26 percent of Taipei city prone to liquefaction / 北市公布土壤液化潛勢 26%中高潛勢區          

The Taipei City government published a database showing the potential of soil liquefaction in different areas in Taipei. Around 26.1% of the land in Taipei is marked having medium or high vulnerability to soil liquefection. However, the city government said that's no reason for concern since soil liquefaction does not result in immediate risks. With the published information, residnets can have a better understanding of their living environment. For older buildings in need of reinforcement, residents can apply for city government's subsidy of up to NT$300,000. In Feb. the Weiguan apartment building in Tainan collapsed in an earthquake, and the incident raised public awareness about soil liquefaction risks in Taiwan. The Taipei City government released an online database showing areas that are prone to soil liquefaction in Taipei. Based on soil samples collected from 3,060 drill holes in public construction sites and residential areas and using a scale of 1:5000, the map shows that around 26.1% of the land in Taipei is categorized as highly susceptible to soil liquefaction. ==CHARLES LIN Taipei City Deputy Mayor== 26.1% of the land in Taipei is marked as medium or high susceptibility areas. Over 50% or 60% of the land has a low probability for soil liquefaction. People can type in their address to see the measurement of their area on the map. However, there is no need to panic, even if they live in a highly prone area, since soil liquefation will not cause any immediate harm. Residents can also apply for a city government subsidy if their building needs reinforcement or improvement. ==PENG CHENG-SHEN, Commissioner, Taipei Public Works Department== If the initial evaluation is ok, it means the structure of your building is safe. Its main structure will not break in case of tilting or subsidence. According to the database, the Taipei 101 building is located in a high-potential liquefaction area. Areas along the MRT Wen Hu Line between the Technology Building and Linguang Stations are marked as having medium to high suscetibility, but the Taipei Public Works Department stressed that public construction projects are all designed to withstand earthquakes and are free of safety concerns. The Taipei Dome, which is still under construction, has a low ptential for soil liquefaction. TRANSLATED BY:CHRISTINA LIU 台北市昨天公布最新版的「土壤液化」潛勢圖,全台北市,有大約百分之26.1的土地,位在中高潛勢區裡。但有結構技師呼籲,民眾不用過度擔心。市府也說明,如果民眾對住屋有疑慮的話,可以申請老屋健檢,最高補助30萬元。 台北市政府今天公布全台北市土壤液化潛勢圖,包括台北101,市政府,甚至市長柯文哲的住所,都在高度液化潛勢區,而大巨蛋和故宮等位在中度和低度液化潛勢區。 ==台北市副市長 林欽榮== 土壤液化不是絕症 而是要對症下藥 北市府此次以公共工程和私有建案的鑽孔資料,篩選出3060孔進行交叉分析,呈現精確度5000分之1的圖資,比年初中央地調所公布的2.5萬分之1的圖資,更加精確,而北市中高度潛勢區約有26.1%,低度液化區1.5%、無液化區3.5%,精度不足區則為14.5%,民眾有疑慮可申請老屋健檢,市府最高補助30萬。 ==工務局長 彭振聲== (房屋)做初評然後你做細評 然後你做詳評的話 我想這個沒有什麼值得憂慮的 結構技師表示,土壤液化多半發生在地下20公尺,建物會下陷和傾斜,但非直接倒塌,換言之,只要挖到地下室3到4層樓高的大樓,土壤液化的風險就愈小。 ==結構技師 戴雲發 == 大樓我挖地下室到地下三樓 或地下四樓 甚至也都有連續壁 很深的是往下延伸到超過20公尺 大部分這種大樓的液化問題 大多數都可以解決 由於北市仍有14%區域尚未取得土壤資料,或資料不齊全,包括社子島和關渡平原等,市府將投入1.5億經費,在4年內補齊地質精確度。 記者 李曉儒 蔣龍祥 台北報導

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