九寨沟7.0级地震甲蕃古城震害特征研究

Research on earthquake damage characteristics in the Jiabo old city induced by the Jiuzhaigou MS7.0 earthquake

摘要:

在九寨沟7.0级地震现场震害调查的基础上，研究甲蕃古城及其周边出现的崩塌和滑坡、玻璃固定窗的破损和局部倒塌、片石砌体结构房屋倒塌、房屋开裂破坏等典型震害特征，分析了鞭梢效应等，探讨了改善房屋建筑抗震性能的构造措施和Ⅷ度区的烈度评定方法及依据等，以期为房屋建筑的抗震设防、减轻震害损失以及烈度评定等提供参考。

Abstract:

Based on the data of the field investigation, we carried out researches on the damage characteristics in the Jiabo old city induced by Jiuzhaigou M_S7.0 earthquake. It is found that the typical damage characteristics mainly include rock slope and landslide, fixed glass window damage and building local collapse, rubble masonry structure collapse, and wall cracking. We analyzed the whipping effect of the formation mechanism of the destroyed buildings, and discussed the improved construction measures of anti-seismic capacity of buildings. The measures and reasons of intensity evaluation in the intensity Ⅷ are offered.to provide reference to the earthquake fortification of buildings, the reduction of damage loss, and intensity evaluation.