CN2245627Y - Fibre polymer prestressed concrete manhole cover - Google Patents
Fibre polymer prestressed concrete manhole cover Download PDFInfo
- Publication number
- CN2245627Y CN2245627Y CN 94235538 CN94235538U CN2245627Y CN 2245627 Y CN2245627 Y CN 2245627Y CN 94235538 CN94235538 CN 94235538 CN 94235538 U CN94235538 U CN 94235538U CN 2245627 Y CN2245627 Y CN 2245627Y
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- China
- Prior art keywords
- manhole cover
- well lid
- model
- utility
- concrete
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a manhole cover for a manhole of an urban underground pipeline, composed of fiber polymer concrete, a ferrule and stress bars. A pre-stress reinforced concrete structure is formed by the stress bars, the fiber polymer concrete and the ferrule together. The manhole cover has reasonable structure, high intensity, low cost, theft protection and easy and convenient production process; the utility model can have the same size as the existing kindred cast iron manhole cover, and can directly replace the existing cast iron manhole cover; the utility model can be used for the manhole of the underground pipe of sewage, rain, telecommunication, etc., and the utility model is particularly suitable for the supplement of lost cast iron manhole covers.
Description
The utility model relates to a kind of well lid that is used for the urban Underground pipeline manhole.
The employed well lid of underground pipeline manhole in city mostly is a casting iron well lid at present.The major defect of this well lid is a complex process, and the cost height is stolen easily, and injury accident takes place often, causes damage to people's lives and properties.Now also part is used concrete manhole cover, solving the problem that casting iron well lid exists, but the major defect of this class well lid, the one, thickness is big, heaviness; The 2nd, intensity is low, damages easily; The 3rd, the well lid size can not be lost if casting iron well lid takes place with now cylinder iron the well seat is supporting, can not use existing concrete well lid polishing, if just must dig out replacing together with cast iron well seat with the concrete manhole cover replacement, causes very big waste economically.
The purpose of this utility model, a kind of new pattern manhole cover that designs for the above-mentioned shortcoming that overcomes the existence of casting iron well lid and all kinds of concrete manhole cover exactly.This be a kind of be the well lid of main material with the concrete, cost is low; Antitheft; The intensity height, not fragile; And size can directly substitute the casting iron well lid that uses at present, and needn't change the well seat with now cylinder iron well lid is measure-alike.
The purpose of this utility model be achieved in that one be in ordinary concrete, add fiber, special copolymer obtains a kind of high-intensity fiber polymer concrete, has improved the mechanical property such as bending resistance, cracking resistance, shock resistance of ordinary concrete.The 2nd, add a cranse at the outward flange of well lid, increased the intensity at well lid edge, prevent from that vehicle from rolling to cause the well lid edge breakage, can make the well lid concrete structure have the loading characteristic of arch-type structure again, bearing capacity is improved.Also can exempt the program of concrete demoulding, manufacture craft is simplified.The 3rd, prefabricated eye is arranged on the cranse wall, after the pre-stretch-draw of the principal rod in the well lid concrete, just can obtain prestressed concrete, the utilization rate that has improved material has greatly increased well lid intensity.
The utlity model has following advantage: the one, cost is low, and because of main material is a concrete, the comparable similar specification casting iron well lid cost of its cost reduces half.The 2nd, antitheft, because of concrete is not recycled value.The 3rd, can directly replace existing cylinder iron well lid with now cylinder iron well lid is measure-alike, easy to use, the 4th, owing to adopted fiber, polymer to strengthen, and realized prestressed concrete, so well lid intensity height reaches the technical requirements of same size casting iron well lid.The 5th, manufacture craft is easy, and materials are economized, and are easy to utilize.
Enforcement of the present utility model can further specify in conjunction with the accompanying drawings
Accompanying drawing 1 is a sectional view of the present utility model
Accompanying drawing 2 is vertical views of the present utility model
Fibre-forming polymer concrete 1, mainly by cement, thick, fines, fiber, polymer are formed, and cement adopts high-mark cement, and the maximum particle diameter of coarse aggregate can be selected according to the thickness of well lid.Polymer can be selected the water-soluble or water and milk polymer of organic or inorganic for use, and fiber can be selected steel fibre, glass fiber, chemical fibre etc. for use.With cement, water, coarse-fine aggregate, polymer, fiber, other auxiliary agent, mix by a certain percentage, for example, cement 525# Portland cement, limestone stone, river sand, water/binder ratio 0.3, polymer are water-soluble poval, volume is a solid content 2%, and fiber is a steel fibre, volume volume 1.5%, other auxiliary agents, as, the MF high efficiency water reducing agent.Cranse 2 can be by cast iron, glass fiber reinforced plastic, and the polymer concrete material is manufactured, and the thickness of cranse can change according to the degree of depth and the instructions for use of well seat, and the cranse wall has certain inclination angle (0--20 °).Eye 4 is arranged on the cranse wall, and (more than 4) have two L type circular holes 5 on the cranse upper surface, and the switch well lid is convenient during for use.Principal rod 3, adopt reinforcing bar, the kind of reinforcing bar, diameter can be selected according to the specific requirement of well lid intensity, for example cold drawn wire, indented wire, prestressed reinforcements etc. adopt pre-tensioning system that steel are carried out prestretched, when the well lid concrete strength reaches the set quota, reinforcing bar is cut off, just obtained prestressed reinforced concrete.Arrangement of reinforcement adopts square grid shape, rebar spacing 50--150mm.
Concrete preparation method: earlier reinforcing bar is put into cranse, reinforcing bar is carried out pre-stretch-draw.With cement, coarse-fine aggregate mixes stirring, fiber is added fully stir again; Add entry again, polymer after other auxiliary agents stir, injects mixture in the cranse, vibrates then, routinely prestressed concrete maintenance process maintenance.
Claims (2)
1. a underground pipeline manhole well lid is characterized in that making with the fibre-forming polymer concrete material, and inside is furnished with reinforcing bar, and external margin is added with cranse.
2. well lid according to claim 1 is characterized in that: the thickness of cranse can change according to the degree of depth and the instructions for use of well seat, between 10mm--40mm; The cranse wall has certain inclination angle .0--20 °; Eye is arranged more than 4 on the cranse wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94235538 CN2245627Y (en) | 1994-10-17 | 1994-10-17 | Fibre polymer prestressed concrete manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94235538 CN2245627Y (en) | 1994-10-17 | 1994-10-17 | Fibre polymer prestressed concrete manhole cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2245627Y true CN2245627Y (en) | 1997-01-22 |
Family
ID=33843772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94235538 Expired - Fee Related CN2245627Y (en) | 1994-10-17 | 1994-10-17 | Fibre polymer prestressed concrete manhole cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2245627Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114933450A (en) * | 2022-05-16 | 2022-08-23 | 苏州市兴邦化学建材有限公司 | Emulsion polymer reinforced high-performance concrete well cover and preparation method thereof |
-
1994
- 1994-10-17 CN CN 94235538 patent/CN2245627Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114933450A (en) * | 2022-05-16 | 2022-08-23 | 苏州市兴邦化学建材有限公司 | Emulsion polymer reinforced high-performance concrete well cover and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |