CN101776555A - Loading device for concrete durability test - Google Patents
Loading device for concrete durability test Download PDFInfo
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- CN101776555A CN101776555A CN201010101219A CN201010101219A CN101776555A CN 101776555 A CN101776555 A CN 101776555A CN 201010101219 A CN201010101219 A CN 201010101219A CN 201010101219 A CN201010101219 A CN 201010101219A CN 101776555 A CN101776555 A CN 101776555A
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Abstract
The invention discloses a loading device for a concrete durability test, which comprises a bending force application unit (1) and a stable bending force maintaining unit (2); when in loading, a concrete block to be tested is put between a bottom plate (8) and a lower horizontal plate (10); the whole stable bending force maintaining unit (2) is arranged between the base (3) and a cross beam (5) of the bending force application unit (1); and at this time, two electric push rods (7) pull down the cross beam (5) synchronously; and a pressure sensor (7) acts on the center of the upper surface of an upper horizontal plate (11). Because the bending force application unit (1) and the stable bending force maintaining unit (2) of the invention are mutually independent units, the loading device for concrete durability test can not only prevent the pressure sensor (6) and the electric push rods (7) in the bending force application unit (1) from contacting with harmful media and being damaged, but also cut the investment for the equipment of the experiments.
Description
Technical field
The present invention relates to the durability test of concrete material under the dead load condition, be specifically related to act on the bringing device of dead load on the concrete test block.
Background technology
Concrete durability research is the hot issue of field of civil engineering, and all lose efficacy, keep in repair because of its permanance every year both at home and abroad and reinforcing etc. paid a large amount of human and material resources and financial resources.Amount of literature data shows, concrete durability under the multifactor couplings such as load and corrosive solution, drying and watering cycle does not obtain fully thorough research, and, just must design supporting charger according to test target at the research of concrete durability under the multifactor coupling.
State Intellectual Property Office disclosed a kind of " concrete multi-factors durability experimental device under flexural tensile stress and the environment coupled action " (publication number is CN 101275892A) on October 1st, 2008, in this device, " bottom of pull bar (6) is connected with lower platen (9); top board (5) is passed on the top of pull bar (6) and arm-tie (2) is pressed in strain gauge (1) on the arm-tie (2) by nut (3); be provided with spring (4) between arm-tie (2) and top board (5); be provided with concrete sample (8) between top board (5) and lower platen (9); be provided with pad rod (7) between each concrete sample (8) and between concrete sample (8) and top board (5) or the lower platen (9); be provided with constant force clamping instrument (10) in the both sides of concrete sample (8), constant force clamping instrument (10) is connected with nonmetal ultrasonic tesint instrument (11)." though the disclosed technical scheme of above-mentioned patented claim " is applicable to the concrete sample of large-size and can keeps holding for a long time in the lotus process unstressed lax "; still; because electronic component such as sensor in the charger and constant force clamping instrument and instrument are one with mechanical component, so be subjected to the infringement of various factors (as temperature, various Korrosionsmediums etc.) unavoidably in the environmental experiment after loading and damage.In addition, a covering device can only carry out the experiment of one group of test block, can't carry out the experiment of multiple factor simultaneously, can prolong experimental period undoubtedly, and the experiment of carrying out multiple factor simultaneously must be purchased many cover experimental provisions, and the experiment that is increased investment is predictable.
Summary of the invention
In view of there is above-mentioned deficiency in prior art, the technical problem to be solved in the present invention is to avoid erosion and the minimizing experiment investment of adverse factor to electronic apparatus components and parts in the equipment.
The technical scheme that the present invention addresses the above problem is as described below:
A kind of charger of concrete durability experiment, this charger are stablized the bending force holding unit by a bending force applying unit and and are formed, wherein,
The bending force applying unit has a base, and two of base is respectively equipped with one or two guide upright posts; One crossbeam is set on the guide upright post, and the lower surface of its vertical centre is provided with a pressure transducer; Two of lateral symmetry face is respectively equipped with an electric pushrod between described base and the crossbeam;
Stablize the bending force holding unit and have a base plate, two of base plate is respectively equipped with one or the vertical rod of two guiding; One lower cross plate and a upper cross plate are set in the guiding vertical rod; A sheathed spiral compression spring respectively in the every vertical rod between lower cross plate and the upper cross plate is positioned in the every vertical rod on upper cross plate top and establishes a nut respectively;
During loading, concrete test block to be tested is placed between described base plate and the lower cross plate, whole stable bending force holding unit places between the base and crossbeam of bending force applying unit, at this moment, the synchronous drop-down crossbeam of described two electric pushrods, pressure transducer just acts on the center of described upper cross plate upper surface.
Charger of the present invention, because the guide effect in loading and the maintenance dead load process is born in guide upright post in the wherein said bending force applying unit and the vertical rod in the stable bending force holding unit respectively, therefore when the specification of concrete test block greatly the time, the reacting force of institute's loading force and test block all departs from the vertical centre of device easily and described crossbeam and lower cross plate and upper cross plate is tilted, and the dirigibility that this moment, crossbeam and lower cross plate and upper cross plate moved up and down is then influenced.In view of above-mentioned technical matters, when the specification of concrete test block was big, two of described base was respectively equipped with two guide upright posts, and is symmetricly set on the both sides of the lateral symmetry face of base; Two of described base plate is respectively equipped with the vertical rod of two guiding, and is symmetricly set on the both sides of the lateral symmetry face of base plate.If the specification of concrete test block is less, two of described base is respectively equipped with a guide upright post, and is arranged in the lateral symmetry face of base; Two of described base plate is respectively equipped with the vertical rod of a guiding, and is arranged in the lateral symmetry face of base plate.
For the ease of the dirigibility that guarantees that crossbeam and lower cross plate and upper cross plate move up and down, charger of the present invention, the upper surface of wherein said base and base plate is respectively equipped with vertical center line.
Charger of the present invention is designed to independently bending force applying unit and stable bending force holding unit, therefore has following beneficial effect than prior art:
1, charger is designed to independently bending force applying unit and stable bending force holding unit, as long as the stable bending force holding unit of how much acquiring respective numbers according to the durability experiment factor, use a cover bending force applying unit can carry out the durability experiment of all factors simultaneously, can save the equipment investment of experiment.
2, bending force applying unit and stable bending force holding unit are separate unit, have only stable bending force holding unit to enter experimental box in the experimentation, can avoid the electrical equipment such as pressure transducer and electric pushrod in the bending force applying unit to contact and damage with harmful medium with concrete test block.
3, adopt electric tool to load, can reduce experimenter's labour intensity.
4, it is relatively low to stablize the height of bending force holding unit, can obviously reduce the volume of experimental box, further saves investment.
Description of drawings
Fig. 1, Fig. 2 and Fig. 3 are the structural representation of a specific embodiment of bending force applying unit of the present invention, and wherein, Fig. 1 is a front view, and Fig. 2 left view (A-A of Fig. 1 analyses and observe), Fig. 3 are that the A of Fig. 1 is to view (amplification).
Fig. 4, Fig. 5 and Fig. 6 are the structural representation of a specific embodiment of stable bending force holding unit of the present invention, and wherein, Fig. 4 is a front view, and Fig. 5 left view (center line along vertical rod is analysed and observe), Fig. 6 are that the B of Fig. 4 is to view (amplification).
Fig. 7 is (side-looking) structural representation of another specific embodiment of bending force applying unit of the present invention.
Fig. 8 is (side-looking) structural representation of another specific embodiment of stable bending force holding unit of the present invention.
Fig. 9 is the user mode figure of the charger of following embodiment 1 described concrete durability experiment.
Embodiment
Example 1
The charger of the concrete durability experiment that this is routine shown in Fig. 1～3 bending force applying unit 1 and Fig. 4～6 shown in stablize bending force holding unit 2 and form.
Referring to Fig. 1, Fig. 2 and Fig. 3, the integral body of bending force applying unit 1 is a tower structure, and it has a base 3, and two of base 3 is respectively equipped with a guide upright post 4, and is arranged in the lateral symmetry face P of base 3; One crossbeam 5 is set on the guide upright post 4, and the lower surface of its vertical centre is provided with a pressure transducer 6; Two of lateral symmetry face P is respectively equipped with the inboard that an electric pushrod 7, two electric pushrods 7 are positioned at two guide upright posts 4 between described base 3 and the crossbeam 5; The upper surface of base 3 is provided with vertical center line 14.
Referring to Fig. 4, Fig. 5 and Fig. 6, to stablize bending force holding unit 2 and have a base plate 8, two of base plate 8 is respectively equipped with the vertical rod 9 of a guiding, and is arranged in the lateral symmetry face Q of base plate 8; One lower cross plate 10 and a upper cross plate 11 are set in the guiding vertical rod 9; A sheathed spiral compression spring 12 respectively in two vertical rods 9 between lower cross plate 10 and the upper cross plate 11 is positioned in two vertical rods on upper cross plate 11 tops and establishes a nut 13 respectively; The upper surface of base plate 8 is provided with vertical center line 15.
Example 2
The charger of the concrete durability experiment that this is routine bending force applying unit 1 and stable bending force holding unit shown in Figure 82 as shown in Figure 7 formed.By Fig. 7 and Fig. 8 as seen, two of the base 3 of the bending force applying unit 1 in this example is respectively equipped with two guide upright posts 4, and is symmetricly set on the both sides of the lateral symmetry face P of base 3; The two of stablizing the base plate 8 of bending force holding unit 2 is respectively equipped with the vertical rod 9 of two guiding, and is symmetricly set on the both sides of the lateral symmetry face Q of base plate 8.Embodiment beyond this example is above-mentioned is identical with example 1.
The method of using the charger of concrete durability experiment of the present invention to load below in conjunction with drawings and Examples 1 brief description.
Referring to Fig. 9 and in conjunction with Fig. 1～6, earlier with Fig. 4, Fig. 5 and stable bending force holding unit 2 shown in Figure 6 are placed on Fig. 1, between the base 3 and crossbeam 5 of Fig. 2 and bending force applying unit 1 shown in Figure 3, and set vertical center line 15 consistencies from top to bottom of upper surface of the set vertical center line of the upper surface that makes base 3 14 and base plate 8, then with vertical center line 15 be benchmark with three block specifications be 40mm * 40mm * 160mm little concrete test block 16 according to a conventional method (as shown in Figure 9) be placed on the center of the upper surface of the base plate 8 of stablizing bending force holding unit 2, again the data line of pressure transducer 6 and the power lead and the control corresponding device of two electric pushrods 7 are connected, and set loading force, start two electric pushrods 7 at last and slowly load.When being loaded on default loading force, automatically cut off the power supply of two electric pushrods 7 by control device, and turn two nuts 13 downwards by the experimenter, make it to be close to upper cross plate 11, then, oppositely start two electric pushrods 7, the upper cross plate 11 that pressure transducer 6 is left stablize bending force holding unit 2, loading work promptly finishes.Whole stable bending force holding unit 2 can be shifted out after the loading work of one group of test block is finished, use another stable bending force holding unit 2 to carry out the loading work of next group test block more as stated above.The related control device of loading procedure is a kind of simple opertaing device, and those of ordinary skill in the art can design by above-described control procedure.
Claims (4)
1. the charger of a concrete durability experiment, this charger are stablized bending force holding unit (2) by a bending force applying unit (1) and and are formed, wherein,
Bending force applying unit (1) has a base (3), and two of base (3) is respectively equipped with one or two guide upright posts (4); One crossbeam (5) is set on the guide upright post (4), and the lower surface of its vertical centre is provided with a pressure transducer (6); The two in longitudinal profile is respectively equipped with an electric pushrod (7) between described base (3) and the crossbeam (5);
Stablize bending force holding unit (2) and have a base plate (8), two of base plate (8) is respectively equipped with one or the vertical rod (9) of two guiding; One lower cross plate (10) and a upper cross plate (11) are set in the guiding vertical rod (9); A sheathed spiral compression spring (12) is respectively gone up in every vertical rod (9) between lower cross plate (10) and the upper cross plate (11), is positioned in the every vertical rod (9) on upper cross plate (11) top to establish a nut (12) respectively;
During loading, concrete test block to be tested is placed between described base plate (8) and the lower cross plate (10), whole stable bending force holding unit (2) places between the base (3) and crossbeam (5) of bending force applying unit (1), at this moment, the synchronous drop-down crossbeams of described two electric pushrods (7) (5), pressure transducer (7) just acts on the center of described upper cross plate (11) upper surface.
2. the charger of a kind of concrete durability experiment according to claim 1 is characterized in that, two of described base (3) is respectively equipped with two guide upright posts (4), and is symmetricly set on the both sides of the lateral symmetry face of base (3); Two of described base plate (8) is respectively equipped with the vertical rod (9) of two guiding, and is symmetricly set on the both sides of the lateral symmetry face of base plate (8).
3. the charger of a kind of concrete durability experiment according to claim 1 is characterized in that, two of described base (3) is respectively equipped with a guide upright post (4), and is arranged in the lateral symmetry face of base (3); Two of described base plate (8) is respectively equipped with the vertical rod (9) of a guiding, and is arranged in the lateral symmetry face of base plate (8).
4. according to the charger of claim 1,2 or 3 described a kind of concrete durability experiments, it is characterized in that the upper surface of described base (3) and base plate (8) is respectively equipped with vertical center line (14,15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010101219A CN101776555A (en) | 2010-01-25 | 2010-01-25 | Loading device for concrete durability test |
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| CN201010101219A CN101776555A (en) | 2010-01-25 | 2010-01-25 | Loading device for concrete durability test |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979990A (en) * | 2010-10-15 | 2011-02-23 | 中国建筑材料科学研究总院 | Self-positioning detachable concrete durability test stress loading device |
| CN102466586A (en) * | 2010-11-12 | 2012-05-23 | 中国建筑材料科学研究总院 | Fatigue loading device for reinforced concrete duration test |
| CN102466596A (en) * | 2010-11-12 | 2012-05-23 | 中国建筑材料科学研究总院 | Constant loading device for testing durability of reinforced concrete |
| CN102778389A (en) * | 2012-06-29 | 2012-11-14 | 哈尔滨工程大学 | Concrete test loading device and test method under load and multifactor coupling |
| CN105092669A (en) * | 2015-06-03 | 2015-11-25 | 浙江工业大学 | Bending load loading device for concrete alkali aggregate reaction specimens |
| CN105277442A (en) * | 2015-11-25 | 2016-01-27 | 福建工程学院 | Testing device and method for applying lasting axial tension loads to plurality of concrete test pieces |
| CN105606464A (en) * | 2016-02-25 | 2016-05-25 | 哈尔滨飞机工业集团有限责任公司 | Test sheet making method for adhesive overlap joint shear test |
| CN106769414A (en) * | 2017-01-04 | 2017-05-31 | 湖北工业大学 | Load and test specimen durability test device under environment coupled action |
| CN108801889A (en) * | 2018-05-29 | 2018-11-13 | 江苏苏博特新材料股份有限公司 | A kind of corrosion evaluating device and method of simulating reinforced concrete component composition stress |
| CN108982084A (en) * | 2018-07-25 | 2018-12-11 | 昆山睿力得软件技术有限公司 | Electric tool simulation loading durability test method |
| CN111829763A (en) * | 2020-04-28 | 2020-10-27 | 同济大学 | Electric spring fatigue testing device of containing type node |
-
2010
- 2010-01-25 CN CN201010101219A patent/CN101776555A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979990A (en) * | 2010-10-15 | 2011-02-23 | 中国建筑材料科学研究总院 | Self-positioning detachable concrete durability test stress loading device |
| CN101979990B (en) * | 2010-10-15 | 2012-09-05 | 中国建筑材料科学研究总院 | Self-positioning detachable concrete durability test stress loading device |
| CN102466586A (en) * | 2010-11-12 | 2012-05-23 | 中国建筑材料科学研究总院 | Fatigue loading device for reinforced concrete duration test |
| CN102466596A (en) * | 2010-11-12 | 2012-05-23 | 中国建筑材料科学研究总院 | Constant loading device for testing durability of reinforced concrete |
| CN102466596B (en) * | 2010-11-12 | 2013-09-25 | 中国建筑材料科学研究总院 | Constant loading device for testing durability of reinforced concrete |
| CN102466586B (en) * | 2010-11-12 | 2014-03-19 | 中国建筑材料科学研究总院 | Fatigue loading device for reinforced concrete duration test |
| CN102778389A (en) * | 2012-06-29 | 2012-11-14 | 哈尔滨工程大学 | Concrete test loading device and test method under load and multifactor coupling |
| CN102778389B (en) * | 2012-06-29 | 2014-07-30 | 哈尔滨工程大学 | Concrete test loading device and test method under load and multifactor coupling |
| CN105092669A (en) * | 2015-06-03 | 2015-11-25 | 浙江工业大学 | Bending load loading device for concrete alkali aggregate reaction specimens |
| CN105277442A (en) * | 2015-11-25 | 2016-01-27 | 福建工程学院 | Testing device and method for applying lasting axial tension loads to plurality of concrete test pieces |
| CN105277442B (en) * | 2015-11-25 | 2018-01-09 | 福建工程学院 | Multiple concrete samples are applied with experimental rig and method that lasting axle draws load |
| CN105606464A (en) * | 2016-02-25 | 2016-05-25 | 哈尔滨飞机工业集团有限责任公司 | Test sheet making method for adhesive overlap joint shear test |
| CN106769414A (en) * | 2017-01-04 | 2017-05-31 | 湖北工业大学 | Load and test specimen durability test device under environment coupled action |
| CN108801889A (en) * | 2018-05-29 | 2018-11-13 | 江苏苏博特新材料股份有限公司 | A kind of corrosion evaluating device and method of simulating reinforced concrete component composition stress |
| CN108801889B (en) * | 2018-05-29 | 2020-11-17 | 江苏苏博特新材料股份有限公司 | Corrosion evaluation device and method for simulating composite stress of reinforced concrete member |
| CN108982084A (en) * | 2018-07-25 | 2018-12-11 | 昆山睿力得软件技术有限公司 | Electric tool simulation loading durability test method |
| CN111829763A (en) * | 2020-04-28 | 2020-10-27 | 同济大学 | Electric spring fatigue testing device of containing type node |
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Open date: 20100714 |