CN201817780U - Steel bow slope for box culvert jacking - Google Patents
Steel bow slope for box culvert jacking Download PDFInfo
- Publication number
- CN201817780U CN201817780U CN201020506116XU CN201020506116U CN201817780U CN 201817780 U CN201817780 U CN 201817780U CN 201020506116X U CN201020506116X U CN 201020506116XU CN 201020506116 U CN201020506116 U CN 201020506116U CN 201817780 U CN201817780 U CN 201817780U
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- box culvert
- steel plate
- jacking
- slope
- steel
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Abstract
The utility model discloses a steel bow slope for box culvert jacking, which belongs to the technical field of construction of box culvert jacking. The technical scheme includes that the steel bow slope comprises a bottom steel plate (1), a front steel plate (4), at least one bottom anchoring bar (2) and front prefabricated bars (3), wherein the bottom steel plate (1) is provided with a linear section and an arc section bending upwards, the front steel plate (4) is arranged at the front end of the bottom steel plate (1) and fixedly connected with the front end of the bottom steel plate (1), the bottom anchoring bars (2) which are used for being fixed with the bottom of a base board of a box culvert is fixedly arranged on the bottom steel plate (1), and the front prefabricated bars (3) which are used for being fixed with a front edge of the base board of the culvert box are fixedly arranged on the front steel plate (4). The steel bow slope for box culvert jacking is simple in structure and easy to process, and capable of effectively solving the technical problem that the box culvert is plunged into the ground during jacking construction.
Description
Technical field
The utility model relates to the box culvert Construction Technology of With standing Operation, is mainly used in to prevent in the box culvert jacking construction that box culvert from bowing.
Background technology
The box culvert jacking is widely used in all kinds of engineerings such as railway, highway, municipal administration.In the box culvert jack-in process, can bowing phenomena appear usually because of ground, the place ahead soil body active force or the base plate quality of box culvert own, and be commonly called as " pricking head ", thereby influence the engineering safety quality.
For preventing to prick the appearance of a problem, how the slide plate in box culvert or the working pit is reserved certain slope of facing upward usually, there is one to reserve height when making box culvert eject slide plate earlier.But on softer stratum, the box culvert base plate " is eaten soil " in jacking, still can cause " pricking head " phenomenon to take place, thereby influence the engineering safety quality.Face upward the slope and reserve in slide plate and the prefabricated process of box culvert, its gradient is often uncontrollable, and yielding and go wrong when causing later stage jacking operation, can not effectively control jacking job execution quality on the contrary; Secondly, because of the deadweight of part box culvert is bigger,, in jack-in process,, is easily damaged or destroyed and can't reach and reserve the intention of facing upward the slope because of the mutual extrusion friction in the gradient self insufficient strength that concrete pavement is reserved.
Summary of the invention
At the above-mentioned defective that exists in the prior art, the utility model provides a kind of steel fore slope that can prevent effectively that in jacking construction box culvert from bowing.
The utility model is achieved by the following technical solution:
Steel fore slope is used in a kind of box culvert jacking, it comprises the end steel plate with segmental arc that a straight section and is bent upwards, the front spring that is located at end steel plate segmental arc front end and fixedlys connected with it, be installed with the end anchor rib that at least one is used for and box culvert base plate bottom is fixing on the end steel plate, be installed with on the front spring and be used for and preceding reserving rib that box culvert base plate forward position is fixing.
The utility model can make end steel plate be anchored in box culvert base plate bottom by end anchor rib and preceding reserving rib being connected with design reinforcing bar in the box culvert base plate and being anchored in the box culvert base plate when practical application.The steel fore slope that is fixed with one with it that box culvert is provided with by its bottom, in jack-in process, the subgrade reaction that produces when utilization pushes away away the soil under the slope and form a nose-up pitching moment makes box culvert be in the new line state in jack-in process, thereby prevents to bow in the box culvert jacking.Steel fore of the present utility model slope, in jack-in process, can effectively avoid box culvert base plate fore slope concrete and slide plate concrete directly to act on, prevent to reserve the fore gradient because of concrete damages to influence, can keep box culvert and in jack-in process, remain a kind of controllable state, effectively prevent the bundle problem in the box culvert jack-in process.
End steel plate in the utility model can adopt various connected modes to be connected with front spring, and reliable in order to guarantee in the jack-in process to connect, end steel plate and front spring preferably are made as one or one is made, and for example can adopt to weld or by monoblock steel plate mechanical compression molding.The radian of the segmental arc of end steel plate can suitably be adjusted according to actual needs.
The beneficial effects of the utility model are: the utility model is simple in structure, be easy to make, it adopts steel plate to make, sturdy and durable, can effectively avoid box culvert underplate concrete and slide plate concrete directly to act on and the influence reservation fore gradient, effectively guarantee that the fore gradient is not damaged in the jack-in process, and can keep box culvert and in jack-in process, remain a kind of controllable state, effectively prevent the bundle problem in the jack-in process.
Description of drawings
Fig. 1 is the front view on steel fore slope;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the connection diagram of steel fore slope and box culvert;
Among the figure, 1, end steel plate, 2, end anchor rib, 3, preceding reserving rib, 4, front spring, 5, the box culvert base plate.
The specific embodiment
Below in conjunction with accompanying drawing and non-limiting embodiment the utility model is further described:
Shown in accompanying drawing 1-3, box culvert jacking shown in the present embodiment comprises end steel plate 1, front spring 4 with steel fore slope, steel plate 1 employing in the end has certain thickness steel plate and processes, it has the segmental arc that a straight section and is bent upwards, wherein, the radian of segmental arc can suitably be adjusted according to actual needs, being fixed with at least one on the end steel plate 1 is used for and the fixing end anchor rib 2 in box culvert base plate 5 bottoms, end anchor rib 2 can adopt reinforcing bar, its quantity is decided according to the design needs, and end anchor rib 2 can adopt the mode of welding to fix with end steel plate 1.Front spring 4 is arranged on the front end of end steel plate 1 segmental arc, it adopts certain thickness steel plate to process, itself and end steel plate 1 can be welded as a whole by the mode of welding or by monoblock steel plate mechanical compression molding, front spring 4 is provided with at least one and is used for and the fixing preceding reserving rib 3 in box culvert base plate 5 forward positions, preceding reserving rib 3 can adopt reinforcing bar, its quantity is decided according to the design needs, and itself and front spring 4 can be by the mode firm welding of welding.End steel plate 1 and front spring 4 form has the prow shape structure of certain sloped of upstroke.End anchor rib 2 is mainly used in firm being anchored on the box culvert base plate of fore slope steel plate with preceding reserving rib 3.
Using method of the present utility model: when box culvert is prefabricated, process steel fore slope in advance, after sliding plate lubricant coating is finished, directly lay on it and location.In the box culvert reinforcing bar binding, with design reinforcing bar firm welding in end anchor rib 2 and preceding reserving rib 3 and the box culvert, box culvert formwork erection concreting makes it to form one then.After the casing concrete strength reaches designing requirement, can begin jacking construction.The shoveling plane exceeds box culvert base plate bottom surface 3～5cm in the jacking, steel fore slope can effectively avoid base plate fore slope concrete and slide plate concrete directly to act in jack-in process, prevent to reserve the fore gradient because of concrete damages to influence, can keep box culvert and in jack-in process, remain a kind of controllable state, effectively prevent the bundle problem in the box culvert jack-in process.
The foregoing description only is used for explanation of the present utility model, is not to its restriction, and those skilled in the art also can make a change on this basis.
The utility model is simple in structure, is easy to processing, can effectively solve the technical problem of the box culvert bundle head that exists in the jacking construction, has guaranteed engineering construction quality, can be widely used in all kinds of box culvert jacking constructions such as railway, highway, municipal administration.
Claims (2)
1. steel fore slope is used in a box culvert jacking, it is characterized in that: it comprises the end steel plate (1) with segmental arc that a straight section and is bent upwards, the front spring (4) that is located at end steel plate (1) segmental arc front end and fixedlys connected with it, be installed with the end anchor rib (2) that at least one is used for and box culvert base plate bottom is fixing on the end steel plate (1), be installed with on the front spring (4) and be used for and preceding reserving rib (3) that box culvert base plate forward position is fixing.
2. steel fore slope is used in box culvert jacking according to claim 1, it is characterized in that: steel plate of the described end (1) is made as one with front spring (4) or one is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020506116XU CN201817780U (en) | 2010-08-26 | 2010-08-26 | Steel bow slope for box culvert jacking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020506116XU CN201817780U (en) | 2010-08-26 | 2010-08-26 | Steel bow slope for box culvert jacking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201817780U true CN201817780U (en) | 2011-05-04 |
Family
ID=43915743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020506116XU Expired - Lifetime CN201817780U (en) | 2010-08-26 | 2010-08-26 | Steel bow slope for box culvert jacking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201817780U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956373A (en) * | 2010-08-26 | 2011-01-26 | 中铁十局集团有限公司 | Method for preventing box culvert head drop during box culvert jacking construction and used steel ship bow slope |
| CN109267504A (en) * | 2018-09-26 | 2019-01-25 | 北京工业大学 | The fore slope box culvert structure of fast quick-detach |
-
2010
- 2010-08-26 CN CN201020506116XU patent/CN201817780U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956373A (en) * | 2010-08-26 | 2011-01-26 | 中铁十局集团有限公司 | Method for preventing box culvert head drop during box culvert jacking construction and used steel ship bow slope |
| CN101956373B (en) * | 2010-08-26 | 2012-07-04 | 中铁十局集团有限公司 | Method for preventing box culvert head drop during box culvert jacking construction and used steel ship bow slope |
| CN109267504A (en) * | 2018-09-26 | 2019-01-25 | 北京工业大学 | The fore slope box culvert structure of fast quick-detach |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110504 Effective date of abandoning: 20120704 |