Mechanics properties of lime-steel slag stabilized soil for pavement structures are investigated. Firstly, the chemical composition of the fine grain steel slag is analyzed by spectral analysis test. In view of the materials compositions, 5 kinds of mix proportion projects are defined. Compaction tests of all mix proportion projects are carried out in different water conditions to obtain the optimum moisture contents. Then the optimum mix proportion project is demarcated by the unconfined compressive strength test and the compression rebound modulus test. Finally, the pavement structures design for a highway of lime-steel slag stabilized soil road sub-base is made. As comparisons, the pavement structures of other types of lime industrial wastes stabilized soil road sub-base are computed. It is shown that lime- steel slag stabilized soil is suitable for flexible pavement or semi-rigid pavement because of its good strength and rigidity which can effectively reduce thickness of the lower pavement and basic deflection.

This paper presents the thermal stress characteristics of polystyrene plate - thin plaster wall. Based on thermal stress analysis module of ANSYS software, a three-dimensional element solid5 is selected to mesh the wall model, which can simulate the coupling effects of thermal stress and structural stress field. The critical temperature of hot and cold cycles is taken as the critical temperature condition, which is imposed on the calculation model. Windowless Wall and window wall were modeled separately. Temperature field, thermal stress, and deformation distribution were proposed after comparing and analyzing the two simulation results. Numerical simulation results indicate that: (1) Whether in high or low temperatures, window or windowless, polystyrene plates thin plaster wall insulation system has very good thermal insulation properties；(2) Polystyrene plate - thin plaster wall insulation system is influenced by the temperature stress. Different stress fields concentrate significantly around windows and in the middle of wall especially around the windows. In fact, it is relatively same as the law of cracks around the windows.

In this paper, the thermal stress characteristics of polystyrene plate - thin plaster wall are present. A three-dimensional element is selected to mesh the wall model, which can simulate the coupling effects of thermal stress and structural stress field. Thermal stress and deformation distribution are proposed after comparing and analyzing the two simulation results. Numerical simulation results indicate that: (1) Polystyrene plates thin plaster wall insulation system has very good thermal insulation properties；(2) Different stress fields concentrate significantly around windows and in the middle of wall especially around the windows. (3) The deformation of the polystyrene plate - thin plaster wall insulation system reach the maximum at the edge of the wall while the minimum in central.

No abstract

This paper presents the results of an outdoor investigation of wind-drifted snow distribution around a cube. The test was performed in a simple outdoor wind tunnel at Harbin in January 2009. Velocity distribution around the cube and pressure coefficient on the cube surfaces are also simulated with computational fluid dynamics (CFD). The simulation is based on homogenous two-phase flow theory, where the flow field is predicted by solving Navier-Stokes equations for transient, incompressible viscous flow. The inlet profiles of the simulation adopted data got from wind tunnel. Comparison between the test result and that of simulation shows that velocity is closely related to the snow distribution.