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The new wall material had a fast development period in early this century. At that time, the usage ratio increased dramatically. Then the market leveled off this trend and the species as well as the usage ratio became stable. In term of the species, the major class is porous, aerated and energy saving material. There is big difference in choosing the new wall material for the projects with different size and functions. So it is reasonable to pide the public buildings into three classes by their construction area: large class (construction area ≥20000m2), normal class (20000m2> construction area ≥3000m2) and small class (construction area<3000m2). As shown in Fig.2 (b), the usage ratio of new wall material for the large class is much higher than the other two. This difference is corresponding to the construction structure and functions. The big public buildings mainly are commercial real estate and the small ones are typically used for the office building. Different functions will need different architectural forms and styles. All these will be affected in choosing the wall material. 3. Visualization database system In order to allow the administrations conveniently search and analyze the data and information, the visualization database software was developed based on Hangzhou’s GIS-based building energy consumption.
3.1. System structure Hangzhou’s GIS-based building energy consumption database system is based on the vector element. It combines the actual address and map coordinate as a data point then linked the point with the visual map. The data point in this system, also linked with the visual map, is consisted of address as well as datasheet and numeric field. As the original project address does not follow standard criteria, it will be double checked by computer, internet or people. As long as the project address is correct, the corresponding data point will be compared and then linked with Hangzhou’s GIS-based building energy consumption database system. For these unmatched addresses, they would be directly searched in map and the data points would be mapped with system manually. Then the basic information of the project and new wall material could be visualized shown in the system. This system also has a strong function for the geology statistics and data analysis. 3.2. System display The display system is based on ArcGIS (Fig. 3).
The system includes project basic information, the distribution for different new wall material, the usage statistics and relevant data for future checking and searching. In this way, the abstract data could be intuitively displayed, easily updated and revised. The data utilization is also improved.
4. ConclusionThe database is the foundation for the administrations to develop the policy and to promote the research and the market use of the new wall materials. The roadmap of the technology and market development is clearly found through the analysis of the database. In this system, however only the framework has been established and some data imported. The analysis function still should be improved and more data need to be arranged and imported, so as to make the system serve as an important component for energy saving cause in the future. This work was funded by 2008 Science and Technology Plan Projects of Hang Zhou: “The database of energy-saving building wall’s thermal performance in Hangzhou”. References [1] N.F. Yi. Development of New Wall Materials. Science & technology information. Vol.14(2007) [2] Zhu. W.,Chen H.x., He H.H., Yu X.F., GIS Construction in Community Scale. 3 International Conference on Management and Service Science, Wuhan, 2009
摘要：基于建设行政主管部门的记录建立一个新的节能墙体材料数据库。通过对数据进行分析，结果发现，自1994年以来，大部分的新型墙体材料被市场竞争淘汰，并且大规模建设项目比起小规模的建设项目将更愿意使用新型节能墙体材料。该数据库基于GIS还建立了可视化应用程序，用以帮助管理，使制定政策更舒适.