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A platform for research: civil engineering, architecture and urbanism
Construction technology of root fixing pile
The invention discloses a construction process of a root fixing pile, which belongs to the technical field of geotechnical engineering and comprises the following steps: S1, pile position determination and redetermination; s2, a pile machine is in place; s3, full pile casing hole forming; s4, the hole is filled with pile end filling materials, tamping is conducted, and the pile end filling materials and compaction influence soil body compounding to form an expanded head bearing body; s5, filling a filling material around the pile in the hole, and tamping; s6, the pile casing is pulled out; s7, the precast pile is subjected to static pressure or hammering to reach the designed elevation; s8, if pile splicing is needed, the step S7 is repeated; in the pile forming process, the soil body around the pile is compacted and reinforced twice, meanwhile, the compaction and reinforcement effect on the soil body at the pile end is achieved, an expanded bearing body in a certain range is formed at the pile end, the stress state of the pile is improved, compared with a traditional root fixing pile, the bearing capacity can be improved by about 20%, and the root fixing pile can better adapt to geological conditions such as deep filling soil and collapsible soil; the strength is high, the stability is good, and the structural stress design requirement is met.
本发明公开了一种根固桩的施工工艺，属于岩土工程技术领域，包括以下步骤：S1：桩位测定以及复测；S2：桩机就位；S3：全护筒成孔；S4：孔内填筑桩端填充料，夯实，桩端填充料和挤密影响土体复合形成扩大头承载体；S5：孔内灌注桩周填充料，夯实；S6：拔出护筒；S7：采用静压或锤击预制桩至设计标高；S8：如需接桩，重复步骤S7；本发明成桩过程中对桩周土体进行两次挤密加固，同时对桩端土体亦有挤密加固效果，并在桩端形成一定范围扩大承载体，改善桩的受力状态，相比传统的根固桩在承载力上可提高20％左右，能够更好适应深厚填土、湿陷性土等地质条件，且强度高，稳定性好，满足结构受力设计要求。
Construction technology of root fixing pile
The invention discloses a construction process of a root fixing pile, which belongs to the technical field of geotechnical engineering and comprises the following steps: S1, pile position determination and redetermination; s2, a pile machine is in place; s3, full pile casing hole forming; s4, the hole is filled with pile end filling materials, tamping is conducted, and the pile end filling materials and compaction influence soil body compounding to form an expanded head bearing body; s5, filling a filling material around the pile in the hole, and tamping; s6, the pile casing is pulled out; s7, the precast pile is subjected to static pressure or hammering to reach the designed elevation; s8, if pile splicing is needed, the step S7 is repeated; in the pile forming process, the soil body around the pile is compacted and reinforced twice, meanwhile, the compaction and reinforcement effect on the soil body at the pile end is achieved, an expanded bearing body in a certain range is formed at the pile end, the stress state of the pile is improved, compared with a traditional root fixing pile, the bearing capacity can be improved by about 20%, and the root fixing pile can better adapt to geological conditions such as deep filling soil and collapsible soil; the strength is high, the stability is good, and the structural stress design requirement is met.
本发明公开了一种根固桩的施工工艺，属于岩土工程技术领域，包括以下步骤：S1：桩位测定以及复测；S2：桩机就位；S3：全护筒成孔；S4：孔内填筑桩端填充料，夯实，桩端填充料和挤密影响土体复合形成扩大头承载体；S5：孔内灌注桩周填充料，夯实；S6：拔出护筒；S7：采用静压或锤击预制桩至设计标高；S8：如需接桩，重复步骤S7；本发明成桩过程中对桩周土体进行两次挤密加固，同时对桩端土体亦有挤密加固效果，并在桩端形成一定范围扩大承载体，改善桩的受力状态，相比传统的根固桩在承载力上可提高20％左右，能够更好适应深厚填土、湿陷性土等地质条件，且强度高，稳定性好，满足结构受力设计要求。
Construction technology of root fixing pile
一种根固桩的施工工艺
HU HAIBIN (author) / LI LONG (author) / HU MINGSHUN (author) / DENG YAGUANG (author)
2022-11-11
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Grouting root fixing and expanding body steel pipe pile and construction method thereof
| European Patent Office | 2024