不同抗震设防标准对框架结构农居工程造价的影响

Influence of different seismic fortification criteria on cost of frame structures of rural residence project

我国是个地震频发的国家,并且,这些地震大部分发生在农村地区,给农村地区造成了巨大的人员伤亡和经济损失。但由于地震发生的偶然性和人类资源的有限性,因此,确定房屋建造的合理投入已成为社会各界关注的重要问题。选取框架结构房屋作为现代我国农村地区较有代表性的农居工程,计算了框架结构农居在不同抗震设防标准下的造价,得出相对于不设防的情况,抗震烈度为6度时单方造价提高约5%,而从6度设防提高到7度设防或从7度设防提高到8度设防,单方造价增加约18%的结论。并对比分析了引起农居造价变化的主要原因。

China is a country suffered many destructive earthquakes in history. Most of these earthquakes happened in rural areas, and caused huge casualties and economic losses. However, due to the accidental characteristic of the earthquakes and the limitations of human resources, it is an important problem of the society to determine the reasonable investment of housing construction. This paper selects the frame structures as the representative of rural residential project and the research object in China＇ s rural areas. The project cost of the frame structure is calculated under different seismic fortification criterion. The results show that, unilateral cost is increased by about 5% in seismic Intensity 6 degrees relative to the undefended cases, and by approximate 18% from Intensity 6 to Intensity 7 or Intensity 7 to Intensity 8. The main reasons of the cost change are then analyzed.