CN203373666U - Bracket pull-counter loading prepressing device - Google Patents
Bracket pull-counter loading prepressing device Download PDFInfo
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- CN203373666U CN203373666U CN201320415255.5U CN201320415255U CN203373666U CN 203373666 U CN203373666 U CN 203373666U CN 201320415255 U CN201320415255 U CN 201320415255U CN 203373666 U CN203373666 U CN 203373666U
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- anchor system
- stretch
- carriage
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- iron
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Abstract
The utility model discloses a bracket pull-counter loading prepressing device and belongs to the technical field of bridges. The bracket pull-counter loading prepressing device is composed of an upper anchor system placed on a bracket, a lower anchor system located below the upper anchor system, steel strands connecting the upper anchor system and the lower anchor system, and tensioning jacks. The upper anchor system is composed of a plurality of distribution cross beams placed on the top of the bracket, at least two reinforcing longitudinal beams placed on the top of the distribution cross beams, a reinforcing cross beam placed on the top of the reinforcing longitudinal beams, and the tensioning jacks mounted on the top face of the reinforcing cross beam at the junction of the reinforcing cross beam and the reinforcing longitudinal beams. The lower anchor system is composed of a plurality of sets of connecting columns, double-I-shaped steel beams connecting the steel strands and the connecting columns, and anchor base plates. The other ends of the steel strands are fixed on the tensioning jacks. The bracket pull-counter loading prepressing device and a tensioning prepressing method thereof are quick, effective and practical.
Description
Technical field
The utility model belongs to the bridge technology field.
Background technology
The general employing of prestressed concrete continuous beam construction set up the full hall scaffold formwork erection or adopted the Hanging Basket cantilever grouting.When bridge pier is higher or bridge under can only adopt the construction of Hanging Basket cantilever pouring can't set up scaffold the time.The cradle construction prerequisite is the complete 0# sections of must constructing on bridge pier, and the 0# segmental construction is generally by push up pre-buried built-in fitting at pier, and the load that installation bracket is born 0# sections cantilever segment provides working space simultaneously.
Carriage and Hanging Basket need carry out precompressed to carriage and Hanging Basket before formally enabling after setting up, to detect safety, elastic deformation and the nonelastic deformation of carriage and Hanging Basket.Conventional carriage precompressed is piling prepressing, the preloading material commonly uses that concrete precast block, steel, water tank add water, water bag adds water, gunnysack sand loading etc., in the piling prepressing process, need to be transported a large amount of pre-briquettings (or steel), lifting, unloaded operation, workload is larger, expense is high, and the time is long.
The utility model content
The purpose of this utility model is: propose counter the drawing of a kind of quick, effective, applicable carriage and load prepressing device and stretch-draw preloading method thereof.
The utility model purpose realizes by following technical proposals:
The anti-loading prepressing device that draws of a kind of carriage, by the upper anchor system be positioned on carriage, be positioned at the lower anchor system of described upper anchor system below, connect described on, the steel wire bundle of lower anchor system and stretch-draw jack form, described lower anchor system is anchored end, upper anchor system is stretching end, described upper anchor system distributes crossbeam by some that place at described carriage top, the at least two reinforcement longerons of placing at described distribution crossbeam top, a web beam of placing at described reinforcement longeron top, and the described stretch-draw jack that is arranged on described web beam and reinforcement longeron intersection web beam end face forms, described lower anchor system by being embedded in cushion cap, every 2 some groups of joint pins that are a group, the Two bors d's oeuveres steel I-beam that connects described steel wire bundle and each group joint pin, and this steel wire bundle one end is fixed in to the anchor plate composition on described Two bors d's oeuveres steel I-beam, the described steel wire bundle other end is fixed on described stretch-draw jack.
As optimal way, described joint pin is 8 Ф 32mm fining twisted steels, described Two bors d's oeuveres steel I-beam is I 40c i iron, described distribution crossbeam is 10 I 32b i iron, 4 spacings of wherein said stretch-draw jack stretch-draw place are that 20cm equidistantly places, all the other spacings are that 60cm equidistantly places, and described reinforcement longeron is 2 I 40c i iron, and described web beam is I 32b i iron.
The beneficial effects of the utility model: adopt the utility model to carry out the stretch-draw precompressed to carriage, can greatly save the carriage squeeze time, reduce security risk, reduce labour intensity, save the precompressed cost, tensioning equipment can reuse.
The accompanying drawing explanation
Fig. 1 is the front elevation view of the utility model embodiment;
Fig. 2 is the upper anchor system plan view of the utility model embodiment;
Fig. 3 is the upper anchor system side elevational view of the utility model embodiment;
Fig. 4 is the upper anchor system front elevation view of the utility model embodiment;
Fig. 5 is the fining twisted steel plane of arrangement figure of the system of casting anchor of the utility model embodiment;
Wherein 1 is that carriage, 2 is that steel wire bundle, 3 is that stretch-draw jack, 4 is that distribution crossbeam, 5 is that reinforcement longeron, 6 is that web beam, 7 is that cushion cap, 8 is that Two bors d's oeuveres steel I-beam, 9 is that anchor plate, 10 is that fining twisted steel, 11 is that bridge pier, 101 is that upper girder, 102 is that lower girder, 103 is horizontal diagonal brace.
The specific embodiment
Following non-limiting examples is for illustrating the utility model.
As shown in Fig. 1 to 5, the anti-loading prepressing device that draws of a kind of carriage, by the upper anchor system be positioned on carriage 1, be positioned at the lower anchor system of anchor system below, in connection, the steel wire bundle 2 of lower anchor system and stretch-draw jack 3 form, lower anchor system is anchored end, upper anchor system is stretching end, upper anchor system distributes crossbeam 4 by some that place at carriage 1 top, at at least two reinforcement longerons 5 that distribute crossbeam 4 tops to place, at a web beam 6 of strengthening longeron 5 tops placements, and the stretch-draw jack 3 that is arranged on web beam 6 and reinforcement longeron 5 intersection web beam 6 end faces forms, lower anchor system by being embedded in cushion cap 7, every 2 some groups of joint pins that are a group, the Two bors d's oeuveres steel I-beam 8 that connects steel wire bundle 2 and each group joint pin, and these steel wire bundle 2 one ends are fixed in to anchor plate 9 compositions on Two bors d's oeuveres steel I-beam 8, steel wire bundle 2 other ends are fixed on stretch-draw jack 3.As optimal way, as shown in this embodiment, joint pin is 8 Ф 32mm fining twisted steels 10, Two bors d's oeuveres steel I-beam 8 is I 40c i iron, distributing crossbeam 4 is 10 I 32b i iron, and wherein 4 spacings of stretch-draw jack 3 stretch-draw place are that 20cm equidistantly places, and all the other spacings are that 60cm equidistantly places, strengthening longeron 5 is 2 I 40c i iron, and web beam 6 is I 32b i iron.
The anti-stretch-draw preloading method that loads prepressing device that draws of aforementioned bracket is comprised of following steps:
The first step, before building bridge pier 11 cushion cap 7 concrete, the projected position according to jack on cushion cap, at pre-buried 8 of the interior big or small mileage end of cushion cap 7 (totally 4 groups, every 2 is 1 group) fining twisted steel 10, is then built bridge pier 11 cushion cap 7 concrete.
Second step, bridge pier 11 is built while pushing up to pier, at the pre-buried reinforcement steel plate of the big or small mileage end of bridge pier 11, the reserved fining twisted steel preformed hole that crosses.
The 3rd step is put on fining twisted steel in bridge pier 11 pier top preformed holes, and carriage 1 is mounted to the preformed hole position by Pin, after carriage 1 installs, by Pin, carriage 1 fining twisted steel symmetry is carried out to stretch-draw anchor.
The 4th step, after carriage 1 anchoring, every two Pin carriages Shang Xia 1 21,22 levels of girder welding diagonal braces 23 carriage 1 is welded and fixed, make carriage 1 form whole (carriage 1 mainly is comprised of upper and lower girder 101,102 and horizontal diagonal brace 103).
The 5th step, at carriage 1 top, equidistantly (spacing is 60cm) lays 6 distribution crossbeam 4(I 32b i iron), 4, jack tension place distributes crossbeam 4 to encrypt (spacing is 20cm), then distributing crossbeam 4 jack tension places, top to lay two reinforcement longeron 5(I 40c i iron), then at two reinforcement longeron 5 jack tension places, top, lay a web beam 6(I 32b i iron).
The 6th step, by Two bors d's oeuveres steel I-beam 8(I 40c i iron) be arranged on the pre-buried fining twisted steel 10 of cushion cap, before anchoring, fining twisted steel 10 need carry out stretch-draw.
The 7th step, at ground well cutting steel wire bundle, by steel wire bundle one end handling, to the stretch-draw jack place, the steel wire bundle other end is anchored in Two bors d's oeuveres steel I-beam bottom by anchor plate.
The 8th step, stretch-draw jack 3 is seated to web beam 6(I 32b i iron) top stretch-draw place (on web beam 6 and reinforcement longeron 5 intersections), grading tension is carried out through stretch-draw jack 3 in steel wire bundle 2 upper ends, and during stretch-draw, every bridge pier size mileage side is carried out simultaneously.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. the anti-loading prepressing device that draws of carriage, it is characterized in that: by the upper anchor system be positioned on carriage, be positioned at the lower anchor system of described upper anchor system below, connect described on, the steel wire bundle of lower anchor system and stretch-draw jack form, described lower anchor system is anchored end, upper anchor system is stretching end, described upper anchor system distributes crossbeam by some that place at described carriage top, the at least two reinforcement longerons of placing at described distribution crossbeam top, a web beam of placing at described reinforcement longeron top, and the described stretch-draw jack that is arranged on described web beam and reinforcement longeron intersection web beam end face forms, described lower anchor system by being embedded in cushion cap, every 2 some groups of joint pins that are a group, the Two bors d's oeuveres steel I-beam that connects described steel wire bundle and each group joint pin, and this steel wire bundle one end is fixed in to the anchor plate composition on described Two bors d's oeuveres steel I-beam, the described steel wire bundle other end is fixed on described stretch-draw jack.
2. the anti-loading prepressing device that draws of carriage as claimed in claim 1, it is characterized in that: described joint pin is 8 Ф 32mm fining twisted steels, described Two bors d's oeuveres steel I-beam is I 40c i iron, described distribution crossbeam is 10 I 32b i iron, 4 spacings of wherein said stretch-draw jack stretch-draw place are that 20cm equidistantly places, all the other spacings are that 60cm equidistantly places, and described reinforcement longeron is 2 I 40c i iron, and described web beam is I 32b i iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320415255.5U CN203373666U (en) | 2013-07-12 | 2013-07-12 | Bracket pull-counter loading prepressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320415255.5U CN203373666U (en) | 2013-07-12 | 2013-07-12 | Bracket pull-counter loading prepressing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203373666U true CN203373666U (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320415255.5U Expired - Lifetime CN203373666U (en) | 2013-07-12 | 2013-07-12 | Bracket pull-counter loading prepressing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203373666U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352429A (en) * | 2013-07-12 | 2013-10-16 | 中铁八局集团有限公司 | Bracket counter pull loading pre-pressing device and tensioning pre-pressing method thereof |
| CN104328738A (en) * | 2014-10-29 | 2015-02-04 | 中铁建大桥工程局集团第五工程有限公司 | Continuous steel structure construction method for bridge building |
| CN115030158A (en) * | 2022-05-27 | 2022-09-09 | 中铁第六勘察设计院集团有限公司 | Assembly type device for lifting large-diameter cast-in-place pile and green construction method |
-
2013
- 2013-07-12 CN CN201320415255.5U patent/CN203373666U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352429A (en) * | 2013-07-12 | 2013-10-16 | 中铁八局集团有限公司 | Bracket counter pull loading pre-pressing device and tensioning pre-pressing method thereof |
| CN103352429B (en) * | 2013-07-12 | 2015-09-09 | 中铁八局集团有限公司 | Bracket reverse drawing loads the stretch-draw preloading method of prepressing device |
| CN104328738A (en) * | 2014-10-29 | 2015-02-04 | 中铁建大桥工程局集团第五工程有限公司 | Continuous steel structure construction method for bridge building |
| CN115030158A (en) * | 2022-05-27 | 2022-09-09 | 中铁第六勘察设计院集团有限公司 | Assembly type device for lifting large-diameter cast-in-place pile and green construction method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |
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| CX01 | Expiry of patent term |