| 测值日期 | ①锁定荷载(kN) | ②实测值(kN) | ③等于当年年末值 − 上年年末值 | ④等于① − ② | ⑤等于(① − ②)÷①×100% |
| 年变化量 | 荷载损失量 | 荷载损失率% | |||
| 2004-4-9 | 838.1 | 838.10 | / | / | 0.00 |
| 2004-12-22 | 838.1 | 785.66 | −52.44 | 52.44 | 6.26 |
| 2005-12-22 | 838.1 | 786.42 | 0.76 | 51.68 | 6.17 |
| 2006-12-22 | 838.1 | 786.87 | 0.45 | 51.23 | 6.11 |
| 2007-12-20 | 838.1 | 795.80 | 8.93 | 42.30 | 5.05 |
| 2008-12-27 | 838.1 | 795.83 | 0.03 | 42.27 | 5.04 |
| 2009-12-22 | 838.1 | 796.43 | 0.60 | 41.67 | 4.97 |
| 2010-12-29 | 838.1 | 801.84 | 5.41 | 36.26 | 4.33 |
| 2011-12-29 | 838.1 | 804.30 | 2.45 | 33.80 | 4.03 |
| 2012-12-28 | 838.1 | 805.85 | 1.56 | 32.25 | 3.85 |
| 2013-12-25 | 838.1 | 807.20 | 1.34 | 30.90 | 3.69 |
| 2014-12-25 | 838.1 | 809.24 | 2.04 | 28.86 | 3.44 |
| 2015-12-30 | 838.1 | 809.46 | 0.23 | 28.64 | 3.42 |
| 2016-12-12 | 838.1 | 811.20 | 1.74 | 26.90 | 3.21 |