A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Layered and segmented earth excavation method for oversized foundation pit
The invention discloses a layered and segmented earth excavation method for a super-large foundation pit, which comprises the following steps: step 1, constructing a first layer of diagonal bracings and diagonal bracings before excavation, excavating earth in a central area and a peripheral area of the first layer of the foundation pit, and constructing a plurality of unearthed ramps at the edge of the foundation pit; step 2, after the excavation of the first layer of foundation pit is completed, constructing a second layer of diagonal bracings, sequentially constructing the diagonal bracings on the two sides, excavating a second layer of peripheral area, and then excavating earthwork of a second layer of central area; thirdly, after the foundation pit on the upper layer is excavated, the second step is repeated to excavate the foundation pit on the lower layer till the foundation pit on the last but one layer is constructed; and fourthly, after construction of the foundation pit of the last but one layer is completed, the last layer of diagonal bracings is constructed, earthwork of the central area of the last layer is excavated, then the diagonal bracings on the two sides are sequentially constructed, and earthwork of the peripheral area is excavated. The construction process is smooth and orderly, the construction cost is saved, the construction steps are reasonable and orderly, the foundation pit is not prone to deformation and high in stability in the excavation process, the construction safety is improved, and the hidden danger of collapse is eradicated.
本发明公开了一种超大基坑分层分段土方开挖方法，包括以下步骤：步骤一、开挖前施工第一层对撑和斜撑，开挖基坑第一层中心区和周边区土方，并在基坑边缘搭建若干出土坡道；步骤二、第一层基坑开挖完成后，施工第二层对撑，依次施工两侧的斜撑并开挖第二层周边区，随后开挖第二层中心区土方；步骤三、上一层基坑开挖完成后，重复步骤二开挖下一层基坑，直至施工完倒数第二层基坑；步骤四、倒数第二层基坑施工完成后，施工最后一层对撑，开挖最后一层中心区土方，随后依次施工两侧的斜撑并开挖周边区土方。本发明施工过程流畅有序，节省了施工成本，施工步骤合理有序，开挖过程中基坑不易变形，稳定性高，提高了施工安全性，杜绝坍塌隐患。
Layered and segmented earth excavation method for oversized foundation pit
The invention discloses a layered and segmented earth excavation method for a super-large foundation pit, which comprises the following steps: step 1, constructing a first layer of diagonal bracings and diagonal bracings before excavation, excavating earth in a central area and a peripheral area of the first layer of the foundation pit, and constructing a plurality of unearthed ramps at the edge of the foundation pit; step 2, after the excavation of the first layer of foundation pit is completed, constructing a second layer of diagonal bracings, sequentially constructing the diagonal bracings on the two sides, excavating a second layer of peripheral area, and then excavating earthwork of a second layer of central area; thirdly, after the foundation pit on the upper layer is excavated, the second step is repeated to excavate the foundation pit on the lower layer till the foundation pit on the last but one layer is constructed; and fourthly, after construction of the foundation pit of the last but one layer is completed, the last layer of diagonal bracings is constructed, earthwork of the central area of the last layer is excavated, then the diagonal bracings on the two sides are sequentially constructed, and earthwork of the peripheral area is excavated. The construction process is smooth and orderly, the construction cost is saved, the construction steps are reasonable and orderly, the foundation pit is not prone to deformation and high in stability in the excavation process, the construction safety is improved, and the hidden danger of collapse is eradicated.
本发明公开了一种超大基坑分层分段土方开挖方法，包括以下步骤：步骤一、开挖前施工第一层对撑和斜撑，开挖基坑第一层中心区和周边区土方，并在基坑边缘搭建若干出土坡道；步骤二、第一层基坑开挖完成后，施工第二层对撑，依次施工两侧的斜撑并开挖第二层周边区，随后开挖第二层中心区土方；步骤三、上一层基坑开挖完成后，重复步骤二开挖下一层基坑，直至施工完倒数第二层基坑；步骤四、倒数第二层基坑施工完成后，施工最后一层对撑，开挖最后一层中心区土方，随后依次施工两侧的斜撑并开挖周边区土方。本发明施工过程流畅有序，节省了施工成本，施工步骤合理有序，开挖过程中基坑不易变形，稳定性高，提高了施工安全性，杜绝坍塌隐患。
Layered and segmented earth excavation method for oversized foundation pit
一种超大基坑分层分段土方开挖方法
LEI PENG (author) / QIN LIN (author) / HUANG GANG (author) / YIN QIANCHAO (author) / XIA ZHENGPING (author) / YAN JIANLONG (author) / ZHANG YAKUN (author) / HONG HAO (author) / LIU CHUANG (author) / LI RUICHAO (author)
2023-03-31
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
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Gründungen