旋挖机配套长护筒成孔技术在软土地层的应用

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摘  要：介绍旋挖机配套长护筒成孔技术，通过对施工流程、工艺主要控制点和工艺的优缺点等方面阐述，为在上海等厚软土及暗浜发育地区，拟建场地地下障碍物多且类型杂乱，回旋钻机成孔困难，周边建筑物位移控制要求高的工程项目基础桩基施工提供工程参考。

关键词：钻孔灌注桩;成孔工艺;旋挖钻机;削切;浇筑混凝土

中图分类号：TU67      文献标志码：A          文章编号：2095-2945（2022）28-0177-04

Abstract： This paper describes the holeforming technology of long protective tube for rotary excavator， and expounds the construction flow， control points of technology， advantages and disadvantages of technology， etc.， in order to provide engineering reference for the foundation pile foundation construction of engineering project， where there are many underground obstacles on proposed sites for buildings， where it is difficult to form holes by rotary drilling rig， where there are high requirementsfor displacement control of surrounding buildingsin the development area of thick soft soil and hidden ditchesin Shanghai.

Keywords： bored cast-in-place pile; hole forming technology; rotary drilling rig; cut apart; concreting

上海国际时尚中心新建游船码头工程（水域部分）位于上海市杨浦区黄浦江滨江上海国际时尚中心前沿水域。（剩余4102字）