Research On Supply And Demand Matching Of Construction Labor Service Based On Internet Platform

With the development of lean construction concepts,construction labor service needs to transform and upgrade to change the current situation of prominent contradiction between supply and demand,improving the resource allocation between project demand and labor,so as to improve the overall productivity of the construction industry.The development of Internet and sharing economy theory has affected the original paradigm of various industries,and its characteristics of strong information sharing have also brought new ideas to the problems of low efficiency in matching supply and demand of construction labor service.However,the cumbersomeness and diversity of construction labor service make its integration with the Internet platform more complicated.At present,the development of the construction labor service platform is not perfect,and the research on the matching of construction labor supply and demand based on the status quo is also relatively lacking.Therefore,combined with ontology technology,mixed integer model and heuristic algorithm method,this paper studies the issues of construction labor service ontology modeling and reasoning,supply and demand matching,and platform construction scheme,aiming to provide a certain theoretical basis for the construction of the construction labor service platform.1.Aiming at the problems of poor sharing and low integrity of construction labor service information,an ontology model of construction labor service was constructed to facilitate the sharing and reuse of information on the Internet platform.Based on ontology technology,combined with the status quo of construction labor services,this paper preliminarily completed the construction of the ontology model of both the supply and demand sides and the information database;And two different types of reasoning were defined based on domain knowledge and fuzzy attributes,which enriched the attribute characteristics of both the supply and demand sides and made the information more complete.2.Aiming at the problems of high communication cost and low efficiency in supply and demand matching of construction labor services,a supply and demand matching framework combining SWRL rule-based screening reasoning,mixed integer model and genetic algorithm was proposed.Based on the ontology model of supply and demand,this paper used SWRL rules to complete the preliminary screening process of supply and demand matching problem according to the direct requirements of both parties;On this basis,combined with the status quo of construction labor service,a mixed integer model of timecost multi-objective was further constructed,which was solved by genetic algorithm,obtaining the optimal construction team combination based on the least time and the least cost.Finally,the validity and practicability of the model were verified by case comparison;The mathematical model was closer to the status quo of construction labor services,and at the same time,the solution process combining ontology reasoning and genetic algorithm was efficient,making it possible to complete the rapid supply and demand matching based on the Internet platform.3.Aiming at the platformization problem in the process of transformation and upgrading of construction labor service,this paper described the user process and functional modules of the construction labor service platform on the basis of the supply and demand matching model.Combined with the input in the supply and demand matching model,this paper described the basic process of platform users,and showed the visual interface of client input;In addition,around the supply and demand matching model,the construction activity tracking module and the integrity construction module were added to strengthen the integrity of supply and demand matching information,and at the same time,it was conducive to the construction of the integrity system in the construction labor service process.This research proposes a supply and demand matching model of construction labor service based on the Internet platform,which provides certain guidance for the matching selection of both parties,which also provides a reference for scholars who study the transformation and upgrading of construction labor service.