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抗震设防烈度为6度抗震等级是多少？

抗震设防烈度为6度抗震等级是多少？

浏览：109次 | 提问时间： 07-03 04:09

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5个答案

い孤獨 07-03 04:09

1、抗震等级
抗震等级是设计部门依据国家有关规定，按“建筑物重要性分类与设防标准”，根据烈度、结构类型和房屋高度等，而采用不同抗震等级进行的具体设计。以钢筋混凝土框架结构为例，抗震等级划分为四级，以表示其很严重、严重、较严重及一般的四个级别。在中国建筑业中，已经开始严格执行这个等级标准。
2、设防烈度
设防烈度是按国家规定的权限批准作为一个地区抗震设防依据的地震烈度。
确定了抗震设防烈度就确定了设计基本地震加速度和设计特征周期、设计地震动参数。
在确定地震作用标准值时，用到设计基本地震加速度值，《抗震规范》3.2.2指出了加速度和设防烈度的对应关系。
通俗的讲就是建筑物需要抵抗地震波对建筑物的破坏程度，要区别于地震震级。
设防烈度取值的标准：是基本烈度，就是一个地区在今后50年期限内，在一般场地条件下超越概率为10%的地震烈度。其具体的取值根据抗震规范中的抗震设防区划来取值。比如说北京地区的抗震设防烈度为8度。
3、抗震等级和设防烈度的关系
所有抗震等级一般由设计单位根据建筑物或者构筑物的特点考虑的抗震等级，不是说抗震设防烈度是多少，抗震等级一定是多少。

宁愿 07-03 04:18

抗震设防烈度和抗震等级地球上的地震有强有弱，同样大小的地震，造成的破坏不一定相同；同一次地震，在不同的地方造成的破坏也不一样。烈度与震级就是用来衡量地震强弱的两把“尺子”。这两把 “尺子”，人们往往容易弄混，不光国内外的某些报刊有时也会把他们弄错，就连我们这些工程技术人员也经常把他们弄错。震级是衡量地震本身大小的一把“尺子”，地震烈度是衡量地震影响和破坏程度的另一把“尺子”。震级反映地震本身的大小，只与地震释放的能量多少有关；而烈度则反映的是地震的后果，一次地震后不同地点烈度不同。一次地震只有一个震级，但它所造成的破坏，在不同的地区是不同的。也就是说，一次地震，可以划分出好几个烈度不同的地区。打个比方，震级好比一盏灯泡的瓦数，烈度好比某一点受光亮照射的程度，它不仅与灯泡的功率有关，而且与距离的远近有关。一般而言，震中地区烈度最高，随着震中距加大，烈度逐渐减小。例如，1976年唐山地震，震级为7.8级，震中烈度为十一度；受唐山地震的影响，天津市地震烈度为八度，北京市烈度为六度，再远到石家庄、太原等就只有四至五度了。震级和震中烈度的经验关系： M

等多时 07-03 04:26

0.58I+1.5或I

愛人是他 07-03 04:34

1.3*M (M——为震级； I——为烈度。)

black葬心 07-03 04:43

您好，抗震设防烈度，是某行政区划区域的设防标准。是根据该区域历年爆发地震的频率和强度，结合地质构成，以及震害带给当地国民经济的影响程度等，国家规定设立的防御尺度。全国的设防烈度划分为6度、7度、8度、9度。
“几级抗震”不是专用名词，其意思是指‘抗震等级’。
抗震等级是根据房屋所处地区的设防烈度、房屋的结构型式、房屋的建造高度来对结构划分不同抗震等级，确定在设计建造时应该分别采取不同的基本抗震构造措施。抗震等级分为一级、二级、三级、四级。
设防烈度与抗震等级概念不同，不能互画等号。
希望能帮到您，望采纳

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