建筑工程项目环境风险传导与扩散机理研究

发布时间：2018-01-11 18:43

本文关键词：建筑工程项目环境风险传导与扩散机理研究　出处：《华中科技大学》2013年硕士论文　论文类型：学位论文

【摘要】：环境风险是建筑工程项目风险的重要来源。信息获取不完全、有限理性等是项目环境风险的根源。建筑工程项目环境风险具有不确定性、隐蔽性、突发性、变异性、复杂性等特点。外部环境风险包括自然环境、经济环境、政治与政策环境、社会与文化环境等风险因素。诸风险源所蕴含的风险能量随项目建设过程不断积累，但因系统固有自组织、自适应、自调节能力，此时风险仍处于稳态均衡。当工程项目累积的风险能量超出其风险容量，通过外界因素的诱发，便会形成突发性的环境风险。在经济领域，超过风险容量的环境风险，会以风险流的形态在风险传导节点间，通过风险传导载体沿流程链、价值链、产业链等传导链在项目内外部动态转移。流动、传导的风险与外部环境发生耦合作用，转化为经济利益链条上复杂的风险。在生态系统和社会领域，最后失控的项目环境风险还可能通过放大效应、自然规律，以链式扩散、循环扩散、辐射扩散、混合扩散等四种方式，在风险扩散参与单元间扩散，使局部的建筑工程项目环境风险形成全局性的重大工程项目环境风险事件，造成严重经济损失、人员伤亡与生态危害。以外部环境为风险源向项目的扩散和以项目内部为风险源向环境的扩散呈现各自的特点和规律。因此，识别项目环境风险源，研究建筑工程项目环境风险的形成、转化、传导与扩散机理，对实现项目与自然、项目与人、项目与社会的协调与发展，，具有重要意义。
[Abstract]:Environmental risk is an important source of construction project risk. Incomplete information acquisition and limited rationality are the source of environmental risk. Environmental risk of construction project is uncertain, hidden and sudden. External environmental risks include natural environment, economic environment, political and policy environment. Risk factors such as social and cultural environment. The risk energy contained in the various risk sources accumulates with the construction process of the project, but the inherent self-organization, self-adaptation and self-adjustment ability of the system. At this time the risk is still in a steady equilibrium. When the accumulated risk energy of the project exceeds its risk capacity, through the external factors, it will form a sudden environmental risk in the economic field. The environmental risk in excess of the risk capacity will be in the form of risk flow between the risk transmission nodes, through the risk transmission carrier along the process chain, value chain, industrial chain and other conduction chains in the project internal and external dynamic transfer. Flow. The transmitted risk is coupled with the external environment, which is transformed into the complex risk in the chain of economic benefits. In the ecosystem and social field, the final runaway environmental risk of the project may also pass the amplification effect, natural law. Chain diffusion, cyclic diffusion, radiation diffusion and mixed diffusion are four ways to participate in inter-unit diffusion. The environmental risk events of major engineering projects, which make the environmental risks of local construction projects become global, cause serious economic losses. Human casualties and ecological hazards. Taking the external environment as the risk source of the diffusion to the project and the internal of the project as the risk source of diffusion to the environment presents their own characteristics and laws. Therefore, identify the project environmental risk sources. It is of great significance to study the mechanism of formation, transformation, conduction and diffusion of environmental risks in construction projects for realizing the coordination and development between projects and nature, between projects and people, and between projects and society.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU71

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