Research On Project Progress Management Of Dongfanghongjun Community Based On Key Chain Technology

Recently,with the rapid growth of China’s economy and the continuous development of the globalization process,China’s construction industry enterprises have developed rapidly,and the number and scale of engineering projects are also increasing.However,most construction enterprises in China still use traditional progress management models such as Gantt Chart and Critical Path Method for project progress management.Although a complete set of progress management processes have been developed,during the actual operation of the project,due to resource constraints,human factors,and other reasons,there are issues such as safety time redundancy,resource bottlenecks,and project delays in the project.In this situation,how to find scientific methods to control the progress of engineering projects is an important research topic,and in-depth research on it has positive significance.This article takes the Dongfang Hongjun community project as an example to analyze the current status of project schedule management in Dongfang Hongjun community.Through research and interviews,it is found that there are issues such as excessive construction period estimation,continuous modification of schedule plans,and insufficient supervision by managers.To address this issue,a critical chain technology model is proposed to optimize the progress management process of the Dongfang Hongjun community project.This article constructs a project progress management model based on key chain technology from three aspects: key chain identification,buffer setting,and buffer monitoring.Key chain identification includes using trapezoidal fuzzy number theory to re evaluate the project duration,recalculating the project duration with a completion rate of 50%,and setting the eliminated safety time margin as a safety buffer reserve.For resource conflicts between processes,Allocate resources according to the ACTIV criteria in the order of allocation between processes,identify and identify key chains;The size of the buffer zone is set using the difference between the 95% completion rate and the 50% completion rate as the safety time for the process.At the same time,four uncertainty factors,namely resource tension,process complexity,risk coefficient,and impact factor,are introduced based on the actual situation of the project to correct the size of the buffer zone,making the setting of the buffer zone more reasonable and scientific,and reducing the risk of project delay;Buffer monitoring uses buffer configuration weights to allocate buffer zones,thereby knowing the size of the buffer allocated for each process.Based on the buffer consumption ratio and project completion ratio,buffer zone monitoring is carried out,and corresponding measures are taken according to the actual situation.Then,progress assurance measures are implemented from three aspects to ensure the effectiveness of progress management.Through the application of the model in practical cases,it is concluded that the construction period has been compressed by 72 days,reflecting that the key chain technology management model is more scientific and reasonable,and more in line with the actual situation.The application of the critical chain technology management model in the progress management of residential projects has a wide range of application prospects.By using this technology model,the dependency relationship between various processes is analyzed,resources are reasonably allocated,risk factors of the project are identified,scientific buffer zones are set up,and scientific methods are used to monitor the buffer zones,improving the efficiency of plan execution and ensuring the smooth progress of the progress plan.Practice has proven that the technical management model has solved the problems of original schedule management,achieved significant results in guiding actual project construction,improved the quality and efficiency of the project,and can provide reference and reference for other engineering projects.