大型托换钢桁架钢管混凝土柱节点力学性能研究  

STUDY ON MECHANICAL PROPERTIES OF LARGE STEEL UNDERPINNING TRUSS-STCC JOINT

作　　者：赵雅娜[1] 余志祥[1] 赵世春[1] 

机构地区：[1]西南交通大学土木工程学院,成都610031

出　　处：《工业建筑》2011年第10期90-94,共5页Industrial Construction

基　　金：中央高校科研基金资助项目(2010-2012)

摘　　要：为了研究新建呼和浩特火车东站大跨度屋盖结构钢桁架-钢管混凝土柱关键连接节点受荷安全性,基于混合尺度分析方法,构建了数值模型,研究其破坏模式与滞回特征。探讨Drucker-Prager Cap材料模型进行混凝土滞回分析的可行性,并据此进行钢-混凝土组合对比模型构建,分析内填混凝土与否及内填混凝土强度等级高低对节点力学性能的影响,并结合复杂节点的工艺力学特点,研究节点内加强与局部加厚加强两种方式的力学性能差异。This paper studies on the failure mode and the hysteretie characteristics of the key steel underpinni^g /russ-STCC joint,which lies in the large-span roof of Hohhot East Railway Station, by constructing a mixed-scales finite element model. It is explored the feasibility of using Drucker-Prager Cap material model in concrete hysteretic analysis. And it is constructed the joint model based on it to discuss the mechanical property differences of the join! model with and without filled concrete and the impact of the grade of tile concrete. Also it is studied the mechanical differences between adopting internal stiffened method and local strength method combined procedures mechanical property of complicated ioint in order to present some advices tbr structure design.

关 键 词：新型高速铁路大型客运站房 节点 加强构造措施 混合尺度 Drucker-PragerCap材料模型 

分 类 号：TU398.9[建筑科学—结构工程]