نتایج جستجو برای: ground vibration

تعداد نتایج: 190880  

2014
David Thompson

Railways are an environmentally friendly means of transport that offer many advantages for sustainable development. However, noise and vibration remain a major reason for objections to new lines or network expansions. Railways will never be silent but, it is nevertheless important to reduce their noise and vibration as much as possible while not adding unnecessary cost or complication to their ...

2003
V. V. Krylov

During the last decade Railways have become one of the most advanced and fast developing branches of transportation technology. The reason is very high speeds achievable by the most advanced modern trains (French TGV, German ICE, Italian Pendolino, Swedish X2000, Spanish AVE, Belgium Thalys, the Eurostar) and very low air pollution per passenger compared with road vehicles. Unfortunately, the i...

2004
Cedric Roberts

Mount Coonowrin located in the Sunshine Coast hinterland north of Brisbane, is one of a scattered group of peaks and hills that constitute the Glasshouse Mountains and which is protected within the Glasshouse Mountains National Park. Concern about visitor safety in relation to rockfalls on the mountain were supported by the results of two geotechnical studies and led to the closure of this sect...

2016
J. Y. Shih

When trains run on soft ground, large deflections of the track and vibration of the ground can occur when the train speed approaches the speed of Rayleigh waves in the ground. Modelling is helpful to understand and mitigate such critical velocity effects. Here, a three-dimensional time-domain model of a load moving on a track and ground has been developed in the finite element software ABAQUS. ...

2012
Geert DEGRANDE Geert LOMBAERT

Pavement breaking generates a high level of ground vibration that is potentially damaging to nearby buildings and infrastructures. In this paper, a numerical model for the estimation of the impact load due the blow of a falling-weight pavement breaker is first developed. The estimated impact load is in good agreement with the experimental result. Next, the fracturing of the concrete road is inv...

2014
Jou-Yi Shih David Thompson Antonis Zervos

As high-speed trains operate in more and more countries and their maximum speed increases, the vibration induced by the train has become an important issue. The dynamic coupling between the vehicle, track and ground has to be assessed for its effects on safety, stability and maintenance costs. A particular issue, especially for soft soils, is the critical speed at which the train reaches the wa...

2016
V. Krylov

In the present paper, the theory of generation of ground vibrations by moving train is considered. The theory takes into account contribution of each sleeper of the track subjected to the action of all wheel axles. Mechanical properties of the track and parameters of train and soil (including static contact nonlinearity of track-soil system) are taken into account. It is shown that generated gr...

2003

In control of a linear collider, the ground motion is one of the big problems. Various things can be considered as a factor of the ground motion, environmental vibration, atmospheric pressure variation, and the earth tides, etc. This time, we measured the slow ground motions using the tunnel of the underground hydroelectric power station "Shintoyone" located in the granite region. For the follo...

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