CN114474360A - Pre-tensioning method precast beam self-anchored tensioning pedestal - Google Patents
Pre-tensioning method precast beam self-anchored tensioning pedestal Download PDFInfo
- Publication number
- CN114474360A CN114474360A CN202111672560.8A CN202111672560A CN114474360A CN 114474360 A CN114474360 A CN 114474360A CN 202111672560 A CN202111672560 A CN 202111672560A CN 114474360 A CN114474360 A CN 114474360A
- Authority
- CN
- China
- Prior art keywords
- tensioning
- anchoring
- precast beam
- self
- forming module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 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 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims description 11
- 238000004873 anchoring Methods 0.000 claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 238000009826 distribution Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000007547 defect Effects 0.000 description 5
- 230000007306 turnover Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 208000034189 Sclerosis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/043—Wire anchoring or tensioning means for the reinforcements
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to the technical field of precast beam tensioning pedestals, in particular to a self-anchored tensioning pedestal of a pre-tensioning precast beam, which comprises a precast beam forming module with a set length, and two tension anchoring modules, wherein the two ends of the precast beam forming module are respectively detachably connected with the two tension anchoring modules; the precast beam forming module supports two tensioning and anchoring modules, and each tensioning and anchoring module is provided with a tensioning mechanism for tensioning and pre-stressing steel beams; the modular self-anchored tensioning pedestal structure is adopted, structures such as uplift piles, reaction walls, underground connecting beams and the like are not needed, and equipment can be transferred and circulated according to construction requirements.
Description
Technical Field
The invention relates to the technical field of precast beam tensioning pedestals, in particular to a self-anchoring type tensioning pedestal for a precast beam by a pre-tensioning method.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The prestressed concrete simply supported beam generally adopts an assembly type construction method, and the upper structure of the prestressed concrete simply supported beam generally adopts a T-shaped beam, a hollow slab beam, a small box beam or an I-shaped beam. From the economic perspective, the prefabricated structure is more suitable for factory production.
The precast beam can be constructed by adopting a pre-tensioning method and a post-tensioning method, compared with post-tensioning method construction, the pre-tensioning method construction is simple, the anchoring is carried out by the bonding force of the prestressed steel beam and the concrete, a special anchor is not required to be consumed, the temporary anchor can be reused, the quality of a finished product is stable, and the economical efficiency is obvious during mass production.
However, large-scale fixed equipment such as a reaction wall, an uplift anchor pile, an underground connecting beam, a tensioning platform and the like needs to be arranged on a pre-tensioning construction production line, meanwhile, a prefabricated site needs to be deeply hardened, one-time investment is large, the site is fixed and cannot move, the transportation distance is long, or a large number of orders do not exist to continuously guarantee production, the disadvantage that the equipment cannot be turned over is shown, and therefore economy is poor. In addition, the bridge is mostly built on a highway or an expressway, the route extends far, a conventional pre-tensioning method is adopted to prefabricate the beam factory, a construction site needs to be laid at multiple positions along the route according to the transportation distance, the repeatability investment is large, most equipment cannot be dismantled for turnover use, and the prefabrication site faces the waste embarrassing situation after the project is finished.
Disclosure of Invention
The invention aims to provide a self-anchoring type tensioning pedestal for a pre-tensioning precast beam, which solves the problem that the tensioning pedestal for the pre-tensioning precast beam in the prior art cannot be rotated. In order to achieve the above object, the present invention is achieved by the following technical solutions:
the invention provides a pre-tensioning method precast beam self-anchoring type tensioning pedestal which comprises a precast beam forming module with a set length, and two pull-anchoring modules, wherein the two pull-anchoring modules are respectively arranged at two ends of the precast beam forming module and detachably connected with the two ends of the precast beam forming module;
the precast beam forming module supports two tensioning and anchoring modules, each tensioning and anchoring module is provided with a tensioning mechanism for tensioning and anchoring a prestressed steel beam, and the tensioning mechanisms are anchored on the tensioning and anchoring modules.
Furthermore, the precast beam forming module is provided with a counterweight, a prestressed steel beam guider and a prestressed steel beam bender, and the counterweight counteracts the uplifting force generated by the prestressed steel beam steering at the position of the prestressed steel beam bender.
Further, the precast beam forming module is formed by splicing a plurality of standard sections with set length.
Furthermore, each stretch-draw anchor module includes anchor section and stretch-draw section, the stretch-draw section is equipped with the stretch-draw platform truck, the anchor section is equipped with the jack, the jack with the stretch-draw platform truck passes through the steel pull rod and connects.
Furthermore, the bottom of the anchoring section is provided with an inclined strut, and the outer side of the inclined strut is higher than the inner side.
Further, each standard section includes frame construction, frame construction is "mouth" style of calligraphy, frame construction bottom inboard is equipped with the steel die block and locates the side form of both sides portion inboard.
Furthermore, the bottom corners and the middle of the frame structure are provided with longitudinally arranged lower chords which are connected through lower cross beams, the top corners of the frame structure are provided with longitudinally arranged upper chords which are connected through upper cross beams, the upper chords arranged at the bottom corners and the lower chords arranged at the top corners are supported through web members, and the upper cross beams are detachably connected with the upper chords.
Further, a first distribution beam is arranged between the steel bottom die and the inner side of the bottom of the frame structure.
Furthermore, the standard sections are spliced through flanges, and the upper chord is connected with the upper cross beam through the flanges.
Furthermore, triangular support structures are arranged on two transverse sides of the precast beam forming module.
The beneficial effects of the invention are as follows:
(1) the tensioning pedestal is formed by assembling the prefabricated beam forming module and the tensioning anchoring module, the tensioning mechanism is anchored by the tensioning anchoring module, the prefabricated beam forming module is used for supporting the tensioning anchoring module, uplift piles, reaction walls and underground connecting beams are not needed, a field can meet the tensioning requirement only by simple hardening, the defect that the tensioning pedestal cannot be rotated in the prior art is overcome, and equipment can be transferred and rotated according to construction requirements.
(2) The prefabricated beam forming module is provided with the balance weight, and the balance weight is used for offsetting the uplifting force generated by the steering of the prestressed steel beam at the position of the prestressed steel beam bender, so that the prefabricated beam forming module is prevented from buckling upwards at the position of the prestressed steel beam bender.
(3) The preset length of the precast beam forming module can be adjusted according to actual requirements, and the precast beam forming module can be applied to the manufacturing of single beams with different lengths and the simultaneous manufacturing of multiple beams, so that the application range of the tensioning pedestal is enlarged.
(4) The precast beam forming module is formed by splicing a plurality of standard sections with set lengths, can be automatically lengthened according to a precast site, is more favorable for turnover of a tensioning pedestal, and can be better suitable for the working condition of manufacturing a longer single-piece beam or a plurality of beams.
(5) The precast beam forming module is formed by splicing a plurality of standard sections with set lengths, when a certain standard section is damaged, the section can be replaced, local replacement is realized, the defect that the whole precast beam forming module is replaced due to the damage of a certain part of the precast beam forming module is overcome, and the waste of materials is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention. It will be further appreciated that the drawings are for simplicity and clarity and have not necessarily been drawn to scale. The invention will now be described and explained with additional specificity and detail through the use of the accompanying drawings in which:
FIG. 1 is a schematic view showing the overall structure of a self-anchored tension pedestal of a single beam according to the present invention;
FIG. 2 is a schematic diagram showing the overall structure of the self-anchored multi-deck tensioning pedestal according to the present invention;
FIG. 3 is an isometric view of the self-anchoring tension block overall structural frame structure of the present invention;
FIG. 4 is a front view of the self-anchoring tension block overall structural frame structure of the present invention;
FIG. 5 is an isometric view of a self-anchored tensioning pedestal precast beam forming module of the present invention;
FIG. 6 shows a transverse cross-sectional view of the self-anchoring tensioning mount of the present invention;
FIG. 7 is an isometric view of a tension anchor module of the self-anchoring tension bed of the present invention;
FIG. 8 illustrates a cross-sectional view of a tension section of the self-anchoring tension block of the present invention;
fig. 9 shows a schematic view of the self-anchored tensioning pedestal triangular support structure of the present invention.
In the figure, 1 precast beam forming module, 2 tensioning anchor module, 3 first standard section, 4 second standard section, 5 third standard section, 6 anchor section, 7 tensioning section, 8 precast beam, 9 prestressed steel beam, 10 prestressed steel beam guider, 11 prestressed steel beam bender, 12 first distribution beam, 13 steel bottom die, 14 tensioning trolley, 15 jack, 16 steel pull rod, 17 counterweight, 18 second distribution beam, 19 first splicing part, 20 second splicing part, 21 third splicing part, 22 fourth splicing part, 23 upper chord, 24 lower chord, 25 upper cross beam, 26 lower cross beam, 27 web member, 28 upper anchor box, 29 lower anchor box, 30 diagonal brace, 31 diagonal web member, 32 anchor cross beam, 33 end upper chord, 34 end lower chord member, 35 dense brace, 36 end web member, 37 walking platform, 38 triangular channel steel supporting structure, 39 transverse partition plate, 40 and 41 i-steel.
Detailed Description
The technical solution in an exemplary embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention.
As shown in fig. 1 to 9, the present embodiment provides a self-anchoring tension bed for a pretensioned precast beam. The device comprises a precast beam forming module 1 with a set length, and two pull-anchor modules 2 which are respectively arranged at two ends of the precast beam forming module 1 and detachably connected with the two ends of the precast beam forming module 1, as shown in figures 1 and 3;
the precast beam forming module 1 supports two tensioning anchor modules 2, and each tensioning anchor module 2 is provided with a tensioning mechanism for tensioning a prestressed steel beam 9.
The stretch-draw pedestal of this embodiment is formed by prefabricated beam forming module 1 and the equipment of stretch-draw anchor module 2 to realize the anchor of stretch-draw mechanism through stretch-draw anchor module 2, prefabricated beam forming module 1 is used for supporting stretch-draw anchor module 2 simultaneously, need not set up anti-floating pile, reaction wall and underground even roof beam, and the field only needs simple sclerosis can satisfy the stretch-draw requirement, has overcome the unable defect of turnover of stretch-draw pedestal among the prior art, can carry out equipment transfer and turnover along with the construction needs.
As shown in fig. 1, the precast beam forming module 1 is provided with a counterweight 17, a prestressed steel beam guider 10 and a prestressed steel beam bender 11, and an upward pulling force generated by the turning of the prestressed steel beam 9 at the position of the prestressed steel beam bender 11 is counteracted by the counterweight 17, so that the precast beam forming module 1 is prevented from buckling upwards at the position of the prestressed steel beam bender 11. The positions of the prestressed steel strand guide 10 and the prestressed steel strand bender 11 can be designed according to actual needs. The counterweight 13 and the precast beam forming module 1 are provided with a second distribution beam 18 for equalizing the weight of the counterweight 13.
It can be understood that the length of the precast beam forming module 1 can be adjusted according to actual requirements, and the precast beam forming module can be applied to the manufacture of single beams with different lengths and the simultaneous manufacture of multiple beams, so that the application range of the tensioning pedestal is increased, and two beams are manufactured simultaneously as shown in fig. 2.
Of course, when a long or single-piece beam or multi-piece beam is manufactured, if the precast beam forming module 1 is of an integral structure, the turnover of the tensioning pedestal is not facilitated, and in order to overcome the defect, the precast beam forming module 1 is formed by splicing a plurality of standard sections with set length. It will be appreciated that the lengths of the standard segments may be the same or different or partially the same.
The precast beam forming module 1 is formed by splicing a plurality of standard sections with set lengths, and the sections can be replaced when a certain standard section is damaged, so that local replacement is realized, the defect that the whole precast beam forming module 1 is integrally replaced due to the damage of a certain part is overcome, and the waste of materials is reduced.
It should be noted that when the precast beam is long or multiple beams are precast simultaneously, in order to ensure the stable lateral compression of the tensioning platform, triangular support structures 38 are arranged on two lateral sides of the precast beam forming module, as shown in fig. 9. It will be appreciated that this is only required in a local arrangement.
As shown in fig. 4, in this embodiment, the precast beam forming module 1 is formed by splicing a first standard section 3, a second standard section 4 and a third standard section 5, wherein the first standard section 3 and the third standard section 5 have the same length and are suitable for the working condition of a single-piece beam. In addition, in other embodiments, two sets of the first standard section 3, the second standard section 4 and the third standard section 5 can be arranged to be suitable for the working condition of the two-piece beam.
As shown in fig. 5 and 6, each standard section includes a frame structure, the frame structure is in a shape of a Chinese character kou, a steel bottom mold 13 and side molds arranged on the inner sides of two side portions are arranged on the inner side of the bottom of the frame structure, which are not shown in the figure, and the steel bottom mold 13 and the side molds are used for forming the precast beam and are selected according to actual needs.
The bottom corners and the middle of the frame structure are provided with longitudinally arranged lower chords 24 which are connected through lower cross beams 26, the top corners of the frame structure are provided with longitudinally arranged upper chords 23 which are connected through upper cross beams 25, the upper chords 23 arranged at the bottom corners and the lower chords 24 arranged at the top corners are supported through web members 27, and the upper cross beams 25 are detachably connected with the upper chords 23.
The upper beam 25 and the upper chord 23 are detachably connected, so that templates or other construction equipment can be conveniently hoisted.
Flanges are arranged at the end parts of the upper chord 23 and the lower chord 24, the standard sections are spliced through the flanges, and the joint of the upper chord 23 and the upper cross beam 25 is provided with the flanges and connected through the flanges.
As shown in fig. 6, the upper chord 23 and the lower chord 24 are both formed by welding i-shaped steel 41 and channel steel 40, before welding, a diaphragm 39 is arranged between the i-shaped steel 41 and the channel steel 40, and the diaphragm 39 corresponds to the vertical positions of the upper cross beam 25 and the lower cross beam 36, so that the steel plates outside the upper chord 23 and the lower chord 24 are prevented from being locally bent.
The channel steel 40 is provided with holes in corresponding positions in advance, the diaphragm plate 39 is welded on the I-steel 41, the diaphragm plate 39 extends out of the preformed hole of the channel steel 40, and the vertical plates of the upper cross beam 25 and the lower cross beam 36 are correspondingly shortened and welded with the extending diaphragm plate 39.
And a first distribution beam 12 is arranged between the steel bottom die 23 and the inner side of the bottom of the frame structure, and the first distribution beam 12 is used for uniformly distributing the weight of the precast beam 8.
As shown in fig. 4, each tension-anchoring module 2 comprises an anchoring section 6 and a tension section 7, the tension section 7 is provided with a tension trolley 14, the anchoring section 6 is provided with a jack 15, and the jack 15 and the tension trolley 14 are connected through a steel pull rod 16. The tensioning trolley 14 is prior art, and the detailed structure thereof will not be described herein.
In the present exemplary embodiment, the anchoring sections 6 and the tensioning sections 7 of the tensioning anchor modules 2 likewise have a frame structure, the contour of which is identical to the contour of the frame structure of the standard section. As shown in fig. 7, the top corner of the frame structure of the anchoring section 6 and the tensioning section 7 has an end upper chord 33 and the bottom corner has an end lower chord 34, the anchoring section 6 and the tensioning section 7 share the end upper chord 33 and the end lower chord 34, and the end upper chord 33 and the end lower chord 34 are spliced together with the upper chord 23 and the lower chord 24 arranged at the bottom corner through flanges. The upper end chord 33 and the lower end chord 34 are supported by end web members 36, and the outer ends of the anchor segments 6 are provided with upper anchor boxes 28 and lower anchor boxes 29 for anchoring the jacks 15.
In the present exemplary embodiment, the first standard section 3 is joined to the second standard section 4 at a first joint 19 by a first flange 39, and the third standard section 5 is joined to the second standard section 4 at a second joint 20 by a first flange 39. Similarly, the first standard section 3 and the tension section 7 are spliced together by a flange at a third splicing part 21, and the third standard section 5 and the tension section 7 at the other end are spliced together by a flange at a fourth splicing part 22.
The bottom of the anchoring section 6 is provided with an inclined strut 30, and the outer side of the inclined strut 30 is higher than the inner side. In the present embodiment, the struts 30 are connected with their high sides against the lower anchor boxes 29 and with their low sides against the anchor beams 32. A packing support 35 is arranged at the bottom of the tensioning section 7, and a walking platform 37 is arranged above the packing support 35 and used for the tensioning trolley 14 to move back and forth on the same, as shown in fig. 8.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (10)
1. A pre-tensioning method precast beam self-anchoring type tensioning pedestal is characterized by comprising a precast beam forming module with a set length and two pulling and anchoring modules, wherein the two pulling and anchoring modules are detachably connected with the two ends of the precast beam forming module respectively;
the precast beam forming module supports two tensioning and anchoring modules, each tensioning and anchoring module is provided with a tensioning mechanism for tensioning and anchoring a prestressed steel beam, and the tensioning mechanisms are anchored on the tensioning and anchoring modules.
2. The self-anchoring tensioning pedestal for the pretensioned precast beam of claim 1, wherein the precast beam forming module is installed with a counterweight, a prestressed steel beam guide and a prestressed steel beam bender, and an uplift force generated by the prestressed steel beam turning at the position of the prestressed steel beam bender is offset by the counterweight.
3. A pretensioned precast beam self anchoring tension block as claimed in claim 2, wherein the precast beam forming module is spliced by a plurality of standard segments having a set length.
4. A self-anchoring tensioning pedestal for a pretensioned precast beam according to claim 3, wherein each of the tensioning anchoring modules includes an anchoring section and a tensioning section, the tensioning section is provided with a tensioning trolley, the anchoring section is provided with a jack, and the jack and the tensioning trolley are connected by a steel tie rod.
5. A self-anchoring tensioning pedestal for a pretensioned precast beam according to claim 4, wherein the bottom of the anchoring section is provided with a diagonal brace, and the outer side of the diagonal brace is higher than the inner side of the diagonal brace.
6. The self-anchoring tensioning pedestal for the pretensioned precast beam according to claim 3, wherein each standard section includes a frame structure, the frame structure is in a shape of a Chinese character kou, and a bottom steel mold and side molds are provided on the inner sides of the bottom of the frame structure.
7. The self-anchoring tension pedestal for a pretensioned precast beam according to claim 6, wherein the bottom corners and the middle of the frame structure are provided with the lower chords arranged longitudinally and connected by the lower cross member, the top corners of the frame structure are provided with the upper chords arranged longitudinally and connected by the upper cross member, the upper chords arranged at the bottom corners and the lower chords arranged at the top corners are supported by the web members, and the upper cross member is detachably connected with the upper chords.
8. The self-anchoring tension bed for pretensioned precast beams according to claim 7, wherein a first distribution beam is provided between the steel bottom mold and the inner side of the bottom of the frame structure.
9. A pretensioned precast beam self anchoring tension deck as claimed in claim 8 wherein said standard sections are flanged and said upper chord is flanged to said upper cross beam.
10. A pretensioned precast beam self anchoring tension deck according to any of claims 1 to 9 wherein said precast beam forming modules are provided with triangular support structures at both lateral sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111672560.8A CN114474360B (en) | 2021-12-31 | 2021-12-31 | Pretensioned precast beam self-anchored tensioning pedestal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111672560.8A CN114474360B (en) | 2021-12-31 | 2021-12-31 | Pretensioned precast beam self-anchored tensioning pedestal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114474360A true CN114474360A (en) | 2022-05-13 |
| CN114474360B CN114474360B (en) | 2023-08-29 |
Family
ID=81497138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111672560.8A Active CN114474360B (en) | 2021-12-31 | 2021-12-31 | Pretensioned precast beam self-anchored tensioning pedestal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114474360B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114800854A (en) * | 2022-06-07 | 2022-07-29 | 德州海天机电科技有限公司 | Self-holding load tensioning system for double-row 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 |
| CN115094771A (en) * | 2022-07-14 | 2022-09-23 | 甘肃交设智远实业有限公司 | A light prefabricated self-balancing pretensioning prestressing equipment |
| CN116201035A (en) * | 2023-02-28 | 2023-06-02 | 山东四方路桥集团股份有限公司 | Prestress steel strand steering gear |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195185A (en) * | 2013-04-11 | 2013-07-10 | 北京工业大学 | I-shaped single-plate assembling steel structure prestressed buckling preventing support |
| CN107724241A (en) * | 2017-09-28 | 2018-02-23 | 中铁四局集团有限公司 | Construction method for cable-stayed bridge deck auxiliary structure through counterweight construction |
| CN109676784A (en) * | 2019-01-23 | 2019-04-26 | 四川公路桥梁建设集团有限公司 | Fabricated steel-concrete combined structure pedestal and pre-tensioning T-beam construction method |
| CN112518983A (en) * | 2020-12-11 | 2021-03-19 | 保利长大工程有限公司 | Pre-tensioning method precast beam slab tensioning pedestal structure |
-
2021
- 2021-12-31 CN CN202111672560.8A patent/CN114474360B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195185A (en) * | 2013-04-11 | 2013-07-10 | 北京工业大学 | I-shaped single-plate assembling steel structure prestressed buckling preventing support |
| CN107724241A (en) * | 2017-09-28 | 2018-02-23 | 中铁四局集团有限公司 | Construction method for cable-stayed bridge deck auxiliary structure through counterweight construction |
| CN109676784A (en) * | 2019-01-23 | 2019-04-26 | 四川公路桥梁建设集团有限公司 | Fabricated steel-concrete combined structure pedestal and pre-tensioning T-beam construction method |
| CN112518983A (en) * | 2020-12-11 | 2021-03-19 | 保利长大工程有限公司 | Pre-tensioning method precast beam slab tensioning pedestal structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114800854A (en) * | 2022-06-07 | 2022-07-29 | 德州海天机电科技有限公司 | Self-holding load tensioning system for double-row tensioning steel beam |
| CN114800854B (en) * | 2022-06-07 | 2024-04-05 | 德州海天机电科技有限公司 | Self-holding load tensioning system for double-row 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 |
| CN115094771A (en) * | 2022-07-14 | 2022-09-23 | 甘肃交设智远实业有限公司 | A light prefabricated self-balancing pretensioning prestressing equipment |
| CN116201035A (en) * | 2023-02-28 | 2023-06-02 | 山东四方路桥集团股份有限公司 | Prestress steel strand steering gear |
| CN116201035B (en) * | 2023-02-28 | 2024-01-16 | 山东四方路桥集团股份有限公司 | Prestress steel strand steering gear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114474360B (en) | 2023-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114474360A (en) | Pre-tensioning method precast beam self-anchored tensioning pedestal | |
| CN204662235U (en) | A kind of steel plate combination T beam bridge | |
| CN112458877B (en) | An assembled steel-concrete composite rigid frame bridge and construction method thereof | |
| CN114592440B (en) | Upper structure of assembled steel-concrete combined bridge and construction process thereof | |
| CN112982139A (en) | Wide-width large-span hybrid beam and short-tower cable-stayed bridge system and construction method thereof | |
| CN114790693B (en) | Construction method of large-span river-crossing steel truss bridge structure | |
| CN214459548U (en) | Assembled steel and concrete combined rigid frame bridge | |
| CN115492389B (en) | Construction method of large-section ultrahigh conversion beam | |
| CN109083007B (en) | Steel truss bridge assembly bracket system and construction method | |
| CN114855584B (en) | Construction method based on separated ultra-wide prestressed concrete box girder structure | |
| CN219032946U (en) | Temporary supporting structure for prefabricated small box girder type hidden cover girder | |
| CN213233106U (en) | An arch bracket | |
| CN215829236U (en) | Combined capping beam suitable for continuous bridge deck construction and bridge | |
| CN112502025B (en) | Segment bolted rigid frame bridge and construction method thereof | |
| CN215716028U (en) | Steel beam platform structure for C-shaped stock ground | |
| CN113073541B (en) | A combined cap beam, bridge and construction process suitable for continuous bridge deck structure | |
| CN111172855B (en) | Top-supported longitudinal block prefabricated box girder | |
| CN115717362A (en) | Main beam short steel-concrete joint section structure of railway mixed box girder cable-stayed bridge and construction method thereof | |
| CN113089843A (en) | Steel beam platform structure for C-shaped stock ground | |
| CN111719417A (en) | Fully prefabricated light large cantilever pre-bent composite cover beam structure and construction method | |
| CN220499492U (en) | Adjustable construction pedestal for bridge deck with anchor blocks | |
| CN220661246U (en) | Bottom die and side die combined system of prefabricated box girder and forming system comprising same | |
| CN221255236U (en) | Bridge beam support template system | |
| CN222771343U (en) | A formwork support for cast-in-place bridge deck construction using a trough-shaped composite beam | |
| CN222275777U (en) | A steel-concrete node prefabricated with steel bars and steel sections in a factory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |