Advanced Materials Research Vols. 250-253

Abstract: The paper takes the examples of three representative city including Jilin, Harbin and Jiamusi, analyzes the phased evolution characteristics of urban morphology on the basis of internal relation between the cities and the water environment of Songhua River.

Abstract: Accidents of the cement manufacturers’ reinforced concrete silo structures frequently occurred currently in China, because of quality problems, causing enormous losses. The collapse status of a cement raw meal silo is investigated. Combined with the test results of the location and spacing of silo wall’s reinforcing bars, concrete strength, cracks and defects, the reasons for collapse of silo wall are analyzed and design recommendations for concrete silo structures are made. This can give reference to reinforced concrete silo structure design and construction in the future.

Abstract: During electricity generation in Hydropower Station, there’s pulsating pressure load on discharge flow, which induces vibration and fatigue damage on expansion joint structure. In this essay, through 3D Finite Element Method we conduct research about natural vibration characteristics of honeycomb duct of steel waterline pipe expansion joint under the condition of fluid-structure interaction, analyzing and researching the characteristics of vibratory modes with fluid-structure interaction on penstock between adjacent domains. By the above effort, we acquire the parameters of vibratory modes on structure, including those like natural frequency and corresponding vibratory modes of structural low level, which provides basis for structural vibration analysis.

Abstract: This paper introduces a method to apply time series analysis in dam deformation monitoring and prediction. We provide a simplified AR prediction model, which is relatively optimized in fitting constructive dynamic deformation features, analyzing deformation data and predicting deformation trend. We use this AR model in a certain dam’s deformation data processing, and prove it is an effective dynamic deformation prediction model.

Abstract: During electricity generation in the power station, the dynamic pulsating loads bring about vibration on penstock and expansion joint structure and lead to fatigue damage. This essay is mainly about doing research on flow-induced vibration response of power station expansion joint structure, putting the flow pulsating pressure load of expansion joint tested into numerical model to calculate, and making evaluations about its engineering safety. With regard to the problems existing in this engineering project, we bring forward the corresponding design proposal of optimization. The results of calculation indicate that the optimization program has a significant effect on controlling the decreasing amplitude of the max displacement and stress, which makes sure of the safety of generating system.

Abstract: In this paper, a new type SMA damper making use of SMA wire was designed. When the damper was in a tensile, compressed or tensional condition, the SMA wire is always in the condition of tension. The passive energy dissipation control of seismic vibration makes use of the super elasticity and high damping of tensile SMA wire. On the basis of the study of a 10-story building, five groups of the placement of the damper are used in time-history dynamic analysis .By contrasting the five different results, the influencing rules of the placement of the damper on seismic response of the structure can be concluded.

Abstract: Arched section consisted of a rectangle and a semicircle part. It is commonly applied in the field of hydroelectric engineering. The normal water depth computation equation for an arched tunnel is a transcendental equation and no analytic solution. In this paper, based on the mathematics transformation for the basis equation and the relationship analysis between the dimensionless normal water depth and the relative parameters, a new linear solution formula are established for the calculation of normal water depth for arched section tunnel according to the fitting principle. This method overcomes the shortage of other iterative trial calculating methods, such as complex calculation step, depend on the special chart and curve, and existed serious error. The new formula is simply and the maximum error is less than 0.6156% under the general engineering design range (ratio of normal water depth and arch radius is between 1 to 1.5416). it can be used on the engineering designing practice and the edit of the handbook of hydraulic structure design.

Abstract: With the rapid development of the real estate industry of china, the architectural decoration companies have been getting a good chance to prosper and develop. But it also faces to many problems, such as the increasing costs, the decreasing profit rate and so on. This paper presents an issue of using process approach and project lifecycle to manage decoration project, so that the decoration project management validity, constructing quality and construction cost control efficiency could be ensured well.

Abstract: Central Business District (CBD) is not only is the central district of a city, but also the product of economic and the third industry development. Meanwhile, in the metropolitan of China, there are large number requirements of the CBD construction for sub-regional cities. In Yangtze River Delta metropolitan, the cities such as Ningbo, Suzhou, Wuxi, Jiaxing, Huzhou, Shaoxing, Zhoushan, Yangzhou, Changzhou, Taizhou, Zhenjiang, Nantong, most of which GDP have reached 1000 billion Yuan and owned the initial economic base for the CBD construction. However, compared with the regional city or the world city, the sub-regional city’s CBD has the differences in scale, spatial form, the development operation and traffic patterns. In this paper, the sub-regional city in Yangtze River Delta— Changzhou is taken as research object，the CBD construction theory and urban design method are proposed to provide reference for similar area .

Abstract: Only by making intensive use of land to achieve highly compact, can a city achieve functional concentration and optimization to promote the urban sustainable development. To exploit urban underground space, the irreversibility of development should be considered and the guide rules and genre analysis of urban underground space development should be made with the emphasis on exploiting earth-covered construction, underground public buildings and underground complex.