CN2573616Y - Built-up steel structure pretensioned pedestal - Google Patents
Built-up steel structure pretensioned pedestal Download PDFInfo
- Publication number
- CN2573616Y CN2573616Y CN 02253891 CN02253891U CN2573616Y CN 2573616 Y CN2573616 Y CN 2573616Y CN 02253891 CN02253891 CN 02253891 CN 02253891 U CN02253891 U CN 02253891U CN 2573616 Y CN2573616 Y CN 2573616Y
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- pedestal
- steel
- cross beam
- longeron
- fixed cross
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Abstract
The utility model relates to a built-up steel structure pretensioned pedestal, particularly a device for applying prestress by a pretensioning method. The structure of the utility model is composed of two fixed cross beams at two ends, more than two longitudinal beams and a mobile movable cross beam, wherein and the longitudinal beams are fastened with the fixed cross beams into a whole. A longitudinal beam connecting system is installed intermittently between the corresponding inside lower parts of the longitudinal beams. The longitudinal beam is assembled by steel beams with certain length. The utility model has the advantages that the longitudinal beams and the fixed cross beams are assembled and combined by steel construction elements, the utility model has novelty and convenient assembly and disassembly, and the utility model is particularly suitable for the site operation of pretensioned prestress bridge with spans of 20m, 22m and 25m. The utility model has sufficient strength, rigidity and stability, and the stretching quality of the prestress concrete beam is improved. Meanwhile, the utility model has the advantages of low construction cost, construction period saving, no construction site pollution, environmental protection, etc.
Description
Technical field
The utility model relates to pre-tensioning system and apply prestressed equipment, particularly be the prestressed equipment that applies that the pin-connected panel steel work is opened earlier pedestal.
Background technology
With pre-tensioning system concrete component is applied prestressing technique and be widely used in the building operations, particularly in various municipal engineering such as railroad bridge construction, use.This technology device therefor---the kind of opening pedestal earlier is also many, and summarizing has fixed elder generation to open a pedestal and a portable assembly unit concrete filled steel tube formula elder generation pedestal.It is earth excavation at the construction field (site) that the pedestal structure is opened by fixed elder generation, is made into two pier formulas with a large amount of sheet stone concretes in the earthwork that excavates and opens pedestals earlier as heavy frame, opens earlier to be equipped with on pedestal in each pier formula fixedly to apply prestressed fixed head and anchor clamps; It is that frame type is opened pedestal earlier that the another kind of structure of pedestal is opened by fixed elder generation, its structure is an earth excavation at the construction field (site), in the earthwork that excavates with two concrete pedestals of a large amount of slabstone concrete for making, using fixing steel plate welding beam on the concrete pedestal is heavy frame, and the fixed head and the anchor clamps that fixedly apply the prestressing force hardware are housed on the crossbeam.The said fixing formula is opened pedestal earlier and is applicable to that precast beam quantity is big as large bridge.But along with 20m, 22m, 25m stride the application of footpath pre-tensioned prestressing beam, beam is restricted from the traffic condition that precast yard is transported to the job site, has limited applying of 22m, 25m beam.The weak point that pedestal is opened by fixed elder generation is disposable having high input, and construction is slow, and concrete pedestal dismounting consumption manpower was big when engineering was withdrawn, fund is many, can not reuse again, has bigger waste.
Portable assembly unit concrete filled steel tube formula open earlier a pedestal be by compression leg, compression leg two ends that concrete filled steel tube is made be the shaped steel column and in structural steel frame the balanced body of load stone ballast connect to form.Except that critical pieces such as compression leg, column and balanced body can have enough to meet the need, but still have the material that can not have enough to meet the need and the waste of manpower, and being positioned at underground hole as balanced body, the people must dig pit, drop into when the interior load stone ballast material of framework is withdrawn and all can not take away, also have bigger waste.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of above-mentioned technology, provides a kind of construction rapid, easy accessibility, and disposable consumable material is few, and intensity is greatly also reusable to apply a prestressed pin-connected panel steel work pedestal earlier to concrete component.
The utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of pin-connected panel steel work is opened pedestal earlier and is included and be positioned at the fixed cross beam of opening the pedestal two ends earlier, with the longeron more than two of the fastening one of two ends fixed cross beam, the stretch-draw end of fixed cross beam one side stretch-draw steel strand moveable crossbeam arranged; Be interrupted between the longeron relative inner bottom longeron connection structure that fastens as one with longeron is housed; Longeron is that the girder steel by certain-length is assemblied to form.
The beneficial effects of the utility model are:
1. longeron of the present utility model and longeron and fixed cross beam all are to be formed by the steel construction piece assembling combination, novel structure is simple, easy accessibility, applicability is strong, suitable especially bridge prestress site operation uses, answer concrete bridge occupancy volume in Urban Bridge and super highway bridge big in advance as span≤25m, what general stream crossing bridge, overpass bridge etc. were all selected this type of span for use answers the concrete bridge-type structure in advance, 20m, 22m, 25m are striden footpath pre-tensioned prestressing beam can be made at the construction field (site), it is very convenient to construct, and the utility model is applied it advantage is provided.
2. the utlity model has sufficient intensity, rigidity and stability, can improve the stretch-draw quality of prestress concrete beam, also have simultaneously reduce construction cost, save the duration, the job site is pollution-free, advantages such as protection environment.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is a C enlarged drawing among Fig. 1;
Fig. 4 is an A-A profile among Fig. 1;
Fig. 5 is a B-B profile among Fig. 2.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:
The utility model is that a kind of pin-connected panel steel work is opened pedestal earlier, and its structure includes and is positioned at the fixed cross beam 3 of opening the pedestal two ends earlier, with the longeron more than two 4 of two ends fixed cross beam 3 fastening one, the stretch-draw end of fixed cross beam 3 one sides stretch-draw steel strand 11 moveable crossbeams 2 arranged; Be interrupted between the longeron 4 relative inner bottoms longeron connection structure 7 that fastens as one with longeron 4 is housed; Longeron 4 is that the girder steel 4-1 by certain-length is assemblied to form.
Every steel strand of the utility model 11 stretch-draw horizontal forces are born by two longerons 4, and the girder steel 4-1 of assembly unit longeron 4 is by constituting at the top and bottom of two i iron 8 welding steel 9; The assembly unit end face of girder steel 4-1 is welded with flange 4-2, and securing member 5 is made of nut 5-2, bolt 5-1.Bolt 5-1 passes assembly unit end face flange 4-2 girder steel 4-1 is screwed realization assembly unit connection with nut 5-2.Longeron 4 of the present utility model can be striden the footpath according to site contour condition and plate-girder and be selected assembly unit growth line or short-term 20-80m, and can guarantee the stable of pedestal.
Being positioned at the utility model two ends respectively has a fixed cross beam 3, and fixed cross beam 3 is that to be welded into the cross section by steel plate be square crossbeam, and securing member 3-1 fastens as one longeron 4 and fixed cross beam 3.Steel fixedly gooseneck 3 as the usefulness of the anchoring of prestressing tendon.
The wheel 1 that can move along cross track 10-1, long rails 10-2 is arranged at the bottom of described moved cross beam 2, the hollow jack 12 of stretch-draw steel strand 11 is housed in the moved cross beam 2, and the ground tackle 13 that passes steel strand 11 is clipped between the side of the oil cylinder 12-1 of hollow jack and fixed cross beam 3.Moved cross beam 2 is as the stretch-draw of prestressing tendon and put the usefulness of opening, and the power of stretch-draw is utilized the mobile stretch-draw of finishing steel strand 11 of moved cross beam 2 from hollow jack 12.
Described longeron connection structure 7 is to be welded into cross or M shape framework 7-2 with steel pipe, and this framework 7-2 is connected as a single entity with securing member 7-1 and two longerons 4.Longeron connection structure 7 is reinforced longeron 4 on the one hand, but support shuttering on the other hand is convenient to make and is applied prestressed concrete component.There is the elder generation of support to open pedestal chock 14 at fixed cross beam 3 and longeron 4 bottoms.
Below use of the present utility model is described:
At first will apply prestressed steel strand 11 in advance and arrange by designing requirement, pass the utility model one end fixed cross beam after, pass the other end again near the hollow jack 12 in fixed cross beam 3, ground tackle 13 and the moved cross beam 2 of moved cross beam 2 one sides.Driving moved cross beam 2 longitudinally track 10-2 moves, and the oil cylinder 12-1 in the hollow jack 12 withstand on ground tackle 13 on the crossbeam side, by moved cross beam 2 stretch-draw steel strand 11, after the prestressing force in the steel strand 11 of stretch-draw reaches design load, stop stretch-draw.Template is placed on the longeron connection structure 7, and steel strand 11 water and are filled in the concrete in the template, finish that concrete component is applied the prestressing force preparation work, can make and apply prestressed concrete beam.
Claims (7)
1. a pin-connected panel steel work is opened pedestal earlier, it is characterized in that the pin-connected panel steel work opens pedestal earlier and include and be positioned at the fixed cross beam (3) of opening the pedestal two ends earlier, with the longeron more than two (4) of the fastening one of two ends fixed cross beam (3), the stretch-draw end of fixed cross beam (3) one sides stretch-draw steel strand (11) moveable crossbeams (2) arranged; Be interrupted between longeron (4) the relative inner bottom longeron connection structure (7) that fastens as one with longeron (4) is housed; Longeron (4) is that the girder steel (4-1) by certain-length is assemblied to form.
2. pedestal is opened by elder generation according to claim 1, it is characterized in that described girder steel (4-1) is to be made of the top and bottom welding steel (9) at two i iron (8); The assembly unit end face of girder steel (4-1) is welded with flange (4-2), and the flange (4-2) that securing member (5) passes the assembly unit end face connects girder steel (4-1) assembly unit.
3. pedestal is opened by elder generation according to claim 2, it is characterized in that described securing member (5) is to be made of nut (5-2), bolt (5-1).
4. pedestal is opened by elder generation according to claim 1, it is characterized in that described fixed cross beam (3) is that to be welded into the cross section by steel plate be square crossbeam, and securing member (3-1) fastens as one longeron (4) and fixed cross beam (3).
5. pedestal is opened by elder generation according to claim 1, the bottom that it is characterized in that described moved cross beam (2) has can be along horizontal stroke, long rails (10-1), (10-2) mobile wheel (1), the hollow jack (12) of stretch-draw steel strand (11) is housed in the moved cross beam (2), and the ground tackle (13) that passes steel strand (11) is clipped between the side of the oil cylinder (12-1) of hollow jack and fixed cross beam (3).
6. open pedestal according to the elder generation described in claim 1 or 2, it is characterized in that described longeron connection structure (7) is to be welded into cross or M shape framework (7-2) with steel pipe, this framework (7-2) is connected as a single entity with securing member (7-1) and two longerons (4).
7. open pedestal according to the elder generation described in the claim 1, it is characterized in that having the elder generation of support to open pedestal chock (14) at fixed cross beam (3) and longeron (4) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02253891 CN2573616Y (en) | 2002-09-05 | 2002-09-05 | Built-up steel structure pretensioned pedestal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02253891 CN2573616Y (en) | 2002-09-05 | 2002-09-05 | Built-up steel structure pretensioned pedestal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2573616Y true CN2573616Y (en) | 2003-09-17 |
Family
ID=33722909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02253891 Expired - Lifetime CN2573616Y (en) | 2002-09-05 | 2002-09-05 | Built-up steel structure pretensioned pedestal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2573616Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839063A (en) * | 2010-05-25 | 2010-09-22 | 中铁十七局集团第三工程有限公司 | Movable steel base for constructing prefabricated beam and standard joint thereof |
| CN102431087A (en) * | 2011-12-09 | 2012-05-02 | 大连大金马基础建设有限公司 | Prestressed concrete square pile pretension operating platform |
| CN103255718A (en) * | 2013-04-28 | 2013-08-21 | 中交第三公路工程局有限公司 | Pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device and tensioning technology |
| CN106894343A (en) * | 2017-01-24 | 2017-06-27 | 浙江大学宁波理工学院 | Prestressed high-strength steel strand wires assembled stretching bed seat |
| CN106906753A (en) * | 2017-01-24 | 2017-06-30 | 浙江大学宁波理工学院 | Without the U-shaped reinforced concrete member method of anchor prestressed high-strength steel wire mesh |
| CN108000690A (en) * | 2018-01-11 | 2018-05-08 | 南京大地建设科技有限责任公司 | Precast prestressed concrete composite beam production mould, production equipment and production technology |
| CN109702881A (en) * | 2019-03-13 | 2019-05-03 | 秦山伟业建设集团有限公司 | A kind of large span pre-tensioning system T beam Precasting Pedestal Construction method |
| CN114770729A (en) * | 2022-06-07 | 2022-07-22 | 德州海天机电科技有限公司 | Self-supporting load tensioning system for prestressed bridge hollow slab with adjustable tensioning steel beam |
| CN114953163A (en) * | 2022-06-16 | 2022-08-30 | 中交(临沂)建筑科技有限公司 | Movable pre-tensioning method prestress hollow slab production pedestal |
-
2002
- 2002-09-05 CN CN 02253891 patent/CN2573616Y/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839063A (en) * | 2010-05-25 | 2010-09-22 | 中铁十七局集团第三工程有限公司 | Movable steel base for constructing prefabricated beam and standard joint thereof |
| CN101839063B (en) * | 2010-05-25 | 2011-08-24 | 中铁十七局集团第三工程有限公司 | Movable steel base for constructing prefabricated beam and standard joint thereof |
| CN102431087A (en) * | 2011-12-09 | 2012-05-02 | 大连大金马基础建设有限公司 | Prestressed concrete square pile pretension operating platform |
| CN102431087B (en) * | 2011-12-09 | 2014-07-16 | 大连大金马基础建设有限公司 | Prestressed concrete square pile pretension operating platform |
| CN103255718A (en) * | 2013-04-28 | 2013-08-21 | 中交第三公路工程局有限公司 | Pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device and tensioning technology |
| CN103255718B (en) * | 2013-04-28 | 2015-04-08 | 中交第三公路工程局有限公司 | Pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device and tensioning technology |
| CN106894343A (en) * | 2017-01-24 | 2017-06-27 | 浙江大学宁波理工学院 | Prestressed high-strength steel strand wires assembled stretching bed seat |
| CN106906753A (en) * | 2017-01-24 | 2017-06-30 | 浙江大学宁波理工学院 | Without the U-shaped reinforced concrete member method of anchor prestressed high-strength steel wire mesh |
| CN108000690A (en) * | 2018-01-11 | 2018-05-08 | 南京大地建设科技有限责任公司 | Precast prestressed concrete composite beam production mould, production equipment and production technology |
| CN109702881A (en) * | 2019-03-13 | 2019-05-03 | 秦山伟业建设集团有限公司 | A kind of large span pre-tensioning system T beam Precasting Pedestal Construction method |
| CN114770729A (en) * | 2022-06-07 | 2022-07-22 | 德州海天机电科技有限公司 | Self-supporting load tensioning system for prestressed bridge hollow slab with adjustable tensioning steel beam |
| CN114770729B (en) * | 2022-06-07 | 2023-11-28 | 德州海天机电科技有限公司 | Self-sustaining load tensioning system for prestressed bridge hollow slab with adjustable tensioning steel beam |
| CN114953163A (en) * | 2022-06-16 | 2022-08-30 | 中交(临沂)建筑科技有限公司 | Movable pre-tensioning method prestress hollow slab production pedestal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120905 Granted publication date: 20030917 |