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【房屋质量】摩天大楼如何在狂风中屹立不倒?

随着经济社会的飞速发展,一座座摩天大楼在城市中心拔地而起。那么,当狂风来袭,它们能否经受住风力的袭击,安全平稳渡过难关?其实,摩天大楼有自己独特的设计,用来保证在狂风中屹立不倒。下面就让秒速赛车来一同了解一下。

秒速赛车YEXUZAIHENDUORENXINMUZHONG,GANGJINHUNNINGTUDOUSHIHAOWUDANXINGHUOSHENSUOXINGKEYANDE,QISHIBURAN。RENHEGANGYINGDEWUTI,QISHIDOUSHIYOUYIDINGDANXINGDE,BAOKUOJIANZAOMOTIANDALOUDEHUNNINGTU。ERQIEZAIDAFENGLAILINSHI,RUGUODALOUDEDINGBUBUNENGHUANGDONG,GEZHONGJIEGOUXINGBUJIANKENENGHUIYINWEIJUDAFENGLIERSHOUSUN,SUOYIJIANZHUGONGCHENGSHIHUIYOUYISHIDALOUNENGGOUBAIDONG,ZHEIYANGDALOUCAIBUHUIXIANGJUEDUIWENDINGSHISHOUDAONEIMEDADEYALI。DADUOSHUMOTIANDALOUKEYIQINGYIDIZAIRENHEFANGXIANGHUANGDONGSHUSHILIMI,JIUXIANGFENGZHONGYAOBAIDEDASHUYIYANG,ERBUHUIPOHUAIQIJIEGOUWANZHENGXING。

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“TONGTI”JIEGOUSHIYITU(ZUOZHEGONGTU)

MOTIANDALOUDEFANGFENGCUOSHISHIFENBIYAO,KEYICAIYONG“TONGTI”JIEGOU,YEJIUSHIGUANCHUANDASHAZHONGXINJIANZAOTEBIEJIANGUDEHUNNINGTUHEXINZHOU。TONGTIJIUXIANGFANGDADEYANCONG,YOUZHEHENYOUYUEDEKANGFENGNENGLI。MOTIANDALOUZHONGYOUXUDUODIANTIJING,ZAIZHONGYANGDIANTIJINGZHOUWEICAIYONGJIANGUDEGANGJIAJINXINGJIAGU,BINGYONGDUIJIAOHENGLIANGCHENGLAO,JIUCHENGLEHENHAODEKANGFENGTONGTI。CHAOGUO50CENGDEMOTIANDALOU,YIBANJIUYAOCAIYONGTONGTIJIEGOU;DANGJIANZHUGAODA70~80CENGSHENZHI100CENGSHI,YIGETONGTIJIUBUGOULE,YAOZUOLIANGGETONG,YIGEZAIZHONGJIANDE“HEXINTONG”,YIGETAOZAIWAIMIAN,ZHEIZHONGFANGSHICHENGWEI“TONGZHONGTONG”JIEGOU。RUGUOBUYONGTONGTAOTONGDEBANFA,YEKEYIBAXUDUOTONGLIANHEQILAI,JIUXIANGYIKUNZHUGAN,CHENGWEI“CHENGSHUTONG”,ZHUMINGDEXIERSIDASHAJIUCAIYONGLEZHEIZHONGJIEGOU,JUYOUJIHAODEKANGFENGNENGLI。

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“筒中筒”“成束筒”结构示意图(作者供图)

虽然“筒体”有助于保护摩天大楼的结构,但是这样的晃动对居住者来说仍然十分明显,所以一些摩天大楼会在楼顶安装巨型的调谐质量阻尼器,用来抵消水平运动,减弱震动力量。一种是油液压系统通过来回推动在某个顶层放置的400吨混凝土构件,不停地移动整座大厦的重心。先进的计算机系统会仔细监视风力使大厦产生的晃动,并相应移动大厦的重心,纽约花旗中心大厦就采用了这种方法;另外一些类似系统则依靠巨大摆锤的运动来改变大厦的重心,就像“不倒翁”一样。这种调谐质量阻尼器同样由钢铁或混凝土制成,重量大约在300吨到800吨之间,一般会占据约92.9平方米的空间,要用钢索吊住。它像一个巨型的吸能装置,使遭到狂风的大楼复位。

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DIAOXIEZHILIANGZUNIQISHIYITU(ZUOZHEGONGTU)

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秒速赛车“BUDAOWENG”DIAOXIEZHILIANGZUNIQISHIYITU(ZUOZHEGONGTU)

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