损伤概率 meaning in English
damage probability
Examples
- Again , a simple supported beam with stochastic mass density is used as an example . its statistics ( the mean value and the variance ) are calculated and compared with the theoretical values to verify the correctness of the used formulas . eventually this becomes the theoretical basis of the probability damage identification of the bridges
3 .对于简支梁桥，用该方法进行损伤识别，无论何种情况，识别结果都比较理想:对于有损伤单元，其单元损伤概率达到98 %以上;对于无损伤单元，其单元损伤概率一般都小于10 % ，可以认定，这些单元发生损伤的情况为小概率事件，即不发生损伤。 - The third part : according to the verified structural damage identification method and supposing the to - be identified parameters to be independent and have normal distribution , the scheme of identifying bridge structure damage is proposed by using the probability damage identification method . assume the zero - order , the first - order and the second - order perturbation statistics of the frequencies and the mode shapes of the bridge structures are known , and substitute them into the statistics property formulas of the frequencies and the mode shapes , as a result an objective function including the mean values and the variance of all the identified parameters is established . set
对于连续梁桥，当损伤位置位于跨中附近时，大多数无损伤单元的损伤概率均在10 %左右，可作为小概率事件，不发生损伤，但与损伤单元相邻的无损伤单元，其损伤概率达到20 %以上，很难被排除，只有对这些单元进行二次识别，才能得到比较可靠的计算结果;如果损伤位于支点附近时，则不会出现上述情况，对于无损伤单元，损伤概率都小于10 % ，不发生损伤，损伤识别结果