大型ハーフPC板の生産計画に関する研究 : 大型ハーフPC合成床板工法に関する研究

抄録

Nowadays, large scale construction are increasing, but skilled laborers are in short supply and construction periods are shortened. Therefore, the development of advanced and reasonable technologies for construction work are urgent theme. The authors have developed a new slab system and applied it to buildings on the premise that the system of formed slabs and computer aided engineering are the key technology for the solution of laber intensive construction work. The new system has a CAE sub-system as a useful tool for calculation, graphics and drafting to design the optimum conditions for manufacturing schedule and the crew balance chart for multi-layer casting of precast concrete panels in site. This paper describes the logic of the software for making an optimum construction plan for the new system of formed slabs and effects of application on site. The main conclusions are as follows. 1) The CAE sub-system calculates that the number of beds, days and workers required are 3, 64 and 256, but the number of those are 4, 56 and 299 respectively in actual work. 2) Form the results of field investigation, the decremental constant of application work are 85〜90%, and the learning theory shows that the decremental constant of the work using the new system will develop to be 88%. 3) The human-error for manufacturing precast concrete panels decreases as the number of repetitional work increases.