Research On Work Flow Reliability In Lean Construction

This dissertation aims to study work flow reliability in lean construction, identify critical factors and analyze interrelationships among these factors. Finally, we put forward evaluation model of work flow reliability to help manager manage work flow and improve reliability to decrease cost and improve quality. Firstly, this dissertation sorted out factors affecting work flow reliability by literation review. Then, we designed questionnaire to collect data. Next, we applied factor analysis to identifying critical factors of work flow reliability. After that, we applied Structure Equation Model(SEM) to analyzing interrelationships among these factors. Finally, we built evaluation model of work flow reliability. This dissertation identified 5 critical factors including labor resource, managerial level, support of each part in project, visualization of work flow, rework and weather. Then, we put forward 12 hypotheses and rejected 3 of them. According to the final model, labor's loyalty has the strongest influence on labor resource, adequate prerequisite has the strongest effect on managerial level, owner's intervention has the strongest effect on support of each part in project, transparent information and rapid transmission has the strongest effect on visualization of work flow. Besides, this dissertation found other relationship among critical factors, managerial level and support of each part in project have positive correlation. Then, this dissertation put forward evaluation model of work flow reliability to evaluate reliability quantitatively. The conclusion of this dissertation will help project manager understand work flow reliability and take effective measures to improve work flow reliability.