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智利地震和中国的建筑

(2010-02-28 00:33:34)
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杂谈

   智利今天早上发生8.8级地震,震中离首都圣地亚哥并不太远。但相比海地,智利死亡人数目前100多人,而房屋的倒塌也要少得多。有的高架桥虽然歪了但并没有倒下。

   当然即使这样的损失仍是令人痛心的。但智利在过去三十年中发生了十几次地震,现在的建筑的抗震性相当好,才是此次损失较小的重要原因之一。在豆腐渣工程遍地的城市,8.8级地震可能已经造成无数的死亡和巨大的财产损失。
  
   我去做志愿者的四川德阳红白镇中心小学的教学楼在十几秒内全部倒塌,100多人死亡。我教的班是两个班合并而成的,因为两个班共死了20多学生。想想如果这些楼造得和智利的楼一样坚固,这些鲜活年轻的生命就不会成为牺牲品。而我那个临时活动房的室友班主任老师也不用每天被噩梦缠绕。

   目前中国的建筑质量问题。往往每个工程的招标和承包都是充满腐败的官员和商人,每个人都雁过拔毛,结果是只能用劣质的材料等等完成工程。一旦发生地震,这些房子倾倒的速度比谁都快,像多米诺骨牌。

   上海现在高楼林立,我的家在28楼,有的时候想想有些后怕。上海虽然不是很可能发生地震,但一旦情况出现,难道很多人就会成为豆腐渣工程的牺牲品。

   从这一点看,中国可以向默默无闻的“小国”智利学习很多东西。
http://s5/middle/642f13c7g8097e5c0e564&690

The following describes the typical effects of earthquakes of various magnitudes near the epicenter. This table should be taken with extreme caution, since intensity and thus ground effects depend not only on the magnitude, but also on the distance to the epicenter, the depth of the earthquake's focus beneath the epicenter, and geological conditions (certain terrains can amplify seismic signals).

Richter magnitudes Description Earthquake effects Frequency of occurrence
Less than 2.0 Micro Microearthquakes, not felt. About 8,000 per day
2.0-2.9 Minor Generally not felt, but recorded. About 1,000 per day
3.0-3.9 Often felt, but rarely causes damage. 49,000 per year (est.)
4.0-4.9 Light Noticeable shaking of indoor items, rattling noises. Significant damage unlikely. 6,200 per year (est.)
5.0-5.9 Moderate Can cause major damage to poorly constructed buildings over small regions. At most slight damage to well-designed buildings. 800 per year
6.0-6.9 Strong Can be destructive in areas up to about 160 kilometres (100 mi) across in populated areas. 120 per year
7.0-7.9 Major Can cause serious damage over larger areas. 18 per year
8.0-8.9 Great Can cause serious damage in areas several hundred miles across. 1 per year
9.0-9.9 Devastating in areas several thousand miles across.
1 per 20 years
10.0+ Epic Never recorded; see below for equivalent seismic energy yield.
Extremely rare (Unknown)

(Based on U.S. Geological Survey documents.)[5]




    P.S. 其实我今天很期盼电话,电话的另一端说:你是否可以今天就出发前往智利去报道那里的灾难。




   


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