多变量GM(1,n)模型在桥梁施工挠度控制中的应用  

Application of Multivariable GM(1,n) Model to Deflection Control In Bridge Construction

作　　者：张熙胤[1] 陈兴冲[1] 王常峰[1] 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《世界桥梁》2013年第5期76-80,共5页World Bridges

基　　金：国家自然科学基金项目(51108220)

摘　　要：在大跨度桥梁施工控制中,传统单变量灰色理论受误差影响较大,为提高在多因素影响下的挠度预测精度,在单变量GM(1,1)模型的基础之上,通过建立多变量灰微分矩阵方程,结合灰色预测原理,提出一种多变量GM(1,n)关联预测模型。用MATLAB编制了相应的计算程序,并将其应用于新建太中银铁路跨青银高速(75+120+75)m预应力混凝土连续梁的高程预测中,实践结果显示该模型基本准确地预测了架设过程中各梁段高程。In the construction control of long-span bridges, the conventional single variable grey theory is susceptible to errors. In order to improve the accuracy of deflection prediction under the influence of various factors, a multivariable GM （1, n） correlative prediction model was put forward by establishing the multivariable grey differential matrix equation and based on the single variable GM （1,1）model and the grey prediction theory. The corresponding calculation programs were drawn up by using MATLAB program, which were applied to the elevation prediction of the a newly built prestressed concrete continuous beam bridge crossing the Qingdao-Yinchuan Express- way on the Taiyuan-Zhongwei Railway. The results of the practical application indicated that the model basically gave accurate predictions about the elevation of each beam section in the process of the beam erection.

关 键 词：桥梁工程 施工控制 灰色理论 GM（1 n）模型 关联预测 MATLAB程序 

分 类 号：U442[建筑科学—桥梁与隧道工程]