A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Deep foundation pit excavation and support construction method
The invention relates to a deep foundation pit excavation and support construction method. The method comprises the following steps that (1) construction preparation is conducted; (2) a foundation pit is excavated and a drainage system is constructed, earth and stone are excavated in a circulating mode in the mode of top-down, vertical layering, longitudinal segmentation and transverse blocking with machinery as the main part and manpower as the auxiliary part, after each layer of earth and stone is excavated, anchor rod supporting construction, steel sheet pile supporting construction and steel supporting system construction are conducted on a slope face in time, and when the earth and stone are excavated till the elevation away from the foundation is smaller than 30 cm, the foundation pit is excavated; manually excavating to the bottom of the foundation pit; (3) a circular pipe culvert foundation structure is constructed, and a circular pipe culvert is installed; (4) backfilling the foundation pit; and (5) pulling out the steel sheet pile, and timely backfilling stone chips into a pile hole left after the pile is pulled out. According to the method, anchor rod supporting is conducted in time after excavation, construction of steel sheet pile supporting is matched, underground water inrush is blocked, the water stopping effect is achieved, the steel supporting system supports while excavation is conducted, the exposure time after soil excavation is shortened, and the safety and stability of foundation pit construction are improved.
本发明涉及一种深基坑开挖及支护施工方法，包括以下步骤：1)、施工准备；2)、基坑开挖及施工排水系统，采用自上而下、竖向分层、纵向分段、横向分块的方式，以机械为主、人工为辅循环开挖土石方，每层土石方开挖后，及时对边坡面进行锚杆支护施工，施工钢板桩支护，施工钢支撑体系，开挖土石方至距基底标高小于30cm时，人工开挖至基坑底；3)、圆管涵基础结构施工，圆管涵安装；4)、基坑回填；5)、拔出钢板桩，拔桩后留下的桩孔，及时回填石屑。本发明开挖后及时进行锚杆支护，配合施工钢板桩支护，阻断地下水涌入，起到止水的效果，钢支撑体系，随挖随撑，减少土体开挖后的暴露时间，提高了基坑施工的安全性、稳定性。
Deep foundation pit excavation and support construction method
The invention relates to a deep foundation pit excavation and support construction method. The method comprises the following steps that (1) construction preparation is conducted; (2) a foundation pit is excavated and a drainage system is constructed, earth and stone are excavated in a circulating mode in the mode of top-down, vertical layering, longitudinal segmentation and transverse blocking with machinery as the main part and manpower as the auxiliary part, after each layer of earth and stone is excavated, anchor rod supporting construction, steel sheet pile supporting construction and steel supporting system construction are conducted on a slope face in time, and when the earth and stone are excavated till the elevation away from the foundation is smaller than 30 cm, the foundation pit is excavated; manually excavating to the bottom of the foundation pit; (3) a circular pipe culvert foundation structure is constructed, and a circular pipe culvert is installed; (4) backfilling the foundation pit; and (5) pulling out the steel sheet pile, and timely backfilling stone chips into a pile hole left after the pile is pulled out. According to the method, anchor rod supporting is conducted in time after excavation, construction of steel sheet pile supporting is matched, underground water inrush is blocked, the water stopping effect is achieved, the steel supporting system supports while excavation is conducted, the exposure time after soil excavation is shortened, and the safety and stability of foundation pit construction are improved.
本发明涉及一种深基坑开挖及支护施工方法，包括以下步骤：1)、施工准备；2)、基坑开挖及施工排水系统，采用自上而下、竖向分层、纵向分段、横向分块的方式，以机械为主、人工为辅循环开挖土石方，每层土石方开挖后，及时对边坡面进行锚杆支护施工，施工钢板桩支护，施工钢支撑体系，开挖土石方至距基底标高小于30cm时，人工开挖至基坑底；3)、圆管涵基础结构施工，圆管涵安装；4)、基坑回填；5)、拔出钢板桩，拔桩后留下的桩孔，及时回填石屑。本发明开挖后及时进行锚杆支护，配合施工钢板桩支护，阻断地下水涌入，起到止水的效果，钢支撑体系，随挖随撑，减少土体开挖后的暴露时间，提高了基坑施工的安全性、稳定性。
Deep foundation pit excavation and support construction method
一种深基坑开挖及支护施工方法
FENG KE (author) / GONG CHANGJUN (author) / GAO XIANG (author) / PAN JIAHUI (author) / PENG LUO (author) / LI KUNYIN (author) / CHEN QIANG (author) / CHENG ZHAOWEI (author) / SUN XINGHUA (author)
2023-11-14
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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