论文部分内容阅读
钢筋混凝土沉管隧道管段制作过程中水泥的水化热是主要的升温因素,先浇注的底板对侧墙变形形成约束,致使管段侧墙容易产生裂缝,通常在外侧墙内布置冷却管以控制温度裂缝。以上海外环线越江隧道为工程背景,采用有限元法对管段的温度场进行数值模拟,分析了在冷却作用下管段温度场的分布与变化规律,为管段温度裂缝控制的设计与施工提供依据。
Reinforced concrete immersed pipes during the production of pipe hydration heat of cement is the main heating factor, the first pouring of the floor deformation of the formation of constraints on the side walls, resulting in easy to produce cracks on the side wall, the cooling pipe is usually arranged in the outer wall to control the temperature crack. Taking Shanghai Outer Ring Road cross-river tunnel as engineering background, the finite element method was used to simulate the temperature field in pipe section. The distribution and variation of temperature field in pipe section under cooling were analyzed, providing the basis for the design and construction of temperature crack control in pipe section.