[1]景天虎1,2,李 桅1,等.悬索桥主缆线形确定的常用精确解析算法比较及电算高效实现方法研究[J].西安建筑科技大学学报:自然版,2011,43(06):821-830.[doi:DOI:10.15986/j.1006-7930.2011.06.010]
 ,,et al.Comparison on common precise numerical analytical algorithmsto determine main cables’curve shape in suspension bridges andstudy on highly effective methods of computati[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2011,43(06):821-830.[doi:DOI:10.15986/j.1006-7930.2011.06.010]
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悬索桥主缆线形确定的常用精确解析算法比较及电算高效实现方法研究()
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西安建筑科技大学学报:自然版[ISSN:1006-7930/CN:61-1295/TU]

卷:
43
期数:
2011年06期
页码:
821-830
栏目:
出版日期:
2011-12-31

文章信息/Info

Title:
Comparison on common precise numerical analytical algorithms
to determine main cables’curve shape in suspension bridges and
study on highly effective methods of computati
文章编号:
1006-7930(2011)06-0821-10
作者:
景天虎1李 桅1李青宁1张品乐1
(1.西安建筑科技大学土木工程学院,陕西西安710055;2.桂林理工大学土木与建筑学院,广西桂林541004;
3.西部建筑科技国家重点实验室(筹),陕西西安710055)
Author(s):
JING Tian-hu1LI Wei1LI Qing-ning1ZHANG Pin-le1
(1.School of Civil Engineering,Xi'an Univ.of Arch.& Tech.,Xi′an 710055,China;
2.School of Civil and Architecture Engineering,Guilin University of Technology,Guilin 541004,China;
3.State Key Laboratory of Architecture Science and Technology in West China(XAUAT),Xi'an 710055,China)
关键词:
桥梁工程悬索桥数值解析算法主缆线形确定MATLAB
Keywords:
bridge engineeringsuspension bridge curve shape of main cables to determineMATLAB .
分类号:
U448.25
DOI:
DOI:10.15986/j.1006-7930.2011.06.010
文献标志码:
A
摘要:
 以悬索桥主缆线形确定的常用精确数值解析算法为研究对象,通过对它们的比较分析和公式推导发
现:在主缆理想柔性、忽略泊松比效应的最基本假定下,主缆线形确定的精确数值解析法可归结为主缆自重
集度按其有、无应力长度计算作为已知条件的两大类算法;并且证明了在每大类解析算法中的所有方法是完
全等价的.研究还表明:第二类解析算法为“全精确解析算法”,第一类为“准精确解析算法”;在第一类算法中,
主缆无应力长度公式的计算值偏小.仅就悬索桥主缆成桥态线形确定而言,主缆线形确定的两大类数值解析
算法都具有很高的工程精度,但第二类算法的主缆自重集度的确定更为精确、更接近实际情况,实际计算时
应优先使用它.另外,针对两类解析算法涉及到大量的超越方程求解和递推迭代计算的情况,提出了基于
MATLAB软件的高精度电算实现方法.最后,给出一个超大跨径悬索桥的中跨主缆线形确定的验证算例.
Abstract:
The common precise numerical analytical algorithms to determine main cables’curve shape in suspension bridges
were investigated.By means of comparison among these algorithms and formulae inference,it is found that these algorithms
 can be reduced to two big categories of analytical ones according to different known conditions that weight intensity
loads of main cables are calculated in terms of their lengths with stress and without stress under the basic hypotheses that
main cables are ideally flexible and the effect of Poisson ratio of their cross-sections is neglected.It is proved that all
methods among big categories of analytical ones are equivalent to each other.Moreover,further studies show that the second
 big category of analytical algorithms is“thoroughly precise analytical ones”and the first is quasi-precise analytical
ones,and the latter one under-evaluates the length of main cables.Both categories of analytical algorithms to determine
main cables’curve shape have very high precision of engineering as far as the determination of curve shape finished state
of suspension bridges is concerned,but the method to determine weight intensity loads of main cables in the 2nd categories
of analytical ones are more precise and nearer to actual cases,so the 2nd one is preferred choice in actual computations of
suspension bridges.In addition,highly effective methods of computers are presented to solve a lot of transcendental equations
 and recurrence operations involved in by the two big categories of analytical algorithms.Finally,an example to determine
 main cables’curve shape of the middle span in a super-long span suspension bridge is given to validate the analysis
in this paper.

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备注/Memo

备注/Memo:
*收稿日期:2010-10-15  修改稿日期:2011-10-15
基金项目:国家自然科学基金资助项目(51078306);教育部高等学校博士学科点专项科研基金资助项目(20106120110004);西安建
筑科技大学重大科技项目创新基金资助项目(ZX0901)
作者简介:景天虎(1972-),男,陕西富平县人,博士,讲师,主要从事大跨度桥梁的结构分析理论研究
更新日期/Last Update: 2015-11-06