建筑工程技术与设计
建築工程技術與設計
건축공정기술여설계
Architectural Engineering Technology and Besign
2014年
10期
384-385
,共2页
桥梁挠度变形预测%大跨度预应力混凝土箱梁桥%灰色模型%多项式分布滞后模型
橋樑撓度變形預測%大跨度預應力混凝土箱樑橋%灰色模型%多項式分佈滯後模型
교량뇨도변형예측%대과도예응력혼응토상량교%회색모형%다항식분포체후모형
Bridge deflection deformation prediction%Large span prestressed concrete box girder bridge%Polynomial distributed lag model
为了确保大跨度预应力混凝土箱梁桥的结构安全状态,对其进行挠度监测至关重要。介绍了灰色GM(1,1)模型以及顾及温度因子的多项式分布滞后模型,并将两者应用于桥梁挠度预测,从线性和非线性两个角度对桥梁挠度进行预测分析,得到了其内在的挠度变化规律及变形趋势,其预测结果更为可靠,为桥梁运营管理部门提供了一定的决策依据。
為瞭確保大跨度預應力混凝土箱樑橋的結構安全狀態,對其進行撓度鑑測至關重要。介紹瞭灰色GM(1,1)模型以及顧及溫度因子的多項式分佈滯後模型,併將兩者應用于橋樑撓度預測,從線性和非線性兩箇角度對橋樑撓度進行預測分析,得到瞭其內在的撓度變化規律及變形趨勢,其預測結果更為可靠,為橋樑運營管理部門提供瞭一定的決策依據。
위료학보대과도예응력혼응토상량교적결구안전상태,대기진행뇨도감측지관중요。개소료회색GM(1,1)모형이급고급온도인자적다항식분포체후모형,병장량자응용우교량뇨도예측,종선성화비선성량개각도대교량뇨도진행예측분석,득도료기내재적뇨도변화규률급변형추세,기예측결과경위가고,위교량운영관리부문제공료일정적결책의거。
In order to ensure the structural safety of the state of large-span prestressed concrete box girder bridge, its deflection monitoring is essential. Introduces the grey GM(1,1) model and a Polynomial distributed lag model which considering temperature factor’s effect, and use them in bridge deflection prediction. From linear and nonlinear aspects to predict the deflection of bridge and find out its intrinsic deflection change rule and the trend of deformation. The prediction result is more reliable and it can provide bridge operations management some basis for making decision.