Applied Mechanics and Materials Vols. 633-634

Abstract: Through analyzing construction method specimens parameter detection and external pressure loading test,test drainage construction technical indicators reinforced concrete pipes,cracks load,failure load,local deformation and overall deformation,research and evaluation of the performance of its force drainage construction quality management.

Abstract: In the downstream of Yangtze River where there is abundant silt resources, perforated brick which fired by sludge, supplemented by reflective insulation coating to replace the widely used polystyrene insulation materials. It can achieve requirement of A-class fire prevention for heat preservation wall. The heat insulation performance of not painted thermal wall and composite thermal insulation wall painted by reflective insulation coating were compared. Data results show that heat insulation performance of the wall painted is much better than that of the not painted wall.

Abstract: In this paper, sulphoaluminate cement was used to design a high early age strength self-leveling mortar. The properties of self-leveling mortar was investigated in different mixing proportion of sulphoaluminate cement, including fluidity, flexural strength and compressive strength. In addition, XRD was used to analyses the hydration products of compound gel system. The results show that sulphoaluminate cement can adjust the workability of self-leveling mortar and limit the rate of bleeding. Meanwhile, sulphoaluminate cement can raise the flexural and compressive strength. However, the mixing proportion should be held within the scope of 25%. The XRD results indicate that the formation of ettringite mainly improves the early age strength of self-leveling mortar.

Abstract: The article deals with the results from the analysis of the materials properties based on portland cement, polyalcohol and iron-bearing mineral assemblage. These materials are proved to possess higher compressive strength and lower shrinkage properties first and foremost, and besides they secure appropriate structural properties under a design project as well. On the grounds of the tests carried out it has been suggested to use the mix design of glycerin with portland cement and iron-bearing mineral assemblage with the purpose to obtain the material having the high compressive strength and most nearly lacking the shrinkage properties.

Abstract: This essay analyzes stress between pile and soil, occupying moisture content data of unsaturated soil in Nanchang with ANSYS. In accordance with engineering practice, it adopts three-dimensional solid model, the same geometric size with engineering practice. It simulates interrelation between pile and soil with contact unit, and shows ontology relation of soil with D-P elastic-plastic model. Convergence has been made with selection and calculation of parameter. The greater the moisture content gets, the smaller the pile body vertical displacement makes. In other words, the smaller the relative displacement between pile and soil gets, the lower the lateral extrusion stress from pile to soil becomes. Keywords: unsaturated soil; shear strength; pile bearing capacity; finite element analysis; moisture content

Abstract: The major part of seismically active Central Asian countries is presented by large-scale sub-mountain upland areas with complex engineering and geological conditions and surface topography as a rule. Plains and flatlands (valleys) in Tajikistan and Kirgizstan account for 10%, and all the rest areas are presented by mountains. Lack of agricultural area is considered to be a pending problem and calls for urgent solution. One of the efficient ways to solve this problem is to develop sub-mountain (hilly) areas which can make it possible to increase level of agricultural production and expand areas for buildings construction. The article deals with sub-mountain development experience based on the case of Tajikistan which can be valuable for different regions.

Abstract: Changing a layer of weak soil in deformed foundation with a compacted soil bed consisted of various strong materials (sand, gravel, pebble-gravel, production waste materials). Existing calculation methods and techniques to build compacted soil beds based on weak highly compressive soils do not meet up-to-date requirements. Calculation methods used the dimensions of compacted beds quite often appear to be overestimated, and this results in increase in costs and working hours needed to build artificial foundation. The paper presents the possibility of using reinforced soil beds as an efficient method to build artificial foundation based on weak soils.

Abstract: On the premise of protecting traditional styles of the dwellings, performances of thermal insulation and anti-radiation performances of traditional wooden dwellings of Tujia Minority in West Hunan and the interior thermal environment were improved through technological improvements in this paper. By improving wall construction technologies, thermal insulation boards and wooden planks were added to exterior walls of these dwellings. Furthermore, a two-layer air cavity formed and thus greatly improved thermal resistance of walls. Meanwhile, feasibility of improvement technologies proposed in this paper was validated by practical engineering tests and data detected before and after tests

Abstract: In this paper, taking Shanghai residential area as the main body, and through the research and analysis to the main two residential types in Shanghai area and regard solar energy visor as the research object, explore the characteristics and design method of it. According to the Shanghai annual solar radiation data, using the histogram method and analyze the regional characteristics of Shanghai area, provide reference and basis for residential building solar visor design.

Abstract: The new damage assessment criteria of reinforced concrete column was analyzed and defined in the paper. RC column finite element analysis model was established, then damage patterns of the explosion impact on RC column are obtained by means of numerical simulation. The P-I curve of RC column is ascertained. Based on damage criteria and finite element analysis result, we put forward a simplified numerical method to ascertain RC column P-I curve. By contrast, the applicability and validity of simplified numerical method is satisfactory.