急求英语作文一篇，谢谢！

Based on the updated model of the cable-stayed bridge of the Runyang Bridge and the numerical
simulation analysis, this paper investigates the cable damage identification for the cable-stayed bridge
according to the changes of frequencies, modal curvatures and cable forces, and achieves the following
conclusions:
1) The damage in cables reduces the frequencies of vertical bending modes for the bridge, and the
decreasing amplitude increases with the enhancement of cable damage extent and the addition of
damaged cable amount;
2) The frequency changes of various vertical bending modes display different sensitivities to the
locations of damaged cable, as can be applied to the assessment of damaged cable locations.
3) The modal curvatures of the lower vertical bending modes of the girder are able to successfully
identify the position of damaged cable in most damage situations, except for the cases of any two
simultaneously