交通科技
交通科技
교통과기
TRANSPORTATION SCIENCE & TECHNOLOGY
2015年
3期
77-79,80
,共4页
道路工程%沥青路面%裂缝%基层%长期性能
道路工程%瀝青路麵%裂縫%基層%長期性能
도로공정%력청로면%렬봉%기층%장기성능
road engineering%asphalt pavement%cracks%base%long-term performance
为探讨基层类型对沥青路面裂缝长期发展规律的影响，针对山西某高速公路3种基层类型（柔性基层、半刚性基层、刚性基层）、2种基层厚度（50，55 cm）的6段沥青路面试验路，于铺筑后连续4年、加铺后连续4年测定了路面裂缝数目和分布规律的发展情况。结果表明，半刚性基层沥青路面的裂缝数目、开裂面积及其发展速度均明显大于刚性和柔性基层；增加基层厚度可以减少半刚性基层沥青路面裂缝数目和开裂面积，但对于刚性基层和柔性基层路面作用有限；加铺后路面裂缝的发展规律与新建路面相似，加铺对于柔性基层路面意义更大。
為探討基層類型對瀝青路麵裂縫長期髮展規律的影響，針對山西某高速公路3種基層類型（柔性基層、半剛性基層、剛性基層）、2種基層厚度（50，55 cm）的6段瀝青路麵試驗路，于鋪築後連續4年、加鋪後連續4年測定瞭路麵裂縫數目和分佈規律的髮展情況。結果錶明，半剛性基層瀝青路麵的裂縫數目、開裂麵積及其髮展速度均明顯大于剛性和柔性基層；增加基層厚度可以減少半剛性基層瀝青路麵裂縫數目和開裂麵積，但對于剛性基層和柔性基層路麵作用有限；加鋪後路麵裂縫的髮展規律與新建路麵相似，加鋪對于柔性基層路麵意義更大。
위탐토기층류형대력청로면렬봉장기발전규률적영향，침대산서모고속공로3충기층류형（유성기층、반강성기층、강성기층）、2충기층후도（50，55 cm）적6단력청로면시험로，우포축후련속4년、가포후련속4년측정료로면렬봉수목화분포규률적발전정황。결과표명，반강성기층력청로면적렬봉수목、개렬면적급기발전속도균명현대우강성화유성기층；증가기층후도가이감소반강성기층력청로면렬봉수목화개렬면적，단대우강성기층화유성기층로면작용유한；가포후로면렬봉적발전규률여신건로면상사，가포대우유성기층로면의의경대。
In order to determine the effect of base structures on cracks long-term development law of asphalt pavement,the number and distribution of cracks of six test freeways in Shanxi province were investigated.It contains three base types (flexible base,semi-rigid base and rigid base)and two base thicknesses (50cm and 55cm).The investigating time was four years after construction and four years after overlay.The results showed that:number,area and development speed of asphalt pavement with semi-rigid base were significantly bigger than pavement with flexible base and rigid base.In-creasing thickness of semi-rigid base can reduce the number and area of cracks,but it was limited for rigid and flexible base.Cracks development law of pavement after overlay was similar to new pave-ment.Overlay is more valuable for pavement with flexible base.
