灰色系统理论在连续梁桥施工应力监控中的应用研究  

Application of Grey System Method in Stress Monitoring and Control of Continuous Girder Bridge Construction

作　　者：段宝福[1] 翟成波[1] 翁现合[1] 

机构地区：[1]山东科技大学 山东省土木工程防灾减灾重点实验室,青岛266590

出　　处：《特种结构》2012年第2期67-71,共5页Special Structures

摘　　要：在悬臂施工的连续梁桥施工监控环节中,传统的监控方法不能简单且有效地对桥梁应力发展趋势作出准确预测。本文依据同一座连续梁桥施工中控制截面的应力序列,同时建立两种灰色预测模型,比较这两种模型在连续梁桥施工应力控制中的应用。同时,以宁杭客专南河大桥施工为背景,对该桥控制截面的实测应力序列同时建立新陈代谢GM(1,1)模型和SCGM(1,1)滚动模型,预测在各施工段预应力张拉结束之后控制截面的应力值,施工控制结果表明:两种模型的预测精度均达到工程施工要求的水平,且两种模型的适应性较高,从而验证了这两种模型在连续梁桥悬臂浇筑施工应力控制中的可行性和适应性。During the monitoring and control of continuous girder bridge construction, the traditional method can＇t effectively predict the trend of stress in the bridge. What＇s more, the application is very complex. In this paper, two kinds of grey prediction model were built based on the stress sequence of control section in the same continuous beam bridge construction, then the application of these two models was compared. Information renewal GM （ 1,1 ） mod- el and SCGM （1,1） dynamic model were bused on stress test results from control sections in the Nanhe Bridge con- struetion in Jiangsu province for stress prediction. The results showed that the prediction requires, and the feasibility and adaptability of these two models in stress prediction of the continuous girder bridge construction were validated.

关 键 词：应力监控 连续梁桥 SCGM(1 1)模型 新陈代谢模型 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]