CN106644323B - A kind of girder steel test model measuring device and its test method - Google Patents
A kind of girder steel test model measuring device and its test method Download PDFInfo
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- CN106644323B CN106644323B CN201611209452.6A CN201611209452A CN106644323B CN 106644323 B CN106644323 B CN 106644323B CN 201611209452 A CN201611209452 A CN 201611209452A CN 106644323 B CN106644323 B CN 106644323B
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- girder steel
- reaction frame
- model
- reflecting plate
- measuring device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
Abstract
The present invention relates to a kind of girder steel test model measuring devices, including girder steel model, support, reaction frame system, load loading system, strain value measurement system and deformation values to measure system；Girder steel model is the i shaped steel being composed of top flange, web and lower flange, load loading system is arranged at girder steel model span centre top flange center, the lower end of reaction frame system fixes on the ground, upper end and the span direction of girder steel model are vertically arranged, the upper surface of load loading system is bonded setting with the lower surface of reaction frame system upper end, strain value measurement system is connected with web, deformation values measurement system is connected with top flange, lower flange or web, and the invention further relates to a kind of girder steel test model measuring device and its test methods.The beneficial effects of the present invention are: a kind of girder steel test model measuring device of the invention and its test method, save the cost, flexible operation, measurement accuracy is high, and work efficiency is high.
Description
Technical field
The present invention relates to structural steelwork technical field more particularly to a kind of girder steel test model measuring device and its tests
Method.
Background technique
Girder steel is a kind of common steel structure member, is widely used in the engineerings such as building, bridge, harbour.Steel
Beam is constantly subjected to both domestic and external as component important in steel construction, the research of large span and the stress deformation of anisotropic section Steel Beams
Pay attention to.
In structural steelwork, the prototype test for carrying out live girder steel not only needs a large amount of human and material resources, but also exists
Test the limitation of the problems such as instrument, test site, test safety.This has also promoted researcher grinding to girder steel performance
Study carefully and focuses in laboratory.It is not only that the theoretical research of girder steel provides test data and testing and verification, and is engineering knot
Structure design plays reference role.
During existing girder steel model measurement test, the deformation values of girder steel model generally use dial gauge measurement, are trying
It needs ceaselessly to adjust dial gauge position during testing, and cannot be guaranteed that dial gauge contact is vertical with steel beam surface always, easily lead
Measurement result accuracy is caused to reduce.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of save the cost, flexible operation, measurement accuracy is high, work effect
Rate high a kind of girder steel test model measuring device and its test method.
The technical scheme to solve the above technical problems is that a kind of girder steel test model measuring device, including steel
Beam model, support, reaction frame system, load loading system, strain value measurement system and deformation values measure system；
Support is vertically arranged on the ground, and girder steel model level is placed between support, and girder steel model is by top flange, abdomen
Be in a horizontal state setting above and below the i shaped steel that plate and lower flange are composed, top flange and lower flange, and web is vertically arranged in
The upper and lower ends of web, the cross of girder steel model are separately connected between top flange and lower flange, and in the middle part of top flange and lower flange
Cross sectional shape be it is I-shaped,
Load loading system for measuring girder steel Model load value is arranged at girder steel model span centre top flange center,
The lower end of reaction frame system fixes on the ground, and upper end is vertically arranged with girder steel model span center line, and counter-force
The both ends of frame system upper end are symmetrical arranged centered on the center of girder steel model cross section top flange, load loading system
Upper surface is bonded setting with the lower surface of reaction frame system upper end,
Strain value for measuring girder steel model strain value measures system and is connected with web,
Deformation values for measuring girder steel model deformation values measure system and are connected with top flange, lower flange or web.
Further, reaction frame system includes reaction frame crossbeam, reaction frame column and reaction frame pedestal；Reaction frame pedestal and ground
Face is fixedly connected, and there are two reaction frame column is set, two reaction frame columns are arranged in the two sides of web height direction center line, and two
The lower end of a reaction frame column is symmetricly set on the both ends of reaction frame pedestal, and upper end extends straight up, two reaction frame columns
The adjustable reaction frame crossbeam of placing height is equipped between upper end, reaction frame crossbeam is arranged in parallel with reaction frame pedestal, and and steel
The length direction of beam model cross section top flange is horizontally disposed.
Further, load loading system includes rigid press strip, jack, load transducer and numerical value dynamometer；Rigidity pressure
The center position of the upper surface of top flange is arranged in item, and the center position of rigid press strip upper surface, lotus is arranged in jack
The center position of jack upper surface, the upper surface of load transducer and the lower surface of reaction frame crossbeam is arranged in set sensor
Fitting setting, load transducer are connected with numerical value dynamometer by conducting wire.
Further, strain value measurement system includes resistance strain gage, program-controlled statical strain indicator and the first data processing computer；
Resistance strain gage be equipped with it is multiple, multiple resistance strain gages are arranged at intervals on the center line in web height direction, resistance strain gage
Program-controlled statical strain indicator is connected by conducting wire, program-controlled statical strain indicator is connected by conducting wire for recording girder steel model strain value
First data processing computer.
Further, deformation values measurement system includes laser displacement sensor, chuck type pedestal, plain base magnetic base, letter
Number converter and the second data processing computer；Laser displacement sensor, chuck type pedestal and plain base magnetic base be equipped with it is multiple,
Laser displacement sensor is connected with one end of one end of corresponding chuck type pedestal or plain base magnetic base respectively, chuck type
The edge of the other end of pedestal and top flange perhaps lower flange be connected plain base magnetic base the other end and web or
The lower surface of lower flange is connected, and laser displacement sensor is turned by conducting wire and the signal of reception and the conversion of realizing measurement data
Parallel operation is connected, and signal adapter is connected by conducting wire with the second data processing computer of record girder steel model deformation values.
Further, the lower end of laser displacement sensor is equipped with clump weight.
Further, further including the smooth surface reflection unit for making girder steel model precise alignment；Smooth surface reflection unit includes perpendicular
Vertical reflecting plate, horizontally disposed horizontal direction reflecting plate, weight and the spirit level being directly arranged, vertical reflecting plate are rectangular slab, and
If there are two, two vertical reflecting plates are connected with two reaction frame columns respectively, and are symmetrical arranged, the lower end of vertical reflecting plate
The weight for keeping vertical reflecting plate in a vertical state always is connected by flexible steel cable, vertical reflecting plate is equipped with level
Device；Horizontal direction reflecting plate is rectangular slab, and horizontal direction reflecting plate is arranged in the upper surface of reaction frame pedestal, and be located at girder steel model across
Four side midpoints of the underface of middle lower flange, horizontal direction reflecting plate are provided with spirit level.
Further, four right angles of horizontal direction reflecting plate are provided with for adjusting the micro- of horizontal direction reflection plate flatness
Screw rod is adjusted, horizontal direction reflecting plate is connected with reaction frame pedestal by finely tuning screw rod.
Further, being arranged with the first spacing collar on reaction frame column, the outer wall of the first spacing collar and reaction frame column is fixed
It connects, is equipped with list in the side close to vertical reflecting plate on the first spacing collar and cuts with scissors, in close first spacing collar on vertical reflecting plate
Side be equipped with another single hinge, the first spacing collar is connected with vertical reflecting plate by two single cut with scissors.
Further, a kind of test method of girder steel test model measuring device, includes the following steps:
S1: the girder steel model for being pasted with resistance strain gage is arranged in the middle part of reaction frame system in the form of simply supported beam；
S2: the horizontal depth of beam of positioning counter-force frame；
S3: rigid press strip is arranged in installation load transducer, and fixed jack between girder steel model and jack；
Plain base magnetic base and chuck type pedestal: being successively arranged in the point position of girder steel model by S4, then by laser
Displacement sensor is clamped on plain base magnetic base and chuck type pedestal, and guarantees that laser displacement sensor can rotate freely；
S5: vertical reflecting plate is fixed on reaction frame column, by flexible steel cable by weight by installation smooth surface reflection unit
It is lifted on the lower end of vertical reflecting plate；
S6: resistance strain gage, program-controlled statical strain indicator and the first data processing computer are sequentially connected by conducting wire；By lotus
Set sensor is connected with numerical value dynamometer by conducting wire；By laser displacement sensor, signal adapter and the second data processing
Computer is sequentially connected by conducting wire；
S7: by load transducer and numerical value dynamometer, the accurate hierarchical loading of jack, laser displacement sensor are realized
The deformation values of accurate measurement girder steel model pass through the second data processing computer for analysis and display deformation Value Data；Program-controlled static state is answered
The strain value for becoming the girder steel model that instrument is surveyed passes through the first data processing computer for analysis and display strain Value Data.
Based on the above-mentioned technical proposal, the beneficial effects of the present invention are:
1, a kind of girder steel test model measuring device of the invention, solving former girder steel experimental study must be by large size
The drawbacks of testing equipment can just carry out, save the cost, measurement accuracy is high, and work efficiency is high, greatly shortens the duration, and greatly mention
The high precision of girder steel deflection measurement, girder steel payload values, strain value, deformation Value Data keep preferable during guarantee test
Synchronism；
2, a kind of girder steel test model measuring device of the invention, the laser beam centrality that laser displacement sensor is emitted
Preferably, it can remain horizontal or vertical state, be not required to go ceaselessly to adjust during test, and reading data interval can be with
It is chosen by test requirements document；
3, a kind of girder steel test model measuring device of the invention, smooth surface reflection unit can play positioning to girder steel model
With the precise alignment after guarantee girder steel model hypothesis.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of main view of the invention；
Fig. 2 is the structural schematic diagram of side view of the invention；
Fig. 3 is the structural schematic diagram in two kinds of Laser emission directions of laser displacement sensor of the present invention；
Fig. 4 is the structural schematic diagram of plain base magnetic base of the present invention；
Fig. 5 is the structural schematic diagram of chuck type pedestal of the present invention；
Fig. 6 is the structural schematic diagram of vertical reflecting plate and the first spacing collar of the invention；
Fig. 7 is the structural schematic diagram of horizontal direction reflecting plate of the present invention；
Fig. 8 is the structural schematic diagram of U-shaped buckle of the present invention；
Fig. 9 is the structural schematic diagram of the first spacing collar of the invention.
In attached drawing, parts list represented by the reference numerals are as follows:
1, girder steel model, 2, rigid press strip, 3, jack, 4, load transducer, 5, reaction frame crossbeam, 6, counter-force erection
Column, the 7, second spacing collar, 8, reaction frame pedestal, 9, anchor (bolt) hole, 10, laser displacement sensor, 11, chuck type pedestal, 12,
Fastening nut, 13, plain base magnetic base, 14, resistance strain gage, 15, vertical reflecting plate, the 16, first spacing collar, 17, steel wire
Rope preformed hole, 18, flexible steel cable, 19, weight, 20, fine tuning screw rod, 21, horizontal direction reflecting plate, 22, program-controlled statical strain indicator,
23, the first data processing computer, 24, conducting wire, 25, signal adapter, 26, numerical value dynamometer, 27, spirit level, 28, U-shaped buckle,
29, single hinge, 30, clump weight, the 31, second data processing computer.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in Figure 1, a kind of girder steel test model measuring device, including girder steel model 1, support, reaction frame system, load
Loading system, strain value measurement system and deformation values measure system；
Support is vertically arranged on the ground, and girder steel model 1 is lain in a horizontal plane between support, girder steel model 1 be by top flange,
Be in a horizontal state setting above and below the i shaped steel that web and lower flange are composed, top flange and lower flange, and web is vertically arranged
The upper and lower ends of web are separately connected between top flange and lower flange, and in the middle part of top flange and lower flange, girder steel model 1
Cross-sectional shape be it is I-shaped,
Load loading system for measuring 1 load value of girder steel model is arranged at 1 span centre top flange center of girder steel model,
The lower end of reaction frame system fixes on the ground, and upper end is vertically arranged with 1 span center line of girder steel model, and counter-force
The both ends of frame system upper end are symmetrical arranged centered on the center of 1 cross section top flange of girder steel model, load loading system
Upper surface be bonded setting with the lower surface of reaction frame system upper end,
Strain value for measuring 1 strain value of girder steel model measures system and is connected with web,
Deformation values for measuring 1 deformation values of girder steel model measure system and are connected with top flange, lower flange or web.
Further, reaction frame system includes reaction frame crossbeam 5, reaction frame column 6 and reaction frame pedestal 8；Reaction frame pedestal 8
It is fixedly connected with the ground, reaction frame pedestal 8 passes through the anchor (bolt) hole 9 that the reaction frame pedestal is reserved by ground bolt and fixes
There are two on level ground, reaction frame column 6 is set, two reaction frame columns 6 are arranged in the two of web height direction center line
Side, the lower end of two reaction frame columns 6 are symmetricly set on the both ends of reaction frame pedestal 8, and upper end extends straight up, two counter-forces
It erects and is equipped with the adjustable reaction frame crossbeam 5 of placing height between 6 upper end of column, reaction frame crossbeam 5 is parallel with reaction frame pedestal 8 to be set
It sets, and horizontally disposed with the length direction of 1 cross section top flange of girder steel model.
It is fixed that reaction frame crossbeam 5 passes through two the second spacing collars 7 up and down being arranged on reaction frame column 6.
Load loading system includes rigid press strip 2, jack 3, load transducer 4 and numerical value dynamometer 26；Rigid press strip 2
The center position of the upper surface of top flange is set, and the center position of rigid 2 upper surface of press strip, lotus is arranged in jack 3
Set sensor 4 is arranged in the center position of 3 upper surface of jack, under the upper surface of load transducer 4 and reaction frame crossbeam 5
Surface fitting setting, load transducer 4 are connected with numerical value dynamometer 26 by conducting wire 24.Rigid press strip 2, jack 3 and load
The center line of sensor 4 is on same vertical line.
It includes resistance strain gage 14, program-controlled statical strain indicator 22 and the first data processing computer 23 that strain value, which measures system,；
Resistance strain gage 14 be equipped with it is multiple, multiple resistance strain gages 14 are arranged at intervals on the center line in web height direction, and resistance is answered
Become piece 14 and program-controlled statical strain indicator 22 is connected by conducting wire 24, program-controlled statical strain indicator 22 is connected by conducting wire 24 for recording steel
First data processing computer 23 of 1 strain value of beam model.
It includes laser displacement sensor 10, chuck type pedestal 11, plain base magnetic base 13, signal that deformation values, which measure system,
Converter 25 and the second data processing computer 31；Laser displacement sensor 10, chuck type pedestal 11 and plain base magnetic base 13
Equipped with multiple, laser displacement sensor 10 respectively with one end of corresponding chuck type pedestal 11 or plain base magnetic base 13 one
End is connected, and the other end of chuck type pedestal 11 is connected with the edge of top flange or lower flange, plain base magnetic base
13 other end is connected with the lower surface of web or lower flange, and laser displacement sensor 10 is by conducting wire 24 and realizes measurement
The signal adapter 25 of reception with the conversion of data is connected, and signal adapter 25 is become by conducting wire 24 and record girder steel model 1
Second data processing computer 31 of shape value is connected.
Chuck type pedestal 11 is fixed after being inserted into 1 top flange of girder steel model or lower flange by fastening nut 12, flat
Formula magnetic base 13 is then by the magnetic-adsorption of itself on 1 surface of girder steel model.
The lower end of laser displacement sensor 10 is equipped with clump weight 30.
Horizontally laser displacement sensor 10 is equipped with clump weight 30, vertical laser position along the bottom in Laser emission direction
Displacement sensor 10 is equipped with clump weight 30 perpendicular to the outlet portion in Laser emission direction, and clump weight 30 is to guarantee girder steel model 1
The projecting direction of laser remains constant in deformation process, improves the precision of measurement, simple and easy to operate.
It further include the smooth surface reflection unit for making 1 precise alignment of girder steel model；Smooth surface reflection unit includes being vertically arranged
Vertical reflecting plate 15, horizontally disposed horizontal direction reflecting plate 21, weight 19 and spirit level 27, vertical reflecting plate 15 be rectangle
Plate, and there are two setting, two vertical reflecting plates 15 are connected with two reaction frame columns 6 respectively, and are symmetrical arranged, vertical to reflect
The lower end of plate 15 connects the weight 19 for keeping vertical reflecting plate 15 in a vertical state always by flexible steel cable 18, vertical anti-
It penetrates plate 15 and illustrates that vertical reflecting plate 15 is in a vertical state if the bubble in spirit level 27 is obviously placed in the middle equipped with spirit level 27；
Horizontal direction reflecting plate 21 is rectangular slab, and the upper surface of reaction frame pedestal 8 is arranged in horizontal direction reflecting plate 21, and is located at girder steel model
Four side midpoints of the underface of 1 span centre lower flange, horizontal direction reflecting plate 21 are provided with spirit level 27, if in spirit level 27
Blistering is obviously according between two parties, then horizontal direction reflecting plate 21 is in horizontality.
The lower end of vertical reflecting plate 15 is equipped with wirerope preformed hole 17, and it is reserved that the movable end of flexible steel cable 18 is pierced by wirerope
Hole 17, and be straightened by the fastening of U-shaped buckle 28.
Four right angles of horizontal direction reflecting plate 21 are provided with the fine tuning for adjusting 21 flatness of horizontal direction reflecting plate
Screw rod 20, horizontal direction reflecting plate 21 are connected with reaction frame pedestal 8 by finely tuning screw rod 20.
The first spacing collar 16, the fixed company of outer wall of the first spacing collar 16 and reaction frame column 6 are arranged on reaction frame column 6
It connects, is equipped with single hinge 29 in the side close to vertical reflecting plate 15 on the first spacing collar 16, close to first on vertical reflecting plate 15
The side of spacing collar 16 is equipped with another single hinge 29, and the first spacing collar 16 is connected with vertical reflecting plate 15 by two single hinges 29.
First spacing collar 16 includes two semicircular steel rings, and one end of two steel rings is hinged, and the other end is connected by fastener
It connects.
A kind of test method of girder steel test model measuring device, includes the following steps:
S1: the girder steel model 1 for being pasted with resistance strain gage 14 is arranged in reaction frame system in the form of simply supported beam
Portion；
S2: the height of positioning counter-force frame crossbeam 5；
S3: rigid press strip is arranged in installation load transducer 4, and fixed jack 3 between girder steel model 1 and jack 3
2；
S4: plain base magnetic base 13 and chuck type pedestal 11 are successively arranged in the point position of girder steel model 1, then will
Laser displacement sensor 10 is clamped on plain base magnetic base 13 and chuck type pedestal 11, and guarantees laser displacement sensor 10
It can rotate freely；
S5: vertical reflecting plate 15 is fixed on reaction frame column 6, passes through flexible steel cable 18 by installation smooth surface reflection unit
Weight 19 is lifted on to the lower end of vertical reflecting plate 15；
S6: successively by conducting wire 24 by resistance strain gage 14, program-controlled statical strain indicator 22 and the first data processing computer 23
Connection；Load transducer 4 is connected with numerical value dynamometer 26 by conducting wire 24；Laser displacement sensor 10, signal are converted
Device 25 and the second data processing computer 31 are sequentially connected by conducting wire 24；
S7: by load transducer and numerical value dynamometer 26, the accurate hierarchical loading of jack 3 is realized, laser displacement passes
Sensor 10 accurately measures the deformation values of girder steel model 1, passes through the second data processing computer 31 and analyzes and show deformation Value Data；Journey
Strain value number is analyzed by the first data processing computer 23 and shown to the strain value for controlling the girder steel model 1 that statical strain indicator 22 is surveyed
According to.
A kind of girder steel test model measuring device of the invention, solving former girder steel experimental study must try by large size
The drawbacks of equipment can just carry out is tested, save the cost, measurement accuracy is high, and work efficiency is high, greatly shortens the duration, and greatly improve
The precision of girder steel deflection measurement, girder steel payload values, strain value, deformation Value Data keep preferable same during guarantee test
Step property；The laser beam centrality that laser displacement sensor 10 is emitted is preferable, can remain horizontal or vertical state, be not required to
It goes ceaselessly to adjust during test, and reading data interval can be chosen by test requirements document；Smooth surface reflection unit can be to steel
Beam model 1 plays positioning and guarantees the precise alignment after the erection of girder steel model 1.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of girder steel test model measuring device, it is characterised in that: including girder steel model (1), support, reaction frame system, carry
Lotus loading system, strain value measurement system and deformation values measure system；
The support is vertically arranged on the ground, and the girder steel model (1) lies in a horizontal plane between the support, the girder steel mould
Type (1) is the i shaped steel being composed of top flange, web and lower flange, and the top flange and the lower flange are in up and down water
Level state setting, the web is vertically arranged between the top flange and the lower flange, and the top flange and it is described under
Be separately connected the upper and lower ends of the web in the middle part of the edge of a wing, the cross-sectional shape of the girder steel model (1) be it is I-shaped,
The load loading system for measuring girder steel model (1) load value is arranged in girder steel model (1) span centre
Top flange center,
The lower end of the reaction frame system fixes on the ground, and upper end is vertically arranged with girder steel model (1) the span center line,
And the both ends of reaction frame system upper end are symmetrically set centered on the center of girder steel model (1) the cross section top flange
It sets, the upper surface of the load loading system is bonded setting with the lower surface of reaction frame system upper end,
The strain value for measuring girder steel model (1) strain value measures system and is connected with the web,
The deformation values for measuring girder steel model (1) deformation values measure system and the top flange, the lower flange
Or the web is connected.
2. a kind of girder steel test model measuring device according to claim 1, it is characterised in that: the reaction frame system packet
Include reaction frame crossbeam (5), reaction frame column (6) and reaction frame pedestal (8)；The reaction frame pedestal (8) is fixedly connected with the ground,
There are two the reaction frame column (6) sets, the web height direction center line is arranged in two reaction frame columns (6)
Two sides, the lower end of two reaction frame columns (6) are symmetricly set on the both ends of the reaction frame pedestal (8), upper end vertically to
Upper extension is equipped with the adjustable reaction frame crossbeam (5) of placing height between two reaction frame column (6) upper ends, described anti-
Power frame crossbeam (5) is arranged in parallel with the reaction frame pedestal (8), and the length with girder steel model (1) the cross section top flange
Direction is horizontally disposed.
3. a kind of girder steel test model measuring device according to claim 2, it is characterised in that: the load loading system
Including rigid press strip (2), jack (3), load transducer (4) and numerical value dynamometer (26)；The rigidity press strip (2) is arranged
The center position of the upper surface of the top flange, center of jack (3) setting in described rigid press strip (2) upper surface
At position, center position of load transducer (4) setting in the jack (3) upper surface, the load transducer
(4) upper surface is bonded setting with the lower surface of the reaction frame crossbeam (5), and the load transducer (4) passes through conducting wire (24)
It is connected with numerical value dynamometer (26).
4. a kind of girder steel test model measuring device according to claim 3, it is characterised in that: strain value measurement system
System includes resistance strain gage (14), program-controlled statical strain indicator (22) and the first data processing computer (23)；The resistance strain gage
(14) be equipped with it is multiple, multiple resistance strain gages (14) are arranged at intervals on the center line in the web height direction, described
Resistance strain gage (14) connects the program-controlled statical strain indicator (22) by conducting wire (24), and the program-controlled statical strain indicator (22) is logical
It crosses conducting wire (24) and connects the first data processing computer (23) for recording girder steel model (1) strain value.
5. a kind of girder steel test model measuring device according to claim 4, it is characterised in that: deformation values measurement system
System includes laser displacement sensor (10), chuck type pedestal (11), plain base magnetic base (13), signal adapter (25) and the
Two data processing computers (31)；The laser displacement sensor (10), the chuck type pedestal (11) and the plain base magnetic force
Pedestal (13) be equipped with it is multiple, the laser displacement sensor (10) respectively with one end of the corresponding chuck type pedestal (11) or
One end of the plain base magnetic base (13) is connected, the other end of the chuck type pedestal (11) and the top flange or
The edge of the lower flange is connected, the other end and the web or the bottom wing of the plain base magnetic base (13)
The lower surface of edge is connected, the reception and conversion that the laser displacement sensor (10) passes through conducting wire (24) and realization measurement data
The signal adapter (25) be connected, the signal adapter (25) is by conducting wire (24) and recording the girder steel model
(1) the second data processing computer (31) of deformation values is connected.
6. a kind of girder steel test model measuring device according to claim 5, it is characterised in that: the laser displacement sensing
The lower end of device (10) is equipped with clump weight (30).
7. a kind of girder steel test model measuring device according to claim 6, it is characterised in that: further include described for making
The smooth surface reflection unit of girder steel model (1) precise alignment；The smooth surface reflection unit includes the vertical reflecting plate being vertically arranged
(15), horizontally disposed horizontal direction reflecting plate (21), weight (19) and spirit level (27), the vertical reflecting plate (15) are equipped with two
A, two vertical reflecting plates (15) are connected with two reaction frame columns (6) respectively, and are symmetrical arranged, described perpendicular
It is connected to the lower end of reflecting plate (15) by flexible steel cable (18) for making the vertical reflecting plate (15) always in vertical shape
The weight (19) of state, the vertical reflecting plate (15) are equipped with the spirit level (27)；The horizontal direction reflecting plate (21)
For rectangular slab, the horizontal direction reflecting plate (21) is arranged in the upper surface of the reaction frame pedestal (8), and is located at the girder steel mould
Four side midpoints of the underface of type (1) span centre lower flange, the horizontal direction reflecting plate (21) are provided with the spirit level
(27)。
8. a kind of girder steel test model measuring device according to claim 7, it is characterised in that: the horizontal direction reflecting plate
(21) four right angles are provided with the fine tuning screw rod (20) for adjusting horizontal direction reflecting plate (21) flatness, described
Horizontal direction reflecting plate (21) is connected with the reaction frame pedestal (8) by the fine tuning screw rod (20).
9. a kind of girder steel test model measuring device according to claim 7, it is characterised in that: the reaction frame column
(6) it is arranged on the first spacing collar (16), the outer wall of first spacing collar (16) and the reaction frame column (6) is fixed to be connected
It connects, is equipped with single hinge (29) in the side close to the vertical reflecting plate (15) on first spacing collar (16), it is described vertical anti-
Penetrate on plate (15) the side close to first spacing collar (16) be equipped with it is another it is single cut with scissors (29), first spacing collar (16) with
The vertical reflecting plate (15) is connected by two single hinges (29).
10. a kind of test method of girder steel test model measuring device according to any one of claims 8, which is characterized in that including as follows
Step:
S1: the girder steel model (1) that will be pasted with the resistance strain gage (14) is arranged described anti-in the form of simply supported beam
The middle part of power frame system；
S2: the height of the reaction frame crossbeam (5) is positioned；
S3: installing the load transducer (4), and the fixed jack (3), in the girder steel model (1) and described very heavy
The rigid press strip (2) is set between top (3)；
S4: successively the plain base magnetic base (13) and the chuck type pedestal (11) are arranged in the girder steel model (1)
Point position, then the laser displacement sensor (10) is clamped in the plain base magnetic base (13) and the chuck type
On pedestal (11), and guarantee that the laser displacement sensor (10) can rotate freely；
S5: installing the smooth surface reflection unit, and the vertical reflecting plate (15) is fixed on the reaction frame column (6), leads to
Cross the lower end that weight (19) is lifted on the vertical reflecting plate (15) by the flexible steel cable (18)；
S6: by the resistance strain gage (14), the program-controlled statical strain indicator (22) and the first data processing computer (23)
It is sequentially connected by conducting wire (24)；The load transducer (4) is connected with the numerical value dynamometer (26) by conducting wire (24)
It connects；The laser displacement sensor (10), the signal adapter (25) and the second data processing computer (31) are passed through
Conducting wire (24) is sequentially connected；
S7: by the load transducer (4) and the numerical value dynamometer (26), the accurate classification of the jack (3) is realized
Load, the laser displacement sensor (10) accurately measures the deformation values of the girder steel model (1), at second data
Manage computer (31) analysis and display deformation Value Data；It answers girder steel model (1) that the program-controlled statical strain indicator (22) is surveyed
Strain Value Data is analyzed by the first data processing computer (23) and shown to variate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611209452.6A CN106644323B (en) | 2016-12-23 | 2016-12-23 | A kind of girder steel test model measuring device and its test method |
Applications Claiming Priority (1)
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| CN106989921A (en) * | 2017-06-10 | 2017-07-28 | 武汉轻工大学 | Structural test reaction frame with early warning system |
| CN108896284A (en) * | 2018-05-15 | 2018-11-27 | 滁州职业技术学院 | A kind of steel structure member energy-dissipating and shock-absorbing performance evaluation system and appraisal procedure |
| CN110411356B (en) * | 2019-07-30 | 2021-11-02 | 安徽安凯汽车股份有限公司 | ECAS debugging auxiliary system for automobile |
| CN110702024B (en) * | 2019-10-14 | 2021-06-15 | 绍兴艾弗笛尼智能科技有限公司 | Device for detecting deflection of building structural member |
| CN111733758A (en) * | 2020-07-06 | 2020-10-02 | 中海石油（中国）有限公司天津分公司 | Offshore oil production platform, and experimental system and method for jacket platform load transfer |
| CN111707572A (en) * | 2020-07-10 | 2020-09-25 | 陕西航空电气有限责任公司 | Displacement calibration equipment |
| CN112649262A (en) * | 2020-12-07 | 2021-04-13 | 江苏科技大学 | Sample preparation and demolding device and sample preparation method for multiple groups of rock and soil samples |
| CN113432891B (en) * | 2021-06-29 | 2023-03-21 | 江铃汽车股份有限公司 | Device and method for testing static bending rigidity of cab of flat-head truck |
| CN115307897A (en) * | 2022-10-10 | 2022-11-08 | 安徽中亚钢结构工程有限公司 | Grog warehouse top room grid structure mechanical property test device and test method |
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| CN100541167C (en) * | 2006-04-30 | 2009-09-16 | 欧进萍 | Three-point bending beam type apparatus for big size material damping test |
| DE102009026002A1 (en) * | 2009-06-19 | 2010-12-23 | Braun, Matthias, Dipl.-Ing. | Device for detecting movement of settlement-sensitive component i.e. supporting structure, of bridge, has angle measuring sensor and displacement sensor for detecting position deviations of tension cable or tension wire |
| CN201628619U (en) * | 2010-02-25 | 2010-11-10 | 浙江吉利汽车研究院有限公司 | Bumper beam local rigidity measuring device |
| CN104215413B (en) * | 2014-09-30 | 2017-05-10 | 福州大学 | Long-term monitoring method applicable to deflection deformation of beam of historic building |
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