Caisson (engineering)

（重定向自Pneumatic caissons）

Schematic cross section of a pressurized caisson

A diagram of an open caisson, devised by Jules Triger, dated 1846

In geotechnical engineering, a caisson (/ˈkeɪsən/ or /ˈkeɪsɒn/) is a watertight retaining structure used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, or for the repair of ships. These are constructed such that the water can be pumped out, keeping the working environment dry. When piers are to be built using an open caisson and it is not practical to reach suitable soil, friction pilings may be driven to form a suitable sub-foundation. These piles are connected by a foundation pad upon which the column pier is erected.

单词	Pneumatic caissons
释义	Pneumatic caissons 原声例句 TED-Ed（视频版） Building on the rocky river bed involved the use of a largely untested technology: pneumatic caissons. 在多岩石的河床上建造建筑涉及使用一种基本上未经检验的技术：气动沉箱。英语百科 Caisson (engineering) （重定向自Pneumatic caissons） In geotechnical engineering, a caisson (/ˈkeɪsən/ or /ˈkeɪsɒn/) is a watertight retaining structure used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, or for the repair of ships. These are constructed such that the water can be pumped out, keeping the working environment dry. When piers are to be built using an open caisson and it is not practical to reach suitable soil, friction pilings may be driven to form a suitable sub-foundation. These piles are connected by a foundation pad upon which the column pier is erected.
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