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Ultra-large-diameter rotary excavating pile concrete pouring construction method for preventing reinforcement cage from floating
The invention relates to the technical field of concrete pouring construction, and discloses an ultra-large-diameter rotary excavating pile concrete pouring construction method for preventing a reinforcement cage from floating. The method comprises the following construction steps that 1) a pile hole is rotatably excavated, and the reinforcement cage provided with reinforcing ribs is put down; 2) a guide pipe provided with a supporting and blocking structure is put down, and the supporting and blocking structure is opened upwards to the limiting position; 3) concrete is poured into the guide pipe, and the floating condition of the guide pipe is observed; and 4) the guide pipe is lifted, and the supporting and blocking structure is swung downwards. The reinforcing ribs are arranged on the reinforcement cage, the supporting and blocking structure is arranged on the guide pipe, the supporting and blocking structure is swung upwards to the limiting position firstly, then the guide pipe is put into the reinforcement cage to the set height, at the moment, the supporting and blocking structure abuts against the reinforcing ribs of the reinforcement cage, and the concrete is poured into the guide pipe; if the reinforcement cage floats upwards, the floating cage load is transmitted to the supporting and blocking structure through the reinforcing ribs; and due to the fact that the guide pipe is large in self weight and is connected with the supporting and blocking structure, the self gravity can be transmitted to the reinforcement cage through the supporting and blocking structure, and therefore the floating cage load is balanced.
本发明涉及混凝土浇灌施工的技术领域，公开了防止钢筋笼浮笼的超大口径旋挖桩混凝土浇灌施工方法，包括以下施工步骤：1)旋挖桩孔，下放安装有加强筋的钢筋笼；2)下放安装有支挡结构的导管，朝上打开支挡结构至极限位置；3)往导管内浇灌混凝土，观察导管浮动情况；4)提升导管，朝下摆动支挡结构。通过在钢筋笼上设置加强筋，在导管上设置支挡结构，先把支挡结构朝上摆动至极限位置，再把导管放入钢筋笼内至设定高度，这时支挡结构抵压在钢筋笼的加强筋上，往导管内浇灌混凝土，如果钢筋笼上浮，浮笼荷载通过加强筋传导到支挡结构上，由于导管自重大且与支挡结构连接，可以将自身的重力通过支挡结构传导给钢筋笼，从而将浮笼荷载平衡掉。
Ultra-large-diameter rotary excavating pile concrete pouring construction method for preventing reinforcement cage from floating
The invention relates to the technical field of concrete pouring construction, and discloses an ultra-large-diameter rotary excavating pile concrete pouring construction method for preventing a reinforcement cage from floating. The method comprises the following construction steps that 1) a pile hole is rotatably excavated, and the reinforcement cage provided with reinforcing ribs is put down; 2) a guide pipe provided with a supporting and blocking structure is put down, and the supporting and blocking structure is opened upwards to the limiting position; 3) concrete is poured into the guide pipe, and the floating condition of the guide pipe is observed; and 4) the guide pipe is lifted, and the supporting and blocking structure is swung downwards. The reinforcing ribs are arranged on the reinforcement cage, the supporting and blocking structure is arranged on the guide pipe, the supporting and blocking structure is swung upwards to the limiting position firstly, then the guide pipe is put into the reinforcement cage to the set height, at the moment, the supporting and blocking structure abuts against the reinforcing ribs of the reinforcement cage, and the concrete is poured into the guide pipe; if the reinforcement cage floats upwards, the floating cage load is transmitted to the supporting and blocking structure through the reinforcing ribs; and due to the fact that the guide pipe is large in self weight and is connected with the supporting and blocking structure, the self gravity can be transmitted to the reinforcement cage through the supporting and blocking structure, and therefore the floating cage load is balanced.
本发明涉及混凝土浇灌施工的技术领域，公开了防止钢筋笼浮笼的超大口径旋挖桩混凝土浇灌施工方法，包括以下施工步骤：1)旋挖桩孔，下放安装有加强筋的钢筋笼；2)下放安装有支挡结构的导管，朝上打开支挡结构至极限位置；3)往导管内浇灌混凝土，观察导管浮动情况；4)提升导管，朝下摆动支挡结构。通过在钢筋笼上设置加强筋，在导管上设置支挡结构，先把支挡结构朝上摆动至极限位置，再把导管放入钢筋笼内至设定高度，这时支挡结构抵压在钢筋笼的加强筋上，往导管内浇灌混凝土，如果钢筋笼上浮，浮笼荷载通过加强筋传导到支挡结构上，由于导管自重大且与支挡结构连接，可以将自身的重力通过支挡结构传导给钢筋笼，从而将浮笼荷载平衡掉。
Ultra-large-diameter rotary excavating pile concrete pouring construction method for preventing reinforcement cage from floating
防止钢筋笼浮笼的超大口径旋挖桩混凝土浇灌施工方法
SONG WEI (author) / FANG JIANGFENG (author) / JIAO YANBING (author) / GUO QIUHONG (author) / ZHANG SIQI (author)
2021-11-19
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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