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<h2 class="rich_media_title" id="activity-name" style="margin: 0px 0px 5px; padding: 0px;"><span style="font-size:small;font-weight: normal;">钢结构房屋采用框架-支撑结构有哪些要求?</span></h2><h2 class="rich_media_title" id="activity-name" style="margin: 0px 0px 5px; padding: 0px;"><p class="rich_media_content " id="js_content" style="margin: 0px; padding: 0px; overflow: hidden; position: relative; min-height: 350px;"><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-weight: normal;"><span style="font-size:small;"> 1、支撑框架在两个方向的布置均宜基本对称,支撑框架之间楼盖的长宽比不宜大于3.</span></span></p><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-weight: normal;"><span style="font-size:small;"> 2、三、四级且高度不大于50m的钢结构宜采用中心支撑,也可采用偏心支撑、屈曲约束支撑等消能支撑。</span></span></p><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-weight: normal;"><span style="font-size:small;"> 3、中心支撑框架宜采用交叉支撑,也可采用人字支撑或单斜杆支撑,不宜采用K形支撑;支撑的轴线应交<span style="white-space:pre"> </span>汇于梁柱构件轴线的交点,偏离交点时的偏心距不应超过支撑杆件宽度,并应计入由此产生的附加弯矩。当中心支撑采用只能受拉的单斜杆体系时,应同时设置不同倾斜方向的两组斜杆,且每组中不同方向单斜杆的截面面积在水平方向的投影面积之差不应大于10%。</span></span></p><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-weight: normal;"><span style="font-size:small;"> 4、偏心支撑框架的每根支撑应至少有一端与框架梁连接,并在支撑与梁交点和柱之间或同一跨内另一支撑与梁交点之间形成消能梁段。</span></span></p><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-weight: normal;"><span style="font-size:small;"> 5、采用屈曲约束支撑时,宜采用人字支撑、成对布置的单斜杆支撑等形式,不应采用K形或X形,支撑与柱的夹角宜在35°~55°之间。屈曲约束支撑受压时,其设计参数、性能检验和作为二种消能部件的计算方法可按相关要求设计。</span></span></p><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-weight: normal;"><span style="font-size:small;"><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;" /></span></span></p><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-weight: normal;"><span style="font-size:small;">钢结构抗震计算的阻尼比选取是多少?</span></span></p><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-weight: normal;"><span style="font-size:small;"> 1、多遇地震下的计算,高度不大于50m时可取0.04;高度大于50m且小于200m时,可取0.03;高度不小于200m时,宜取0.02.</span></span></p><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-weight: normal;"><span style="font-size:small;"> 2、当偏心支撑框架部分承担的地震倾覆力矩大于结构总地震倾覆力矩的50%时,其阻尼比可比本条1款相应增加0.005.</span></span></p><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-weight: normal;"><span style="font-size:small;"> 3、在罕遇地震下的弹塑性分析,阻尼比可取0.05.</span></span></p><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="font-size:small;font-weight: normal;"><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;" /></span></p><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-weight: normal;"><span style="font-size:small;">单层厂房砌体墙的厚度多少合适?</span></span></p><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-weight: normal;"><span style="font-size:small;"> 砌体墙在单层工业厂房中,除跨度小于15m,吊车吨位小于5t时,作为承重和围护结构之用外,一般只起围护作用。</span></span></p><p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; word-wrap: break-word !important;"><span st