A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Deep foundation pit row pile combined artificial freezing waterproof construction method
The invention provides a row pile combined artificial freezing waterproof construction method for a deep foundation pit, which belongs to the technical field of foundation pit construction and comprises the following steps: adopting a subarea excavation and layered freezing mode to ensure that a first excavation area is normal unfrozen soil and a second excavation area below the first excavation area is kept in a frozen state during excavation; meanwhile, normal unfrozen soil exists in a third excavation area and below the second excavation area, when construction of the second excavation area is started after construction of the first excavation area is finished, the soil body of the third excavation area is kept in a frozen state, and circulation is conducted in sequence till the bottom of the foundation pit is excavated; according to the method, the mode that partition excavation is combined with layered freezing is adopted, two freezing pipes of different structures are adopted at the same time, and layered freezing is conducted while segmented excavation is conducted, so that water is effectively prevented from entering the foundation pit from the outer side, and water inrush of the lower portion of the foundation pit is prevented; and a closing device capable of controlling the switch is arranged at the bottom of the sleeve, so that underground water is prevented from rushing into a drill hole when the drilling machine is pulled out.
本发明提供了一种用于深基坑排桩联合人工冻结防水施工方法，所属基坑施工技术领域，包括：采用分区开挖分层冻结的方式，使开挖时第一开挖区为正常未冻结土，第一开挖区以下第二开挖区保持冻结状态，同时第二开挖区以下第三开挖区及以下为正常未冻结土，第一开挖区施工结束开始对第二开挖区施工时，第三开挖区的土体保持冻结状态，依次循环，直到开挖到基坑底部；该方法采用分区开挖结合分层冻结的方式，并同时采用两种不同结构的冻结管，在实施分段开挖的同时分层冻结，从而有效防止水从外侧进入基坑内，并防止基坑下部水的突涌；且在套管的底部设置有可控制开关的闭合装置，从而防止在抽出钻机时，地下水涌入钻孔内。
Deep foundation pit row pile combined artificial freezing waterproof construction method
The invention provides a row pile combined artificial freezing waterproof construction method for a deep foundation pit, which belongs to the technical field of foundation pit construction and comprises the following steps: adopting a subarea excavation and layered freezing mode to ensure that a first excavation area is normal unfrozen soil and a second excavation area below the first excavation area is kept in a frozen state during excavation; meanwhile, normal unfrozen soil exists in a third excavation area and below the second excavation area, when construction of the second excavation area is started after construction of the first excavation area is finished, the soil body of the third excavation area is kept in a frozen state, and circulation is conducted in sequence till the bottom of the foundation pit is excavated; according to the method, the mode that partition excavation is combined with layered freezing is adopted, two freezing pipes of different structures are adopted at the same time, and layered freezing is conducted while segmented excavation is conducted, so that water is effectively prevented from entering the foundation pit from the outer side, and water inrush of the lower portion of the foundation pit is prevented; and a closing device capable of controlling the switch is arranged at the bottom of the sleeve, so that underground water is prevented from rushing into a drill hole when the drilling machine is pulled out.
本发明提供了一种用于深基坑排桩联合人工冻结防水施工方法，所属基坑施工技术领域，包括：采用分区开挖分层冻结的方式，使开挖时第一开挖区为正常未冻结土，第一开挖区以下第二开挖区保持冻结状态，同时第二开挖区以下第三开挖区及以下为正常未冻结土，第一开挖区施工结束开始对第二开挖区施工时，第三开挖区的土体保持冻结状态，依次循环，直到开挖到基坑底部；该方法采用分区开挖结合分层冻结的方式，并同时采用两种不同结构的冻结管，在实施分段开挖的同时分层冻结，从而有效防止水从外侧进入基坑内，并防止基坑下部水的突涌；且在套管的底部设置有可控制开关的闭合装置，从而防止在抽出钻机时，地下水涌入钻孔内。
Deep foundation pit row pile combined artificial freezing waterproof construction method
一种用于深基坑排桩联合人工冻结防水施工方法
LIU XINGYAN (author) / HE YAKUN (author) / LIU ENLONG (author) / YANG BAOCUN (author) / CHENG JIANJUN (author) / LI QINGLIN (author) / WANG NING (author) / PAN QIANTONG (author) / DUAN TAO (author) / WANG WEI (author)
2024-03-15
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Waterproof construction method of tubular pile foundation
| European Patent Office | 2022
Construction method of combined assembly type deep foundation pile
| European Patent Office | 2021
Building foundation pile head waterproof structure and construction method thereof
| European Patent Office | 2022
Building foundation pile head waterproof structure and construction method thereof
| European Patent Office | 2024
Deep foundation pit corner waterproof construction method
| European Patent Office | 2020