2017年云南鲁甸M_S4.9地震房屋震害特征与烈度评定

Building Damage Characteristics and Earthquake Intensity Evaluation of the Ludian M_S4.9 Earthquake in 2017

2017年2月8日,云南鲁甸发生M_S4.9地震,本次地震灾区位于2014年"8·03"鲁甸M_S6.5地震的高烈度区,属于地震恢复重建全覆盖区域,灾区房屋结构以砖混结构为主,针对于该类房屋抗震性能较好的情况,依据烈度评定相关规范,以现场入户调查为基础,重点关注房屋薄弱和结构不合理部位震害现象,结合新老房屋震害特征综合评定烈度。

On February 8, 2017, a Ms4. 9 earthquake occurred in Ludian, and the earthquake disaster area was loca- ted in the high intensity area of the ＂8 · 03＂ Ludian Ms6.5 earthquake, which belonged to the area of earth- quake restoration and reconstruction, and the main structure of this area was brick -concrete structure. For this kind of good seismic performance of buildings, the earthquake damage characteristics was not obvious. In order to evaluate the earthquake intensity and accumulate experience for this situation, we used the comprehensive e- valuation method, which based on the severity of the relevant norms and on - site household survey, focused on housing weakness and structural unreasonable parts of the earthquake damage phenomenon, and also combined with the characteristics of new and old buildings.