Ryoya Isoai2, *Masanori Sugawara1, Tomokazu Kaifu1, Yuki Kikuchi1, Kenichi Maeda2, Naoto Naito3, Takuro Nakamura4(1. Koken Engineering Co., Ltd., 2. Nagoya Institute of Technology, 3. Toyohashi University of Technology, 4. Civil Engineering Research Institute for Cold Region)