竹材组合结构全生命周期成本分析

Life Cycle Cost Analysis of Bamboo Composite Structure

竹材组合结构是将冷弯薄壁型钢和竹胶板利用结构胶黏剂组合而成的一种新型结构形式,工程应用中具有组合效应突出、材料轻质环保、抗震性能优越、施工速度快、综合效益好等优良特点。笔者基于现阶段竹材组合结构的设计方法,综合考虑建造阶段、使用阶段和拆除处置阶段,对竹材组合结构样板房全生命周期成本进行计算,并将其与钢筋混凝土结构进行对比,分析该结构形式的经济性。由分析结果得出以下结论:竹材组合结构建造阶段的成本支出主要集中在材料费用支出,竹胶板、型钢和胶黏剂的费用支出分别占49.8%、34.0%和16.2%;使用阶段的成本为钢筋混凝土结构的67.0%,而处置阶段成本仅为钢筋混凝土结构的4%左右,并且在其整个生命周期成本中可忽略不计。在设计使用年限内,竹材组合结构全生命周期成本约为混凝土结构的75.7%,具有长远的经济效益。

Bamboo composite structure is a new type that combines cold-formed thin-walled steel and bamboo plywood using structural adhesives,which has excellent characteristics such as outstanding combination effect,light weight and environmental protection,superior seismic performance,quick construction and good comprehensive efficiency.Based on the design method of steel-bamboo composite structure at present,this paper calculated the full life-cycle cost of the bamboo composite structure with the construction phase,the usage phase,and the disposal phase into consideration.Then it was compared with the reinforced concrete structure,and the economics of bamboo composite structure was analyzed.Following conclusions were drawn:The construction cost of bamboo composite structure is mainly material cost,among which,the expenses for the bamboo plywood,steel and adhesive are 49.8%,34.0%and 16.2%,respectively.The usage cost of composites structure is 67.0%of the reinforced concrete structure and the disposal phase cost of bamboo composite structure is only about 4%of the reinforced concrete structure and is negligible in its life cycle cost.Within the design working life,the full life cycle cost of bamboo composite structure is approximately 75.7%of the concrete structure,which means long-term economic benefits.