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A platform for research: civil engineering, architecture and urbanism
Reinforcing method for construction of foundation pit adjacent to existing elevated line
The invention provides a reinforcement method for construction of a foundation pit adjacent to an existing elevated line, which comprises the following steps: step 1, a pre-grouting pipe group and a plurality of tracking grouting pipe groups are constructed between a foundation pit construction area and the existing elevated line, the pre-grouting pipe group comprises a plurality of first grouting pipes which are distributed left and right at intervals, and the tracking grouting pipe groups comprise a plurality of second grouting pipes which are distributed left and right at intervals; the tracking pipe group comprises a plurality of second grouting pipes which are distributed left and right at intervals, and the pre-grouting pipe group and the tracking grouting pipe groups are sequentially distributed at intervals from front to back; secondly, grouting is conducted on all the first grouting pipes, construction is conducted on the foundation pit, and deformation of the existing elevated line is monitored in the construction process; thirdly, when deformation of the existing elevated line reaches orange early warning, hole separation grouting is conducted on second grouting pipes in all the tracking grouting pipe sets; and 4, when the deformation of the existing elevated line reaches red early warning, grouting is conducted on the remaining second grouting pipes in all the tracking grouting pipe sets. According to the reinforcing method, dynamic reinforcing is achieved, the construction period is shortened, and the construction cost is reduced.
本发明提供了一种紧邻既有高架线基坑施工的加固方法，包括以下步骤：步骤一，在基坑施工区域和既有高架线之间施工一预注浆管组和多个跟踪注浆管组，预注浆管组包括左右间隔分布的多根第一注浆管，跟踪管组包括左右间隔分布的多根第二注浆管，预注浆管组和各跟踪注浆管组自前向后依序间隔分布；步骤二，对各第一注浆管进行注浆，对基坑进行施工，在施工过程中对既有高架线的变形进行监测；步骤三，当既有高架线的变形达到橙色预警时，对各跟踪注浆管组中的第二注浆管进行隔孔注浆；步骤四，当既有高架线的变形达到红色预警时，对各跟踪注浆管组中的剩余第二注浆管进行注浆。本加固方法实现了动态加固，有助于节约工期和降低施工成本。
Reinforcing method for construction of foundation pit adjacent to existing elevated line
The invention provides a reinforcement method for construction of a foundation pit adjacent to an existing elevated line, which comprises the following steps: step 1, a pre-grouting pipe group and a plurality of tracking grouting pipe groups are constructed between a foundation pit construction area and the existing elevated line, the pre-grouting pipe group comprises a plurality of first grouting pipes which are distributed left and right at intervals, and the tracking grouting pipe groups comprise a plurality of second grouting pipes which are distributed left and right at intervals; the tracking pipe group comprises a plurality of second grouting pipes which are distributed left and right at intervals, and the pre-grouting pipe group and the tracking grouting pipe groups are sequentially distributed at intervals from front to back; secondly, grouting is conducted on all the first grouting pipes, construction is conducted on the foundation pit, and deformation of the existing elevated line is monitored in the construction process; thirdly, when deformation of the existing elevated line reaches orange early warning, hole separation grouting is conducted on second grouting pipes in all the tracking grouting pipe sets; and 4, when the deformation of the existing elevated line reaches red early warning, grouting is conducted on the remaining second grouting pipes in all the tracking grouting pipe sets. According to the reinforcing method, dynamic reinforcing is achieved, the construction period is shortened, and the construction cost is reduced.
本发明提供了一种紧邻既有高架线基坑施工的加固方法，包括以下步骤：步骤一，在基坑施工区域和既有高架线之间施工一预注浆管组和多个跟踪注浆管组，预注浆管组包括左右间隔分布的多根第一注浆管，跟踪管组包括左右间隔分布的多根第二注浆管，预注浆管组和各跟踪注浆管组自前向后依序间隔分布；步骤二，对各第一注浆管进行注浆，对基坑进行施工，在施工过程中对既有高架线的变形进行监测；步骤三，当既有高架线的变形达到橙色预警时，对各跟踪注浆管组中的第二注浆管进行隔孔注浆；步骤四，当既有高架线的变形达到红色预警时，对各跟踪注浆管组中的剩余第二注浆管进行注浆。本加固方法实现了动态加固，有助于节约工期和降低施工成本。
Reinforcing method for construction of foundation pit adjacent to existing elevated line
一种紧邻既有高架线基坑施工的加固方法
LIU ZHAO (author) / MO CHENG (author) / NI PAI (author) / ZHOU HAIHUA (author) / YANG FEI (author) / LI YAJUN (author) / ZHANG LEI (author) / PAN CHUTIAN (author)
2024-09-03
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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