摘要
文中对某大桥主桥索塔承台大体积混凝土温度控制进行了研究。首先通过制定温控实施流程,然后合理选择抗裂安全系数,合理布置冷却水管等措施,最后通过软件对温度应力进行了仿真计算。结果发现:大桥承台混凝土浇筑后,温度上升小于50℃,内部温度与表面温度相差在25℃以内,承台混凝土的各龄期最小抗裂安全系数符合安全系数设计要求,实现了有效控制大体积混凝土水化热、提高混凝土浇筑质量的目的。
The temperature control of the mass concrete of the main bridge of a certain bridge was studied.Firstly,the temperature control implementation process was formulated,and then the anti-cracking safety factor was selected rationally,the cooling water pipes and other measures were also chosen.Finally,the temperature stress was simulated by the software.The results were found.After platform pouring of concrete of the bridge,the temperature increase was less than 50℃,the difference between the internal temperature and the surface temperature was less than 25℃,and the minimum crack resistance safety factor was 1.84.The heat of hydration of the mass concrete was effectively controlled,and the quality of concrete pouring was improved successfully.
作者
杨朋
李建新
鲍树峰
刘科强
王海峰
李星
Yang Peng;Li Jianxin;Bao Shufeng;Liu Keqiang;Wang Haifeng;Li Xing(School of Civil Engineering and Management,Guangzhou Maritime University,Guangzhou,Guangdong 510725;Foshan Jianying Development Co.Ltd.,Foshan,Guangdong 528000)
出处
《江西建材》
2021年第12期252-253,256,共3页
Jiangxi Building Materials
基金
广东省高等教育教学改革项目“互联网+下以建筑材料为基础的港口航道与海岸工程应用型人才培养体系研究”(粤教高函[2020]20号)
佛山市禅西大道南延线工程(樵乐路-佛山一环段)路面施工质量监控服务(FS-CN-H-[2021]003)
番海大桥工程路面施工质量监控服务(FS-KQII-H-[2020]008)
关键词
承台浇筑
大体积混凝土
水化热
温度控制
Platform pouring
Mass concrete
Heat of hydration
Temperature control
