中国港湾建设
中國港灣建設
중국항만건설
CHINA HARBOUR ENGINEERING
2013年
4期
38-41
,共4页
大体积混凝土%入模温度%混凝土裂缝%控制
大體積混凝土%入模溫度%混凝土裂縫%控製
대체적혼응토%입모온도%혼응토렬봉%공제
mass concrete%temperature before casting%cracking%control
大体积混凝土温度控制是大体积混凝土施工中重要的研究和控制项目，其入模温度又是控制的关键环节。文中主要根据港珠澳大桥沉管预制混凝土温度控制研究，阐述了温控总体思路和具体温控措施。结果表明，通过有效控制混凝土入模温度，达到降低构件内表温差、构件与环境温差等作用，进而减小开裂风险。
大體積混凝土溫度控製是大體積混凝土施工中重要的研究和控製項目，其入模溫度又是控製的關鍵環節。文中主要根據港珠澳大橋沉管預製混凝土溫度控製研究，闡述瞭溫控總體思路和具體溫控措施。結果錶明，通過有效控製混凝土入模溫度，達到降低構件內錶溫差、構件與環境溫差等作用，進而減小開裂風險。
대체적혼응토온도공제시대체적혼응토시공중중요적연구화공제항목，기입모온도우시공제적관건배절。문중주요근거항주오대교침관예제혼응토온도공제연구，천술료온공총체사로화구체온공조시。결과표명，통과유효공제혼응토입모온도，체도강저구건내표온차、구건여배경온차등작용，진이감소개렬풍험。
Temperature control of mass concrete is the most important research and control program in mass concrete con-struction, and the control of temperature before casting is the key of the programme. Based on the research of the temperature control for precasting of concrete immersed channel sections for HZMB project, the paper presents the general concept and detailed measures for temperature control. The research results show that the risk of cracking in concrete can be reduced by ef-fective control of concrete temperature before casting to lower the temperature disparity between the inside and outside of a concrete element and the temperature disparity between a structure and the environment.
