CN108956292A - Consider the experimental rig of steel bridge deck seam cross-section primary stress effect - Google Patents
Consider the experimental rig of steel bridge deck seam cross-section primary stress effect Download PDFInfo
- Publication number
- CN108956292A CN108956292A CN201810651190.1A CN201810651190A CN108956292A CN 108956292 A CN108956292 A CN 108956292A CN 201810651190 A CN201810651190 A CN 201810651190A CN 108956292 A CN108956292 A CN 108956292A
- Authority
- CN
- China
- Prior art keywords
- module
- primary stress
- bridge deck
- power transmission
- steel bridge
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of experimental rigs of consideration steel bridge deck seam cross-section primary stress effect, comprising: primary stress gear adjustment module, crank block power transmission module, spring pipe rack module and rubber act on head module；Primary stress gear adjustment module is fixedly connected with crank block power transmission module using bearing, crank block power transmission module is connect with spring pipe rack module by connecting rod, connecting rod can move linearly on the notch of the sliding slot of the connecting plate of spring pipe rack module, and rubber effect head module is connect with spring pipe rack module by connecting rod.The present invention transmits seam cross-section primary stress by rubber action head, can preferably simulation steel bridge deck the suspension cable the effects of under, the actual loading situation of weld seam regional area significantly improves the efficiency of test, reduces experimentation cost.
Description
Technical field
The present invention relates to bridge structure fatigue test Instrument technology field, especially a kind of consideration steel bridge deck weld seam is transversal
The experimental rig of face primary stress effect.
Background technique
Orthotropic Steel Bridge Deck because of the advantages such as its is light-weight, intensity is high, bending resistance torsional rigidity is big, be widely used in greatly across
Spend cable bridge construction.But since ribbed stiffener setting and welding operate the originals such as inevitable bring welding residual stress in length and breadth
Fatigue damage phenomenon often occurs for cause, steel bridge deck, this by bridge safety and working performance bring adverse effect.Cable-stayed bridge is made
For a kind of typical steel bridge deck bridge system, suspension cable bring axial stress is transferred to steel box-girder by anchorage zone, leads
Cause box beam weld seam axial direction primary stress very important.Currently, the fatigue damage that domestic and foreign scholars have been directed to steel bridge deck is carried out
A large amount of theoretical and experimental investigations.But the axial force for mostly only accounting for drag-line is studied at this stage to position of joints such as cable-girder anchorage zones
Fatigue behaviour influence.Steel box-girder is only arranged as the boundary condition for simulating real bridge in test, does not analyze axial force to steel
The influence of floorings fatigue behaviour.And actually power from suspension cable reaches anchorage zone, it is final or born by steel box-girder.According to
Saint venant's principle, stress concentration effect is unobvious at this time, when considering suspension cable axially to steel box-girder Influence of Fatigue Properties, more
As a kind of at the specific stress of bridge when more, without being deeply considered as influence factor.
It is at present the fatigue damage of simulation steel bridge deck, uses MTS servo hydraulic control system device and oscillating mode more
Fatigue experimental device, the former is mainly used in steel bridge deck Segment Model or the biggish test specimen of other sizes, and experimentation cost compared with
It is high.The latter is primarily adapted for use in the fatigue test of steel bridge deck partial model test specimen, economy.But it is both difficult to directly trying
Test application seam cross-section primary stress on test specimen.
As it can be seen that how to design a kind of novel, relatively inexpensive and steel bridge deck seam cross-section can be simulated initially answer
The experimental rig of power effect, just becomes technical problem urgently to be resolved.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of consideration steel bridge deck seam cross-section primary stress work
Experimental rig can significantly improve the efficiency of test, reduce experimentation cost.
In order to solve the above technical problems, the present invention provide it is a kind of consideration steel bridge deck seam cross-section primary stress effect
Experimental rig, comprising: primary stress gear adjustment module, crank block power transmission module, spring pipe rack module and rubber action head
Module；Primary stress gear adjustment module is fixedly connected with crank block power transmission module using bearing, crank block power transmission module
It is connect with spring pipe rack module by connecting rod, connecting rod can move straight line on the notch of the sliding slot of the connecting plate of spring pipe rack module
Dynamic, rubber effect head module is connect with spring pipe rack module by connecting rod.
Preferably, the lower end of primary stress gear adjustment module is equipped with vertical perpendicular two gears, is made by adjusting changeover valve
The rotation of two gear of lower end is obtained, and the gear rotation of four, top is driven by connecting rod, to drive two sides crank block power transmission module
Work.
Preferably, the gear of primary stress gear adjustment module upper and lower ends utilizes lever regulated, which is two brills
There is the sleeve in cavity, length of connecting rod is done by bolt adjusting.
Preferably, crank block power transmission module one end and primary stress gear adjustment module upper outside gear utilize bearing
It is fixedly connected, is rotated with gear synchronous.
Preferably, sliding slot is equipped with ball in crank block power transmission module, facilitates linear motion of the sliding block on notch.
Preferably, sliding chute rod is equipped with scale in crank block power transmission module, and folded load can be marked according to telescopic spring amount
Size.
Preferably, spring pipe rack module is fixedly connected with crank block power transmission module, the sliding block of crank block power transmission module
It is equipped with the connecting rod of other end connecting spring, can control telescopic spring.
Preferably, the spring central axes of spring pipe rack module are equipped with guard bar, prevent spring from excessive deformation occurs.
Preferably, rubber effect head module is fixedly connected with spring pipe rack module, can adjust rubber work by adjusting bolt
With the horizontal and vertical position of head.
Preferably, rubber action head inside modules are equipped with electromagnet, can act on head module upper switch by rubber and control it
Working condition.
The invention has the benefit that at the beginning of experimental rig proposed by the present invention transmits seam cross-section by rubber action head
Beginning stress, can preferably simulation steel bridge deck the suspension cable the effects of under, the actual loading situation of weld seam regional area, significantly
The efficiency for improving test, reduces experimentation cost；The device of the invention can be to the steel that need to consider seam cross-section primary stress
Floorings partial model test specimen applies primary stress, provides and cuts for the Study on behavior of steel bridge deck under the systems such as cable-stayed bridge
Real feasible method.
Detailed description of the invention
Fig. 1 is the apparatus structure schematic diagram of the present apparatus.
Fig. 2 is the disassembly diagram of primary stress gear adjustment module.
Fig. 3 is primary stress gear adjustment module schematic diagram.
Fig. 4 is primary stress gear adjustment module adjusting rod disassembly diagram.
Fig. 5 is that primary stress gear adjustment module upper gear is driven schematic diagram.
Fig. 6 is that primary stress gear adjustment module upper gear is driven disassembly diagram.
Fig. 7 is crank block power transmission module diagram.
Fig. 8 is crank block power transmission module broken away view.
Fig. 9 is crank block power transmission module and spring pipe rack module synergistic effect partial resolution figure.
Figure 10 is the transmission rod schematic diagram of crank block power transmission module and spring pipe rack module.
Figure 11 is that spring pipe rack module disassembles schematic diagram.
Figure 12 is rubber action head module diagram.
Figure 13 is that rubber acts on head module dismantling schematic diagram.
Figure 14 is that rubber action head module level position-regulation portion divides schematic diagram 1.
Figure 15 is that rubber action head module level position-regulation portion divides schematic diagram 2.
Figure 16 is rubber action head inside modules schematic diagram
Figure 17 applies the device scheme of installation of test specimen for no moment of flexure primary stress.
Figure 18 is the device scheme of installation for having moment of flexure primary stress to apply test specimen.
Specific embodiment
As shown in Figure 1, considering the experimental rig of steel bridge deck seam cross-section primary stress effect, comprising: primary stress
Gear adjustment module, crank block power transmission module, spring pipe rack module and rubber act on head module；Primary stress gear adjusts mould
Block is fixedly connected with crank block power transmission module using bearing, and crank block power transmission module and spring pipe rack module are connected by connecting rod
It connects, connecting rod can move linearly on the notch of the sliding slot of the connecting plate of spring pipe rack module, and rubber acts on head module and bourdon tube
Frame module is connected by connecting rod.
The lower end of primary stress gear adjustment module is equipped with vertical perpendicular two gears, makes lower end two by adjusting changeover valve
Gear rotation, and the gear rotation of four, top is driven by connecting rod, so that two sides crank block power transmission module be driven to work.Initially
The gear of powershift gear adjustment module upper and lower ends is answered to utilize lever regulated, which is two sleeves for being drilled with cavity, passes through spiral shell
Length of connecting rod is done in bolt adjusting.
Crank block power transmission module one end and primary stress gear adjustment module upper outside gear connect using bearing is fixed
It connects, is rotated with gear synchronous.Sliding slot is equipped with ball in crank block power transmission module, facilitates linear motion of the sliding block on notch.
Sliding chute rod is equipped with scale in crank block power transmission module, and folded load can be marked according to telescopic spring amount.
Spring pipe rack module is fixedly connected with crank block power transmission module, and the sliding block of crank block power transmission module is equipped with another
The connecting rod of one end connecting spring can control telescopic spring.The spring central axes of spring pipe rack module are equipped with guard bar, prevent bullet
Excessive deformation occurs for spring.
Rubber effect head module is fixedly connected with spring pipe rack module, and the water of rubber action head can be adjusted by adjusting bolt
Gentle vertical position.Rubber action head inside modules are equipped with electromagnet, can act on head module upper switch by rubber and control its work
Make state.
By taking top plate-U rib test specimen as an example, as shown in Figure 17 and Figure 18, which includes changeover valve part 1, rotation
Valve 1a, changeover valve and lower part force-transmitting gear connecting rod 1b, lower part force-transmitting gear part 2 are fixedly connected with connecting rod 1b
Lower part force-transmitting gear 2a, it is vertical with lower part force-transmitting gear 2a to gear 2b, primary stress gear adjustment module adjusting rod 3, adjust
Pole inner sleeve 3a, adjusting rod outer sleeve 3b adjust bolt 3c, top force-transmitting gear 4a-4d, top force-transmitting gear connecting rod
4f, 4h, top force-transmitting gear fixed link 4e, 4g, 4i, top force-transmitting gear connecting rod fixed end 4j-4q, crank block module
Power transmission rod piece 5, the driver plate 5a of connection gear, another driver plate 5c, fixed link 5e, 5f, 5g, fixed end 5b, 5d, 5h,
5i, 5j, crank block module 6, slide bar end 6a, slide bar side pole 6b, sliding chute rod 6c, sliding slot ball 6d, connecting rod 6f, push rod are big
End 6g, sliding chute rod scale 6h, spring pipe rack module 7 pass through the spring pedestal 7a of push rod, push rod 7b, push rod small end head 7c, bullet
Spring 7d, spring outer cover 7e, spring pedestal 7f, rubber act on head module 8, coulisse 8a, chute vane 8b, rubber action head shell
8c, electro-magnet switch 8d, standing screw 8e, 8f, electromagnet 8g squeeze rubber block 8h, Rubber end 8i, nut 8j.
As shown in Figure 12 to Figure 18, rubber action head (is mainly adjusted according to determining device installation site needed for testing
Position), and the position of standing screw 8e length and chute vane 8b is adjusted, it is secured to chute vane 8b and coulisse 8a respectively
On, so that surface of test piece is close on the surface Rubber end 8i.It adjusts rubber effect head module 8 and is secured to standing screw 8e
On.Electro-magnet switch 8d is opened, is adsorbed in device on test specimen.
As shown in Figures 1 to 6, according to the axial force size applied needed for test, changeover valve 1a is rotated, under driving it
Portion force-transmitting gear 2a, 2b rotation then drive primary stress gear adjustment module adjusting rod 3 and top force-transmitting gear 4b rotation.
Top force-transmitting gear 4a, 4c, 4d is driven to rotate simultaneously.
As shown in figs. 7 to 11, top force-transmitting gear 4a, 4d are by driving driver plate 5a and 5c to adjust slide bar end 6a's
Position, and push push rod 7b compression or extension spring 7d.Payload data is read by sliding chute rod 6c high scale 6h.
Experimental rig proposed by the present invention transmits seam cross-section primary stress by rubber action head, being capable of preferably mould
Under quasi- steel bridge deck is the suspension cable the effects of, the actual loading situation of weld seam regional area significantly improves the efficiency of test, drop
Low experimentation cost；The device of the invention can be applied to that need to consider the steel bridge deck partial model test specimen of seam cross-section primary stress
Add primary stress, the Study on behavior for steel bridge deck under the systems such as cable-stayed bridge provides practicable method.
Claims (10)
1. considering the experimental rig of steel bridge deck seam cross-section primary stress effect characterized by comprising primary stress tooth
It takes turns adjustment module, crank block power transmission module, spring pipe rack module and rubber and acts on head module；Primary stress gear adjustment module
It is fixedly connected with crank block power transmission module using bearing, crank block power transmission module and spring pipe rack module are connected by connecting rod
It connects, connecting rod can move linearly on the notch of the sliding slot of the connecting plate of spring pipe rack module, and rubber acts on head module and bourdon tube
Frame module is connected by connecting rod.
2. considering the experimental rig of steel bridge deck seam cross-section primary stress effect as described in claim 1, feature exists
In the lower end of primary stress gear adjustment module is equipped with vertical perpendicular two gears, makes two gear of lower end by adjusting changeover valve
Rotation, and the gear rotation of four, top is driven by connecting rod, so that two sides crank block power transmission module be driven to work.
3. considering the experimental rig of steel bridge deck seam cross-section primary stress effect as claimed in claim 2, feature exists
In, primary stress gear adjustment module upper and lower ends gear using lever regulated, which is two sleeves for being drilled with cavity,
Length of connecting rod is done by bolt adjusting.
4. considering the experimental rig of steel bridge deck seam cross-section primary stress effect as described in claim 1, feature exists
In, crank block power transmission module one end is fixedly connected with primary stress gear adjustment module upper outside gear using bearing, with
Gear synchronous rotation.
5. considering the experimental rig of steel bridge deck seam cross-section primary stress effect as described in claim 1, feature exists
In sliding slot is equipped with ball in crank block power transmission module.
6. considering the experimental rig of steel bridge deck seam cross-section primary stress effect as described in claim 1, feature exists
In sliding chute rod is equipped with scale in crank block power transmission module, and folded load can be marked according to telescopic spring amount.
7. considering the experimental rig of steel bridge deck seam cross-section primary stress effect as described in claim 1, feature exists
In spring pipe rack module is fixedly connected with crank block power transmission module, and the sliding block of crank block power transmission module is equipped with the other end
The connecting rod of connecting spring can control telescopic spring.
8. considering the experimental rig of steel bridge deck seam cross-section primary stress effect as described in claim 1, feature exists
In the spring central axes of spring pipe rack module are equipped with guard bar.
9. considering the experimental rig of steel bridge deck seam cross-section primary stress effect as described in claim 1, feature exists
Be fixedly connected in, rubber effect head module with spring pipe rack module, can by adjust bolt adjust the level of rubber action head with
Vertical position.
10. considering the experimental rig of steel bridge deck seam cross-section primary stress effect as described in claim 1, feature exists
In rubber action head inside modules are equipped with electromagnet, can act on head module upper switch by rubber and control its working condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810651190.1A CN108956292B (en) | 2018-06-22 | 2018-06-22 | Test device considering initial stress action of cross section of steel bridge deck plate welding seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810651190.1A CN108956292B (en) | 2018-06-22 | 2018-06-22 | Test device considering initial stress action of cross section of steel bridge deck plate welding seam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108956292A true CN108956292A (en) | 2018-12-07 |
| CN108956292B CN108956292B (en) | 2020-08-25 |
Family
ID=64491978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810651190.1A Active CN108956292B (en) | 2018-06-22 | 2018-06-22 | Test device considering initial stress action of cross section of steel bridge deck plate welding seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108956292B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686978A (en) * | 2019-10-22 | 2020-01-14 | 张长青 | Bridge inhaul cable stretching resonance detection device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2572389Y (en) * | 2002-10-09 | 2003-09-10 | 同济大学 | Train running imitated structure fatigue test loading-frame |
| US7000484B2 (en) * | 2003-03-25 | 2006-02-21 | Kulite Semiconductor Products, Inc. | Load beam apparatus operative to prevent improper operation due to off axis loads |
| CN2784909Y (en) * | 2005-04-26 | 2006-05-31 | 李胜利 | Multifunctional combined experimental bench for mechanics of material |
| WO2012068037A2 (en) * | 2010-11-18 | 2012-05-24 | Honeywell International Inc. | System for monitoring structural assets |
| CN102650574A (en) * | 2011-08-19 | 2012-08-29 | 高速铁路建造技术国家工程实验室 | Dynamic load simulation device for high-speed railway |
| CN103163032A (en) * | 2013-03-29 | 2013-06-19 | 四川大学 | System and method for detecting fatigue strength of steel beam of corrugated steel web |
| CN203981518U (en) * | 2014-06-30 | 2014-12-03 | 长安大学 | The web clearance plane at the horizontal gusset plate of steel bridge place is out of shape fatigue test loading device outward |
| CN105445434A (en) * | 2015-12-22 | 2016-03-30 | 宝山钢铁股份有限公司 | Pipeline steel pipe on-site girth welding evaluation method |
-
2018
- 2018-06-22 CN CN201810651190.1A patent/CN108956292B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2572389Y (en) * | 2002-10-09 | 2003-09-10 | 同济大学 | Train running imitated structure fatigue test loading-frame |
| US7000484B2 (en) * | 2003-03-25 | 2006-02-21 | Kulite Semiconductor Products, Inc. | Load beam apparatus operative to prevent improper operation due to off axis loads |
| CN2784909Y (en) * | 2005-04-26 | 2006-05-31 | 李胜利 | Multifunctional combined experimental bench for mechanics of material |
| WO2012068037A2 (en) * | 2010-11-18 | 2012-05-24 | Honeywell International Inc. | System for monitoring structural assets |
| CN102650574A (en) * | 2011-08-19 | 2012-08-29 | 高速铁路建造技术国家工程实验室 | Dynamic load simulation device for high-speed railway |
| CN103163032A (en) * | 2013-03-29 | 2013-06-19 | 四川大学 | System and method for detecting fatigue strength of steel beam of corrugated steel web |
| CN203981518U (en) * | 2014-06-30 | 2014-12-03 | 长安大学 | The web clearance plane at the horizontal gusset plate of steel bridge place is out of shape fatigue test loading device outward |
| CN105445434A (en) * | 2015-12-22 | 2016-03-30 | 宝山钢铁股份有限公司 | Pipeline steel pipe on-site girth welding evaluation method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686978A (en) * | 2019-10-22 | 2020-01-14 | 张长青 | Bridge inhaul cable stretching resonance detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108956292B (en) | 2020-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104697758B (en) | Two power rod member test-beds | |
| CN107179183B (en) | Flexural pivot three-dimensional loading fatigue test device | |
| CN106769486B (en) | A kind of flexible connecting member testboard | |
| CN206515161U (en) | A kind of plate-type ballastless track adhesive property test devices of CRTS III | |
| CN208568499U (en) | Underwater connector bending square experimental rig | |
| CN102840955B (en) | Multi-dimensional multi-mode ground shock test device of building curtain wall | |
| CN206504963U (en) | Railway rail clip fatigue experimental device | |
| CN108956292A (en) | Consider the experimental rig of steel bridge deck seam cross-section primary stress effect | |
| CN108036913A (en) | A kind of Double earthquakes model test apparatus that can separately provide the vertical twisting vibration load of single-degree-of-freedom | |
| CN220960528U (en) | Reciprocating load loading device for shield segment joint anti-seismic test | |
| CN201075069Y (en) | Universal material testing machine | |
| CN107884171B (en) | Rail fastening reliability test | |
| CN204374012U (en) | A kind of drop impact tension test truss conversion equipment realizing elimination inertia force influence | |
| CN209945869U (en) | Crankshaft reliability test device | |
| CN206618551U (en) | A kind of high-precision bridge pad pressure testing machine | |
| CN205333412U (en) | Size adjustable pretightning force adj. tabular test piece anchor clamps of formula impact tester that drop hammer | |
| CN107192612A (en) | A kind of tension-torsion fatigue test board | |
| CN209485860U (en) | A kind of concrete for hydraulic structure Fatigue Cracking Test device | |
| CN203287173U (en) | Manual spring tension-compression testing machine | |
| CN216926378U (en) | Engine lug test fixture | |
| CN202101892U (en) | Novel hydraulic universal testing machine | |
| CN209280536U (en) | A kind of servo microcomputer control bridge expanssion joint performance test apparatus | |
| CN113804437A (en) | Connecting rod endurance fatigue test device and method | |
| CN105405348B (en) | A kind of fully hydraulic servo steering teaching bench | |
| CN207318270U (en) | A kind of experimental rig for wind electricity blade pre-embedded bolt set testing fatigue |
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 |