哪類大樓最易垮? 從統帥飯店倒塌看建築防震
2018/2/7
<p class="MsoNormal"><a name="OLE_LINK3"></a><a name="OLE_LINK2"></a><a name="OLE_LINK1"></a><span style="mso-bidi-font-size: 12.0pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial;">聯合報【張錦弘】</span></p>
<p class="MsoNormal" style="margin-top: 9.0pt; mso-para-margin-top: .5gd; text-align: justify; text-justify: inter-ideograph; line-height: 23.0pt; mso-line-height-rule: exactly; tab-stops: 6.0cm;"><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">花蓮強震造成花蓮統帥飯店等多棟大樓倒塌,很多民眾透過新聞報導,看到統帥一樓櫃台塌陷到地下、員工被救出的畫面,也跟著憂心自家建築是否耐震。</span></p>
<p class="MsoNormal" style="margin-top: 9.0pt; mso-para-margin-top: .5gd; text-align: justify; text-justify: inter-ideograph; line-height: 23.0pt; mso-line-height-rule: exactly; tab-stops: 6.0cm;"><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">學者專家分析,這次倒塌建築有幾個共同特色,除都接近斷層,也大多是</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: 微軟正黑體; mso-bidi-font-family: Helvetica;" lang="EN-US">921</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">地震前蓋的老舊大樓,耐震係數較低,也因飯店一樓等開放空間太大,梁柱單薄遇強震較易倒;另很多建築平面配置呈L形等不對稱形狀,也比圓形或方形不耐震。統帥飯店剛好都符合上述特色。</span></p>
<p class="MsoNormal" style="margin-top: 9.0pt; mso-para-margin-top: .5gd; text-align: justify; text-justify: inter-ideograph; line-height: 23.0pt; mso-line-height-rule: exactly; tab-stops: 6.0cm;"><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">規模</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: 微軟正黑體; mso-bidi-font-family: Helvetica;" lang="EN-US">7.3</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">的</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: 微軟正黑體; mso-bidi-font-family: Helvetica;" lang="EN-US">921</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">大地震,當年震垮很多房子,政府後來修改建築相關法規,新建的大樓都提高耐震係數,但</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: 微軟正黑體; mso-bidi-font-family: Helvetica;" lang="EN-US">921</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">之前蓋的樓房,例如已營運</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: 微軟正黑體; mso-bidi-font-family: Helvetica;" lang="EN-US">41</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">年的統帥飯店,耐震度就較新大樓低,若又鄰近斷層帶,就更危險,如果是學校等公共建築,政府已陸續編列預算協助補強,太危險的則遷建。</span></p>
<p class="MsoNormal" style="margin-top: 9.0pt; mso-para-margin-top: .5gd; text-align: justify; text-justify: inter-ideograph; line-height: 23.0pt; mso-line-height-rule: exactly; tab-stops: 6.0cm;"><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">但若是私人建築,則無強制規範,不過可申請防災都更,除拆除重建,也可補強,但條件是所有住戶都要</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: 微軟正黑體; mso-bidi-font-family: Helvetica;" lang="EN-US">100%</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">同意,因此很不易達成,一旦遇到強震較易受災。</span></p>
<p class="MsoNormal" style="margin-top: 9.0pt; mso-para-margin-top: .5gd; text-align: justify; text-justify: inter-ideograph; line-height: 23.0pt; mso-line-height-rule: exactly; tab-stops: 6.0cm;"><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">包括台南、花蓮強震倒塌的老舊建築,還有一個特色,就是一樓底層的開放空間很大,作為大廳櫃台或出租店面,打掉很多內部梁柱及牆面,只剩外面</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: 微軟正黑體; mso-bidi-font-family: Helvetica;" lang="EN-US">4</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">根梁柱撐著,俗稱「軟腳蝦」建築,遇強震較容易震倒,統帥飯店也屬這類建築。</span></p>
<p class="MsoNormal" style="margin-top: 9.0pt; mso-para-margin-top: .5gd; text-align: justify; text-justify: inter-ideograph; line-height: 23.0pt; mso-line-height-rule: exactly; tab-stops: 6.0cm;"><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">此外,房子耐不耐震,也和平面配置的圖形大有關係,建築專家指出,俯瞰建築最好是對稱形,例如圓形、方形,從力學的角度最耐震;若是L形,兩邊的交接點往往是最脆弱的地方,</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: 微軟正黑體; mso-bidi-font-family: Helvetica;" lang="EN-US">T</span><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: '微軟正黑體',sans-serif; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Helvetica;">形、ㄇ形也較不耐震。從空拍圖來看,統帥飯店格局類似L形,剛好也是較不耐震的平面配置,種種原因加總在一起,導致花蓮的老牌飯店被震塌。</span></p>
<p class="MsoNormal" style="margin-top: 9.0pt; mso-para-margin-top: .5gd; text-align: justify; text-justify: inter-ideograph; line-height: 23.0pt; mso-line-height-rule: exactly; tab-stops: 6.0cm;"><span style="font-size: 13.0pt; mso-bidi-font-size: 13.5pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: 微軟正黑體; mso-bidi-font-family: Helvetica;" lang="EN-US"> </span></p>