摘要
隧道工程地质条件复杂,对工程防水、抗渗及在不同侵蚀条件下工程寿命要求很高。沉管隧道工程中的管段为大体积混凝土构件,结构形式较为复杂。由于混凝土水化热的原因,管段制作过程中的温度裂缝控制较难,从而削弱了沉管管段的抗裂、抗渗和耐久性。针对国内外沉管隧道工程,以结构混凝土高耐久性为目的,综述了国内外沉管隧道工程发展的现状。
The geological condition of the tunnel engineering is so complicated that the requirement of waterproof and anti-permeability under the different encroaching condition to the life-span of the engineering is high. The pipe section of the immersed tunnel is the large-volume concrete structure, which is complicated in the structure shape. Because of the hydration heat of the concrete, ifs difficult to control the temperature crack during the pipe production, which can weaken the cracking and permeability control, and durability of the pipe of the immersed tunnel. Based on the immersed tunnel engineering at home and abroad, and for the high durability purpose of the concrete structure, the development of the immersed tunnel engineering at home and abroad is presented in detail.
出处
《水电能源科学》
2008年第2期112-115,166,共5页
Water Resources and Power
基金
国家自然科学基金重点基金资助项目(50139030)
教育部“跨世纪优秀人才培养计划”基金资助项目(2003512643)
关键词
沉管隧道
管段
混凝土
耐久性
immersed tunnel
pipe section
concrete
durability
