free end, pull bar through after force transmitting board and fixing end hinged-support, its fixing end hinged-support side with
First rod nut is connected, and opposite side is connected with the second rod nut；Counter-force is provided with the outside of the second rod nut
Plate, the outer end of pull bar are connected with the 3rd rod nut after passing through reaction plate, are provided between force transmitting board and reaction plate very heavy
Top；
The anti-corrosion mechanism includes etching tank, minus plate and external direct current power supply, and the etching tank is arranged on by support
Between fixing end hinged-support and free end hinged-support, pre-manufactured hole is provided with the side wall at etching tank both ends；The minus plate is
Loop configuration, it is sleeved on outside the steel pipe concrete bending component in etching tank, between being left between minus plate and steel pipe concrete bending component
Gap, the etching tank are set with negative plate insulation；The negative pole of external direct current power supply is connected with minus plate, positive pole and steel pipe concrete pressure
The steel pipe of curved component is connected；
The measuring mechanism includes the first load transducer, the second load transducer, the first mechanical amesdial, the second machine
Tool formula amesdial and the 3rd mechanical amesdial, first load transducer are sleeved between the second rod nut and force transmitting board
Pull bar outside, the second load transducer is arranged between jack and force transmitting board；The first mechanical amesdial is provided with three
Individual, the midpoint and two three branch opening positions, the second mechanical amesdial for being separately positioned on steel pipe concrete bending component are provided with two
It is individual, it is separately positioned on the hinged place of steel pipe concrete bending component and fixing end hinged-support and free end hinged-support, the 3rd mechanical thousand
It is divided to table to be provided with two, is separately positioned on the inner side of fixing end hinged-support and free end hinged-support.
Using the method for described research steel pipe concrete bending component device of performance under load and corrosion, including following step
Suddenly：
Step 1：Initial loading stage experiment is carried out,
Step A：Hold-down support, place fixing end hinged-support and free end hinged-support respectively on bearing；
Step B：First hinged-support fix bar is passed through into fixing end hinged-support and bearing, and screws the first hinged-support fix bar
Nut；
Step C：In free end, hinged-support fixed plate is placed in the top of hinged-support, and in free end, hinged-support is fixed with hinged-support
Upper roller bearing is placed between plate, roller bearing under being placed between free end hinged-support and bearing, the second hinged-support fix bar is passed through into hinge
Bearing fixed plate, free end hinged-support and bearing, and screw in the second hinged-support fix bar nut；By the two of steel pipe concrete bending component
After end is each passed through the pre-manufactured hole in the side wall of etching tank both ends, it is hinged with fixing end hinged-support and free end hinged-support；
Step D：After adjustment makes steel pipe concrete bending component horizontal positioned, the second hinged-support fix bar nut is screwed；
Step E：In free end, force transmitting board, the inner side of force transmitting board and the outside of free end hinged-support are placed in the outside of hinged-support
It is in contact, after pull bar is sequentially passed through into force transmitting board and fixing end hinged-support, enters the first pull bar spiral shell from its fixing end hinged-support sidespin
Cap, after opposite side penetrates the first load transducer, screw the second rod nut；
Step F：The amount of deflection of steel pipe concrete bending component is measured by the first mechanical amesdial, passes through second mechanical thousand point
Table measures support settlement amount, and the decrement between fixing end hinged-support and force transmitting board is measured by the 3rd mechanical amesdial；
Step G：The second rod nut is screwed to be loaded, until reach setting load, while record every grade of load and its
Corresponding amount of deflection, decrement and support settlement amount；
Step 2：Electrochemical corrosion is carried out to test with long-term load phase,
Step A：Keep original upload value constant, carry out sealing first between steel pipe concrete bending component and etching tank and exhausted
Edge processing：
Step B：Minus plate is sleeved on outside the steel pipe concrete bending component in etching tank, minus plate and steel pipe concrete bending component
Between leave gap, the etching tank is set with negative plate insulation；
Step C：Corrosive liquid is injected into etching tank, liquid level is higher than the upper surface of minus plate；By external direct current
The negative pole in source is connected with minus plate, and its positive pole is connected with the steel pipe of steel pipe concrete bending component；External direct current power supply is connected to open
Begin corrosion, periodic logging load and its corresponding amount of deflection, decrement and support settlement amount during corrosion, until reach corrosion with
The long-term loading time limit；
Step 3：Carry out destroying load phase experiment,
Step A：Extract corrosive liquid out, remove external direct current power supply, etching tank and minus plate；
Step B：Reaction plate is penetrated on the pull bar on the outside of the second rod nut, and screws in the 3rd rod nut, in power transmission
The second load transducer and jack are put between plate and reaction plate；
Step C：By jack pair steel pipe concrete bending component do it is disposable destroy load test, while record load and its
Corresponding amount of deflection, decrement and support settlement amount；
Step 4：The data measured according to three above step-by-step test, draw steel pipe concrete bending component eccentricity pressure-across
Middle amount of deflection stress the Complete Curve.
Beneficial effects of the present invention：
1. the present invention can realize the examination to the action of long-term load of steel pipe concrete bending component and electrochemical corrosion effect simultaneously
Test；
2. the present invention uses electrochemical corrosion, corrosion rate is higher than natural environment corrosion, can accelerate experiment progress；
3. present invention examination as obtained by initial loading stage, electrochemical corrosion with long-term load phase and destruction load phase
Eccentricity pressure-mid-span deflection stress the Complete Curve of concrete filled steel tubular compression bending component can be drawn out by testing data.
Brief description of the drawings
Fig. 1 is the front view that the present invention carries out device used in initial loading stage experiment；
Fig. 2 is the top view that the present invention carries out device used in initial loading stage experiment；
Fig. 3 is that the present invention carries out electrochemical corrosion and the front view of device used in the experiment of long-term load phase；
Fig. 4 is the top view that the present invention destroy device used in load phase experiment；
Fig. 5 is a certain square section solid steel tube concrete bending component eccentricity pressure-mid-span deflection stress the Complete Curve figure；
In figure：1- bearings, 2a- fixing end hinged-supports, 2b- free ends hinged-support, 3a- the first hinged-support fix bars, 3b-
Two hinged-support fix bars, 4- billets, 5a- the first hinged-support fix bar nuts, 5b- the second hinged-support fix bar nuts, on 6a-
Roller bearing, roller bearing under 6b-, 7- hinged-support fixed plates, 8- steel pipe concrete bending components, 9- etching tanks, the flat boards of 10a- first hinge, 10b- the
Two flat boards are cut with scissors, the flat boards of 10c- the 3rd hinge, 10d- fourth panels hinge, 11- bearing pins, 12- force transmitting boards, 13- pull bars, the pull bars of 14a- first
Nut, the rod nuts of 14b- second, the rod nuts of 14c- the 3rd, the load transducers of 15a- first, the load transducers of 15b- second,
The first mechanical amesdials of 16a-, the second mechanical amesdials of 16b-, the 3rd mechanical amesdials of 16c-, mechanical thousand points of 17-
Table lamina affixad, 18- lamina affixad connecting rods, 19- fluid sealants, 20- minus plates, at 21- minus plate attachments, 22- corrosive liquids, outside 23-
Connect dc source, 24- jack, 25- reaction plates, 26- supports.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1 to 4, a kind of device for studying steel pipe concrete bending component performance under load and corrosion, by loading
Mechanism, anti-corrosion mechanism and measuring mechanism three parts composition.
The load maintainer includes two bearings 1, and fixing end hinged-support 2a and freedom are respectively arranged with two bearings 1
Hinged-support 2b is held, billet 4 is provided between fixing end hinged-support 2a and bearing 1, is welded on the fixing end hinged-support 2a
Half flat board hinge is connected to, be i.e. the first flat board hinge 10a, half flat board hinge, i.e. the second flat board are welded with the hinged-support 2b of free end
Cut with scissors 10b；The fixing end hinged-support 2a passes through the first hinged-support fix bar 3a and the first hinged-support fix bar nut 5a with bearing 1
It is fixedly connected, hinged-support fixed plate 7 is provided with above the hinged-support 2b of free end, hinged-support 2b consolidates with hinged-support in free end
Roller bearing 6a is provided between fixed board 7, lower roller bearing 6b, the upper roller bearing are provided between free end hinged-support 2b and bearing 1
6a and lower roller bearing 6b is provided with three, and hinged-support fixed plate 7, free end hinged-support 2b and bearing 1 are consolidated by the second hinged-support
Fixed pole 3b and the second hinged-support fix bar nut 5b are fixedly connected；According to setting in advance in the two end plates of steel pipe concrete bending component 8
The eccentric throw counted is respectively welded half flat board hinge, i.e. the 3rd flat board hinge 10c and fourth panel hinge 10d, the 3rd flat board
Cut with scissors 10c and fourth panel hinge 10d cuts with scissors 10a by the first flat board of bearing pin 11 corresponding thereto respectively and the second flat board cuts with scissors 10b phases
Connection；Force transmitting board 12, inner side and the free end hinged-support 2b of the force transmitting board 12 are provided with the outside of the hinged-support 2b of free end
Outside be in contact, two girts 13 are through after force transmitting board 12 and fixing end hinged-support 2a, its fixing end hinged-support 2a sides
It is connected with the first rod nut 14a, opposite side is connected with the second rod nut 14b；In the second rod nut 14b outside
Be provided with reaction plate 25, the outer end of pull bar 13 is connected after passing through reaction plate 25 with the 3rd rod nut 14c, force transmitting board 12 with
Jack 24 is provided between reaction plate 25.
The anti-corrosion mechanism includes etching tank 9, the minus plate 20 and external direct current power supply 23 of steel of steel, the corrosion
Groove 9 is arranged between fixing end hinged-support 2a and free end hinged-support 2b by support 26, is set in the side wall at the both ends of etching tank 9
It is equipped with pre-manufactured hole；The minus plate 20 is loop configuration, and it is sleeved on outside the steel pipe concrete bending component 8 in etching tank 9, minus plate
20 are not contacted with steel pipe concrete bending component 8, i.e., gap, the etching tank 9 are left between minus plate 20 and steel pipe concrete bending component 8
Minus plate attachment at 21 with the insulation set of minus plate 20；The negative pole of external direct current power supply 23 is connected with minus plate 20, positive pole
It is connected with the steel pipe of steel pipe concrete bending component 8.
The measuring mechanism includes the first load transducer 15a, the second load transducer 15b, the first mechanical amesdial
16a, the second mechanical mechanical amesdial 16c of amesdial 16b and the 3rd, the first load transducer 15a are sleeved on second
Outside pull bar 13 between rod nut 14b and force transmitting board 12, the second load transducer 15b is arranged on jack 24 and force transmitting board 12
Between.Mechanical amesdial lamina affixad 17 is respectively arranged with the midpoint of steel pipe concrete bending component 8 and two three branch opening positions,
The mechanical amesdial lamina affixad 17 is welded to connect in advance by lamina affixad connecting rod 18 and steel pipe concrete bending component 8, steel pipe
Concrete bending component 8 and the insulation set of lamina affixad connecting rod 18；The first mechanical amesdial 16a is provided with three, three
One mechanical amesdial 16a pointer is individually positioned on three pieces of mechanical amesdial lamina affixads 17；Second mechanical amesdial
16b is provided with two, and two the second mechanical amesdial 16b pointer is individually positioned in steel pipe concrete bending component 8 and fixing end
Hinged-support 2a and free end hinged-support 2b hinged place；3rd mechanical amesdial 16c is provided with two, and two the 3rd mechanical
Amesdial 16c pointer is individually positioned in fixing end hinged-support 2a and free end hinged-support 2b inner side.
The present embodiment is so that a certain square section solid steel tube concrete bending component is tested as an example, solid steel tube concrete bending component
Length L=1400mm, external diameter B=140mm, steel pipe original wall thickness ts=3.67mm, corrosion thickness Δ t=0.55mm, corrosive liquid
Concentration ρ=3.5%, design, which are held, carries grade rbc=15% and etching time t=120d.
The test method of the device is divided into three phases according to experimental stage, i.e.,：Initial loading stage, electrochemical corrosion with
Long-term load phase and destruction load phase.
Using the method for described research steel pipe concrete bending component device of performance under load and corrosion, including following step
Suddenly：
Step 1：Initial loading stage experiment is carried out, as shown in Figure 1 and Figure 2,
Step A：Two bearings 1 are fixed, fixing end hinged-support 2a and free end hinged-support are placed respectively on two bearings 1
2b, billet 4 is placed between fixing end hinged-support 2a and bearing 1, half is welded with the fixing end hinged-support 2a and is put down
Plate is cut with scissors, i.e. the first flat board hinge 10a, and half flat board hinge, i.e. the second flat board hinge 10b are welded with the hinged-support 2b of free end；
Step B：First hinged-support fix bar 3a is passed through into fixing end hinged-support 2a and bearing 1, and screws the first hinged-support
Fix bar nut 5a；
Step C：In free end, hinged-support fixed plate 7 is placed in hinged-support 2b top, in free end hinged-support 2b with it is hinged
Three upper roller bearing 6a are placed between seat fixed plate 7, three lower roller bearing 6b are placed between free end hinged-support 2b and bearing 1, will
Second hinged-support fix bar 3b passes through hinged-support fixed plate 7, free end hinged-support 2b and bearing 1, and screws in the second hinged-support and consolidate
Fixed pole nut 5b；Two and half flat board hinges are respectively welded at steel pipe concrete bending component 8 according to pre-designed eccentric throw
In two end plates, described two half flat board hinges are that the 3rd flat board hinge 10c and fourth panel cut with scissors 10d, the steel pipe concrete pressure that will be welded
The both ends of curved component 8 are each passed through the pre-manufactured hole in the both ends side wall of etching tank 9, the 3rd flat board hinge 10c and fourth panel hinge
10d cuts with scissors 10a by the first flat board of bearing pin 11 corresponding thereto respectively and the second flat board cuts with scissors 10b and is connected；
Step D：After adjustment makes steel pipe concrete bending component 8 horizontal positioned, even if the center line of two bearing pins 11 is in same water
Flat place, screws the second hinged-support fix bar nut 5b；
Step E：In free end, force transmitting board 12, inner side and the free end hinged-support of force transmitting board 12 are placed in hinged-support 2b outside
It is in contact on the outside of 2b, after two girts 13 are sequentially passed through into force transmitting board 12 and fixing end hinged-support 2a, from its fixing end
Hinged-support 2a sidespins enter the first rod nut 14a, after opposite side penetrates the first load transducer 15a, screw the second pull bar spiral shell
Cap 14b；
Step F：The amount of deflection of steel pipe concrete bending component 8 is measured by the first mechanical amesdial 16a, it is mechanical by second
Amesdial 16b measures support settlement amount, by the 3rd mechanical amesdial 16c measure fixing end hinged-support 2a and force transmitting board 12 it
Between decrement；
Step G：Manually screw the second rod nut 14b to be loaded, until reaching setting load, while record every grade of lotus
Load and its corresponding amount of deflection, decrement and support settlement amount；
Step 2：Electrochemical corrosion is carried out to test with long-term load phase, as shown in figure 3,
Step A：Keep original upload value constant, first by between two end plates and etching tank 9 of steel pipe concrete bending component 8
Gap sealed with fluid sealant 19, and insulation processing；
Step B：Minus plate 20 is sleeved on outside the steel pipe concrete bending component 8 in etching tank 9, minus plate 20 and steel pipe concrete pressure
Curved component 8 is not contacted, i.e., gap, the minus plate 20 and etching tank 9 are left between minus plate 20 and steel pipe concrete bending component 8
21 insulation sets at minus plate attachment；
Step C：Corrosive liquid 22 is injected into etching tank 9, liquid level is higher than the upper surface of minus plate 20；Will be external straight
The negative pole of stream power supply 23 is connected with minus plate 20, and its positive pole is connected with the steel pipe of steel pipe concrete bending component 8；Connect external straight
Power supply 23 is flowed, the minus plate 20 with steel is negative electrode, and the steel pipe of steel pipe concrete bending component 8 is anode, starts to corrode, in the corrosion phase
Between periodic logging load and its corresponding amount of deflection, decrement and support settlement amount, until reaching corrosion and long-term loading time limit；
Step 3：Carry out destroying load phase experiment, as shown in figure 4,
Step A：Extract corrosive liquid 22 out, remove external direct current power supply 23, etching tank 9 and minus plate 20；
Step B：Reaction plate 25 is penetrated on the pull bar 13 on the outside of the second rod nut 14b, and screws in the 3rd rod nut
14c, the second load transducer 15b and jack 24 are put between force transmitting board 12 and reaction plate 25, and ensure that the second load passes
The axial line of the axial line of sensor 15b and jack 24 and bearing pin 11 is at same level；
Step C：Disposable destruction load test is done to steel pipe concrete bending component 8 by jack 24, while records load
And its corresponding amount of deflection, decrement and support settlement amount；
Step 4：The data measured according to three above step-by-step test, draw the eccentricity pressure of steel pipe concrete bending component 8-
Mid-span deflection stress the Complete Curve.
Eccentricity pressure (N)-mid-span deflection (u obtained after off-testm) stress the Complete Curve, as shown in figure 5, wherein
Fine line is initial loading stage result of the test, and heavy line is electrochemical corrosion and long-term load phase result of the test, and dotted line is
Destroy load phase result of the test.
The present invention is tested by initial loading stage, electrochemical corrosion and long-term load phase and destruction load phase, is obtained
To the data of steel pipe concrete bending component electrochemical corrosion resistant performance under long duration load.It is not only suitable for solid steel tube coagulation
Soil, concrete-filled double skin steel tube and centrifugal concrete filled steel tube etc., are also applied for circle, side/rectangle, polygon and profile iron
Pipe concrete etc..
Claims (2)
1. a kind of steel pipe concrete bending component of studying is in load and the device of performance under corrosion, it is characterised in that by load maintainer, corruption
Lose mechanism and measuring mechanism three parts composition；
The load maintainer includes bearing, and fixing end hinged-support and free end hinged-support are respectively arranged with bearing, described solid
Fixed end hinged-support is fixedly connected with bearing by the first hinged-support fix bar and the first hinged-support fix bar nut, is cut with scissors in free end
Hinged-support fixed plate is provided with above bearing, roller bearing is provided between free end hinged-support and hinged-support fixed plate,
Lower roller bearing is provided between free end hinged-support and bearing, hinged-support fixed plate, free end hinged-support and bearing pass through the second hinge
Bearing fix bar is fixedly connected with the second hinged-support fix bar nut；The both ends of steel pipe concrete bending component are hinged with fixing end respectively
Seat and free end hinged-support are hinged；Be provided with force transmitting board on the outside of the hinged-support of free end, the inner side of the force transmitting board with from
By being in contact on the outside of the hinged-support of end, after pull bar passes through force transmitting board and fixing end hinged-support, its fixing end hinged-support side and first
Rod nut is connected, and opposite side is connected with the second rod nut；Reaction plate is provided with the outside of the second rod nut, is drawn
The outer end of bar is connected after passing through reaction plate with the 3rd rod nut, and jack is provided between force transmitting board and reaction plate；
The anti-corrosion mechanism includes etching tank, minus plate and external direct current power supply, and the etching tank is arranged on fixation by support
Hold between hinged-support and free end hinged-support, pre-manufactured hole is provided with the side wall at etching tank both ends；The minus plate is annular
Structure, it is sleeved on outside the steel pipe concrete bending component in etching tank, and gap, institute are left between minus plate and steel pipe concrete bending component
Etching tank is stated to set with negative plate insulation；The negative pole of external direct current power supply is connected with minus plate, and positive pole bends structure with steel pipe concrete
The steel pipe of part is connected；
The measuring mechanism includes the first load transducer, the second load transducer, the first mechanical amesdial, second mechanical
Amesdial and the 3rd mechanical amesdial, first load transducer are sleeved on the drawing between the second rod nut and force transmitting board
Outside bar, the second load transducer is arranged between jack and force transmitting board；The first mechanical amesdial is provided with three, point
The midpoint and two three branch opening positions, the second mechanical amesdial for not being arranged on steel pipe concrete bending component are provided with two, point
The hinged place of steel pipe concrete bending component and fixing end hinged-support and free end hinged-support is not arranged on, and the 3rd mechanical amesdial is set
Two are equipped with, is separately positioned on the inner side of fixing end hinged-support and free end hinged-support.
2. tested using the research steel pipe concrete bending component described in claim 1 in the device of load and performance under corrosion
Method, it is characterised in that comprise the following steps：
Step 1：Initial loading stage experiment is carried out,
Step A：Hold-down support, place fixing end hinged-support and free end hinged-support respectively on bearing；
Step B：First hinged-support fix bar is passed through into fixing end hinged-support and bearing, and screws the first hinged-support fix bar spiral shell
Cap；
Step C：In free end, hinged-support fixed plate is placed in the top of hinged-support, in free end hinged-support and hinged-support fixed plate it
Between place upper roller bearing, roller bearing under being placed between free end hinged-support and bearing, the second hinged-support fix bar is passed through into hinged-support
Fixed plate, free end hinged-support and bearing, and screw in the second hinged-support fix bar nut；By the both ends of steel pipe concrete bending component point
After pre-manufactured hole that Chuan Guo be in the side wall of etching tank both ends, it is hinged with fixing end hinged-support and free end hinged-support；
Step D：After adjustment makes steel pipe concrete bending component horizontal positioned, the second hinged-support fix bar nut is screwed；
Step E：In free end, force transmitting board is placed in the outside of hinged-support, and the inner side of force transmitting board on the outside of the hinged-support of free end with connecting
Touch, after pull bar is sequentially passed through into force transmitting board and fixing end hinged-support, enter the first rod nut from its fixing end hinged-support sidespin, from
After opposite side penetrates the first load transducer, the second rod nut is screwed；
Step F：The amount of deflection of steel pipe concrete bending component is measured by the first mechanical amesdial, is surveyed by the second mechanical amesdial
Support settlement amount is measured, the decrement between fixing end hinged-support and force transmitting board is measured by the 3rd mechanical amesdial；
Step G：Screw the second rod nut to be loaded, until reach setting load, while record every grade of load and its correspondingly
Amount of deflection, decrement and support settlement amount；
Step 2：Electrochemical corrosion is carried out to test with long-term load phase,
Step A：Keep original upload value constant, sealed first between steel pipe concrete bending component and etching tank and insulation position
Reason；
Step B：Minus plate is sleeved on outside the steel pipe concrete bending component in etching tank, between minus plate and steel pipe concrete bending component
Gap is left, the etching tank is set with negative plate insulation；
Step C：Corrosive liquid is injected into etching tank, liquid level is higher than the upper surface of minus plate；By external direct current power supply
Negative pole is connected with minus plate, and its positive pole is connected with the steel pipe of steel pipe concrete bending component；Connect external direct current power supply and start corruption
Erosion, periodic logging load and its corresponding amount of deflection, decrement and support settlement amount during corrosion, until reach corrosion with it is long-term
Load the time limit；
Step 3：Carry out destroying load phase experiment,
Step A：Extract corrosive liquid out, remove external direct current power supply, etching tank and minus plate；
Step B：Penetrate reaction plate on the pull bar on the outside of the second rod nut, and screw in the 3rd rod nut, force transmitting board with
The second load transducer and jack are put between reaction plate；
Step C：By jack pair steel pipe concrete bending component do it is disposable destroy load test, while record load and its correspondingly
Amount of deflection, decrement and support settlement amount；
Step 4：The data measured according to three above step-by-step test, the eccentricity pressure-span centre for drawing steel pipe concrete bending component are scratched
Spend stress the Complete Curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610113497.7A CN105628513B (en) | 2016-02-29 | 2016-02-29 | Steel pipe concrete bending component is studied in load and the device and method of performance under corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610113497.7A CN105628513B (en) | 2016-02-29 | 2016-02-29 | Steel pipe concrete bending component is studied in load and the device and method of performance under corrosion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105628513A CN105628513A (en) | 2016-06-01 |
| CN105628513B true CN105628513B (en) | 2018-03-27 |
Family
ID=56043652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610113497.7A Expired - Fee Related CN105628513B (en) | 2016-02-29 | 2016-02-29 | Steel pipe concrete bending component is studied in load and the device and method of performance under corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105628513B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698267A (en) * | 2013-12-31 | 2014-04-02 | 沈阳建筑大学 | Device and method for studying performance of steel pipe concrete bending member under load and corrosion conditions |
| CN103728182A (en) * | 2013-12-31 | 2014-04-16 | 沈阳建筑大学 | Device and method for researching performance of steel pipe concrete axial compression component under load and corrosion |
| CN205404300U (en) * | 2016-02-29 | 2016-07-27 | 沈阳建筑大学 | Research steel pipe concrete bend component load with corrode under device of performance |
-
2016
- 2016-02-29 CN CN201610113497.7A patent/CN105628513B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698267A (en) * | 2013-12-31 | 2014-04-02 | 沈阳建筑大学 | Device and method for studying performance of steel pipe concrete bending member under load and corrosion conditions |
| CN103728182A (en) * | 2013-12-31 | 2014-04-16 | 沈阳建筑大学 | Device and method for researching performance of steel pipe concrete axial compression component under load and corrosion |
| CN205404300U (en) * | 2016-02-29 | 2016-07-27 | 沈阳建筑大学 | Research steel pipe concrete bend component load with corrode under device of performance |
Non-Patent Citations (5)
| Title |
|---|
| Full-range analysis on square CFST stub columns and beams under loading and chloride corrosion;Hou Chao et al.;《Thin-Walled Structures》;20130409;第68卷;50-64 * |
| Square concrete filled steel tubular (CFST) members under loading and chloride corrosion: experiments;Han Linhai et al.;《Journal of Constructional Steel Research》;20111227;第71卷;11-25 * |
| 圆钢管混凝土轴压短柱在长期荷载-氯盐腐蚀耦合作用下的试验研究;王庆利 等;《土木工程学报》;20150630;第48卷(第增刊1期);48-52 * |
| 氯离子腐蚀环境下钢管混凝土轴拉构件受力性能研究;花幼星 等;《工程力学》;20150630;第32卷(第增刊期);149-152，158 * |
| 长期荷载下圆钢管混凝土梁的耐腐蚀性能试验研究;王庆利 等;《建筑结构学报》;20151231;第36卷(第增刊2期);50-55 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105628513A (en) | 2016-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103439189B (en) | A kind of rock Biaxial Compression mesoscale experiments device under stress-current-chemical Coupling | |
| CN102721616B (en) | Electroosmosis shear apparatus | |
| CN103698267B (en) | The apparatus and method of research steel pipe the concrete flexure member performance under load with corrosion | |
| CN103728182B (en) | The apparatus and method of research steel pipe concrete pull-down component performance under load with corrosion | |
| CN105259043B (en) | Batch concrete filled steel tube self-balanced loading device | |
| CN105043865A (en) | Testing method for concrete damage fracture performance under double-field coupling | |
| CN105319130A (en) | Testing method for testing compression-shear performance of jointed rock | |
| CN105628513B (en) | Steel pipe concrete bending component is studied in load and the device and method of performance under corrosion | |
| CN205404300U (en) | Research steel pipe concrete bend component load with corrode under device of performance | |
| CN109883926A (en) | Biaxial pressure acts on lower concrete chloride ion diffusion test macro and its method | |
| CN206593969U (en) | The axial tension test device of cement-base composite material test specimen | |
| CN106053325B (en) | A kind of experimental method carrying out electrochemical corrosion under stress coupling effect | |
| CN205404373U (en) | Device of research steel pipe concrete axial tension component performance under load and corruption | |
| CN105628599B (en) | Steel pipe concrete members in axial tension is studied in load and the device and method of performance under corrosion | |
| CN108152149A (en) | A kind of true triaxial shearing experiment device and its application method | |
| CN106483010A (en) | Bearing for beam-columns experimental provision | |
| CN113866083A (en) | Corrosion device for simulating combined action of dynamic microorganisms and stress | |
| Eng | Response of pile foundations due to lateral force and soil movements | |
| CN207894722U (en) | Waw-1000 type pressure testing machines test the auxiliary stand of rod piece anti-bending strength | |
| CN206740512U (en) | A kind of device for determining steel plate reinforcement concrete beam anti-bending bearing capacity | |
| CN205620059U (en) | Pile - soil interface cuts stress test device | |
| CN219348471U (en) | Integrated slope support soil nail drawing counterforce device | |
| CN213842965U (en) | Test device for coupling of concrete internal pressure stress and water pressure | |
| CN207894721U (en) | Yas-2000 type pressure testing machines test the auxiliary stand of rod piece stress anti-bending strength | |
| CN108007759A (en) | A kind of method that elastic deformation energy at rock material peak load point is measured in Brazilian diametral compression test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Qingli Inventor after: An Ran Inventor after: Han Linhai Inventor after: Li Qingshan Inventor before: Wang Qingli Inventor before: Ling Zhangna Inventor before: Han Linhai Inventor before: Li Qingshan |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180327 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |