A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Lower bearing layer semi-flexible pavement structure and construction method thereof
The invention discloses a lower bearing layer semi-flexible pavement structure and a construction method thereof, the lower bearing layer semi-flexible pavement structure comprises an original pavement structure, a grouting middle surface layer and an SMA asphalt mixture upper surface layer, the grouting middle surface layer and the SMA asphalt mixture upper surface layer are milled and planed on the original pavement structure, and a plurality of grouting holes are formed in the upper surface layer; during construction, a large-gap asphalt mixture middle surface layer is paved on an original pavement; paving an upper surface layer on the middle surface layer; when the upper surface layer is paved, plastic pipes are pre-buried or holes are drilled after the upper surface layer is paved; a grouting material is prepared and poured, the grouting material is poured into large gaps of the middle surface layer through a grouting pipe, and when grout emerges from adjacent holes, grouting continues and is stopped; after the pipe is pulled out, the hole opening is closed immediately, slurry overflowing out of the road surface is removed, the hole sealing material is taken out after initial setting, plugging and screeding are conducted, and it is ensured that the hole is filled compactly. According to the pavement structure, the upper layer asphalt mixture is directly paved on the large-gap asphalt pavement, so that the risk that the upper layer asphalt mixture and the large-gap asphalt pavement are poor in binding force after grouting and then paving, and the upper layer is easily lifted is avoided.
本发明公开了一种下承层半柔性路面结构及其施工方法，包括原路面结构，位于该原路面结构铣刨的灌浆中面层和SMA沥青混合料上面层，上面层中开设有若干灌浆孔；施工时在原路面上铺筑大空隙沥青混合料中面层；在中面层上铺筑上面层；在铺筑上面层时预埋塑料管或上面层铺筑好后钻孔；灌浆材料制备并灌注，将灌浆材料通过灌浆管注入中面层的大空隙中，当相邻孔有浆液冒出时，继续灌注一会停止灌注；拔管后立即封闭孔口，清除溢出路表的浆液，初凝后方取出封孔材料，并封堵抹平，确保孔内填充密实。该路面结构通过在大空隙沥青路面上直接摊铺上面层沥青混合料，避免了灌浆后再摊铺上面层沥青混合料两者粘结力差，容易造成上面层被掀起的风险。
Lower bearing layer semi-flexible pavement structure and construction method thereof
The invention discloses a lower bearing layer semi-flexible pavement structure and a construction method thereof, the lower bearing layer semi-flexible pavement structure comprises an original pavement structure, a grouting middle surface layer and an SMA asphalt mixture upper surface layer, the grouting middle surface layer and the SMA asphalt mixture upper surface layer are milled and planed on the original pavement structure, and a plurality of grouting holes are formed in the upper surface layer; during construction, a large-gap asphalt mixture middle surface layer is paved on an original pavement; paving an upper surface layer on the middle surface layer; when the upper surface layer is paved, plastic pipes are pre-buried or holes are drilled after the upper surface layer is paved; a grouting material is prepared and poured, the grouting material is poured into large gaps of the middle surface layer through a grouting pipe, and when grout emerges from adjacent holes, grouting continues and is stopped; after the pipe is pulled out, the hole opening is closed immediately, slurry overflowing out of the road surface is removed, the hole sealing material is taken out after initial setting, plugging and screeding are conducted, and it is ensured that the hole is filled compactly. According to the pavement structure, the upper layer asphalt mixture is directly paved on the large-gap asphalt pavement, so that the risk that the upper layer asphalt mixture and the large-gap asphalt pavement are poor in binding force after grouting and then paving, and the upper layer is easily lifted is avoided.
本发明公开了一种下承层半柔性路面结构及其施工方法，包括原路面结构，位于该原路面结构铣刨的灌浆中面层和SMA沥青混合料上面层，上面层中开设有若干灌浆孔；施工时在原路面上铺筑大空隙沥青混合料中面层；在中面层上铺筑上面层；在铺筑上面层时预埋塑料管或上面层铺筑好后钻孔；灌浆材料制备并灌注，将灌浆材料通过灌浆管注入中面层的大空隙中，当相邻孔有浆液冒出时，继续灌注一会停止灌注；拔管后立即封闭孔口，清除溢出路表的浆液，初凝后方取出封孔材料，并封堵抹平，确保孔内填充密实。该路面结构通过在大空隙沥青路面上直接摊铺上面层沥青混合料，避免了灌浆后再摊铺上面层沥青混合料两者粘结力差，容易造成上面层被掀起的风险。
Lower bearing layer semi-flexible pavement structure and construction method thereof
一种下承层半柔性路面结构及其施工方法
WANG WEIDONG (author) / ZHU DINGJUN (author) / WEI TANGZHONG (author) / ZHANG XIAOQIANG (author) / ZHOU JIANHUA (author)
2024-04-16
Patent
Electronic Resource
Chinese
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