"中村毅,石田交広,井川直大","既存送電用トラス鉄塔における重ね継手を有する山形鋼部材の座屈耐力に関する研究",,"日本鉄塔協会誌",,,"No. 130","pp. 14-27",2021,July
"中村毅,石田交広,井川直大","既存送電用トラス鉄塔における重ね継手を有する山形鋼部材の座屈耐力に関する研究",,"鋼構造論文集",,"Vol. 27","No. 108","pp. 83-91",2020,Dec.
"井川直大,五十嵐規矩夫,三井和也","中間スチフナで補剛された上フランジ連続拘束梁の座屈性状と補剛位置決定法",,"日本建築学会構造系論文集",,"Vol. 85","No. 777","pp. 1491 - 1500",2020,Nov.
"井川直大,五十嵐規矩夫,三井和也","上フランジ連続完全拘束Ｈ形断面梁の弾性横座屈耐力に及ぼす中間スチフナ補剛の影響","日本建築学会大会（関東）","日本建築学会大会学術講演梗概集（関東）",,,,"pp. 945-946",2020,Sept.
"五十嵐規矩夫,井川直大,柳下義博,三井和也","水平スチフナにより補剛されたウェブの座屈性状および水平スチフナの設計法",,"日本建築学会構造系論文集",,"Vol. 85","No. 773","pp. 957 - 967",2020,July
"N. Igawa,K. Ikarashi","Effect of Stiffener Position on Buckling Behavior of H-Shaped Steel Beam with Upper Flange Restraint","The International Colloquim on Stability and Ductility of Steel Structures",,,,,,2019,Sept.
"井川直大,五十嵐規矩夫","横座屈を生ずる上フランジ連続拘束H形断面梁の中間スチフナ補剛に関する基礎的検討","日本建築学会大会","日本建築学会大会学術講演梗概集",,,,"pp. 1043-1044",2019,Sept.
"井川 直大,五十嵐 規矩夫","上フランジ完全拘束H形断面梁に対する中間スチフナ補剛",,"鋼構造年次論文報告集","日本鋼構造協会","Vol. 26",,"pp. 69 - 74",2018,Nov.
"井川 直大,五十嵐 規矩夫","上フランジを完全拘束されたH形断面梁の座屈性状に及ぼすスチフナ補剛位置の影響","日本建築学会大会","日本建築学会大会学術講演梗概集",,,,"pp. 1139-1140",2018,Sept.