CN202450429U - Heat-preserving structure for continuous rigid frame flumes - Google Patents
Heat-preserving structure for continuous rigid frame flumes Download PDFInfo
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- CN202450429U CN202450429U CN2012200253482U CN201220025348U CN202450429U CN 202450429 U CN202450429 U CN 202450429U CN 2012200253482 U CN2012200253482 U CN 2012200253482U CN 201220025348 U CN201220025348 U CN 201220025348U CN 202450429 U CN202450429 U CN 202450429U
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- heat
- rigid frame
- top plate
- continuous rigid
- preserving
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Abstract
The utility model discloses a heat-preserving structure for continuous rigid frame flumes. The heat-preserving structure comprises a box beam top plate of a continuous rigid frame flume, and a heat-preserving plate is arranged on the box beam top plate. Due to the adoption of the technical scheme, the maximum vertical positive temperature difference of the top plate is 5 DEG C, the maximum negative temperature difference of the top plate is 3 DEG C below zero, the vertical gradient temperature of the top plate is greatly lowered, and the force applied to the top plate is greatly reduced. In addition, compared with concrete or bituminous concrete, by using the heat-preserving plate, the dead weight of the heat-preserving structure is greatly reduced, and the heat-preserving structure is safer; and the heat-preserving structure is convenient in construction and high in economical efficiency.
Description
Technical field
The utility model belongs to the water conservancy project building field, particularly a kind of insulation construction of continuous rigid frame aqueduct.
Background technology
Along with developing rapidly of China's hydraulic engineering, the application of large and medium-sized defeated draining continuous rigid frame aqueduct more and more widely.When existing continuous rigid frame aqueduct carried out structural calculation, there was a vertical gradient temperature in its case back plate, and this gradient numerical value is by People's Republic of China's industry standard " highway bridge and culvert design general specification value " (JTG D60-2004) value.Specific as follows: when 1. case back plate adopted concrete pavement, the maximum positive temperature difference was 25 ℃, and the maximum negative temperature difference is-12.5 ℃; When 2. case back plate adopted the 50mm asphalt concrete pavement, the maximum positive temperature difference was 20 ℃, and the maximum negative temperature difference is-10 ℃; When 3. case back plate adopted the 100mm asphalt concrete pavement, the maximum positive temperature difference was 14 ℃, and the maximum negative temperature difference is-7 ℃.This vertical gradient temperature is remarkable to effect on structure; Use the 100mm asphalt concrete pavement to be example with top board; The positive temperature difference will cause the positive compressive stress about the increase 4MPa of top board; The subzero temperature difference will cause positive tensile stress about top board increase-2MPa, and structure also need be born the bituminous concrete weight of 24kN/m simultaneously.If carry out by this structure, not only stressed seriously unfavorable to overall structure, economy is also relatively poor simultaneously.
Summary of the invention
The technical problem that the utility model will solve is: provide a kind of and can reduce vertical gradient temperature, weight reduction improves safety of structure, and easy construction, and the insulation construction of the continuous rigid frame aqueduct of better economy is to overcome the deficiency of prior art.
The utility model is to constitute like this: it comprises the case beam 1 of continuous rigid frame aqueduct, on the top board of case beam 1, is provided with warming plate 2.
In the insulation construction of above-mentioned continuous rigid frame aqueduct, described warming plate 2 is polystyrol plastic foam plates.
In the insulation construction of aforesaid continuous rigid frame aqueduct, the thickness of described warming plate 2 is 5cm.
Owing to adopted technique scheme, compare with prior art, the utility model is on case back plate, to lay warming plate; Make that the vertical maximum positive temperature difference of top board is 5 ℃; The maximum negative temperature difference is-3 ℃, has significantly reduced the vertical gradient temperature of top board, has reduced the stressed of top board.In addition, warming plate has significantly alleviated the weight of self compared to concrete or asphalt concrete pavement, makes structural safety obtain better guarantee.Besides, the utility model easy construction, better economy.
Description of drawings:
Structural representation when Fig. 1 is single hole case beam for the case beam of the utility model;
Structural representation when Fig. 2 is diplopore case beam for the case beam of the utility model.
Being labeled as of accompanying drawing: 1-case beam, 2-warming plate.
The specific embodiment:
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
The embodiment of
the utility model: the structure of the utility model is as shown in Figure 1; It comprises the case beam 1 of existing continuous rigid frame aqueduct, on the top board of case beam 1, lays warming plate 2 (warming plate 2 is to adopt existing commercially available adiabator plate laterally or vertically to lay).In order further to alleviate own wt, described warming plate 2 can adopt existing commercially available polystyrol plastic foam plate, and its weight is merely 2.5kN/m, is 10.4% of 100mm asphalt concrete pavement weight.For at the vertical gradient temperature that guarantees to reduce top board, when reducing the stressed effect of top board, save the cost of mating formation, further improve economy, can the thickness of described warming plate 2 be made as 5cm.
Claims (3)
1. the insulation construction of a continuous rigid frame aqueduct is characterized in that: comprise the case beam (1) of continuous rigid frame aqueduct, on the top board of case beam (1), be provided with warming plate (2).
2. the insulation construction of continuous rigid frame aqueduct according to claim 1 is characterized in that: described warming plate (2) is a polystyrol plastic foam plate.
3. the insulation construction of continuous rigid frame aqueduct according to claim 1 is characterized in that: the thickness of described warming plate (2) is 5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200253482U CN202450429U (en) | 2012-01-19 | 2012-01-19 | Heat-preserving structure for continuous rigid frame flumes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200253482U CN202450429U (en) | 2012-01-19 | 2012-01-19 | Heat-preserving structure for continuous rigid frame flumes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202450429U true CN202450429U (en) | 2012-09-26 |
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ID=46866301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200253482U Expired - Lifetime CN202450429U (en) | 2012-01-19 | 2012-01-19 | Heat-preserving structure for continuous rigid frame flumes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202450429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317001A (en) * | 2015-05-08 | 2016-02-10 | 贵州省水利水电勘测设计研究院 | Variable box variable cross section continuous rigid frame aqueduct single-box single-chamber box girder and design method thereof |
-
2012
- 2012-01-19 CN CN2012200253482U patent/CN202450429U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317001A (en) * | 2015-05-08 | 2016-02-10 | 贵州省水利水电勘测设计研究院 | Variable box variable cross section continuous rigid frame aqueduct single-box single-chamber box girder and design method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |