CN106192739A - A kind of vertical force measurement type bridge pad and force measuring method thereof - Google Patents
A kind of vertical force measurement type bridge pad and force measuring method thereof Download PDFInfo
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- CN106192739A CN106192739A CN201610776009.0A CN201610776009A CN106192739A CN 106192739 A CN106192739 A CN 106192739A CN 201610776009 A CN201610776009 A CN 201610776009A CN 106192739 A CN106192739 A CN 106192739A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
- E01D19/046—Spherical bearings
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A kind of vertical dynamometry bridge pad and force measuring method thereof, by measurement and the integral calibrating of local pressure, determine bearing entirety stress, simple in construction, size and weight increase are less, dynamometry is reliable, the vertical force measuring function of bridge pad can be realized, solve a bearing vertical dynamometry difficult problem, provide technical support for bridge monitoring.
Description
Technical field
The invention belongs to bridge structure or technical field of buildings, relate to a kind of bridge pad possessing vertical force measuring function and
Its force measuring method.
Background technology
Along with China's highway, railroad bridge construction increase year by year, the various load of bridge includes quiet, dynamic and impact load
Deng test and the monitoring of vertical load, the operation of bridge is had important practical significance.Realize the vertical counter-force of bridge pad i.e. bridge
The collection of Monitoring Data, can be that the health monitoring of bridge provides technical basis.
The bridge pad possessing vertical force measuring function at present is less, " a kind of multidirectional Dynamometric support of ball-type " (patent No.
CN102912772 A) realize dynamometry by the laterally disposed standard transducer of pressure-bearing wedge-shaped member at bearing；" a kind of vertical intelligence
Can Dynamometric support " (patent No. CN102032959 A) mainly select special shape parts to arrange resistance strain gage to realize dynamometry.On
Stating patent and all refer to spherical bearing, and dynamometry parts dynamometry thinking belongs to monoblock type dynamometry mode, structure member increases more,
Size is big, bearing is heavier.
" a kind of Simple bridge Dynamometric support " (patent No. CN203741696 U) is General Purpose Rubber pot bearing, passes through water
The change of silver post realizes force measuring function." a kind of Simple bridge Dynamometric support " (patent No. CN203741696 U) and " a kind of electrical measurement
Power seat structure " (patent No. CN202830748 U) be General Purpose Rubber pot bearing dynamometry, respectively by arrange mercury column and
Ergometer realizes force measuring function.
Summary of the invention
A kind of vertically dynamometry bridge pad and the force measuring method thereof that the present invention proposes, by measurement and the entirety of local pressure
Demarcating, determine bearing entirety stress, simple in construction, size and weight increase are less, and dynamometry is reliable, can realize the perpendicular of bridge pad
To force measuring function, solve a bearing vertical dynamometry difficult problem, provide technical support for bridge monitoring.
For realizing above-mentioned technical purpose, be the technical scheme is that a kind of vertical force measurement type bridge pad, including from upper
The upper base plate set gradually under to, middle seat board and lower seat board, the lower surface at middle seat board is provided with lower peripheral surface rustless steel slide plate, lower seat
The upper surface of plate is provided with the nonmetal slide plate of lower peripheral surface, lower peripheral surface rustless steel slide plate and lower peripheral surface nonmetal shaped as slide globulate and rotates
Friction pair, offers the peace for vertically placing force cell at the center of the nonmetal slide plate in the center of lower seat board and lower peripheral surface
Behaveing affectedly, force cell is fixed in installation cavity by connecting bolt, in the dynamometry stress point of force cell and friction pair
The heart overlaps.
The nonmetal slide plate in installation center, force cell top of the present invention, the nonmetal slide plate in center pastes with middle seat board
The lower surface of the lower peripheral surface rustless steel slide plate covered fits, between existing between the nonmetal slide plate in center and the nonmetal slide plate of lower peripheral surface
Gap
Installation cavity of the present invention is cylindrical cavity.
Offer, in lower seat board of the present invention, the long slot bore that force cell connecting line passes.
The force measuring method of a kind of vertical dynamometry bridge pad of the present invention comprises the following steps:
Step one, assembling verification: bearing is assembled complete, be placed on testing machine, bearing center and testing machine center pair
Standard, finder charge is 1.5 times of bearing vertical bearing capacity, after being loaded onto the 1% of design bearing capacity, checks force cell stress,
Confirm errorless after carry out precompressed；
Step 2, precompressed: bearing Vertical Design bearing capacity is loaded with the speed of continuous uniform, 3 times repeatedly；
Step 3, formally loading: finder charge is uniformly divided into 10 grades by zero to finder charge.With design bearing capacity during test
1% as initial load, then multistage loadings, and every grade of load voltage stabilizing recorded testing machine vertical load and force cell after 2 minutes
Load, until finder charge, voltage stabilizing unloaded after 3 minutes, and loading procedure is carried out continuously 3 times；
Step 4, drawing: load cells load takes the arithmetic mean of instantaneous value of every 3 sensor readings of one-level, draw sensor lotus
Carry testing machine load curve, and do the Fitting Calculation, determine the relational expression of testing machine load and sensor load；
Step 5, comparison: bearing in actual use, obtains the reading of force cell, the pass demarcated by step 4 in real time
It it is formula, it is judged that the vertical applied force situation of bearing.
Owing to have employed technique scheme, there is advantages that
1) seat board center under force cell is placed on bearing, and fixed by connecting bolt；Force cell connecting line
Connect through rest base and inside groove and external display device.A part in bearing vertical force is passed by the nonmetal slide plate in center
Being delivered to force cell, the vertical pressure that the nonmetal slide plate in the center that completes bears measures, and then determines dynamometry by vertical demarcation
Force acting on transducer and bearing entirety vertical applied force relation, so know the overall vertical applied force of bearing by the stress of sensor.
2) sensor plan being arranged on seat board center under bearing, under bearing, seat board is in stationary state, although ball
Face friction pair also rotates, but rotational frequency, amount of spin are little, and total to slide displacement little, can reduce bearing to greatest extent
The vertical applied force on sensor that moves affects.
3) bearing possesses normal usage function, i.e. bearing vertically carry, glide direction sliding, spacing direction spacing and vertical
Rotating function；It is to possess under the friction pair of sphere, geological process to subtract shock insulation function for upper friction pair.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 structural representation；
Fig. 2 is the A-A sectional view of the embodiment of the present invention 1 structure；
Fig. 3 is the embodiment of the present invention 2 structural representation；
Fig. 4 is the A-A sectional view of the embodiment of the present invention 2 structure；
Fig. 5 is the embodiment of the present invention 3 structural representation；
Fig. 6 is the A-A sectional view of the embodiment of the present invention 3 structure；
Fig. 7 is the embodiment of the present invention 4 structural representation；
Fig. 8 is the A-A sectional view of the embodiment of the present invention 4 structure；
Fig. 9 is the embodiment of the present invention 5 structural representation；
Figure 10 is the A-A sectional view of the embodiment of the present invention 5 structure；
Figure 11 is the embodiment of the present invention 6 structural representation；
Figure 12 is the A-A sectional view of the embodiment of the present invention 6 structure；
In figure: 1, upper base plate, 2, upper rustless steel slide plate, 3, upper nonmetal slide plate, 4, middle seat board, 5, lower peripheral surface rustless steel slide plate,
6, the nonmetal slide plate of lower peripheral surface, 7, lower seat board, 8, force cell, 9, the nonmetal slide plate in center, 10, connecting bolt, 11, guide
Rustless steel slide plate, 12, guide nonmetal slide plate, 13, limiting plate.
Detailed description of the invention
A kind of vertical force measurement type bridge pad, mainly includes upper base plate, middle seat board, lower seat board, force cell, rustless steel
The parts compositions such as slide plate, nonmetal slide plate and limiting plate.
Under described bearing, seat board top major part is sphere, draws out a cylinder in center and passes to place dynamometry
Sensor, has, in centre bottom, the round tube hole that fixing force cell connecting bolt passes, and center has force cell connecting line to connect
The through hole that passes of head, has, at rest base, the long slot bore that force cell connecting line passes simultaneously.
Described bearing force cell is placed on lower seat board center, and is fixed by connecting bolt.At force-measuring sensing
One piece of nonmetal slide plate in center is inlayed at device top, and the part in bearing vertical force is delivered to force-measuring sensing by center pad
Device, the vertical pressure that the nonmetal slide plate in the center that completes bears measures.Force cell connecting line through rest base and inside groove and
External display device connects, and completes bearing vertical force Value Data and obtains.
In described bearing, seat board top is plane or sphere, and bottom is sphere, and side is column type.
Described bearing upper base plate contains glide mirror (plane) or sphere, and the spacing direction of bearing arranges limiting component.
The vertical pressure-bearing of described bearing comprises 2 friction pairs altogether.Upper base plate and middle seat board have friction pair on 1 plane or sphere
(upper rustless steel slide plate+upper nonmetal slide plate), (lower peripheral surface rustless steel is sliding 1 sphere friction pair between middle seat board and lower seat board
The nonmetal slide plate in the nonmetal slide plate+center of plate+lower peripheral surface)；One-way movable support is provided with guiding friction pair and (guides rustless steel sliding
Plate+guide nonmetal slide plate).2 vertical pressure-bearing friction pairs realize vertical carrying, sliding and the rotating function of bearing；For upper
Friction pair is sphere friction pair, realizes subtracting shock insulation function under geological process；Guide friction pair realize spacing and guide sliding merit
Energy.
The vertical force measuring method of bearing, including:
Step one, being assembled by bearing complete, be placed on testing machine, bearing center is directed at testing machine center.Test lotus
Carry 1.5 times for bearing vertical bearing capacity.After being loaded onto the 1% of design bearing capacity, check force acting on transducer, confirm errorless laggard
Row precompressed.
Step 2, precompressed.Bearing Vertical Design bearing capacity is loaded with the speed of continuous uniform, 3 times repeatedly.
Step 3, formally load.Finder charge is uniformly divided into 10 grades by zero to finder charge.To design carrying during test
The 1% of power as initial load, then multistage loadings.Every grade of load voltage stabilizing recorded testing machine vertical load and sensor after 2 minutes
Load, until inspection load, voltage stabilizing unloaded after 3 minutes.Loading procedure is carried out continuously 3 times.
Step 4, every grade of sensor load take the arithmetic mean of instantaneous value of 3 sensor readings, draw sensor loading test
Machine load curve, and do the Fitting Calculation, determine the relational expression of testing machine load and sensor load.
The vertical rating test of bearing is completed by above-mentioned steps one to four.So in practical engineering project, obtain and pass
The reading of sensor, by the relational expression of above-mentioned demarcation, so that it may knows the vertical applied force situation of bearing, reaches dynamometry purpose.
Embodiment 1
Provide multidirectional activity vertical dynamometry ball shaped steel bearing, as shown in Figure 1, 2.It is mainly by upper base plate 1, upper rustless steel slide plate 2,
Upper nonmetal slide plate 3, middle seat board 4, lower peripheral surface rustless steel slide plate 5, the nonmetal slide plate of lower peripheral surface 6, lower seat board 7, force cell
8, the nonmetal slide plate in center 9, connecting bolt 10 parts such as grade form.Between upper base plate 1 and middle seat board 4 containing flat frictional pair (on
Rustless steel slide plate 2 and upper nonmetal slide plate 3 form)；Between middle seat board 4 and lower seat board 7, containing sphere friction pair, (lower peripheral surface is stainless
The nonmetal slide plate of the nonmetal slide plate of steel slide plate 5, lower peripheral surface 6 and center 9 forms), flat frictional pair and common group of sphere friction pair
Become the vertical pressure-bearing friction pair of bearing, possess vertical carrying, longitudinal and transverse bridge to slip, vertical rotating function.
Under bearing, seat board 7 top major part is sphere, draws out a cylinder in center to place force-measuring sensing
Device 8, has, in centre bottom, the round tube hole that affixed force cell 8 connecting bolt 10 passes, and there is force cell 8 connecting line at center
Through hole that joint passes and the long slot bore that connecting line passes.Force cell 8 is placed on the center of lower seat board 7, and passes through
Connecting bolt 10 is fixed.One piece of nonmetal slide plate in center 9, the part in bearing vertical force is inlayed at force cell 8 top
Being delivered to force cell 8 by the nonmetal slide plate in center 9, the vertical pressure that the nonmetal slide plate in the center that completes 9 is born measures.
By vertical rating test, determine that 9 stress of the nonmetal slide plate in center (i.e. force cell 8 measures force value) are erected with bearing entirety
To stress relation, know the overall vertical applied force situation of bearing eventually through counter the pushing away of the stress of force cell 8, so that bearing
Possesses vertical force measuring function.
The multidirectional activity vertical dynamometry ball shaped steel bearing of the present embodiment under normal circumstances, can realize vertically carrying, level
Vertical bridge, to, the slip of direction across bridge and bearing vertical rotating function, possesses vertical survey during bearing whole service simultaneously all the time
Power function.
Embodiment 2
Provide one-way movable vertical dynamometry ball shaped steel bearing, as shown in Figure 3,4.It is mainly by upper base plate 1, upper rustless steel slide plate 2,
Upper nonmetal slide plate 3, middle seat board 4, lower peripheral surface rustless steel slide plate 5, the nonmetal slide plate of lower peripheral surface 6, lower seat board 7, guide rustless steel
Slide plate 11, guides nonmetal slide plate 12, force cell 8, the nonmetal slide plate in center 9, and connecting bolt 10 parts such as grade form.The seat of honour
Containing flat frictional pair (upper rustless steel slide plate 2 and upper nonmetal slide plate 3 form) between plate 1 and middle seat board 4；Middle seat board 4 with under
Containing sphere friction pair (lower peripheral surface rustless steel slide plate 5, the nonmetal slide plate of the nonmetal slide plate of lower peripheral surface 6 and center 9 between seat board 7
Composition), lower seat board 7 and upper base plate 1 have guiding friction pair (by guiding rustless steel slide plate 11 and guiding non-gold in both sides, spacing direction
Belong to slide plate 12 to form).Flat frictional pair and sphere friction pair collectively constitute the vertical pressure-bearing friction pair of bearing, possess and vertically hold
Carry, main displacement direction is slided, vertical rotating function；Guide friction pair and play bearing spacing and glide direction sliding in spacing direction
Function.
Under bearing, seat board 7 top major part is sphere, draws out a cylinder in center to place force-measuring sensing
Device 8, has, in centre bottom, the round tube hole that affixed force cell 8 connecting bolt 10 passes, and there is force cell 8 connecting line at center
Through hole that joint passes and the long slot bore that connecting line passes.Force cell 8 is placed on the center of lower seat board 7, and passes through
Connecting bolt 10 is fixed.One piece of nonmetal slide plate in center 9, the part in bearing vertical force is inlayed at force cell 8 top
Being delivered to force cell 8 by the nonmetal slide plate in center 9, the vertical pressure that the nonmetal slide plate in the center that completes 9 is born measures.
By vertical rating test, determine that 9 stress of the nonmetal slide plate in center (i.e. force cell 8 measures force value) are erected with bearing entirety
To stress relation, know the overall vertical applied force situation of bearing eventually through counter the pushing away of the stress of force cell 8, so that bearing
Possesses vertical force measuring function.
The one-way movable vertical dynamometry ball shaped steel bearing of the present embodiment under normal circumstances, can realize vertically carrying, the status of a sovereign
Shift to that sliding, spacing direction be spacing and bearing vertical rotating function, possess vertical simultaneously during bearing whole service all the time
Force measuring function.
Embodiment 3
Provide fixing vertical dynamometry ball shaped steel bearing, as shown in Figure 5,6.It is mainly by upper base plate 1, and upper rustless steel slide plate 2 is upper non-
Metal slider 3, middle seat board 4, lower peripheral surface rustless steel slide plate 5, the nonmetal slide plate of lower peripheral surface 6, lower seat board 7, guide rustless steel slide plate
11, guide nonmetal slide plate 12, force cell 8, the nonmetal slide plate in center 9, connecting bolt 10 parts such as grade form.Upper base plate 1
And containing flat frictional pair (upper rustless steel slide plate 2 and upper nonmetal slide plate 3 form) between middle seat board 4；Middle seat board 4 and lower seat board
Containing sphere friction pair (lower peripheral surface rustless steel slide plate 5,9 groups of the nonmetal slide plate of the nonmetal slide plate of lower peripheral surface 6 and center between 7
Become)；Flat frictional pair and sphere friction pair collectively constitute the vertical pressure-bearing friction pair of bearing, possess vertical carrying and vertical rotating
Function.The basin ring of upper base plate is that small-gap suture is arranged with the boss of lower seat board, plays bearing in the spacing i.e. level of surrounding to fixing merit
Energy.
Under bearing, seat board 7 top major part is sphere, draws out a cylinder in center to place force-measuring sensing
Device 8, has, in centre bottom, the round tube hole that affixed force cell 8 connecting bolt 10 passes, and there is force cell 8 connecting line at center
Through hole that joint passes and the long slot bore that connecting line passes.Force cell 8 is placed on the center of lower seat board 7, and passes through
Connecting bolt 10 is fixed.One piece of nonmetal slide plate in center 9, the part in bearing vertical force is inlayed at force cell 8 top
Being delivered to force cell 8 by the nonmetal slide plate in center 9, the vertical pressure that the nonmetal slide plate in the center that completes 9 is born measures.
By vertical rating test, determine that 9 stress of the nonmetal slide plate in center (i.e. force cell 8 measures force value) are erected with bearing entirety
To stress relation, know the overall vertical applied force situation of bearing eventually through counter the pushing away of the stress of force cell 8, so that bearing
Possesses vertical force measuring function.
The fixing vertical dynamometry ball shaped steel bearing of the present embodiment under normal circumstances, can realize vertically carrying, level is to limit
Position and bearing vertical rotating function, possess vertical force measuring function during bearing whole service simultaneously all the time.
Embodiment 4
Provide multidirectional activity vertical force measurement type hyperboloid spheroidal bearer of shock absorption and insulation, as shown in Figure 7,8.It is mainly by upper base plate 1, on
Rustless steel slide plate 2, upper nonmetal slide plate 3, middle seat board 4, lower peripheral surface rustless steel slide plate 5, the nonmetal slide plate of lower peripheral surface 6, lower seat board
7, force cell 8, the nonmetal slide plate in center 9, connecting bolt 10 parts such as grade form.Containing upper between upper base plate 1 and middle seat board 4
Sphere friction pair (upper rustless steel slide plate 2 and upper nonmetal slide plate 3 form)；Rub containing lower peripheral surface between middle seat board 4 and lower seat board 7
Wipe secondary (lower peripheral surface rustless steel slide plate 5, the nonmetal slide plate of the nonmetal slide plate of lower peripheral surface 6 and center 9 form), two upper and lower spheres
Friction pair collectively constitutes the vertical pressure-bearing friction pair of bearing, possesses vertical carrying, longitudinal and transverse bridge to slip, vertical rotating function.Ground
During shake, bearing realizes horizontal reciprocating by bispherical anabolic effect and slides, during reciprocatingly sliding, and rubbing by sliding surface
Wipe resistance dissipation seismic energy, and extending structure natural vibration period, reach damping and isolation effect；After earthquake, superstructure deadweight shape
Become restoring force, make bearing reset.
Under bearing, seat board 7 top major part is sphere, draws out a cylinder in center to place force-measuring sensing
Device 8, has, in centre bottom, the round tube hole that affixed force cell 8 connecting bolt 10 passes, and there is force cell 8 connecting line at center
Through hole that joint passes and the long slot bore that connecting line passes.Force cell 8 is placed on the center of lower seat board 7, and passes through
Connecting bolt 10 is fixed.One piece of nonmetal slide plate in center 9, the part in bearing vertical force is inlayed at force cell 8 top
Being delivered to force cell 8 by the nonmetal slide plate in center 9, the vertical pressure that the nonmetal slide plate in the center that completes 9 is born measures.
By vertical rating test, determine that 9 stress of the nonmetal slide plate in center (i.e. force cell 8 measures force value) are erected with bearing entirety
To stress relation, know the overall vertical applied force situation of bearing eventually through counter the pushing away of the stress of force cell 8, so that bearing
Possesses vertical force measuring function.
The multidirectional activity vertical force measurement type hyperboloid spheroidal bearer of shock absorption and insulation of the present embodiment under normal circumstances, can realize erecting
Bridge is indulged to, the slip of direction across bridge, bearing vertical rotating function to carrying, level；After realizing when earthquake subtracting shock insulation and shaking automatically
Reset function；During bearing whole service, possesses vertical force measuring function all the time simultaneously.
Embodiment 5
Provide one-way movable vertical force measurement type hyperboloid spheroidal bearer of shock absorption and insulation, such as Fig. 9, shown in 10.It is mainly by upper base plate 1,
Upper rustless steel slide plate 2, upper nonmetal slide plate 3, middle seat board 4, lower peripheral surface rustless steel slide plate 5, the nonmetal slide plate of lower peripheral surface 6, lower seat
Plate 7, guides rustless steel slide plate 11, guides nonmetal slide plate 12, limiting plate 13, force cell 8, the nonmetal slide plate in center 9, connects
Connecting bolt 10 parts such as grade form.Containing upper sphere friction pair (upper rustless steel slide plate 2 and upper non-gold between upper base plate 1 and middle seat board 4
Belong to slide plate 3 to form)；Between middle seat board 4 and lower seat board 7, containing lower peripheral surface friction pair, (lower peripheral surface rustless steel slide plate 5, lower peripheral surface are non-
The nonmetal slide plate of metal slider 6 and center 9 forms), lower seat board 7 and upper base plate 1 have in both sides, spacing direction guiding friction pair (by
Guide rustless steel slide plate 11 and the nonmetal slide plate 12 of guiding forms).Two sphere friction pairs collectively constitute the vertical pressure-bearing of bearing
Friction pair, possesses vertical carrying, main displacement direction slip, vertical rotating function；Guide friction pair and play bearing in spacing direction
Spacing and glide direction sliding function.During earthquake, limiting plate is cut off, and bearing realizes horizontal reciprocating by bispherical anabolic effect
Slide, during reciprocatingly sliding, by the frictional resistance dissipation seismic energy of sliding surface, and extending structure natural vibration period, reach
To damping and isolation effect；After earthquake, superstructure, from reforming restoring force, makes bearing reset.
Under bearing, seat board 7 top major part is sphere, draws out a cylinder in center to place force-measuring sensing
Device 8, has, in centre bottom, the round tube hole that affixed force cell 8 connecting bolt 10 passes, and there is force cell 8 connecting line at center
Through hole that joint passes and the long slot bore that connecting line passes.Force cell 8 is placed on the center of lower seat board 7, and passes through
Connecting bolt 10 is fixed.One piece of nonmetal slide plate in center 9, the part in bearing vertical force is inlayed at force cell 8 top
Being delivered to force cell 8 by the nonmetal slide plate in center 9, the vertical pressure that the nonmetal slide plate in the center that completes 9 is born measures.
By vertical rating test, determine that 9 stress of the nonmetal slide plate in center (i.e. force cell 8 measures force value) are erected with bearing entirety
To stress relation, know the overall vertical applied force situation of bearing eventually through counter the pushing away of the stress of force cell 8, so that bearing
Possesses vertical force measuring function.
The one-way movable vertical force measurement type hyperboloid spheroidal bearer of shock absorption and insulation of the present embodiment under normal circumstances, can realize erecting
Shift to carrying, the status of a sovereign that sliding, spacing direction be spacing and bearing vertical rotating function；After realizing when earthquake subtracting shock insulation and shaking certainly
Dynamic reset function；During bearing whole service, possesses vertical force measuring function all the time simultaneously.
Embodiment 6
Provide fixing vertical force measurement type hyperboloid spheroidal bearer of shock absorption and insulation, as shown in Figure 11,12.It is mainly by upper base plate 1, on not
Rust steel slide plate 2, upper nonmetal slide plate 3, middle seat board 4, lower peripheral surface rustless steel slide plate 5, the nonmetal slide plate of lower peripheral surface 6, lower seat board 7,
Guide rustless steel slide plate 11, guide nonmetal slide plate 12, limiting plate 13, force cell 8, the nonmetal slide plate in center 9, connect spiral shell
Bolt 10 parts such as grade form.Containing upper sphere friction pair (upper rustless steel slide plate 2 and upper nonmetal cunning between upper base plate 1 and middle seat board 4
Plate 3 forms)；Between middle seat board 4 and lower seat board 7, containing lower peripheral surface friction pair, (lower peripheral surface rustless steel slide plate 5, lower peripheral surface are nonmetal
The nonmetal slide plate of slide plate 6 and center 9 forms), lower seat board 7 and upper base plate 1 have guiding friction pair (by guiding in both sides, spacing direction
Rustless steel slide plate 11 and the nonmetal slide plate 12 of guiding form).Two sphere friction pairs collectively constitute the vertical pressure-bearing friction of bearing
Pair, possesses vertical carrying, vertical rotating function；Guide friction pair and play bearing at spacing direction limit function.During earthquake, spacing
Plate is cut off, and bearing realizes horizontal reciprocating by bispherical anabolic effect and slides, during reciprocatingly sliding, by sliding surface
Frictional resistance dissipation seismic energy, and extending structure natural vibration period, reach damping and isolation effect；After earthquake, superstructure is conducted oneself with dignity
Form restoring force, make bearing reset.
Under bearing, seat board 7 top major part is sphere, draws out a cylinder in center to place force-measuring sensing
Device 8, has, in centre bottom, the round tube hole that affixed force cell 8 connecting bolt 10 passes, and there is force cell 8 connecting line at center
Through hole that joint passes and the long slot bore that connecting line passes.Force cell 8 is placed on the center of lower seat board 7, and passes through
Connecting bolt 10 is fixed.One piece of nonmetal slide plate in center 9, the part in bearing vertical force is inlayed at force cell 8 top
Being delivered to force cell 8 by the nonmetal slide plate in center 9, the vertical pressure that the nonmetal slide plate in the center that completes 9 is born measures.
By vertical rating test, determine that 9 stress of the nonmetal slide plate in center (i.e. force cell 8 measures force value) are erected with bearing entirety
To stress relation, know the overall vertical applied force situation of bearing eventually through counter the pushing away of the stress of force cell 8, so that bearing
Possesses vertical force measuring function.
The fixing vertical force measurement type hyperboloid spheroidal bearer of shock absorption and insulation of the present embodiment under normal circumstances, can realize vertically holding
Load, level are to spacing and bearing vertical rotating function；Realize when earthquake subtracting auto-reset function after shock insulation and shake；Propping up simultaneously
All the time vertical force measuring function is possessed during seat whole service.
Claims (6)
1. a vertical force measurement type bridge pad, including the upper base plate (1) set gradually from top to bottom, middle seat board (4) and lower seat
Plate (7), the lower surface at middle seat board (4) is provided with lower peripheral surface rustless steel slide plate (5), and the upper surface of lower seat board (7) is provided with lower peripheral surface
It is secondary that nonmetal slide plate (6), lower peripheral surface rustless steel slide plate (5) and the nonmetal slide plate of lower peripheral surface (6) form spherical pivoting friction, and it is special
Levy and be: offer for vertically placing force-measuring sensing at the center at the center of lower seat board (7) and the nonmetal slide plate of lower peripheral surface (6)
The installation cavity of device (8), force cell (8) is fixed in installation cavity by connecting bolt (10), the dynamometry of force cell (8)
Stress point and the center superposition of friction pair.
2. a kind of vertical force measurement type bridge pad as claimed in claim 1, it is characterised in that: described force cell (8)
The nonmetal slide plate in installation center, top (9), the lower peripheral surface rustless steel slide plate that the nonmetal slide plate in center (9) and middle seat board (4) paste
(5) lower surface fits, and there is gap between the nonmetal slide plate in center (9) and the nonmetal slide plate of lower peripheral surface (6).
3. a kind of vertical force measurement type bridge pad as claimed in claim 1, it is characterised in that: described installation cavity is column type
Cavity.
4. a kind of vertical force measurement type bridge pad as claimed in claim 1, it is characterised in that: open in described lower seat board (7)
It is provided with the long slot bore that force cell connecting line passes.
The force measuring method of a kind of vertical force measurement type bridge pad the most as claimed in claim 1, it is characterised in that: include following step
Rapid:
Step one, assembling verification: bearing is assembled complete, be placed on testing machine, bearing center and testing machine center pair
Standard, finder charge is 1.5 times of bearing vertical bearing capacity, after being loaded onto the 1% of design bearing capacity, checks force cell stress,
Confirm errorless after carry out precompressed；
Step 2, precompressed: bearing Vertical Design bearing capacity is loaded with the speed of continuous uniform, 3 times repeatedly；
Step 3, formally loading: finder charge is uniformly divided into 10 grades by zero to finder charge.
6. using the 1% of design bearing capacity as initial load during test, then multistage loadings, record after every grade of load voltage stabilizing 2 minutes
Testing machine vertical load and force cell load, until finder charge, voltage stabilizing unloaded after 3 minutes, and loading procedure is carried out continuously 3
Secondary；
Step 4, drawing: load cells load takes the arithmetic mean of instantaneous value of every 3 sensor readings of one-level, draw sensor lotus
Carry testing machine load curve, and do the Fitting Calculation, determine the relational expression of testing machine load and sensor load；
Step 5, comparison: bearing in actual use, obtains the reading of force cell, the pass demarcated by step 4 in real time
It it is formula, it is judged that the overall vertical applied force situation of bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776009.0A CN106192739B (en) | 2016-08-30 | 2016-08-30 | A kind of vertical force measurement type bridge pad and its force measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776009.0A CN106192739B (en) | 2016-08-30 | 2016-08-30 | A kind of vertical force measurement type bridge pad and its force measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106192739A true CN106192739A (en) | 2016-12-07 |
| CN106192739B CN106192739B (en) | 2018-07-06 |
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| CN112146803B (en) * | 2020-10-20 | 2022-06-10 | 中国铁路设计集团有限公司 | Force measuring method for high-precision vertical force measurement of transversely movable or fixed spherical support |
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| CN106192739B (en) | 2018-07-06 |
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