CN204128895U - The constant compressive stress charger of concrete - Google Patents
The constant compressive stress charger of concrete Download PDFInfo
- Publication number
- CN204128895U CN204128895U CN201420498073.3U CN201420498073U CN204128895U CN 204128895 U CN204128895 U CN 204128895U CN 201420498073 U CN201420498073 U CN 201420498073U CN 204128895 U CN204128895 U CN 204128895U
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- concrete
- compressive stress
- platen
- test block
- center platen
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- 238000012360 testing method Methods 0.000 claims abstract description 42
- 238000012856 packing Methods 0.000 claims abstract description 9
- 230000005484 gravity Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 238000011160 research Methods 0.000 abstract description 4
- 238000004088 simulation Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model is about the constant compressive stress charger of a kind of concrete, relate to research and the field tests of endurance performance of concrete, fundamental purpose, when can bear separately constant compressive stress in simulation actual environment by this device, measures concrete durability exactly.The technical scheme of main employing is: the constant compressive stress charger of concrete, comprising: four pull bars, and sequence from low to uper part is set on lower platen, limit valve, center platen, spring, top board, packing ring and nut on pull bar; Distance between lower platen and center platen is greater than the height of concrete test block; Limit valve, packing ring and nut arrange one on every root pull bar, and limit valve does not add front center platen, spring and the top board moved down due to gravity of concrete test block for fixing; Below center platen, arrange a contact component, one end of this contact component contacts with the lower surface of center platen, and the other end contacts with concrete test block.
Description
Technical field
The utility model relates to research and the field tests of endurance performance of concrete, is specifically related to the constant compressive stress charger of a kind of concrete.
Background technology
Concrete performance depends on the quantity of pore in cement slurry, size and distribution to a great extent, the performance at aggregate performance and slurry and aggregate interface.The result of the degradation failure of the actual in commission endurance performance of concrete normally multiple damage factors such as load and environmental factor coupling, degradation failure process is again a long process.Therefore, how Simulated Service concrete is under actual stress horizontality, and under the effect of research various factors coupling, concrete endurance quality deterioration law, failure mechanism and preventive measure become current important research direction.
Charger used at present is generally made up of two pull bars, one piece of lower platen, one piece of top board, some roller bearings, nut and spring, need in advance at concrete sample surface line-plotting to determine roller positions, measure spring rate again, by adjustment spring deformation proof stress horizontal size, but two pull bars stress level that device can be loaded and stability limited; Spring bears pressure for a long time or applies itself easily to produce distortion when pressure is excessive simultaneously, and cause stress relaxation, be difficult to apply constant stress, if regularly adjust device, owing to dismantling inconvenience, the step of this adjustment is very loaded down with trivial details; And in advance at concrete sample surface line-plotting to determine that this way of roller positions inherently exists personal error, and also can produce displacement in loading procedure, this can make concrete unbalance stress, affects the accuracy of endurancing result.
In addition, what these chargers applied is all bending load, the concrete sample of stand under load bears compressive stress and these two kinds of distinct load actions of tension in neutral line both sides, generally both are considered as same factor to consider when test result analysis, but also there is the military service concrete bearing separately compressive stress and environmental factor coupling in actual environment, such as bridge pier, therefore, these chargers cannot simulate the situation of bearing separately constant compressive stress in actual environment, more cannot meet and be convenient to the requirement such as dismounting, the maintenance that changes the outfit, accurately measurement.
Summary of the invention
In view of this, the utility model embodiment provides a kind of concrete constant compressive stress charger, fundamental purpose is when can bear separately constant compressive stress in simulation actual environment by this device, measure concrete durability exactly, make this device have simultaneously and be convenient to dismantle, change the outfit the feature safeguarded.
For achieving the above object, the utility model mainly provides following technical scheme:
The utility model embodiment provides the constant compressive stress charger of a kind of concrete and comprises:
Four pull bars, and sequence from low to uper part is set on lower platen, limit valve, center platen, spring, top board, packing ring and nut on pull bar.
Described lower platen is for placing concrete test block, and the distance between described lower platen and center platen is greater than the height of described concrete test block.
Described limit valve, packing ring and nut arrange one on every root pull bar, and described limit valve does not add front center platen, spring and the top board moved down due to gravity of concrete test block for fixing.
A contact component is set below described center platen, one end of this contact component contacts with the lower surface of described center platen, the other end contacts with concrete test block, this contact component be used in pressure process by the compressive stress Transmit evenly of center platen to concrete test block, make concrete test block uniform force.
The constant compressive stress charger of foregoing concrete, described contact component is sphere roller bearing; The top of described sphere roller bearing is semicircle, bottom is rectangle; Described center platen center position has one to be less than described semicircular groove, is highly the half of center platen thickness, is less than described semicircle radius; The semi-circular portion major part of described sphere roller bearing embeds in center platen also can freely rotate wherein, and described rectangle lower surface contacts with described test block.
The constant compressive stress charger of foregoing concrete, described contact component is elastomeric element; Described elastomeric element comprises base and is arranged on the elastic mechanism of this base upper surface; The lower surface of described base fully contacts with described concrete test block; The top of described elastic mechanism contacts with the lower surface of described center platen.
The constant compressive stress charger of foregoing concrete, described pull bar is provided with strainometer, and described strainometer is arranged between described center platen and lower platen.
The constant compressive stress charger of foregoing concrete, described spring is disk spring, and the quantity on its every root pull bar is 40.
The constant compressive stress charger of foregoing concrete, described top board is divided into upper and lower two parts: the upper surface of the first half when described nut is screwed to minimum higher than the upper surface of described four pull bars; The latter half has 4 circular holes matched with described four pull bars.
The constant compressive stress charger of foregoing concrete, in this concrete constant compressive stress charger, nut used is loosen nut.
The constant compressive stress charger of the concrete that the utility model embodiment provides, top board is fixed by nut and four pull bars, the elastic deformation accumulation of energy of recycling disk spring, the constant compressive stress of large load can be loaded to concrete test block, contact component simultaneously by arranging below center platen, the constant compressive stress that this device is loaded loads more stable, after have employed limit valve, make the placement of concrete test block more convenient, because whole device is connected in series by four pull bars to form, make the one-piece construction of this device simple, be convenient to dismounting and maintenance.Load constant compressive stress by this device to concrete test block, can simulate the real working condition of the constant compressive stress of varying level in Practical Project, the data result that this device is tested out has project reference value more.
Accompanying drawing explanation
The structural representation of the constant compressive stress charger of concrete that Fig. 1 provides for the utility model embodiment;
The outboard profile of the constant compressive stress charger sphere roller bearing that Fig. 2 provides for the utility model embodiment and vertical view;
The vertical view of the constant compressive stress charger center platen that Fig. 3 provides for the utility model embodiment and outboard profile;
The another kind of concrete constant compressive stress charger structural representation that Fig. 4 provides for the utility model embodiment;
The outboard profile of the constant compressive stress charger pull bar that Fig. 5 provides for the utility model embodiment;
The vertical view of the constant compressive stress charger lower platen that Fig. 6 provides for the utility model embodiment and outboard profile;
The outboard profile of the constant compressive stress charger top board that Fig. 7 provides for the utility model embodiment and vertical view;
The outboard profile of the constant compressive stress charger limit valve that Fig. 8 provides for the utility model embodiment and vertical view.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail; but drawings and Examples are all only for illustration of the technical solution of the utility model; wherein the concrete structure, connected mode etc. of each parts all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model or improvement, all should not get rid of outside protection domain of the present utility model.
The utility model embodiment provides the constant compressive stress charger of a kind of concrete, and as shown in Figure 1, this device comprises:
Four pull bars 8, and sequence from low to uper part is set on lower platen 9, limit valve 7, center platen 5, spring 4, top board 3, packing ring 2 and nut 1 on pull bar;
Lower platen 9 is for placing concrete test block, and the distance between described lower platen 9 and middle pressure 5 plate is greater than the height of described concrete test block;
Limit valve 7, packing ring 2 and nut 1 arrange one on every root pull bar, limit valve 7 for fixing do not add concrete test block before the center platen 5, spring 4 and the top board 3 that move down due to gravity;
A contact component 6 is set below center platen 5, one end of this contact component contacts with the lower surface of described center platen 5, the other end contacts with concrete test block, and this contact component 6, for the compressive stress of center platen being passed to concrete test block in pressure process, makes concrete test block uniform force.
Contact component described in the constant compressive stress charger of this concrete can be sphere roller bearing, also can be elastomeric element, concrete the utility model embodiment does not limit this, as long as it can play one end and contact with concrete test block upper surface, the other end contacts with center platen, when center platen moves downward, can by complete for compressive stress Transmit evenly to concrete test block.
When described contact component is sphere roller bearing, as shown in Figure 2, the top of this sphere roller bearing is semicircle, bottom is rectangle, one is had to be less than described semicircular groove at center platen 5 lower surface center position, as shown in Figure 3, the height of this groove is the half of center platen thickness, and be less than described semicircle radius, the semicircle of sphere roller bearing 6 major part is embedded in center platen 5 also can freely rotate wherein, the lower surface of sphere roller bearing 6 lower rectangular contacts with concrete test block upper surface.
When described contact component is elastomeric element, as shown in Figure 4, the contact component arranged below center platen 5 can be an elastomeric element, this elastomeric element comprises base and is arranged on the elastic mechanism of this base upper surface, wherein the lower surface of base fully contacts with concrete test block, and the top of elastic mechanism contacts with the lower surface of center platen 5.
Four pull bars of the constant compressive stress charger of above-mentioned concrete are provided with strainometer 20, and as shown in fig. 1, strainometer 20 is pasted on the pull bar between center platen 5 and lower platen 9.
Further, above-mentioned concrete constant compressive stress charger spring used is disk spring, this disk spring has another name called Belleville washer, they are different from general spring, the principal feature of this disk spring is: elastic modulus is high, stroke is short, combinationally use conveniently, maintenance changes the outfit easy and security performance is high, especially can bear great load in less space.The sex change of disk spring unit volume can be comparatively large, and when particularly adopting stack combinations, due to surface friction drag effect, the effect absorbing impact and dissipation energy is obvious.This device is according to after load application range computation, every root pull bar can use the disk spring stack combinations of 40 40*20.4*1.5*1.15mm use, but concrete the utility model embodiment does not also limit this, the quantity of disk spring can be set according to concrete user demand, such as 30, or 35 etc.
In the constant compressive stress charger of above-mentioned concrete, four pull bars 8 pass from the circular hole lower platen 9 four angles respectively, pull bar 8 bottom one section of diameter is greater than the part above it, as shown in Figure 5, and this section is highly less than the half of lower platen 9 thickness, the circular hole on lower platen 9 four angles matches with pull bar 8 lower end, for aperture that is large, upper part, the aperture of lower part is little, as shown in Figure 6, the two uses to reach the effect interfixed after wearing and connecting; Center platen 5 and top board 3 four angles are equipped with circular hole, aperture is greater than the diameter of pull bar 8 upper part, limit valve 7, center platen 5, disk spring 4 and top board 3 are passed from the upper end of pull bar 8 successively, be sleeved between four pull bars 8 and also can slide up and down, the upper end of pull bar 8 is fixed with packing ring 2 and nut 1, and the upper edge of pull bar 8 is higher than the upper edge of nut 1.
As shown in figure 5 and figure 7, in Fig. 5, pull bar 8 upper end has one section of screw thread to match with nut 1, this segment length threaded is less than the overall height of top board 3 in Fig. 7, can be permanently connected in pressure process with the lower surface of the upper surface and pressure testing machine top board that ensure nut 1 this device top board 3 when being screwed to minimum, thus carry out pressurized operation by means of pressure testing machine.
As shown in Fig. 8 and Fig. 5, in Fig. 8, the Circularhole diameter at limit valve 7 center is consistent with the diameter of pull bar 8 upper end in Fig. 5, and both match, and limit valve 7 is fixed on pull bar 8 by the screw of side.
In the constant compressive stress charger of above-mentioned concrete, nut 1 used is retainer nut.
The constant compressive stress charger of the concrete that the utility model embodiment provides, top board is fixed by nut and four pull bars, the elastic deformation accumulation of energy of recycling disk spring, the constant compressive stress of large load can be loaded to concrete test block, contact component simultaneously by arranging below center platen, the constant compressive stress that this device is loaded loads more stable, after have employed limit valve, make the placement of concrete test block more convenient, simultaneously in the pressurization of device and the process of test, owing to have employed strainometer, make the stress Measure Precision of whole device higher, and can ensure the stress of concrete test block loading more stable, the loosen nut that this device adopts also reduces the stress relaxation phenomenon that steel bar corrosion causes, because whole device is connected in series by four pull bars to form, make the one-piece construction of this device simple, be convenient to dismounting and maintenance.Load constant compressive stress by this device to concrete test block, can simulate the real working condition of the constant compressive stress of varying level in Practical Project, the data result that this device is tested out has project reference value more.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (7)
1. the constant compressive stress charger of concrete, is characterized in that, comprising:
Four pull bars, and sequence from low to uper part is set on lower platen, limit valve, center platen, spring, top board, packing ring and nut on pull bar;
Described lower platen is for placing concrete test block, and the distance between described lower platen and center platen is greater than the height of described concrete test block;
Described limit valve, packing ring and nut arrange one on every root pull bar, and described limit valve does not add front center platen, spring and the top board moved down due to gravity of concrete test block for fixing;
A contact component is set below described center platen, one end of this contact component contacts with the lower surface of described center platen, the other end contacts with concrete test block, this contact component be used in pressure process by the compressive stress Transmit evenly of center platen to concrete test block, make concrete test block uniform force.
2. the constant compressive stress charger of concrete according to claim 1, is characterized in that, described contact component is sphere roller bearing;
The top of described sphere roller bearing is semicircle, bottom is rectangle;
Described center platen center position has one to be less than described semicircular groove, and the height of this groove is the half of center platen thickness, and is less than described semicircular radius;
The semicircle major part of described sphere roller bearing embeds in center platen also can freely rotate wherein, and described rectangle lower surface contacts with described concrete test block.
3. the constant compressive stress charger of concrete according to claim 1, is characterized in that, described contact component is elastomeric element;
Described elastomeric element comprises base and is arranged on the elastic mechanism of this base upper surface; The lower surface of described base fully contacts with described concrete test block; The top of described elastic mechanism contacts with the lower surface of described center platen.
4. the constant compressive stress charger of the concrete according to any one of claim 1-3, is characterized in that, described pull bar is provided with strainometer, and described strainometer is arranged between described center platen and lower platen.
5. the constant compressive stress charger of concrete according to claim 4, is characterized in that, described spring is disk spring, and the quantity on its every root pull bar is 40.
6. the constant compressive stress charger of the concrete according to any one of claim 1-3, it is characterized in that, described top board is divided into upper and lower two parts:
The upper surface of the first half when described nut is screwed to minimum higher than the upper surface of described four pull bars;
The latter half has 4 circular holes matched with described four pull bars.
7. the constant compressive stress charger of the concrete according to any one of claim 1-3, is characterized in that, in concrete constant compressive stress charger, nut used is loosen nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420498073.3U CN204128895U (en) | 2014-09-01 | 2014-09-01 | The constant compressive stress charger of concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420498073.3U CN204128895U (en) | 2014-09-01 | 2014-09-01 | The constant compressive stress charger of concrete |
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| CN204128895U true CN204128895U (en) | 2015-01-28 |
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| CN201420498073.3U Expired - Lifetime CN204128895U (en) | 2014-09-01 | 2014-09-01 | The constant compressive stress charger of concrete |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614218A (en) * | 2015-02-15 | 2015-05-13 | 河北联合大学 | Concrete test block loading and curing device |
| CN106644699A (en) * | 2016-11-03 | 2017-05-10 | 上海电气电站设备有限公司 | Test device and method for evaluating insulating creep characteristics of generator stator core |
| CN107219116A (en) * | 2017-06-23 | 2017-09-29 | 武汉大学 | The test system of ferroelectric material respondent behavior under the conditions of power electro thermal coupling |
| CN107561005A (en) * | 2017-09-28 | 2018-01-09 | 鹤山市鸿新经编厂有限公司 | A kind of tight device of textile pressing color fastness test clamp |
| CN107702954A (en) * | 2017-08-16 | 2018-02-16 | 西安建筑科技大学 | A kind of pressing device and method of the true hole solution of micro concrete |
| CN110320106A (en) * | 2019-08-12 | 2019-10-11 | 山西煤矿机械制造股份有限公司 | A kind of dumbbell pin factory strength test device |
| CN111075112A (en) * | 2019-11-25 | 2020-04-28 | 海南大学 | Self-resetting enhanced column base and construction and installation method thereof |
| CN112903454A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Horizontal goaf multi-row group column tensile strength testing device and method |
| CN112903452A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Device and method for testing tensile strength of multiple rows of grouped columns in horizontal goaf under influence of disturbance |
-
2014
- 2014-09-01 CN CN201420498073.3U patent/CN204128895U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614218A (en) * | 2015-02-15 | 2015-05-13 | 河北联合大学 | Concrete test block loading and curing device |
| CN106644699A (en) * | 2016-11-03 | 2017-05-10 | 上海电气电站设备有限公司 | Test device and method for evaluating insulating creep characteristics of generator stator core |
| CN107219116A (en) * | 2017-06-23 | 2017-09-29 | 武汉大学 | The test system of ferroelectric material respondent behavior under the conditions of power electro thermal coupling |
| CN107702954A (en) * | 2017-08-16 | 2018-02-16 | 西安建筑科技大学 | A kind of pressing device and method of the true hole solution of micro concrete |
| CN107561005A (en) * | 2017-09-28 | 2018-01-09 | 鹤山市鸿新经编厂有限公司 | A kind of tight device of textile pressing color fastness test clamp |
| CN110320106A (en) * | 2019-08-12 | 2019-10-11 | 山西煤矿机械制造股份有限公司 | A kind of dumbbell pin factory strength test device |
| CN111075112A (en) * | 2019-11-25 | 2020-04-28 | 海南大学 | Self-resetting enhanced column base and construction and installation method thereof |
| CN111075112B (en) * | 2019-11-25 | 2024-09-17 | 海南大学 | Self-resetting reinforced column base and construction and installation method thereof |
| CN112903454A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Horizontal goaf multi-row group column tensile strength testing device and method |
| CN112903452A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Device and method for testing tensile strength of multiple rows of grouped columns in horizontal goaf under influence of disturbance |
| CN112903452B (en) * | 2021-02-04 | 2023-10-10 | 太原理工大学 | Device and method for testing tensile capacity of multi-row group columns of horizontal goaf under influence of disturbance |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 100024 No. 1, East Lane, Chaoyang District, Beijing, Guanzhuang Patentee after: CHINA BUILDING MATERIALS ACADMEY Address before: 100024 No. 1, East Lane, Chaoyang District, Beijing, Guanzhuang Patentee before: CHINA BUILDING MATERIALS ACADEMY |
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| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190529 Address after: 100024 No. 1, East Lane, Chaoyang District, Beijing, Guanzhuang Patentee after: Beijing Zhongyanyi Engineering Technology Development Center Co.,Ltd. Address before: 100024 No. 1, East Lane, Chaoyang District, Beijing, Guanzhuang Patentee before: CHINA BUILDING MATERIALS ACADMEY |
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| TR01 | Transfer of patent right | ||
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Granted publication date: 20150128 |
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| CX01 | Expiry of patent term |