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A platform for research: civil engineering, architecture and urbanism
Sleeved pile-foundation bed combined seismic isolation system and sleeved pile construction method thereof
The invention discloses a sleeved pile-foundation bed combined seismic isolation system and a sleeved pile construction method thereof. The system comprises a foundation bed and a plurality of sleevedpiles, wherein the foundation bed is arranged below a pile bearing platform and located in a surrounding soil body; each sleeved pile comprises a pile body, a sleeve and a filling material, the piletop of each pile body penetrates through the foundation bed to be embedded into the pile bearing platform to be fixedly connected with the pile bearing platform, and the pile bottom of each pile bodypenetrates through the surrounding soil body to go deep into a hard soil layer; and the sleeve is sleeved outside the pile body, and the filling material is filled between the sleeve and the pile body. According to the system, the friction energy consumption, deformation energy consumption and inherent damping characteristics of a rubber sand material are utilized to weaken seismic wave propagation energy; meanwhile, the horizontal rigidity of a seismic isolation layer is reduced by utilizing the sleeved pile and seismic isolation layer combined system, the natural vibration period of the structure is prolonged, and therefore the influence of seismic motion on the structure is effectively weakened; and the construction process corresponding to the seismic isolation system avoids damage toan isolation layer of the sleeve, and the construction process is more reasonable.
本发明公开了一种套管桩—基础垫层联合隔震体系及其套管桩施工方法，包括基础垫层和多个套管桩，基础垫层布置在桩承台下方、并位于周围土体内；每个套管桩包括桩体、套管和填充材料，桩体的桩顶穿过基础垫层嵌入至桩承台内与桩承台固定连接，桩体的桩底穿过周围土体深入至坚硬土层内；套管套设在桩体的外部，填充材料填充在套管与桩体之间。本发明利用橡胶砂材料本身的摩擦耗能、形变耗能以及其固有的阻尼特性削弱地震波传播的能量；同时利用套管桩和隔震垫层联合体系这一结构减小隔震层水平刚度，延长结构自振周期进而有效减弱了地震动对结构的影响；与此隔震体系相对应的施工工艺避免了对套管隔离层的破坏，施工工序也更为合理。
Sleeved pile-foundation bed combined seismic isolation system and sleeved pile construction method thereof
The invention discloses a sleeved pile-foundation bed combined seismic isolation system and a sleeved pile construction method thereof. The system comprises a foundation bed and a plurality of sleevedpiles, wherein the foundation bed is arranged below a pile bearing platform and located in a surrounding soil body; each sleeved pile comprises a pile body, a sleeve and a filling material, the piletop of each pile body penetrates through the foundation bed to be embedded into the pile bearing platform to be fixedly connected with the pile bearing platform, and the pile bottom of each pile bodypenetrates through the surrounding soil body to go deep into a hard soil layer; and the sleeve is sleeved outside the pile body, and the filling material is filled between the sleeve and the pile body. According to the system, the friction energy consumption, deformation energy consumption and inherent damping characteristics of a rubber sand material are utilized to weaken seismic wave propagation energy; meanwhile, the horizontal rigidity of a seismic isolation layer is reduced by utilizing the sleeved pile and seismic isolation layer combined system, the natural vibration period of the structure is prolonged, and therefore the influence of seismic motion on the structure is effectively weakened; and the construction process corresponding to the seismic isolation system avoids damage toan isolation layer of the sleeve, and the construction process is more reasonable.
本发明公开了一种套管桩—基础垫层联合隔震体系及其套管桩施工方法，包括基础垫层和多个套管桩，基础垫层布置在桩承台下方、并位于周围土体内；每个套管桩包括桩体、套管和填充材料，桩体的桩顶穿过基础垫层嵌入至桩承台内与桩承台固定连接，桩体的桩底穿过周围土体深入至坚硬土层内；套管套设在桩体的外部，填充材料填充在套管与桩体之间。本发明利用橡胶砂材料本身的摩擦耗能、形变耗能以及其固有的阻尼特性削弱地震波传播的能量；同时利用套管桩和隔震垫层联合体系这一结构减小隔震层水平刚度，延长结构自振周期进而有效减弱了地震动对结构的影响；与此隔震体系相对应的施工工艺避免了对套管隔离层的破坏，施工工序也更为合理。
Sleeved pile-foundation bed combined seismic isolation system and sleeved pile construction method thereof
一种套管桩—基础垫层联合隔震体系及其套管桩施工方法
BA ZHENNING (author) / WU MENGTAO (author) / LU SHIBIN (author) / LIANG JIANWEN (author)
2021-03-12
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Flexible Sleeved-Pile Foundations for Aseismic Design
| NTIS | 1982
Interaction between slope and sleeved pile groups
| British Library Conference Proceedings | 2001
Influence of laterally loaded sleeved piles and pile groups on slope stability
| Online Contents | 2001