The objective of this research is to present a dynamic simulation model for in-situ production quantity estimate of precast concrete members. The cost estimation model was developed using the system dynamics methodology by considering the influence factors for in-situ production of precast concrete members. The model was then applied to a real warehouse project to compare the costs of the quantity reflecting the field condition for in-situ production with those of in-plant production under the different scenarios with the available production sites within the construction site. The results of simulation tests indicated that the cost reduction of up to 16.9% was achieved from in-plant production to in-situ production when 100% of the precast concrete members are in-situ produced. When considering the field conditions of the real warehouse project site, the cost reduction of 13.9% was achieved in the site where in-situ production of precast concrete members is applicable within a limited space due to the production and yard stock areas. The model helps save production costs of the precast concrete members for project owners because it can estimate the actual in-situ production quantity and costs by varying the in-situ production areas compared to the construction site areas.

中文翻译：

---

PC构件就地生产量估算的动力学仿真模型

本研究的目的是提出一种用于预制混凝土构件现场生产数量估计的动态模拟模型。通过考虑预制混凝土构件现场生产的影响因素，使用系统动力学方法开发了成本估算模型。然后将该模型应用于实际仓库项目，比较反映现场生产条件的数量成本与不同场景下的现场生产成本，以及施工现场可用生产场地的成本。模拟试验结果表明，当预制混凝土构件100%在现场生产时，从厂内生产到现场生产的成本降低高达16.9%。考虑到实际仓库项目现场的现场条件，在有限的空间内，由于生产和堆场库存区域，适用于预制混凝土构件的现场生产的现场实现了13.9%的成本降低。该模型有助于为项目业主节省预制混凝土构件的生产成本，因为它可以通过与施工现场区域相比改变现场生产区域来估算实际现场生产数量和成本。