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一、引子 江南大桥是广(州)深(圳)公路上最长的桥梁,主桥墩台全部采用沉井基础,其中1~2、2~2墩为浮运钢壳沉井。浮运钢壳沉井是一种值得探讨的沉井型式,本文将就江南大桥2~#沉井的施工情况作一简单介绍,内容包括预制场的选择、预制、下水、定位、井壁混凝土的灌注等,开始下沉以后接高等各工序与普通钢筋混凝土沉井施工相同,此处不再赘述。 沉井结构如图1所示。
I. Introduction The Yangtze River Bridge is the longest bridge on the Guang (State) Shenzhen (Shenzhen) highway. The main bridge piers all use the caisson foundation, of which 1 ~ 2,2 ~ 2 piers are the floating steel caisson. This paper will make a brief introduction on the construction of 2 ~ # caisson in Jiangnan Bridge, including the selection of prefabricated yard, prefabrication, launching, location, side wall concrete Of the perfusion, etc., after the start of the sink followed by high-rise ordinary steel caisson construction process and the same, not repeat them here. Caisson structure shown in Figure 1.