CN211312044U - Road widening roadbed splicing structure - Google Patents
Road widening roadbed splicing structure Download PDFInfo
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- CN211312044U CN211312044U CN201922095862.8U CN201922095862U CN211312044U CN 211312044 U CN211312044 U CN 211312044U CN 201922095862 U CN201922095862 U CN 201922095862U CN 211312044 U CN211312044 U CN 211312044U
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Abstract
The utility model relates to a road widens road bed mosaic structure belongs to road construction technical field, including original road bed, be connected with original road surface layer on the roof that original road bed deviates from the geocentric, one side is connected with and widens the road bed is waited to widen by original road bed, the side is connected with and widens road surface layer is waited to widen by original road surface layer, widen road surface layer fixed connection on widening the road bed, original road bed and widening are connected with between the road bed and prevent subsiding coupling assembling, prevent subsiding coupling assembling and include that geogrid is moulded to a plurality of layers of steel, it lays with the road bed material interval to mould geogrid and wait to widen one end fixed connection with original road bed, mould each layer below of geogrid and all install a plurality of reinforcing bars that. The utility model discloses have and can strengthen the support to geogrid and road bed, alleviate the effect that the road bed sinks the risk that causes the road surface unevenness.
Description
Technical Field
The utility model belongs to the technical field of the road construction technique and specifically relates to a road widening roadbed mosaic structure is related to.
Background
With the continuous development of the urbanization process in China, the traditional urban road design and construction requirements cannot meet the increasing urban traffic flow, so the number of road widening and modification projects also shows a trend of gradual rise. However, in the implementation process of road widening and reconstruction engineering, the roadbed must be widened at the same time, the newly widened roadbed is prone to deposition, is unstable and has large relative pavement deposition amplitude, and the deposition of old pavements is completed, so that a deposition difference is formed between the new pavements and the old pavements, the pavements are uneven, and the pavements are prone to collapse under severe conditions.
The patent application with the application publication number of CN102619150A discloses an anchoring type road bed widening method, and belongs to the technical field of road construction. Firstly, slope cutting is carried out on the slope surface of the old roadbed, then steps are dug on the slope surface of the old roadbed from the ground, anchoring holes are obliquely drilled in the connecting positions of the vertical surfaces and the horizontal surfaces of the steps towards the interior of the old roadbed, reinforcing steel bars are placed in the anchoring holes, and the reinforcing steel bars and the old roadbed are poured into a whole through grouting. Laying new roadbed in layers and rolling, when the new roadbed is level with the step of the old roadbed provided with the anchoring drill hole to be filled, laying geogrids on the steps of the new roadbed and the old roadbed, connecting the transverse ribs of the geogrids with the end hooks of the exposed parts of the reinforcing steel bars, bending upwards, tensioning the geogrids and fixing the geogrids with the lower layer of soil, and finally filling soil on the geogrids and rolling. The invention adopts the anchor rod technology to reinforce the old roadbed slope, realizes the connection of the geogrid and the old roadbed into a whole, avoids the geogrid from sliding on the steps of the old roadbed, improves the stability of the new roadbed and the old roadbed, and effectively controls uneven settlement.
The technical scheme has the following defects: due to the low hardness of the geogrid, the geogrid has a weak effect when the newly-added roadbed is settled but not landslide.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing a road widening road bed mosaic structure has the reinforcing and subsides with the possible advantage that reduces the road bed to the support of geogrid and road bed.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a road widening road bed mosaic structure, including original road bed, be connected with original road surface layer on the roof that original road bed deviates from the geocentric, original road bed is waited to widen one side and is connected with and widens the road bed, the side of waiting to widen of original road surface layer is connected with and widens the road surface layer, widen road surface layer fixed connection on widening the road bed, original road bed with widen and be connected with between the road bed and prevent subsiding coupling assembling, prevent subsiding coupling assembling and include that geogrid is moulded to a plurality of layers steel, steel is moulded geogrid and is laid with the road bed material interval, steel is moulded geogrid and is waited to widen one end fixed connection with original road bed, mould each layer below of geogrid.
Through adopting above-mentioned technical scheme, steel-plastic geogrid can improve the road bed bearing capacity to a certain extent, and steel-plastic geogrid can distribute the load to horizontal wideer underlayment effectively to road basic unit's side limit effect, and the reinforcing bar plays vertical supporting role to steel-plastic geogrid, thereby reduces the possibility that widens the road bed and takes place to subside and cause the road surface to split or sink.
The utility model discloses further set up to: one end of the original roadbed to be widened is provided with a plurality of steps, the side wall of each step is connected with one end, close to the original roadbed, of the steel-plastic geogrid, and one end, far away from the road surface, of the steel-plastic geogrid is abutted to the bottom wall, facing the road surface, of each step.
By adopting the technical scheme, the original subgrade deposition is finished, the possibility of large-amplitude settlement is relatively low, the widened subgrade is connected to the original subgrade in a staggered manner, the anti-settlement shape of the widened subgrade can be further enhanced, and the possibility of settlement and detachment of the original subgrade of the widened subgrade is reduced.
The utility model discloses further set up to: and firstly, carrying out surface cleaning work on one end to be widened of the original roadbed, and then forming a plurality of continuous steps.
Through adopting above-mentioned technical scheme, the soft soil and the impurity in shallow layer can be detached in the work of table cleaning, and the original roadbed structure at step place is compact for the step is connected more firmly with widening the road bed, alleviates because original road bed top layer is soft to lead to widening the possibility that the road bed drops.
The utility model discloses further set up to: steel-plastic geogrid one end is connected with a plurality of anchor rods on the lateral wall of the step in an abutting mode, each anchor rod comprises a connecting rod, one end of each connecting rod penetrates out of a gap of the steel-plastic geogrid and is connected to an original roadbed, the other end of each connecting rod is connected with a limiting column, and the steel-plastic geogrid is supported by the limiting column to be pressed on the top wall of the step towards the road surface.
Through adopting above-mentioned technical scheme, because the connecting rod inserts and fixes in the original road bed, the pressure of spacing post can be fixed steel-plastic geogrid on the roof of step towards the road surface for steel-plastic geogrid is more firm, reduces the relative step of steel-plastic geogrid and takes place the possibility of sliding.
The utility model discloses further set up to: the outer wall of the connecting rod is provided with a thread ring.
Through adopting above-mentioned technical scheme, the screw thread circle can strengthen the frictional force of connecting rod and original road bed, reduces the possibility that the connecting rod drops from original road bed.
The utility model discloses further set up to: one end, far away from the step, of the steel-plastic geogrid is connected with a plurality of U-shaped nails, the bottom walls of the U-shaped nails are located on a framework of the steel-plastic geogrid, and two side walls of the U-shaped nails penetrate out of a gap of the steel-plastic geogrid and are inserted into the widened roadbed.
Through adopting above-mentioned technical scheme, the one end that the step was kept away from to steel-plastic geogrid is fixed to widening the road bed towards the roof on road surface to the U type nail for steel-plastic geogrid is more stable, and difficult emergence is slided.
The utility model discloses further set up to: the original pavement layer and the widened pavement layer are both arranged in the same gradient.
By adopting the technical scheme, the water on the road surface can flow to the roadside conveniently, and the water accumulation on the road surface is reduced.
The utility model discloses further set up to: the tail end of the original roadbed is a concrete anti-skid slope part, and the anti-skid slope part is a triangular prism with a right-angled triangle section.
Through adopting above-mentioned technical scheme, landslide prevention portion can block that the soil property ground of tamping is not hard up, plays the possibility that reduces landslide probability.
The utility model discloses further set up to: and a plurality of mutually vertical steel bar groups are arranged in the landslide prevention part.
Through adopting above-mentioned technical scheme, the reinforcing bar group is used for improving the support intensity of anti-skidding slope portion, reduces the possibility that anti-skidding slope portion is collapsed by the ground extrusion.
The utility model discloses further set up to: widen fixedly connected with water catch bowl between road bed and original road bed, fixedly connected with on the water catch bowl and the connecting plate that original road bed links to each other, the inlet opening has been seted up on the water catch bowl top, is connected with the aqueduct on the water catch bowl.
By adopting the technical scheme, the water collecting tank collects the water permeating between the original road surface and the widened road surface, and the water is timely discharged through the water guide pipe, so that the probability that the water permeating through the road surface diffuses and permeates in the widened road bed and damages the widened road bed is reduced.
To sum up, the utility model discloses a beneficial technological effect does:
1. the steel-plastic geogrid can rapidly improve the bearing capacity of a roadbed, the side limit effect on a road base layer can effectively distribute load to a wider base layer, the longitudinal support of the steel-plastic geogrid is reinforced by reinforcing steel bars, and the possibility of pavement cracking or collapse caused by settlement of the widened roadbed is reduced;
2. the widened roadbed is connected to the original roadbed in a staggered mode through the steps, so that the anti-settlement shape of the widened roadbed can be further enhanced, and the possibility of settlement of the widened roadbed and detachment of the original roadbed is reduced;
3. the anchor rods enable the step to be connected with the widened roadbed more firmly, and the possibility that the widened roadbed falls off due to the fact that the original roadbed surface layer is soft is reduced;
4, the steel-plastic geogrid is more stable through the U-shaped nails, and the possibility that the steel-plastic geogrid slides relative to the step is reduced;
5. the water collecting tank collects water permeating between the original road surface and the widened road surface, and the water is timely discharged through the water guide pipe, so that the probability that the water permeating through the road surface diffuses and permeates in the widened roadbed and damages the widened roadbed is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a schematic structural view for illustrating a widening roadbed laying process;
FIG. 4 is an enlarged view of portion B of FIG. 3;
fig. 5 is an enlarged view of a portion C of fig. 2.
In the figure, 1, the original roadbed; 2. an original pavement layer; 3. an anti-settling connection assembly; 31. a step; 32. steel-plastic geogrids; 33. an anchor rod; 331. a connecting rod; 332. a limiting column; 34. a U-shaped nail; 4. widening the roadbed; 5. widening the pavement layer; 6. reinforcing steel bars; 7. original road side slopes; 8. a road slope; 9. a landslide prevention section; 91. a set of rebars; 10. a water collection tank; 101. a connecting plate; 102. a water inlet hole; 103. a water conduit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and fig. 2, for the utility model discloses a road widens road bed mosaic structure, including original road bed 1, original road bed 1 go up fixed connection's original road surface layer 2, original road bed 1 treat widen one side fixed connection prevent subside coupling assembling 3, prevent subside 3 other end connection of coupling assembling widen road bed 4 and original road surface layer 2 treat widen lateral wall fixed connection widen road surface layer 5, widen road surface layer 5 fixed connection widen on the road bed 4.
Referring to fig. 1, the end of the widened subgrade 4 and the widened pavement 5 far away from the original subgrade 1 is connected with a side slope 8, one end of the side slope 8 is connected with the widened pavement 5, and the end of the side slope 7 far away from the widened pavement 5 inclines towards the center of the earth and is connected with the end of the widened subgrade 4 far away from the pavement, so that accumulated water on the pavement flows down along the side slope 8. Original pavement layer 2 is the same inclination setting with widening pavement layer 5, and the ponding flow direction roadside of being convenient for alleviates the ponding water yield on road.
Referring to fig. 1 and 2, in order to reduce the possibility of the landslide of the roadside slope 8, the end of the widened roadbed 4 is concreted to form the landslide prevention section 9, a plurality of reinforcement bars 91 are vertically connected to each other are fixedly installed inside the landslide prevention section 9, and the bottoms of the reinforcement bars 91 are inserted into the soil to improve the restriction of the landslide prevention section 9.
Referring to fig. 2 and 3, the side walls of the original roadbed 1 and the original pavement layer 2 are connected with an original road side slope 7, and an included angle between the original road side slope 7 and the horizontal plane is an acute angle, so that accumulated water on the pavement can be conveniently drained. In order to connect the anti-settling connecting assembly 3 more stably, surface cleaning work is carried out on the surface of the original road side slope 7, and shallow soft soil and impurities are removed. The surface cleaning area takes the original road slope 7 as a longer bottom edge and is in an isosceles trapezoid shape, and the cleaning thickness is determined according to the condition of the close degree of the shallow soil of the original road slope 7. After the surface is cleaned, a plurality of steps 31 are arranged on the side wall, connected with the roadbed, of the surface cleaning layer, the height of each step 31 can be 80cm, and the width of each step 31 can be larger than the height of the step 31.
Referring to fig. 2 and 3, the top wall of the step 31 facing the road surface is provided with a plurality of steel-plastic mesh geogrids 32. One end of the steel-plastic geogrid 32 abuts against the side wall of the step 31 and is connected with a plurality of L-shaped anchor rods 33, each anchor rod 33 comprises a connecting rod 331 in the shape of a cylindrical rod, one end of each connecting rod 331 penetrates out of a gap of the steel-plastic geogrid 32 and is inserted into the original roadbed 1, and the outer wall of each connecting rod 331 can be provided with a threaded ring for reducing the possibility that the connecting rod 331 falls off; the other end of the connecting rod 331 is connected with a limiting column 332, and the steel-plastic geogrid 32 is pressed against the top wall of the step 31 facing the road surface by the limiting column 332. The limiting column 332 can be processed into an L shape, one end of the limiting column presses the steel-plastic geogrid 32 against the top wall of the step 31 facing the road surface, and the other end of the limiting column can be inserted into the step 31 from the contact position of the steel-plastic geogrid 32 and the step 31, so that the possibility that the steel-plastic geogrid 32 slides relative to the step 31 is prevented. The width of the steel-plastic geogrid 32 can be not less than 2.5m, the main stress direction is transversely arranged along the widened roadbed 4, the other end of the steel-plastic geogrid 32 is fixed at one end, facing the road surface, of the widened roadbed 4 through a plurality of U-shaped nails 34 after tensioning, the bottom walls of the U-shaped nails 34 are arranged on the framework of the steel-plastic geogrid 32, the two side walls of the U-shaped nails 34 penetrate through holes of the steel-plastic geogrid 32 and are connected into the widened roadbed 4, the steel-plastic geogrid 32 is made to be more stable, and the U-shaped nails 34 can be made of steel bars with the diameter of.
Referring to fig. 2 and 3, in order to improve the support strength of the steel-plastic geogrid 32, a reinforcing steel bar 6 is fixedly connected between each layer of steel-plastic geogrid 32 and the step 31, and one end of the reinforcing steel bar 6 close to the step 31 is inserted and fixed into the original roadbed 1. And serves to prevent the steel-plastic geogrid 32 from being settled together with the widened roadbed 4 under a large pressure.
Referring to fig. 2 and 5, in order to reduce damage to the widened base 4 caused by the penetration of road surface water into the joints of the existing base 1 and the widened base 4, a water collection sump 10 is fixedly connected to the joints of the existing base 1 and the uppermost part of the widened base 4. Water catch bowl 10 is isosceles trapezoid and inside hollow box body for the cross-section, and the top fixedly connected with connecting plate 101 of water catch bowl 10 slope lateral wall, and connecting plate 101 is pegged graft in original road bed 1 for on being connected to original road bed 1 with water catch bowl 10 fixed connection. The top wall of the water collecting tank 10 is provided with a plurality of water inlet holes 102 communicated with the internal cavity for water supply infiltration, the side wall of the water collecting tank 10 far away from the original roadbed 1 is fixedly connected with water guide pipes 103 at intervals of 3m-5m along the length direction of the road, one end of each water guide pipe 103 is communicated with the water collecting tank 10, and the other end of each water guide pipe extends towards the road side slope 8 and extends out of the road side slope 8. The water collecting device is used for discharging water collected by the water collecting tank 10 in time, and the probability that the water permeating the road surface diffuses and permeates in the widened roadbed 4 and damages the widened roadbed 4 is reduced.
The implementation principle of the embodiment is as follows: the constructor firstly carries out surface cleaning work on the surface of the original road slope 7 to remove shallow soft soil and impurities, then processes a plurality of same steps 31 on the side wall of the original road bed 1 after cleaning, and then lays and widens the road bed 4 from the bottom. When the widened roadbed 4 and the top wall of the first-stage step 31 far away from the road surface are level, steel bars 6 are installed on the level of the step 31, the steel bars 6 are driven into the original roadbed 1 for fixation, then the steel-plastic geogrid 32 is placed above the steel bars 6, one end of the steel-plastic geogrid 32 is fixed to the top wall of the step 31 facing the road surface through anchor rods 33, then the steel-plastic geogrid 32 is pulled close and tensioned, and the other end of the steel-plastic geogrid 32 is fixed to one end of the widened roadbed 4 facing the road surface through U-shaped nails 34. After one layer of soil is tamped and filled, the water collection tank 10 is installed, and then the tamped soil layer is continuously filled until the tamped soil layer is flush with the bottom end of the adjacent step 31, so that the first layer of laying is completed. And then, continuously fixing the steel bars 6, the steel-plastic geogrids 32 and the like in the same way until the paved widened roadbed 4 is level with the steps 31 close to the road surface, and then paving the widened roadbed 4 with the widened pavement layer 5.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. The utility model provides a road widening road bed mosaic structure, including original road bed (1), be connected with original road surface layer (2) on the roof that original road bed (1) deviates from the geocentric, original road bed (1) are treated to widen one side and are connected with and widen road bed (4), the side of widening of waiting of original road surface layer (2) is connected with and widens road surface layer (5), widen road surface layer (5) fixed connection on widening road bed (4), original road bed (1) and widen and be connected with between road bed (4) and prevent subsiding coupling assembling (3), prevent subsiding coupling assembling (3) and mould geogrid (32) including a plurality of layers of steel, grid (32) are moulded to the steel and are laid with the road bed material interval, mould geogrid (32) and wait to widen one end fixed connection with original road bed (1), its characterized: and a plurality of steel bars (6) for improving the support strength of the steel-plastic geogrid (32) are arranged below each layer of the steel-plastic geogrid (32).
2. A road widening roadbed splicing structure as recited in claim 1, wherein: a plurality of steps (31) are arranged at one end of the original roadbed (1) to be widened.
3. A road widening roadbed splicing structure as claimed in claim 2, wherein: the end to be widened of the original roadbed (1) is firstly subjected to surface cleaning work, and then a plurality of continuous steps (31) are arranged.
4. A road widening roadbed splicing structure as claimed in claim 3, wherein: steel-plastic geogrid (32) one end butt is to being connected with a plurality of stock (33) on the lateral wall of step (31), and stock (33) are including connecting rod (331), and connecting rod (331) one end is worn out and is connected to original road bed (1) from the space of steel-plastic geogrid (32), and the connecting rod (331) other end is connected with spacing post (332), and spacing post (332) support steel-plastic geogrid (32) to press on step (31) towards the roof on road surface.
5. The road widening roadbed splicing structure of claim 4, wherein: the outer wall of the connecting rod (331) is provided with a thread ring.
6. The road widening roadbed splicing structure of claim 4, wherein: one end, far away from step (31), of steel-plastic geogrid (32) is connected with a plurality of U-shaped nails (34), the bottom wall of each U-shaped nail (34) is located on the skeleton of the steel-plastic geogrid (32), and two side walls of each U-shaped nail (34) penetrate out of the gap of the steel-plastic geogrid (32) to be inserted into the widened roadbed (4).
7. A road widening roadbed splicing structure as recited in claim 1, wherein: the original pavement layer (2) and the widened pavement layer (5) are arranged in the same inclination.
8. A road widening roadbed splicing structure as recited in claim 1, wherein: the tail end of the original roadbed (1) is provided with a concrete anti-skid slope part (9), and the anti-skid slope part (9) is a triangular prism with a right-angled triangle section.
9. The road widening roadbed splicing structure of claim 8, wherein: and a plurality of mutually vertical steel bar groups (91) are arranged in the landslide prevention part (9).
10. The road widening roadbed splicing structure of claim 6, wherein: widen fixedly connected with water catch bowl (10) between road bed (4) and original road bed (1), fixedly connected with is gone up in water catch bowl (10) and is connected with connecting plate (101) that original road bed (1) link to each other, and inlet opening (102) have been seted up on water catch bowl (10) top, are connected with aqueduct (103) on water catch bowl (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922095862.8U CN211312044U (en) | 2019-11-28 | 2019-11-28 | Road widening roadbed splicing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922095862.8U CN211312044U (en) | 2019-11-28 | 2019-11-28 | Road widening roadbed splicing structure |
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| Publication Number | Publication Date |
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| CN211312044U true CN211312044U (en) | 2020-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922095862.8U Expired - Fee Related CN211312044U (en) | 2019-11-28 | 2019-11-28 | Road widening roadbed splicing structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323559A (en) * | 2020-11-04 | 2021-02-05 | 深圳市罗湖建筑安装工程有限公司 | Transverse new and old roadbed connecting structure and construction method |
| CN113863072A (en) * | 2021-10-12 | 2021-12-31 | 广东深已建设工程有限公司 | Construction method for widening roadbed of concrete highway |
| CN113914164A (en) * | 2021-10-18 | 2022-01-11 | 重庆交通大学 | Widened roadbed structure of expressway and construction method thereof |
-
2019
- 2019-11-28 CN CN201922095862.8U patent/CN211312044U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323559A (en) * | 2020-11-04 | 2021-02-05 | 深圳市罗湖建筑安装工程有限公司 | Transverse new and old roadbed connecting structure and construction method |
| CN113863072A (en) * | 2021-10-12 | 2021-12-31 | 广东深已建设工程有限公司 | Construction method for widening roadbed of concrete highway |
| CN113863072B (en) * | 2021-10-12 | 2022-09-16 | 广东深已建设工程有限公司 | Construction method for widening roadbed of concrete highway |
| CN113914164A (en) * | 2021-10-18 | 2022-01-11 | 重庆交通大学 | Widened roadbed structure of expressway and construction method thereof |
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Granted publication date: 20200821 Termination date: 20211128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |