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Open caisson foundation of superimposed submerged continuous wall and construction method of open caisson foundation
The open caisson foundation comprises an open caisson provided with a well wall and the continuous wall located below the well wall and connected with the well wall, and the bottom of the continuous wall is located below a local scouring line; the continuous wall is of a double-thin-wall cylindrical structure and comprises an outer wall plate, an inner wall plate and a plurality of partition plates located between the outer wall plate and the inner wall plate and connecting the outer wall plate and the inner wall plate. The continuous wall is overlapped below an existing open caisson, on one hand, the bottom of the continuous wall is located below a local scouring line, bearing foundation soil below a bottom plate of the open caisson is isolated from water flow, scouring and scouring of the bearing foundation soil are avoided, and the construction difficulty and the risk of sand casting and sudden sinking accidents during soil taking are reduced; and on the other hand, the well wall and the continuous wall jointly provide stable support for the soil body on the outer side of the well wall, the soil body is completely isolated from soil taking construction in the well, and the problem that sand casting sudden sinking accidents are likely to happen during conventional open caisson sinking construction is solved.
本申请涉及一种叠合沉入式连续墙的沉井基础，其包括设有井壁的沉井、位于井壁下方并与井壁连接的连续墙，连续墙的底部位于局部冲刷线以下；连续墙为双薄壁筒形结构，包括外壁板、内壁板、以及位于外壁板和内壁板之间并将二者连接的若干隔板。本发明在现有沉井的下方叠合了连续墙，一方面，连续墙的底部位于局部冲刷线以下，将沉井底板下的持力地基土与水流隔离，使其不会发生冲刷淘蚀，降低了施工难度和取土时发生翻砂突沉事故的风险；另一方面，井壁和连续墙共同为井壁外侧的土体提供稳固支撑，将其与井内取土施工完全隔离，解决了常规沉井下沉施工时易发生翻砂突沉事故的问题。
Open caisson foundation of superimposed submerged continuous wall and construction method of open caisson foundation
The open caisson foundation comprises an open caisson provided with a well wall and the continuous wall located below the well wall and connected with the well wall, and the bottom of the continuous wall is located below a local scouring line; the continuous wall is of a double-thin-wall cylindrical structure and comprises an outer wall plate, an inner wall plate and a plurality of partition plates located between the outer wall plate and the inner wall plate and connecting the outer wall plate and the inner wall plate. The continuous wall is overlapped below an existing open caisson, on one hand, the bottom of the continuous wall is located below a local scouring line, bearing foundation soil below a bottom plate of the open caisson is isolated from water flow, scouring and scouring of the bearing foundation soil are avoided, and the construction difficulty and the risk of sand casting and sudden sinking accidents during soil taking are reduced; and on the other hand, the well wall and the continuous wall jointly provide stable support for the soil body on the outer side of the well wall, the soil body is completely isolated from soil taking construction in the well, and the problem that sand casting sudden sinking accidents are likely to happen during conventional open caisson sinking construction is solved.
本申请涉及一种叠合沉入式连续墙的沉井基础，其包括设有井壁的沉井、位于井壁下方并与井壁连接的连续墙，连续墙的底部位于局部冲刷线以下；连续墙为双薄壁筒形结构，包括外壁板、内壁板、以及位于外壁板和内壁板之间并将二者连接的若干隔板。本发明在现有沉井的下方叠合了连续墙，一方面，连续墙的底部位于局部冲刷线以下，将沉井底板下的持力地基土与水流隔离，使其不会发生冲刷淘蚀，降低了施工难度和取土时发生翻砂突沉事故的风险；另一方面，井壁和连续墙共同为井壁外侧的土体提供稳固支撑，将其与井内取土施工完全隔离，解决了常规沉井下沉施工时易发生翻砂突沉事故的问题。
Open caisson foundation of superimposed submerged continuous wall and construction method of open caisson foundation
一种叠合沉入式连续墙的沉井基础及其施工方法
SU CHUANHAI (author) / YANG CANWEN (author) / DU XUN (author) / CHEN YU (author)
2023-04-04
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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