發(fā)布時間：2019-06-27 13:26

【摘要】：通過對之江大橋正交異性鋼橋面板進(jìn)行數(shù)值模擬,對不同U肋間距、傾角、板厚情況下隱蔽焊縫及其周圍區(qū)域的應(yīng)力分布規(guī)律和隱蔽焊縫應(yīng)力監(jiān)測的適宜區(qū)域進(jìn)行分析。結(jié)果表明:U肋翼板與隱蔽焊縫的應(yīng)力之間具有較好的相關(guān)性,橫截面的應(yīng)力比系數(shù)δB受U肋間距、U肋與翼板角度及橋面板與U肋厚度比等參數(shù)變化的影響無明顯規(guī)律;可以通過U肋翼板應(yīng)力換算得到隱蔽焊縫應(yīng)力,且δB與測點至焊縫的距離有關(guān),U肋翼板1/4高度以下區(qū)域為隱蔽焊縫應(yīng)力監(jiān)控的適宜區(qū)域。
[Abstract]:Based on the numerical simulation of orthotropic steel bridge deck of Zhijiang Bridge, the stress distribution law of hidden weld and its surrounding area under different U-ribbed spacing, inclination angle and plate thickness and the suitable area for stress monitoring of hidden weld are analyzed. The results show that there is a good correlation between the stress of U-ribbed wing plate and hidden weld. The stress ratio coefficient 未 B of cross section is not affected by the variation of U-ribbed spacing, U-ribbed and wing angle and bridge deck to U-ribbed thickness ratio. The hidden weld stress can be obtained by the stress conversion of U ribbed wing plate, and 未 B is related to the distance from the measuring point to the weld seam. The area below the height of U ribbed wing plate 1 鈮，

本文編號：2506830