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Construction method of full-casing follow-up long spiral drilling press-grouting secant pile
The invention relates to a construction method of a full-casing follow-up long spiral drilling press-grouting secant pile. The construction method comprises the following steps of S1, positioning andpaying off; S2, guide wall construction; S3, drilling; S3.1, a drilling machine is in place; S3.2, starting the drilling machine; S4, pressing and grouting concrete; and S5, mounting a reinforcement cage; the forming sequence of pile holes is A1-B1-A2-B2-A3-B3-A4-B4... An-Bn; after the A1 concrete is subjected to press-grouting, the B1 pile hole is excavated immediately; when A2 pile hole concretepress-grouting is completed, reinforcement cage installation is conducted on the B1 pile hole; and when A3 concrete pressure grouting is completed, reinforcement cage installation is conducted on B2pile holes, and reinforcement cage installation of the B-shaped piles is sequentially conducted. The construction method has the effects that construction is convenient, meanwhile, stable connection between the A-type piles and the B-type piles is enhanced, cold joints are reduced, the wall water stop effect is improved, and the water seepage probability is reduced.
本发明涉及一种全护筒跟进长螺旋钻孔压灌咬合桩施工方法，步骤如下：S1，定位放线；S2，导墙施工；S3，钻孔；S3.1，钻机就位；S3.2，钻机启动；S4，压灌混凝土；S5，安装钢筋笼；所述桩孔开设顺序为：A1‑B1‑A2‑B2‑A3‑B3‑A4‑B4…An‑Bn；所述A1混凝土压灌完成后，即刻对B1桩孔进行开挖；当完成A2桩孔混凝土压灌时，对B1桩孔进行钢筋笼安装；当完成A3混凝土压灌时，对B2桩孔进行钢筋笼安装，依次进行B型桩的钢筋笼安装。本发明具有方便施工的同时，增强A型桩与B型桩之间稳定连接，减少冷缝产生，提高墙体止水效果，降低渗水几率的效果。
Construction method of full-casing follow-up long spiral drilling press-grouting secant pile
The invention relates to a construction method of a full-casing follow-up long spiral drilling press-grouting secant pile. The construction method comprises the following steps of S1, positioning andpaying off; S2, guide wall construction; S3, drilling; S3.1, a drilling machine is in place; S3.2, starting the drilling machine; S4, pressing and grouting concrete; and S5, mounting a reinforcement cage; the forming sequence of pile holes is A1-B1-A2-B2-A3-B3-A4-B4... An-Bn; after the A1 concrete is subjected to press-grouting, the B1 pile hole is excavated immediately; when A2 pile hole concretepress-grouting is completed, reinforcement cage installation is conducted on the B1 pile hole; and when A3 concrete pressure grouting is completed, reinforcement cage installation is conducted on B2pile holes, and reinforcement cage installation of the B-shaped piles is sequentially conducted. The construction method has the effects that construction is convenient, meanwhile, stable connection between the A-type piles and the B-type piles is enhanced, cold joints are reduced, the wall water stop effect is improved, and the water seepage probability is reduced.
本发明涉及一种全护筒跟进长螺旋钻孔压灌咬合桩施工方法，步骤如下：S1，定位放线；S2，导墙施工；S3，钻孔；S3.1，钻机就位；S3.2，钻机启动；S4，压灌混凝土；S5，安装钢筋笼；所述桩孔开设顺序为：A1‑B1‑A2‑B2‑A3‑B3‑A4‑B4…An‑Bn；所述A1混凝土压灌完成后，即刻对B1桩孔进行开挖；当完成A2桩孔混凝土压灌时，对B1桩孔进行钢筋笼安装；当完成A3混凝土压灌时，对B2桩孔进行钢筋笼安装，依次进行B型桩的钢筋笼安装。本发明具有方便施工的同时，增强A型桩与B型桩之间稳定连接，减少冷缝产生，提高墙体止水效果，降低渗水几率的效果。
Construction method of full-casing follow-up long spiral drilling press-grouting secant pile
一种全护筒跟进长螺旋钻孔压灌咬合桩施工方法
CAO KAIWEI (author) / XU SHENGCAI (author) / LUO CHENGMING (author) / FENG SHANGTAO (author) / HUANG HUI (author) / YAO SHI (author)
2020-08-11
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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