Text this: Structural responses of secondary lining of high-speed railway tunnel excavated in loess ground

 _____      ______    _____      ___      _  __  
|  __ \\   /_   _//  |__  //    / _ \\   | |/ // 
| |  \ ||   -| ||-     / //    | / \ ||  | ' //  
| |__/ ||   _| ||_    / //__   | \_/ ||  | . \\  
|_____//   /_____//  /_____||   \___//   |_|\_\\ 
 -----`    `-----`   `-----`    `---`    `-` --`