大跨中承式鋼管混凝土拱橋橋道系合理位置分析4P.pdf

大跨中承式鋼管混凝土拱橋橋道系合理位置分析

從功能和構(gòu)造要求及美學(xué)的角度系統(tǒng)地論述大跨中承式鋼管混凝土拱橋的橋道系相對(duì)位置的設(shè)置方法, 探討橋
道系相對(duì)位置對(duì)橋梁結(jié)構(gòu)的穩(wěn)定與振動(dòng)的影響, 并對(duì)部分大跨中承式鋼管混凝土拱橋的橋道系相對(duì)位置進(jìn)行統(tǒng)計(jì)分
析。
研究表明: 將衡量橋道系相對(duì)位置的參數(shù)c (橋道系距拱頂?shù)母叨扰c矢高的比值) 設(shè)在016 左右為合理位置, 可
使橋梁結(jié)構(gòu)具有較好的橫向穩(wěn)定性和動(dòng)力性能, 并具有較強(qiáng)的美感。

From the view of function , construction demand and aesthetic effect , the method to design the bridge decksystem’s position
was systematically discussed for the longOspan halfOthrough concrete filled steel tubular arch bridge1The influence on the structural stabili2
ty and vibration caused by various bridge deck system’s positions were analyzed1The data of the bridge deck system’s positions of some
longOspan halfOthrough CFST arch bridges were collected and analyze by statistics method1It indicates that the best position of a bridge
deck system can be confirmed when c , the parameter of a bridge deck system’s position (ratio of the distance between deck and crown
to rise) , approximates 0161If so , the bridge construction will possess better lateral stability and dynamic performance , with more pleas2
ant impression1