波形鋼腹板PC組合箱梁抗扭性能試驗*
王圣保
- 摘 要
-
王圣保（哈爾濱理工大學建筑工程學院，哈爾濱150080）［摘要］通過試驗的方法，研究波形鋼腹板PC組合箱梁在偏心荷載作用下，撓度、橫向位移、剛性扭轉(zhuǎn)角、箱梁截面的翹曲應變、翹曲應力及波形鋼腹板的附加剪應力的分布規(guī)律，以了解懸臂波形鋼腹板PC組合箱梁在扭轉(zhuǎn)作用下的力學性能。研究表明：波形鋼腹板翹曲應變很小，可忽略不計；翹曲應力在底板上呈現(xiàn)明顯的直線分布規(guī)律，且最大值出現(xiàn)在底板的角點處；波形鋼腹板上的剪應力分布較均勻，附加剪應力在腹板上的分布也有類似的規(guī)律。［關(guān)鍵詞］波形鋼腹板；扭轉(zhuǎn)；翹曲應力；畸變；橫向位移；翹曲應變；偏心加載中圖分類號：TU391文獻標識碼：A文章編號：1002-848X(2012)09-0121-05Experiment on torsion behaviors of pre-stressed concrete composite box girders with corrugated steel websWang Shengbao(College of Civil Engineering and Architecture, Harbin University of Science and Technology, Harbin 150080, China)Abstract: In order to investigate mechanical properties of pre-stressed concrete composite box girders with corrugated steel webs under torsional loading, distribution of deflection,lateral displacement, rigid torsion angle, warp strain, warp stress, additional shear stress under eccentric loading were researched through the experiment. The research indicates that the warp strain of corrugated steel web is small. Warp stress of the pre-stressed concrete composite box girder is uniformly distributed on the bottom plate, and the maximum value is in the corner of the concrete bottom plate. Shear stress is uniformly distributed along the corrugated steel web, and the additional shear stress along the corrugated steel web has the similar distribution.Keywords: corrugated steel web; torsion; warp stress; distortion; lateral displacement; warp strain; eccentric loading*國家自然科學基金資助項目（50808058）。作者簡介：王圣保，講師，Email：wangshengbao1974@126.com。參考文獻［1］MO Y L，JENG CHYUANHWAN，CHANG Y S.Torsional behavior of prestressed conerete box-girder bridges with corrugated steel wbs［J］. Structural Journal，2000，97(6)：849-859.［2］萬水,湯意,王勁松.波形鋼腹板PC組合箱梁結(jié)構(gòu)特點分析與試驗研究［J］.南京理工大學學報,2004,28(5):498-501.［3］李宏江，葉見曙，萬水，等.波形鋼腹板箱梁偏載下的力學性能［J］. 交通運輸工程學報，2004,4(2):23-26.［4］JOHNSON R P, CAFOLLA J. Fabrieation of steel bridge girders with corrugated webs［J］. The Structural Engineer, 1997,75(8): 133-135.［5］徐岳,朱萬勇,楊岳.波形鋼腹板PC組合箱梁橋抗彎承載力計算［J］. 長安大學學報: 自然科學版，2005，25（2）：60-64.［6］郭金瓊. 箱形梁設(shè)計理論［M］. 北京：人民交通出版社， 1991:98-124.［7］黃劍源. 薄壁結(jié)構(gòu)的扭轉(zhuǎn)分析［M］. 北京：中國鐵道出版社，1983:78-112.［8］劉玉擎.組合結(jié)構(gòu)橋梁［M］.北京:人民交通出版社，2005:125-176.［9］李宏江，葉見曙，萬水，等. 波形鋼腹板箱梁的扭轉(zhuǎn)與畸變分析及試驗研究［J］.橋梁建設(shè)，2003（6）：1-4.
