Research on Temperature Control Technology of Anchoring Mass Concrete of Cangrong Xunjiang Bridge
Based on anchorage foundation project of Cangrong Xunjiang Bridge,temperature control technology of mass concrete is studied.By establishing a numerical model,the temperature and stress distribution inside and outside the concrete layer are analyzed.Based on the temperature control calculation,the temperature control standards and corresponding temperature control measures are formulated for anchor block concrete,and the effectiveness of temperature control measures is verified by field measurement results.The analysis results show that the layering construction of mass concrete can effectively control the temperature of concrete,and the layering thickness has an important influence on the early anti-cracking safety factor of concrete in each pouring layer of anchor block.Construction measures such as concrete quality control,mold temperature control,cooling pipe cooling,maintenance,insulation and moisture preservation are adopted.All the indexes in the process of anchoring mass concrete placement are within the control standard range,and good results have been achieved.The temperature control of mass concrete is realized.
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