CN102840996B - Counter-pull prepressing device for detecting bearing capacity and deformation of construction bracket, and prepressing method - Google Patents
Counter-pull prepressing device for detecting bearing capacity and deformation of construction bracket, and prepressing method Download PDFInfo
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- CN102840996B CN102840996B CN201210351990.4A CN201210351990A CN102840996B CN 102840996 B CN102840996 B CN 102840996B CN 201210351990 A CN201210351990 A CN 201210351990A CN 102840996 B CN102840996 B CN 102840996B
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- distribution beam
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- joist steel
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- 238000010276 construction Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 131
- 239000010959 steel Substances 0.000 claims abstract description 131
- 238000001514 detection method Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims 4
- 238000005096 rolling process Methods 0.000 abstract description 3
- 230000035515 penetration Effects 0.000 abstract 5
- 238000004873 anchoring Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The invention relates to a counter-pull prepressing device for detecting the bearing capacity and deformation of a construction bracket. The counter-pull prepressing device comprises an upper distribution beam, a lower distribution beam, a straight-through jack, a steel strand and pre-buried fine rolling threaded steel, wherein the lower distribution beam is arranged at the bottom of a detected bracket and is anchored on the pre-buried fine rolling threaded steel; the upper distribution beam is arranged at the top of the detected bracket; a first penetration hole is formed in the middle of the upper distribution beam; a second penetration hole is formed in the middle of the lower distribution beam and is coincident with the central line of the first penetration hole; the straight-through jack is arranged above the middle of the upper distribution beam; and one end of the steel strand is fixed on an anchoring plate of the straight-through jack through a clamping sheet, and the other end of the steel strand sequentially penetrates through the straight-through jack, the first penetration hole, the detected bracket and the second penetration hole from top to bottom and is anchored on the lower distribution beam through an anchor. The invention also provides a prepressing method by using the device. The counter-pull prepressing device can detect the bearing capacity and the deformation of the detected bracket, and a phenomenon of overlarge partial deformation caused by concentrated loads is avoided.
Description
Technical field
The present invention relates to a kind of prepressing device, be specifically related to a kind of anti-prepressing device that draws that detects construction bracket load-bearing capacity and distortion.
Background technology
In construction after support has been set up; conventionally can carry out precompressed to support and check its load-bearing capacity and deformation; generally adopt and on support workbench, pile up sand pocket and carry out board design load; although this precompressed mode can reflect on-site actual situations preferably, high to the workbench space requirement on support top, pile up sand pocket process slowly, the personnel that need and the shortcoming such as material is more.At present, also have and utilize prepressing device to anti-load-bearing capacity and the deformation that draws precompressed to carry out checking bracket of support, but in practical operation, due to the built-in fitting of prepressing device anchored end because of a variety of causes often can not be with stretching end on same vertical curve, cause counter draw precompressed process in can produce horizontal component, thereby affect support stability safety.
Summary of the invention
The object of this invention is to provide a kind of anti-prepressing device that draws that detects construction bracket load-bearing capacity and distortion, it can check out load-bearing capacity and the deformation of tested support, can also avoid tested support to cause the situation that local deformation is large because of load.
Another object of the present invention is to provide a kind of anti-method of drawing prepressing device to carry out precompressed that detects construction bracket load-bearing capacity and distortion.
The anti-prepressing device that draws of detection construction bracket load-bearing capacity of the present invention and distortion, comprises distribution beam, lower distribution beam, centre-hole jack, steel strand wires and pre-buried fining twisted steel, described lower distribution beam is arranged on the bottom of tested support, this lower distribution beam and the pre-buried fining twisted steel anchor connection that is embedded in ground, described upper distribution beam is arranged on the top of tested support, be provided with the first via hole at the middle part of upper distribution beam, be provided with the second via hole at the middle part of lower distribution beam, this second via hole overlaps with the center line of the first via hole, centre-hole jack is arranged on the top at distribution beam middle part, and corresponding with the first via hole, one end of described steel strand wires is anchored at by intermediate plate on the anchor slab of centre-hole jack, the other end of steel strand wires is from top to bottom successively through centre-hole jack, the first via hole of upper distribution beam, the second via hole of tested support and lower distribution beam, and by extruding anchor and lower distribution beam anchor connection.
Below lower distribution beam middle part, be provided with the billet with the 3rd via hole, the 3rd via hole is corresponding with the second via hole of lower distribution beam.
Described upper distribution beam comprises two joist steel that are laterally arranged side by side, be welded with the junction steel plate that connects two joist steel along the length direction interval of joist steel in the upper and lower side of two joist steel, the length direction interval along joist steel on the web of joist steel is welded with the steel plate of putting more energy into.
Described lower distribution beam comprises two joist steel that are laterally arranged side by side, be welded with the junction steel plate that connects two joist steel along the length direction interval of joist steel in the upper and lower side of two joist steel, the length direction interval along joist steel on the web of joist steel is welded with the steel plate of putting more energy into.
The anti-method of drawing prepressing device to carry out precompressed of detection construction bracket load-bearing capacity of the present invention and distortion, its step is as follows:
Step 1, assembled upper distribution beam; Two joist steel are laterally arranged side by side, be welded to connect the junction steel plate of two joist steel along the length direction interval of joist steel in the upper and lower side of two joist steel, the steel plate of putting more energy into is welded at length direction interval along joist steel on the web of joist steel, and is provided with the first via hole at assembled good upper distribution beam middle part;
Step 2, assembled lower distribution beam; Two joist steel are laterally arranged side by side, on the web of the junction steel plate that is welded to connect two joist steel along the length direction interval of joist steel in the upper and lower side of two joist steel at joist steel along the length direction interval welding of the joist steel steel plate of putting more energy into, and be provided with the second via hole at assembled good lower distribution beam middle part, both ends in lower distribution beam are provided with respectively mounting hole, below lower distribution beam middle part, welding has the billet of the 3rd via hole, and the 3rd via hole of this billet is corresponding with the second via hole;
Step 3, pre-buried fining twisted steel; Bury on the ground two fining twisted steels underground;
Step 4, installs distribution beam; Upper distribution beam is arranged on the top of tested support;
Step 5, installs lower distribution beam; Lower distribution beam is arranged on the bottom of tested support, and mounting hole by lower distribution beam both ends with nut respectively be embedded in two pre-buried finish rolling deformed bars on the ground; Anchor connection, and guarantee that the center line of the second via hole of lower distribution beam and the first via hole of upper distribution beam overlaps;
Step 6, installs centre-hole jack; Centre-hole jack be arranged on distribution beam the first via hole directly over;
Step 7, installs steel strand wires; One end of steel strand wires is anchored at by intermediate plate on the anchor slab of centre-hole jack, the other end of steel strand wires is the second via hole of the first via hole, tested support and the lower distribution beam of through mode lifting jack, upper distribution beam successively, and is anchored in anchor head on the billet of lower distribution beam;
Step 8, starts through mode lifting jack; Start the tested support of through mode jack pair and carry out stretch-draw precompressed.
Beneficial effect of the present invention:
(1) can check out load-bearing capacity and the deformation of tested support;
(2) the anti-adverse effect of drawing precompressed to produce horizontal component of effective solution, has guaranteed tested support stability safety;
(3) be delivered to again on tested support owing to load can being converted to evenly load, therefore effectively reduced because load causes the large problem of tested support local deformation, reduced the load impact of stretching end on tested support.
(4) this apparatus structure is simple, easy to use, cost is low, applied widely.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of upper distribution beam;
Fig. 3 is the cut-open view along A-A line in Fig. 2;
Fig. 4 is the structural representation of lower distribution beam.
Embodiment
Now by reference to the accompanying drawings the present invention is described in further detail:
The anti-prepressing device that draws of detection construction bracket load-bearing capacity as shown in Figure 1 and distortion, comprises distribution beam 15, lower distribution beam 16, centre-hole jack 6, steel strand wires 7 and pre-buried fining twisted steel 12, lower distribution beam 16 is arranged on the bottom of tested support (not shown), this lower distribution beam 16 and pre-buried fining twisted steel 12 anchor connections that are embedded in ground, upper distribution beam 15 is arranged on the top of tested support, be provided with the first via hole 4 at the middle part of upper distribution beam 15, be provided with the second via hole 14 at the middle part of lower distribution beam 16, this second via hole 14 overlaps with the center line of the first via hole 4, below lower distribution beam 16 middle parts, be welded with the billet 10 with the 3rd via hole, the 3rd via hole is corresponding with the second via hole 14 of lower distribution beam 16, centre-hole jack 6 is arranged on the top at distribution beam 15 middle parts, and corresponding with the first via hole 4, one end of steel strand wires 7 is anchored at by intermediate plate on the anchor slab 9 of centre-hole jack 6, the other end of steel strand wires 7 is from top to bottom successively through centre-hole jack 6, the first via hole 4 of upper distribution beam 15, the second via hole 14 of tested support and lower distribution beam 16, and be anchored at by anchor head 11 on the billet 10 of lower distribution beam 16.This device converts the load of centre-hole jack 6 to evenly load by upper distribution beam 15 and is delivered on tested support again, effectively reduce because load causes the large problem of tested support local deformation, reduced the load impact of stretching end on tested support.
As shown in Figure 2, Figure 3 and Figure 4, upper distribution beam 15 comprises two joist steel that are laterally arranged side by side 1, be welded with the junction steel plate 2 that connects two joist steel 1 along the length direction interval of joist steel 1 in the upper and lower side of two joist steel 1, the length direction interval along joist steel 1 on the web of joist steel 1 is welded with the steel plate 3 of putting more energy into.Lower distribution beam 16 comprises two joist steel that are laterally arranged side by side 1, be welded with the junction steel plate 2 that connects two joist steel 1 along the length direction interval of joist steel 1 in the upper and lower side of two joist steel 1, the length direction interval along joist steel 1 on the web of joist steel 1 is welded with the steel plate 3 of putting more energy into.Upper distribution beam 15, lower distribution beam 16 are except all having the effect of fixing centre-hole jack 6 anchor heads, upper distribution beam 15 also has the load of centre-hole jack 6 stretch-draw has been transformed into the evenly load in upper distribution beam 15, has reduced the distortion that tested support causes due to load.
The anti-method of drawing prepressing device to carry out precompressed of detection construction bracket load-bearing capacity of the present invention and distortion, its step is as follows:
Step 1, assembled upper distribution beam; Two joist steel 1 are laterally arranged side by side, be welded to connect the junction steel plate 2 of two joist steel 1 along the length direction interval of joist steel 1 in the upper and lower side of two joist steel 1, the steel plate 3 of putting more energy into is welded at length direction interval along joist steel 1 on the web of joist steel 1, and is provided with the first via hole 4 passing for steel strand wires 7 at assembled good upper distribution beam 15 middle parts;
Step 2, assembled lower distribution beam, two joist steel 1 are laterally arranged side by side, upper at two joist steel 1, downside is welded to connect the junction steel plate 2 of two joist steel 1 along the length direction interval of joist steel 1, the steel plate 3 of putting more energy into is welded at length direction interval along joist steel 1 on the web of joist steel 1, be provided with the second via hole 14 passing for steel strand wires 7 at assembled good lower distribution beam 16 middle parts, be provided with respectively the mounting hole 5 passing for pre-buried fining twisted steel 12 at the both ends of lower distribution beam 16, below lower distribution beam 16 middle parts, welding has the billet 10 of the 3rd via hole, the 3rd via hole of this billet 10 is corresponding with the second via hole 14,
Step 3, pre-buried fining twisted steel; Bury on the ground two pre-buried fining twisted steels 12 underground;
Step 4, installs distribution beam; Upper distribution beam 15 is arranged on the top of tested support;
Step 5, installs lower distribution beam; Lower distribution beam 16 is arranged on the bottom of tested support, and mounting hole 5 use nuts 13 by lower distribution beam 16 both ends respectively be embedded in two pre-buried fining twisted steel 12 anchor connections on the ground, and guarantee that second via hole 14 at lower distribution beam 16 middle parts overlaps with the center line of first via hole 4 at upper distribution beam 15 middle parts;
Step 6, installs centre-hole jack; Centre-hole jack 6 be arranged on distribution beam 15 middle parts the first via hole 4 directly over;
Step 7, installs steel strand wires; One end of steel strand wires 7 is anchored at by intermediate plate 8 on the anchor slab 9 of centre-hole jack 6, the other end of steel strand wires 7 is the second via hole 14 of the first via hole 4, tested support and the lower distribution beam 16 of through mode lifting jack, upper distribution beam 15 successively, and is anchored in anchor head 11 on the billet 10 of lower distribution beam 16;
Step 8, starts through mode lifting jack; Start through mode lifting jack 6 tested support is carried out to stretch-draw precompressed.
Stretch-draw precompressed divides 10 grades to carry out, and precompressed is carried out every grade according to 10% incremental change level need to hold lotus 10 minutes.
Claims (1)
1. the anti-method of drawing prepressing device to carry out precompressed that detects construction bracket load-bearing capacity and distortion, the anti-prepressing device that draws of described detection construction bracket load-bearing capacity and distortion comprises distribution beam (15), lower distribution beam (16), centre-hole jack (6), steel strand wires (7) and pre-buried fining twisted steel (12), described lower distribution beam is arranged on the bottom of tested support, this lower distribution beam and the pre-buried fining twisted steel anchor connection that is embedded in ground, described upper distribution beam is arranged on the top of tested support, be provided with the first via hole (4) at the middle part of upper distribution beam, be provided with the second via hole (14) at the middle part of lower distribution beam, this second via hole overlaps with the center line of the first via hole, centre-hole jack is arranged on the top at distribution beam middle part, and corresponding with the first via hole, one end of described steel strand wires is anchored at by intermediate plate on the anchor slab (9) of centre-hole jack, the other end of steel strand wires is from top to bottom successively through centre-hole jack, the first via hole of upper distribution beam, the second via hole of tested support and lower distribution beam, and by anchor head (11) and lower distribution beam anchor connection, below at lower distribution beam (16) middle part is provided with the billet (10) with the 3rd via hole, and the 3rd via hole is corresponding with second via hole (14) of lower distribution beam, described upper distribution beam (15) comprises two joist steel that are laterally arranged side by side (1), be welded with the junction steel plate (2) that connects two joist steel in the upper and lower side of two joist steel along the length direction interval of joist steel, on the web of joist steel, be welded with reinforcement steel plate (3) along the length direction interval of joist steel, described lower distribution beam (16) comprises two joist steel that are laterally arranged side by side (1), be welded with the junction steel plate (2) that connects two joist steel in the upper and lower side of two joist steel along the length direction interval of joist steel, on the web of joist steel, be welded with reinforcement steel plate (3) along the length direction interval of joist steel,
The anti-step of drawing prepressing device to carry out precompressed that detects construction bracket load-bearing capacity and distortion is as follows:
Step 1, assembled upper distribution beam; Two joist steel (1) are laterally arranged side by side, be welded to connect the junction steel plate (2) of two joist steel along the length direction interval of joist steel in the upper and lower side of two joist steel, on the web of joist steel, along the length direction interval welding reinforcement steel plate (3) of joist steel, be provided with the first via hole (4) at assembled good upper distribution beam (15) middle part;
Step 2, assembled lower distribution beam; Two joist steel (1) are laterally arranged side by side, be welded to connect the junction steel plate (2) of two joist steel along the length direction interval of joist steel in the upper and lower side of two joist steel, reinforcement steel plate (3) is welded at length direction interval along joist steel on the web of joist steel, be provided with the second via hole (14) at assembled good lower distribution beam (16) middle part, be provided with respectively mounting hole (5) at the both ends of lower distribution beam, below lower distribution beam middle part, welding has the billet (10) of the 3rd via hole, and the 3rd via hole of this billet is corresponding with the second via hole;
Step 3, pre-buried deformed bar; Bury on the ground two pre-buried fining twisted steels (12) underground;
Step 4, installs distribution beam; Upper distribution beam (15) is arranged on the top of tested support;
Step 5, installs lower distribution beam; Lower distribution beam (16) is arranged on the bottom of tested support, and mounting hole (5) by lower distribution beam both ends with nut (13) respectively be embedded in two pre-buried fining twisted steels (12) anchor connection on the ground, and guarantee that the center line of second via hole (14) of lower distribution beam and first via hole (4) of upper distribution beam (15) overlaps;
Step 6, installs centre-hole jack; Centre-hole jack (6) be arranged on distribution beam (15) the first via hole (4) directly over;
Step 7, installs steel strand wires; One end of steel strand wires (7) is anchored at by intermediate plate (8) on the anchor slab (9) of centre-hole jack (6), the other end of steel strand wires passes second via hole (14) of centre-hole jack, first via hole (4) of upper distribution beam (15), tested support and lower distribution beam (16) successively, and is anchored in anchor head (11) on the billet (10) of lower distribution beam (16);
Step 8, starts centre-hole jack; Start centre-hole jack (6) tested support is carried out to stretch-draw precompressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351990.4A CN102840996B (en) | 2012-09-20 | 2012-09-20 | Counter-pull prepressing device for detecting bearing capacity and deformation of construction bracket, and prepressing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351990.4A CN102840996B (en) | 2012-09-20 | 2012-09-20 | Counter-pull prepressing device for detecting bearing capacity and deformation of construction bracket, and prepressing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102840996A CN102840996A (en) | 2012-12-26 |
| CN102840996B true CN102840996B (en) | 2014-11-05 |
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| CN201210351990.4A Expired - Fee Related CN102840996B (en) | 2012-09-20 | 2012-09-20 | Counter-pull prepressing device for detecting bearing capacity and deformation of construction bracket, and prepressing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104764618B (en) * | 2015-03-19 | 2017-11-21 | 重庆交通建设(集团)有限责任公司 | A kind of bridge cantilever pours the controllable equivalent advanced press load test method of Hanging Basket |
| CN106501083B (en) * | 2016-12-12 | 2019-07-09 | 兰州理工大学 | Large scale structure multiple spot ground anchor type drag-line loading device and test method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0851163A2 (en) * | 1996-12-17 | 1998-07-01 | Holter Regelarmaturen GmbH & Co. KG | Electric drive for a valve or similar unit |
| DE202010006930U1 (en) * | 2010-05-19 | 2010-09-02 | Schramm, Horst, Dipl.-Phys. | Building system with locally produced large parts |
| CN101845794A (en) * | 2010-03-24 | 2010-09-29 | 中冶实久建设有限公司 | Prestress prepressing method of number 0 block construction support for rigid frame bridge and stayed-cable bridge |
| CN201738246U (en) * | 2010-07-22 | 2011-02-09 | 中建二局土木工程有限公司 | Ground loading and pressing device for continuous beam suspended bracket |
-
2012
- 2012-09-20 CN CN201210351990.4A patent/CN102840996B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0851163A2 (en) * | 1996-12-17 | 1998-07-01 | Holter Regelarmaturen GmbH & Co. KG | Electric drive for a valve or similar unit |
| CN101845794A (en) * | 2010-03-24 | 2010-09-29 | 中冶实久建设有限公司 | Prestress prepressing method of number 0 block construction support for rigid frame bridge and stayed-cable bridge |
| DE202010006930U1 (en) * | 2010-05-19 | 2010-09-02 | Schramm, Horst, Dipl.-Phys. | Building system with locally produced large parts |
| CN201738246U (en) * | 2010-07-22 | 2011-02-09 | 中建二局土木工程有限公司 | Ground loading and pressing device for continuous beam suspended bracket |
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| Publication number | Publication date |
|---|---|
| CN102840996A (en) | 2012-12-26 |
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Granted publication date: 20141105 |