摘要
建筑物的振动响应不但跟建筑物的振动特性有关,而且跟输入的振动波有关。为研究两种不同的建筑物的振动响应差异,应输入近似相同振动波,测定其响应差异。针对隧道洞口爆破施工时监测相邻两种不同建筑物响应,结果发现:低矮的砌体结构和高层框架结构各自的振动频率、应力、应变不同,前者跟爆破频率较接近,容易产生共振,而且前者抗震能力差,所以其损坏程度远大于后者,并通过数值模拟分析,验证其具有同样的损坏规律,说明监测与模拟结果的合理性。此结论为隧道洞口爆破设计施工提供参考。
The vibration response of building is relevant to vibration properties of buildings and vibration waves.Therefore,it is necessary to research the vibration properties of different buildings. In order to find different vibration properties of two buildings,the monitoring at the same time was conducted to them and there was the same vibration waves broadcasting. It is found that there were different vibration frequency,stress and strain for short building and high frame structure. The former is near blasting frequency to lead to damage for resonating and more seriously destroy than the latter. And numerical simulation was conducted and the same conclusion was gotten. It is proved the two methods was effective and available. The conclusions were referred to design of blasting at the entrance of tunnels.
出处
《土木工程学报》
EI
CSCD
北大核心
2013年第S1期81-86,共6页
China Civil Engineering Journal
基金
浙江省科技厅项目(2012C21074)
浙江省住建厅项目
浙工大校基金(2011XY024)
关键词
隧道洞口
砌体结构
框架结构
共振
爆破
震害
监测
the entrance of tunnel
masonry structure
frame structure
resonate
blasting
vibration damage
monitoring
