Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
External expansion type secondary excavation and support construction method for deep foundation pit
The invention discloses a deep foundation pit external expansion type secondary excavation and support construction method, and belongs to the technical field of foundation pit support and earth excavation. The integrality of a new foundation pit is guaranteed through new support pile crown beams, steel enclosing purlins and inter-pile steel supports. And the top beams of the new support piles and the top beams of the original support piles are connected into a whole. And after the earth is excavated to the bottom elevation of the buried pipe gallery structure to be constructed, part of the original supporting piles are removed, and a construction space is provided for follow-up pipe gallery structure construction. And meanwhile, damage to the integrity of an original foundation pit supporting system in the construction process is effectively avoided. The system is higher in safety and higher in construction speed. The process is reasonable in procedure, safe, reliable and convenient to construct, the safety can be greatly improved, the construction progress is accelerated, and cost saving is facilitated.
本发明的深基坑外扩式二次开挖及支护施工方法属于基坑支护与土方开挖技术领域，本发明通过新支护桩冠梁、钢围檩及桩间钢支撑保证新基坑的整体性。并通过新支护桩冠梁与原支护桩的冠梁连接成整体。待土方开挖至待施工的暗埋管廊结构底部标高后，对部分原有支护桩进行拆除，为后续管廊结构施工提供施工空间。同时有效避免了施工过程中对原有基坑支护体系整体性的破坏。本系统安全性更高、施工速度更快。本工艺工序合理，安全可靠，施工方便，可大幅提高安全性，加快施工进度，有利于成本的节约。
External expansion type secondary excavation and support construction method for deep foundation pit
The invention discloses a deep foundation pit external expansion type secondary excavation and support construction method, and belongs to the technical field of foundation pit support and earth excavation. The integrality of a new foundation pit is guaranteed through new support pile crown beams, steel enclosing purlins and inter-pile steel supports. And the top beams of the new support piles and the top beams of the original support piles are connected into a whole. And after the earth is excavated to the bottom elevation of the buried pipe gallery structure to be constructed, part of the original supporting piles are removed, and a construction space is provided for follow-up pipe gallery structure construction. And meanwhile, damage to the integrity of an original foundation pit supporting system in the construction process is effectively avoided. The system is higher in safety and higher in construction speed. The process is reasonable in procedure, safe, reliable and convenient to construct, the safety can be greatly improved, the construction progress is accelerated, and cost saving is facilitated.
本发明的深基坑外扩式二次开挖及支护施工方法属于基坑支护与土方开挖技术领域，本发明通过新支护桩冠梁、钢围檩及桩间钢支撑保证新基坑的整体性。并通过新支护桩冠梁与原支护桩的冠梁连接成整体。待土方开挖至待施工的暗埋管廊结构底部标高后，对部分原有支护桩进行拆除，为后续管廊结构施工提供施工空间。同时有效避免了施工过程中对原有基坑支护体系整体性的破坏。本系统安全性更高、施工速度更快。本工艺工序合理，安全可靠，施工方便，可大幅提高安全性，加快施工进度，有利于成本的节约。
External expansion type secondary excavation and support construction method for deep foundation pit
一种深基坑外扩式二次开挖及支护施工方法
LI JIAXING (Autor:in) / FANG ZHOU (Autor:in) / YUAN HAILONG (Autor:in) / ZHAO WENKE (Autor:in) / GUO XIN (Autor:in) / LI TENG (Autor:in) / WU ZIHAN (Autor:in)
06.01.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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