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A platform for research: civil engineering, architecture and urbanism
Construction method of novel foundation pit supporting structure suitable for deep and shallow two-stage foundation pits
The invention relates to a construction method of a novel foundation pit supporting structure suitable for deep and shallow two-stage foundation pits, which comprises the following specific steps of: completing construction of a shallow foundation pit support structure, a deep foundation pit support structure and a top beam, and constructing a first horizontal supporting system; excavating to the bottom of the shallow pit, and reinforcing a soil body in a junction area of the deep pit and the shallow pit; a shallow pit junction area bottom plate, a shallow pit support changing plate strip and a second horizontal supporting system are constructed, the shallow pit support changing plate strip and the second horizontal supporting system are anchored together, excavation continues to be conducted to the bottom of the deep pit, and construction of the deep pit bottom plate and bottom plates of other areas of the shallow pit is started; constructing a deep pit replacement supporting plate strip, a structural outer wall and a structural floor slab, dismantling a second horizontal supporting system, and backfilling with gravel soil; and construction of a floor slab support changing plate strip is conducted, gravel soil is adopted for backfilling, the first horizontal supporting system is dismantled, and construction of the underground overall structure is completed. The problem that a deep and shallow foundation pit supporting structure is unstable is solved, and the progress of foundation pit construction is accelerated.
本发明是一种适用于深浅两级基坑的新型基坑支护结构的施工方法，具体步骤为：完成浅基坑围护结构、深基坑围护结构和冠梁施工，施工第一道水平支撑体系；开挖至浅坑坑底，对深浅坑交界区的土体进行加固；施工浅坑交界区底板、浅坑换撑板带和第二道水平支撑体系，将浅坑换撑板带和第二道水平支撑体系锚接在一起，继续开挖至深坑坑底，开始深坑底板、浅坑其它区域底板的施工；施工深坑换撑板带、结构外墙、结构楼板，拆除第二道水平支撑体系，并采用碎石类土回填；进行楼板换撑板带的施工，采用碎石类土回填，拆除第一道水平支撑体系，完成地下整体结构的施工。本发明解决了深浅基坑支护结构发生失稳的难题，加快了基坑施工的进度。
Construction method of novel foundation pit supporting structure suitable for deep and shallow two-stage foundation pits
The invention relates to a construction method of a novel foundation pit supporting structure suitable for deep and shallow two-stage foundation pits, which comprises the following specific steps of: completing construction of a shallow foundation pit support structure, a deep foundation pit support structure and a top beam, and constructing a first horizontal supporting system; excavating to the bottom of the shallow pit, and reinforcing a soil body in a junction area of the deep pit and the shallow pit; a shallow pit junction area bottom plate, a shallow pit support changing plate strip and a second horizontal supporting system are constructed, the shallow pit support changing plate strip and the second horizontal supporting system are anchored together, excavation continues to be conducted to the bottom of the deep pit, and construction of the deep pit bottom plate and bottom plates of other areas of the shallow pit is started; constructing a deep pit replacement supporting plate strip, a structural outer wall and a structural floor slab, dismantling a second horizontal supporting system, and backfilling with gravel soil; and construction of a floor slab support changing plate strip is conducted, gravel soil is adopted for backfilling, the first horizontal supporting system is dismantled, and construction of the underground overall structure is completed. The problem that a deep and shallow foundation pit supporting structure is unstable is solved, and the progress of foundation pit construction is accelerated.
本发明是一种适用于深浅两级基坑的新型基坑支护结构的施工方法，具体步骤为：完成浅基坑围护结构、深基坑围护结构和冠梁施工，施工第一道水平支撑体系；开挖至浅坑坑底，对深浅坑交界区的土体进行加固；施工浅坑交界区底板、浅坑换撑板带和第二道水平支撑体系，将浅坑换撑板带和第二道水平支撑体系锚接在一起，继续开挖至深坑坑底，开始深坑底板、浅坑其它区域底板的施工；施工深坑换撑板带、结构外墙、结构楼板，拆除第二道水平支撑体系，并采用碎石类土回填；进行楼板换撑板带的施工，采用碎石类土回填，拆除第一道水平支撑体系，完成地下整体结构的施工。本发明解决了深浅基坑支护结构发生失稳的难题，加快了基坑施工的进度。
Construction method of novel foundation pit supporting structure suitable for deep and shallow two-stage foundation pits
一种适用于深浅两级基坑的新型基坑支护结构的施工方法
SHI YIAN (author) / LIU XIAOMIN (author) / XUE CHENG (author) / GE LONGBO (author) / ZHANG QIANG (author) / SONG ZIWEN (author) / SONG LIWEI (author)
2023-09-05
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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