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1) steel box girder stress
钢箱梁应力
2) prestressed steel box girder bridge
预应力钢箱梁桥
3) prestressed steel box girder
预应力钢箱梁
1.
The paper mainly analyses the prestressed steel box girder.
本文主要对预应力钢箱梁进行了振动理论分析。
4) Simply supported steel box girder with prestressed tendons
预应力简支钢箱梁
1.
Based on the experimental result of model experiment of simply supported steel box girder with prestressed tendons,models of simply supported steel box girder and simply supported steel box girder with prestressed tendons were established by using finite element analysis software ANSYS and mode analysis was carried on to them.
以预应力简支钢箱梁模型试验的测试结果为基础,应用有限元分析软件ANSYS建立普通简支钢箱梁和预应力简支钢箱梁模型并对其进行模态分析,将有限元计算结果和模型试验测试结果进行对比,从而验证预应力简支钢箱梁有限元模型的正确性。
2.
Based on the result of model experiment of a simply supported steel box girder with prestressed tendons,finite element models of a simply supported steel box girder and a simply supported steel box girder with prestressed tendons were established with ANSYS finite element analysis software.
以预应力简支钢箱梁模型试验的测试结果为基础,应用有限元分析软件ANSYS建立了普通简支钢箱梁和预应力简支钢箱梁有限元分析模型,分析结果得到模型试验的良好验证,并用该模型分析了预加力对简支钢箱梁的固有频率的影响以及钢索索力大小、钢索截面面积和钢箱梁钢板厚度对预应力简支钢箱梁固有频率的影响。
3.
This paper presents the influence of the magnitude of prestress force,eccentricity of anchor on natural frequency of simply supported steel box girder with prestressed tendons.
建立了预应力钢箱梁振动性能的非线性分析模型,并推导了曲线型布索的预应力简支钢箱梁自振频率计算公式;以曲线型布索的预应力简支钢箱梁试验模型为基础,应用有限元分析软件ANSYS建立了预应力简支钢箱梁模型并对其进行模态分析,通过模型试验的自振频率测试结果和有限元分析结果验证了理论公式推导的正确性;采用理论计算和有限元数值计算相结合的方法研究了预应力钢索索力、锚固位置对预应力简支钢箱梁自振频率的影响。
5) pre-stressed box girder
预应力箱梁
1.
Analysis of quality problems in pre-stressed box girder construction and their prevention;
预应力箱梁施工质量问题分析及预防
6) prestressed box girder
预应力箱梁
1.
Prefabrication and hoisting of 30m prestressed box girder;
30 m预应力箱梁的预制与吊装
2.
The analysis of the prestressed box girder construction scheme of Xiuyanhe Bridge;
秀延河大桥预应力箱梁施工方案浅析
3.
The finite-element analysis and reinforcement of 28m span prestressed box girder are introduced.
以上海明珠线中潭路车站结构设计为例 ,分析比较了高架轻轨车站在荷载取值、工况、内力组合、结构计算等方面不同于一般民用建筑的特殊性 ,探讨了温度变化、支座沉降产生的内力对结构配筋的影响 ,介绍了 2 8m跨度预应力箱梁的有限元计算及配筋 ,为以后此类结构的设计提供了参考。
补充资料：ANSYS工字梁焊缝初应力例子
建立好模型
…..
/SOLU
!*
ANTYPE,0
/INPUT,'input','txt',
/INPUT,'output1','txt',
!*
ISFILE,READ,1,txt, ,0
SOLVE
=====================
!定义残余应力矩阵
I=1
fy=310e6
!定义单元中心坐标数组，初应力数组
*DIM,EleCenter,ARRAY,NumNode,3,1, , ,
*DIM,EleIS,ARRAY,NumNode,1,1, , ,
*DO,I, 1, NumNode,1
!得到单元中心坐标
*GET,EleCenter(I,1,1),ELEM,I,CENT,X
*GET,EleCenter(I,2,1),ELEM,I,CENT,Y
*GET,EleCenter(I,3,1),ELEM,I,CENT,Z
!焊缝位置在X=1.0 到1.05 之间
*IF,EleCenter(I,1,1),GT,1,THEN
*IF,EleCenter(I,1,1),LT,1.05,THEN
*IF,EleCenter(I,2,1),GT,0.5,THEN
!上翼缘初始应力
EleIS(I,1,1)=-20*fy*EleCenter(I,3,1)**2+0.3*fy
*endif
*IF,EleCenter(I,2,1),LT,0.0,THEN
!下翼缘初始应力
EleIS(I,1,1)=-20*fy*EleCenter(I,3,1)**2+0.3*fy
*endif
!腹板初始应力
*if,EleCenter(I,2,1),GE,0.0,THEN
*IF,ELECENTER(I,2,1),LE,0.5,THEN
EleIS(I,1,1)=4.076*fy*(EleCenter(I,2,1)-0.5)**2
EleIS(I,1,1)=EleIS(I,1,1)-0.719*fy
*IF,EleIS(I,1,1),LT,-0.3*fy,THEN
ELeIS(I,1,1)=-0.3*fy
*ENDIF *ENDIF
*ENDIF
*ENDIF
*ENDIF
*ENDDO
===============
!输出应力数值
*CFOPEN,'1','txt',' '
*DO,I,1,3840
!*IF,EleIS(I,1,1),ne,0.,then
*VWRITE,'!'
(A)
*VWRITE,'! Stress for element',
(A,F)
*VWRITE,'!'
(A)
*VWRITE,'eis,',I
(A,F)
P=EleIS(I,1,1)
*VWRITE,P,0.,0.,0.,0.,0.
(E,E,E,E,E,E)
!*ENDIF
*ENDDO
*CFCLOS
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条
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