Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for foundation pit support under foundation pit penetrated by existing structure
The invention discloses a construction method of a foundation pit support under an existing structure penetrating through a foundation pit, and the method specifically comprises the following steps: S1, determining the position of the existing structure in the foundation pit, and arranging double-shaft stirring piles above the existing structure; s2, a crown beam is installed on the double-shaft stirring pile, S3, a first layer of skin earthwork is excavated, and a first layer of steel floral tube soil nails and hanging net anchor shotcreting are constructed on the first layer of skin earthwork; s4, excavating a second layer of earthwork, constructing a second layer of steel floral tube soil nails on the second layer of earthwork, and hanging a net for anchoring and shotcreting; s5, lower-layer earth excavation continues, sloping construction is conducted to the position above the existing building, and a supporting structure of the position of the existing building is completed; and S6, soil bodies on the two sides of the existing building are excavated, supporting construction is conducted, and foundation pit supporting construction is completed. The three-in-one supporting system is formed through rigid connection of the internally-inserted steel pipes, the steel floral tube soil nails and the adjacent secant piles, and the rigidity of the supporting system is greatly improved.
本发明公开了一种既有构筑物穿越基坑下的基坑支护的施工方法，该方法具体包括如下步骤：S1，确定基坑中的既有构筑物的位置，在既有构筑物上方进行双轴搅拌桩的布置；S2，将冠梁安装在双轴搅拌桩上，S3，开挖第一层皮土方，并在第一层皮土方上施工第一层钢花管土钉，挂网锚喷；S4，开挖第二皮土方，并在第二层皮土方上施工第二层钢花管土钉，挂网锚喷；S5，继续下层土方开挖，并进行放坡施工至既有建筑物上方，完成既有建筑物位置的支护构造；S6，对既有建筑物两侧的土体进行开挖并进行支护构造，完成基坑支护构造。本发明通过内插钢管、钢花管土钉与邻近咬合桩刚性连接形成的三位一体的支护体系，极大提高支撑体系的刚度。
Construction method for foundation pit support under foundation pit penetrated by existing structure
The invention discloses a construction method of a foundation pit support under an existing structure penetrating through a foundation pit, and the method specifically comprises the following steps: S1, determining the position of the existing structure in the foundation pit, and arranging double-shaft stirring piles above the existing structure; s2, a crown beam is installed on the double-shaft stirring pile, S3, a first layer of skin earthwork is excavated, and a first layer of steel floral tube soil nails and hanging net anchor shotcreting are constructed on the first layer of skin earthwork; s4, excavating a second layer of earthwork, constructing a second layer of steel floral tube soil nails on the second layer of earthwork, and hanging a net for anchoring and shotcreting; s5, lower-layer earth excavation continues, sloping construction is conducted to the position above the existing building, and a supporting structure of the position of the existing building is completed; and S6, soil bodies on the two sides of the existing building are excavated, supporting construction is conducted, and foundation pit supporting construction is completed. The three-in-one supporting system is formed through rigid connection of the internally-inserted steel pipes, the steel floral tube soil nails and the adjacent secant piles, and the rigidity of the supporting system is greatly improved.
本发明公开了一种既有构筑物穿越基坑下的基坑支护的施工方法，该方法具体包括如下步骤：S1，确定基坑中的既有构筑物的位置，在既有构筑物上方进行双轴搅拌桩的布置；S2，将冠梁安装在双轴搅拌桩上，S3，开挖第一层皮土方，并在第一层皮土方上施工第一层钢花管土钉，挂网锚喷；S4，开挖第二皮土方，并在第二层皮土方上施工第二层钢花管土钉，挂网锚喷；S5，继续下层土方开挖，并进行放坡施工至既有建筑物上方，完成既有建筑物位置的支护构造；S6，对既有建筑物两侧的土体进行开挖并进行支护构造，完成基坑支护构造。本发明通过内插钢管、钢花管土钉与邻近咬合桩刚性连接形成的三位一体的支护体系，极大提高支撑体系的刚度。
Construction method for foundation pit support under foundation pit penetrated by existing structure
一种既有构筑物穿越基坑下的基坑支护的施工方法
SONG CHUNRONG (Autor:in) / NING BIN (Autor:in) / GONG WEI (Autor:in) / HUANG YUWANG (Autor:in) / CHEN CHUTAO (Autor:in) / DONG JIANFENG (Autor:in)
10.05.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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