（1 西安建筑科技大学土木工程学院，西安 710055； 2 陕西省文化遗产研究院，西安 710075）

［摘要］彬县大佛寺现为世界文化遗产，明镜台作为大佛寺的重要组成部分，由于其台基沉降变形较为严重，已经威胁到上部文物的安全。针对明镜台台基稳定问题提出合理的治理措施；根据弹性桩设计原理，计算明镜台锚索抗滑桩桩身内力，为锚索抗滑桩的设计提供依据；利用ANSYS有限元分析软件建立三维有限元模型，得出未采取加固措施时安全系数取1-25情况下明镜台的位移和塑性变形，对抗滑桩和锚索抗滑桩的加固效果进行对比分析，得出锚索抗滑桩较抗滑桩能更有效地控制水平位移，且使被加固体的应力和应变分布更加均匀；将桩身内力的理论计算值与数值计算值进行对比，两者的变化趋势基本一致，验证了理论计算的合理性。

［关键词］明镜台； 加固； 抗滑桩； 锚索； 数值分析

中图分类号：TU457文献标识码：A文章编号：1002-848X(2018)04-0090-06

Study on reinforcement and protection of anti-slide pile for Ming-Jing Tai in Great Buddha Temple at Bin County

Wang Yulan1, Zhao Dong1, Lei Fan2, Zhang Weixi1

(1 Department of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an 710055， China;2 Shaanxi Provincial Institute of Cultural Heritage， Xi’an 710075， China)

Abstract:Ming-Jing Tai is a key component of The Great Buddha Temple (Da-Fo Si) which is a world cultural heritage site located at Bin County. The settlement deformation of the platform of Ming-Jing Tai is already serious to threaten the safety of the upper cultural relics. Reasonable treatment measures were put forward about the stability of Ming-Jing Tai platform. According to the elastic pile design principle, the internal force of the cable-anchored anti-slide pile of Ming-Jing Tai was calculated, which provided the basis for the design of cable-anchored anti-slide pile. Three-dimensional finite element model was established using finite element analysis software ANSYS to obtain the displacement and plastic deformation of Ming-Jing Tai, in the case of safety coefficient of 1-25 and no reinforcement measures. The reinforcement effect of anti-slide pile and cable-anchored anti-slide pile were analyzed and compared to conclude that cable-anchored anti-slide pile can more effectively control the horizontal displacement to make the stress and strain distribution of reinforced structure more uniform. Comparison and analysis were made about the theoretical results and the numerical results of the internal forces of pile body to show and concluded that the changing trends of the two were basically the same and the rationality of theoretical calculation was verified.

Keywords:Ming-Jing Tai; reinforcement; anti-slide pile; cable-anchored; numerical analysis

*陕西省教育厅资助项目（16JK1430），西安建筑科技大学青年基金资助项目（QN1531）。

作者简介：王玉兰，博士研究生，讲师，Email：yulan1984333@163.com。