Advanced Materials Research Vols. 243-249

Abstract: This paper carries on the analysis from the perspective of the life cycle cost of coastal concrete structures’ durability. On the first place, this paper defines the scope and stages of life cycle of concrete durability. Second, the paper studies the influence factors of life cycle cost, and constructs an analysis model. Finally, it constructs and analyzes five solutions of concrete durability of the Shenzhen expressway project. The analysis results reveal that the life cycle cost about coastal concrete is a complex and dynamic system, which may influenced by many factors. The change of each factor will inevitably affect the selection of technology. At the same time, compared with the United States, maintenance-related labor costs and the price of concrete is much lower in China, so the results from the analysis, it seems that the advanced technologies related to the durability are not the more economic solution currently. However, if the changes about these factors are considered, the analysis results are different.

Abstract: By using Genetic Algorithms (GAs), a resource-integrated model is presented to identify the relationships between project time and cost in consideration of the changes in resource efficiency under different working durations. Under the assumption of a non-linear quadratic relationship between resource efficiency and working duration, the minimum and maximum project costs for different project completion times are easily identified and the trade-off relationships between the project time and cost are clearly presented by using the proposed model and a case study. The research results logically suggest that the greater the adjustable range of activity durations, the lower the minimum project cost for a specific project’s completion time will be, and the greater the value of an activity is, the later the activity will be adjusted.

Abstract: In bid evaluation, the regular grade method on the grade items is that the grade message is composed of average value after throwing away the highest and lowest value, which essence is considered that the expert’s weight is zeroed. It is pointed the processing is too simple and unable to deal with all kinds of problems effectively in the match. Basing on numerical statistics, referencing multiple attributes and comprehensive decision theory, a grade method is put forward to empower expert weight. The method according to the results consistence of the expert grade determines the grade weight, then correcting their grade weight to each specific bid, fully using all grade message coming from the bid evaluation team. Its computation is simple and easy to computer processing. So it has larger practical value. Last, the new method is used in bid evaluation on excavation support project located in Wenchang Garden, Yantai Development Zone. It shows the practical value of this method.

Abstract: This paper expounds the developing stage of the theory on risk management for the construction project at home and abroad, and proposed future research direction. Constuct the product has compared with other products large-scale, long period, production of single characteristicses, such as piece and complexity...etc., in the process of carrying out in exist many factors of indeterminations, therefore have larger risk than the general product production. However, the construction engineering risk management level of our country still pretty much fall behind, is the weak link that the our country constucts realm, haven't formed effective construction engineering risk management system, make construction engineering dispute have occurrence and continuously get stripe. Therefore, establishment effective of the risk management system seem to be is importance.

Abstract: The implementation of urbanization strategies to speed up the urbanization is not only a historical process in realizing the modernization in China but also the key to solving the present and future problems in the economic and social developments. Meanwhile, the real estate industry is developing rapidly with the quickening pace of urbanization, By studying the existing problems and strategies in the real estate industry of Qinhuangdao, this paper points out the related measures to solve the problems in the harmonious developments of the real estate industry and urbanization, which is very important in the management of real estate industry.

Abstract: Based on the factor analysis of construction plan and optimization of construction schemes to address multi-objective decision problems, this paper proposed using the principle of information entropy method to determine the weight, taking into account the influence of indicators weight to the results of the evaluation, and then selecting the best program. This scheme has certain reference value for the construction contractor to choose the appropriate construction plan.

Abstract: In this paper the contribution of scientific and technological progress (STP) in economic growth in Anhui province’s construction industry from year 1999 to year 2009 was analyzed by total factor productivity (TFP) method, and the role of TFP in the transformation of economic growth pattern in Anhui province’s construction industry and in corporations’ efforts to enhance industrial competitiveness was analyzed. It found that the key influencing factors in Anhui province’s construction industry’s economic development were capital input and labor input which its growth was driven by resource elements aggregation and its TFP played a poor role. To enhance TFP will be the only way to constructing industry’s sustainable development and to effectively increasing construction industry companies’ core industrial competitiveness.

Abstract: From energy conservation to green building to low carbon building, the construction industry’s sustainable development research has been undergoing and exploring continuously. The future sustainable buildings will focus more on reducing carbon emission, energy conservation, green and environmental protection. This article will analyze several paths to realize low carbon architectures from different aspects like green building materials, energy conservation, overall design, and green construction and evaluation systems.

Abstract: The natural environment and traditional thoughts have very big effect on the low carbon ecological of technology of traditional dwellings in Southeast of Shanxi, while the traditional local-style dwelling houses built environment naturalness and specific circumstances residential construction energy strategy that both make the traditional dwellings adapted well to the local ecological environment, make the person, architecture, environment got harmonious unification.

Abstract: This paper has analyzed the current living conditions in China. It is necessary for the traditional space to be existed. It can not only abide by the nation policy but also can satisfy the need of the pleasurable feelings for the yard, then to construct a Spiritual Garden. Takes Wuhan Zhili Imperial Yard Villa for example, this paper introduced the application of the new technology in traditional space in order to create comfortable living conditions.