Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Yoshiji Matsumoto"'
Publikováno v:
Doboku Gakkai Ronbunshu. 1991:173-176
本稿は, 急曲線区間における車輪のころがり・すべり摩擦が、輪軸のねじり振動を励起し波状摩耗を発生させる過程に, 車輪と軌道の相互作用に起因する輪重変動が与える効果を理論的に
Autor:
Yoshiji Matsumoto, Katsuya Okada
Publikováno v:
Doboku Gakkai Ronbunshu. 1991:37-44
断熱処理によるつらら防止工法は, つららや側氷を発生する多くのトンネルで施工されている. 周期的に変動するトンネル内気温の減衰モデルを, 断熱材・覆工・地山からなる非定常熱伝
Autor:
Yoshiji Matsumoto
Publikováno v:
Doboku Gakkai Ronbunshu. 1991:23-28
Publikováno v:
Doboku Gakkai Ronbunshu. 1991:99-106
Rail corrugation is one of the most serious problems of modern railway tracks, which may cause prompt destruction of tracks. This paper presents theoretically a generation mechanism of rail corrugation at curved tracks having short radius based on ro
Publikováno v:
Doboku Gakkai Ronbunshu. 1990:197-205
Autor:
Katsuya Okada, Yoshiji Matsumoto
Publikováno v:
Doboku Gakkai Ronbunshu. 1990:179-186
In many tunnels, icicles and side-wall ices usually grow, and frost heaves at back of lining occur. This paper deals with some actual states of frost penetration depth in railway tunnels and its simulation analysis. First, daily fluctuations and maxi
Autor:
Katsuya Okada, Yoshiji Matsumoto
Publikováno v:
Doboku Gakkai Ronbunshu. 1990:145-152
In many tunnels, icicles and side ices grow in cold climate. Against such a background we usually adapt an icicle prevention by adiabatic treatment for railway tunnel. We previously proposed optimum materials and optimum depth of heat insulator in co
Autor:
Katsuya Okada, Yoshiji Matsumoto
Publikováno v:
Doboku Gakkai Ronbunshu. 1988:171-177
This paper deals with the optimum method of a heat insulator for an adiabatic icicle prevention at tunnel-lining surface. The atmospheric conditions, which consist of yearly mean temperature, yearly amplitude and daily amplitude, are estimated as sta
Publikováno v:
Doboku Gakkai Ronbunshu. 1986:161-169
In the previous paper, the authors proposed the design formula which was based on the distortional strain energy stored at each stage of tunnelling. In this paper, the side pressure coefficient k and elastic constant ER of ground are firstly studied
Publikováno v:
INFRASTRUCTURE PLANNING REVIEW. 4:221-228
Qualitative characteristics such as seat availability influence greatly on traveler's modal choice. The concept of Seating Utility was already proposed to evaluate commuter's train choice behaviour based on seat preference. In this paper, the method