A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Trepanning and repairing construction method for existing raft foundation
The invention relates to a reinforcing construction method for a raft foundation, in particular to a trepanning and repairing construction method for the existing raft foundation. The trepanning and repairing construction method for the existing raft foundation comprises the steps that A1, the existing raft foundation is surveyed, and the trepanning position and the aperture are determined; A2, concrete of the raft foundation is removed by adopting mechanical drilling within the range of 4/5 of the designed aperture until a plain concrete cushion of the raft foundation is completely exposed; A3, concrete of the raft foundation is manually removed within the range of 1/5 of the residual designed aperture, a reinforcing mesh of the existing raft foundation is exposed, the plain concrete cushion of the existing raft foundation is cleared and leveled, and the foundation reinforcement is completed; A4, the reinforcing design of the reinforcing mesh reinforcement connection in a hole is completed; A5, concrete which is higher than the strength grade of the concrete of the existing raft foundation and doped with an expanding agent is poured into the hole, vibrated and compacted; and A6, top laitance is removed to the top elevation of the existing raft foundation. According to the trepanning and repairing construction method for the existing raft foundation, the problem that the existing raft foundation is seriously damaged by existing manual chiseling, the overall effect is poor after the raft foundation is reinforced, and the cooperative work of the foundation reinforcement is not facilitated is solved.
本发明涉及筏板基础加固施工方法，具体为一种既有筏板基础开孔及修复施工方法，包括步骤：A1、对既有筏板基础进行勘测，确定开孔位置及孔径；A2、在设计孔径4/5范围内采用机械钻除筏板基础混凝土，直至完全暴露筏板基础底素混凝土垫层；A3、人工剔除剩余设计孔径1/5范围内筏板基础的混凝土，暴露既有筏板基础的钢筋网，清理整平既有筏板基础素混凝土垫层并完成地基加固；A4、完成孔内加固设计钢筋网配筋连接；A5、孔内浇注高于既有筏板基础混凝土强度等级且掺有膨胀剂的混凝土，并振捣密实；A6、清除顶部浮浆至既有筏板基础顶标高。本发明解决了现有人工凿除对既有筏板基础损害严重、筏板基础加固后整体效果差且不利于地基加固协同工作的问题。
Trepanning and repairing construction method for existing raft foundation
The invention relates to a reinforcing construction method for a raft foundation, in particular to a trepanning and repairing construction method for the existing raft foundation. The trepanning and repairing construction method for the existing raft foundation comprises the steps that A1, the existing raft foundation is surveyed, and the trepanning position and the aperture are determined; A2, concrete of the raft foundation is removed by adopting mechanical drilling within the range of 4/5 of the designed aperture until a plain concrete cushion of the raft foundation is completely exposed; A3, concrete of the raft foundation is manually removed within the range of 1/5 of the residual designed aperture, a reinforcing mesh of the existing raft foundation is exposed, the plain concrete cushion of the existing raft foundation is cleared and leveled, and the foundation reinforcement is completed; A4, the reinforcing design of the reinforcing mesh reinforcement connection in a hole is completed; A5, concrete which is higher than the strength grade of the concrete of the existing raft foundation and doped with an expanding agent is poured into the hole, vibrated and compacted; and A6, top laitance is removed to the top elevation of the existing raft foundation. According to the trepanning and repairing construction method for the existing raft foundation, the problem that the existing raft foundation is seriously damaged by existing manual chiseling, the overall effect is poor after the raft foundation is reinforced, and the cooperative work of the foundation reinforcement is not facilitated is solved.
本发明涉及筏板基础加固施工方法，具体为一种既有筏板基础开孔及修复施工方法，包括步骤：A1、对既有筏板基础进行勘测，确定开孔位置及孔径；A2、在设计孔径4/5范围内采用机械钻除筏板基础混凝土，直至完全暴露筏板基础底素混凝土垫层；A3、人工剔除剩余设计孔径1/5范围内筏板基础的混凝土，暴露既有筏板基础的钢筋网，清理整平既有筏板基础素混凝土垫层并完成地基加固；A4、完成孔内加固设计钢筋网配筋连接；A5、孔内浇注高于既有筏板基础混凝土强度等级且掺有膨胀剂的混凝土，并振捣密实；A6、清除顶部浮浆至既有筏板基础顶标高。本发明解决了现有人工凿除对既有筏板基础损害严重、筏板基础加固后整体效果差且不利于地基加固协同工作的问题。
Trepanning and repairing construction method for existing raft foundation
一种既有筏板基础开孔及修复施工方法
KANG JINGWEN (author) / YANG GUOQUAN (author) / HU JIANZONG (author) / PU JUN (author) / YANG SHE (author) / LIAO XIN (author) / YANG JUN (author) / DENG PAN (author) / JIN XIN (author) / YAN BIN (author)
2020-07-28
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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