CN103776767A - Portable drawing-type testing device and drawing-type testing method for testing adhesive property steel bar and concrete - Google Patents

Portable drawing-type testing device and drawing-type testing method for testing adhesive property steel bar and concrete Download PDF

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Publication number
CN103776767A
CN103776767A CN201410034863.0A CN201410034863A CN103776767A CN 103776767 A CN103776767 A CN 103776767A CN 201410034863 A CN201410034863 A CN 201410034863A CN 103776767 A CN103776767 A CN 103776767A
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CN
China
Prior art keywords
displacement meter
reinforcing bar
hydraulic jack
magnetic gauge
frame
Prior art date
Application number
CN201410034863.0A
Other languages
Chinese (zh)
Inventor
沈德建
陈莹
金秋蓉
成大宝
申嘉鑫
王南江
王伟
杜军
都鹏
苏海峰
齐云尚
Original Assignee
河海大学
淮河水利委员会治淮工程建设管理局
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 河海大学, 淮河水利委员会治淮工程建设管理局 filed Critical 河海大学
Priority to CN201410034863.0A priority Critical patent/CN103776767A/en
Publication of CN103776767A publication Critical patent/CN103776767A/en

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Abstract

The invention discloses a portable drawing-type testing device and a drawing-type testing method for testing adhesive property of a steel bar and concrete. The bottom of a hydraulic jack is mounted on an upper crossbeam of a dismountable outer frame; the top of the hydraulic jack is connected with one end of a load sensor; the middle part of a steel bar is positioned inside a concrete sample; the upper part and the lower part of the steel bar are positioned outside the concrete sample; a deformeter is connected with two displacement meters and the load sensor; the other end of the load sensor is connected with a top plate; a groove is formed in a base plate; the concrete sample is placed on the base plate; the lower part of the steel bar passes through the groove; a lower chuck is mounted on a floor beam and used for clamping the lower part of the steel bar; two magnetic gauge stands are respectively mounted on side plates; the two displacement meters are respectively mounted on the two magnetic gauge stands; one displacement meter is connected with the upper surface of the concrete sample, and the other displacement meter is connected with the top of the steel bar. The device disclosed by the invention has few components and is light in weight, simple, reliable and quite convenient to carry.

Description

Drawing type proving installation and the method for a kind of Portable reinforcing steel bar and concrete adhesive property
Technical field
The proving installation and the method that the present invention relates to a kind of reinforcing bar and concrete adhesive property, belong to concrete construction field.
Background technology
In field of civil engineering, the adhesive property between reinforcing bar and concrete is the stressed prerequisite of reinforced concrete structure or component load-bearing.In existing engineering, occur much producing slippage due to reinforcing bar and concrete Bond Degradation, finally caused Important Project accident.The adhesion problem of reinforced concrete structure is significant in engineering practice.The degeneration of bonding is to cause that component strength reduces, the main cause that Stiffness Deterioration and distortion increase.
The patent documentation of CN203216831U discloses the forced proving installation of a kind of Portable reinforcing steel bar and concrete adhesive property, this proving installation uses steel plate that concrete sample is fixed on two bearings by steel plate, again two bearings are fixed on the bottom girder of framework, required accessory is large and heavy, is inconvenient to carry.Because proving installation need to use on the different building site of being everlasting, it is very important being therefore convenient for carrying for proving installation.
Summary of the invention
Technical matters to be solved by this invention is the drawing type proving installation that a kind of Portable reinforcing steel bar and concrete adhesive property will be provided, and the using method of this device is provided.
In order to solve the problems of the technologies described above, the present invention by the following technical solutions.A drawing type proving installation for Portable reinforcing steel bar and concrete adhesive property, comprises dismountable outside framework, hydraulic jack, load transducer, strainmeter, two displacement meters, concrete sample, reinforcing bar, oil pump, flowline, scavenge pipe, computer, lower chuck, two Magnetic gauge stands, inner frame, the bottom of hydraulic jack is arranged on the entablature of outside framework, and the top of hydraulic jack is connected with one end of load transducer, and hydraulic jack is passed through flowline, scavenge pipe is connected with oil pump, and reinforcing bar middle part is positioned at concrete sample, and reinforcing bar top and reinforcing bar bottom are positioned at the outside of concrete sample, strainmeter and two displacement meters, load transducer is connected, computer is connected with strainmeter, the other end of load transducer is connected with the top board of inner frame, on the base plate of inner frame, have groove, concrete sample is placed on the base plate of inner frame, reinforcing bar bottom is passed from groove, lower chuck is arranged on the bottom girder of outside framework, lower chuck clamping reinforcing bar bottom, two Magnetic gauge stands are arranged on respectively on the side plate of inner frame, two displacement meters are arranged on respectively on two Magnetic gauge stands, and a displacement meter is connected with the upper surface of concrete sample, and another displacement meter is connected with the top of reinforcing bar.
Preferably: on the bottom of entablature, have chute, the bottom of hydraulic jack is arranged in chute.
Preferably: also comprise coupling bolt, the center of top board has threaded hole, and coupling bolt is arranged in threaded hole, coupling bolt is connected with the other end of load transducer.
The method that the drawing type proving installation of Portable reinforcing steel bar and concrete adhesive property uses, its step is as follows:
The first step: make pattern plate bolster, in pattern plate bolster two ends central punch, make on Kong Yi bar horizontal line;
Second step: reinforcing bar through the hole on pattern plate bolster two ends and make two ends of reinforcing bar stretch out pattern plate bolster, is built to test specimen and by standard curing;
The 3rd step: the bottom of hydraulic jack is arranged on the entablature of outside framework, the top of hydraulic jack is connected with one end of load transducer, the other end of load transducer is connected with the top board of inner frame, concrete sample is placed on the base plate of inner frame, reinforcing bar bottom is passed from groove, lower chuck is arranged on the bottom girder of outside framework, lower chuck clamping reinforcing bar bottom;
The 4th step: hydraulic jack is connected with oil pump by flowline, scavenge pipe;
The 5th step: two Magnetic gauge stands are arranged on respectively on the side plate of inner frame, two displacement meters are arranged on respectively on two Magnetic gauge stands, and a displacement meter is connected with the upper surface of concrete sample, and another displacement meter is connected with the top of reinforcing bar;
The 6th step: strainmeter is connected with two displacement meters, load transducers, and computer is connected with strainmeter.
Beneficial effect: this apparatus parts is few, lightweight, simple and reliable, is easy to carry very much.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of drawing type proving installation.
Fig. 2 is chute schematic diagram.
Fig. 3 is base plate schematic diagram.
Reference numeral title is as follows: 1, entablature; 2, bottom girder; 3, curb girder; 4, hydraulic jack; 5, upper grip; 6, lower chuck; 7, load transducer; 8, coupling bolt; 9, strainmeter; 10, displacement meter; 11, displacement meter; 12, Magnetic gauge stand; 13, Magnetic gauge stand; 14, inner frame; 15, side plate; 16, top board; 17, base plate; 18, concrete sample; 19, reinforcing bar top; 20, reinforcing bar bottom; 21, oil pump; 22, flowline; 23, scavenge pipe; 24, computer; 25, groove; 26, chute.
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.
As shown in Figure 1, 2, 3, the present invention is the drawing type proving installation of a kind of Portable reinforcing steel bar and concrete adhesive property.
Outside framework by a crossbeam 1, bottom girder 2, two curb girders 3 totally four block plates assemble by bolt, surface of steel plate adopts galvanizing processing, anticorrosion; The bottom of hydraulic jack 4 is arranged on entablature 1, on the bottom of entablature 1, have chute 26, the bottom of hydraulic jack 4 is arranged in chute 26, hydraulic jack 4 can be slided along chute 26, also can two degrees of freedom worktable be installed in the bottom of entablature 1, hydraulic jack 4 is arranged on worktable, thereby hydraulic jack 4 can be moved arbitrarily on entablature 1; The top of hydraulic jack 4 is connected with upper grip 5, and hydraulic jack 4 is to be inverted to be arranged on entablature 1; Hydraulic jack 4 is connected with oil pump 21 by flowline 22, scavenge pipe 23.One end of the bottom clamping load transducer 7 of upper grip 5, also can make the top of hydraulic jack 4 directly be connected with one end of load transducer 7, and the other end of load transducer 7 is connected with coupling bolt 8.Load transducer 7 is carried in the size of the power on inner frame in order to measure hydraulic jack 4.
Inner frame by a top board 16, base plate 17, totally four block plates are by being welded for two side plates 15, surface of steel plate adopts galvanizing processing, anticorrosion; Top board 16 center has threaded hole, and coupling bolt 8 is arranged in threaded hole, also can make the other end of load transducer 7 directly be connected with top board 16; On base plate 17, have opening groove 25 or backwards forward.Reinforcing bar middle part is positioned at concrete sample 18, and reinforcing bar top 19 and reinforcing bar bottom 20 are positioned at the outside of concrete sample 18, and concrete sample 18 is placed on base plate 17, and reinforcing bar bottom 20 is passed from groove 25.Lower chuck 6 is arranged on bottom girder 2, and lower chuck 6 clamps reinforcing bar bottom 20.The present invention provides the upper grip 5 of different-diameter, lower chuck 6 to clamp the reinforcing bar of different-diameter as required, to measure different concrete samples.Groove 25 arrange can be easily from front side or rear side concrete sample 18 that two end bars are exposed be placed on base plate 17.
The floor installation of Magnetic gauge stand 12, Magnetic gauge stand 13 is on the side plate 15 of inner frame 14, and displacement meter 11 is arranged on Magnetic gauge stand 13, and displacement meter 10 is arranged on displacement meter Magnetic gauge stand 12; Displacement meter 10 is connected with the upper surface of concrete sample 18, in order to measure the displacement of upper surface of concrete sample 18; Displacement meter 11 is connected with the top of reinforcing bar, in order to measure the displacement at reinforcing bar top, namely determines the displacement of reinforcing bar.
Strainmeter 9 is connected with displacement meter 10, displacement meter 11, load transducer 7 by wire, for gathering the data of displacement meter 10, displacement meter 11, load transducer 7; Computer 24 is connected with strainmeter 9 by wire.Start proving installation, drafting is exerted oneself--displacement curve.
Outside framework in this programme can be decomposed into four block plates, there is no massive accessory, and therefore this apparatus parts is few, lightweight, is easy to carry very much.Concrete sample is arranged in inner frame, lower chuck clamping reinforcing bar bottom, and in the time of drawing, concrete sample can not move, and therefore this device is simple, reliable.Adopt Magnetic gauge stand that displacement meter is installed, facilitate installation and removal, reduced the parts of device.Be connected hydraulic jack 4, load transducer 7, inner frame by upper grip 5 with coupling bolt 8, facilitated the installation and removal of device.
A method of testing for the drawing type proving installation of Portable reinforcing steel bar and concrete adhesive property, its step is as follows:
The first step: make pattern plate bolster, in pattern plate bolster two ends central punch, make on Kong Yi bar horizontal line;
Second step: reinforcing bar through the hole on pattern plate bolster two ends and make two ends of reinforcing bar stretch out pattern plate bolster, is built to test specimen and by standard curing;
The 3rd step: the bottom of hydraulic jack 4 is arranged on the entablature 1 of outside framework, the top of hydraulic jack 4 is connected with one end of load transducer 7, the other end of load transducer 7 is connected with the top board 16 of inner frame 14, concrete sample 18 is placed on the base plate 17 of inner frame 14, reinforcing bar bottom 20 is passed from groove 25, lower chuck 6 is arranged on the bottom girder 2 of outside framework, and lower chuck 6 clamps reinforcing bar bottom 20;
The 4th step: hydraulic jack 4 is connected with oil pump 21 by flowline 22, scavenge pipe 23;
The 5th step: Magnetic gauge stand 12, Magnetic gauge stand 13 are arranged on the side plate 15 of inner frame 14, displacement meter 11 is arranged on Magnetic gauge stand 13, displacement meter 10 is arranged on Magnetic gauge stand 12, and displacement meter 10 is connected with the upper surface of concrete sample 18, and displacement meter 11 is connected with the top of reinforcing bar;
The 6th step: strainmeter 9 is connected with displacement meter 10, displacement meter 11, load transducer 7, and computer 24 is connected with strainmeter 9.

Claims (4)

1. the drawing type proving installation of a Portable reinforcing steel bar and concrete adhesive property, comprise dismountable outside framework, hydraulic jack (4), load transducer (7), strainmeter (9), displacement meter (10), concrete sample (18), reinforcing bar, oil pump (21), flowline (22), scavenge pipe (23), computer (24), reinforcing bar middle part is positioned at concrete sample (18), reinforcing bar top (19) and reinforcing bar bottom (20) are positioned at the outside of concrete sample (18), the bottom of hydraulic jack (4) is arranged on the entablature (1) of outside framework, the top of hydraulic jack (4) is connected with one end of load transducer (7), hydraulic jack (4) is by flowline (22), scavenge pipe (23) is connected with oil pump (21), strainmeter (9) and displacement meter (10), load transducer (7) is connected, computer (24) is connected with strainmeter (9), it is characterized in that: also comprise lower chuck (6), displacement meter (11), Magnetic gauge stand (12), Magnetic gauge stand (13), inner frame (14), displacement meter (11) is connected with strainmeter (9), the other end of load transducer (7) is connected with the top board (16) of inner frame (14), on the base plate (17) of inner frame (14), have groove (25), concrete sample (18) is placed on the base plate (17) of inner frame (14), reinforcing bar bottom (20) is passed from groove (25), lower chuck (6) is arranged on the bottom girder (2) of outside framework, lower chuck (6) clamping reinforcing bar bottom (20), Magnetic gauge stand (12), Magnetic gauge stand (13) is arranged on the side plate (15) of inner frame (14), displacement meter (11) is arranged on Magnetic gauge stand (13), displacement meter (10) is arranged on Magnetic gauge stand (12), displacement meter (10) is connected with the upper surface of concrete sample (18), displacement meter (11) is connected with the top of reinforcing bar.
2. drawing type proving installation according to claim 1, is characterized in that: on the bottom of entablature (1), have chute (26), the bottom of hydraulic jack (4) is arranged in chute (26).
3. drawing type proving installation according to claim 1, it is characterized in that: also comprise coupling bolt (8), the center of top board (16) has threaded hole, and coupling bolt (8) is arranged in threaded hole, and coupling bolt (8) is connected with the other end of load transducer (7).
4. the method that proving installation according to claim 1 uses, is characterized in that:
The first step: make pattern plate bolster, in pattern plate bolster two ends central punch, make on Kong Yi bar horizontal line;
Second step: reinforcing bar through the hole on pattern plate bolster two ends and two ends of reinforcing bar are stretched out outside pattern plate bolster, is built to test specimen and by standard curing;
The 3rd step: the bottom of hydraulic jack (4) is arranged on the entablature (1) of outside framework, the top of hydraulic jack (4) is connected with one end of load transducer (7), the other end of load transducer (7) is connected with the top board (16) of inner frame (14), concrete sample (18) is placed on the base plate (17) of inner frame (14), reinforcing bar bottom (20) is passed from groove (25), lower chuck (6) is arranged on the bottom girder (2) of outside framework, lower chuck (6) clamping reinforcing bar bottom (20);
The 4th step: hydraulic jack (4) is connected with oil pump (21) by flowline (22), scavenge pipe (23);
The 5th step: Magnetic gauge stand (12), Magnetic gauge stand (13) are arranged on the side plate (15) of inner frame (14), displacement meter (11) is arranged on Magnetic gauge stand (13), displacement meter (10) is arranged on Magnetic gauge stand (12), displacement meter (10) is connected with the upper surface of concrete sample (18), and displacement meter (11) is connected with reinforcing bar top (19);
The 6th step: strainmeter (9) is connected with displacement meter (10), displacement meter (11), load transducer (7), and computer (24) is connected with strainmeter (9).
CN201410034863.0A 2014-01-24 2014-01-24 Portable drawing-type testing device and drawing-type testing method for testing adhesive property steel bar and concrete CN103776767A (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103940737A (en) * 2014-05-12 2014-07-23 金陵科技学院 Drop-weight testing machine-based dynamic binding slip test device and method
CN104122201A (en) * 2014-07-01 2014-10-29 三峡大学 Device for measuring bond stress and slippage of reinforced concrete
CN105181580A (en) * 2015-08-26 2015-12-23 河海大学 Device for testing steel bar bond stress in concrete filled steel tube and testing method thereof
CN105259107A (en) * 2015-10-21 2016-01-20 江苏城市职业学院 Device for testing bond performance of reinforcing steel bar and concrete through drawing and testing method
CN105313044A (en) * 2015-11-05 2016-02-10 芜湖赛特施工设备有限公司 Clamping device used for getting reinforcing steel bars from cement brick wall through hammering
CN106483068A (en) * 2016-12-20 2017-03-08 河海大学 A kind of reciprocal method of testing for loading lower basalt fibre muscle and concrete dynamic adhesion performance

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002267594A (en) * 2001-03-09 2002-09-18 Nisshin Steel Co Ltd Measuring device and measuring method for degree of annealing adhesion of stack annealing steel plate
CN102507439A (en) * 2011-11-23 2012-06-20 河海大学 Testing device and method for directly testing adhesive property between early-age concrete and reinforcing steel bars
CN102519871A (en) * 2011-11-25 2012-06-27 北京交通大学 Method and device for measuring bonding strength between reinforcing steel and concrete under action of pre-stress
CN102539319A (en) * 2011-12-27 2012-07-04 河海大学 Device and method for directly testing bonding performance of concrete and reinforcing steel bar under action of reciprocating load
CN203216831U (en) * 2013-03-21 2013-09-25 河海大学 On-site retrieved member steel bar and concrete bonding property press-in testing device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002267594A (en) * 2001-03-09 2002-09-18 Nisshin Steel Co Ltd Measuring device and measuring method for degree of annealing adhesion of stack annealing steel plate
CN102507439A (en) * 2011-11-23 2012-06-20 河海大学 Testing device and method for directly testing adhesive property between early-age concrete and reinforcing steel bars
CN102519871A (en) * 2011-11-25 2012-06-27 北京交通大学 Method and device for measuring bonding strength between reinforcing steel and concrete under action of pre-stress
CN102539319A (en) * 2011-12-27 2012-07-04 河海大学 Device and method for directly testing bonding performance of concrete and reinforcing steel bar under action of reciprocating load
CN203216831U (en) * 2013-03-21 2013-09-25 河海大学 On-site retrieved member steel bar and concrete bonding property press-in testing device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103940737A (en) * 2014-05-12 2014-07-23 金陵科技学院 Drop-weight testing machine-based dynamic binding slip test device and method
CN104122201A (en) * 2014-07-01 2014-10-29 三峡大学 Device for measuring bond stress and slippage of reinforced concrete
CN105181580A (en) * 2015-08-26 2015-12-23 河海大学 Device for testing steel bar bond stress in concrete filled steel tube and testing method thereof
CN105259107A (en) * 2015-10-21 2016-01-20 江苏城市职业学院 Device for testing bond performance of reinforcing steel bar and concrete through drawing and testing method
CN105313044A (en) * 2015-11-05 2016-02-10 芜湖赛特施工设备有限公司 Clamping device used for getting reinforcing steel bars from cement brick wall through hammering
CN106483068A (en) * 2016-12-20 2017-03-08 河海大学 A kind of reciprocal method of testing for loading lower basalt fibre muscle and concrete dynamic adhesion performance

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Application publication date: 20140507

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