A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Municipal road engineering new and old pavement splicing structure and construction method
The invention discloses a municipal road engineering new and old pavement splicing structure and a construction method, a first step, a second step, a third step and a fourth step are sequentially excavated on the splicing side of an old pavement from bottom to top, and the kicking surfaces of the first step, the second step and the third step are in butt joint with a subbase layer, a lower base layer and an upper base layer of a new pavement respectively; the lower layer of the fourth step kicking face is in butt joint with the asphalt lower face layer of the new pavement, the upper layer of the fourth step kicking face is in butt joint with the asphalt upper face layer of the new pavement, reinforcing meshes are longitudinally laid and fixed on the first step tread, a reinforcing steel bar framework is longitudinally laid on the second step tread, and pull rod reinforcing steel bars are longitudinally distributed and implanted in the third step kicking face. A geogrid is longitudinally laid and fixed on the third step tread, and the geogrid extends from the bottom end of the fourth step kicking surface and exceeds the position of the butt joint. According to the invention, the overall connectivity and crack resistance are improved, the possibility of roadbed settlement is reduced, the phenomenon of stress concentration at the edge of an old pavement structure is reduced, reflection cracks are effectively prevented, and the settlement of a base layer is resisted.
本发明公开了一种市政道路工程新旧路面拼接结构及施工方法，旧路面在拼接侧从下往上依次开挖有第一至第四台阶，第一至第三台阶的踢面分别与新路面的底基层、下基层和上基层对接，第四台阶踢面的下层与新路面的沥青下面层对接、上层与新路面的沥青上面层对接，第一台阶踏面纵向铺设固定有钢筋网片，第二台阶踏面纵向铺设有钢筋骨架，第三台阶踢面沿纵向分布植入有拉杆钢筋，第三台阶踏面纵向铺设固定有土工格栅，土工格栅从第四台阶踢面底端开始延伸并超出对接缝位置。本发明提高了整体连接性、抗裂性能，减小了路基沉降的可能性、旧路面结构边部应力集中现象，有效的防止了反射裂缝、抵抗基层沉降。
Municipal road engineering new and old pavement splicing structure and construction method
The invention discloses a municipal road engineering new and old pavement splicing structure and a construction method, a first step, a second step, a third step and a fourth step are sequentially excavated on the splicing side of an old pavement from bottom to top, and the kicking surfaces of the first step, the second step and the third step are in butt joint with a subbase layer, a lower base layer and an upper base layer of a new pavement respectively; the lower layer of the fourth step kicking face is in butt joint with the asphalt lower face layer of the new pavement, the upper layer of the fourth step kicking face is in butt joint with the asphalt upper face layer of the new pavement, reinforcing meshes are longitudinally laid and fixed on the first step tread, a reinforcing steel bar framework is longitudinally laid on the second step tread, and pull rod reinforcing steel bars are longitudinally distributed and implanted in the third step kicking face. A geogrid is longitudinally laid and fixed on the third step tread, and the geogrid extends from the bottom end of the fourth step kicking surface and exceeds the position of the butt joint. According to the invention, the overall connectivity and crack resistance are improved, the possibility of roadbed settlement is reduced, the phenomenon of stress concentration at the edge of an old pavement structure is reduced, reflection cracks are effectively prevented, and the settlement of a base layer is resisted.
本发明公开了一种市政道路工程新旧路面拼接结构及施工方法，旧路面在拼接侧从下往上依次开挖有第一至第四台阶，第一至第三台阶的踢面分别与新路面的底基层、下基层和上基层对接，第四台阶踢面的下层与新路面的沥青下面层对接、上层与新路面的沥青上面层对接，第一台阶踏面纵向铺设固定有钢筋网片，第二台阶踏面纵向铺设有钢筋骨架，第三台阶踢面沿纵向分布植入有拉杆钢筋，第三台阶踏面纵向铺设固定有土工格栅，土工格栅从第四台阶踢面底端开始延伸并超出对接缝位置。本发明提高了整体连接性、抗裂性能，减小了路基沉降的可能性、旧路面结构边部应力集中现象，有效的防止了反射裂缝、抵抗基层沉降。
Municipal road engineering new and old pavement splicing structure and construction method
市政道路工程新旧路面拼接结构及施工方法
LIU JINGUO (author) / YAN YAHUI (author) / YANG JIE (author) / MA QIANG (author) / ZHAO YONGHONG (author)
2023-04-04
Patent
Electronic Resource
Chinese
IPC:
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
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