A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SDDC pile ground structure construction method
The invention relates to an SDDC pile ground structure construction method. A rammer carries out layered tamping and compacting on the deep layer of a foundation from bottom to top, backfill is forcedto be extruded through tamping work with high kinetic energy, super pressure intensity and strong compaction, and dense pile bodies are formed. Meanwhile, the side face of the rammer generates extremely high dynamic passive earth pressure, and earth among piles is strongly compacted and reinforced. Earth around the piles is compacted to form a forced compacted area, a compacted area and a compacted influence area, so that a foundation bears high compressive pre-press, no obvious compressive deformation is generated when the treated foundation is soaked with water or loaded, and the mechanicalproperty of the foundation is improved. Under the tamping action of high kinetic energy, super pressure intensity and strong compaction on the SDDC piles, the earth stress is slowly released, and lateral restraints are generated on the earth around the piles. The lateral stress borne by the earth around the piles is slowly released after the piles are formed, the piles and the earth among the piles form a compact whole, and the treatment depth is large. The treated composite foundation is uniform in rigidity, and the bearing capacity is remarkably improved.
本发明涉及一种SDDC桩地结构施工方法，其通过夯锤在地基深层自下而上分层夯实挤密，以高动能、超压强、强挤密的夯击作业，对回填料强制挤压，形成密实桩体。同时夯锤侧面产生极大的动态被动土压力，使桩间土也被强力挤密加固。桩周土被挤密形成强制挤密区、挤密区和挤密影响区，使地基受到很高的预压应力，处理后地基浸水或加载不会产生明显的压缩变形，提高了地基土的力学性质。SDDC桩在高动能、超压强、强挤密的夯击作用下，土体应力缓慢释放，对桩周土产生侧向约束；桩周土受到侧向应力在成桩后缓慢释放，使桩与桩间土形成密实整体，处理深度较大。处理后复合地基不仅刚度均匀，而且承载力显著提升。
SDDC pile ground structure construction method
The invention relates to an SDDC pile ground structure construction method. A rammer carries out layered tamping and compacting on the deep layer of a foundation from bottom to top, backfill is forcedto be extruded through tamping work with high kinetic energy, super pressure intensity and strong compaction, and dense pile bodies are formed. Meanwhile, the side face of the rammer generates extremely high dynamic passive earth pressure, and earth among piles is strongly compacted and reinforced. Earth around the piles is compacted to form a forced compacted area, a compacted area and a compacted influence area, so that a foundation bears high compressive pre-press, no obvious compressive deformation is generated when the treated foundation is soaked with water or loaded, and the mechanicalproperty of the foundation is improved. Under the tamping action of high kinetic energy, super pressure intensity and strong compaction on the SDDC piles, the earth stress is slowly released, and lateral restraints are generated on the earth around the piles. The lateral stress borne by the earth around the piles is slowly released after the piles are formed, the piles and the earth among the piles form a compact whole, and the treatment depth is large. The treated composite foundation is uniform in rigidity, and the bearing capacity is remarkably improved.
本发明涉及一种SDDC桩地结构施工方法，其通过夯锤在地基深层自下而上分层夯实挤密，以高动能、超压强、强挤密的夯击作业，对回填料强制挤压，形成密实桩体。同时夯锤侧面产生极大的动态被动土压力，使桩间土也被强力挤密加固。桩周土被挤密形成强制挤密区、挤密区和挤密影响区，使地基受到很高的预压应力，处理后地基浸水或加载不会产生明显的压缩变形，提高了地基土的力学性质。SDDC桩在高动能、超压强、强挤密的夯击作用下，土体应力缓慢释放，对桩周土产生侧向约束；桩周土受到侧向应力在成桩后缓慢释放，使桩与桩间土形成密实整体，处理深度较大。处理后复合地基不仅刚度均匀，而且承载力显著提升。
SDDC pile ground structure construction method
SDDC桩地结构施工方法
LI ZHENBIN (author) / WAN PENGHUI (author) / HAN XUEHUA (author) / ZHANG PEIXUAN (author) / HOU DANQING (author)
2020-09-11
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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