CN205941547U - But concrete temperature stress testing machine that direct measurement concrete warp - Google Patents
But concrete temperature stress testing machine that direct measurement concrete warp Download PDFInfo
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- CN205941547U CN205941547U CN201620722524.6U CN201620722524U CN205941547U CN 205941547 U CN205941547 U CN 205941547U CN 201620722524 U CN201620722524 U CN 201620722524U CN 205941547 U CN205941547 U CN 205941547U
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- 238000005259 measurement Methods 0.000 title claims abstract description 33
- 238000009662 stress testing Methods 0.000 title claims abstract description 33
- 230000033228 biological regulation Effects 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 description 14
- 238000001514 detection method Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model discloses a but concrete temperature stress testing machine that direct measurement concrete warp, include: the organism is equipped with a plurality of mobilizable templates on, the cooperation of a plurality of templates is injectd and to be suitable for the die cavity of placing the concrete piece, go up deformation measuring system, go up deformation measuring system and include: going up pre -buried pole for two, going up pre -buried pole position in die cavity top for two, two lower extremes of going up pre -buried pole are equipped with respectively and are suitable for the built -in fitting that stretches into in the concrete piece, go up the sensor, go up the upper portion that pre -buried pole at one of them shang was established to the sensor, on the pole of extending, the one end of the pole of extending links to each other with last sensor extend on, the pole the other end and wherein another to go up pre -buried pole continuous. According to the utility model discloses concrete temperature stress testing machine, but the deformation of direct measurement concrete, accuracy for measurement is high.
Description
Technical field
The utility model belongs to building field, is related to a kind of deformation measurement technology of concrete temperature stress testing machine, more
In particular it relates to a kind of can direct measurement concrete deformation concrete temperature stress testing machine.
Background technology
Concrete temperature stress testing machine (TSTM) have can laboratory simulation difference degree of restraint under concrete temperature
Degree stress and the function of deformation, ring to the cracking resistance evaluation of material, the structure mechanics of materials under temperature stress and constraints
Should be a kind of effective laboratory facilities.The test piece mould two ends of concrete temperature stress testing machine have two chucks, and wherein one
Hold as fixed chuck, one end is movable chuck.Under the condition of work of simulation staff cultivation, when active chuck contraction or expansion one
During individual micro-displacement, motor control active chuck is returned to initial position.The critical displacement value of adjustment active chuck determines about
The analog case of Shu Chengdu, so the certainty of measurement of concrete deformation determines accuracy and the credibility of bulk testing result.
In recent years, concrete temperature stress testing machine technology has obtained large development, abroad compares representational scholar
With the TSTM mainly having Kovler, Switzerland W+B, Tokyo University of mechanism, domestic mainly have Tsing-Hua University and Wuhan University of Technology
TSTM etc..Measurement means with regard to deformation also differ from one another, and with regard to surveying the sensor of deformation, the TSTM except Wuhan science and engineering selects
Outside Laser Measuring displacement transducer, other unit is all from LVDT as displacement transducer.Sensor is mainly distributed on concrete examination
The left and right sides of part, represents the deformation of concrete with the mean value of both sides deformation, but often due to eccentricity issues, both sides
Deformation-sensor measured value gap is larger, produces impact to the reliability of measurement result.
In addition, most TSTM are all to represent, with the active chuck displacement of measurement, the deformation that concrete occurs, W+B company
Although TSTM employs the deformation that flush type directly surveys concrete, because its side template is not disengagable, the deformation of concrete
By the inhibition of side template, deform the restriction effect by being also subject to side template during burying bar transmission, temporarily simultaneously
The direct measurement of concrete deformation is also difficult to.
Due to all controlling the temperature of concrete sample at present using the means of temperature control template or subenvironment case, survey deformation
Sensor be all in laboratory environment, with the experimental situation of concrete sample and differ.When variation of ambient temperature, position
The deformation that displacement sensor records is not only just the deformation of concrete, further comprises the deformation that temperature change causes.
Generally, current domestic and international TSTM deformation measurement means are due to measuring the displacement of active chuck and non-immediate survey
Determine the deformation of concrete, survey deformation-sensor is affected by variation of ambient temperature, stress bias two side senser measured value gaps are larger
Etc. reason, measured deformation result error is very big, or even can obtain experimental phenomena and the conclusion of mistake.
Utility model content
The utility model is intended at least solve one of technical problem in correlation technique to a certain extent.For this reason, this reality
With new propose a kind of can direct measurement concrete deformation concrete temperature stress testing machine, described concrete temperature stress
Testing machine can direct measurement concrete deformation, measurement more accurate.
According to of the present utility model can direct measurement concrete deformation concrete temperature stress testing machine, including：Body,
Described body is provided with multiple mobilizable templates, and multiple described template cooperations limit the die cavity being suitable to place concrete block；
Upper deformation measuring system, described upper deformation measuring system includes：Two upper pre-buried bars, two described pre-buried bars are located at described mould
Above chamber, the lower end of two described pre-buried bars is respectively equipped with the built-in fitting being adapted to extend in described concrete block；Upper sensor,
Described upper sensor is located at the top of one of described pre-buried bar；On extend bar, one end of described bar of extending with described on
Sensor is connected, described on the extend other end of bar be connected with pre-buried bar upper described in other in which.
According to concrete temperature stress testing machine of the present utility model, can direct measurement concrete deformation, measurement is accurately
Property high.
In addition, it is special to have, according to concrete temperature stress testing machine of the present utility model, the technology added as follows
Levy：
According to some embodiments of the present utility model, also include two side deformation measuring systems, two side deformation measurement systems
System is respectively provided at the both sides of described die cavity, and each described side deformation measuring system includes：The pre-buried bar in two sides, two described sides are pre-
Bury bar one end and be respectively equipped with the built-in fitting being adapted to extend in described concrete block；Side senser, described side senser is located at wherein
The other end of the pre-buried bar in one described side；Extend bar in side, extend one end of bar of described side is connected with described side senser, described side
The other end bar pre-buried with side described in other in which of bar of extending is connected.
According to some embodiments of the present utility model, each described side deformation measuring system also includes flexible adjustment assembly,
Described flexible adjustment assembly includes：Two threaded collars, two described threaded collars are spaced apart and are set on the pre-buried bar in described side
And adjustable along the axial location of the pre-buried bar in described side, the described threaded collar of neighbouring described template only supports the outside of described template
Face；Adjust spring, described regulation spring is set on the pre-buried bar in described side and is only against between two described threaded collars.
According to some embodiments of the present utility model, the radial section of each described built-in fitting is formed as cross.
According to some embodiments of the present utility model, also include positioning tool, described positioning tool is located on described body,
Described positioning tool includes the upper keeper for positioning to described upper deformation measuring system and is used for two described sides deformation
Two side keepers that measuring system positions respectively.
According to some embodiments of the present utility model, described upper keeper includes two native font locating racks, two native words
Shape positioning is erected at the two ends of described upper deformation measuring system, and each described soil font locating rack includes：Two connecting rods, two
Connecting rod is be arranged in parallel and is connected with body；Locating rod, described locating rod is connected with two described connecting rods, described locating rod
External part and described pre-buried bar or described on the extend other end of bar be connected.
According to some embodiments of the present utility model, each described side deformation measuring system passes through corresponding described side positioning
Part is connected with described body elasticity, and each described side keeper described includes：At least three height adjustment bolt, at least three institutes
State height adjustment bolt to extend along described side the axially spaced setting of bar, each described height adjustment bolt can up and downly
It is connected with described body；At least three elastic components, the upper end of each described elastic component and corresponding described height adjustment bolt phase
Even, the lower end bar pre-buried with described side of one of described elastic component be connected and the lower end of at least one described elastic component with described
Side extend bar be connected.
Additional aspect of the present utility model and advantage will be set forth in part in the description, partly will be from explained below
In become obvious, or recognized by practice of the present utility model.
Brief description
Fig. 1 is the part-structure top view of the concrete temperature stress testing machine according to the utility model embodiment；
Fig. 2 is the part-structure front view of the concrete temperature stress testing machine according to the utility model embodiment；
Fig. 3 is the sectional view in A-A direction along the line in Fig. 2.
Reference：Body 1；Sensor locating support 2；Native font locating rack 3；Side senser 4；Extend bar 5 in side；Upload
Sensor 6；Upper pre-buried bar 7；On extend bar 8；Elastic component 9；Height adjustment bolt 10；Built-in fitting 11；Threaded collar 12；Adjust spring
13.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of described embodiment is shown in the drawings.Below by
The embodiment being described with reference to the drawings is exemplary it is intended to be used for explaining the utility model, and it is not intended that new to this practicality
The restriction of type.
Describe in detail below in conjunction with the accompanying drawings according to the utility model embodiment can direct measurement concrete deformation coagulation
Soil temperature degree pressure tester.
Referring to figs. 1 to shown in Fig. 3, according to the utility model embodiment can direct measurement concrete deformation coagulation soil temperature
Degree pressure tester includes body 1 and upper deformation measuring system, upper deformation measuring system include two upper pre-buried bars 7, on extend
Bar 8 and upper sensor 6.
Body 1 is provided with multiple template, and multiple template cooperation limits die cavity, can pour into a mould concrete and form examination in die cavity
The concrete block tested.Multiple template can be movable with respect to body 1, thus can realize form removal after the concrete is cured.Two
Individual pre-buried bar 7 is located above die cavity, and two upper built-in fittings 11 are spaced apart setting, at position caused by A in set location such as Fig. 1.
On each, the lower end of pre-buried bar 7 is provided with built-in fitting 11, and when being provided with concrete block in die cavity, built-in fitting 11 can stretch into concrete
In block, upper sensor 6 is located at the top of one of pre-buried bar 7, one end (for example, right side shown in Fig. 1 of bar 8 of above extending
End) it is connected with upper sensor 6, wherein, upper pre-buried bar 7 can be provided with sensor stand 2, upper sensor 6 can be arranged on biography
On sensor bracket 2, bar 8 of above extending can be located on sensor stand 2, and the one end of bar 8 of above extending is (for example, shown in Fig. 1
Left end) it is connected with bar 7 pre-buried in other in which.
According to the concrete temperature stress testing machine of the utility model embodiment, by being provided with the upper pre- of built-in fitting 11
Bury bar 7, on extend bar 8 and upper sensor 6, can directly drive pre-buried bar 7 mobile during concrete deformation, and by upper sensing
Device 6 detects, and template can be with the demoulding, and the impact to concrete deformation is less, it is possible to achieve by upper in concrete block
The true strain that bar measures concrete is directly buried on surface, and the systematic error producing during reducing displacement transfer, with measurement activity
The method of the displacement of chuck is compared, and can directly measure the practical distortion of concrete, and the result recording is more direct and precision is higher.
Further, two sides can also be included according to the concrete temperature stress testing machine of the utility model embodiment to become
Shape measuring system, two side deformation measuring systems are respectively provided at the both sides of die cavity, and each side deformation measuring system includes two sides
Extend bar 5 in pre-buried bar, side senser 4 and side.One end of the pre-buried bar in each side is provided with built-in fitting 11, and side senser 4 is located at wherein
The other end of the pre-buried bar in one side, when being provided with concrete block in die cavity, built-in fitting 11 can stretch in concrete block.Extend in side
One end of bar 5 is connected with side senser 4, and the extend other end bar pre-buried with other in which side of bar 5 of side is connected.Wherein, side is pre-
Bury and sensor stand 2 can be provided with bar, side senser 4 can be arranged on sensor stand 2, side bar 5 of extending can wear
On sensor stand 2.
Thus, realize the detection of concrete deformation not only by upper deformation measuring system, two sides can also be passed through
Deformation measuring system detects to deformation, and test position is more, and deformation detection is more comprehensively and accurately.
Preferably, the radial section of each built-in fitting 11 is formed as cross.That is, it is upper pre-buried for being arranged on
For built-in fitting 11 on bar 7, carry out cutting along the axial direction perpendicular to upper pre-buried bar 7 and can form criss-cross section；Right
For the built-in fitting 11 being arranged on the pre-buried bar in side, carry out cutting along the axial direction perpendicular to the pre-buried bar in side and can form cross
The section of shape.Criss-cross built-in fitting 11 can increase contact and lifting surface area, is conducive to concrete and the compatibility of deformation burying bar,
Improve the accuracy of detection further.
Each side deformation measuring system also includes flexible adjustment assembly, and as shown in Figure 1 to Figure 3, flexible adjustment assembly includes
Two threaded collars 12 and regulation spring 13, two threaded collars 12 are respectively sleeved on the pre-buried bar in side and along the pre-buried bar in side
Axially spaced, wherein, two threaded collars 12 are adjustable along the axial location of the pre-buried bar in side so that two threaded collars 12 it
Between distance can change, the threaded collar 12 of adjacent mold plate only supports the lateral surface of template, and that is, threaded collar 12 is only against side template
Lateral surface on.Adjust spring 13 to be set on the pre-buried bar in side and be only against between two threaded collars 12.Thus, it is possible to it is logical
Overregulate two threaded collars 12 and change the elastic force adjusting spring 13, it is to avoid side template disengages the shadow of offside pre-buried bar position
Ring, improve the accuracy of deformation detection further.
According to some embodiments of the present utility model, concrete temperature stress testing machine also includes positioning tool, positions work
It is installed on body 1, positioning tool includes the upper keeper for positioning to upper deformation measuring system and surveys for offside deformation
The side keeper of amount system positioning.Thus, it is possible to by upper keeper and side keeper realize respectively upper deformation measuring system and
The accurate installation of side deformation measuring system, is further ensured that the accuracy of detection.
It is understood that the structure of upper keeper and side keeper is formed as multiple, alternatively, upper keeper includes
Two native font locating racks 3, two native font locating racks 3 are located at the two ends of deformation measuring system, with to upper deformation measurement system
Positioning is realized at two of system, makes deformation measuring system integral installation more accurate.Each native font locating rack 3 includes two connecting rods
And locating rod.Two connecting rods are be arranged in parallel and are connected with body 1, and locating rod is connected with two connecting rods, the stretching of locating rod
Go out the end head of font (i.e. native) and upper pre-buried bar 7 or on the extend other end of bar 8 be connected.
Specifically, one of locating rod is connected with upper pre-buried bar 7, another and the bar of above extending in two locating rods
8 are connected.As shown in figure 1, the locating rod being located at right side is connected with upper pre-buried bar 7, the locating rod positioned at left side and bar 8 phase of above extending
Even.Thus, it is possible to two locating rods are with reference to the positioning realizing upper deformation measuring system two ends it is ensured that upper pre-buried bar 7 and upper
The accurate installation of bar 8 grade of extending.The keeper of this native font not only can reduce material usage, and structure is more firm, fixed
Position effect is good.
Side deformation measuring system includes two, and side keeper also includes two, and each side deformation measuring system passes through to correspond to
Side keeper and body 1 elasticity be connected.As shown in figure 3, each side keeper includes at least three height adjustment bolt 10 He
At least three elastic components, at least three height adjustment bolt 10 and at least three elastic components correspond.At least three height are adjusted
Section bolt 10 is extended the axially spaced of bar 5 along side, and each height adjustment bolt 10 can be connected with body 1 up and downly.Can
Selection of land, body 1 can be threaded hole, and each height adjustment bolt 10 is threaded in corresponding screw thread in the hole, and each is high
Degree regulating bolt 10 can rotate, and realizes the regulation of upper-lower position.The upper end of each elastic component and corresponding height adjustment bolt
10 are connected, the lower end of one of elastic component bar pre-buried with side is connected and extends in the lower end of at least one elastic component and side bar 5
It is connected.
For example, as shown in Figure 1 to Figure 3, each side keeper includes four height adjustment bolt 10 and four elastic components, bullet
Property part is the spring vertically extending, and four elastic components are arranged spaced apart in the longitudinal direction, an elastic component above
Bar pre-buried with side is connected, and three elastic components below and side bar 5 of extending is connected, and making side extend bar 5 can be corresponding with the pre-buried bar in side
Mobile.
Thus, it is possible to realize the elastic connection of side deformation measuring system and body 1 by elastic component, facilitate the tune of testing machine
Section and installation, and it is more beneficial for the detection deforming.
Describe below and concrete deformation is carried out using the concrete temperature stress testing machine according to the utility model embodiment
The test method of test, this test method comprises the following steps：
S1：Adjust described template and the pre-buried bar of described pre-buried bar 7 and described side is installed.
S2：Casting concrete vibrating in described die cavity, makes described built-in fitting 11 be located in concrete block.
S3：Extend bar 5 and side senser 4 in extend on adjustment is described bar 8, upper sensor 6, side.
S4：The demoulding after the concrete is cured, detects the change of concrete using described upper sensor 6 and described side senser 4
Shape, detection and analysis obtains testing Deformation control value, to realize feedback control.
Test method according to the utility model embodiment can realize the direct detection of concrete deformation, and detection is more comprehensively
And accurately.
Further, in step s 4, temperature T of initial time installed in record0Environment temperature T with experimental staget, and
Using formula ε=ε0-α(Tt-T0) upper sensor 6 and the surveyed deformation of side senser 4 are modified, wherein, ε0For temperature adjustmemt
Before the concrete deformation that records, α is the comprehensive thermal coefficient of expansion of testing machine.Thus, it is possible to the side using temperature self-compensation correction
Formula, eliminates the impact to surveyed deformation values for the variation of ambient temperature, and measured value long-time stability are good.
Further, in step s 4, if Shu is εB-εCShu/(Shu εB+εCShu) ＞ 20%, then with εAAs test Deformation control
Value realizes feedback control；Conversely, then with (εA+εB+εC)/3 are as test Deformation control value, wherein, εA、εBAnd εCOn representing respectively
Sensor 6 and two side sensers 4 are temperature compensated revise after deformation values.Thus, real using three sets of deformation measurement
Switching of now living carries out feedback control testing machine, and control action is good.
Fig. 1 to Fig. 3 shows that of the concrete temperature stress testing machine according to the utility model embodiment specifically shows
Example.As shown in Figure 1 to Figure 3, vibrate the stage in concreting, can install with the pre-buried bar position of the upper surface of concrete block
Pre-buried bar 7, and connect criss-cross built-in fitting 11 in the lower end of upper pre-buried bar 7, pass through the upper keeper positioning of native font simultaneously
The position of upper pre-buried bar 7.Carry out positioning peace by comprising the pre-buried bar of side keeper offside of elastic component and height adjustment bolt 10
Dress；Tighten threaded collar 12 and adjust the stress of spring 13 it is ensured that while the stage of vibrating buries bar and stablize, multiple template, spy
It is not that side template will not occur spillage phenomenon.As shown in Fig. 2 sensor 6 and bar 8 of above extending are provided with upper pre-buried bar 7, such as
Shown in Fig. 1, the pre-buried bar in side is installed side senser 4 and side and extends bar 5, a whole set of deformation measurement of concrete temperature stress testing machine
System is as illustrated in fig. 1 and 2.
The demoulding of side template and end template can be carried out after concrete hardening.After the side template demoulding, adjust loose threaded collar
12, discharge and adjust spring 13 elastic force it is ensured that the deformation of the pre-buried bar in side transmission is not limited it is ensured that side is pre-buried by side template
Bar and the uniformity of concrete deformation, improve the accuracy of deformation detection further.
Temperature T of deformation measuring system initial time can be installed using temperature sensor record0Ring with experimental stage
Border temperature Tt；Using formula：ε=ε0-α(Tt-T0) upper sensor 6 and the surveyed deformation of side senser 4 are modified.Wherein, α
For the comprehensive thermal coefficient of expansion of testing machine, including the indium steel bar in grating displacement sensor and survey deformation gauge length, can pass through
Actual measurement determines.
When carrying out feedback control using three sets of deformation measurement realization work switchings, as Shu εB-εCShu/(Shu εB+εCShu) ＞
20%, i.e. εBAnd εCEccentric degree be less than 20%, then with εARealize feedback control as test Deformation control value；If conversely, Shu
εB-εCShu/(Shu εB+εCWhen Shu)≤20%, i.e. εBAnd εCEccentric degree be more than 20% when, then with (εA+εB+εC)/3 become as test
Shape controlling value.
In sum, it is a kind of in temperature stress examination according to the concrete temperature stress testing machine of the utility model embodiment
Testing in machine system is not affected by variation of ambient temperature, can directly measure the measuring instrument of concrete deformation, is that one kind can directly be surveyed
Measure concrete deformation and there is the concrete temperature stress testing machine of temperature compensation function, can effectively overcome in correlation technique
Concrete temperature stress testing machine surveyed deformation the true strain of non-concrete, certainty of measurement high the problems such as, concrete tries
Part and deformation measuring system are in same experimental enviroment, can self-compensated temperature deformation impact, and directly measure concrete
True strain, has high precision, the good advantage of long-time stability.
Other of concrete temperature stress testing machine according to the utility model embodiment constitute and operate for ability
It is knowable for the those of ordinary skill in domain, here is not described in detail.
In description of the present utility model it is to be understood that term " " center ", " on ", D score, "front", "rear", " perpendicular
Directly ", the orientation of instruction such as " level ", " top ", " bottom ", " interior ", " outward " or position relationship are based on orientation shown in the drawings or position
Put relation, be for only for ease of and describe the utility model and simplify description, rather than instruction or the device or the element that imply indication
Must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
In description of the present utility model, " multiple " are meant that at least two, such as two, three etc., unless otherwise
Clearly specifically limit.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " Gu
Fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be
It is mechanically connected or electrically connect or can communicate each other；Can be to be joined directly together it is also possible to pass through the indirect phase of intermediary
Even, can be the connection of two element internals or the interaction relationship of two elements, limit unless otherwise clear and definite.For this
For the those of ordinary skill in field, concrete meaning in the utility model for the above-mentioned term can be understood as the case may be.
In the description of this specification, reference term " embodiment ", " specific embodiment ", " example " or " specific example " etc.
Description mean that specific features with reference to this embodiment or example description, structure, material or feature are contained in the utility model
At least one embodiment or example in.In this manual, phase is necessarily directed to the schematic representation of above-mentioned term
Same embodiment or example.And, the specific features of description, structure, material or feature can be in any one or more enforcements
Combine in an appropriate manner in example or example.Additionally, in the case of not conflicting, those skilled in the art can be by this
The feature of the different embodiments described in specification or example and different embodiment or example is combined and combines.
Although of the present utility model embodiment has been shown and described above it is to be understood that above-described embodiment is
Exemplary it is impossible to be interpreted as that those of ordinary skill in the art is in scope of the present utility model to restriction of the present utility model
Interior above-described embodiment can be changed, change, replacing and modification.
Claims (7)
1. a kind of can direct measurement concrete deformation concrete temperature stress testing machine, including：
Body, described body is provided with multiple mobilizable templates, and multiple described template cooperations limit and are suitable to place concrete
The die cavity of block；
Upper deformation measuring system, described upper deformation measuring system includes：
Two upper pre-buried bars, two described pre-buried bars are located above described die cavity, and the lower end of two described pre-buried bars is respectively
It is provided with the built-in fitting being adapted to extend in described concrete block；
Upper sensor, described upper sensor is located at the top of one of described pre-buried bar；
On extend bar, one end of described bar of extending is connected with described upper sensor, described on extend bar the other end with described its
In another described pre-buried bar be connected.
2. concrete temperature stress testing machine according to claim 1 is it is characterised in that also include two side deformation measurements
System, two side deformation measuring systems are respectively provided at the both sides of described die cavity, and each described side deformation measuring system includes：
The pre-buried bar in two sides, one end of the pre-buried bar in two described sides be respectively equipped be adapted to extend into pre-buried in described concrete block
Part；
Side senser, described side senser is located at the other end of the pre-buried bar in one of described side；
Extend bar in side, extend one end of bar of described side is connected with described side senser, described side extend bar the other end with wherein
The pre-buried bar in another described side is connected.
3. concrete temperature stress testing machine according to claim 2 is it is characterised in that each described side deformation measurement system
System also includes flexible adjustment assembly, and described flexible adjustment assembly includes：
Two threaded collars, two described threaded collars are spaced apart and are set on the pre-buried bar in described side and along the pre-buried bar in described side
Axial location is adjustable, and the described threaded collar of neighbouring described template only supports the lateral surface of described template；
Adjust spring, described regulation spring is set on the pre-buried bar in described side and is only against between two described threaded collars.
4. concrete temperature stress testing machine according to claim 2 is it is characterised in that the radial direction of each described built-in fitting
Section is formed as cross.
5. concrete temperature stress testing machine according to claim 2 is it is characterised in that also including positioning tool, described
Positioning tool is located on described body, and described positioning tool includes the upper keeper for positioning to described upper deformation measuring system
With two side keepers for positioning respectively to two described side deformation measuring systems.
6. concrete temperature stress testing machine according to claim 5 is it is characterised in that described upper keeper includes two
Native font locating rack, two native font positioning are erected at the two ends of described upper deformation measuring system, each described soil font positioning
Frame includes：
Two connecting rods, two described connecting rods are be arranged in parallel and are connected with body；
Locating rod, described locating rod is connected with two described connecting rods, the external part of described locating rod and described pre-buried bar or
Extend on described bar the other end be connected.
7. concrete temperature stress testing machine according to claim 5 is it is characterised in that each described side deformation measurement system
System is connected with described body elasticity by corresponding described side keeper, and each described side keeper described includes：
At least three height adjustment bolt, height adjustment bolt described at least three opens up along the extend axially spaced-apart of bar of described side
Put, each described height adjustment bolt can be connected with described body up and downly；
At least three elastic components, the upper end of each described elastic component is connected with corresponding described height adjustment bolt, one of
Bar phase that the lower end of described elastic component bar pre-buried with described side is connected and extends in the lower end of at least one described elastic component and described side
Even.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620722524.6U CN205941547U (en) | 2016-07-08 | 2016-07-08 | But concrete temperature stress testing machine that direct measurement concrete warp |
| US15/404,338 US9891208B2 (en) | 2016-07-08 | 2017-01-12 | Concrete temperature stress testing machine system and concrete temperature stress testing method |
| US15/855,526 US10060901B2 (en) | 2016-07-08 | 2017-12-27 | Concrete temperature stress testing machine system and temperature deformation self-compensation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620722524.6U CN205941547U (en) | 2016-07-08 | 2016-07-08 | But concrete temperature stress testing machine that direct measurement concrete warp |
Publications (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093358A (en) * | 2016-07-08 | 2016-11-09 | 清华大学 | Can directly measure concrete temperature stress testing machine and the method for concrete deformation |
| US9891208B2 (en) | 2016-07-08 | 2018-02-13 | Tsinghua University | Concrete temperature stress testing machine system and concrete temperature stress testing method |
| CN110146687A (en) * | 2019-05-21 | 2019-08-20 | 哈尔滨工业大学 | Detection device and method for concrete early deformation under various environment temperatures |
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2016
- 2016-07-08 CN CN201620722524.6U patent/CN205941547U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093358A (en) * | 2016-07-08 | 2016-11-09 | 清华大学 | Can directly measure concrete temperature stress testing machine and the method for concrete deformation |
| US9891208B2 (en) | 2016-07-08 | 2018-02-13 | Tsinghua University | Concrete temperature stress testing machine system and concrete temperature stress testing method |
| US10060901B2 (en) | 2016-07-08 | 2018-08-28 | Tsinghua University | Concrete temperature stress testing machine system and temperature deformation self-compensation method |
| CN110146687A (en) * | 2019-05-21 | 2019-08-20 | 哈尔滨工业大学 | Detection device and method for concrete early deformation under various environment temperatures |
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