花瓶墩的拉压杆模型设计方法研究

本文先对花瓶墩进行有限元实体分析,获取微观应力流传力机理,接着建立带参数的宏观拉压杆模型,进而结合最小余能原理,唯一确定拉压杆模型,最后依据内外力平衡条件计算出模型各杆件的内力,配筋验算和混凝土应力验算。这种拉压杆模型设计方法能解决花瓶墩扩头横向配筋问题。

Study on strut-and-tie model's design theory of vase pier

This paper obtains load transmission mechanism for micro-stress from the solid finite element analysis of the vase pier,and establishes the macro strut-and-tie model with parameters.To determine the unique strut-and-tie model,the minimum excess principle was derived,and furthermore,the members'internal force was determined by the equilibrium equation for force system,which was applied on checking reinforcement and concrete stress.This strut-and-tie model's design theory could be applied on the transverse re...