基于价值工程的塔式起重机技术经济性研究

随着建筑装配率的进一步提高,现场施工对吊装作业提出了更高的要求,起重机的技术经济性研究显得尤为迫切。以塔式起重机的吊装过程为研究对象,通过起重机布置范围计算、吊运过程分解等步骤,建立了塔式起重机选型及定位的计算模型,并以吊装时间最短为优化目标,求解了不同类型塔式起重机的最优定位点,并基于价值工程原理计算了不同类型塔式起重机的价值工程指数,对比了其技术经济性,为塔式起重机的选型提供决策支持。

Technical and Economic analysis of Tower Crane Based on Value Engineering Theory

With the increasing of prefabricated rate，the on-site construction has make higher requirements for hoisting operation， thus the systematical analysis of technical and economic aspects of cranes is particularly urgent. Taking the hoisting process of tower crane as the research objective, a calculation model for the selection and location of tower crane is established by calculating the lifting range of the crane and decomposing the hoisting processes. With the shortest lifting time as the optimization objective，the optimal locating points of different types of tower crane are solved. In order to consider cost and function simultaneously，this paper introduced value engineering indexes to calculate the value engineering indexes of different tower cranes. Therefore，the technical and economic performances are compared to provide decision support for the selection of tower cranes.