铁路大体积混凝土裂缝控制施工计算及仿真建模分析  

Analysis on Construction Calculation and Simulation Modeling of Mass Concrete Crack Control in Railway

作　　者：徐双双 XU Shuangshuang(China Railway 14th Bureau Group Tiezheng Testing Technology Co.,Ltd.,Jinan 250000,Shandong,China)

机构地区：[1]中铁十四局集团铁正检测科技有限公司,山东济南250000

出　　处：《工程技术研究》2024年第5期19-21,共3页Engineering and Technological Research

摘　　要：大体积混凝土结构中的裂缝可能对结构的安全性产生负面影响。通过控制混凝土的裂缝,可以减轻裂缝引起的结构问题,确保铁路工程结构的稳定性和耐久性。裂缝会影响混凝土的耐久性,特别是在面对恶劣气候和环境条件时,通过采取裂缝控制措施,可以延长铁路工程的使用寿命,降低维护和修复成本。文章基于混凝土配合比、混凝土水化热绝热温升、温度收缩应力及抗裂安全度方面,详细说明了大体积混凝土裂缝控制施工计算方式,并通过建立混凝土水化热仿真模型,对比理论最高温度与实际最高温度,旨在为实际施工活动提供技术参考。Cracks in mass concrete structures may have a negative influence on the safety of the structure.By controlling the cracks in concrete,the structural problems caused by cracks can be alleviated to ensure the stability and durability of railway engineering structures.Cracks can affect the durability of concrete,especially in the face of harsh climate and environmental conditions.By taking crack control measures,the service life of railway engineering can be prolonged and the maintenance and repair costs can be reduced.Based on aspects of concrete mixture proportion,adiabatic temperature rise of concrete hydration heat,temperature shrinkage stress and crack resistance safety,this paper describes in detail the construction calculation method of mass concrete crack control,and compares the theoretical maximum temperature with the actual maximum temperature by establishing the simulation model of concrete hydration heat,aiming to provide technical reference for actual construction activities.

关 键 词：大体积混凝土 裂缝 水化热绝热温升 

分 类 号：TU37[建筑科学—结构工程]