Study Of The Cost Influence Factors Of Unit Curtain Wall Project

With the acceleration of the urbanization process in China, the city land resource arescarce, which directly contributed to the rapid development of high-rise building construction.It is at the moment that curtain wall boom in the background of the high-rise buildingconstruction upsurge. The proportion of curtain wall engineering cost in the total project costshould not be ignored. The research on the curtain wall at home and abroad are mainly aboutthe technology of curtain wall, and rarely for the cost analysis of curtain wall, especially forthe unit curtain wall cost analysis is more insufficient. Therefore this paper make a study ofthe cost influence factors of unit curtain wall project and cost control measures has certainpractical significance.Taking the pinnacle curtain wall project as an example, this article analyze the technicalfeatures on the structure composition, the processing and transportation, the installationmeasures of the curtain wall system. Found that the unit type curtain wall has some technicalfeatures such as a panel material diversity, the plate Quantity and weight, keel complex, stonehighest installation height of280m, building plane geometry with lots of retreat, hoistingmethod complex. The curtain wall project cost is composed by project fee, measures cost,design fee, four-performance test fee, general contract management fee, fees and taxes. Thecost influence factors of the unit curtain wall project are the panel material selection, keel ofthe curtain wall, form of stone curtain wall, interior sealing plate, artificial, unit plate hoistingmeasure, and the mechanical royalties, design fee and other are other comprehensive factors,the main factors and comprehensive factors together in proportion to the curtain wall projectcost respectively27.86%,27.23%,14.50%,13.21%,6.84%,3.27%,7.08%. Analyzing theeffect factors of cost control measures are the glass panel spaced, aluminum in appearanceand surface treatment methods selection, stone panel should avoid using separate; determinethe keel form should be optimized the keel of the section size and dosage, processing; stonecurtain wall structure metal pendant should choose cost-effective products; curtain wallthermal insulation and interior sealing board settings should be pay attention to heat, fire testand cost analysis; artificial should be a reasonable organization, to improve work efficiency; hoisting measures should be adopted by strengthening construction management to controlcost.Through the actual case of the qualitative and quantitative analysis, draw that the costinfluence factors of unit curtain wall project on the curtain wall project cost influence frombig to small is: curtain wall panel material selection、curtain wall keel form、stone curtain wallstructure、insulation walls and stone curtain wall interior sealing plate curtain wall set、artificial、unit plate lifting measures and so on. Thus proposed that in the design phase shouldfocus on the curtain cost control of the main factors influencing the curtain wall cost, usingthe method that taking technical and economic comparison; in construction stage, focus onvaluation mode selection, material selection and material business links in examination andapproval, agreed and reasonable project payment way, strictly control the construction processin the major of design change and visa.