CN205735486U - A kind of pre-tensioned concrete hollow plate steel strand tension and put a structure - Google Patents
A kind of pre-tensioned concrete hollow plate steel strand tension and put a structure Download PDFInfo
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- CN205735486U CN205735486U CN201620537319.2U CN201620537319U CN205735486U CN 205735486 U CN205735486 U CN 205735486U CN 201620537319 U CN201620537319 U CN 201620537319U CN 205735486 U CN205735486 U CN 205735486U
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- tension frame
- tension
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Abstract
nullThis utility model relates to a kind of pre-tensioned concrete hollow plate steel strand tension and puts a structure，Including precast pedestal，Precast pedestal one end sets anchorage beam，One end of anchoring prestress steel strand wires，The precast pedestal other end sets stretch-drawing beam，Crossbeam in tension frame is set inside stretch-drawing beam，Anchor with the prestress wire other end，The outer crossbeam of tension frame is set outside stretch-drawing beam，It is connected by running through the screw rod of stretch-drawing beam between the outer crossbeam of crossbeam and tension frame in tension frame，Screw rod is provided with nut between the outer crossbeam of stretch-drawing beam and tension frame one section，It is provided with stretch-draw jack between the outer crossbeam of stretch-drawing beam and tension frame，Described anchorage beam is portable structure，It is provided with between anchorage beam and precast pedestal and puts a sandbox，A described sandbox of putting includes steel bushing and piston，The steel bushing one end putting a sandbox acts against on precast pedestal，The piston one end putting a sandbox acts against on anchorage beam.
Description
Technical field
This utility model relates to concrete core slab prefabricating technique field, is specifically related to a kind of prefabricated sky of pre-tensioning system
Core steel strand tension and put a structure.
Background technology
Pre-tensioned concrete hollow plate because its deadweight is little, convenient transportation, the suitability be strong, assemblingization degree high, extensively
Apply in bridges in highway engineering construction.The stretch-draw of prestress wire and put the important ring of Zhang Zuowei precast hollow slab construction
Joint, is also the cored slab key factor that has relatively high bearing capacity.The entitled " stretch-draw of pretensioned prestressing steel strand wires and putting
" document of (Chinese periodical " harbor work's technology ", in June, 2002, No.2) discloses a kind of stretch-draw and put a structure, such as Fig. 1 institute
Showing, set anchorage beam 2 ' in precast pedestal 1 one end, for one end of anchoring prestress steel strand wires 3, precast pedestal 1 other end sets
Stretch-drawing beam 4, is provided with crossbeam 5 in tension frame inside stretch-drawing beam 4, anchor with prestress wire 3 other end, stretch-drawing beam 4
Outside sets the outer crossbeam 6 of tension frame, by running through the screw rod 7 of stretch-drawing beam 4 even between crossbeam 5 and the outer crossbeam 6 of tension frame in tension frame
Connecing, screw rod 7 is provided with nut 8, at the outer crossbeam of stretch-drawing beam and tension frame between the outer crossbeam of stretch-drawing beam and tension frame one section
Between set stretch-draw jack 9, during stretch-draw, moved by the jack 9 piston elongation outer crossbeam 6 of pushing tow tension frame and realize prestress steel twist
Line stretch-draw, after stretch-draw puts in place, tightens the nut 8 on screw rod 7 to stretch-drawing beam 4, makes prestress steel twist line position fix；Put and open
Time, first jack 9 piston is extended LAP again, in order to unclamped by nut 8, bounce back jack piston the most again, it is achieved puts
?.Said structure, also to extend LAP again due to piston when jack is put, easily causes super of steel strand wires and occurs
Fracture, causes occurring security incident and beam body to damage.
Summary of the invention
The purpose of this utility model is the problem existed when putting for prestress wire stretch-draw in prior art, carries
Overpull can be avoided to put a pre-tensioned concrete hollow plate stretch-draw and put a structure for one.
The technical solution of the utility model is as follows:
A kind of pre-tensioned concrete hollow plate steel strand tension and put a structure, including precast pedestal, precast pedestal one end sets
Anchorage beam, one end of anchoring prestress steel strand wires, the precast pedestal other end sets stretch-drawing beam, sets tension frame inside stretch-drawing beam
Interior crossbeam, anchors with the prestress wire other end, sets the outer crossbeam of tension frame, crossbeam and pulling force in tension frame outside stretch-drawing beam
Connecting by running through the screw rod of stretch-drawing beam between the outer crossbeam of frame, screw rod sets between the outer crossbeam of stretch-drawing beam and tension frame one section
There is nut, between the outer crossbeam of stretch-drawing beam and tension frame, be provided with stretch-draw jack, it is characterised in that: described anchorage beam is for moving
Dynamic formula structure, is provided with between anchorage beam and precast pedestal and puts a sandbox, described in put a sandbox and include steel bushing and can be along steel bushing
The piston that inwall reciprocatingly slides, the steel bushing one end putting a sandbox acts against on precast pedestal, puts the top, piston one end of a sandbox
Lean against on anchorage beam.
This utility model uses sandbox to put, efficiently avoid easily occur super of steel strand wires when jack is put and
Rupture, it is to avoid generation security incident and beam body are damaged.This utility model is safe and reliable, easy construction, and sandbox
Make simple, put and to draw materials conveniently with the former material such as husky, low cost, there is preferable economic benefit.
Accompanying drawing explanation
Fig. 1 is that a structural representation is put in the stretch-draw of prior art；
Fig. 2 is that a structural representation is put in stretch-draw of the present utility model；
Fig. 3 is the structural representation putting a sandbox that this utility model uses.
Detailed description of the invention
As shown in Figure 2 and Figure 3, this utility model includes that precast pedestal 1, precast pedestal 1 one end set anchorage beam 2, and anchoring is pre-
One end of prestress steel strand 3, precast pedestal 1 other end sets stretch-drawing beam 4, sets crossbeam 5 in tension frame inside stretch-drawing beam 4, with
Prestress wire 3 other end anchors, and sets the outer crossbeam 6 of tension frame, outside crossbeam 5 is with tension frame in tension frame outside stretch-drawing beam 4
Connecting by running through the screw rod 7 of stretch-drawing beam between crossbeam 6, screw rod 7 sets between the outer crossbeam of stretch-drawing beam and tension frame one section
There is nut 8, between the outer crossbeam 6 of stretch-drawing beam 4 and tension frame, be provided with stretch-draw jack 9；Described anchorage beam 2 is portable knot
Structure, is provided with between anchorage beam 2 and precast pedestal 1 and puts a sandbox 10, described in put a sandbox 10 and include steel bushing 11 and can be along steel bushing
The piston 12 that cylinder inwall reciprocatingly slides, steel bushing 11 one end putting a sandbox acts against on precast pedestal 1, puts the piston of a sandbox
12 one end act against on anchorage beam 2.
Putting a sandbox 10 described in as it is shown on figure 3, and include steel bushing 11 and piston 12, piston 12 can be reciprocal in steel bushing 11
Slide.Steel bushing 11 top is provided with sand inlet 13 and sand inlet valve 14, is provided with sand outlet 15 and sand outlet bottom steel bushing 11
Valve 16.
When this utility model is embodied as, the material of the piston and steel bushing of putting a sandbox uses seamless steel pipe to make, and lives
The spacing of plug and steel bushing barrel is 0.5mm, and rubbing surface to carry out bright and clean process, and the effective travel distance of sandbox piston is at least
180mm, meets steel strand wires and relaxes requirement.Sand inlet diameter is set to 250mm, and sand outlet diameter is set to 16mm.
Before tension steel strand, sandbox piston is pulled out 180-200mm, by sand inlet, steel bushing filled sand and smash
Real, sand inlet valve is tightened.During stretch-draw, the outer crossbeam of jack pushing tow tension frame moves laterally, and in driving tension frame, crossbeam will
Steel strand tension is to predetermined value；Due to anchorage beam removable frame, during stretch-draw, steel strand wires drive anchorage beam to precast pedestal
Direction is moved, and makes to put a sandbox stress and is extruded.When putting, a sandbox sand outlet valve will be put and open, husky from going out in steel bushing
Husky mouth uniformly flows out, and makes to put the extruding force suffered by a sandbox and is unloaded, and is opened so that steel strand wires effectively put.
Claims (4)
1. pre-tensioned concrete hollow plate steel strand tension and put a structure, including precast pedestal, precast pedestal one end sets anchor
Gu crossbeam, one end of anchoring prestress steel strand wires, the precast pedestal other end sets stretch-drawing beam, sets in tension frame inside stretch-drawing beam
Crossbeam, anchors with the prestress wire other end, sets the outer crossbeam of tension frame, crossbeam and tension frame in tension frame outside stretch-drawing beam
Connecting by running through the screw rod of stretch-drawing beam between outer crossbeam, screw rod is provided with between the outer crossbeam of stretch-drawing beam and tension frame one section
Nut, is provided with stretch-draw jack between the outer crossbeam of stretch-drawing beam and tension frame, it is characterised in that: described anchorage beam is portable
Structure, is provided with between anchorage beam and precast pedestal and puts a sandbox, described in put a sandbox and include steel bushing and can be along steel bushing inwall
The piston reciprocatingly slided, the steel bushing one end putting a sandbox acts against on precast pedestal, and the piston one end putting a sandbox acts against
On anchorage beam.
Pre-tensioned concrete hollow plate steel strand tension the most according to claim 1 and put a structure, it is characterised in that: described
The steel bushing top putting a sandbox is provided with sand inlet and sand inlet valve, and bottom is provided with sand outlet and sand outlet valve.
Pre-tensioned concrete hollow plate steel strand tension the most according to claim 2 and put a structure, it is characterised in that: described
The a diameter of 250mm of sand inlet, a diameter of 16mm of sand outlet.
Pre-tensioned concrete hollow plate steel strand tension the most according to claim 1 and put a structure, it is characterised in that: described
The spacing putting a sandbox piston and steel bushing inwall is 0.5mm, the effective travel distance at least 180mm of sandbox piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620537319.2U CN205735486U (en) | 2016-06-05 | 2016-06-05 | A kind of pre-tensioned concrete hollow plate steel strand tension and put a structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620537319.2U CN205735486U (en) | 2016-06-05 | 2016-06-05 | A kind of pre-tensioned concrete hollow plate steel strand tension and put a structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205735486U true CN205735486U (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620537319.2U Active CN205735486U (en) | 2016-06-05 | 2016-06-05 | A kind of pre-tensioned concrete hollow plate steel strand tension and put a structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN205735486U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441122A (en) * | 2018-12-18 | 2019-03-08 | 宁波大学 | A kind of prestressed bringing device of I-beam |
-
2016
- 2016-06-05 CN CN201620537319.2U patent/CN205735486U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441122A (en) * | 2018-12-18 | 2019-03-08 | 宁波大学 | A kind of prestressed bringing device of I-beam |
| CN109441122B (en) * | 2018-12-18 | 2023-10-31 | 宁波大学 | I-beam prestress application device |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |