CN102401765B - Lateral restraining device for load test of steel-structure compression member - Google Patents
Lateral restraining device for load test of steel-structure compression member Download PDFInfo
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- CN102401765B CN102401765B CN 201110378921 CN201110378921A CN102401765B CN 102401765 B CN102401765 B CN 102401765B CN 201110378921 CN201110378921 CN 201110378921 CN 201110378921 A CN201110378921 A CN 201110378921A CN 102401765 B CN102401765 B CN 102401765B
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- 238000012360 testing method Methods 0.000 title claims abstract description 51
- 230000006835 compression Effects 0.000 title claims abstract description 21
- 238000007906 compression Methods 0.000 title claims abstract description 21
- 230000000452 restraining effect Effects 0.000 title claims abstract description 17
- 239000003351 stiffener Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 15
- 239000010959 steel Substances 0.000 abstract description 15
- 238000011160 research Methods 0.000 abstract description 5
- 238000011056 performance test Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 3
- 238000010667 large scale reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of the steel structure of a structural engineering, in particular to a lateral restraining device for a load test of a steel-structure compression member. The inner-side flange of a front support transverse beam and the inner-side flange of a back support transverse beam are opposite to each other and are in parallel with each other, the inner-side flange of a left self-balancing transverse beam and the inner-side flange of a right self-balancing transverse beam are opposite to each other and are respectively in bolt connection with left ends and right ends of the two support transverse beams, so that a rectangular self-balancing counter-force frame is formed, two test piece clamping plates are opposite to each other face to face between the support transverse beams, are in parallel with each other, and are respectively fixed in the middle of the inner-side flanges of the two support transverse beams by four clamp plate screw rods and matched screw nuts, a distance between the two test pieces clamp plates is adjusted by adjusting the matched screw nuts, a plurality of lead screw clamp bases are fixedly arranged on the outer-side flanges of the support transverse beams, a plurality of lead screw clamps are fixedly connected with the lead screw clamp bases, the lead screw clamps are clamped on a plurality of lead screws of a long-column pressure tester, the self-balancing counter-force frame is horizontally arranged among the lead screws, and the side faces of a test piece are clamped by the two test pieces clamp plates. The effective lateral support outside an unstable plane of the test piece to be pressured is realized, so that the device is suitable for the research of a performance test for the whole stability of the compression member.
Description
Technical field
The invention belongs to Structural Engineering steel construction technical field, particularly a kind of lateral restraining device for load test of steel-structure compression member.
Background technology
The overall stability of steel construction compression member is one of most important research topic of field of steel structure, usually adopts long column pressure testing machine research experiment.In the situation that there is no lateral support, the pressurized steel column is direction of principal axis unstability a little less than the cross section usually.In order to study steel column around the overall stability of strong axle, necessary lateral support condition must be provided, the unstability around strong axle occurs in it around the computational length guarantee of weak axle to reduce steel column.Yet the long column pressure testing machine does not provide the device of lateral support, often need to be at the large-scale reaction of bearing frame of its arranged around in test, but reaction frame is installed difficulty, supported amount is limited and need larger place, and large-scale reaction frame even can't be arranged in condition limited laboratory.How designing the lateral support device that lateral support can effectively be provided, have again simultaneously the characteristics such as easy for installation, that size is adjustable, assembling is simple, build is less, is problem demanding prompt solution in scientific research and engineering practice.
Summary of the invention
lateral support device problem when the object of the invention is to solve the described long column pressure testing machine of background technology and carrying out steel construction compression member load test, a kind of lateral restraining device for load test of steel-structure compression member is provided, it is characterized in that, lateral restraining device for load test of steel-structure compression member is demountable structure, by leading screw card 1, supporting traverse 2, self-equilibrating crossbeam 3, leading screw card pedestal 4, specimen splint 5 and clamping plate screw rod 6 consist of, supporting traverse 2 and self-equilibrating crossbeam 3 are H type i-beam structure, there are 4 holes at middle part, the inboard edge of a wing of supporting traverse 2, before and after 2 supporting traverse 2 inboard edges of a wing relatively and parallel to each other, the self-balancing reaction frame that the self-equilibrating crossbeam 3 inboard edge of a wing, 2 of left and right relatively and respectively connects and composes rectangle with left end and the right-hand member bolt of 2 supporting traverses 2 in front and back, 4 clamping plate screw rods 6 vertically are fixed in the Si Jiaochu at specimen splint 5 back sides, 2 specimen splints 5 vis-a-vis between 2 supporting traverses 2 is parallel to each other and 4 holes by middle part, the inboard edge of a wing of supporting traverse 2 are fixed on middle part, 2 inboard edges of a wing of supporting traverse 2 with 2 matching nuts of 4 clamping plate screw rods 6 and each clamping plate screw rod 6 respectively, adjust the spacing of 2 specimen splints 5 by regulating matching nut, be placed in the position between 4 leading screws 9 of long column pressure testing machine by self-balancing reaction frame horizontal positioned and left-right symmetric, on each supporting traverse 2, 2 leading screw card pedestals 4 are fixed on supporting traverse 2 outer side wing edges at the correspondence position of 2 leading screws 9 respectively, leading screw card 1 is affixed by Fixing clamp-seat 103 and leading screw card pedestal 4,
In described supporting traverse 2, the affixed transverse stiffener 7 in web both sides, supporting traverse 2 two ends arrange the end socket cover plate and are used for being connected with the self-equilibrating crossbeam bolt connection;
In described self-equilibrating crossbeam 3, the affixed transverse stiffener 7 in web both sides;
Described leading screw card 1 is comprised of active card 101, fixed card 102 and Fixing clamp-seat 103, active card 101 is respectively the semicircular ring identical with leading screw 9 diameters of long column pressure testing machine with fixed card 102, the arc surface of fixed card 102 outsides and Fixing clamp-seat 103 is affixed, weld ribbed stiffener on the two sides of Fixing clamp-seat 103, active card 101 is connected with fixed card and is that bolt connects;
The front of described specimen splint 5 arranges one deck polyfluortetraethylene plate, to reduce the friction force of 8 of specimen splint 5 and test specimens.
Beneficial effect of the present invention is:
(1) version is simple, is easy to processing, and is with low cost;
(2) the specimen splint size is adjustable, is applicable to the pressurized steel column of different cross section size;
(3) level altitude on the leading screw of long column pressure testing machine is adjustable, is applicable to the pressurized steel column of differing heights, and can use simultaneously many cover lateral restraining device for load test of steel-structure compression members;
(4) the device self-equilibrating, can bear larger side direction horizontal load, can effectively avoid it to reach the testing machine leading screw simultaneously;
(5) polyfluortetraethylene plate of back up pad face can reduce the friction force between device and member.
Description of drawings
Fig. 1 is the structure schematic top plan view of lateral restraining device for load test of steel-structure compression member embodiment;
Fig. 2 is that Fig. 1 is along the structure cut-open view of A-A direction;
Fig. 3 is that Fig. 1 is along the structure cut-open view of B-B direction;
Fig. 4 is leading screw card structure schematic diagram.
In figure, 1--leading screw card, 101--active card, 102--fixed card, 103--Fixing clamp-seat, the 2--supporting traverse, 7--transverse stiffener, 3--self-equilibrating crossbeam, 4--leading screw card pedestal, 5--specimen splint, 6--clamping plate screw rod, 7--transverse stiffener, 8--test specimen, 9--leading screw.
Embodiment
The present invention is further illustrated below in conjunction with embodiment and accompanying drawing.
Fig. 1 is the structure schematic top plan view of lateral restraining device for load test of steel-structure compression member embodiment, and Fig. 2 and Fig. 3 are respectively Fig. 1 along the structure cut-open view of A-A direction with along the structure cut-open view of B-B direction.Lateral restraining device for load test of steel-structure compression member is demountable structure, and by leading screw card 1, supporting traverse 2, self-equilibrating crossbeam 3, leading screw card pedestal 4, specimen splint 5 and clamping plate screw rod 6 consist of.Supporting traverse 2 and self-equilibrating crossbeam 3 are H type i-beam structure.There are 4 holes at middle part, the inboard edge of a wing of supporting traverse 2.Before and after 2 supporting traverse 2 inboard edges of a wing relatively and parallel to each other, the self-balancing reaction frame that the inboard edge of a wing of self- equilibrating crossbeam 3,2 of left and right relatively and respectively connects and composes rectangle with left end and the right-hand member bolt of 2 supporting traverses 2 in front and back.4 clamping plate screw rods 6 vertically are fixed in the Si Jiaochu at specimen splint 5 back sides, 2 specimen splints 5 vis-a-vis between 2 supporting traverses 2 is parallel to each other and 4 holes by middle part, the inboard edge of a wing of supporting traverse 2 are fixed on middle part, 2 inboard edges of a wing of supporting traverse 2 with 2 matching nuts of 4 clamping plate screw rods 6 and each clamping plate screw rod 6 respectively, adjust the spacing of 2 specimen splints 5 by regulating matching nut, the front of specimen splint 5 arranges one deck polyfluortetraethylene plate, to reduce the friction force of 8 of specimen splint 5 and test specimens.Be placed in the position between 4 leading screws 9 of long column pressure testing machine by self-balancing reaction frame horizontal positioned and left-right symmetric, on each supporting traverse 2,2 leading screw card pedestals 4 are fixed on supporting traverse 2 outer side wing edges at the correspondence position of 2 leading screws 9 respectively, and leading screw card 1 is affixed by Fixing clamp-seat 103 and leading screw card pedestal 4.
In order to improve the intensity of supporting traverse 2 and self-equilibrating crossbeam 3, the affixed transverse stiffener 7 in web both sides of supporting traverse 2 and self-equilibrating crossbeam 3.Supporting traverse 2 two ends have the end socket cover plate to be used for being connected with the self-equilibrating crossbeam bolt connection.
As shown in Figure 4, leading screw card 1 is comprised of active card 101, fixed card 102 and Fixing clamp-seat 103, active card 101 is respectively the semicircular ring identical with leading screw 9 diameters of long column pressure testing machine with fixed card 102, the arc surface of fixed card 102 outsides and Fixing clamp-seat 103 is affixed, weld ribbed stiffener on the two sides of Fixing clamp-seat 103, active card 101 is connected with fixed card and is that bolt connects.
The use step that lateral restraining device for load test of steel-structure compression member is used for the overall stability experimental study of pressurized steel column test specimen is:
Thereby at first leading screw card 1 is stuck in by the test design height of test specimen 8 on four rhizoid thick sticks 9 of long column pressure testing machine, supporting traverse 2 is fixed on the leading screw 9 of long column pressure testing machine, supporting traverse 2 is born the side direction horizontal load of steel column;
Then 2 self-equilibrating crossbeams 3 and 2 supporting traverses 2 are in aggregates by bolts assemblies, jointly form self-balancing reaction frame, the counter-force that act as balanced support crossbeam 2 of self-equilibrating crossbeam 3 is avoided the leading screw 9 of Load Transfer to the long column pressure testing machine;
At last specimen splint 5 is assembled to middle part, the inboard edge of a wing of supporting traverse 2 by four clamping plate screw rods 6 and matching nut, and regulates specimen splint 5 positions until hold out against with test specimen 8 sides by nut.
The spacing of the level altitude of whole device and 2 specimen splints 5 is adjustable, is applicable to the steel column test specimen pressurized tests of differing heights and sectional dimension.
The present invention is directed to existing long column pressure testing machine the problem of lateral support can't be provided the pressurized steel column, a kind of novel lateral support device has been proposed, on the basis that does not need large-scale reaction of bearing frame, realized the out-of-plane effective lateral support of pressurized steel column test specimen unstability, and size is adjustable flexibly, have very strong practicality and economy, can satisfy the needs of Test And Research Work, be applicable to the overall stability experimental study of compression member.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement are within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (5)
1. lateral restraining device for load test of steel-structure compression member, it is characterized in that, lateral restraining device for load test of steel-structure compression member is demountable structure, by leading screw card (1), supporting traverse (2), self-equilibrating crossbeam (3), leading screw card pedestal (4), specimen splint (5) and clamping plate screw rod (6) consist of, supporting traverse (2) and self-equilibrating crossbeam (3) are H type i-beam structure, there are 4 holes at middle part, the inboard edge of a wing of supporting traverse (2), the inboard edge of a wing of 2 supporting traverses (2), front and back is relatively also parallel to each other, the self-balancing reaction frame that 2 self-equilibrating crossbeams (3) inboard edge of a wing, left and right relatively and respectively connects and composes rectangle with left end and the right-hand member bolt of 2 supporting traverses in front and back (2), 4 clamping plate screw rods (6) vertically are fixed in the Si Jiaochu at specimen splint (5) back side, parallel to each other and 2 matching nuts using respectively 4 clamping plate screw rods (6) and each clamping plate screw rod (6) of 2 specimen splints (5) vis-a-vis between 2 supporting traverses (2) are fixed on middle part, the inboard edge of a wing of 2 supporting traverses (2) by 4 holes at middle part, the inboard edge of a wing of supporting traverse (2), adjust the spacing of 2 specimen splints (5) by regulating matching nut, self-balancing reaction frame horizontal positioned and left-right symmetric are placed in the position between 4 leading screws (9) of long column pressure testing machine, on each supporting traverse (2), 2 leading screw card pedestals (4) are fixed on supporting traverse (2) outer side wing edge at the correspondence position of 2 leading screws (9) respectively, leading screw card (1) is affixed by Fixing clamp-seat (103) and leading screw card pedestal (4).
2. a kind of lateral restraining device for load test of steel-structure compression member according to claim 1, it is characterized in that, in described supporting traverse (2), the affixed transverse stiffeners in web both sides (7), supporting traverse (2) two ends arrange the end socket cover plate and are used for being connected 3 with the self-equilibrating crossbeam) the bolt connection.
3. a kind of lateral restraining device for load test of steel-structure compression member according to claim 1, is characterized in that, in described self-equilibrating crossbeam (3), and the affixed transverse stiffeners in web both sides (7).
4. a kind of lateral restraining device for load test of steel-structure compression member according to claim 1, it is characterized in that, described leading screw card (1) is comprised of active card (101), fixed card (102) and Fixing clamp-seat (103), active card (101) is respectively the semicircular ring identical with leading screw (9) diameter of long column pressure testing machine with fixed card (102), the arc surface of fixed card (102) outside and Fixing clamp-seat (103) is affixed, weld ribbed stiffener on the two sides of Fixing clamp-seat (103), active card (101) is connected 102 with fixed card) be that bolt connects.
5. a kind of lateral restraining device for load test of steel-structure compression member according to claim 1, is characterized in that, the front of described specimen splint (5) arranges one deck polyfluortetraethylene plate, to reduce the friction force between specimen splint (5) and test specimen (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110378921 CN102401765B (en) | 2011-11-24 | 2011-11-24 | Lateral restraining device for load test of steel-structure compression member |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110378921 CN102401765B (en) | 2011-11-24 | 2011-11-24 | Lateral restraining device for load test of steel-structure compression member |
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| CN102401765A CN102401765A (en) | 2012-04-04 |
| CN102401765B true CN102401765B (en) | 2013-05-22 |
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| CN 201110378921 Active CN102401765B (en) | 2011-11-24 | 2011-11-24 | Lateral restraining device for load test of steel-structure compression member |
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