现役建筑结构经过一段时间的使用，其抗力和荷载效应都与设计时的不同。
Being used for many years, the existing structure differs from original design in performance and load-appearance.
但是当前对现役建筑结构可靠性鉴定的理论方法还尚不成熟，有待于进一步研究，使对现役建筑结构可靠性鉴定的研究逐步形成完整的科学鉴定体系。
But the current theories of the reliability of evaluating the existing structures have not been mature yet, they still need to be studied further and form a scientific integrated evaluating system.
但是当前对现役建筑结构可靠性鉴定的理论方法还尚不成熟，有待于进一步研究，使对现役建筑结构可靠性鉴定的研究逐步形成完整的科学鉴定体系。
But the current theories of the reliability of evaluating the existing structures have not been mature yet, they still need to be studied further and form a scientific integrated evaluating system.
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