CN106644330A - Transformer substation composite material bushing anti-seismic limit bearing capacity parameter calibration method - Google Patents

Transformer substation composite material bushing anti-seismic limit bearing capacity parameter calibration method Download PDF

Info

Publication number
CN106644330A
CN106644330A CN201510725097.7A CN201510725097A CN106644330A CN 106644330 A CN106644330 A CN 106644330A CN 201510725097 A CN201510725097 A CN 201510725097A CN 106644330 A CN106644330 A CN 106644330A
Authority
CN
China
Prior art keywords
composite sleeve
flange
test specimen
composite
test
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.)
Granted
Application number
CN201510725097.7A
Other languages
Chinese (zh)
Other versions
CN106644330B (en
Inventor
李圣
卢智成
程永锋
朱祝兵
钟珉
韩嵘
孙宇晗
刘振林
张谦
林森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
State Grid Shanxi Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
State Grid Shanxi Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, China Electric Power Research Institute Co Ltd CEPRI, State Grid Shanxi Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201510725097.7A priority Critical patent/CN106644330B/en
Publication of CN106644330A publication Critical patent/CN106644330A/en
Application granted granted Critical
Publication of CN106644330B publication Critical patent/CN106644330B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00Vibration-testing of structures; Shock-testing of structures
    • G01M7/02Vibration-testing by means of a shake table
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/20Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001Type of application of the stress
    • G01N2203/0005Repeated or cyclic
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0023Bending
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058Kind of property studied
    • G01N2203/0069Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0075Strain-stress relations or elastic constants

Abstract

The invention relates to a transformer substation composite material bushing anti-seismic limit bearing capacity parameter calibration method comprising the steps that seismic simulation vibration table testing and quasi-static bending resistance testing are performed on the first batch of products of composite material bushings so that anti-seismic limit bearing capacity Mse and anti-bending limit bearing capacity Mst are respectively obtained; the conversion coefficient r is calculated through the anti-seismic limit bearing capacity Mse and the anti-bending limit bearing capacity Mst; quasi-static bending resistance testing is performed on the products of the composite material bushings apart from the first batch of products so that anti-bending limit bearing capacity Mst' is obtained; and anti-seismic limit bearing capacity Mse' is obtained through the conversion coefficient r. The technical scheme has practical importance on anti-seismic performance detection of the composite material bushings.

Description

A kind of scaling method of transformer station's composite sleeve antidetonation ultimate bearing force parameter
Technical field:
The present invention relates to high voltage electric equipment anti-seismic performance technical field of measurement and test, is more particularly to a kind of power transformation The scaling method of composite sleeve of standing antidetonation ultimate bearing force parameter.
Background technology:
Traditional converting station high voltage electrical apparatus sleeve pipe adopt electroceramics material, electroporcelain material because of fragility attribute, Easily damage in seismic events.Composite sleeve is the substitute products of porcelain bushing, and it passes through resin Base glass fibre composite sleeve and metal end tool are formed by epoxy resin colloid gluing.Due to glass The excellent mechanical performances of fibrous composite, composite sleeve is considered to have good anti-seismic performance And be that highlight lines area transformer station preferentially selects.
In earthquake resistant engineering design, ultimate bearing capacity of the component under earthquake load is structural system antidetonation energy The important parameter that power is evaluated.However, as the composite sleeve of electrical equipment important feature component, its The scaling method of antidetonation ultimate bearing capacity is but more short of, and is embodied in following aspect
(1) in shaking-table test, it is difficult to carry out the load carrying capacity test under limit state.
In the seismographic station test of composite sleeve, often to set the vibration amplitude of grade as target, examine Whether nuclear equipment can bear associated ratings earthquake load.However, the demarcation of ultimate bearing capacity, needs Make examination equipment reach damage critical state.By conventional test method, general composite sleeve is set It is standby to pass through increase and be input into the method for amplitude to make tested equipment reach bearing capacity critical state, and for Other equipment component, is often limited by earthquake simulation bumper capacity of equipment and cannot be carried out damage limit Test under state.In this case, increase ancillary test device, realize that ultimate bearing capacity is tested and marked It is calmly simple to have great importance.
(2) single test costs dearly, and dependence test project is difficult to promote.
Due to the testing expenses of single earthquake simulation bumper costly, while correlation test equipment popularity It is low, only satisfy the requirements in the professional shock test research unit in part, general electrical equipment manufacturer and Detection unit does not possess correlation test condition.In this case, earthquake simulation bumper test method is only capable of Adopt in type approval test, it is difficult to promote in sampling observation link.The easy test method of design carries out antidetonation Ultimate bearing capacity is tested, and the anti-seismic performance detection to composite sleeve has the importance of reality.
The content of the invention:
It is an object of the invention to provide a kind of transformer station's composite sleeve antidetonation ultimate bearing force parameter Scaling method, orderliness is clear, workable.
For achieving the above object, the present invention is employed the following technical solutions:A kind of transformer station's composite sleeve The scaling method of antidetonation ultimate bearing force parameter, including:
First product to composite sleeve, carries out respectively the test of earthquake simulation bumper and Quintic system resists Curved test, respectively obtains antidetonation ultimate bearing capacity Mse and ultimate flexural strength Mst;
Conversion coefficient r is calculated by the antidetonation ultimate bearing capacity Mse and ultimate flexural strength Mst;
For the non-first batch products of the composite sleeve, Quintic system beam test is carried out, resisted Curved ultimate bearing capacity Mst ';Antidetonation ultimate bearing capacity Mse ' is obtained by the conversion coefficient r.
The conversion coefficient is determined by following formula:
R=Mse/Mst.
The device of the earthquake simulation bumper test includes being arranged on the composite sleeve test specimen top The counterweight frame in portion and the base for being arranged on the composite sleeve test specimen bottom;In the composite set Pipe test specimen is provided with strain gauge and accelerometer;It is provided with the table top for placing described device and on counterweight frame Accelerometer.
The top and bottom of the composite sleeve test specimen is respectively equipped with flange;The flange passes through respectively Bolt is connected with the base and counterweight frame.
The strain gauge is symmetrically axially separately positioned on outside the flange in the bottom of the composite sleeve test specimen Survey in side and the flange in the bottom;The strain gauge is axially disposed within the composite sleeve test specimen Portion, near outside, the composite sleeve test piece lower part of the top flange, near the bottom The middle part outside of the outside of flange and the composite sleeve test specimen;The accelerometer is arranged on described Composite sleeve height of specimen 1/4,1/2 sum 3/4 outside, the middle part of the counterweight frame, The outside of the top flange, the outside of the flange in the bottom and the composite sleeve test piece lower part, Near the outside of the flange in the bottom.
In the earthquake simulation bumper process of the test, earthquake load, the seismic wave of input are applied step by step To recommend time-histories ripple or selecting artificial time history's ripple or practically seismic wave by seismic safety evaluation for engineering sites report; Input acceleration peak value increases step by step earthquake load from 0.1g by amplification of 0.1g, until described multiple Condensation material sleeve pipe test specimen reaches the bearing capacity limit and damages;
Judge the composite sleeve in the earthquake simulation bumper is tested according to following methods The bearing capacity limit of test specimen:Monitor strain of the composite sleeve test specimen on the outside of its flange in the bottom Time-histories, in the not up to composite sleeve test specimen limit of bearing capacity, the song of the strain time history Line is symmetrical;When the composite sleeve test specimen limit is reached, the curve generation of the strain time history is abnormal Become;The operating mode when curve for choosing the strain time history is distorted is the operating mode that the bearing capacity limit occurs; The peak value for taking the period of right time seismic response that distorts under the operating mode is the foundation that limit of bearing capacity is calculated.
Remember that the counterweight frame is m1 with weight mass, flange in the bottom distance is h1 described in counterweight frame centre-to-centre spacing, The counterweight frame center bearing capacity limit acceleration peak value of response is taken for a1;Note composite sleeve test specimen Upper segment quality be m2, the quality that the quality of middle part is m3-m5 and lower section be m6;Institute It is down to 2 times of the top flange height by the top of top flange to state upper segment;The bottom Section is upwards to 2 times of the flange in the bottom height by the bottom of flange in the bottom;The middle part be except Go the upper segment and lower section;The middle part is equally divided into into three sections, quality from top to bottom is successively It is designated as m3, m4 and m5;The acceleration of the composite sleeve test specimen each section of quality from top to bottom Peak value corresponds to respectively a2-a6;The Ultimate Bearing Capacity Mse of the composite sleeve test specimen, leads to Cross following formula determination:
The device of the Quintic system beam test includes being arranged on the composite sleeve test specimen bottom Base and the actuator being connected with the composite sleeve test specimen by loading end fixing device;Described Composite sleeve test specimen is provided with strain gauge;Displacement Meters are set in loading end position, for measuring The horizontal displacement of loading end.
The bottom of the composite sleeve test specimen is provided with flange;The flange is by bolt and the base Connection;The loading end fixing device be fixture, including for connect the composite sleeve test specimen and Actuator can pretension anchor ear;The actuator applies thrust to its cantilever end;The strain gauge is symmetrical Axially it is separately positioned in the flange in the bottom of composite sleeve test specimen outside and the flange in the bottom Survey;The strain gauge is axially disposed within the composite sleeve test piece upper part, near the top flange Outside, the composite sleeve test piece lower part, near the outside of the flange in the bottom and described compound The middle part outside of material bushing test specimen.
During the Quintic system beam test, its cantilever is further applied load by the actuator, by Displacement controlled loading amount, the rate of application of the load is 5mm/min, by unidirectional loading or reciprocal Loading, until the test specimen is destroyed, and the test specimen when destroying its depression of bearing force be not destroy When maximum load capacity 80%;When the reciprocal loading is carried out, each rank displacement increment is 10mm;
Judge as follows in the Quintic system beam test, the composite sleeve test specimen is carried Capacity limit:The loading end movement d- loading force F curves that the Quintic system beam test is obtained are taken, it is described Loading end movement d- loading force F curves are made up of linear rise section, plasticity ascent stage and descending branch, line taking Property segment endpoint be limit of bearing capacity point, remember that load deflection now is dy, loading force is Fy;And Ultimate bearing force value Mst to composite bushing in Quintic system beam test, is determined by following formula:
Mst=Fy*h
Wherein, h is the distance of loading end to flange in the bottom.
With immediate prior art ratio, the present invention provide technical scheme there is following excellent effect
1st, technical solution of the present invention reduces seismographic station pilot project to non-first batch products, is ensureing knot Process of the test is simplified on the premise of fruit effectiveness;
2nd, technical solution of the present invention saves testing expenses;
3rd, technical solution of the present invention can not only be adopted in type approval test, also can be promoted in sampling observation link;
4th, technical solution of the present invention is choosing the composite sleeve energy of more preferable performance, with important meaning Justice;
5th, technical solution of the present invention reduces spoilage of the composite sleeve in earthquake.
Description of the drawings
Fig. 1 is embodiment of the present invention single-unit composite sleeve seismographic station assay device structural representation;
Fig. 2 is the understructure top view of the embodiment of the present invention;
Fig. 3 is the understructure front view of the embodiment of the present invention;
Fig. 4 is embodiment of the present invention counterweight mount structure front view;
Fig. 5 is embodiment of the present invention counterweight mount structure upward view;
Fig. 6 is not reached the limit of under state for the embodiment of the present invention, foil gauge curve chart;
Fig. 7 is foil gauge curve chart under the limit state of the embodiment of the present invention;
Fig. 8 is foil gauge curve chart schematic diagram under the limit state of the embodiment of the present invention;
Fig. 9 is composite bushing Ultimate Strength schematic diagram in the seismographic station test of the embodiment of the present invention;
Figure 10 illustrates for the compound discussion sleeve pipe Quintic system beam test device of single-unit of the embodiment of the present invention Figure;
Figure 11 is the loading end movement d- loading force F curve synoptic diagrams of the embodiment of the present invention;
Wherein, 1- counterweights frame, 2- composite sleeve test specimens, 3- bases, 4- installing holes, 5- holes for hoist.
Specific embodiment
With reference to embodiment, the invention will be described in further detail.
Embodiment 1:
The invention of this example provides a kind of demarcation of transformer station's composite sleeve antidetonation ultimate bearing force parameter Method, including:
1) to the first product of the composite sleeve of certain specification, earthquake simulation bumper examination is carried out respectively Test and Quintic system beam test, respectively obtain antidetonation ultimate bearing capacity Mse and ultimate flexural strength Mst, Calculate conversion coefficient
R=Mse/Mst
2) for non-first batch of composite sleeve product of certain specification, you can only carry out Quintic system bending resistance Test, by conversion coefficient antidetonation ultimate bearing capacity Mse '=r*Mst ' is obtained.
Now the foundation of above-mentioned bearing capacity scaling method is illustrated.Transformer station's composite wood under earthquake load The failure mode of material sleeve pipe is generally bending failure pattern, shows as connection of the sleeve pipe between metal flange Destruction, the destruction of composite sleeve or ring flange are in the destruction of flange cylinder.Though it should be noted that So failure mode is all bending failure pattern, and earthquake load is dynamic impact load because of it, with static(al) lotus It is loaded with difference.So the ultimate bearing capacity Mse obtained in the test of earthquake simulation bumper and pseudo-static experimental In the ultimate bearing capacity Mst that obtains it is variant.And in the different batches of product of specification of the same race, because it is adopted Identical structure and material, the difference trend between Mse and Mst is consistent.So, demarcating After r=Mse/Mst, for the sampling observation of different batches of product, modified quasi Static Test Results can be passed through Mode obtain the antidetonation ultimate bearing capacity of composite sleeve.
Single-unit composite sleeve seismographic station assay device
Assay device is as shown in figure 1, its main body is by composite sleeve test specimen 2, counterweight frame 1 and connection Base 3 is constituted, and is bolted between each several part;Test measurement device includes strain gauge and acceleration Meter.
Connect base 3 is used for connection examination vibration table and test specimen, such as Fig. 2-Fig. 3, its bottom upper and lower end face And ribbed stiffener thickness of slab is more than 2cm, so as to connect base has larger rigidity;Composite sleeve test specimen 2 flange in the bottom is connected with base, and top flange is connected with counterweight frame 1;Counterweight frame 1 is square, bottom Plate and wall thickness preferably take 5-10mm, such as Fig. 4-Fig. 5, according to its size of the Quality Design of applying counterweight;Strain Meter presses the axial direction bonding of test specimen, and measurement position is respectively symmetric position on the outside of flange in the bottom, sleeve bottom Inner side symmetric position, outside of sleeve are near flange in the bottom end position, sleeve pipe middle part outside, outside of sleeve Near top flange position;Accelerometer measures direction of vibration and the vibration time-histories in vertical vibration direction, peace Holding position is table top, at each 1/4 position of test specimen, test specimen sleeve surface is at flange in the bottom and counterweight frame Middle part.
The quality of counterweight frame 1 can be selected as follows, and 220kV composite bushings apply counterweight and are It is 1500kg that 750kg, 500kV composite bushing applies counterweight, and more than 500kV equipment applies counterweight should be separately Calculate and determine.
The judgement of composite bushing ultimate limit states and the mark of ultimate bearing force value in the test of seismographic station It is fixed
In the process of the test of seismographic station, should step by step apply earthquake load, input-to-state stabilization is recommendation time-histories ripple Or select artificial time history's ripple or practically seismic wave, input acceleration peak by seismic safety evaluation for engineering sites report Value increases step by step earthquake load from 0.1g by amplification of 0.1g, until test specimen reaches the bearing capacity limit State is simultaneously damaged.
Composite bushing ultimate limit state is according to following rule judgment in the test of seismographic station:Outside monitoring sleeve Side near flange in the bottom end position strain time history, in not up to ultimate limit states, the position The strain time history curve almost symmetry put, such as Fig. 6;Under limit state, foil gauge curve occurs larger Distortion, such as Fig. 7 and 8;Choose strain time history curve and be distorted operating mode for ultimate limit state generation Operating mode, 1.88g operating modes in such as Fig. 7;The peak value of the period of right time seismic response that distorts under the operating mode is taken, The 8-10s periods in such as Fig. 7, are the foundation of ultimate limit states calculating.
Composite bushing ultimate bearing capacity is calculated by following rule in the test of seismographic station:Such as Fig. 9, counterweight frame is remembered 1 is m1 with weight mass, and the centre-to-centre spacing casing flange of counterweight frame 1 distance is h1, takes bearing capacity pole at this Acceleration responsive peak value is a1 under limit state;The quality of the upper segment of note composite bushing is m2, middle part Quality be the quality of m3-m5 and lower section be m6;The upper segment be from top flange top to Arrive down at 2 times of the top flange height;The lower section is upwards to institute by the bottom of flange in the bottom State at 2 times of flange in the bottom height;The middle part is the removing upper segment and lower section;Will be described Middle part is equally divided into three sections, and quality from top to bottom is designated as successively m3, m4 and m5;It is described compound The acceleration peak value of material bushing test specimen each section of quality from top to bottom is a2-a6;Obtain the limit of test specimen Anti-bending bearing capacity Mse is:
Wherein, acceleration peak value a2-a6 is corresponded to obtained from following accelerometer respectively;It is placed on top Accelerometer on the outside of flange, be arranged on the composite sleeve height of specimen 1/4,1/2 and 3/4 outside accelerometer, the composite sleeve test piece lower part is arranged on, near the bottom The accelerometer in the outside of portion's flange.
Single-unit composite sleeve Quintic system beam test device
Single-unit is compound to discuss sleeve pipe Quintic system beam test device as shown in Figure 10, assay device main body point For four parts, respectively connect base 3, composite sleeve test specimen 2, loading end fixture and start Device;Test measurement device includes strain gauge means and displacement measuring device.
Wherein, connect base for fixing test specimen, test specimen is stood in connect base 3, and by spiral shell Tether and connect;Loading end fixture be one can pretension anchor ear device, for connecting composite sleeve test specimen 2 And actuator;Actuator is used to apply cantilever end thrust.The measurement position of strain gauge is with ground in measurement apparatus Described in shake platform test, displacement measuring device is arranged in loading position, measures the horizontal displacement of loading end.
The judgement of composite bushing ultimate limit states and ultimate bearing force value in Quintic system beam test Demarcation
In process of the test, overhung load is applied by actuator, by displacement controlled loading, load is applied Rate of acceleration can be 5mm/min, can select unidirectionally to be loaded or back and forth loading it is (every during reciprocal loading One rank displacement increment can be 10mm), until test specimen is destroyed, and depression of bearing force is maximum carrying The 80% of power.
The judgement of ultimate limit states is carried out as follows:Take the loading end movement d- that test is obtained Loading force F curves, as shown in figure 11, curve may have different mode in the shape of loading later stage curve, But typically more unify in early stage curve shape.Curve is by linear end rising, plasticity ascent stage and descending branch Composition, line taking segment endpoint is ultimate limit states point, remembers that load deflection now is dy, is loaded Power is Fy.
Obtaining ultimate bearing force value Mst of the composite bushing in Quintic system beam test is
Mst=Fy*h
Finally it should be noted that:Above example is only to illustrate technical scheme rather than to it Limit, those of ordinary skill in the art with reference to above-described embodiment although should be understood:Still can be right The specific embodiment of the present invention is modified or equivalent, and these are without departing from spirit of the invention and model Any modification enclosed or equivalent, apply pending claims of the invention it It is interior.

Claims (10)

1. a kind of scaling method of transformer station's composite sleeve antidetonation ultimate bearing force parameter, it is characterised in that: Including:
First product to composite sleeve, carries out respectively the test of earthquake simulation bumper and Quintic system bending resistance Test, respectively obtains antidetonation ultimate bearing capacity Mse and ultimate flexural strength Mst;
Conversion coefficient r is calculated by the antidetonation ultimate bearing capacity Mse and ultimate flexural strength Mst;
For the non-first batch products of the composite sleeve, Quintic system beam test is carried out, obtain bending resistance Ultimate bearing capacity Mst ';Antidetonation ultimate bearing capacity Mse ' is obtained by the conversion coefficient r.
2. a kind of mark of transformer station's composite sleeve antidetonation ultimate bearing force parameter as claimed in claim 1 Determine method, it is characterised in that:The conversion coefficient is determined by following formula:
R=Mse/Mst.
3. a kind of mark of transformer station's composite sleeve antidetonation ultimate bearing force parameter as claimed in claim 1 Determine method, it is characterised in that:The device of the earthquake simulation bumper test includes being arranged on the composite wood Counterweight frame at the top of material sleeve pipe test specimen and the base for being arranged on the composite sleeve test specimen bottom;Described Composite sleeve test specimen is provided with strain gauge and accelerometer;Place described device table top on and counterweight Frame is provided with accelerometer.
4. a kind of mark of transformer station's composite sleeve antidetonation ultimate bearing force parameter as claimed in claim 3 Determine method, it is characterised in that:The top and bottom of the composite sleeve test specimen is respectively equipped with flange;Institute State flange to be connected with the base and counterweight frame by bolt respectively.
5. a kind of mark of transformer station's composite sleeve antidetonation ultimate bearing force parameter as claimed in claim 4 Determine method, it is characterised in that:The strain gauge is symmetrically axially separately positioned on the composite sleeve test specimen Flange in the bottom outside and the flange in the bottom in survey;The strain gauge is axially disposed within the composite set Pipe test piece upper part, near outside, the composite sleeve test piece lower part of the top flange, near institute State the outside of flange in the bottom and the middle part outside of the composite sleeve test specimen;The accelerometer is arranged on The composite sleeve height of specimen 1/4,1/2 sum 3/4 outside, the middle part of the counterweight frame With the composite sleeve test piece lower part, the outside of the close flange in the bottom.
6. a kind of mark of transformer station's composite sleeve antidetonation ultimate bearing force parameter as claimed in claim 5 Determine method, it is characterised in that:In the earthquake simulation bumper process of the test, earthquake load is applied step by step, The seismic wave of input selects artificial time history's ripple or reality to recommend time-histories ripple or reporting by seismic safety evaluation for engineering sites Border seismic wave;Input acceleration peak value increases step by step earthquake load from 0.1g by amplification of 0.1g, until The composite sleeve test specimen reaches the bearing capacity limit and damages;
Judge the composite sleeve test specimen in the earthquake simulation bumper is tested according to following methods The bearing capacity limit:Strain time history of the composite sleeve test specimen on the outside of its flange in the bottom is monitored, In the not up to composite sleeve test specimen limit of bearing capacity, the curve symmetric of the strain time history; When the composite sleeve test specimen limit is reached, the curve of the strain time history is distorted;Choose institute The operating mode when curve for stating strain time history is distorted is the operating mode that the bearing capacity limit occurs;Under taking the operating mode The peak value of distortion period of right time seismic response is the foundation that limit of bearing capacity is calculated.
7. a kind of mark of transformer station's composite sleeve antidetonation ultimate bearing force parameter as claimed in claim 6 Determine method, it is characterised in that:The counterweight frame and weight mass are remembered for m1, bottom described in counterweight frame centre-to-centre spacing Flange distance is h1, takes the counterweight frame center bearing capacity limit acceleration peak value of response for a1;Note is compound The quality of the upper segment of material bushing test specimen is m2, the quality of middle part is m3-m5 and the quality of lower section is m6;The upper segment is down to 2 times of the top flange height by the top of top flange;It is described Lower section is upwards to 2 times of the flange in the bottom height by the bottom of flange in the bottom;The middle part is Remove the upper segment and lower section;The middle part is equally divided into into three sections, quality from top to bottom is successively It is designated as m3, m4 and m5;The acceleration peak value difference of the composite sleeve test specimen from top to bottom each section Correspond to a2-a6;The Ultimate Bearing Capacity Mse of the composite sleeve test specimen, is determined by following formula:
M s e = Σ i = 1 6 m i a i h i .
8. a kind of mark of transformer station's composite sleeve antidetonation ultimate bearing force parameter as claimed in claim 1 Determine method, it is characterised in that:The device of the Quintic system beam test includes being arranged on the composite set The base of pipe test specimen bottom and the start being connected with the composite sleeve test specimen by loading end fixing device Device;Strain gauge is provided with the composite sleeve test specimen;In loading end position, Displacement Meters are set, For measuring the horizontal displacement of loading end.
9. a kind of mark of transformer station's composite sleeve antidetonation ultimate bearing force parameter as claimed in claim 8 Determine method, it is characterised in that:The bottom of the composite sleeve test specimen is provided with flange;The flange passes through Bolt is connected with the base;The loading end fixing device is fixture, including for connecting the composite wood Material sleeve pipe test specimen and actuator can pretension anchor ear;The actuator applies thrust to its cantilever end;It is described Strain gauge is symmetrically axially separately positioned on the flange in the bottom outside and the bottom of the composite sleeve test specimen Survey in flange;The strain gauge is axially disposed within the composite sleeve test piece upper part, near the top The outside of flange, the composite sleeve test piece lower part, near the outside of the flange in the bottom and described multiple The middle part outside of condensation material sleeve pipe test specimen.
10. as claimed in claim 9 a kind of transformer station's composite sleeve antidetonation ultimate bearing force parameter Scaling method, it is characterised in that:During the Quintic system beam test, by the actuator to it Cantilever is further applied load, and by displacement controlled loading amount, the rate of application of the load is 5mm/min, is passed through Unidirectional loading or reciprocal loading, until the test specimen is destroyed, and the test specimen its bearing capacity when destroying Drop to 80% of maximum load capacity when not destroying;When the reciprocal loading is carried out, each rank displacement increases Measure as 10mm;
Judge as follows in the Quintic system beam test, the composite sleeve test specimen carries energy The power limit:Take the loading end movement d- loading force F curves that the Quintic system beam test is obtained, the loading End movement d- loading force F curves are made up of linear rise section, plasticity ascent stage and descending branch, take linearity range end Point is limit of bearing capacity point, remembers that load deflection now is dy, and loading force is Fy;And obtain composite bushing Ultimate bearing force value Mst in Quintic system beam test, is determined by following formula:
Mst=Fy*h
Wherein, h is the distance of loading end to flange in the bottom.
CN201510725097.7A 2015-10-29 2015-10-29 A kind of scaling method of transformer station's composite sleeve antidetonation ultimate bearing force parameter Active CN106644330B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510725097.7A CN106644330B (en) 2015-10-29 2015-10-29 A kind of scaling method of transformer station's composite sleeve antidetonation ultimate bearing force parameter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510725097.7A CN106644330B (en) 2015-10-29 2015-10-29 A kind of scaling method of transformer station's composite sleeve antidetonation ultimate bearing force parameter

Publications (2)

Publication Number Publication Date
CN106644330A true CN106644330A (en) 2017-05-10
CN106644330B CN106644330B (en) 2018-03-30

Family

ID=58830945

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510725097.7A Active CN106644330B (en) 2015-10-29 2015-10-29 A kind of scaling method of transformer station's composite sleeve antidetonation ultimate bearing force parameter

Country Status (1)

Country Link
CN (1) CN106644330B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109724887A (en) * 2019-02-14 2019-05-07 重庆交通大学 The RC bridge pier earthquake proof performance analysis method that cyclic loading is coupled with chloride ion corrosion
CN109724886A (en) * 2019-02-14 2019-05-07 重庆交通大学 The RC bridge pier antiseismic performance analysis system that cyclic loading is coupled with chloride ion corrosion

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6082173A (en) * 1997-09-15 2000-07-04 Wai; Yee Kong Method and apparatus for pile driving
CN201277925Y (en) * 2008-10-30 2009-07-22 河北理工大学 Concrete stress-strain full curve test apparatus with loading speed controllable
CN101706389A (en) * 2009-09-21 2010-05-12 方远建设集团股份有限公司 Device for testing fracture energy of concrete by three-point bending beam without self-gravity doing work
CN102749246A (en) * 2011-12-22 2012-10-24 同济大学 Prestress type steel-concrete structure using performance design method
CN104165807A (en) * 2014-08-13 2014-11-26 浙江大学 Large-deflection destruction testing device and method for prestressed concrete plate beam
CN104344993A (en) * 2013-07-23 2015-02-11 国家电网公司 Method for testing and measuring member bearing capacity and material performance parameters
CN104535427A (en) * 2014-12-12 2015-04-22 广西科技大学 Static loading testing method of continuous beam

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6082173A (en) * 1997-09-15 2000-07-04 Wai; Yee Kong Method and apparatus for pile driving
CN201277925Y (en) * 2008-10-30 2009-07-22 河北理工大学 Concrete stress-strain full curve test apparatus with loading speed controllable
CN101706389A (en) * 2009-09-21 2010-05-12 方远建设集团股份有限公司 Device for testing fracture energy of concrete by three-point bending beam without self-gravity doing work
CN102749246A (en) * 2011-12-22 2012-10-24 同济大学 Prestress type steel-concrete structure using performance design method
CN104344993A (en) * 2013-07-23 2015-02-11 国家电网公司 Method for testing and measuring member bearing capacity and material performance parameters
CN104165807A (en) * 2014-08-13 2014-11-26 浙江大学 Large-deflection destruction testing device and method for prestressed concrete plate beam
CN104535427A (en) * 2014-12-12 2015-04-22 广西科技大学 Static loading testing method of continuous beam

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109724887A (en) * 2019-02-14 2019-05-07 重庆交通大学 The RC bridge pier earthquake proof performance analysis method that cyclic loading is coupled with chloride ion corrosion
CN109724886A (en) * 2019-02-14 2019-05-07 重庆交通大学 The RC bridge pier antiseismic performance analysis system that cyclic loading is coupled with chloride ion corrosion

Also Published As

Publication number Publication date
CN106644330B (en) 2018-03-30

Similar Documents

Publication Publication Date Title
CN105547617B (en) A kind of ultra-high voltage transformer station main equipment porcelain bushing shell shock resistance detection method and component
CN104897479B (en) A kind of composite support insulator mechanical property comprehensive detection system
JP2014088689A (en) Loading test method and loading test device for composite reinforcement ground
CN106644330A (en) Transformer substation composite material bushing anti-seismic limit bearing capacity parameter calibration method
CN107503386A (en) Anchor rod body holds the detection means and detection method of load
CN106124151B (en) Extra-high voltage direct-current single-column composite post insulator shock test device and its test method
CN207379643U (en) A kind of force snesor
CN108918278A (en) Pile foundation indoor model test method
CN110082023B (en) Cable force real-time monitoring device and monitoring method
Li et al. Seismic testing and modeling of cylindrical electrical equipment with GFRP composite insulators
CN104063564B (en) Method for selecting mounting points of transmission iron tower stress sensors based on finite element analysis
CN204389447U (en) 750kV pillar porcelain insulator vibroacoustics detection experiment servicing unit
CN105806210A (en) High-resolution strain testing method
CN107063611B (en) Anti-seismic evaluation method for electrical equipment made of pillar composite material
Epackachi et al. Mechanical behavior of electrical hollow composite post insulators: Experimental and analytical study
CN209979056U (en) Portable electric subway platform scale rapid calibrating device
Jacobs et al. Shake table testing of container cranes
RU145007U1 (en) Device for measuring support reactions
CN205808655U (en) Extra-high voltage direct-current twin columns couple composite post insulator shock test device
CN205808659U (en) Extra-high voltage direct-current single-column composite post insulator shock test device
RU156561U1 (en) Device for measuring support reactions
CN202018393U (en) Mould for measuring concrete temperature constrained strain
Shi et al. Axial cyclic testing of concrete-filled steel tube columns in diagrid structures
KR20070052850A (en) The device for measuring coefficient of lateral earth pressure and the method thereof
Abdulhakim et al. Practical investigation for the concept of a serial-type build-up force measurement system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant