本文主要介绍上海高桥地下热电厂主厂房大型沉井结构的设计,并扼要介绍沉井施工技术。沉井为圆形,外径68米,面积3630平方米,高28.5米,重4万多吨。该厂于1972年建成正式投产,它是目前我国最大的地下热电厂,主厂房沉井也是当时国内最大的沉井结构,经过长期运行和观测表明情况良好。 This article mainly introduces the design of large-scale caisson structure in the main plant of Shanghai Takahashi underground thermal power plant and briefly introduces the caisson construction technology. Caisson is circular, the outer diameter of 68 meters, an area of ​​3630 square meters, 28.5 meters high, weighing more than 40,000 tons. The plant was officially put into operation in 1972, it is currently the largest underground thermal power plant in China, and the main plant caisson is also the largest caisson structure in the country at that time. After long-term operation and observation, it is in good condition.