CN202448217U - Closed steam-cured system of segment box girder - Google Patents
Closed steam-cured system of segment box girder Download PDFInfo
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- CN202448217U CN202448217U CN2012200879585U CN201220087958U CN202448217U CN 202448217 U CN202448217 U CN 202448217U CN 2012200879585 U CN2012200879585 U CN 2012200879585U CN 201220087958 U CN201220087958 U CN 201220087958U CN 202448217 U CN202448217 U CN 202448217U
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Abstract
The utility model discloses a closed steam-cured system of a segment box girder. The system comprises a closed steam-cured shed and a plurality of steam-cured pipelines, wherein the closed steam-cured shed covers the outside of a segment box girder to be cured, the plurality of steam-cured pipelines are laid inside the closed steam-cured shed, the steam-cured pipelines and the segment box girder to be cured are horizontally laid, the plurality of steam-cured pipelines comprise a plurality of bottom pipelines, a plurality of left side pipelines, a plurality of right side pipelines and a plurality of box-in pipelines, the plurality of bottom pipelines are sequentially laid under the bottom of the segment box girder to be cured from left to right, the plurality of left side pipelines and the plurality of right side pipelines are respectively sequentially laid on the left side of the segment box girder to be cured and the right side of the segment box girder to be cured from top to bottom, and the plurality of box-in pipelines are laid sequentially in the segment box girder to be cured from left to right. The system is simple in structure, reasonable in design, convenient to assemble, use and operate, good in usage effect and capable of solving various problems which exist during a box girder concrete curing period under the condition of extreme climate such as dryness, heavy wind and large temperature difference.
Description
Technical field
The utility model belongs to the beam prefabricated technical field of case, especially relates to a kind of section box girder and seals steam-cured system.
Background technology
Nowadays at present; The wet seam construction technology of the section assembling of section assembling bridge manufacturing machine is following: at first; Carry out precast beam section transportation lifting contraposition, the precast beam section is transported to the afterbody of bridge fabrication machine by beam car from beam section precasting yard, through the bridge fabrication machine straddle truck with the handling of beam section to the installation site; The position of adjustment precast beam section three-dimensional makes it reach the linear of design.In the adjustment of beam section; The most important thing is the measurement control of initial sections; It is whole starting point of striding beam, is directly controlling wholely to stride the linear of beam, so initial sections will accurately be located on mileage, axis, 3 directions of elevation; And it directly is supported on the permanent bearing, follow-up beam Duan Jun adjusts as standard.Afterwards; The construction of the joint concrete that wets; Comprise wet seam laid reinforcement binding, prestressing force bellows in the location of wet seam crossing, the installation and the concrete cast of wet seam template, carry out stretch-draw mud jacking and sealing off and covering anchorage work at last, so far accomplish the assembly unit work of a hole case beam.
The high 46.5m of maximum pier of the newly-built Lan-xing Railway second two-wire (Xinjiang section) LXTJ1 mark DK1123+907 red building river grand bridge (L=1651.19m), superstructure is 33 hole 48m prestressed concrete two-wire simple supported box beams, adopts the section assembling technology to construct.The 48m prestressed concrete two-wire simple supported box beam that is adopted is assemblied to form by 11 box girder segments continuously.During practice of construction, the heaviest sections weight 150t in 11 box girder segments that adopted, whole opening box girder weight 1800t, the case depth of beam is that 4.6m and its bridge floor transverse width are 12.2m, thereby case beam section area is bigger, belongs to large-tonnage, heavy in section case beam.Simultaneously; Because this bridge is located in the cigarette pier II level wind district in severe cold Gobi desert, Xinjiang; This area with dry, rainfall is little, ice period is long, day and night temperature is big, spring and autumn is windy, summer is very brief and hot, winter is very long and severe cold is its principal character; Annual average wind speed 4.5m/s, maximum timing wind speed 19.8m/s, extreme wind speed 25.8m/s year after year year after year.Strong wind takes place frequently under the weather, the box girder pre-stressed concrete two-wire of the 48m simple supported box beam that with the construction speed index in 12.5 days/hole 11 box girder segments is assembled into 1800t weight in the high-altitude of the nearly 52m of operation maximum height, and security risk is high, and difficulty of construction is very big.
During practice of construction; Under this extreme weather conditions of Gobi desert, Xinjiang area drying, strong wind, the big temperature difference, each box girder segment is carried out when prefabricated, concrete is difficult to obtain from the external world moisture between preserving period additional; Outwards scatter and disappear and its internal water branch is a large amount of; Make hydrated cementitious insufficient, quickened contraction distortions such as plastic shrinkage that concrete takes place in construction stage and after-hardening stage, self-constriction, dry contraction, thereby caused the early stage poor stability of concrete; Cracking occurs, so the beam prefabricated quality of case is difficult to obtain assurance.
The utility model content
The utility model technical problem to be solved is to above-mentioned deficiency of the prior art; Provide a kind of section box girder to seal steam-cured system; It is simple in structure, reasonable in design, set up convenient and it is easy and simple to handle to use, result of use good, can solve effectively that the contraction distortion that exists during the extreme weather conditions nowel beam concrete curings such as drying, strong wind, the big temperature difference is serious, the early stage poor stability of concrete, be prone to cracking, the beam prefabricated quality of case is difficult to obtain multiple practical problems such as assurance.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of section box girder seals steam-cured system; It is characterized in that: comprise cover be contained in by the closed maintenance canopy in the maintenance section box girder outside be laid in many steam-cured pipelines in the said closed maintenance canopy; Many said steam-cured pipelines all with by the maintenance section box girder are parallel laying, and many said steam-cured pipelines all join with steam feed equipment; Many said steam-cured pipelines comprise bottom pipe, left side pipeline, right side pipeline and case interior conduit; The quantity of said bottom pipe, left side pipeline, right side pipeline and case interior conduit is many; Many said bottom pipe are laid in by below, the bottom of maintenance section box girder from left to right successively; Many said left side pipelines from top to bottom are laid in by the left side of maintenance section box girder successively; Many said right side pipelines from top to bottom are laid in successively and are symmetry by the right side of maintenance section box girder and many said right side pipelines and many said left side pipelines and lay, and many said case interior conduits are laid in by in the case of maintenance section box girder from left to right successively.
Above-mentioned section box girder seals steam-cured system, it is characterized in that: said closed maintenance canopy is for to set up the airtight canopy body that forms by the polylith color steel.
Above-mentioned section box girder seals steam-cured system, it is characterized in that: the quantity of said bottom pipe is four, and the quantity of said left side pipeline and right side pipeline is three, and the quantity of said case interior conduit is two.
Above-mentioned section box girder seals steam-cured system, it is characterized in that: be provided with a plurality of support frames that respectively the said color steel of polylith carried out support fixation in the said airtight canopy body.
Above-mentioned section box girder seals steam-cured system, it is characterized in that: the bracing frame of said support frame for being assemblied to form by a plurality of supporting rods.
Above-mentioned section box girder seals steam-cured system, it is characterized in that: said bottom pipe, left side pipeline, right side pipeline and case interior conduit are circular pipe.
The utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design, set up convenient and input cost low.
2, use is easy and simple to handle, result of use good; For a freestanding airtight maintenance space is provided by the maintenance section box girder; The prefabricated quality of pre-formed section box girder can effectively be guaranteed, can solve effectively that the contraction distortion that exists during the extreme weather conditions nowel beam concrete curings such as drying, strong wind, the big temperature difference is serious, the early stage poor stability of concrete, be prone to cracking, the beam prefabricated quality of case is difficult to obtain multiple practical problems such as assurance.
To sum up, the utility model is simple in structure, reasonable in design, set up convenient and it is easy and simple to handle to use, result of use good, can effectively solve the multiple practical problem that exists during the extreme weather conditions nowel beam concrete curings such as drying, strong wind, the big temperature difference.
Through accompanying drawing and embodiment, the technical scheme of the utility model is done further detailed description below.
Description of drawings
Fig. 1 is the user mode reference diagram of the utility model.
Description of reference numerals:
1-by the maintenance section box girder; 2-bottom pipe; 3-left side pipeline;
4-right side pipeline; 5-case interior conduit; 6-color steel;
7-support frame.
The specific embodiment
As shown in Figure 1; The utility model comprise cover be contained in by the closed maintenance canopy on the maintenance section box girder 1 be laid in many steam-cured pipelines in the said closed maintenance canopy; Many said steam-cured pipelines all with by maintenance section box girder 1 are parallel laying, and many said steam-cured pipelines all join with steam feed equipment.Many said steam-cured pipelines comprise bottom pipe 2, left side pipeline 3, right side pipeline 4 and case interior conduit 5; The quantity of said bottom pipe 2, left side pipeline 3, right side pipeline 4 and case interior conduit 5 is many; Many said bottom pipe 2 are laid in by below, the bottom of maintenance section box girder 1 from left to right successively; Many said left side pipelines 3 from top to bottom are laid in by the left side of maintenance section box girder 1 successively; Many said right side pipelines 4 from top to bottom are laid in successively by the right side of maintenance section box girder 1 and many said right side pipelines 4 and are the symmetry laying with many said left side pipelines 3, and many said case interior conduits 5 are laid in by in the case of maintenance section box girder 1 from left to right successively.
In the present embodiment, said closed maintenance canopy is for to set up the airtight canopy body that forms by polylith color steel 6.
Simultaneously, be provided with a plurality of support frames 7 that respectively the said color steel 6 of polylith carried out support fixation in the said airtight canopy body.In the present embodiment, the bracing frame of said support frame 7 for being assemblied to form by a plurality of supporting rods.
In the present embodiment, the quantity of said bottom pipe 2 is four, and the quantity of said left side pipeline 3 and right side pipeline 4 is three, and the quantity of said case interior conduit 5 is two.In the actual use, can be according to concrete needs, the quantity of bottom pipe 2, left side pipeline 3, right side pipeline 4 and case interior conduit 5 is adjusted accordingly.
In the present embodiment, said bottom pipe 2, left side pipeline 3, right side pipeline 4 and case interior conduit 5 are circular pipe.
The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any restriction; Everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of the utility model technical scheme according to the utility model technical spirit.
Claims (6)
1. a section box girder seals steam-cured system; It is characterized in that: comprise that cover is contained in by closed maintenance canopy on the maintenance section box girder (1) and many steam-cured pipelines that are laid in the said closed maintenance canopy; Many said steam-cured pipelines all with by maintenance section box girder (1) are parallel laying, and many said steam-cured pipelines all join with steam feed equipment; Many said steam-cured pipelines comprise bottom pipe (2), left side pipeline (3), right side pipeline (4) and case interior conduit (5); The quantity of said bottom pipe (2), left side pipeline (3), right side pipeline (4) and case interior conduit (5) is many; Many said bottom pipe (2) are laid in by below, the bottom of maintenance section box girder (1) from left to right successively; Many said left side pipelines (3) from top to bottom are laid in by the left side of maintenance section box girder (1) successively; Many said right side pipelines (4) from top to bottom are laid in successively by the right side of maintenance section box girder (1) and many said right side pipelines (4) and are the symmetry laying with many said left side pipelines (3), and many said case interior conduits (5) are laid in by in the case of maintenance section box girder (1) from left to right successively.
2. seal steam-cured system according to the described section box girder of claim 1, it is characterized in that: said closed maintenance canopy is for to set up the airtight canopy body that forms by polylith color steel (6).
3. seal steam-cured system according to claim 1 or 2 described section box girders, it is characterized in that: the quantity of said bottom pipe (2) is four, and the quantity of said left side pipeline (3) and right side pipeline (4) is three, and the quantity of said case interior conduit (5) is two.
4. seal steam-cured system according to the described section box girder of claim 2, it is characterized in that: be provided with a plurality of support frames (7) that respectively the said color steel of polylith (6) carried out support fixation in the said airtight canopy body.
5. seal steam-cured system according to the described section box girder of claim 4, it is characterized in that: the bracing frame of said support frame (7) for being assemblied to form by a plurality of supporting rods.
6. seal steam-cured system according to claim 1 or 2 described section box girders, it is characterized in that: said bottom pipe (2), left side pipeline (3), right side pipeline (4) and case interior conduit (5) are circular pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200879585U CN202448217U (en) | 2012-03-11 | 2012-03-11 | Closed steam-cured system of segment box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200879585U CN202448217U (en) | 2012-03-11 | 2012-03-11 | Closed steam-cured system of segment box girder |
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| Publication Number | Publication Date |
|---|---|
| CN202448217U true CN202448217U (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200879585U Expired - Fee Related CN202448217U (en) | 2012-03-11 | 2012-03-11 | Closed steam-cured system of segment box girder |
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| CN (1) | CN202448217U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106381811A (en) * | 2016-09-18 | 2017-02-08 | 青岛林川工程技术咨询有限公司 | Equipment for insulating and curing pier column concrete in low-temperature seasons |
-
2012
- 2012-03-11 CN CN2012200879585U patent/CN202448217U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106381811A (en) * | 2016-09-18 | 2017-02-08 | 青岛林川工程技术咨询有限公司 | Equipment for insulating and curing pier column concrete in low-temperature seasons |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20160311 |