Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Foundation pit composite enclosure structure crossing over existing underground structure and construction method of foundation pit composite enclosure structure
The invention provides a foundation pit composite enclosure structure crossing over an existing underground structure and a construction method of the foundation pit composite enclosure structure. Thefoundation pit composite enclosure structure comprises conventional underground continuous walls buried in two opposite sides of the existing underground structure, a warped underground continuous wall and a freezing wall, wherein the warped underground continuous wall crosses over the existing underground structure and is connected between the two ends of the conventional underground continuouswalls on the two opposite sides of the existing underground structure, a notch is formed in the lower portion of the warped underground continuous wall, and the existing underground structure is arranged in the notch in a penetrating manner; and the freezing wall is used for sealing the notch, freezing pipes are laid on the outer side of the warped underground continuous wall, freezing media are arranged in the freezing pipes, and the freezing media wrap a soil body on the periphery of the freezing pipes through the freezing pipes so as to be solidified to form the freezing wall attached to the warped underground continuous wall. The problems that when a foundation pit engineering located in a water-rich stratum of a soft soil area crosses over an existing structure, a completely-closed enclosure structure cannot be formed by adopting a conventional construction method, and the soil retaining and water resisting effects cannot be achieved are solved.
本发明提供了一种上跨既有地下构筑物的基坑复合围护结构及其施工方法，该结构包括：常规幅地连墙，埋设于既有地下构筑物的相对两侧；翘脚幅地连墙，横跨既有地下构筑物且连接于既有地下构筑物的相对两侧的常规幅地连墙的两端之间，翘脚幅地连墙的下部形成有缺口，既有地下构筑物穿设于缺口中；以及用于封闭缺口的冻结壁，翘脚幅地连墙的外侧敷设有冻结管，冻结管中置有冻结介质，冻结介质经由冻结管包覆于冻结管周边的土体以固结形成贴合于翘脚幅地连墙的冻结壁。本发明解决了当位于软土地区富水地层的基坑工程上跨既有构筑物时，采用常规的施工方法无法形成完全封闭的围护结构，无法发挥挡土隔水作用的问题。
Foundation pit composite enclosure structure crossing over existing underground structure and construction method of foundation pit composite enclosure structure
The invention provides a foundation pit composite enclosure structure crossing over an existing underground structure and a construction method of the foundation pit composite enclosure structure. Thefoundation pit composite enclosure structure comprises conventional underground continuous walls buried in two opposite sides of the existing underground structure, a warped underground continuous wall and a freezing wall, wherein the warped underground continuous wall crosses over the existing underground structure and is connected between the two ends of the conventional underground continuouswalls on the two opposite sides of the existing underground structure, a notch is formed in the lower portion of the warped underground continuous wall, and the existing underground structure is arranged in the notch in a penetrating manner; and the freezing wall is used for sealing the notch, freezing pipes are laid on the outer side of the warped underground continuous wall, freezing media are arranged in the freezing pipes, and the freezing media wrap a soil body on the periphery of the freezing pipes through the freezing pipes so as to be solidified to form the freezing wall attached to the warped underground continuous wall. The problems that when a foundation pit engineering located in a water-rich stratum of a soft soil area crosses over an existing structure, a completely-closed enclosure structure cannot be formed by adopting a conventional construction method, and the soil retaining and water resisting effects cannot be achieved are solved.
本发明提供了一种上跨既有地下构筑物的基坑复合围护结构及其施工方法，该结构包括：常规幅地连墙，埋设于既有地下构筑物的相对两侧；翘脚幅地连墙，横跨既有地下构筑物且连接于既有地下构筑物的相对两侧的常规幅地连墙的两端之间，翘脚幅地连墙的下部形成有缺口，既有地下构筑物穿设于缺口中；以及用于封闭缺口的冻结壁，翘脚幅地连墙的外侧敷设有冻结管，冻结管中置有冻结介质，冻结介质经由冻结管包覆于冻结管周边的土体以固结形成贴合于翘脚幅地连墙的冻结壁。本发明解决了当位于软土地区富水地层的基坑工程上跨既有构筑物时，采用常规的施工方法无法形成完全封闭的围护结构，无法发挥挡土隔水作用的问题。
Foundation pit composite enclosure structure crossing over existing underground structure and construction method of foundation pit composite enclosure structure
上跨既有地下构筑物的基坑复合围护结构及其施工方法
PEI LIEFENG (Autor:in) / PAN WEIQIANG (Autor:in) / DU YI (Autor:in) / ZHU YING (Autor:in) / ZHENG HAILIN (Autor:in) / HAN YAHAI (Autor:in) / SONG YINGHAO (Autor:in) / ZHANG YEQING (Autor:in) / DAI SHENG (Autor:in)
10.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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