CN202330149U - Test loading device for life-cycle service property of reinforced concrete column - Google Patents
Test loading device for life-cycle service property of reinforced concrete column Download PDFInfo
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- CN202330149U CN202330149U CN 201120453608 CN201120453608U CN202330149U CN 202330149 U CN202330149 U CN 202330149U CN 201120453608 CN201120453608 CN 201120453608 CN 201120453608 U CN201120453608 U CN 201120453608U CN 202330149 U CN202330149 U CN 202330149U
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Abstract
The utility model relates to a test device for a life-cycle service property of a reinforced concrete column, which is particularly suitable for fields of researching a time-varying mechanical property and residual bearing force of the reinforced concrete column under effects of an environment and load coupling, and belongs to a structure durability test field. The test device comprises the reinforced concrete column, a reserved hole arranged on the reinforced concrete column, a tension rib, a fixing piece, an anchoring piece, a loading support, an environment simulating box and a test machine, wherein the tension rib is inserted into the reserved hole of the reinforced concrete column; the fixing piece is fixedly arranged at one end of the tension rib and the anchoring piece is fixedly arranged at the other end of the tension rib; a through hole is arranged in the middle of the loading support and the hole diameter is greater than the diameters of the fixing piece and the anchoring piece; and the fixing piece and the anchoring piece can be inserted into the through hole of the loading support and are movably connected with the loading support up and down.
Description
Technical field
The utility model relates to a kind of test unit of reinforced column life-cycle military service performance, is particularly useful for reinforced column time-varying force performance and the occasion that remains bearing capacity under research environment and the load coupling, belongs to structure durability test field.
Background technology
Xoncrete structure all is work under certain load action, and stands multiple factor couplings such as sclerosis, infiltration, freeze thawing, chemical erosion, and the concrete durability achievement under a large amount of no load actions is the residing virtual condition of reflect structure rationally.Since half a century; Xoncrete structure causes the accident of results in premature failure, the lost of life to be on the increase owing to permanance is not enough, especially Important Project such as dam, road, bridge, harbour and high-rise do not reach design period just the accident of destruction happen occasionally and cause enormous economic loss and casualties.Therefore, system carries out the permanance of xoncrete structure, member under dual or the effect of multiple-disruption factor and a great science and technology and the theoretical difficult problem that the military service performance study is current field of civil engineering.Study the permanance of xoncrete structure, member under complex environment effect and the load coupling, must at first propose a cover and can consider the endurance test system that a plurality of factors act on simultaneously.But, also do not have the such test method and the test unit that can carry out reinforced column life-cycle military service performance at present.The test of reinforced column mechanical property is at present normally carried out on long column testing machine or steel construction reaction frame testing table, and this is a kind of test unit of short-term mechanical property.
Therefore, still there is following deficiency in prior art: the one, do not consider the influence of working load effect, and actual components is a load operation; The 2nd, can not consider the influence of structural elements Service Environment; Because test unit is bulky; Can't put into existing simulated acceleration test equipment; Like residing working environments of simulation practical structures such as freezing-thawing test machine, carbonization case, artificial environment simulation boxes, promptly enable to put into existing acceleration environment simulated test facility, the anticorrosion and performance degradation of charger itself also is an insoluble technical matters; The 3rd, prior art can't record the residue bearing capacity of member under user mode, and the member mostly prior art is to make up in groups is through the reaction frame load application, and the residue bearing capacity that record member must shed to hold and carry a device and carry out slow test then.And prior art all is the experimental techniques about beam, like the disclosed technology of patent CN 201681017U.This shedding holds that to carry the slow test gained result who carries out behind the device different fully with actual conditions; As: when earthquake or wind or other load that can cause the structural elements lotus to be destroyed take place; We can not all lay down the working load that acts on the structural elements, and we can not guarantee fully that all personnel can both withdraw equally when just taking place as earthquake from buildings.The destruction of structural elements is structural elements working load and the coefficient result of accidental load often.For this reason, people pay close attention to more be structural elements under working load and environment acting in conjunction, promptly under the normal operating conditions along with the degeneration decay rule of the passing member of active time with and how much resist the ability of accidental load destruction with ining addition.
The utility model content
The purpose of the utility model is to solve in the present test unit can not consider the working load effect; Bulkyly can not consider Service Environment influence; Can't under situation about not unloading, record the residue bearing capacity of member; Can't test environment and the shortcoming of load coupling lower prop life-cycle military service performance, a kind of simple in structure, easy to operate, advantages of small volume is provided, does not account for test space and can consider the reinforced column life-cycle military service performance of environment and load coupling simultaneously and the test unit that the residue bearing capacity changes.
The utility model solves the technical scheme that its technical matters adopted:
The utility model is a kind of reinforced column life-cycle military service performance test charger; Comprise reinforced column, be opened in preformed hole, pulling force muscle, fixture, anchoring piece, loading bearing, environmental chamber and testing machine on the reinforced column; The pulling force muscle is interspersed in the preformed hole of reinforced column; Fixture is fixed in an end of pulling force muscle, and anchoring piece is fixed in the other end of pulling force muscle, and the centre that loads bearing offers through hole; The aperture is greater than the diameter of fixture and anchoring piece, fixture with in anchoring piece can be interspersed in the through hole that loads bearing and with load that bearing is up and down relatively to be connected.
As a kind of improvement, the preformed hole on the described reinforced column of the utility model is offered along the length direction of post.
As a kind of improvement, the edge of a wing of outstanding post is left at the two ends of the described reinforced column of the utility model, and the edge of a wing is wide with post, and the root height is not less than the height of post.
As a kind of improvement, the described preformed hole of the utility model is opened on the edge of a wing along the column length direction.
As a kind of improvement, the described preformed hole of the utility model is opened on the cylinder along the column length direction.
As a kind of improvement, the described pulling force muscle of the utility model is stainless steel steel strand wires or the antiseptic high-durability steel wire of process or steel strand wires or stainless steel precision bundle screw-thread steel or the antiseptic smart screw-thread steel of pricking of process, and permanance does not reduce under environmental activity.
As a kind of improvement, the described fixture of the utility model, anchoring piece are stainless steel or process preservative treatment, and permanance does not reduce under environmental activity.
As a kind of improvement; The centre of the described loading bearing of the utility model offers through hole; The aperture is greater than the diameter of fixture and anchoring piece, and loading bearing does not have constraint to fixture and anchoring piece, and fixture and anchoring piece can vertically move freely in the hole that loads bearing when secondary loaded.
The cross section, the edge of a wing of the utility model can be square, also can be trapezoidal.When concrete the use, earlier the pulling force muscle is penetrated the preformed hole of post, by the fixing end of pulling force muscle of fixture; Anchoring piece is the other end of pulling force muscle fixedly, and the anchored end of stretch-draw pulling force muscle reaches design load, fixed anchors; The post of load application is put into environmental chamber; After waiting to reach design age, take out post and will load two ends loading place of bearing alignment post and be placed in that coupled columns applies ultimate load on the testing machine reaction frame, can obtain the residue bearing capacity of post.
The beneficial effect of the utility model mainly shows:
1, not corrosion of charger, intensity are high, can satisfy arbitrary dimension post, the loading needs of loading ratio arbitrarily;
2, the test unit volume is little; Take up space hardly; Can make full use of simulation member real work states such as existing durability test device such as freezing-thawing test machine, carbonization case, artificial environment simulation box, research environment and load coupling are to the mechanical property of reinforced column;
3, need not unload test; Can directly carry out Mechanics Performance Testings such as continuous stress-strain, load-amount of deflection, residue bearing capacity to the concrete column (promptly not laying down under the situation of working load) of holding the state of carrying; And the charger of lasting load loads secondary does not have effect of contraction; Can truly reflect load and environment coupled action to the influence of reinforced column life-cycle military service performance with the residue bearing capacity, fully the warranty test result discloses the overall process failure mechanism and the Damage and Failure process of reflection post under actual working state of post.
Description of drawings
Fig. 1 is the structural representation of reinforced column life-cycle military service performance test charger;
Fig. 2 applies the structural representation of ultimate load state for reinforced column life-cycle military service performance test charger;
Fig. 3 is a reinforced column A structural representation;
Fig. 4 is a reinforced column B structural representation;
Fig. 5 is a reinforced column C-structure synoptic diagram;
Fig. 6 is put in the structural representation of load and environment coupled action in the environmental chamber for the post of load application;
Fig. 7 is a loading bearing diagrammatic cross-section with holes;
Fig. 8 is a loading bearing schematic top plan view with holes.
Among the figure, 1 is reinforced column, and 2 is preformed hole, and 3 is the pulling force muscle, and 4 is fixture, and 5 is anchoring piece, and 6 for loading bearing, and 7 is environmental chamber, and 8 is testing machine, and 9 is cylinder, and 10 is the edge of a wing.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the structural representation of reinforced column 1 life-cycle military service performance test charger; A kind of reinforced column 1 life-cycle military service performance test charger; Comprise reinforced column 1, be opened in preformed hole 2, pulling force muscle 3, fixture 4, anchoring piece 5, loading bearing 6 with holes and testing machine 8 on the reinforced column 1; Pulling force muscle 3 is interspersed in the preformed hole 2 of reinforced column 1; Fixture 4 is fixed in an end of pulling force muscle 3, and anchoring piece 5 is fixed in the other end of pulling force muscle 3, and the centre that loads bearing offers through hole; The aperture is greater than the diameter of fixture and anchoring piece; Fixture 4 and anchoring piece 5 can be interspersed in the through hole that loads bearing 6 and with load that bearing 6 is up and down relatively to be connected, loading 6 pairs of fixtures of bearing 4 does not have constraint with anchoring piece 5, fixture 4 can vertically move freely in the through hole that loads bearing 6 with anchoring piece 5 when secondary loaded.
In concrete use; Earlier pulling force muscle 3 is penetrated the preformed hole 2 of post, by the fixing end of pulling force muscle 3 of fixture 4, anchoring piece 5 is the other end of pulling force muscle 3 fixedly; The anchored end of stretch-draw pulling force muscle 3 reaches design load; Fixed anchors 5 is put into environmental chamber 7 with the post of load application, and the post that Fig. 6 is load application is put in the structural representation of load and environment coupled action in the environmental chamber 7; After waiting to reach design age, take out post and will load bearing 6 alignment post two ends loadings place and be placed in that coupled columns applies ultimate load on the testing machine 8, the testing machine 8 here can be a reaction frame also, like Fig. 2.Fig. 7 is loading bearing 6 diagrammatic cross-sections with holes, and Fig. 8 is loading bearing 6 schematic top plan view with holes, and the structure that loads bearing 6 is shown in Fig. 7 and 8.
The structure of reinforced column 1 has multiple, the structure of following three classics of at present giving an example:
Fig. 3 is a reinforced column 1A structural representation; Preformed hole 2 is offered along the length direction of reinforced column 1.
Fig. 4 is a reinforced column 1B structural representation; Reinforced column 1 comprises the cylinder 10 and the edge of a wing 9, and the cross section on the edge of a wing 9 is square, and preformed hole 2 is opened on the cylinder 10 along the length direction of reinforced column 1.
Fig. 5 is a reinforced column 1C structural representation; Reinforced column 1 comprises the cylinder 10 and the edge of a wing 9, and the cross section on the edge of a wing 9 is trapezoidal, and preformed hole 2 is opened on the edge of a wing 9 along the length direction of reinforced column 1.
Come the technical scheme of the utility model is elaborated through a concrete embodiment below:
(1) as shown in Figure 1, at first require to make reinforced column 1 according to testing program, the sectional dimension of post is 120 * 120mm; High 750mm, the main muscle of post are 4 φ 10, and stirrup is φ 650-100; Protective seam 15mm; The length of the edge of a wing 9 outstanding posts is 120mm, reserves eccentric throw 100mm, the symmetrical preformed hole 2 of diameter 32mm at 9 positions, the edge of a wing, post two ends.With the reinforced column after the moulding 1 form removal and standard curing room maintenance 28 days two days later.
(2) be 64kN according to the ultimate bearing capacity that calculates post, coupled columns applies 50% ultimate load, i.e. 32000kN.Be the preformed hole 2 that the stainless fining twisted steel pulling force muscle 3 of 25mm penetrates the post edge of a wing 9 at first with diameter; Then stainless steel threaded fasteners 4 is screwed in an end of screw-thread steel pulling force muscle 3,, use the punching lifting jack again from anchored end stretch-draw screw-thread steel pulling force muscle 3 with the other end of stainless steel threaded anchoring piece 5 screw-in screw-thread steels; Consider because post its rigidity under environment and load coupling is degenerated and cause stress relaxation; Carry out 5% ultra stretch-draw through calculating coupled columns, the actual 35.2kN load that applies is when stretching force reaches back 35.2kN; Held lotus 3 minutes, fixed anchors 5 then.
(3) after the lasting load of member applies and finishes, member is put into artificial environment simulation box 7, the actual working state of model configuration, as shown in Figure 6.
(4) wait to reach design age after, from artificial environment simulation box 7, take out post, loading bearing 6 with holes is penetrated fixture 4 and anchoring piece 5; Then successively with force transducer; Lifting jack is arranged on the steel construction reaction frame testing table 8, at last to the test specimen load application, until structural failure.The residue bearing capacity that records post is 16kN, reduces by 25% than the bearing capacity of not considering environment and load coupling post.
At last; It is also to be noted that what more than enumerate only is a specific embodiment of the utility model, obviously; The utility model is not limited to above embodiment; Many distortion can also be arranged, and all distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought the protection domain of the utility model.
Claims (7)
1. reinforced column life-cycle military service performance test charger; It is characterized in that; Comprise reinforced column (1), be opened in preformed hole (2), pulling force muscle (3), fixture (4), the anchoring piece (5) on the reinforced column (1) and load bearing (6); Described pulling force muscle (3) is interspersed in the preformed hole (2) of reinforced column (1); Fixture (4) is fixed in an end of pulling force muscle (3), and anchoring piece (5) is fixed in the other end of pulling force muscle (3), and the centre of described loading bearing (6) offers through hole; The aperture is greater than the diameter of fixture (4) and anchoring piece (5), described fixture (4) with in anchoring piece (5) can be interspersed in the through hole that loads bearing (6) and with load up and down relatively connection of bearing (6).
2. charger according to claim 1 is characterized in that, the preformed hole (2) on the described reinforced column (1) is offered along the length direction of post.
3. charger according to claim 1 is characterized in that, the edge of a wing (9) of outstanding post is left at the two ends of described reinforced column (1), and the edge of a wing (9) are wide with post, and the root height is not less than the height of post.
4. charger according to claim 3 is characterized in that, described preformed hole (2) is opened on the edge of a wing (9) along the column length direction.
5. charger according to claim 3 is characterized in that, described preformed hole (2) is opened on the cylinder (10) along the column length direction.
6. according to claim 2 or 4 or 5 described chargers, it is characterized in that described pulling force muscle (3) is stainless steel steel strand wires or the antiseptic high-durability steel wire of process or steel strand wires or stainless steel precision bundle screw-thread steel or the antiseptic smart screw-thread steel of pricking of process.
7. charger according to claim 6 is characterized in that, described fixture (4), anchoring piece (5) are stainless steel or process preservative treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120453608 CN202330149U (en) | 2011-11-16 | 2011-11-16 | Test loading device for life-cycle service property of reinforced concrete column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120453608 CN202330149U (en) | 2011-11-16 | 2011-11-16 | Test loading device for life-cycle service property of reinforced concrete column |
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| Publication Number | Publication Date |
|---|---|
| CN202330149U true CN202330149U (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120453608 Expired - Fee Related CN202330149U (en) | 2011-11-16 | 2011-11-16 | Test loading device for life-cycle service property of reinforced concrete column |
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| CN (1) | CN202330149U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374950A (en) * | 2011-11-16 | 2012-03-14 | 浙江建设职业技术学院 | Test device for service performance of reinforced column under load and environment coupled action |
| CN105259043A (en) * | 2015-10-20 | 2016-01-20 | 武汉大学 | Self-balancing loading device for batch concrete-filled steel tubes |
-
2011
- 2011-11-16 CN CN 201120453608 patent/CN202330149U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374950A (en) * | 2011-11-16 | 2012-03-14 | 浙江建设职业技术学院 | Test device for service performance of reinforced column under load and environment coupled action |
| CN102374950B (en) * | 2011-11-16 | 2014-08-13 | 浙江建设职业技术学院 | Test device for service performance of reinforced column under load and environment coupled action |
| CN105259043A (en) * | 2015-10-20 | 2016-01-20 | 武汉大学 | Self-balancing loading device for batch concrete-filled steel tubes |
| CN105259043B (en) * | 2015-10-20 | 2017-08-25 | 武汉大学 | Batch concrete filled steel tube self-balanced loading device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20151116 |
|
| EXPY | Termination of patent right or utility model |