Stress absorption band and construction method thereof

A technology of stress absorption zone and construction method, which is applied to roads, pavement details, roads, etc., can solve the problems of shortening the service life of the road surface, affecting the road traffic capacity, reducing the bearing capacity of the road surface, etc., so as to prolong the service life and reduce the maintenance cost of the road. , the effect of improving performance

Active Publication Date: 2009-12-02
XINGTAI ROAD & BRIDGE CONSTR GENERAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is not treated in time, rainwater and other pollutants may seep into the roadbed along the gaps, resulting in early damage to the road surface, resulting in a reduction in the bearing capacity of the road surface, causing cracks to increase and serious damage to the road surface structure, thereby greatly affecting the traffic capacity of the road and shortening the service life of the road surface

Method used

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  • Stress absorption band and construction method thereof
  • Stress absorption band and construction method thereof

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Experimental program
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Effect test

Embodiment 1

[0030] (1) The old pavement structure layer 1 is sliced ​​or paved longitudinally along the edge of the pavement (strength that can meet the specification requirements) into an inclined plane 11 at an angle α of 15°-45° to the vertical plane of the longitudinal cut, and the depth reaches the new pavement 2 Elevation 4 of the lower base or roadbed top surface; Similarly, the newly paved pavement structure layer and the stubble position of the old road 1 are also paved or sliced ​​into an inclined plane 21 with an angle of 15°-45° with the vertical plane, so that the new and old pavement 11, 21 joints form an inverted trapezoidal or inverted triangular groove 3;

[0031] (2) Clean up the inverted trapezoidal or inverted triangular groove 3 (with a bottom width of 3 cm or more) formed by the above-mentioned new and old roads, spray the penetrating oil, and then fill the groove 3 with asphalt gravel or modified asphalt gravel , requiring layered treatment, each layer thickness is ...

Embodiment 2

[0034] Step (1), (2) are with embodiment 1;

[0035] Step (3): Lay the geosynthetic material 6 on the stubble position between the stress absorbing zone 3 after the rolling in steps (1) and (2) and the new and old road surfaces, and the geosynthetic material 6 is on the top of the stress absorbing zone groove 3 The outer pavement should not be less than 50cm, that is, the width of the geosynthetic material should be the width of the upper opening of the inverted trapezoidal or inverted triangular absorption belt, and then extend to both sides of the width of not less than 50cm, and then pave the same asphalt concrete 5 as the new pavement surface layer, and use a road roller Compact until the compactness required by the design is reached.

Embodiment 3

[0037] Such as figure 1 As shown, the present embodiment is the construction method when the construction requirement design document is to pave a layer of new road surface on the old road surface:

[0038] Step (1), (2) are with embodiment 1;

[0039] Step (3):

[0040] a) Slicing a layer 12 of the original old road surface stubble part, the slicing thickness should be consistent with the thickness of the surface layer 51 in the newly widened road surface, and the slicing width should not be less than 100cm;

[0041] b) Laying geosynthetics 6 at the stubble position between the stress absorbing zone 3 and the new and old road surface after step (1) and (2) rolling, the geosynthetics 6 can be made of glass fiber mesh, and the geosynthetics 6 is under stress The outer side of the upper opening of the absorption belt groove 3 is not less than 50cm, that is, the width of the geosynthetic material should be an inverted trapezoidal or inverted triangular absorption belt, and the ...

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Abstract

The invention discloses a stress absorption band and a construction method thereof. The stress absorption band (3) is arranged at the joint part of a new road (2) and an old road (1), namely from the top surface of a roadbed to the underside of a newly paved oil surface, the stress absorption band (3) is arranged into an inverse trapezoid or an inverse triangular groove, and the groove is filled with asphalt macadam or modified asphalt macadam. The invention also discloses the construction method for the stress absorption band. The stress absorption band (3) is arranged at the joint part of the new road and the old road, can absorb and reduce stress, and prevent road surface diseases caused by the stress at the joint part of the new road and the old road.

Description

technical field [0001] The invention relates to a connection structure of old and new roads in reconstruction and extension of old roads and a construction method thereof, in particular to a stress-absorbing zone at the joint of the new and old roads and a construction method thereof. Background technique [0002] With the continuous development of traffic construction, a large number of old roads have been rebuilt and expanded. The combination of new and old roads and the pavement of the road surface often have many diseases. Among them, the most common diseases are longitudinal joints, turtles, etc. The reasons for the formation of cracks include: (1) The settlement of the old road has been completed or basically completed, and there must be different settlements between the old and new roads, forming cracks; (2) Due to factors such as road pollution during construction and difficult operation of construction machinery, The seam becomes the weak position of quality, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C11/02
Inventor 李来宾
Owner XINGTAI ROAD & BRIDGE CONSTR GENERAL
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