A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a sea area gravel pile construction process. The sea area gravel pile construction process comprises the steps that a hole is punched through vibroflotation, and a steel sleeveis sunken synchronously; mud and seawater in the steel sleeve are removed; a gravel filler is filled, and vibroflotation compaction is conducted to form a first compact layer; three micro-pile holesare formed in the top surface of the first compact layer at intervals, and steel pipes are correspondingly placed in the micro-pile holes; the gravel filler continues to be filled, vibroflotation compaction is conducted, a second compact layer is formed, and meanwhile the steel sleeve is pulled up; a grouting mechanism is put down in the steel sleeve, the gravel filler continues to be filled, vibroflotation compaction is conducted, a third compact layer is formed, and meanwhile the steel sleeve is pulled up; the previous step is repeated to a set height to form a compact base layer; high-pressure grouting is conducted on any steel pipe to form a micro-pile body; and the gravel filler continues to be filled, vibroflotation compaction is conducted to reach the designed height of the pile body, meanwhile, the steel sleeve is pulled out, and construction of a gravel pile at the pile body position is completed. The sea area gravel pile construction process has the beneficial effects that the strength of the pile body is improved, the bearing capacity of a foundation is enhanced, and then the construction quality and safety are guaranteed.
本发明公开了一种海域碎石桩施工工艺，包括：振冲开孔并同步下沉钢套管；清除钢套管内的泥浆和海水；填充碎石填料，振冲压实，形成第一密实层；在第一密实层的顶面上间隔设置三个微桩孔并对应放置钢管；继续填充碎石填料，振冲压实，形成第二密实层，同时上拔钢套管；在钢套管内下放注浆机构，继续填充碎石填料，振冲压实，形成第三密实层，同时上拔钢套管；重复上一步骤至设定高度，形成密实基层；向任一钢管高压注浆以形成微桩体；继续填充碎石填料，振冲压实至桩体的设计高度，同时拔除钢套管，完成该桩体位置的碎石桩的施工。本发明具有提高桩体的强度，增强地基的承载力，进而保障施工质量和安全的有益效果。
The invention discloses a sea area gravel pile construction process. The sea area gravel pile construction process comprises the steps that a hole is punched through vibroflotation, and a steel sleeveis sunken synchronously; mud and seawater in the steel sleeve are removed; a gravel filler is filled, and vibroflotation compaction is conducted to form a first compact layer; three micro-pile holesare formed in the top surface of the first compact layer at intervals, and steel pipes are correspondingly placed in the micro-pile holes; the gravel filler continues to be filled, vibroflotation compaction is conducted, a second compact layer is formed, and meanwhile the steel sleeve is pulled up; a grouting mechanism is put down in the steel sleeve, the gravel filler continues to be filled, vibroflotation compaction is conducted, a third compact layer is formed, and meanwhile the steel sleeve is pulled up; the previous step is repeated to a set height to form a compact base layer; high-pressure grouting is conducted on any steel pipe to form a micro-pile body; and the gravel filler continues to be filled, vibroflotation compaction is conducted to reach the designed height of the pile body, meanwhile, the steel sleeve is pulled out, and construction of a gravel pile at the pile body position is completed. The sea area gravel pile construction process has the beneficial effects that the strength of the pile body is improved, the bearing capacity of a foundation is enhanced, and then the construction quality and safety are guaranteed.
本发明公开了一种海域碎石桩施工工艺，包括：振冲开孔并同步下沉钢套管；清除钢套管内的泥浆和海水；填充碎石填料，振冲压实，形成第一密实层；在第一密实层的顶面上间隔设置三个微桩孔并对应放置钢管；继续填充碎石填料，振冲压实，形成第二密实层，同时上拔钢套管；在钢套管内下放注浆机构，继续填充碎石填料，振冲压实，形成第三密实层，同时上拔钢套管；重复上一步骤至设定高度，形成密实基层；向任一钢管高压注浆以形成微桩体；继续填充碎石填料，振冲压实至桩体的设计高度，同时拔除钢套管，完成该桩体位置的碎石桩的施工。本发明具有提高桩体的强度，增强地基的承载力，进而保障施工质量和安全的有益效果。
Pipe pile body, gravel drainage pipe pile and construction method of gravel drainage pipe pile
| European Patent Office | 2023