CN201433346Y - Stress absorption band - Google Patents
Stress absorption band Download PDFInfo
- Publication number
- CN201433346Y CN201433346Y CN2009201034565U CN200920103456U CN201433346Y CN 201433346 Y CN201433346 Y CN 201433346Y CN 2009201034565 U CN2009201034565 U CN 2009201034565U CN 200920103456 U CN200920103456 U CN 200920103456U CN 201433346 Y CN201433346 Y CN 201433346Y
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- absorption band
- stress absorption
- new
- stress
- road
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Abstract
The utility model discloses a stress absorption band, wherein a stress absorption band (3) is arranged at the joint of a new road (2) and an old road (1), that is, below the position from the top surface of a roadbed to a new-laid oil surface, the stress absorption band (3) is designed as an inverted trapezoidal inverted triangular groove, and the groove is filled with asphalt macadams or modifiedasphalt macadams. The stress absorption band is arranged at the joint of the new road and the old road, so that the stress can be absorbed and reduced, and the road surface distress caused by the stress effect at the joint of the new road and the old road is prevented.
Description
Technical field
The utility model relates to the connecting structure on new and old road in a kind of old road reorganization and expansion, the stress absorption band of especially new, old road seam areas.
Background technology
Continuous development along with transport development, reorganization and expansion is carried out on a large amount of old roads, a lot of diseases often appear in mating formation of the combination on new and old road, road surface, wherein modal disease is, newly, the seam crossing on old road produces longitudinal joint, be full of cracks, it forms reason and comprises: sedimentation has been finished or has been finished substantially on (1) old road, certainly leads to different settling amounts between the new and old road, forms the crack; (2) owing to factors such as pollute on road surface in the construction, construction machinery is not easy to operate, seam crossing becomes the quality weak location, easily produces and ftractures; (3) driving effect, vibration cause the cracking of seam crossing.As untimely regulation, rainwater and other pollutant may infiltrate roadbed along the slit, cause the road surface to be damaged in early days, cause the road surface bearing capacity to reduce, cause crack increasing and road structure heavy damage, thereby greatly influence the traffic capacity of road and shorten service life of road surface.This just demands exploring the connecting structure of a kind of new, old road junction urgently, to solve the pavement disease after the reorganization and expansion of old road.
Summary of the invention
The purpose of this utility model is exactly in order to overcome the above problems, the stress absorption band of a kind of new, old road seam areas is provided, this stress absorption band is arranged on newly, the Jiu Lu junction, can absorb and subdue stress, prevents the junction stress effect of new, old road and the pavement disease that produces.
The technical scheme of stress absorption band of the present utility model is, new, old highway seam areas go to a grassroots level or basic unit on be provided with stress absorption band, stress absorption band is made as down trapezoidal or the del groove, has filled asphalt macadam or modified asphalt macadam in the groove.
Stress absorption band of the present utility model further improves and is:
The inclined angle alpha on the inclined-plane that trapezoidal or del groove and new, old road join of falling is 15 °-45 °.
Asphalt macadam that fills in the groove or modified asphalt macadam are placement in layers, and every layer thickness is less than 10cm.
Above stress absorption band, be equipped with and the new identical bituminous concrete of top course.
Above stress absorption band, be provided with geosynthetics and new surface layer from top to bottom successively.
Geosynthetics and new surface layer all are made as twice.
Geosynthetics prolongs the shop width and is not less than 50cm in stress absorption with groove 3 outsides suitable for reading.
The utility model stress absorption band is new during old road is widened, the disposal method of old road junction, be to be the roadbed top to the stress absorption band that is provided with trapezoidal or del groove below the pasta of new shop in seam areas, it is as a longitudinal modulus of elasticity intermediate zone, it is new to adopt asphalt macadam or modified asphalt macadam to handle, the vertical joint portion of old structure layer, asphalt macadam deck resistance to compression is stronger, self and load-bearing distortional stress of two kinds of road structures absorb to dissipate, prevent new, the old structure layer produces failure stress because of stress deformation is different, thereby prevents the road surface longitudinal cracking.Because asphalt macadam has flexibility, can whole combine coordination stressed with the less old line structure layer of modulus of elasticity; Utilize inclined-plane and asphalt macadam trapezoidal or the del groove to have the stronger effect of resistance to compression simultaneously, road surface structare layers such as cement stabilizing that can be different with modulus of elasticity broken (gravel) stone, two-ash broken stones, graded broken stone, bituminous concrete, cement stabilizing bed course squeeze the inclined-plane in conjunction with forming embedding, absorb each side's stress.In addition, between stress absorption band and new surface layer, be provided with geosynthetics, can make the stress of horizontal direction extend to wider by geosynthetics, thereby the stress of alleviating seam crossing is concentrated, play the effect of absorption portion tensile energy, effectively improve the road structure stress distribution, simultaneously, also reduced the adhesion between surface layer and basic unit, thereby the maximum stretching strain of surface layer is also reduced.The connecting structure of the new and old road of the utility model junction can solve the pavement disease after the reorganization and expansion of old road, effectively improves the road surface functional performance, prolongs service life of road surface, reduces later stage highway maintenance cost.
Description of drawings
Fig. 1 is the structural representation of the utility model stress absorption band.
Fig. 2 is the another kind of structural representation of the utility model stress absorption band.
The specific embodiment
The utility model is, and to be the roadbed top in new, old highway seam areas be provided with stress absorption band to the pasta of new shop, and stress absorption band is made as down trapezoidal or the del groove, has filled asphalt macadam or modified asphalt macadam in the groove.As shown in Figure 1, old pavement deck 1 becomes the inclined-plane 11 that becomes 15 ° of-45 ° of angle α with the rip cutting vertical plane along pavement edge longitudinal slicing or making, and the degree of depth is until newly paving the way 2 go to a grassroots level or roadbed end face absolute altitude 4; Equally, green road surface deck and old road 1 connect batch position, and also making or slicing become the inclined-plane 21 that becomes 15 ° of-45 ° of angles with vertical plane, new like this, old pavement 11,21 junction form falls trapezoidal or del groove 3 is stress absorption band 3, has filled asphalt macadam or modified asphalt macadam in the groove 3.Utilize the inclined-plane and the asphalt macadam of trapezoidal or del groove, form embedding and squeeze the inclined-plane, absorb each side's stress.Asphalt macadam that fills in the groove or modified asphalt macadam are placement in layers, and every layer thickness is controlled at 10cm and is advisable with interior.Can be equipped with geosynthetics 6 stress absorption band 3 and new, connecing on batch position of old pavement, geosynthetics 6 can adopt glass fiber net, geosynthetics 6 is not less than 50cm at the best Yan Pu in stress absorption with groove 3 outsides suitable for reading, be the geosynthetics width should be down trapezoidal or del absorption band width suitable for reading each extends and to be not less than 50cm to both sides again, making and the new identical bituminous concrete 5 of top course above this.
As shown in Figure 1, be the utility model for the construction requirement design document be the structure during the new road surface of making one deck on the old pavement, promptly connect a batch position and be provided with a slicing layer 12 at former old pavement, slicing thickness with newly widen surface layer 51 consistency of thickness in the road surface, the slicing width is not less than 100cm; First floor geosynthetics 6 for laying on this slicing layer 12 and stress absorption with groove 3 is surface layer 51 in the bituminous concrete on it; Being again one deck geosynthetics 6 upwards again, is bituminous concrete upper layer 52 topmost.
As shown in Figure 2, be the utility model for the construction requirement design document be the structure of old pavement when not overlaying new road surface, promptly be provided with two slicing layers 12,13 along joint part at former old pavement, and form and to be not less than the wide step of 50cm, slicing thickness respectively with new black top rigid pavement in, upper layer 51,52 consistency of thickness; Each slicing layer and stress absorption with groove 3 tops all are equipped with one deck geosynthetics 6 and asphalt concrete pavement 5.
Claims (7)
1, a kind of stress absorption band, it is characterized in that: the seam areas of new, old highway (2,1) go to a grassroots level or basic unit on be provided with stress absorption band (3), stress absorption band (3) is made as down trapezoidal or the del groove, has filled asphalt macadam or modified asphalt macadam in the groove.
2, stress absorption band according to claim 1 is characterized in that: described inclined angle alpha of falling the inclined-plane (21,11) that trapezoidal or del groove and new, old road join is 15 °-45 °.
3, stress absorption band according to claim 1 and 2 is characterized in that: asphalt macadam that fills in the described groove or modified asphalt macadam are placement in layers, and every layer thickness is less than 10cm.
4, stress absorption band according to claim 1 and 2 is characterized in that: the top making at stress absorption band (3) has and the new identical bituminous concrete (5) of top course.
5, stress absorption band according to claim 1 and 2 is characterized in that: be provided with geosynthetics (6) and new surface layer (5) from top to bottom successively in the top of stress absorption band (3).
6, stress absorption band according to claim 5 is characterized in that: described geosynthetics (6) and new surface layer (5) all are made as twice.
7, stress absorption band according to claim 5 is characterized in that: described geosynthetics (6) prolongs the shop width and is not less than 50cm in stress absorption band (3) the groove outside suitable for reading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201034565U CN201433346Y (en) | 2009-06-29 | 2009-06-29 | Stress absorption band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201034565U CN201433346Y (en) | 2009-06-29 | 2009-06-29 | Stress absorption band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201433346Y true CN201433346Y (en) | 2010-03-31 |
Family
ID=42052156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201034565U Expired - Lifetime CN201433346Y (en) | 2009-06-29 | 2009-06-29 | Stress absorption band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201433346Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677568A (en) * | 2012-04-28 | 2012-09-19 | 邢台路桥建设总公司 | Method for reasonably controlling thickness of stress absorbing layer of pavement in area |
-
2009
- 2009-06-29 CN CN2009201034565U patent/CN201433346Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677568A (en) * | 2012-04-28 | 2012-09-19 | 邢台路桥建设总公司 | Method for reasonably controlling thickness of stress absorbing layer of pavement in area |
| CN102677568B (en) * | 2012-04-28 | 2014-05-21 | 邢台路桥建设总公司 | Method for reasonably controlling thickness of stress absorbing layer of pavement in area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XINGTAI BRIDGE AND ROAD CONSTRUCTION GENERAL CO. Free format text: FORMER OWNER: XINGTAI ROAD AND BRIDGE CONSTRUCTION GENERAL CO. Effective date: 20140529 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140529 Address after: 054001, 79 Qiao Road, Qiaodong District, Hebei, Xingtai Patentee after: Xingtai Bridge and Road Construction General Co. Address before: 054001, 79 Qiao Road, Qiaodong District, Hebei, Xingtai Patentee before: Xingtai Road and Bridge Construction General Co. |
|
| ASS | Succession or assignment of patent right |
Owner name: XINGTAI ROAD AND BRIDGE CONSTRUCTION GENERAL CO. Free format text: FORMER OWNER: XINGTAI BRIDGE AND ROAD CONSTRUCTION GENERAL CO. Effective date: 20140828 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140828 Address after: 054001, 79 Qiao Road, Qiaodong District, Hebei, Xingtai Patentee after: Xingtai Road and Bridge Construction General Co. Address before: 054001, 79 Qiao Road, Qiaodong District, Hebei, Xingtai Patentee before: Xingtai Bridge and Road Construction General Co. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100331 |