西南地区复合木混合结构建筑经济性评价研究

Study on Economic Evaluation of Composite Wood Hybrid Structure in Southwest China

为实现复合木混合结构建筑在西南地区的应用及低耗能建造,其经济性评价至关重要,紧依西南地区抗震设防等级高、林木资源充足的特点,基于绿色经济理论构建包含经济效益、环境效益、社会效益3个一级指标和11个二级指标的西南地区复合木混合结构建筑经济性评价指标体系;提出一种基于AHP-熵权法组合赋权法的物元可拓模型,通过西南地区已建成项目实例对复合木混合结构建筑、钢筋混凝土结构建筑和砖混结构建筑进行经济性评价分析。结果表明:复合木混合结构建筑经济性评价结果与工程实体一致,凸显评价体系对于复合木结构的适用性、正确性;同时评价得出复合木混合结构建筑经济性良好,优于砖混结构建筑和钢筋混凝土结构建筑,在西南地区应积极加以推广应用,满足建筑结构环保化及可持续发展的同时,有力提升西南地区建筑结构防灾能力和减灾水平。

To achieve the application and low energy consumption construction of composite wood hybrid structure buildings in Southwest China,economic evaluation is crucial.Relying on the characteristics of high seismic fortification level and sufficient forest resources in Southwest China,based on the green economy theory,an economic evaluation index system that includes three primary indicators of economic benefit,environmental benefit and social benefit and eleven secondary indicators for composite wood hybrid structure building in Southwest China is established.An extension matter element model is established based on the AHP-entropy combination weighting method.Taking the examples of completed projects in Southwest China as an example,the economic evaluation of composite wood hybrid structure buildings,reinforced concrete structure buildings and brick concrete structure buildings are analyzed.The results indicate that economic evaluation results of composite wood hybrid structure building are consistent with the engineering entities,which highlights the applicability and correctness of the evaluation system for composite wood hybrid structures.At the same time,it is evaluated that composite wood hybrid structure buildings have good economic performance,which is better than that of brick concrete structure buildings and reinforced concrete structure buildings.It should be actively promoted and applied in the southwest region to meet environmental protection and sustainable development of building structure,and effectively enhance the disaster resistance and disaster reduction level of building structure in Southwest China.