The essay deduces the formula of the high finite strip method analysis of the thin-walled curved box girder bridge and its program, then proves their correctness;
推导弯曲薄壁箱梁桥高阶有限条法分析的公式及程序，并验证其正确性。
With ANSYS program, a comprehensive analysis is carried out for the lateral stability of Yingnahe bridge. The critical loads' formula previously concluded in the 3rdpart is checked.
运用ANSYS这一大型有限元商业软件对英那河水库坝下大桥进行了详细的稳定性分析，验证了本文利用能量法临界荷载公式。
With ANSYS program, a comprehensive analysis is carried out for the lateral stability of Yingnahe bridge. The critical loads' formula previously concluded in the 3rdpart is checked.
运用ANSYS这一大型有限元商业软件对英那河水库坝下大桥进行了详细的稳定性分析，验证了本文利用能量法临界荷载公式。
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