某超长隧道的水化热效应数值分析  

Numerical Analysis of Hydration Heat Effect in the Ultra-long Tunnel

作　　者：欧旻韬[1] 焦柯[1] 

机构地区：[1]广东省建筑设计研究院,广州510010

出　　处：《广东土木与建筑》2013年第10期43-46,共4页Guangdong Architecture Civil Engineering

摘　　要：针对某超长隧道的结构底板、侧壁及顶板在施工过程中的水化热效应进行了数值分析,根据三维瞬态温度场理论,采用有限元软件Mdias Gen建模和水化热效应计算,分别获得混凝土配比、底板约束条件、设置后浇带这3个因素对应力场的影响规律及影响程度,并分别给出混凝土开裂风险较高的部位,供设计和施工参考。Hydration heat effect induced by construction of floor,side wall and roof are numerically analysed about the ultra-long tunnel. Based on the theory of three-dimensional transient temperature field,models are founded with finite element software Midas Gen to simulate the hydration heat effect. The influences of laws and degrees about concrete proportioning,bottom's constraint condition and installed with post-poured strips are analyzed,and the easy crack position was pointed out. The result provides reference to design and construction.

关 键 词：水化热效应 超长隧道 数值分析 三维有限元法 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]