| The acceleration response of the sandwich type composite pavement which consists of three components, namely, the cross tensioned concrete pavement (CTCP), the asphalt sand (AS) stress-absorbing layer, and the continuously reinforced concrete pavement (CRCP), from top to down, is experimentally studied under different heavy vehicle impacts. First, the acceleration response spectra of CTCP and CRCP are measured by the embedded accelerometer under the axle loads of 100, 200 and 300 kN, respectively. The statistical mean of the ratio of CTCP and CRCP accelerations is defined as the stress-absorbing factor of the AS stress-absorbing layer. After that, the frequency spectra of the pavements are received from the Fourier transformation of 3 groups of acceleration response spectra. The test results show that under the 3 groups of axle loads the acceleration max peak values of CTCP are 0.022, 0.039 and 0.059 m·s-2, those values of CRCP are 0.010, 0.015 and 0.025 m·s-2, and the stress-absorbing factors of the AS stress-absorbing layer are 3.15, 3.38 and 3.46. It can be known that the sandwich type composite pavement is suitable for the application in the heavy traffic, because the AS stress-absorbing layer can effectively decrease the pounding of the heavy vehicle on the pavements. |
优惠券领取后72小时内有效，10万种最新考研考试考证类电子打印资料任你选。涵盖全国500余所院校考研专业课、200多种职业资格考试、1100多种经典教材，产品类型包含电子书、题库、全套资料以及视频，无论您是考研复习、考证刷题，还是考前冲刺等，不同类型的产品可满足您学习上的不同需求。 ...考试优惠券 本站小编 Free壹佰分学习网 2022-09-19