A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method for high-underground-water-level low-filling shallow-digging silty-fine sand soil roadbed
The invention discloses a construction method of a high-underground-water-level low-filling shallow-digging silty-fine sand soil roadbed, which comprises a drainage cushion layer and a curing layer positioned above the drainage cushion layer, the curing layer is formed by stirring silty-fine sand and a curing agent, the drainage cushion layer is arranged at the bottom of the curing layer, and foundation soil is excavated to the bottom surface of a roadbed bed; constructing reinforced concrete piles on the bottom surface of the subgrade foundation bed; pouring a reinforced concrete raft; pouring the bearing plate; the two sides of the reinforced concrete raft plate and the bearing plate are backfilled with water seepage soil; starting to fill a foundation bed filler layer on the upper end surface of the bearing plate; a drainage ditch is constructed on the side, away from the roadbed, of the water-permeable soil, the drainage ditch and the water-permeable soil are communicated, and underground water below and on the two sides of the reinforced concrete raft plate is drained to enable the filler on the bearing plate to be in a dry state. According to the roadbed structure, the pile and raft overall structure is fully integrated and utilized, filler replacement and drainage height limitation are achieved, and the risk that expansive soil swells and arches under the water saturation effect and the mud pumping damage of a foundation bed are successfully avoided.
本发明公开了一种高地下水位低填浅挖粉细砂土路基施工方法，包括排水垫层和位于排水垫层上方的固化层，固化层通过粉细砂和固化剂搅拌而成，并在其底部设置排水垫层，挖除地基土至路基基床底面；在路基基床底面施工钢筋混凝土桩；浇筑钢筋混凝土筏板；浇筑承载板；在钢筋混凝土筏板以及承载板两侧回填渗水土；于承载板的上端面开始填筑基床填料层；在渗水土远离路基的一侧地基上施工排水沟，连通排水沟与渗水土，排放钢筋混凝土筏板下方以及两侧的地下水使承载板上的填料处于干燥状态。本发明的路基结构充分整合利用桩及筏板整体结构、填料置换及排水限高，成功解决了膨胀土受饱水作用膨胀上拱风险和基床的翻浆冒泥病害。
Construction method for high-underground-water-level low-filling shallow-digging silty-fine sand soil roadbed
The invention discloses a construction method of a high-underground-water-level low-filling shallow-digging silty-fine sand soil roadbed, which comprises a drainage cushion layer and a curing layer positioned above the drainage cushion layer, the curing layer is formed by stirring silty-fine sand and a curing agent, the drainage cushion layer is arranged at the bottom of the curing layer, and foundation soil is excavated to the bottom surface of a roadbed bed; constructing reinforced concrete piles on the bottom surface of the subgrade foundation bed; pouring a reinforced concrete raft; pouring the bearing plate; the two sides of the reinforced concrete raft plate and the bearing plate are backfilled with water seepage soil; starting to fill a foundation bed filler layer on the upper end surface of the bearing plate; a drainage ditch is constructed on the side, away from the roadbed, of the water-permeable soil, the drainage ditch and the water-permeable soil are communicated, and underground water below and on the two sides of the reinforced concrete raft plate is drained to enable the filler on the bearing plate to be in a dry state. According to the roadbed structure, the pile and raft overall structure is fully integrated and utilized, filler replacement and drainage height limitation are achieved, and the risk that expansive soil swells and arches under the water saturation effect and the mud pumping damage of a foundation bed are successfully avoided.
本发明公开了一种高地下水位低填浅挖粉细砂土路基施工方法，包括排水垫层和位于排水垫层上方的固化层，固化层通过粉细砂和固化剂搅拌而成，并在其底部设置排水垫层，挖除地基土至路基基床底面；在路基基床底面施工钢筋混凝土桩；浇筑钢筋混凝土筏板；浇筑承载板；在钢筋混凝土筏板以及承载板两侧回填渗水土；于承载板的上端面开始填筑基床填料层；在渗水土远离路基的一侧地基上施工排水沟，连通排水沟与渗水土，排放钢筋混凝土筏板下方以及两侧的地下水使承载板上的填料处于干燥状态。本发明的路基结构充分整合利用桩及筏板整体结构、填料置换及排水限高，成功解决了膨胀土受饱水作用膨胀上拱风险和基床的翻浆冒泥病害。
Construction method for high-underground-water-level low-filling shallow-digging silty-fine sand soil roadbed
一种高地下水位低填浅挖粉细砂土路基施工方法
XIE RUNZE (author) / HE HONGWEI (author) / KANG HEE-DONG (author) / NING SHIKAI (author) / SHANG NAIWEI (author) / SHUI XUEFENG (author) / KO SUNG-IN (author) / ZHANG JUN (author) / LI BIN (author) / JIANG BO (author)
2023-04-11
Patent
Electronic Resource
Chinese
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