A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Underground space excavation method in anchoring area range of existing anchor rod or anchor cable
The invention provides a method for excavating an underground space within an anchoring area range of an existing anchor rod or anchor cable. The method comprises the following steps that S1, first fender posts and second fender posts embedded into a potential slip crack surface of an original foundation pit are symmetrically constructed on the two sides of an area to be excavated; s2, connecting cross beams are constructed between the top ends of the adjacent existing fender posts and the top ends of the first fender posts, first top beams are constructed between the two adjacent first fender posts, second top beams are constructed between the two adjacent second fender posts, and transverse supports are constructed between the first fender posts and the second fender posts which are opposite; and S3, the to-be-excavated area is excavated, new anchor rods or anchor cables are constructed on the side, away from the existing anchoring area, of the excavated area or the peripheral side of the second fender post, and then the existing anchor rods or anchor cables driven into the to-be-excavated area are broken in a one-by-one mode. The existing anchor rod or anchor cable anchoring area and the newly-built fender post structure form a whole and are cooperatively stressed, so that the effectiveness of the existing fender post structure is ensured, the stability of the newly-built structure is ensured, and the engineering risk is reduced.
本发明提供的既有锚杆或锚索锚固区范围内地下空间开挖方法，包括如下步骤：S1、于待开挖区两侧对称地施作第一围护桩和嵌入原基坑潜在滑裂面的第二围护桩；S2、在相邻既有围护桩与第一围护桩顶端间施作连系横梁，在相邻两第一围护桩间施作第一冠梁，在相邻两第二围护桩间施作第二冠梁，在相对的第一围护桩与第二围护桩间施作横向支撑；S3、开挖待开挖区，并在开挖区远离既有锚固区一侧或第二围护桩周侧施作新的锚杆或锚索，之后逐根破拆打入待开挖区的既有锚杆或锚索。使得既有锚杆或锚索锚固区与新建围护桩结构形成一个整体，协同受力，既保证了既有围护结构的有效性，又确保了新建结构的稳定性，降低了工程风险。
Underground space excavation method in anchoring area range of existing anchor rod or anchor cable
The invention provides a method for excavating an underground space within an anchoring area range of an existing anchor rod or anchor cable. The method comprises the following steps that S1, first fender posts and second fender posts embedded into a potential slip crack surface of an original foundation pit are symmetrically constructed on the two sides of an area to be excavated; s2, connecting cross beams are constructed between the top ends of the adjacent existing fender posts and the top ends of the first fender posts, first top beams are constructed between the two adjacent first fender posts, second top beams are constructed between the two adjacent second fender posts, and transverse supports are constructed between the first fender posts and the second fender posts which are opposite; and S3, the to-be-excavated area is excavated, new anchor rods or anchor cables are constructed on the side, away from the existing anchoring area, of the excavated area or the peripheral side of the second fender post, and then the existing anchor rods or anchor cables driven into the to-be-excavated area are broken in a one-by-one mode. The existing anchor rod or anchor cable anchoring area and the newly-built fender post structure form a whole and are cooperatively stressed, so that the effectiveness of the existing fender post structure is ensured, the stability of the newly-built structure is ensured, and the engineering risk is reduced.
本发明提供的既有锚杆或锚索锚固区范围内地下空间开挖方法，包括如下步骤：S1、于待开挖区两侧对称地施作第一围护桩和嵌入原基坑潜在滑裂面的第二围护桩；S2、在相邻既有围护桩与第一围护桩顶端间施作连系横梁，在相邻两第一围护桩间施作第一冠梁，在相邻两第二围护桩间施作第二冠梁，在相对的第一围护桩与第二围护桩间施作横向支撑；S3、开挖待开挖区，并在开挖区远离既有锚固区一侧或第二围护桩周侧施作新的锚杆或锚索，之后逐根破拆打入待开挖区的既有锚杆或锚索。使得既有锚杆或锚索锚固区与新建围护桩结构形成一个整体，协同受力，既保证了既有围护结构的有效性，又确保了新建结构的稳定性，降低了工程风险。
Underground space excavation method in anchoring area range of existing anchor rod or anchor cable
既有锚杆或锚索锚固区范围内地下空间开挖方法
ZOU GUANGJIONG (author) / ZHOU JIE (author) / PENG HUI (author) / CHENG BO (author) / WANG SHAOHENG (author) / HU QIAN (author) / MEI LESHENG (author) / GAO FENG (author) / YI YI (author) / CHENG JIAN (author)
2024-01-05
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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