Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Open caisson and negative pressure sinking construction process thereof
The invention discloses an open caisson and a negative pressure sinking construction process thereof. The open caisson comprises a well body and a well lid, an inner cavity of the well body is divided into several compartments through vertical partition plates, air bags matched with a well mouth in a seal mode are fixed to the periphery of the well lid, exhaust holes and drainage holes are formed in the positions, corresponding to the compartments, of the well lid, valves are arranged at the exhaust holes, and the drainage holes are connected with a sewage pump through a drainage pipeline. The open caisson structure is prefabricated in a prefabrication factory, and the construction procedures of foundation bed riprapping, foundation bed tamping and foundation bed leveling are not carried out before the open caisson is arranged, so that the overwater construction procedures are reduced, potential safety hazards are reduced, and offshore cover plate cast-in-place concrete after the open caisson is arranged can be reduced; through the connection between the air bags and an upper cover plate, the overall closed space in the sinking process of the open caisson is achieved, and negative-pressure sinking of the open caisson structure is achieved through an air floating platform; and through the air flotation operation platform, negative pressure sinking of the open caisson structure is achieved, and the sinking speed of the open caisson and the height difference after the open caisson enters soil are well controlled.
本发明公开了一种沉井及其负压下沉施工工艺，所述沉井包括井体和井盖，井体内腔通过竖向隔板分隔有若干隔舱，井盖四周固定有与井口密封配合的气囊，每个隔舱对应的井盖上设有排气孔和排水孔，排气孔处装有阀门，排水孔通过排水管道与排污泵连接。本发明所述的沉井结构在预制厂预制，能够实现在沉井安装前不进行基床抛石，基床夯实，基床整平施工工序，减少了水上施工工序，减少安全隐患，还能够减少将沉井安装后海上盖板现浇混凝土，通过气囊与上部盖板之间的连接，实现沉井下沉过程中的整体密闭空间，通过气浮平台实现沉井结构负压下沉；通过气浮操作平台，实现沉井结构负压下沉，更好的控制沉井下沉速率以及入土后的高差。
Open caisson and negative pressure sinking construction process thereof
The invention discloses an open caisson and a negative pressure sinking construction process thereof. The open caisson comprises a well body and a well lid, an inner cavity of the well body is divided into several compartments through vertical partition plates, air bags matched with a well mouth in a seal mode are fixed to the periphery of the well lid, exhaust holes and drainage holes are formed in the positions, corresponding to the compartments, of the well lid, valves are arranged at the exhaust holes, and the drainage holes are connected with a sewage pump through a drainage pipeline. The open caisson structure is prefabricated in a prefabrication factory, and the construction procedures of foundation bed riprapping, foundation bed tamping and foundation bed leveling are not carried out before the open caisson is arranged, so that the overwater construction procedures are reduced, potential safety hazards are reduced, and offshore cover plate cast-in-place concrete after the open caisson is arranged can be reduced; through the connection between the air bags and an upper cover plate, the overall closed space in the sinking process of the open caisson is achieved, and negative-pressure sinking of the open caisson structure is achieved through an air floating platform; and through the air flotation operation platform, negative pressure sinking of the open caisson structure is achieved, and the sinking speed of the open caisson and the height difference after the open caisson enters soil are well controlled.
本发明公开了一种沉井及其负压下沉施工工艺，所述沉井包括井体和井盖，井体内腔通过竖向隔板分隔有若干隔舱，井盖四周固定有与井口密封配合的气囊，每个隔舱对应的井盖上设有排气孔和排水孔，排气孔处装有阀门，排水孔通过排水管道与排污泵连接。本发明所述的沉井结构在预制厂预制，能够实现在沉井安装前不进行基床抛石，基床夯实，基床整平施工工序，减少了水上施工工序，减少安全隐患，还能够减少将沉井安装后海上盖板现浇混凝土，通过气囊与上部盖板之间的连接，实现沉井下沉过程中的整体密闭空间，通过气浮平台实现沉井结构负压下沉；通过气浮操作平台，实现沉井结构负压下沉，更好的控制沉井下沉速率以及入土后的高差。
Open caisson and negative pressure sinking construction process thereof
一种沉井及其负压下沉施工工艺
HUANG PENGJU (Autor:in) / WANG FEI (Autor:in) / LI WU (Autor:in) / ZHANG YUEHUI (Autor:in) / DONG ZHIFANG (Autor:in) / FAN WENBO (Autor:in)
18.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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