Research On Location Decision Of Construction PC Component Factory Considering Multi-Type Products

The construction industry has been regarded as a pillar of the national economy since ancient times,but the traditional construction industry has long suffered from huge energy consumption,high pollution emissions and poor working environment,which not only violates the guidelines of China’s sustainable development strategy,but also makes it extremely vulnerable to dangerous accidents.In order to save energy,reduce pollution,save labor and improve labor conditions,China is vigorously promoting the development of assembled buildings.In order to develop assembled buildings,the first thing is to develop and build PC component plants,PC is the abbreviation of precast concrete,which is called PC components in assembled buildings.However,PC components have larger volume and weight,different shapes,and higher transportation costs,so the location of PC component plants is crucial.In this paper,we review the literature and analyze the current status of research on the siting problem,and conclude that most of the current problems concerning the siting of manufacturing enterprises are focused on the siting decision of enterprises producing the same type of products,ignoring the differences in the siting decision of enterprises producing the same type of products and those producing multiple types of products.The location decision from the perspective of multiple types of products can increase the flexibility of enterprises in production and operation after they are put into operation,and thus reduce the market risk of enterprises.In particular,it is a meaningful topic to consider the study of the location decision problem of plants producing multiple types of products for enterprises such as construction manufacturers and ship builders,where different product types can have a large impact on costs due to long transportation distances.This paper firstly presents the research problem through literature research,combined with the research background and research significance;then the relevant concepts and theories mentioned in this paper are theoretically studied to provide the theoretical basis for the later paper;next,a multi-objective decision-based site selection model is constructed to analyze the site selection decision of enterprises producing multiple types of products;firstly,the site selection evaluation system of PC component plants producing multiple types of products is constructed based on the use of questionnaire survey method,and the results are incorporated into the next stage of analysis as a reference to provide a realistic basis for the site selection decision;then the minimum initial investment cost,the minimum transportation cost and the minimum waste emission are used as the objective functions.The results are integrated into the next analysis stage as a reference to provide a realistic basis for the site selection decision;then,with the minimum initial investment cost,the minimum transportation cost and the minimum amount of waste emission as the objective function,the multi-objective site selection decision model for enterprises producing multi-type products is constructed with the initial investment cost,transportation cost and waste emission as constraints to obtain a multi-objective optimization model for the site selection decision of enterprises producing multi-type products The model is then computed using an improved genetic particle swarm hybrid algorithm to obtain the Pareto solution set,and finally an empirical analysis is conducted to verify the validity of the model by combining it with the site selection of a PC component plant in Shenyang,and finally a site selection opinion is proposed.