摘要
为解决港珠澳大桥CB03标预制桥墩产生裂缝问题,采用有限元仿真模拟分析墩身内部温度和应变状况,在墩身内部埋设温度和应变传感器进行温度和应变原位测试。确定产生裂缝的根本原因是桥墩施工缝上下层混凝土收缩不同步,在此基础上制定了相应的防裂技术措施,较好地解决了裂缝问题。
In order to solve the prefabricated pier crack problems of Hongkong-Zhuhai-Macao Bridge CB03 tenders, we analyzed the internal temperature and strain condition of the bridge pier with the finite element simulation, and buried the internal temperature and strain sensors in the pier to do the in situ test of temperature and strain. We concluded that the root cause of cracks in the production of construction joints piers on the lower shrinkage of concrete are not synchronized, and developed a corresponding crack technical measures, which can well solve the crack problems.
出处
《中国港湾建设》
2015年第12期66-70,共5页
China Harbour Engineering
关键词
港珠澳大桥
预制
桥墩
裂缝
收缩
Hongkong-Zhuhai-Macao Bridge
prefabricated
pier
crack
shrinkage
