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后张法预应力管道注浆欠密实、有效预应力损失是目前公路桥梁建设十分迫切需要解决的技术难题。在张承高速公路张家口段二期工程建设中,开展预应力梁板孔道注浆密实度检测将有效减少桥梁建设中后张法预应力体系病害的发生,对未来高速公路建设标准化施工中,确保预应力混凝土桥梁良好的工作状态和正常的使用功能提供十分重要的工程意义。
Post-tensioned prestressed pipe grouting is less dense, effective loss of prestressing is a technical problem that is urgently needed to be solved in highway bridge construction. During the construction of the second phase of Zhangjiakou Section of Zhangcheng Expressway, the testing of pre-stressed girder tunnel grouting density will effectively reduce the occurrence of post-tensioning prestressed system diseases in bridge construction. In the future standardization construction of expressway construction, Prestressed concrete bridges good working conditions and the normal use of functions provide very important engineering significance.