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A platform for research: civil engineering, architecture and urbanism
Construction process of hard rock stratum pile foundation
The invention relates to the field of pile foundations, and particularly discloses a hard rock stratum pile foundation construction process which comprises the following steps: S1, pile foundation protection; s2, drilling holes in a soil layer; s3, inclined rock surface detection: collecting vertical displacement data when the probe rod moves around the inner wall of the steel casing; s4, inclined rock surface data simulation is carried out, a point when the probe rod is lowered to abut against the inclined rock surface is set as an original point, the rotation angle of the probe rod along the inner wall of the steel casing is used as a horizontal coordinate, the moving stroke of the probe rod in the vertical direction is used as a vertical coordinate, and a coordinate graph used for displaying an inclined rock surface angular curve is drawn; s5, the inclined rock stratum is cut, a milling drill bit is put down, and an arc groove in the trend of the inner wall of the steel casing is milled in the slope top of the inclined rock stratum in a layer-by-layer downward probing mode according to the inclined rock face angle curve in the step S4; s6, hole forming is conducted, specifically, a cone hollow cylinder drill is put down and embedded into the arc groove, the cone hollow cylinder drill is drilled into the bearing stratum with the designed elevation, and a rock core is taken out; and S7, pile forming. The drill bit has the effect of being not prone to eccentricity when drilling and crossing a slope rock surface.
本申请涉及桩基领域，具体公开了一种坚石岩层桩基施工工艺，其包括以下步骤：S1.桩基防护；S2.土层钻孔；S3.倾斜岩面探测，采集探杆环绕钢护筒内壁移动时的竖直位移数据；S4.倾斜岩面数据模拟，将探杆下放至抵紧斜岩层面时的点定为原点，以探杆沿钢护筒内壁转动角度为横坐标，以探杆在竖直方向上的移动行程为纵坐标，绘制用于展示倾斜岩面角位曲线的坐标图；S5.倾斜岩层切削，下放铣切钻头，根据步骤S4中的倾斜岩面角位曲线，在倾斜岩层的坡顶处以逐层下探的形式铣切出沿钢护筒内壁走向的弧槽；S6.成孔，下放牙轮空心筒钻并嵌入弧槽中，通过牙轮空心筒钻入设计标高持力层，并取岩芯；S7.成桩。本申请具有钻探穿越斜坡岩面时不易偏心的效果。
Construction process of hard rock stratum pile foundation
The invention relates to the field of pile foundations, and particularly discloses a hard rock stratum pile foundation construction process which comprises the following steps: S1, pile foundation protection; s2, drilling holes in a soil layer; s3, inclined rock surface detection: collecting vertical displacement data when the probe rod moves around the inner wall of the steel casing; s4, inclined rock surface data simulation is carried out, a point when the probe rod is lowered to abut against the inclined rock surface is set as an original point, the rotation angle of the probe rod along the inner wall of the steel casing is used as a horizontal coordinate, the moving stroke of the probe rod in the vertical direction is used as a vertical coordinate, and a coordinate graph used for displaying an inclined rock surface angular curve is drawn; s5, the inclined rock stratum is cut, a milling drill bit is put down, and an arc groove in the trend of the inner wall of the steel casing is milled in the slope top of the inclined rock stratum in a layer-by-layer downward probing mode according to the inclined rock face angle curve in the step S4; s6, hole forming is conducted, specifically, a cone hollow cylinder drill is put down and embedded into the arc groove, the cone hollow cylinder drill is drilled into the bearing stratum with the designed elevation, and a rock core is taken out; and S7, pile forming. The drill bit has the effect of being not prone to eccentricity when drilling and crossing a slope rock surface.
本申请涉及桩基领域，具体公开了一种坚石岩层桩基施工工艺，其包括以下步骤：S1.桩基防护；S2.土层钻孔；S3.倾斜岩面探测，采集探杆环绕钢护筒内壁移动时的竖直位移数据；S4.倾斜岩面数据模拟，将探杆下放至抵紧斜岩层面时的点定为原点，以探杆沿钢护筒内壁转动角度为横坐标，以探杆在竖直方向上的移动行程为纵坐标，绘制用于展示倾斜岩面角位曲线的坐标图；S5.倾斜岩层切削，下放铣切钻头，根据步骤S4中的倾斜岩面角位曲线，在倾斜岩层的坡顶处以逐层下探的形式铣切出沿钢护筒内壁走向的弧槽；S6.成孔，下放牙轮空心筒钻并嵌入弧槽中，通过牙轮空心筒钻入设计标高持力层，并取岩芯；S7.成桩。本申请具有钻探穿越斜坡岩面时不易偏心的效果。
Construction process of hard rock stratum pile foundation
一种坚石岩层桩基施工工艺
ZHANG PENG (author) / LIU BENLI (author) / ZHAO HAIJIAN (author) / SHAO KUNHOU (author) / LIU NAIBIN (author) / LUAN WENXIAO (author) / ZHANG JINCHANG (author) / ZHANG HAIJIAO (author) / AN ZHIBO (author) / WANG XIAOSHENG (author)
2023-02-24
Patent
Electronic Resource
Chinese
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