Road surface recovery structure of pipeline groove

Abstract

The utility model discloses a pavement recovery structure of a pipeline groove. The pavement recovery structure comprises backfill sand, a new road base layer and a new pavement structure layer, wherein the backfill sand is filled in the pipeline groove; the new road base layer and the new pavement structure layer are sequentially paved on the backfill sand; the new pavement layer structure layer comprises a new pavement base layer and a new concrete pavement layer. A layer of first reinforcing material with the width of L is laid on each of the two side edges of the top face of the new road base, and the first reinforcing materials on the two side edges are laid in the mode that the first reinforcing materials expand outwards towards the two sides of the new road base by 1 / 2 L; the new pavement base layer is paved on the top surface of the new road base layer and the top surface of the first reinforcing material; a layer of second reinforcing material with the width of L is laid on each of the two side edges of the top surface of the new pavement base layer, and the second reinforcing materials on the two side edges are laid in the mode of expanding 1 / 2L outwards towards the two sides of the new pavement base layer; and the new concrete pavement layer is paved on the top surface of the new pavement base layer and the top surface of the second reinforcing material. According to the utility model, the quality problem existing between new and old pavements of the pipeline groove can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to a road surface restoration structure for a pipeline groove. Background Art

[0002] At present, most of the renovation of municipal engineering rainwater and sewage pipe networks adopts the excavation construction method. This excavation construction method mainly involves the completion of trench excavation, pipeline and inspection well installation, trench backfilling and compaction, and then the pavement structure restoration construction; the width of the pavement structure restoration is basically the same as the width of the trench excavation. Only in a few areas with heavy traffic or thick existing concrete slabs will measures such as planting reinforcement be used to strengthen the connection between the new and old pavements; and the location of the pipeline trench excavation is mostly located in the center of the road or a lane near the original construction joint. After the construction is completed in the above manner, vehicle loads will directly act on the existing pavement, and the load on this part of the pavement will be transmitted downward to the water-stabilizing layer, roadbed, pipelines and other parts in turn. After a long period of load bearing and roadbed stability, a certain height difference will be generated between the new and old pavement slabs. If it cannot be effectively repaired or grouting reinforcement is performed at the bottom of the pavement slab, it will cause problems such as pavement collapse or settlement, causing hidden dangers to driving safety. Utility Model Content

[0003] The utility model aims to overcome the defects of the prior art and provide a road surface restoration structure for a pipeline groove, which can effectively avoid the quality problems existing between the new and old road surfaces of the pipeline groove.

[0004] The purpose of the utility model is achieved as follows: a road surface restoration structure of a pipeline groove, comprising backfill sand filled on both sides of the pipeline and the top of the pipeline in the pipeline groove, a new road base layer laid on the backfill sand, and a new road surface structure layer laid on the new road base layer; the new road surface structure layer comprises a new road base layer and a new concrete road surface layer, wherein,

[0005] The top surface elevation of the new road base is the same as the top surface elevation of the road base in the existing pavement structure, and a layer of first reinforcing material with a width of L is laid on both sides of the top surface of the new road base, and the first reinforcing material on both sides is laid in a manner of expanding 1 / 2L outwards to both sides of the new road base;

[0006] The new pavement base is laid on the top surface of the new road base and on the top surface of the first reinforcing material on both sides of the top surface of the new road base, and the thickness of the new road base is the same as the thickness of the road base in the existing pavement structure; a layer of second reinforcing material with a width of L is laid on both sides of the top surface of the new road base, and the second reinforcing materials on both sides are laid in a manner of expanding 1 / 2L outwards to both sides of the new road base;

[0007] The new concrete pavement layer is laid on the top surface of the new pavement base and the top surface of the second reinforcing material on both sides of the top surface of the new pavement base. The thickness of the new concrete pavement layer is the same as the thickness of the concrete pavement layer in the existing pavement structure.

[0008] The above-mentioned road surface restoration structure of the pipeline groove, wherein, when the existing road surface structure also includes a lower asphalt structure layer and an upper asphalt structure layer, the new road surface structure layer includes a new lower asphalt structure layer and a new upper asphalt structure layer; a layer of third reinforcing material with a width of L is laid on both sides of the top surface of the new concrete road surface layer, and the third reinforcing material on both sides is laid in a manner of expanding 1 / 2L outward to both sides of the new concrete road surface layer;

[0009] The new lower asphalt structural layer is laid on the top surface of the new concrete pavement layer and on the top surface of the third reinforcing material on both sides of the top surface of the new concrete pavement layer. The thickness of the new lower asphalt structure is the same as the thickness of the lower asphalt structural layer in the existing pavement structure. A layer of fourth reinforcing material with a width of L is laid on both sides of the top surface of the new lower asphalt structural layer, and the fourth reinforcing materials on both sides are laid in a manner of expanding 1 / 2L outward to both sides of the new lower asphalt structural layer; the new upper asphalt structural layer is laid on the top surface of the new lower asphalt structural layer and on the top surface of the fourth reinforcing material on both sides of the top surface of the new lower asphalt structural layer. The thickness of the new upper asphalt structure is the same as the thickness of the upper asphalt structural layer in the existing pavement structure.

[0010] The above-mentioned pipeline groove pavement restoration structure, wherein, when the thickness of the concrete pavement layer in the existing pavement structure is 15-35 cm, a layer of steel bars is implanted between the middle of the thickness of the new concrete pavement layer and the middle of the thickness of the concrete pavement layer in the existing pavement structure every 40-80 cm along the length direction of the groove, and half of the length of the steel bars are implanted in the new concrete pavement layer and the concrete pavement layer in the existing pavement structure; when the thickness of the concrete pavement layer in the existing pavement structure is greater than 35 cm, two layers of steel bars are implanted between the new concrete pavement layer and the concrete pavement layer in the existing pavement structure every 40-80 cm along the length direction of the groove; and half of the length of the steel bars are implanted in the new concrete pavement layer and the concrete pavement layer in the existing pavement structure; the spacing between the two layers of steel bars is 10-15 cm.

[0011] In the above-mentioned road surface restoration structure of the pipeline groove, the first reinforcement material and the second reinforcement material are both glass fiber grids.

[0012] In the above-mentioned road surface restoration structure of the pipeline groove, the third reinforcing material and the fourth reinforcing material are both glass fiber grids.

[0013] The road surface restoration structure of the pipeline groove of the utility model is characterized by:

[0014] 1. By expanding the upper pavement structure layer by 1 / 2L on both sides of the lower pavement structure layer, and then expanding the upper pavement structure layer in turn, the new pavement structure layer can be fully overlapped with the old pavement structure layer layer by layer, further improving the overlap quality of the new and old pavement structure layers;

[0015] 2. By expanding 1 / 2L on both sides of the previous pavement structure layer and then laying reinforcing materials with a width of L, the connection between the new and old roadbeds is strengthened, the previous pavement structure layer is reinforced in terms of tensile and bending resistance, the strength of the pavement structure layer is further improved, and the quality of pavement restoration and use is enhanced.

[0016] 3. By implanting steel bars between the new and old concrete pavement layers, the connection quality of the new and old concrete pavement layers is strengthened. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of a road surface restoration structure of a pipeline groove of the utility model;

[0018] Figure 2 It is a cross-sectional view of another road surface restoration structure of a pipeline groove of the utility model. DETAILED DESCRIPTION

[0019] The utility model will be further described below in conjunction with the accompanying drawings.

[0020] See also Figure 1 The road surface restoration structure of the pipeline groove of the utility model comprises backfill sand (not shown) filled on both sides and top of the pipeline in the pipeline groove, a new road base layer 1 laid on the backfill sand, and a new road surface structure layer laid on the new road base layer 1; the new road surface structure layer comprises a new road surface base layer 2 and a new concrete road surface layer 3 (see Figure 1 ).

[0021] The top elevation of the new road base 1 is the same as the top elevation of the road base in the existing pavement structure 100. A layer of first reinforcing material 10 with a width of L is laid on both sides of the top surface of the new road base 1, and the first reinforcing material 10 on both sides is laid in a manner of expanding 1 / 2L outwards to both sides of the new road base 2.

[0022] The new pavement base 2 is laid on the top surface of the new road base 1 and on the top surface of the first reinforcing material 10 on both sides of the top surface of the new road base 1. The thickness of the new pavement base 2 is the same as the thickness of the pavement base in the existing pavement structure 100. A layer of second reinforcing material 20 with a width of L is laid on both sides of the top surface of the new pavement base 2, and the second reinforcing material 20 on both sides is laid in a manner of expanding 1 / 2L outward to both sides of the new pavement base 2.

[0023] The new concrete pavement layer 3 is laid on the top surface of the new pavement base layer 2 and the top surface of the second reinforcing material 20 on both sides of the top surface of the new pavement base layer 2. The thickness of the new concrete pavement layer 3 is the same as the thickness of the concrete pavement layer in the existing pavement structure 100. When the thickness of the original concrete pavement layer is 15-35 cm, a layer of steel bars 31 is implanted between the middle of the thickness of the new concrete pavement layer 3 and the middle of the thickness of the concrete pavement layer in the existing pavement structure 100 every 40-80 cm along the length direction of the groove, and half the length of the steel bars 31 is implanted in the new concrete pavement layer 3 and the concrete pavement layer in the existing pavement structure 100; when the thickness of the original concrete pavement layer is greater than 35 cm, two layers of steel bars 31 are implanted between the new concrete pavement layer 3 and the concrete pavement layer in the existing pavement structure 100 every 40-80 cm along the length direction of the groove, and half the length of the steel bars 31 is implanted in the new concrete pavement layer 3 and the concrete pavement layer in the existing pavement structure 100; the spacing between the two layers of steel bars 31 is 10-15 cm; the length of the steel bars 31 is 50-70 cm.

[0024] When the existing pavement structure 100 also includes a lower asphalt structure layer and an upper asphalt structure layer, the new pavement structure layer includes a new lower asphalt structure layer 4 and a new upper asphalt structure layer 5 (see Figure 2 ); a third reinforcing material 30 having a width of L is laid on each side of the top surface of the new concrete pavement layer 3, and the third reinforcing material 30 on both sides of the new concrete pavement layer 3 is laid in a manner of expanding 1 / 2L on both sides;

[0025] The new lower asphalt structural layer 4 is laid on the top surface of the new concrete pavement layer 3 and on the top surface of the third reinforcing material 30 on both sides of the top surface of the new concrete pavement layer 3. The thickness of the new lower asphalt structural layer 4 is the same as the thickness of the lower asphalt structural layer in the existing pavement structure 100. A layer of the fourth reinforcing material 40 with a width of L is laid on both sides of the top surface of the new lower asphalt structural layer 4, and the fourth reinforcing material 40 on both sides is laid in a manner of expanding 1 / 2L outward to both sides of the new lower asphalt structural layer 4.

[0026] The new upper asphalt structural layer 5 is laid on the top surface of the new lower asphalt structural layer 4 and the top surface of the fourth reinforcing material 40 on both sides of the top surface of the new lower asphalt structural layer 4. The thickness of the new upper asphalt structural layer 5 is the same as the thickness of the upper asphalt structural layer in the existing pavement structure 100.

[0027] The first reinforcing material 10 , the second reinforcing material 20 , the third reinforcing material 30 and the fourth reinforcing material 40 are all made of glass fiber grids, and the width L of the first reinforcing material 10 , the second reinforcing material 20 , the third reinforcing material 30 and the fourth reinforcing material 40 is 40-80 cm.

[0028] The pavement restoration structure of the pipeline groove of the utility model is constructed according to the following steps:

[0029] 1. First, step-type slopes are constructed on both sides of the groove. The tread width of each step is 1 / 2L. The step heights are, from bottom to top, the thickness of the road base layer, the thickness of the pavement base layer, the thickness of the concrete pavement, the thickness of the lower asphalt structure layer, and the thickness of the upper asphalt structure layer in the existing pavement structure 100;

[0030] 2. First, a new road base 1 is laid on the backfill sand in the groove, and then a first reinforcing material 10 with a width of L is laid on both sides of the top surface of the new road base 1, and half the width of the first reinforcing material 10 on both sides is laid on the road base in the existing pavement structure 100;

[0031] 3. First, a new road base 2 is laid on the top surface of the new road base 1 and the top surface of the first reinforcement material 10, and then a second reinforcement material 20 with a width of L is laid on both sides of the top surface of the new road base 2, and half the width of the second reinforcement material 20 on both sides is laid on the road base in the existing road structure 100;

[0032] 4. Before laying the new concrete pavement layer 3, firstly implant the steel bar 31 in the concrete pavement layer in the existing pavement structure 100, so that half of the length of the steel bar 31 is located in the concrete pavement layer in the existing pavement structure 100, and then lay the new concrete pavement layer 3 on the top surface of the new pavement base 2 and the top surface of the second reinforcing material 20, so that the other half of the length of the steel bar 31 is located in the new concrete pavement layer 3, and then lay the third reinforcing material 30 with a width of L on both sides of the top surface of the new concrete pavement layer 3; half of the width of the third reinforcing material 30 on both sides is laid on the concrete pavement layer in the existing pavement structure 100;

[0033] 5. First, a new lower asphalt structure layer 4 is laid on the top surface of the new concrete pavement layer 3 and the top surface of the third reinforcing material 30, and then a fourth reinforcing material 40 with a width of L is laid on both sides of the top surface of the new lower asphalt structure layer 4; half the width of the fourth reinforcing material 40 on both sides is laid on the lower asphalt structure layer in the existing pavement structure 100;

[0034] 6. Lay a new upper asphalt structure layer 5 on the top surface of the new lower asphalt structure layer 4 and the top surface of the fourth reinforcing material 40 .

[0035] The pavement restoration structure of the pipeline groove of the utility model can effectively avoid quality problems existing between the new and old pavements of the pipeline groove.

[0036] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Technicians in the relevant technical field can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. A pipeline trench pavement restoration structure, comprising backfill sand filled on both sides and top of the pipeline in the pipeline trench, a new road base layer laid on the backfill sand, and a new road surface structure layer laid on the new road base layer; the new road surface structure layer comprises a new road base layer and a new concrete road surface layer, characterized in that: The top surface elevation of the new road base is the same as the top surface elevation of the road base in the existing pavement structure, and a layer of first reinforcing material with a width of L is laid on both sides of the top surface of the new road base, and the first reinforcing material on both sides is laid in a manner of expanding 1 / 2L outwards to both sides of the new road base; The new pavement base is laid on the top surface of the new road base and on the top surface of the first reinforcing material on both sides of the top surface of the new road base, and the thickness of the new road base is the same as the thickness of the road base in the existing pavement structure; a layer of second reinforcing material with a width of L is laid on both sides of the top surface of the new road base, and the second reinforcing materials on both sides are laid in a manner of expanding 1 / 2L outwards to both sides of the new road base; The new concrete pavement layer is laid on the top surface of the new pavement base and the top surface of the second reinforcing material on both sides of the top surface of the new pavement base. The thickness of the new concrete pavement layer is the same as the thickness of the concrete pavement layer in the existing pavement structure.

2. The pipeline groove pavement restoration structure according to claim 1, characterized in that: When the existing pavement structure also includes a lower asphalt structure layer and an upper asphalt structure layer, the new pavement structure layer includes a new lower asphalt structure layer and a new upper asphalt structure layer; a layer of third reinforcing material with a width of L is laid on both sides of the top surface of the new concrete pavement layer, and the third reinforcing material on both sides is laid in a manner of expanding 1 / 2L outwards to both sides of the new concrete pavement layer; The new lower asphalt structural layer is laid on the top surface of the new concrete pavement layer and on the top surface of the third reinforcing material on both sides of the top surface of the new concrete pavement layer. The thickness of the new lower asphalt structure is the same as the thickness of the lower asphalt structural layer in the existing pavement structure. A layer of fourth reinforcing material with a width of L is laid on both sides of the top surface of the new lower asphalt structural layer, and the fourth reinforcing materials on both sides are laid in a manner of expanding 1 / 2L outward to both sides of the new lower asphalt structural layer; the new upper asphalt structural layer is laid on the top surface of the new lower asphalt structural layer and on the top surface of the fourth reinforcing material on both sides of the top surface of the new lower asphalt structural layer. The thickness of the new upper asphalt structure is the same as the thickness of the upper asphalt structural layer in the existing pavement structure.

3. The pipeline groove pavement restoration structure according to claim 1, characterized in that: When the thickness of the concrete pavement layer in the existing pavement structure is 15 to 35 cm, a layer of steel bars is implanted between the middle of the thickness of the new concrete pavement layer and the middle of the thickness of the concrete pavement layer in the existing pavement structure every 40 to 80 cm along the length direction of the groove, and half the length of the steel bars are implanted in the new concrete pavement layer and the concrete pavement layer in the existing pavement structure; when the thickness of the concrete pavement layer in the existing pavement structure is greater than 35 cm, two layers of steel bars are implanted between the new concrete pavement layer and the concrete pavement layer in the existing pavement structure every 40 to 80 cm along the length direction of the groove, and half the length of the steel bars are implanted in the new concrete pavement layer and the concrete pavement layer in the existing pavement structure; the spacing between the two layers of steel bars is 10 to 15 cm.

4. The pipeline groove pavement restoration structure according to claim 1, characterized in that: The first reinforcement material and the second reinforcement material are both glass fiber grids.

5. The pipeline groove pavement restoration structure according to claim 2, characterized in that: The third reinforcing material and the fourth reinforcing material are both made of glass fiber grids.

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