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A platform for research: civil engineering, architecture and urbanism
Construction method for synchronously and rapidly excavating large-area ultra-deep foundation pit in complex environment
The invention discloses a construction method for synchronous and rapid excavation of a large-area ultra-deep foundation pit in a complex environment, an original supporting structure form of angle braces and inclined throwing braces of the foundation pit is optimized into a supporting structure form of arc braces, opposite braces and trestles, and on the premise that it is determined that the project construction period is short and the foundation pit needs synchronous and rapid excavation construction, the supporting structure form of the arc braces, the opposite braces and the trestles is provided for safety of the foundation pit. A foundation pit support type is modified into an arc support and diagonal support form, an unearthed trestle and a reinforcing steel bar processing field in the east-west direction are additionally arranged in a foundation pit, a foundation pit 2-B area, a foundation pit 2-Aa area and a foundation pit 2-Ac area are synchronously excavated in sequence, and an island type excavation mode is adopted, so that the support form can be rapidly formed; and in the supporting construction and maintenance process, the center island is unearthed continuously, foundation pit supporting is effectively strengthened, and the foundation pit safety problem of synchronous excavation of the foundation pit is effectively solved.
本发明公开了一种复杂环境下大面积超深基坑同步快速开挖的施工方法，将原有基坑角撑+斜抛撑的支护结构形式优化为圆弧撑+对撑+栈桥的支护结构形式，当在确定项目工期紧张，基坑需要同步快速开挖施工的前提后，为了基坑安全，将基坑支护型式修改为圆弧撑+对撑的形式，并在基坑内新增东西方向的出土栈桥及钢筋加工场，基坑开挖顺序为基坑2‑B区域、基坑2‑Aa区域和基坑2‑Ac区域同步开挖，采用岛式开挖方式既能使得支护形式快速形成，又能在支撑施工及养护过程中，中心岛连续出土，基坑支护得到了有效的加强，基坑同步开挖的基坑安全问题得到了有效的解决。
Construction method for synchronously and rapidly excavating large-area ultra-deep foundation pit in complex environment
The invention discloses a construction method for synchronous and rapid excavation of a large-area ultra-deep foundation pit in a complex environment, an original supporting structure form of angle braces and inclined throwing braces of the foundation pit is optimized into a supporting structure form of arc braces, opposite braces and trestles, and on the premise that it is determined that the project construction period is short and the foundation pit needs synchronous and rapid excavation construction, the supporting structure form of the arc braces, the opposite braces and the trestles is provided for safety of the foundation pit. A foundation pit support type is modified into an arc support and diagonal support form, an unearthed trestle and a reinforcing steel bar processing field in the east-west direction are additionally arranged in a foundation pit, a foundation pit 2-B area, a foundation pit 2-Aa area and a foundation pit 2-Ac area are synchronously excavated in sequence, and an island type excavation mode is adopted, so that the support form can be rapidly formed; and in the supporting construction and maintenance process, the center island is unearthed continuously, foundation pit supporting is effectively strengthened, and the foundation pit safety problem of synchronous excavation of the foundation pit is effectively solved.
本发明公开了一种复杂环境下大面积超深基坑同步快速开挖的施工方法，将原有基坑角撑+斜抛撑的支护结构形式优化为圆弧撑+对撑+栈桥的支护结构形式，当在确定项目工期紧张，基坑需要同步快速开挖施工的前提后，为了基坑安全，将基坑支护型式修改为圆弧撑+对撑的形式，并在基坑内新增东西方向的出土栈桥及钢筋加工场，基坑开挖顺序为基坑2‑B区域、基坑2‑Aa区域和基坑2‑Ac区域同步开挖，采用岛式开挖方式既能使得支护形式快速形成，又能在支撑施工及养护过程中，中心岛连续出土，基坑支护得到了有效的加强，基坑同步开挖的基坑安全问题得到了有效的解决。
Construction method for synchronously and rapidly excavating large-area ultra-deep foundation pit in complex environment
一种复杂环境下大面积超深基坑同步快速开挖的施工方法
CAO YUNJIA (author) / MIAO ENXIN (author) / WANG ZHENG (author) / QIN HONGZHI (author) / YANG HAIBO (author) / ZHANG ZHI (author) / YAO RUIPING (author) / FENG WUYUN (author)
2023-09-01
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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