CN105352819B - Armored concrete test specimen adds curved experimental rig and test method under salt mist environment - Google Patents

Armored concrete test specimen adds curved experimental rig and test method under salt mist environment Download PDF

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Publication number
CN105352819B
CN105352819B CN201510790959.4A CN201510790959A CN105352819B CN 105352819 B CN105352819 B CN 105352819B CN 201510790959 A CN201510790959 A CN 201510790959A CN 105352819 B CN105352819 B CN 105352819B
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China
Prior art keywords
test specimen
armored concrete
concrete test
salt mist
mist environment
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Expired - Fee Related
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CN201510790959.4A
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Chinese (zh)
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CN105352819A (en
Inventor
程旭东
乔垚明
田雪凯
盛余飞
庞明伟
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China University of Petroleum UPC East China
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China University of Petroleum UPC East China
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Abstract

The invention belongs to Experiment of Material Science field, and in particular, to armored concrete test specimen adds curved experimental rig under a kind of salt mist environment.Experimental rig, including:Cushion cap, salt mist environment case, jack, pressure sensor;Wherein:Cushion cap both ends are respectively arranged with bearing reaction frame, stand under load reaction frame, and salt mist environment case is provided with the middle part of cushion cap;Fix jack on bearing reaction frame, fixation pressure sensor on stand under load reaction frame;Armored concrete test specimen is positioned in salt mist environment case, and salt mist environment case provides the salt mist environment needed for experiment for armored concrete test specimen, and jack pair armored concrete test specimen applies bending load, the payload values that pressure sensor measurement armored concrete is born.The present invention can apply the armored concrete test specimen under salt mist environment bending load, and loading range ability is big, freely adjustable payload values size in experimentation, apply few with salt fog leakage during sustained loading, test data is accurate, can read data, service life length at any time.

Description

Armored concrete test specimen adds curved experimental rig and test method under salt mist environment
Technical field
The invention belongs to Experiment of Material Science field, and in particular, to armored concrete test specimen adds under a kind of salt mist environment Curved experimental rig and test method.
Background technology
Coastal building uses reinforced concrete structure more, and there are chlorion, chlorion in marine atmosphere to cause reinforcing bar to become rusty Erosion, and then cause the destruction of reinforced concrete structure.It is general in the lab to use for the durable Journal of Sex Research of armored concrete Artificial climate environmental experiment method simulates true environment, and researcher thinks can to the method for armored concrete test specimen cycle spray salt fog Preferable simulated marine atmosphere environment chlorine salt corrosion caused by armored concrete, but the big academician in Wuzhong points out, true nature Armored concrete durability damage under environment is often the common results of multiple factors, and the durable Journal of Sex Research of concrete is considered as Relative multiple factors.In serviceability limit stage, reinforced concrete member always undergos pair of load and chloride erosion Recast is used, in order to effectively assess the endurance quality of reinforced concrete member under the service state of coastal area, it is necessary to carry out villaumite Corrode and the endurancing under the multiple coupled effect of bending load.
When laboratory carries out the multiple coupled experiment of villaumite and bending load at present, it is more using under salt mist environment to reinforced concrete Native test specimen applies counterweight mode, but the load level that the method is applied is limited, for the higher component of some bearing capacitys, It is difficult to reach its normal load level in the stage of military service using the method.The patent of invention of application publication number CN103674708A A kind of lower concrete durability research experiment loading device of various factors coupling effect is disclosed, which cannot freely control Bending load size, and spray salt fog needs closed environment, and loading experiment is carried out in salt mist experiment case using the loading device, Data cannot be read at any time.The patent of invention of application publication number CN103743626A discloses a kind of reinforced beam that is used for and freezes Melt durability test device and test method, although the experimental rig can freely control bending load, be only applicable to freeze Melt circulation and Seawater corrosion coupling experiment, salt fog there is strong corrosion to make the metal in the charging assembly in the device With the multiple coupled experiment of salt fog and load cannot be carried out using the experimental provision.
The content of the invention
To solve above technical problem and overcoming existing equipment insufficient, the present invention provides reinforced concrete under a kind of salt mist environment Native test specimen adds curved experimental rig, can freely control bending load size and read data at any time.
To achieve the above object, the present invention uses following technical proposals:
Armored concrete test specimen adds curved experimental rig under salt mist environment, including:Cushion cap, salt mist environment case, jack, pressure Sensor;Wherein:Cushion cap both ends are respectively arranged with bearing reaction frame, stand under load reaction frame, and salt mist environment case is provided with the middle part of cushion cap; Fix jack on bearing reaction frame, fixation pressure sensor on stand under load reaction frame;Armored concrete test specimen is positioned over salt fog ring In the case of border, salt mist environment case provides the salt mist environment needed for experiment, the examination of jack pair armored concrete for armored concrete test specimen Part applies bending load, the payload values that pressure sensor measurement armored concrete is born.
Compared with prior art, beneficial effects of the present invention are as follows:Armored concrete test specimen under salt mist environment can be applied Add bending load, loading range ability is big, freely adjustable payload values size in experimentation, during application and sustained loading Salt fog leakage is few, and test data is accurate, can read data, service life length at any time.
Brief description of the drawings
Fig. 1 is experimental rig structure of the main view;
Fig. 2 is experimental rig structure schematic side view;
Fig. 3 is to add curved driving head schematic perspective view;
In figure:1st, cushion cap, 2, salt mist environment case, 3, jack, 4, pressure sensor, 5, bearing reaction frame, 6, stand under load it is anti- Power frame, 7, armored concrete test specimen, 8, main box, 9, loading sliding tube, 10, loading sliding shoe, 11, loading sliding tube support Frame, 12, stand under load sliding tube, 13, stand under load sliding shoe, 14, stand under load sliding tube supporting rack, 15 plus curved driving head, 16, long slab, 17, Short slab, 18, circular arc camber, 19, slide, 20, beam supporting rod, 21, roller, 22, nozzle, 23, power spraye, 24, brine tank.
Embodiment
As shown in Figure 1 and Figure 2, armored concrete test specimen adds curved experimental rig under salt mist environment, including:Cushion cap 1, salt fog ring Border case 2, jack 3, pressure sensor 4;Wherein:1 both ends of cushion cap are respectively arranged with bearing reaction frame 5, stand under load reaction frame 6, hold The middle part of platform 1 is provided with salt mist environment case 2;Fix jack 3 on bearing reaction frame 5, fixation pressure sensor on stand under load reaction frame 6 4;Armored concrete test specimen 7 is positioned in salt mist environment case 2, and salt mist environment case 2 is used to provide experiment for armored concrete test specimen 7 Required salt mist environment, jack 3 apply armored concrete test specimen 7 bending load, and pressure sensor 4 measures armored concrete 7 payload values born.
Salt mist environment case 2, including:Main box 8, main box 8 are square box;Case of the main box 8 towards 3 side of jack Loading sliding tube 9 is fixed with wall, loading sliding shoe 10, loading 10 one end of sliding shoe and jack 3 are set in loading sliding tube 9 It is connected, one end is in contact with the armored concrete test specimen 7 in main box 8;Loading sliding tube supporting rack 11 is set on cushion cap 1, is added Sliding tube 9 is carried to be supported by loading sliding tube supporting rack 11.
Main box 8 is towards being fixed with stand under load sliding tube 12 on the tank wall for answering 4 side of pressure sensor, in stand under load sliding tube 12 There is stand under load sliding shoe 13,13 one end of stand under load sliding shoe is connected with pressure sensor 4, the armored concrete in one end and main box 8 Test specimen 7 is in contact;Stand under load sliding tube supporting rack 14 is set on cushion cap 1, and stand under load sliding tube 12 is by stand under load sliding tube supporting rack 14 Support.
As shown in figure 3, one end that loading sliding shoe 10, stand under load sliding shoe 13 are in contact with armored concrete test specimen 7 is solid It is fixed to be equipped with plus curved driving head 15, add curved driving head 15 to be a block length plate 16,16 upper and lower ends of long slab are fixed with identical short of size Plate 17, the end face that short slab 17 is in contact with armored concrete test specimen 7 are circular arc camber 18.
As shown in Fig. 2, main box 8 is internally provided with slide 19, slide 19 is fixed on the both sides that main box 8 is not connected with sliding tube On tank wall, two slides 19 are equipped with every side box wall, the slide of both sides is symmetrical arranged, and two slides 19 per side are upper and lower right Neat distribution;Beam supporting rod 20 is provided at both ends with roller 21, and roller 21 is positioned on slide 19, can be slided on slide 19;Beam Supporting rod 20 is cylindrical elongate bar, when carrying out armored concrete test specimen by curved experiment, for being carried for armored concrete test specimen For bearing reaction.
Nozzle 22 is respectively arranged on the main box both sides box wall of not connected sliding tube, and nozzle 22 passes through conduit and main box Outer power spraye 23 is connected, and power spraye 23 connects brine tank 24 by conduit;The loading sliding shoe 10, stand under load Sliding shoe 13 plus curved driving head 15, beam supporting rod 20 use pressure-resistant corrosion-resistant plastics, and main box 8, slide 19 are using heat-resisting resistance to Corrode plastics, used material such as PVC, PP plastics.
Armored concrete test specimen is as follows by curved test method under salt mist environment:
Salt mist environment case 2 is opened, two pieces of armored concrete test specimens 7 are individually positioned in 20 both sides of beam supporting rod, reinforcing bar mixes Solidifying soil test specimen 7 alignment loading sliding shoe 10, stand under load sliding shoe 13, in loading sliding shoe 10, stand under load sliding shoe 13 and reinforced concrete One end that native test specimen 7 is in contact is fixed plus curved driving head 15;Then control jack 3 to be further applied load loading sliding shoe 10, add Carrying sliding shoe 10 and deliver load to armored concrete test specimen 7, armored concrete test specimen 7 delivers load to beam supporting rod 20, Beam supporting rod 20 delivers load to another piece of armored concrete test specimen 7, and another piece of armored concrete test specimen 7 delivers load to Stand under load sliding shoe 13, stand under load sliding shoe 13 deliver load to pressure sensor 4 again, and pressure sensor 4 measures and reads load Value;After the data shown by pressure sensor 4 reach required payload values, jack 3 stops continuing to load, and maintains the lotus Load value;Jack 3 closes salt mist environment case 2, proceeds by spraying, power spraye to 7 loaded of armored concrete test specimen 23 extract the brine in brine tank 24, are sprayed by nozzle 22 to armored concrete test specimen 7;After a period of time, stop spray Mist, loosens jack 3, takes out armored concrete test specimen 7, completes test operation.

Claims (5)

1. armored concrete test specimen adds curved experimental rig under a kind of salt mist environment, including:Cushion cap, salt mist environment case, jack, pressure Force snesor;Cushion cap both ends are respectively arranged with bearing reaction frame, stand under load reaction frame, and salt mist environment case is provided with the middle part of cushion cap;Branch Hold and jack is fixed on reaction frame, fixation pressure sensor on stand under load reaction frame;Armored concrete test specimen is positioned over salt mist environment In case, salt mist environment case provides the salt mist environment needed for experiment, jack pair armored concrete test specimen for armored concrete test specimen Apply bending load, the payload values that pressure sensor measurement armored concrete is born;It is characterized in that:
Salt mist environment case, including:Main box, main box are square box;Main box is towards fixed on the tank wall of jack side There is a loading sliding tube, loading sliding shoe is set in loading sliding tube, loading sliding shoe one end is connected with jack, one end and main tank Internal armored concrete test specimen is in contact;Loading sliding tube supporting rack is set on cushion cap, and loading sliding tube is by loading sliding tube Supporting rack supports;
Main box is internally provided with slide, and slide is fixed on main box and is not connected with the both sides box wall of sliding tube, on every side box wall Equipped with two slides, the slide of both sides is symmetrical arranged, two upper and lower aligned fashions of slide per side;The both ends of beam supporting rod are set Roller is equipped with, roller is positioned on slide, can be slided on slide;Beam supporting rod is cylindrical elongate bar, is mixed carrying out reinforcing bar When solidifying soil test specimen is by curved experiment, for providing bearing reaction for armored concrete test specimen;
Nozzle is respectively arranged on the main box both sides box wall of not connected sliding tube, nozzle by conduit with it is electronic outside main box Sprayer is connected, and power spraye connects brine tank by conduit.
2. armored concrete test specimen adds curved experimental rig under salt mist environment according to claim 1, it is characterised in that:Main tank Dignity has stand under load sliding shoe, stand under load to stand under load sliding tube is fixed with the tank wall for answering pressure sensor side in stand under load sliding tube Sliding shoe one end is connected with pressure sensor, one end is in contact with the armored concrete test specimen in main box;On cushion cap set by Sliding tube supporting rack is carried, stand under load sliding tube is supported by stand under load sliding tube supporting rack.
3. armored concrete test specimen adds curved experimental rig under salt mist environment according to claim 2, it is characterised in that:Loading One end that sliding shoe, stand under load sliding shoe are in contact with armored concrete test specimen is fixed with plus curved driving head, adds curved driving head For a block length plate, long slab upper and lower ends are fixed with the identical short slab of size, the end face that short slab is in contact with armored concrete test specimen For circular arc camber.
4. armored concrete test specimen adds curved experimental rig under salt mist environment according to claim 3, it is characterised in that:It is described Loading sliding shoe, stand under load sliding shoe plus curved driving head, beam supporting rod use pressure-resistant corrosion-resistant plastics, main box, slide use Heat-and corrosion-resistant plastics.
5. armored concrete test specimen is by curved test method under a kind of salt mist environment, using under the salt mist environment described in claim 4 Armored concrete test specimen adds curved experimental rig, it is characterised in that method is as follows:Salt mist environment case is opened, by two pieces of reinforced concretes Native test specimen is individually positioned in beam supporting rod both sides, and armored concrete test specimen alignment loading sliding shoe, stand under load sliding shoe, are slided in loading One end that motion block, stand under load sliding shoe are in contact with armored concrete test specimen is fixed plus curved driving head;Then control jack pair adds Carry sliding shoe to be further applied load, loading sliding shoe delivers load to armored concrete test specimen, and armored concrete test specimen passes load Beam supporting rod is passed, beam supporting rod delivers load to another piece of armored concrete test specimen, and another piece of armored concrete test specimen will Load passes to stand under load sliding shoe, and stand under load sliding shoe delivers load to pressure sensor again, and pressure sensor is measured and read Payload values;After the data shown by pressure sensor reach required payload values, jack stops continuing to load, and maintaining should Payload values;Jack pair armored concrete test specimen loaded, closes salt mist environment case, proceeds by spraying, power spraye The brine in brine tank is extracted, is sprayed by nozzle to armored concrete test specimen;After a period of time, stop spraying, loosen Jack, takes out armored concrete test specimen, completes test operation.
CN201510790959.4A 2015-11-17 2015-11-17 Armored concrete test specimen adds curved experimental rig and test method under salt mist environment Expired - Fee Related CN105352819B (en)

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CN111006998A (en) * 2019-12-24 2020-04-14 青岛理工大学 Concrete loading device for simulating stress state of any point of tunnel

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CN106568701B (en) * 2016-10-08 2019-07-12 浙江大学 A kind of online salt spray test device of disconnecting link
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

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CN111006998A (en) * 2019-12-24 2020-04-14 青岛理工大学 Concrete loading device for simulating stress state of any point of tunnel

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