非凡棋牌

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加劲肋的构造和计算

标签:加劲,构造,计算 发布时间:2018年05月03日 点击213次

JIAJINGLEIANQIZUOYONGKEFENWEILIANGZHONG:YIZHONGSHIWEILEBAFUBANFENGECHENGJIGEQUGE,YIJINBUFUBANDEJUBUWENGUXINGLIAONINGRENSHIKAOSHIWANGZHAN,CHENGWEIJIANGEJIAJINGLEI;LINGYILEICHULESHANGSHUDEZUOYONGWAI,HAIYOUCHUANDIGUDINGJIZHONGHEZAIHUOZHIZUOFANLIDEZUOYONG,CHENGWEIZHICHENGJIAJINGLEI。

非凡棋牌JIAJINGLEIYIZAIFUBANLIANGCECHENGDUIPEIZHI,YEXUKEDANCEPEIZHI,DANZHICHENGJIAJINGLEIHEZHONGJIGONGZUOZHIDIAOCHELIANGDEJIAJINGLEIBUYINGDANCEPEIZHI。

非凡棋牌JIAJINGLEIKEYICAIYONGGANGBANHUOXINGGANG。

横向加劲肋的最小间距为0.5h0 ,最大间距为2 h0(对无局部压应力的梁,当h/ tw≤100 时,可采用2.5h0 )。

非凡棋牌JIAJINGLEIYINGYOUCHONGZUDEGANGDU,SHIQICHENGWEIFUBANDEBUDONGZHICHENG。

ZAIFUBANLIANGCECHENGDUIPEIZHIDEGANGBANHENGXIANGJIAJINGLEI,QIJIEMIANCHICUNYINGANXIALIEGONGSHIQUEDING:

WAISHENKUANDU 

HOUDU 

非凡棋牌ZAIFUBANDEYICEPEIZHIDEGANGBANHENGXIANGJIAJINGLEIZHONGQING,QIWAISHENKUANDUYINGDAYUANSHANGSHUGONGSHISUANDEDE1.2BEI,HOUDUYINGBUXIAOYUQIWAISHENKUANDUDE1/15。

在同时用横向加劲肋和纵向加劲肋增强的腹板中,横向加劲肋的截面尺寸除应吻合上述规定外,其截面惯性矩 Iz应知足下式的要求:

纵向加劲肋的截面惯性矩 Iy应知足下式的要求:

DANG  SHI 

非凡棋牌DANG SHI 

SHANGMIANSUOYONGDEzZHOUHEyZHOU,DANGJIAJINGLEIZAILIANGCECHENGDUIPEIZHISHI,QUFUBANDEZHOUXIAN(XIATUb、d、e);DANGJIAJINGLEIZAIFUBANDEYICEPEIZHISHI,QUYUJIAJINGLEIXIANGLIANDEFUBANBIANYUANXIAN(XIATUc、f、g)。

 

短向加劲肋最小间距为0.75 h1非凡棋牌,钢板短向加劲肋的外伸宽度应取横向加劲肋外伸宽度的0.7~1.0倍,厚度不应小于短加劲肋外伸宽度的1/15。

YONGXINGGANGZUOCHENGDEJIAJINGLEI,QIJIEMIANGUANXINGJUBUDEXIAOYUXIANGYINGGANGBANJIAJINGLEIDEGUANXINGJU。

HENGXIANGJIAJINGLEIYUSHANGXIAYIYUANHANLAONENGZENGZHANGLIANGDEKANGNIUGANGDU,DANHUIJIANGDIWEIMIQIANGDU。DIAOCHELIANGHENGXIANGJIAJINGLEIDESHANGDUANYINGYUSHANGYIYUANBAOPINGDINGJIN(DANGWEIHANJIEDIAOCHELIANGSHI,BINGYINGHANLAO)。ZHONGXINHENGXIANGJIAJINGLEIDEXIADUANBUYINGYUSHOULAYIYUANHANLAO,YIYANGPINGCHANGZAIJUSHOULAYIYUAN50~100mmCHUDUANKAI,(XIATUa)。WEILEJINBULIANGDEKANGNIUGANGDU,YEKELINGJIADUANJIAOGANGYUJIAJINGLEIXIADUANHANLAO,DANDIJINYUSHOULAYIYUANERBUHAN(XIATUb)。

为了避免焊缝的集中和交叉以及减小焊接应力,焊接梁的横向加劲肋于翼缘连接处,应做成切角,当切成斜角时,其宽度约为bs/3(但不大于40mm),高约为bs/2(但不大于60mm)(下图 b),bs为加劲肋的宽度。

ZHICHENGJIAJINGLEICHUZHIZUSHANGSHUGANGDUYAOQIUWAI,HAIYINGANSUOCHENGSHOUDEZHIZUOFANLIHUOJIZHONGHEZAIJISUANQIWENGUXING、DUANMIANCHENGYAQIANGDUHEHANFENGQIANGDU。

ZHICHENGJIAJINGLEIDEJISUAN

1)WENGUXINGJISUAN

ZAIZHIZUOFANLIHUOJIZHONGHEZAIZUOYONGXIA,ZHICHENGJIAJINGLEILIANTONGQIFUJINFUBANKENENGZAIFUBANPINGMIANWAISHIWEN。WEILEBAOZHENGQIWENGUXINGWANGLUO,YINGZUOWEIZHOUXINSHOUYAGOUJIANANXIASHIJISUAN:

式中: 非凡棋牌——支承加劲肋所承受的支座反力或集中荷载;

A ——加劲肋和加劲肋每侧 ( tw为腹板厚度)范围内腹板的面积;

非凡棋牌——ZHOUXINSHOUYAWENGUXISHU,YOU CHABIAO。DUI(a)JIEMIANXINGSHIWEIbLEIJIEMIAN,

DUI(b)JIEMIANXINGSHI,DUIYUDUICHENGZHOUDEZHOUXINSHOUYAWENGUJISUANSHIWEIcLEIJIEMIAN。

计算长度 l0可取为腹板计算高度 h0 , iz为绕z-z轴的回转半径。

2)DUANMIANCHENGYAYINGLIJISUAN

非凡棋牌DANGZHICHENGJIAJINGLEIDUANBUBAOPINGDINGJINYULIANGYIYUANHUOZHUDINGSHI,QIDUANMIANCHENGYAYINGLIANXIASHIJISUAN:

非凡棋牌SHIZHONG :  ——DUANMIANCHENGYAMIANJI,JIZHICHENGJIAJINGLEIYUYIYUANBANHUOZHUDINGJIECHUMIANDEMIANJI;

 ——GANGCAIDEDUANMIANCHENGYA(BAOPINGDINGJIN)QIANGDUSHEJIZHI。

TUDUANJIAJINGLEI(RUSHANGTUb)DESHENCHUZHANGDUBUDEDAYUQIHOUDUDEERBEI。

非凡棋牌RUDUANBUWEIHANJIESHI,YINGJISUANQIHANFENGYINGLI。

ZHICHENGJIAJINGLEIYUFUBANDELIANJIEHANFENG,YINGANCHENGSHOUXISHUZHIZUOFANLIHUOJIZHONGHEZAIJI

非凡棋牌JISUANSHIKEJIADINGYINGLIYANHANFENGQUANZHANGJUNYUNFENBU。