刘军生，韩  立，刘  义，刘  伟
（陕西省建筑科学研究院，西安710062）

[摘要] 对郑西客运专线西安北站预应力混凝土梁施工过程进行了实时监测。通过对试验数据的分析，得到了预应力筋和孔道壁之问的摩擦系数，预应力钢丝的内缩值，梁的挠度以及梁中截面的应力分布状态等结果，在此基础上给出了设计建议。
[关键词] 郑西高铁；监测；无粘结预应力

    Monitoring analysis on prestressed concrete beam of Xi'an north railway station
    Liu Junsheng, Han Li, Liu Yi, Liu Wei
    (Shaanxi Provincial Academy of Building Research, Xi'an 710062, China)

Abstract: The prestressed concrete beam construction process ofXi'an north station was monitored, and the test data was also measured. Through analysis of the experimental data, the coefficient of friction was obtained between the pore wall and the tendons. The reducing value of the inner prestressed steel wire was also obtained. Beam deflection and the stress distribution ofbeam cross section were gained. Some suggestions for such projects are also presented.
Keywords: high speed railway from Zhengzhou to Xi'an; monitoring; unbonded prestress