CN106053225A - Testing device for applying persistent pressure-torsion damage load to concrete member - Google Patents
Testing device for applying persistent pressure-torsion damage load to concrete member Download PDFInfo
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- CN106053225A CN106053225A CN201610493715.4A CN201610493715A CN106053225A CN 106053225 A CN106053225 A CN 106053225A CN 201610493715 A CN201610493715 A CN 201610493715A CN 106053225 A CN106053225 A CN 106053225A
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- 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
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- 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
- G01N3/22—Investigating strength properties of solid materials by application of mechanical stress by applying steady torsional forces
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Abstract
The invention provides a testing device for applying a persistent pressure-torsion damage load to a concrete member. The testing device comprises a torque loading mechanism and a pressure loading mechanism, wherein the torque loading mechanism comprises a first base, a horizontal rolling shaft, a vertical push shaft, a push shaft sleeve and a first jack; the pressure loading mechanism comprises a second base, a horizontal push shaft and a second jack; the horizontal push shaft is provided with a second limiting part and a first rack set along the axial direction, and a second rack set meshed with the first rack set is arranged on the inner wall of the second support seat sleeve; and a first inductor and a second inductor are connected with a digital display reading instrument. The testing device has the advantages that the structure is simple and compact, fewer materials are wasted, the applied pressure and the torque damage load can be maintained for a long time, the torque and the pressure borne by the concrete member can be adjusted, and the torque loading mechanism and the pressure loading mechanism in the whole testing device are not mutually interfered.
Description
[technical field]
The invention belongs to the assay device of the use in concrete member of the realm of building construction, be specifically related to a kind of to concrete structure
Part construction persistently pressure turns round the assay device of damage load.
[background technology]
Early stripping formwork system technology is a kind of novel " Fast-dismantle system ", is in engineering and promotes the use the stage.Should " Quick Release body
System " it is exactly when the concrete that a certain layer pours reaches some strength, on the premise of ensureing construction safety, except the vertical rod retained
And evening tear open outside fastener, beam bottom mother plate is removed ahead of time, thus accelerating construction progress.Aluminum current alloy early stripping formwork system technology central sill
The dismounting time of plate bed die mainly with reference to external experience, reaches 36 hours i.e. to remove beam slab bed die in the age of concrete.Therefore,
The most immature early-age concrete component is also strengthened by the probability of extraneous load action, and early age solidifying soil component is in the external world
Whether can produce damage under the effect of load and damage whether the performance of later stage concrete component can be produced impact is engineering
One of problem that personnel pay high attention to.
To this end, research early-age concrete component is at the same time by being showed under persistency moment of torsion and pressure effect
Damage mechanics performance, is one of key issue calculating early-age concrete structural strength, rigidity and stability.
At present, some researcheres have developed some tests being subject to turn round, Compressive Performance is tested to concrete component
Device, but all there are some defects, such as, it is big that whole assay device expends quantity of material, has the upper torque limit value being subject to and wants
Ask, it is impossible to the moment of torsion being subject to concrete component carries out increase and adjusts；Being interfered by torsion, pressurized often occurs in assay device
Phenomenon, thus cannot effectively to concrete component apply persistent pressure, turn round damage load.
[summary of the invention]
The technical problem to be solved is that providing a kind of turns round damage load to concrete component construction persistently pressure
Assay device.
The present invention is to solve above-mentioned technical problem by the following technical programs: a kind of to concrete component construction persistently pressure
Turning round the assay device of damage load, this assay device includes a torque loading mechanism and a pressure-loaded mechanism, and described moment of torsion adds
Mounted mechanism is connected with the two ends of concrete component respectively with pressure-loaded mechanism；
Described torque loading mechanism includes one first pedestal, a horizontal roller bearing, a vertical push shaft, a push shaft sleeve and
It is installed vertically on the first jack of the first pedestal；Described horizontal roller bearing is horizontally installed to the first base by two first support base sleeve barrels
Seat, described horizontal roller bearing is welded with one first gear, and the left part of this horizontal roller bearing is butted on the first pedestal, this horizontal roller bearing
Right part is provided with a first loading end plate being connected with concrete component one end；Described push shaft sleeve is vertically erected on the first pedestal
On, described vertical push shaft is arranged in push shaft sleeve, and described vertical push shaft is provided with one first limiting section and one first teeth vertically
Group, described first limiting section and the first opposing setting of teeth group, described first teeth group is meshed with the first gear, and this vertically pushes away
The head end of axle is provided with first card-bit part mated with this first limiting section, and the tail end of this vertical push shaft is by one first sense
Device and the first jack is answered to connect；
Described pressure-loaded mechanism includes that one second pedestal, a horizontal push shaft and are horizontally installed on the second pedestal
Second jack；Described horizontal push shaft is provided with one second limiting section and one first tooth bar group vertically, and described horizontal push shaft passes through
Two second support base sleeve barrels are horizontally installed on the second pedestal, and the inwall of described second support base sleeve barrel is provided with and this first tooth bar group phase
Second tooth bar group of engagement, the left part of this horizontal push shaft is provided with second loading end being connected with the concrete component other end
Plate, the right part of this horizontal push shaft is connected by one second induction apparatus and the second jack, and this horizontal push shaft be provided with one and
Second card-bit part of this second limiting section coupling, described second card-bit part be positioned at the second loading end plate and the second support base sleeve barrel it
Between；
Described first induction apparatus and the second induction apparatus are all connected with a digital display readout instrument.
Further, described first limiting section is one second teeth group, and described first card-bit part is by two first semicircle locks
Sheet forms, and described in two, the first semicircle locking plate is paid by nut lock, and wherein described in one, the first semicircle locking plate is provided with and first
Teeth group is meshed the 3rd teeth group of coupling, and another described first semicircle locking plate is provided with and is meshed with the second teeth group
The 4th teeth group joined.
Further, described second limiting section is one the 5th teeth group, and described second card-bit part is by two second semicircle locks
Sheet forms, and described in two, the second semicircle locking plate is paid by nut lock, and wherein described in one, the second semicircle locking plate is provided with and the 5th
Teeth group be meshed coupling the 6th teeth group.
Further, this assay device also includes that two are respectively welded in the load plate at concrete component two ends, described first
Loading end plate to be connected with concrete component one end by load plate described in, described second loads end plate by another described loading
Plate is connected with the concrete component other end.
Further, described load plate includes a load plate body welded mutually with reinforcing bar in concrete component, pre-buried
The end plate that caves in concrete component, described in the end plate that caves in be welded in load plate body；Load plate body and first described in two
Load end plate, the second loading end plate is fastened by nut respectively and connects.
Further, the left part of described horizontal roller bearing is provided with one first hemispherical end plate, with water on described first pedestal
The left part place of offseting of flat roller bearing is provided with one second hemispherical end plate, described first hemispherical end plate and the second hemispherical end plate phase
Coupling.
The beneficial effects of the present invention is:
Whole assay device is simple and compact for structure, it is less to expend material, it is possible to safely and effectively moment of torsion is acted on coagulation
On soil component so that concrete component is turned round along axle center；By the first jack and the cooperation of the first card-bit part, the second jack
Coordinate with the second card-bit part, pressure applied can not only be kept for a long time to damage load with moment of torsion, and can be to coagulation
Soil moment of torsion suffered by component, pressure are adjusted；It addition, torque loading mechanism and pressure-loaded mechanism in whole experimental provision
Between mutually do not result in interference, it is possible to difference as required applies pressure and moment of torsion load effectively.
[accompanying drawing explanation]
The invention will be further described the most in conjunction with the embodiments.
Fig. 1 is the schematic diagram that concrete component construction persistently pressure is turned round the assay device of damage load by the present invention.
Fig. 2 is the partial schematic diagram of torque loading mechanism in the present invention.
Fig. 3 is vertical push shaft and the schematic diagram of the first card-bit part in the present invention.
Fig. 4 is the partial schematic diagram of pressure-loaded mechanism in the present invention.
Fig. 5 is the schematic diagram of the second card-bit part in the present invention.
Fig. 6 is the schematic diagram of load plate in the present invention.
[detailed description of the invention]
Incorporated by reference to refering to Fig. 1 to Fig. 6, concrete component construction persistently pressure is turned round the assay device of damage load by the present invention
100, this assay device 100 includes torque loading mechanism 1 and a pressure-loaded mechanism 2, described torque loading mechanism 1 and pressure
Load maintainer 2 two ends with concrete component 200 respectively are connected.
Torque loading mechanism 1 include one first pedestal 11, horizontal roller bearing 12, vertical push shaft 13, push shaft sleeve 14,
And first jack 15 being installed vertically on the first pedestal 11；Described horizontal roller bearing 12 is by two first support base sleeve barrel 16 water
Safety is loaded on the first pedestal 11, and the most horizontal roller bearing 12, through two first support base sleeve barrels 16, described horizontal roller bearing 12 is welded with one
First gear 121, the left part of this horizontal roller bearing 12 is butted on the first pedestal 11, and the right part of this horizontal roller bearing 12 is provided with one with mixed
The first loading end plate 122 that solidifying soil component 200 one end connects；Described push shaft sleeve 14 is vertically erected on the first pedestal 11, institute
Stating vertical push shaft 13 and be arranged in push shaft sleeve 14, described vertical push shaft 13 is provided with one first limiting section 131 and one first vertically
Teeth group (not shown), described first limiting section 131 and the first opposing setting of teeth group 132, described first teeth group and first
Gear 121 is meshed, and the head end of this vertical push shaft 13 is provided with first card-bit part 17 mated with this first limiting section 131,
And the tail end of this vertical push shaft 13 is connected with the first jack 15 by one first induction apparatus 18.
Described pressure-loaded mechanism 2 includes that the one second horizontal push shaft 22 and of pedestal 21, is horizontally installed to the second pedestal
The second jack 23 on 21；Described horizontal push shaft 22 is provided with one second limiting section 221 and one first tooth bar group 222 vertically,
Described horizontal push shaft 22 is horizontally installed on the second pedestal 21 by two second support base sleeve barrels 24, and the most horizontal push shaft 22 is through two the
Two support base sleeve barrels 24, the inwall of described second support base sleeve barrel 24 is provided with the second tooth bar group being meshed with this first tooth bar group 222
241, the left part of this horizontal push shaft 22 is provided with a second loading end plate 223 being connected with concrete component 200 other end, this water
The right part of horizontal sliding axle 22 is connected with the second jack 23 by one second induction apparatus 25, and this horizontal push shaft 22 be provided with one and
Second card-bit part 26 of this second limiting section 221 coupling, described second card-bit part 26 is positioned at the second loading end plate 223 and second
Between cover for seat cylinder 24.
Described first induction apparatus 18 is all connected with a digital display readout instrument (not shown) with the second induction apparatus 25, the i.e. first sensing
The respective value that device 18 and the second induction apparatus 25 sense is at digital display readout instrument, first induction apparatus the 18, second induction apparatus 25 and number
The setting of aobvious readout instrument, it is possible to the thrust applying the first jack 15 and the second jack 23 carries out real-time tracking.
The operation principle of torque loading mechanism 1: the vertical push shaft 13 in push shaft sleeve 14 is produced and hangs down by the first jack 15
Straight thrust upwards, the size of this thrust is sensed by the first induction apparatus 18 and is shown on digital display readout instrument, and this thrust makes
Obtain vertical push shaft 13 to move up, then drive the first gear 121 engaged with the first gear train on vertical push shaft 13 to rotate, thus
Horizontal roller bearing 12 is driven to rotate, because concrete component 200 is with the first loading end plate 122 on horizontal roller bearing 12 right part even
Connecing, so the rotation of horizontal roller bearing 12 is equivalent to concrete component 200 is applied with moment of torsion, its size is the first jack 15
Size be multiplied by the radius of the first gear 121；After numerical value shown on digital display readout instrument reaches design requirement, by first
Card-bit part 17 adds and is held in the first limiting section 131 so that vertical push shaft 13 stops the movement in vertical direction, and the most horizontal roller bearing 12 stops
Spline is moved, and then concrete component 200 is applied persistent moment of torsion.
The operation principle of pressure-loaded mechanism 2: the second jack 23 produces level (i.e. concrete to the left to horizontal push shaft 22
The direction at component 200 place) thrust, the size of this thrust is sensed by the second induction apparatus 25 and is shown in digital display readout instrument
On, and this thrust makes horizontal push shaft 22 be axially moveable concrete component 200 to apply pressure, and by the first loading end plate
Pressure applied is passed to concrete component 200 by 122 equably；Want when numerical value shown on digital display readout instrument reaches design
After asking, the first card-bit part 26 is added and is held in the first limiting section 221 so that horizontal push shaft 22 stops moving axially, and then to mixed
Solidifying soil component 200 applies persistent pressure.
It should be noted that in pressure-loaded mechanism 2, the first tooth bar group 222 and the second support base sleeve barrel on horizontal push shaft 22
The setting of the second tooth bar group 24 on 24, its purpose is to be stung tightly with engaging of the first tooth bar group 222 by the second tooth bar group 24
With the rotation of limit levels push shaft 22, i.e. make horizontal push shaft 22 that axially-movable can only occur, thus limit pressure-loaded end
Torsion；In torque loading mechanism 1, outwards translated by the axle of two first support base sleeve barrel 16 limit levels roller bearings 12, retain water
The axial torsion of flat roller bearing 12 and axially-movable, i.e. two support base sleeve barrels 16 can ensure that horizontal roller bearing 12 is at moment of torsion loading procedure
In do not offset, make horizontal roller bearing 12 around center rotating.
Wherein, the first limiting section 131 is one second teeth group 131a, and described first card-bit part 17 is by two first semicircle locks
Sheet (the respectively first semicircle semicircle locking plate 172 of locking plate 171, first) composition, the first semicircle locking plate 171 and the first semicircle
Shape locking plate 172 is paid by nut 173 lock, wherein the first semicircle semicircle locking plate 171 of locking plate that is first described in be provided with
First teeth group (not shown) is meshed the 3rd teeth group 1711 of coupling, another described first semicircle locking plate that is first semicircle
Shape locking plate 172 is provided with the 4th teeth group (not shown) of the coupling that is meshed with the second teeth group 131a；By the first semicircle lock
The 3rd teeth group 1711 on sheet 171 is directed at the 4th the 4th teeth group alignment on the first teeth group, the first semicircle locking plate 172
On the head end of the second teeth group 131a the vertical push shaft 12 that is fastened on vertical push shaft 13, and paid by nut 173 lock, then the 3rd
Teeth group 1711 engages with the first teeth group stings tight, the 4th the 4th teeth group and engages with the second teeth group 131a and sting tightly, thus limit
Make the movement of vertical push shaft 12.
Second limiting section 221 is one the 5th teeth group 221a, and described second card-bit part 26 (is divided by two second semicircle locking plates
It is not second semicircle locking plate the 261, second semicircle locking plate 262) composition, the second semicircle locking plate 261 passes through with the second semicircle locking plate 262
Nut 263 lock is paid, and wherein described in one, second semicircle locking plate that is second semicircle locking plate 261 is provided with and the 5th teeth group 221a phase
6th teeth group 2611 of engagement coupling；6th teeth group 2611 on second semicircle locking plate 261 is directed at the 5th teeth group 221a,
And second semicircle locking plate the 261, second semicircle locking plate 262 is fastened on horizontal push shaft 22, and paid by nut 263 lock, then the
Six teeth groups 2611 engage with the 5th teeth group 221a stings tightly, thus limits the movement of horizontal push shaft 22.
In order to ensure that concrete component 200 loads end plate 122, second with first and loads being reliably connected of end plate 223, and make
Torsion can be efficiently transferred on concrete component 200, then this assay device 100 further comprises two and is respectively welded in concrete
The load plate 3 at component 200 two ends, described first loads end plate 122 by load plate described in one 3 and concrete component 200 one end
Connecting, described second loads end plate 223 is connected with concrete component 200 other end by another described load plate 3；Specifically,
Load plate 3 includes that a load plate body 31, welded with reinforcing bar 201 phase in concrete component 200 is embedded in concrete component in advance
The end plate 32 that caves in 200, described in the end plate 32 that caves in be welded in load plate body 31；Described in two, load plate body 31 adds with first
Carry end plate 122, second and load end plate 223 respectively by nut 33 fastening connection.
The left part of described horizontal roller bearing 12 is provided with one first hemispherical end plate 191, with level on described first pedestal 11
The left part place of offseting of roller bearing 12 is provided with one second hemispherical end plate 192, described first hemispherical end plate 191 and the second hemispherical
End plate 192 matches；Together with first hemispherical end plate 191 crashes with the second hemispherical end plate 192, it is possible to reduce horizontal roller bearing
The contact area of the left part of 12 and the first pedestal 11, it is to avoid due to the effect of pressure make the left part of horizontal roller bearing 12 with
The frictional force of the first pedestal 11 increases, and causes the difficulty that moment of torsion applies.
When the present invention applies, first concrete component 200 is installed on experimental provision 100 of the present invention, afterwards via moment of torsion
Load maintainer 1 applies moment of torsion damage load to it, after moment of torsion damage load reaches desired value, pins the first jack 15, and
First card-bit part 17 is added be held in the first limiting section 131 with limit vertical push shaft 13 motion thus to apply moment of torsion hold
Lotus, if finding, the force value that first sensor 18 senses during moment of torsion holds lotus has declined, and can first take off the first card-bit part
17, bring up to desired value by 15 loads of the first jack, more again block to add by the first card-bit part 17 and be held in the first limiting section
131；And via pressure-loaded mechanism 2, concrete component 200 is applied stress injury load, when stress injury load reaches target
After value, pin the second jack 23, and the second card-bit part 26 is added the shifting being held in the second limiting section 221 with limit levels push shaft 22
Move thus the pressure applied is held lotus, if the discovery force value that the second sensor 25 senses during moment of torsion holds lotus is
Decline, can first take off the second card-bit part 26, bring up to desired value by 23 loads of the second jack, then by the second card-bit part 26
Again block to add and be held in the second limiting section 221.
To sum up, assay device of the present invention is simple and compact for structure, it is less to expend material, it is possible to safely and effectively by moment of torsion effect
On concrete component so that concrete component is turned round along axle center；Coordinated by the first jack and the first card-bit part, second
Jack and the second card-bit part coordinate, and pressure applied can not only be kept for a long time to damage load with moment of torsion, and can
Moment of torsion suffered by concrete component, pressure are adjusted；It addition, torque loading mechanism adds with pressure in whole experimental provision
Interference is not mutually resulted in, it is possible to difference as required applies pressure and moment of torsion load effectively between mounted mechanism.
Claims (6)
1. the assay device that concrete component construction persistently pressure is turned round damage load, it is characterised in that: this assay device bag
Include a torque loading mechanism and a pressure-loaded mechanism, described torque loading mechanism and pressure-loaded mechanism respectively with concrete structure
The two ends of part connect；
Described torque loading mechanism includes that one first pedestal, a horizontal roller bearing, a vertical push shaft, a push shaft sleeve and one are vertical
It is installed on the first jack of the first pedestal；Described horizontal roller bearing is horizontally installed to the first pedestal by two first support base sleeve barrels,
Being welded with one first gear on described horizontal roller bearing, the left part of this horizontal roller bearing is butted on the first pedestal, the right side of this horizontal roller bearing
End is provided with a first loading end plate being connected with concrete component one end；Described push shaft sleeve is vertically erected on the first pedestal
On, described vertical push shaft is arranged in push shaft sleeve, and described vertical push shaft is provided with one first limiting section and one first teeth vertically
Group, described first limiting section and the first opposing setting of teeth group, described first teeth group is meshed with the first gear, and this vertically pushes away
The head end of axle is provided with first card-bit part mated with this first limiting section, and the tail end of this vertical push shaft is by one first sense
Device and the first jack is answered to connect；
Described pressure-loaded mechanism includes second that one second pedestal, a horizontal push shaft and are horizontally installed on the second pedestal
Jack；Described horizontal push shaft is provided with one second limiting section and one first tooth bar group vertically, and described horizontal push shaft is by two the
Two support base sleeve barrels are horizontally installed on the second pedestal, and the inwall of described second support base sleeve barrel is provided with and is meshed with this first tooth bar group
The second tooth bar group, the left part of this horizontal push shaft be provided with one be connected with the concrete component other end second loading end plate, should
The right part of horizontal push shaft is connected by one second induction apparatus and the second jack, and this horizontal push shaft be provided with one and this second
Second card-bit part of limiting section coupling, described second card-bit part loads between end plate and the second support base sleeve barrel second；
Described first induction apparatus and the second induction apparatus are all connected with a digital display readout instrument.
The most according to claim 1, concrete component construction persistently pressure is turned round the assay device of damage load, it is characterised in that:
Described first limiting section is one second teeth group, and described first card-bit part is made up of two first semicircle locking plates, described in two first
Semicircle locking plate is paid by nut lock, and wherein described in one, the first semicircle locking plate is provided with the coupling that is meshed with the first teeth group
3rd teeth group, another the described first semicircle locking plate is provided with the 4th teeth group of the coupling that is meshed with the second teeth group.
The most according to claim 1, concrete component construction persistently pressure is turned round the assay device of damage load, it is characterised in that:
Described second limiting section is one the 5th teeth group, and described second card-bit part is made up of two second semicircle locking plates, described in two second
Semicircle locking plate is paid by nut lock, and wherein described in one, the second semicircle locking plate is provided with the coupling that is meshed with the 5th teeth group
6th teeth group.
The most according to claim 1, concrete component construction persistently pressure is turned round the assay device of damage load, it is characterised in that:
This assay device also includes that two are respectively welded in the load plate at concrete component two ends, and described first loads end plate by described in one
Load plate is connected with concrete component one end, described second load end plate by another described load plate and concrete component another
End connects.
The most according to claim 4, concrete component construction persistently pressure is turned round the assay device of damage load, it is characterised in that:
Described load plate include a load plate body welded mutually with reinforcing bar in concrete component, one be embedded in advance in concrete component interior
Fall into end plate, described in the end plate that caves in be welded in load plate body；Load plate body described in two and first loads end plate, the second loading end
Plate is fastened by nut respectively and connects.
The most according to claim 1, concrete component construction persistently pressure is turned round the assay device of damage load, it is characterised in that:
The left part of described horizontal roller bearing is provided with one first hemispherical end plate, and on described first pedestal, the left part with horizontal roller bearing offsets
Place is provided with one second hemispherical end plate, and described first hemispherical end plate and the second hemispherical end plate match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610493715.4A CN106053225B (en) | 2016-06-29 | 2016-06-29 | The experimental rig that persistently pressure turns round damage load is applied to concrete component |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610493715.4A CN106053225B (en) | 2016-06-29 | 2016-06-29 | The experimental rig that persistently pressure turns round damage load is applied to concrete component |
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| CN106053225B CN106053225B (en) | 2018-11-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113447368A (en) * | 2021-06-28 | 2021-09-28 | 中国十七冶集团有限公司 | Concrete torque testing device and testing method |
| CN116242717A (en) * | 2023-01-05 | 2023-06-09 | 哈尔滨学院 | Mechanical property testing device of fiber concrete initial torsion member scaling model |
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Cited By (3)
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| CN113447368A (en) * | 2021-06-28 | 2021-09-28 | 中国十七冶集团有限公司 | Concrete torque testing device and testing method |
| CN116242717A (en) * | 2023-01-05 | 2023-06-09 | 哈尔滨学院 | Mechanical property testing device of fiber concrete initial torsion member scaling model |
| CN116242717B (en) * | 2023-01-05 | 2023-12-05 | 哈尔滨学院 | Mechanical property testing device of fiber concrete initial torsion member scaling model |
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| Publication number | Publication date |
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| CN106053225B (en) | 2018-11-16 |
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