ISSN 2096-4498
CN 44-1745/U
ISSN 2096-4498
CN 44-1745/U
Experimental Study of Dynamic Cumulative Damage Model for Highspeed Railway Tunnel
Received date: 2017-03-10
Revised date: 2017-05-13
Online published: 2017-08-22
The characteristics of dynamic cumulative damage of lining structure of highspeed railway tunnel under the longterm vibration load of train and the dynamic similar material model test for concrete structure should be well known. A fullface tunnel test model for the dynamic interaction between Jinshazhou Tunnel on WuhanGuangzhou Highspeed Railway and surrounding rocks is established by using microconcrete as similar material; and then the vibration load of highspeed train is brought to bear on the model to carry out dynamic cumulative damage test; meanwhile, the characteristics of dynamic response and the cumulative damage law of tunnel lining structure are analyzed by collected data of dynamic strain of tunnel lining structure, velocity of ultrasonic and contact stress of surrounding rock under tunnel during test. The results show that under the longterm action of vibration load of highspeed train, the dynamic cumulative damage of tunnel lining structure is not obvious while that of surrounding rock under tunnel is obvious.
WANG Xiangqiu , ZHANG Huojun , XIE Wenxi . Experimental Study of Dynamic Cumulative Damage Model for Highspeed Railway Tunnel[J]. Tunnel Construction, 2017 , 37(8) : 939 -945 . DOI: 10.3973/j.issn.1672-741X.2017.08.004
/
| 〈 |
|
〉 |