瑞士木结构建筑：求索于传统与创新之间

近几十年在瑞士和国际上木结构建筑的复兴令人瞩目。借助飞速发展的技术和不断提高的生态观念,传统的木材逐渐成为潜力巨大的可持续性发展建材。一方面,在越发注重节能意识和成本效益的瑞士城区,木结构建筑日益彰显其重要性。另一方面,在木构中,传统技艺的经验累积与工业化数字化的新兴高效技术相得益彰,以激动人心的方式结合在一起。本文借由实例讨论木结构建筑在瑞士的新近发展及展望。

现代建筑产业推广评价体系指标及权重确立

分析了现代建筑产业化建造方式中的成本因素对现代建筑产业技术推广的影响,在综合考虑现代建筑产业化生产方式中成本因素的基础上,将现代建筑产业化建造方式与传统建造方式进行对比,建立评价模型,确定评价模型中的各个评价指标,并运用层次分析法计算评价指标的权重。通过此方法的计算,能客观的反应出现代建筑产业化生产方式与传统建造方式的不同之处,直观的反应出现代建筑产业推广评价模型中的各个评价指标的影响程度,为现代建筑产业的推广判断提供一定的依据。

A Dynamic Modeling For Cyclic Total Reflux Batch Distillation

Cyclic total reflux(CTR) batch distillation is a promising mode of the process but lacking of appropriate modeling for the period of filling the reflux drum.A new dynamic modeling method for the simulation of CTR batch distillation is proposed in this work,in which the changes in column holdup and liquid flow rate during the filling of the drum,and the consequent change in valid number of theoretical plates are considered.The effect of drum holdup on operation time is investigated and the optimal drum holdup is obtained from the simulation.The dynamic modeling is compared to the conventional modeling without consideration of change in liquid flow rate. The experimental result shows that the present modeling is more reliable and more accurate,especially for the column with large liquid holdup.