Application of Results of Tests in Developing a Two-Dimensional Model for Soil–Steel Railway Bridges

Abstract

This paper presents an analysis of the possibilities for the application of a two-dimensional model based on a circumferential strip of soil-steel structures that used results of measurements on railway soil-steel bridges. View itemEnvironment December 2017 CO2 emissions and expansion of railway, road, airline and in-land waterway networks over the 1985-2013 period in China: a time series analysis Li, X, Fan, Y, Wu, L With the expectation that transportation will contribute 30-40% of the total CO2 emissions in China in the near future, there is an imminent need to identify how the development of different transportation modes may have different long-term effects on CO2 emissions. Using time series data over the period of 1985-2013, this paper applies the combined autoregressive distributed lag (ARDL) and vector error correction model (VECM) approach to identify short-and long-run causal relationships between CO2 emissions and modespecific transportation development, including railway, road, airline, and inland waterway.

Construction loads of the soil-steel structures

“…The dependence of the shell deformation -the impact of the soil There are two structural subsystems [2], [1], [4], [8] in the models of ground and coating objects: the coating and the remaining part in the form of ground backfill (and the surface with the foundation of the roadway). The interaction between them is modeled as a contact interaction (interface) in the form of surface forces, distributed from the rule into two components: normal p and tangent t, as in Figure 2.…”

“…In the thesis, susceptible engineering structures are analyzed on the example of bridge ground and shell structures. Their characteristic feature, unlike the classic bridges, is the high impact of ground backfill and road surface as supporting elements [2], [1]. In the work, the building phase of the object is considered when there is a minimum thickness of the backfilling cover (backfill over the coating) and there is no surface.…”

The vehicle impact on the corrugated steel shell in soil-steel structures

“…The effect of co-operation with the soil is seen as apparently relieving the susceptible coating by creating a natural vault on the ground. The intensity of the soil's influence on the supporting structure depends on the stiffness of the coating in relation to the surrounding backfill [8,11,12]. In rigid construction, they have completely different roles.…”

“…When the movements of the analyzed construction point are registered, a graph is generated, depending on the location of the highlighted vehicle axis (reference) coordinate xp. When the vehicle moves at low speed its dynamic impact is limited, it is usually assumed to be a quasi-static load changing its position [6,11,13].…”

“…In the case of the car configuration, there may be a deflection w = 0 despite the full car load. An important result of these measurements is the achievement of w = 0 after the passage of the car usually remain residual deformations [2,4,6,9,11,17]. Figure 4 presents the implementation of the concept of a rolling load -a car stopped while driving in five positions.…”