海底隧道高抗裂自密实衬砌混凝土研究  

Study on High Crack Resistance Self-compacting Lining Concrete for Submarine Tunnel

作　　者：罗斌 华丽 谭盐宾 岳成军 周常林 LUO Bin;HUA li;TAN Yanbin;YUE Chengjun;ZHOU Changlin(Experimenting and Testing Co.,Ltd.;Guangzhou Xiebao Building Materials Co.,Ltd.;Institute of Railway Construction,China Academy of Railway Sciences)

机构地区：[1]中铁隧道局集团有限公司工程测量试验分公司 [2]广州协堡建材有限公司 [3]中国铁道科学研究院集团有限公司铁道建筑研究所

出　　处：《广东建材》2024年第12期22-26,共5页Guangdong Building Materials

摘　　要：在隧道衬砌拱顶混凝土施工中采用微膨胀自密实混凝土技术代替传统的衬砌大坍落度混凝土及辅助注浆工艺,解决了拱顶混凝土脱空、不密实等困扰工程已久的问题。该技术取消了传统施工中的辅助注浆工艺,通过采用高流动性、高填充性和高稳定性的自密实混凝土一次性完成拱顶二衬混凝土浇筑施工,为其他类似工程提供了可借鉴的经验。In the construction of tunnel lining vault concrete,micro-expansion self-compacting concrete technology is used to replace the traditional lining large slump concrete and auxiliary grouting process,to solve the long-standing problems of vault concrete degassing and non-compactness.This technology eliminates the auxiliary grouting process in traditional construction and completes the pouring of the vault secondary lining concrete in one go by using self-compacting concrete with high fluidity,high filling and high stability,providing experience for reference for other similar projects.

关 键 词：海底隧道 高抗裂 自密实混凝土 

分 类 号：U459.5[建筑科学—桥梁与隧道工程] U455.91[交通运输工程—道路与铁道工程]