**Experimental Investigation on Motions of Immersing Tunnel Element under Irregular Wave Actions**

Zhijie Chen1, Yongxue Wang2, Weiguang Zuo2, Binxin Zheng1 and Zhi Zeng1, Jia He1 *1Open Lab of Ocean & Coast Environmental Geology, Third Institute of Oceanography, SOA 2State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology China* 
