CN103018151A - Concrete test sample bidirectional stress loading device - Google Patents
Concrete test sample bidirectional stress loading device Download PDFInfo
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- CN103018151A CN103018151A CN2012105320882A CN201210532088A CN103018151A CN 103018151 A CN103018151 A CN 103018151A CN 2012105320882 A CN2012105320882 A CN 2012105320882A CN 201210532088 A CN201210532088 A CN 201210532088A CN 103018151 A CN103018151 A CN 103018151A
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Abstract
The invention discloses a concrete test sample bidirectional stress loading device. A stainless steel stress application frame, a stress ring, a ball hinge, a steel gasket, a resistance strain gauge and concrete test samples are sequentially placed from outside to inside; the top surface and the side surface of the stress application frame have bolt holes, and high-intensity bolts butt against the ball hinge through the bolt holes; the steel gasket is lined under the ball hinge, and is connected with the concrete test sample and the stress ring; the concrete test sample is loaded vertically through the high-intensity bolts, and the vertical loading force value is reflected accurately through the stress variation of the resistance strain gauge pasted and configured on the stress ring; and then by rotating the high-intensity bolts on the side surface of the stress application frame, the concrete test samples are sequentially loaded horizontally through the ball hinge, and the horizontal loading force value is reflected accurately through the stress variation of the resistance strain gauge pasted and configured on the stress ring. The concrete test sample bidirectional stress loading device provided by the invention performs synchronous bidirectional loading on concrete cubic test samples longitudinally and horizontally according to random proportion by rotating the high-intensity bolts, is simple in structure, and is convenient to use.
Description
Technical field
The invention belongs to civil engineering work concrete sample loading technique field, relate to the design of concrete sample being carried out the biaxial stress augmentor.
Background technology
At present cause the quantity of building destruction increasing because of the concrete structure durability problem all over the world, its economic loss that causes is very huge, at present China's built house also has and has closely over halfly entered the aging stage, and the endurance issues that buildings faces is very outstanding too.Studies show that concrete endurance quality and its perviousness are closely related.Because concrete corrosion failure is all occuring under aqueous water or the harmful liquid environment or under the gas intrusion prerequisite, at present both at home and abroad all with the important indicator of concrete perviousness as evaluation concrete durability quality.This shows that the method for scientific and reasonable quantitative evaluation concrete permeability is the basis of research concrete permeability, also is to instruct the important means that improves concrete durability.
The method that is used at present the mensuration concrete permeability mainly adopts the methods such as electrical parameter method and chloride diffusion coefficient method, estimates whereby the quality of the permanance of concrete material.But these methods all adopt concrete sample under static condition (unstressed effect); carry out the mensuration of electrical quantity or chloride diffusion coefficient, and come the endurance quality of qualitative or quantitative this concrete material of assessment or calculate corresponding thickness of concrete cover with this.Will cause like this concrete condition generation deviation of this assessment result with reality, because when concrete material uses in practical structures, bear the load actions of different nature such as unidirectional and two-way, its perviousness changes lower fully different from static condition (unstressed effect).Therefore must carry out unidirectional and bilateral loading to concrete sample, change to analyze the quality that defines its endurance quality according to concrete perviousness after the different loading ratios.Concrete sample biaxial stress charger of the present invention is the high and a kind of instrument simple to operate of a kind of precision, can be convenient, fast, quantitatively all kinds of concrete samples are carried out biaxial stress and load, for the permeability test of bidirectional stress concrete sample provides a kind of reliable charger.
Summary of the invention
The objective of the invention is provides a kind of reliable charger for the permeability test of bidirectional stress concrete sample.
Technical scheme of the present invention is:
A kind of concrete sample is carried out the biaxial stress charger, comprise high-strength bolt, afterburning frame, ball pivot, stress loop, steel plate washer, concrete sample, bolt hole and resistance strain gage; The afterburning frame of stainless steel, stress loop, ball pivot, steel plate washer, resistance strain gage and concrete sample from outer to inner, are placed successively; End face and the side of the afterburning frame of stainless steel are provided with some bolts hole, and high-strength bolt withstands ball pivot by bolt hole; Ball pivot underlay steel pad, steel pad and concrete sample and stress loop are joined.
Screw in the bolt hole by high-strength bolt, screw rod withstands ball pivot, at ball pivot underlay steel pad, concrete sample is vertically loaded, and the strain variation accurate response of the resistance strain gage by patch on the stress loop goes out vertical loading stress value.By rotation afterburning frame side high-strength bolt, successively concrete sample is carried out horizontal direction by ball pivot and load again, the strain variation accurate response of the resistance strain gage by patch on the stress loop of correspondence goes out the loading stress value of horizontal direction.
Effect of the present invention is can accurately carry out vertical direction to concrete sample to apply different big or small stress with horizontal direction with benefit, and the duration that can keep arbitrarily bidirectional load, the performance tests such as perviousness that can be correlated with to the concrete sample after the effect of different proportion bidirectional load.Can be under the effect of different proportion biaxial stress and the various durations condition under, the infiltrative research of concrete sample provides effective charger, test applicable to the research of concrete structure engineering durability of permeability needs, and can produce huge economic benefit and social benefit.
Description of drawings
Accompanying drawing 1 is concrete sample two-way reinforcing device front-view schematic diagram.
Accompanying drawing 2 is that synoptic diagram is looked on a concrete sample two-way reinforcing device left side.
Accompanying drawing 3 is concrete sample two-way reinforcing device stress loop synoptic diagram.
Accompanying drawing 4 is concrete sample two-way reinforcing device schematic top plan view.
Among the figure: 1 high-strength bolt, 2 afterburning frames, 3 ball pivots, 4 stress loop, 5 steel plate washers, 6 concrete samples, 7 bolts hole, 8 resistance strain gages.
Embodiment
Below in conjunction with technical scheme and accompanying drawing, be described in detail the specific embodiment of the present invention.
The concrete sample biaxial stress augmentor that the present invention proposes such as Fig. 1～shown in Figure 4.Apparatus main body is comprised of the thick stainless steel of 25mm afterburning frame 2, afterburning arch and left side Ф 15mm bolt hole 7, Ф 15mm high-strength bolt 1, ball pivot 3, steel plate washer 5 and the stress loop 4 of posting resistance strain gage, high-strength bolt 1 screws in the bolt hole 7 of Ф 15mm on the afterburning frame 2, by ball pivot 3, steel plate washer 5 stress is applied on the concrete sample 6, stress intensity obtains reaction by the strain variation of the resistance strain gage 8 of patch on the stress loop 4.
Claims (1)
1. concrete sample biaxial stress charger, it is characterized in that this concrete sample biaxial stress charger comprises high-strength bolt (1), afterburning frame (2), ball pivot (3), stress loop (4), steel plate washer (5), bolt hole (7), resistance strain gage (8); The afterburning frame (2) of stainless steel, stress loop (4), ball pivot (3), steel plate washer (5), resistance strain gage (8) and concrete sample (6) from outer to inner, are placed successively; End face and the side of the afterburning frame of stainless steel (2) are provided with some bolts hole (7), and high-strength bolt (1) withstands ball pivot (3) by bolt hole (7); Ball pivot (3) underlay steel pad (5), steel pad (5) joins with concrete sample (6) and stress loop (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105320882A CN103018151A (en) | 2012-12-12 | 2012-12-12 | Concrete test sample bidirectional stress loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105320882A CN103018151A (en) | 2012-12-12 | 2012-12-12 | Concrete test sample bidirectional stress loading device |
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| Publication Number | Publication Date |
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| CN103018151A true CN103018151A (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012105320882A Pending CN103018151A (en) | 2012-12-12 | 2012-12-12 | Concrete test sample bidirectional stress loading device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486623A (en) * | 2016-01-18 | 2016-04-13 | 北京工业大学 | Two-dimensional rock sample seepage testing device |
| CN105547863A (en) * | 2016-01-18 | 2016-05-04 | 北京工业大学 | Bidirectional sample conveying component and two-dimensional rock sample seepage test device applying same |
| CN105606461A (en) * | 2015-12-30 | 2016-05-25 | 北京工业大学 | Liftable loading mechanism and shear-seepage coupling testing device applying same |
| CN107515097A (en) * | 2017-09-04 | 2017-12-26 | 中国海洋大学 | Anchoring system horizontal rigidity tests multidirectional hierarchical loading device |
| CN108776101A (en) * | 2018-06-11 | 2018-11-09 | 河海大学 | A kind of concrete contact dissolution experimental rig for considering to split tensile stress |
| CN112507556A (en) * | 2020-12-11 | 2021-03-16 | 中国石油大学(华东) | Method for evaluating damage of building wall in blasting accident |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699267A (en) * | 2009-10-21 | 2010-04-28 | 河海大学 | Loading device for testing concrete chloride ion permeability by coulometry and testing method thereof |
| CN101718671A (en) * | 2009-11-12 | 2010-06-02 | 河海大学 | Loading device for testing permeability of concrete chloride ions and test method |
-
2012
- 2012-12-12 CN CN2012105320882A patent/CN103018151A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699267A (en) * | 2009-10-21 | 2010-04-28 | 河海大学 | Loading device for testing concrete chloride ion permeability by coulometry and testing method thereof |
| CN101718671A (en) * | 2009-11-12 | 2010-06-02 | 河海大学 | Loading device for testing permeability of concrete chloride ions and test method |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606461A (en) * | 2015-12-30 | 2016-05-25 | 北京工业大学 | Liftable loading mechanism and shear-seepage coupling testing device applying same |
| CN105606461B (en) * | 2015-12-30 | 2019-08-30 | 北京工业大学 | Liftable loading mechanism and the shear-seepage coupling test device for applying it |
| CN105486623A (en) * | 2016-01-18 | 2016-04-13 | 北京工业大学 | Two-dimensional rock sample seepage testing device |
| CN105547863A (en) * | 2016-01-18 | 2016-05-04 | 北京工业大学 | Bidirectional sample conveying component and two-dimensional rock sample seepage test device applying same |
| CN105547863B (en) * | 2016-01-18 | 2019-04-16 | 北京工业大学 | Multidirectional sample presentation component and the two-dimentional rock sample seepage flow test device for applying it |
| CN107515097A (en) * | 2017-09-04 | 2017-12-26 | 中国海洋大学 | Anchoring system horizontal rigidity tests multidirectional hierarchical loading device |
| CN107515097B (en) * | 2017-09-04 | 2022-12-27 | 中国海洋大学 | Multidirectional grading loading device for mooring system horizontal rigidity test |
| CN108776101A (en) * | 2018-06-11 | 2018-11-09 | 河海大学 | A kind of concrete contact dissolution experimental rig for considering to split tensile stress |
| CN112507556A (en) * | 2020-12-11 | 2021-03-16 | 中国石油大学(华东) | Method for evaluating damage of building wall in blasting accident |
| CN112507556B (en) * | 2020-12-11 | 2022-04-08 | 中国石油大学(华东) | Method for evaluating damage of building wall in blasting accident |
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Application publication date: 20130403 |