湖南大学学报（自然科学版）
湖南大學學報（自然科學版）
호남대학학보（자연과학판）
Journal of Hunan University (Natural Sciences)
2015年
9期
89-95
,共7页
桥梁结构%正交异性桥面板%夹层结构%简单支承%稳定性能%实验及数值计算
橋樑結構%正交異性橋麵闆%夾層結構%簡單支承%穩定性能%實驗及數值計算
교량결구%정교이성교면판%협층결구%간단지승%은정성능%실험급수치계산
bridge construction%orthotropic bridge decks%sandwich structures%simply supported%stable capacity%experimental and numerical calculation
采用实验和数值计算方法，研究了简支正交异性钢板聚氨酯夹层桥面板的稳定性能。通过弹性稳定计算研究了该种桥面板几种参数变化对前4阶屈曲模态的影响，以及考虑材料及几何非线性稳定计算对临界荷载的影响。结果表明：夹层桥面板处于受压状态时，车轮作用对顶、底面钢板应力的影响程度会有较大差别；芯层厚度、纵向加劲肋间距、钢面板厚度3个参数中，前两个参数对桥面板的稳定性能影响较大；设计时建议先设定合理的夹层板厚度，再通过试算选择纵向加劲肋间距，工作量会较少。
採用實驗和數值計算方法，研究瞭簡支正交異性鋼闆聚氨酯夾層橋麵闆的穩定性能。通過彈性穩定計算研究瞭該種橋麵闆幾種參數變化對前4階屈麯模態的影響，以及攷慮材料及幾何非線性穩定計算對臨界荷載的影響。結果錶明：夾層橋麵闆處于受壓狀態時，車輪作用對頂、底麵鋼闆應力的影響程度會有較大差彆；芯層厚度、縱嚮加勁肋間距、鋼麵闆厚度3箇參數中，前兩箇參數對橋麵闆的穩定性能影響較大；設計時建議先設定閤理的夾層闆厚度，再通過試算選擇縱嚮加勁肋間距，工作量會較少。
채용실험화수치계산방법，연구료간지정교이성강판취안지협층교면판적은정성능。통과탄성은정계산연구료해충교면판궤충삼수변화대전4계굴곡모태적영향，이급고필재료급궤하비선성은정계산대림계하재적영향。결과표명：협층교면판처우수압상태시，차륜작용대정、저면강판응력적영향정도회유교대차별；심층후도、종향가경륵간거、강면판후도3개삼수중，전량개삼수대교면판적은정성능영향교대；설계시건의선설정합리적협층판후도，재통과시산선택종향가경륵간거，공작량회교소。
The stable performance of the orthotropic bridge deck with simply supported,made from steel-polyurethane sandwich plate,was studied by means of experiments and the numerical calculation method.The impact of several parameter changes of the bridge deck on the first four order buckling modes was analyzed through the calculation of elastic stability,and the impact of material nonlinearity and geo-metric nonlinearity of structure on the critical load was also analyzed.The results have shown that,when sandwich bridge deck is in a state of compression,the influence degree of the wheel effect on the top and bottom steel plate stress will be quite different,and that,among the three parameters,i.e.the core layer thickness,the longitudinal stiffener spacing and steel plate thickness,the first two parameters have a grea-ter influence on the stability of the bridge deck.When designing the orthotropic sandwich bridge deck,it is recommended to set a reasonable thickness of sandwich plate at first,then to choose the longitudinal stiff-ener spacing by trying to calculation in order to reduce the workload.
