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A platform for research: civil engineering, architecture and urbanism
Variable diameter point jet grouting secondary pile forming method
The invention provides a variable diameter point rotary jet grouting secondary pile forming method. The method comprises the following steps: loosening a rotary jet grouting soil body by adopting a hole pre-forming or high-pressure water rotary jet grouting method; and then the variable-diameter-point rotary spraying device rotates to be counted into the soil body, and graded rotary spraying is carried out. The variable-diameter-point jet grouting meets the condition that Ri-Ri-1 is smaller than or equal to Ry (the effective influence radius of jet grouting jet), and a large-diameter jet grouting pile can be formed. The jet grouting method has the advantages that jet grouting benefits are high, the cement paste return amount is small, the cement paste in the soil body is evenly distributed, and a high-strength pile body is easily formed.
本发明提供了一种多变径点旋喷二次成桩方法，先采取预成孔或高压水旋喷方法松动旋喷土体；然后多变径点旋喷装置旋转计入土体，进行分级旋喷。多变径点旋喷满足Ri‑Ri‑1≤Ry（旋喷射流有效影响半径），能够形成大直径旋喷桩。本发明具有旋喷效益高、水泥浆返浆量小、土体中水泥浆分布均匀、容易形成高强度桩体等优点。
Variable diameter point jet grouting secondary pile forming method
The invention provides a variable diameter point rotary jet grouting secondary pile forming method. The method comprises the following steps: loosening a rotary jet grouting soil body by adopting a hole pre-forming or high-pressure water rotary jet grouting method; and then the variable-diameter-point rotary spraying device rotates to be counted into the soil body, and graded rotary spraying is carried out. The variable-diameter-point jet grouting meets the condition that Ri-Ri-1 is smaller than or equal to Ry (the effective influence radius of jet grouting jet), and a large-diameter jet grouting pile can be formed. The jet grouting method has the advantages that jet grouting benefits are high, the cement paste return amount is small, the cement paste in the soil body is evenly distributed, and a high-strength pile body is easily formed.
本发明提供了一种多变径点旋喷二次成桩方法，先采取预成孔或高压水旋喷方法松动旋喷土体；然后多变径点旋喷装置旋转计入土体，进行分级旋喷。多变径点旋喷满足Ri‑Ri‑1≤Ry（旋喷射流有效影响半径），能够形成大直径旋喷桩。本发明具有旋喷效益高、水泥浆返浆量小、土体中水泥浆分布均匀、容易形成高强度桩体等优点。
Variable diameter point jet grouting secondary pile forming method
一种多变径点旋喷二次成桩方法
YE XIAOMING (author) / REN YONGMING (author)
2024-01-26
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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