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Construction method for deep hole pile in complex geology
The invention relates to a construction method for a deep hole pile in the complex geology. The construction method comprises the steps of (S1) performing rotary drilling for 3 m by adopting a casing-following drilling method, and installing a steel sleeve special for a 3m bottom section in a hole; (S2) taking soil by a sand bailing hopper, and drilling; (S3) fixedly installing a steel sleeve special for a 4m standard section on the upper end of the steel sleeve special for the 3m bottom section, continuing to perform rotary drilling for 4m hole depth, and enabling the steel sleeve special for the 4m standard section to follow the hole; (S4) fixedly installing a next section of steel sleeve special for the 4m standard section on the upper end of the steel sleeve special for the 4m standard section in the hole, continuing to perform rotary drilling for 4m hole depth, and enabling the steel sleeve special for the 4m standard section to follow the hole; (S5) repeating the step (S4) till the steel sleeve is installed in the required elevation position, and obtaining a formed hole; (S6) performing pile foundation concrete pouring construction; (S7) twisting a pipe, and jacking and removing the steel sleeve; (S8) performing concrete pouring construction of the next section of pile foundation; and (S9) cyclically repeating the steps (S7) and (S8) till the pile foundation concrete in the hole is poured to the required elevation position, and finally, completely pulling out the steel sleeve by a crane.
本申请涉及一种复杂地质深孔桩施工方法，包括S1，采用跟管钻进法，先旋挖钻进3m孔深，并在孔内安装3m底节专用钢套管；S2，捞砂斗取土钻进；S3，在3m底节专用钢套管的上端固定安装4m专用标准节钢套管，继续旋挖钻进4m孔深，并使得4m专用标准节钢套管跟进到孔内；S4，在孔内的4m专用标准节钢套管的上端固定安装下一节4m专用标准节钢套管，继续旋挖钻进4m孔深，并使得4m专用标准节钢套管跟进到孔内；S5，重复S4直至钢套管安装至要求标高位置，得到成孔；S6，进行桩基砼灌注施工；S7，搓管、顶升拆除钢套管；S8，进行下一节桩基砼灌注施工；S9，循环重复S7和S8直至孔内的桩基砼灌注到要求标高位置，最后采用吊车将钢套管全部拔出。
Construction method for deep hole pile in complex geology
The invention relates to a construction method for a deep hole pile in the complex geology. The construction method comprises the steps of (S1) performing rotary drilling for 3 m by adopting a casing-following drilling method, and installing a steel sleeve special for a 3m bottom section in a hole; (S2) taking soil by a sand bailing hopper, and drilling; (S3) fixedly installing a steel sleeve special for a 4m standard section on the upper end of the steel sleeve special for the 3m bottom section, continuing to perform rotary drilling for 4m hole depth, and enabling the steel sleeve special for the 4m standard section to follow the hole; (S4) fixedly installing a next section of steel sleeve special for the 4m standard section on the upper end of the steel sleeve special for the 4m standard section in the hole, continuing to perform rotary drilling for 4m hole depth, and enabling the steel sleeve special for the 4m standard section to follow the hole; (S5) repeating the step (S4) till the steel sleeve is installed in the required elevation position, and obtaining a formed hole; (S6) performing pile foundation concrete pouring construction; (S7) twisting a pipe, and jacking and removing the steel sleeve; (S8) performing concrete pouring construction of the next section of pile foundation; and (S9) cyclically repeating the steps (S7) and (S8) till the pile foundation concrete in the hole is poured to the required elevation position, and finally, completely pulling out the steel sleeve by a crane.
本申请涉及一种复杂地质深孔桩施工方法，包括S1，采用跟管钻进法，先旋挖钻进3m孔深，并在孔内安装3m底节专用钢套管；S2，捞砂斗取土钻进；S3，在3m底节专用钢套管的上端固定安装4m专用标准节钢套管，继续旋挖钻进4m孔深，并使得4m专用标准节钢套管跟进到孔内；S4，在孔内的4m专用标准节钢套管的上端固定安装下一节4m专用标准节钢套管，继续旋挖钻进4m孔深，并使得4m专用标准节钢套管跟进到孔内；S5，重复S4直至钢套管安装至要求标高位置，得到成孔；S6，进行桩基砼灌注施工；S7，搓管、顶升拆除钢套管；S8，进行下一节桩基砼灌注施工；S9，循环重复S7和S8直至孔内的桩基砼灌注到要求标高位置，最后采用吊车将钢套管全部拔出。
Construction method for deep hole pile in complex geology
一种复杂地质深孔桩施工方法
HE XIUYI (author) / ZHANG XIN (author) / ZHAO FENGJIA (author) / TONG JIANYONG (author) / CHEN YIZHAO (author) / WEI YUHU (author)
2021-10-15
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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