CN214938904U - Roadbed extension width splicing structure - Google Patents

Abstract

The utility model relates to a wide structure is pieced together in road bed extension relates to road extension technical field, and it includes old road bed base member, widens the road bed and sets up in old road bed base member and the road surface on widening the road bed with being connected with old road bed base member, old road bed base member both sides are equipped with digs the step, widen the road bed including ramming the layer and setting up in the intraformational geogrid of ramming, geogrid one end with dig the step and be connected, the other end is connected with the ramming layer. The application has solved the region between rubble bed course and the road surface and has taken place to sink by the action of gravity easily, damages the problem on road surface.

Description

Roadbed extension width splicing structure

Technical Field

The application relates to the technical field of road extension, in particular to a roadbed extension width splicing structure.

Background

With the continuous acceleration of the infrastructure construction process, many old roads are not suitable for the current vehicle driving requirements due to the fact that the roads are too narrow, and usually, the road bed of the old roads is widened, so that the road surface above the road bed is widened.

See the utility model patent of grant publication number for CN212316575U in the correlation technique and disclose a be used for highway to expand ground processing structure, including the pile body, the cooperation of pile body top has the pile cap, the graded rubble has been laid at pile cap top, the geogrid has been laid to the inside level of graded rubble, and one side parcel that former road bed was kept away from to the graded rubble has geotechnological cloth, forms the bearing structure of expansion road bed jointly.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: according to the highway extension foundation treatment structure, when a vehicle runs on a road above, the area between the gravel cushion layer and the road surface is prone to collapse under the action of gravity, the road surface is damaged, and the running of the vehicle on the road surface is affected.

SUMMERY OF THE UTILITY MODEL

In order to improve the region between rubble bed course and the road surface and receive the action of gravity easily and take place to sink, damage the problem on road surface, this application provides a road bed extension and pieces together wide structure.

The application provides a wide structure is pieced together in road bed enlargement adopts following technical scheme:

the utility model provides a road bed extension piece together wide structure, includes old road bed base member, widens the road bed and sets up in old road bed base member and the road surface on widening the road bed that is connected with old road bed base member, old road bed base member both sides are equipped with and dig the step, widen the road bed including ramming the layer and setting up in the intraformational geogrid of ramming, geogrid one end with dig the step and be connected, the other end is connected with the ramming layer.

By adopting the technical scheme, the digging steps arranged on the old roadbed base body can reduce the possibility of landslide of the old roadbed base body, and meanwhile, the connection between the widened tamping layer of the roadbed and the digging steps can be firmer; geogrid one end is connected with digging the step on the old roadbed base member, the other end is connected with widening the tamped layer in the roadbed, can make widening the roadbed and be connected more firmly with old roadbed base member, it sinks to have reduced to widen the roadbed outside and causes the sunken possibility in road surface, and simultaneously, geogrid in the tamped layer can strengthen the structure on tamped layer, has promoted the bearing capacity who widens the roadbed, the region of having reduced between rubble bed course and the road surface is taken place to sink by the action of gravity easily, damage the possibility on road surface.

Optionally, at least two layers of geogrids are arranged on the digging steps on two sides of the old roadbed base body, close to the road surface.

Through adopting above-mentioned technical scheme, be close to the road surface dig the two-layer geogrid that sets up on the step can further promote and widen the bearing capacity of road bed top, further reduced the ramming layer of widening the road bed and received the road surface action of gravity and take place the possibility of subsiding, promoted the road safety nature on road surface.

Optionally, the digging step comprises a table top, and one end of the table top, which is close to the old roadbed base, is obliquely arranged in a direction away from the road surface to form a slope.

Through adopting above-mentioned technical scheme, dig the slope that the step mesa set up and can further prevent that old roadbed base body from taking place the possibility that sideslips, also can make old roadbed base body and widen the roadbed connection more firmly simultaneously.

Optionally, a gravel layer is arranged at one end, far away from the road surface, of the widened roadbed, and the geogrid is arranged on the gravel layer.

Through adopting above-mentioned technical scheme, widen the gravel layer of road bed bottom and the geogrid on the gravel layer can strengthen the structure of widening the road bed bottom, reduced and widened the whole sunken possibility of road bed, further promoted the bearing capacity who widens the road bed.

Optionally, one side of the widened roadbed, which is far away from the old roadbed base body, is provided with a waterproof coiled material.

Through adopting above-mentioned technical scheme, widen the waterproofing membrane of road bed side can reduce the rainwater and soak and widen road bed tamping course, and then cause the soft possibility that arouses the landslide of tamping course soil property, promoted the stability of widening the roadbed structure.

Optionally, a glass fiber grating is arranged on the waterproof roll, and a fixing piece for fixing the glass fiber grating is arranged on the glass fiber grating.

Through adopting above-mentioned technical scheme, glass fiber grating can play the reinforcing effect on waterproofing membrane, has reduced the possibility that waterproofing membrane drops, and mounting on the glass fiber grating can play the fixed action to glass fiber grating, further consolidates waterproofing membrane.

Optionally, the fixing member includes a mounting plate and an insertion rod fixed to the mounting plate.

Through adopting above-mentioned technical scheme, the mounting can utilize the inserted bar to insert the tamping layer of widening in the road bed and fix the glass fiber grating on the tamping layer.

Optionally, a cement mortar layer is arranged on the glass fiber grating.

Through adopting above-mentioned technical scheme, glass fiber grating and waterproofing membrane can further be fixed on the cement mortar layer, also can further promote simultaneously and widen the water-proof effects of road bed side, have reduced and have widened the road bed in the tamping layer landslide appear and cause the road surface to subside the possibility.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the digging steps arranged on the old roadbed base body can reduce the possibility of landslide of the old roadbed base body, and can be connected more firmly when the tamping layer of the roadbed is widened and the digging steps are connected; one end of the geogrid is connected with the digging step on the old roadbed base body, and the other end of the geogrid is connected with the tamping layer in the widened roadbed, so that the widened roadbed and the old roadbed base body can be connected more firmly, the possibility that the widened roadbed collapses outwards to cause the sinking of the road surface is reduced, meanwhile, the geogrid in the tamping layer can strengthen the structure of the tamping layer, the bearing capacity of the widened roadbed is improved, and the possibility that the area between the broken stone cushion layer and the road surface is easily collapsed under the action of gravity to damage the road surface is reduced;

2. widen the waterproofing membrane, the glass fiber grating and the outer cement mortar layer that sets up of road bed side, can play fine guard action to widening the ramming layer in the road bed, reduced the rainwater and caused ramming layer soil texture soft in getting into the ramming layer, and then arouse that ramming layer landslide causes the possibility of road surface subsides.

Drawings

Fig. 1 is a schematic view of a roadbed extension widening structure in embodiment 1 of the present application;

fig. 2 is a schematic view of a roadbed extension widening structure in embodiment 2 of the present application;

fig. 3 is an enlarged view of a portion a in fig. 2.

Description of reference numerals: 1. old roadbed base; 11. digging steps; 111. a table top; 2. widening the roadbed; 21. tamping the layer; 22. a geogrid; 23. a crushed stone layer; 24. waterproof coiled materials; 25. a glass fiber grid; 26. a fixing member; 261. mounting a plate; 262. inserting a rod; 27. a cement mortar layer; 3. a road surface.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses road bed extension piece wide structure.

Example 1

Referring to fig. 1, the roadbed extension widening structure includes an old roadbed base 1, a widened roadbed 2 connected to the old roadbed base 1, and a road surface 3 provided on the old roadbed base 1 and the widened roadbed 2. Widen road bed 2 and include rammed layer 21, be equipped with geogrid 22 in the rammed layer 21, geogrid 22 can play the reinforcing action to rammed layer 22, has reduced the region between rubble bed course and the road surface and has taken place to sink by the action of gravity easily, damages the possibility on road surface.

Referring to fig. 1, digging steps 11 are arranged on the side face of the joint of the old roadbed base body 1 and the widened roadbed 2, each digging step 11 comprises a table top 111, the digging steps 11 are multiple, and the digging steps 11 are arranged on the side wall layers of the old roadbed base body 1 in a stepped mode. The digging of the step 11 can reduce the possibility of the side wall of the old roadbed base body 1 from landslide, and simultaneously, the digging of the step can also be more helpful for the connection between the old roadbed base body 1 and the widened roadbed 2. In order to further reduce the possibility that the old roadbed base 1 sideslips and further the road surface 3 sinks to influence road traffic, one end, close to the old roadbed base 1, of the table top 111 inclines downwards to form a slope, and the inclined table top 111 can further reduce the possibility that the old roadbed base sideslips. The widened roadbed 2 is connected with the digging steps 11 on the old roadbed base body 1.

Referring to fig. 1, the widened roadbed 2 includes a rammed layer 21, the rammed layer 21 may be a layer of a jumbo soil, and the rammed layer 21 is connected to the old roadbed substrate 1 at one side and to the road surface 3 at the other side. The ramming layer 21 is filled with geogrids 22, one end of each geogrid 22 is placed on the table top 111 on the digging step 11, the other end of each geogrid 22 is inserted into the ramming layer 21, and the geogrids 22 can play a role in connecting the old roadbed base body 1 and the widened roadbed 2, so that the connection between the old roadbed base body and the widened roadbed 2 is more compact; meanwhile, the geogrid 22 can increase the strength of the rammed layer 21, improve the bearing capacity of the rammed layer 21 and reduce the possibility that the rammed layer 21 collapses to cause the pavement 3 to sink. In order to further reduce the possibility of sinking of the pavement 3, two layers of geogrids 22 are arranged on the excavation step 11 close to the pavement 3, and the two layers of geogrids 22 can increase the bearing capacity above the tamping layer 21 and reduce the possibility of collapse of the tamping layer 21. In order to reduce the possibility of the overall subsidence of the rammed layer 21, a gravel layer 23 is laid at one end of the rammed layer 21, which is far away from the pavement 3, a geogrid 22 is laid on the gravel layer 23, and the structure of the gravel layer 23 and the geogrid 22 can strengthen the structure below the rammed layer 21, so that the possibility of the overall subsidence of the rammed layer 21 is reduced.

The implementation principle of the roadbed extension widening structure is as follows: geogrid 22 one end is connected with digging step 11 on the old roadbed base body 1, and the other end is connected with rammed layer 21, and geogrid 22 in rammed layer 21 can promote the bearing capacity of rammed layer 21, has reduced the region between rubble bed course and the road surface and has taken place to sink by the action of gravity easily, the possibility of damaging the road surface.

Example 2

Referring to fig. 2 and 3, the difference between this embodiment and embodiment 1 is that a waterproof roll 24 is laid on the tamping layer 21 on the side away from the old roadbed base 1, and the waterproof roll 24 can reduce the possibility that the tamping layer 21 is immersed by rainwater to loosen the soil of the tamping layer 21, thereby causing the sinking of the pavement 3. In order to reduce the possibility of the waterproof roll 24 falling off, the waterproof roll 24 is paved with the glass fiber grating 25, the fixing pieces 26 are installed on the glass fiber grating 25, the number of the fixing pieces 26 is multiple, the fixing pieces 26 comprise an installation plate 261 and an inserting rod 262 fixed on the installation plate 261, and the inserting rod 262 penetrates through the glass fiber grating 25 and the waterproof roll 24 and is inserted into the tamping layer 21, so that the glass fiber grating 25 is fixed, the possibility of the glass fiber grating 25 falling off is reduced, and the possibility of the tamping layer 21 sliding is reduced due to the glass fiber grating 25. In order to further fix the waterproof coiled material 24 and the glass fiber grating 25, a cement mortar layer 27 is laid on the glass fiber grating 25, and the cement mortar layer 27 can also play a waterproof effect, so that the possibility of the pavement 3 sinking caused by the fact that the tamping layer 21 is soaked in water is further reduced; at the same time, cement mortar layer 27 also reduces the likelihood of rammed layer 21 landslide.

The implementation principle of the roadbed extension widening structure is as follows: the geogrid 22 in the tamping layer 21 can improve the bearing capacity of the tamping layer 21, and the possibility that the area between the broken stone cushion layer and the pavement is easily collapsed under the action of gravity and the pavement is damaged is reduced; simultaneously, waterproofing membrane 24 on the layer 21 lateral wall of ramming can reduce ramming layer 21 and arouse that the soil property is loose by the rainwater infiltration, and then causes the sunken possibility in road surface 3, and glass fiber grating 25 can play the reinforcing effect to waterproofing membrane 24, has reduced the possibility that ramming layer 21 lateral wall takes place the landslide, and cement mortar layer 27 can further consolidate ramming layer 21 lateral wall, has further reduced ramming layer 21 and has soaked, arouses the sunken possibility in road surface 3.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a road bed extension piece together wide structure, includes old road bed base member (1), widen road bed (2) and set up in old road bed base member (1) and widen road surface (3) on road bed (2) with being connected with old road bed base member (1), old road bed base member (1) both sides are equipped with digs step (11), its characterized in that: widen road bed (2) including rammed layer (21) and set up geogrid (22) in rammed layer (21), geogrid (22) one end with dig step (11) and be connected, the other end is connected with rammed layer (21).

2. The roadbed extension widening structure of claim 1, wherein: and at least two layers of geogrids (22) are arranged on the digging steps (11) on two sides of the old roadbed base body (1) close to the road surface (3).

3. The roadbed extension widening structure of claim 1, wherein: the digging step (11) comprises a table top (111), and one end, close to the old roadbed base body (1), of the table top (111) is inclined towards the direction far away from the road surface to form a slope.

4. The roadbed extension widening structure of claim 1, wherein: one end, far away from the road surface (3), of the widened roadbed (2) is provided with a gravel layer (23), and the geogrid (22) is arranged on the gravel layer (23).

5. The roadbed extension widening structure of claim 1, wherein: one side of the widened roadbed (2) far away from the old roadbed base body (1) is provided with a waterproof coiled material (24).

6. The roadbed extension widening structure of claim 5, wherein: and a glass fiber grating (25) is arranged on the waterproof roll (24), and a fixing piece (26) for fixing the glass fiber grating (25) is arranged on the glass fiber grating (25).

7. The roadbed extension widening structure of claim 6, wherein: the fixing piece (26) comprises a mounting plate (261) and an insertion rod (262) fixed on the mounting plate (261).

8. The roadbed extension widening structure of claim 7, wherein: and a cement mortar layer (27) is arranged on the glass fiber grating (25).

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