（福建省建筑设计研究院，福州 350001）

［摘要］为研究预应力管桩柱下单桩基础对框架结构抗震性能的影响，根据结构的实际构造做法，建立了精确的分析模型。Pushover分析结果表明，地梁未经加强的单桩基础框架在强震作用下的延性较常规框架结构显著下降。结构将最终因地梁层承载能力的过早耗尽而失效。将地梁层作为主要耗能构件进行加强是单桩框架抗震设计的关键所在。

［关键词］预应力管桩柱下单桩基础；Pushover分析；地梁层

Seismic design of the frame based on the single PHC pile

Ren Yu (Fujian Architecture Design & Research Institution, Fuzhou 350001, China)

Abstract:In order to study the seismic performance of the RC frame based on the single PHC pile, the accurate analysis model is established according to the actual mode of construction. The results of Pushover analysis show that the ductility of the frame based on the single PHC pile declines obviously. The structural collapse is caused by the exhaustion of the bearing capacity of the base-beams. The strengthening of base-beams, which are considered as main members to dissipate earthquake energy, are found to be key factors affecting the seismic design of the frame based on the single PHC pile.

Keywords:single PHC pile; Pushover analysis; base-beam

作者简介：任彧，高级工程师，一级注册结构工程师，注册咨询工程师，Email:fzrenyu@21cn.com。

参考文献

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