闽南地区农村石结构房屋的爆破振动损伤特点

Damage Characteristics of Rural Houses Due to Blasting Vibration in Southern Fujian

在对台地平整爆破作业造成周边村落民房损伤的实地踏勘基础上,对闽南农村石结构房屋在爆破地震影响下的损伤特征进行描述,并对损伤程度进行分级.基于爆破地震效应和当地石结构的砌筑特点,分析造成震害的主要原因.损伤等级分布统计分析表明,闽南地区石结构房屋抗震能力差是造成爆破震害的主要因素.最后,提出减轻爆破地震对闽南石结构房屋影响,以及增强闽南农村房屋防灾能力的建议.

The damage characteristics of rural houses, especially stone masonry houses in Southern Fujian under blasting vibration are described in detail based on the field investigation on the damage of the rural houses due to the site blasting operations, and the statistics analysis of the damage degree to different blasting distance and different structural type of rural houses is conducted. It is indicated that the vulnerability of stone masonry house to blasting vibration is the main reason of severe damage. Some recommendations to mitigate the blasting vibration damage and to enhance the disaster prevention ability to rural houses are proposed.