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A platform for research: civil engineering, architecture and urbanism
Pile pulling construction technology of full-rotation casing pipe drilling machine
The invention discloses a pile pulling construction technology of a full-rotation casing pipe drilling machine, and relates to the technical field of pile foundation dismantling construction. Comprising the following steps of construction preparation, pile position lofting, working platform laying, drilling machine in-place, casing pipe downward pressing, old pile rotation twist-off, twist-off old pile pulling-out, repeated casing pipe downward pressing-twist-off old pile pulling-out, thorough obstacle removing and pile hole backfilling. The construction safety is high, the casing pipe follows up the wall protection in the whole process, the casing pipe is pressed in in a rotating mode, disturbance to surrounding soil is small, and construction can be conducted close to existing buildings and structures; the method is very suitable for municipal engineering and is a trend of urban construction development; compared with a pile washing method and a water washing method, the method has the advantages of high speed, high working efficiency, low noise and less waste; mechanical construction is adopted, casing pipe follow-up is conducted in the whole process, a punching and grabbing drill is matched to grab a soil body or a pile section in a casing pipe, the pile section can be repeatedly grabbed in the casing pipe, and the obstacle clearing condition can be visually observed; pile hole backfilling after obstacle clearing is easy to compact, and later construction safety is ensured.
本发明公开了一种全回转套管钻机拔桩施工工艺，涉及桩基拆除施工技术领域。包括以下步骤，施工准备，桩位放样，铺设工作平台，钻机就位，套管下压，回转扭断旧桩，拔除扭断旧桩，重复套管下压～拔除扭断旧桩，彻底清障，桩孔回填。本发明施工安全性高，全程套管跟进护壁，套管采用旋转压入，对周围土体扰动小，可靠近既有建、构筑物施工；非常适合市政工程，是市区施工发展的趋势；本发明与冲桩法、水冲法比：速度快、工效高、噪声低、废弃物少；采用机械化施工，全程套管跟进，冲抓钻配合抓取套管内土体或桩段，可在套管内反复抓取桩段，能直观观察清障情况；清障后桩孔回填易于密实，确保后期施工安全。
Pile pulling construction technology of full-rotation casing pipe drilling machine
The invention discloses a pile pulling construction technology of a full-rotation casing pipe drilling machine, and relates to the technical field of pile foundation dismantling construction. Comprising the following steps of construction preparation, pile position lofting, working platform laying, drilling machine in-place, casing pipe downward pressing, old pile rotation twist-off, twist-off old pile pulling-out, repeated casing pipe downward pressing-twist-off old pile pulling-out, thorough obstacle removing and pile hole backfilling. The construction safety is high, the casing pipe follows up the wall protection in the whole process, the casing pipe is pressed in in a rotating mode, disturbance to surrounding soil is small, and construction can be conducted close to existing buildings and structures; the method is very suitable for municipal engineering and is a trend of urban construction development; compared with a pile washing method and a water washing method, the method has the advantages of high speed, high working efficiency, low noise and less waste; mechanical construction is adopted, casing pipe follow-up is conducted in the whole process, a punching and grabbing drill is matched to grab a soil body or a pile section in a casing pipe, the pile section can be repeatedly grabbed in the casing pipe, and the obstacle clearing condition can be visually observed; pile hole backfilling after obstacle clearing is easy to compact, and later construction safety is ensured.
本发明公开了一种全回转套管钻机拔桩施工工艺，涉及桩基拆除施工技术领域。包括以下步骤，施工准备，桩位放样，铺设工作平台，钻机就位，套管下压，回转扭断旧桩，拔除扭断旧桩，重复套管下压～拔除扭断旧桩，彻底清障，桩孔回填。本发明施工安全性高，全程套管跟进护壁，套管采用旋转压入，对周围土体扰动小，可靠近既有建、构筑物施工；非常适合市政工程，是市区施工发展的趋势；本发明与冲桩法、水冲法比：速度快、工效高、噪声低、废弃物少；采用机械化施工，全程套管跟进，冲抓钻配合抓取套管内土体或桩段，可在套管内反复抓取桩段，能直观观察清障情况；清障后桩孔回填易于密实，确保后期施工安全。
Pile pulling construction technology of full-rotation casing pipe drilling machine
一种全回转套管钻机拔桩施工工艺
YI LINGBING (author) / KANG DAYONG (author) / ZHENG LIMING (author) / NING JICHAO (author) / LIU BOFENG (author) / LI WEIZHOU (author) / CHEN QINGHUAI (author) / ZHANG MINGXU (author) / SHAO QI (author) / LIU SHENGHUAN (author)
2024-06-14
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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