Economic Benefit Evaluation Model of Urban Street Reconstruction Based on Parallel Multigrid Computing

This study draws on the relevant experience of algebraic multigrid, which effectively deals with anisotropic matrices, transforms the geometric characteristics of unstructured grids into numerical relationships, distinguishes the degree of anisotropy of geometric grids through numerical values, and forms a strong-weak coupling relationship between elements. It is used to aggregate and generate coarse grid levels, which makes up for the defect that the cell-centric calculation format cannot effectively deal with high-ductility grids. In order to reduce the computational complexity of the coarse-grid layer and adapt to the calculation requirements of different dimensions, multiple strong coupling aggregations are used for high-ductility grid cells and cell-centric aggregations are used for other grid cells. Under the RGD model, the government pays attention to the improvement of environmental quality and land fiscal revenue. Residents pay attention to the level of demolition compensation and resettlement fees and the improvement of urban landscape functions. Developers pay attention to urban renewal and renovation costs, public participation, and coordination between new and old buildings. The government pays attention to the level of demolition compensation and resettlement fees and the cost of urban renewal and transformation, residents are concerned about the improvement of cultural education and the level of rental income, and developers are concerned about the improvement of traffic conditions, land utilization, and urban landscape functions. The government pays attention to the level of demolition compensation and resettlement fees and the status of land fiscal revenue, residents pay attention to public participation, and developers pay attention to land use. The comprehensive benefit evaluation of urban renewal is multidimensional, and comprehensive evaluation is carried out from the six dimensions of the social, economic, and environmental perspectives of the government, residents, and developers that coordinate the benefits and the social, economic, and environmental aspects of the development benefits. Social and people's livelihood, economic development, environmental support, ecological balance, and historical and cultural inheritance are the core content of the evaluation system. The social and people's livelihood is the foundation, economic development is an important condition, the environment is an important factor, and history and culture are the connotations. Urban renewal is not only about economic development but more concerned about the sustainable development of the society and the environment. Due to many factors, before starting an urban renewal project, the implementation plan should be comprehensively evaluated from multiple perspectives and dimensions and the plan and investment scale should be reasonably formulated to achieve the best goal of sustainable development.