天津市滨海新区中央大道海河隧道穿越海河,采用沉管法施工工艺。由于位于内河上施工,其管段浮运和沉放与传统海上或者江河上沉管施工有较大差异。从管段浮运、二次舾装、沉放、初步对接、拉合、基底注浆和回填覆盖等施工工艺上,开辟了一条简单、实际可行的沉管隧道浮运沉放新技术路径。 Central Avenue, Binhai New Area, Tianjin Haihe tunnel through the Haihe River, the use of immersed tube construction process. Due to the construction on the inland river, there is a big difference between the floatation and sinking of the pipe section and the construction of the sinking pipe at the traditional sea or the river. A simple, practical and feasible new approach to the sinking and sinking of immersed tunnels has been opened up from the construction technology such as the floatation of the pipe sections, the second outfitting, the sinking, the preliminary docking, the pull-in, the base grouting and the backfill covering.