?!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> title_temp Ԣ结构强度螺栓Є预拉力 - 新闻中弨 - 徐州市四方特种屋?/title> <meta name="keywords" content="钢结构高强度螺栓的预拉力" /> <meta name="description" content=""> <meta http-equiv="Cache-Control" content="no-transform" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head> <body><h1><a href="http://anneddwen.com/">߿</a></h1> <div class="header"> <div class="top"> <span>徐州ƛ方特种屋盖限公司</span> <p class="slogan"> 徐州地区˸Є网架公司!</p> <ul class="menu" id="navi"> <li><a href="http://anneddwen.com/">??/a></li> <li><a href="/gywmn/gywm/" rel="nofollow">关于我们</a></li> <li><a href="/xwzx/xwzxn/">新闻中弨</a></li> <!-- <li><a href="/cpjs/wjjg/">产品介绍</a></li>--> <li><a href="/crcm/crcmn/">ա容ա貌</a></li> <li><a href="/scgy/scgyn/">生产工ѹ</a></li> <li><a href="/gcal/gcaln/" rel="nofollow">工程案例</a></li> <li><a href="/lyb/lyb/" rel="nofollow">切?/a></li> <li><a href="/lxwm/lxwmn/" rel="nofollow">쳻我们</a></li> </ul> <div class="qc"> </div> </div> </div> <div class="banner"> <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" width="1000" height="270"> <param name="movie" value="/img/top.swf" /> <param name="quality" value="high" /> <param name="wmode" value="transparent" /> <embed src="/img/top.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="1000" height="270"></embed> </object> </div> <div class="nymain"> <div class="nymain_sider"> <div class="lmdh"> <h3 class="lmdh_bt"> 新闻中弨</h3> <ul class="lmdh_nr"> <li><a href="/xwzx/xwzxn/">新闻中弨</a></li> </ul> <p class="lmdh_foot"> </p> </div> <div class="lmdh"> <h3 class="lmdh_bt"> 网架资讯</h3> <ul class="lmdh_nr1"> <li><a href="/xwzx/xwzxn/302.html" target="_blank" title="影响Ԣ结构网架成的Ơ素">影响Ԣ结构网架成的Ơ素</a></li> <li><a href="/xwzx/xwzxn/12.html" target="_blank" title="印度合作伙伴Կ">印度合作伙伴Կ</a></li> <li><a href="/xwzx/xwzxn/78.html" target="_blank" title="网架Ԣ结构应ɛ腐蚀裂纹Є形成ǿ预防">网架Ԣ结构应ɛ腐蚀裂纹Є形成ǿ预防</a></li> <li><a href="/xwzx/xwzxn/329.html" target="_blank" title="不Ԣ网架钢结构ֲ火保护之防火措?>不Ԣ网架钢结构ֲ火保护之防火措?/a></li> <li><a href="/xwzx/xwzxn/41.html" target="_blank" title="徐州ƛ方网架浅谈Ԣ结构发展四个׮?>徐州ƛ方网架浅谈Ԣ结构发展四个׮?/a></li> <li><a href="/xwzx/xwzxn/252.html" target="_blank" title="轻钢网架主要씨于哪些场?>轻钢网架主要씨于哪些场?/a></li> <li><a href="/xwzx/xwzxn/344.html" target="_blank" title="Ԣ网架结构自ɨ焊接与Ɋ琢接工ѹ比輩">Ԣ网架结构自ɨ焊接与Ɋ琢接工ѹ比輩</a></li> <li><a href="/xwzx/xwzxn/318.html" target="_blank" title="Ԣ结构构件的连接方">Ԣ结构构件的连接方</a></li> </ul> <p class="lmdh_foot"> </p> </div> <div class="lxwm" style="margin-top: 13px;"> <p class="lxwm_bt"> <a href="/lxwm/lxwmn/" rel="nofollow">쳻我们</a></p> <p class="lxwm_nr"> 董事长ϸ翟广?br /> ?ϸ13805216518(微信?<br /> 经理ϸ翟茂?br /> ?ϸ13815310072(微信?<br / ?话ϸ+86-0516-87769958<br /> ?真ϸ+86-0516-87769968<br /> ?箱ϸsys777@163.com<br /> <span style="padding-left: 51px;">xzsfwj@126.com</span><br /> QQ?05773936<br /> ?址벾州徺М山区张?br /> 轻工벛<br /> </div> </div> <div class="nymain_con"> <div class="slist_title"> <h3 class="main_bt"> 新闻中弨</h3> <span class="positions">现在的᫽是ϸ<a href="http://anneddwen.com/">??/a> >  <a href="/xwzx/xwzxn/">新闻中弨</a></span> </div> <div class="nymain_contant"> <h2 class="nybts2"> Ԣ结构强度螺栓Є预拉力</h2> <h4 class="fbrqs2"> ߶间?015-07-22 作者ϸ徐州市四方特种屋盖有限公? </h4> <p>뼺度螺ݓ的غ、螺母和垫圈都要用抗拉强度Є钢材来制作。强螺ݓ的能等级?0.9级ֽ20MnTiBԢ和30VB刷?.8级ֽ40BԢ?5Ԣ和35ԢV两种?/p> <p>45Ԣ或40BԢ只能用于直径不大于24mmЄ强螺ݓ。目前工程中已逐渐采用20MnTiB作为뼺度螺ݓ的专用Ԣ?/p> <p>뼺度螺ݓ氛ƴ擦性连接和ؿ压型连接两种?/p> <p>뼺度螺ݓ擦型连接依靠连接构件间的摩擦ɛ传͒外ɛ,安装߶,要将螺栓拧紧,使螺杆产生预拉ɛ压紧构件接触,靠接触Ǣ间Є擦力组织其相互滑移,来达到传͒外ɛ的目的。当剪力与擦力相等߶,即为连接Є载力极限Ӷ怲强度螺栓摩擦型连接与普뵞ݓ连接的重要不同ɤ就是完全不考螺杆的抗剪与孔壁的ؿ压来传ɛ,Կ是依靠Ԣ板间接触Є擦力来传ɛ?/p> <p>뼺度螺ݓաɞ连接Є传ɛ特征是셶剪力超摩擦ɛ时,构件间⺧生相对滑移,螺杆与孔壁接触,使螺杆嵯剪,孔壁受压,破坏形式与普뵞˸ݷ,以螺آ剪坏或孔壁ա破坏为其载力Є极限状䲢աɞ连接ؿ载ɛ于擦型连接,但뽢较大〱于直接受动ɛ荷载的结构?/p> <p>뼺度螺ݓ的构造和排列要求,通普뵞ݓ的构造ǿ排列要求一ݷ?/p> <p>1、强度螺栓Є预拉力</p> <p>뼺度螺ݓ的预拉ɛ是뵱ح紧螺母来实现,一般采用扭矩法、转角法或扭剪法?/p> <p>①扭矩法是采用可直接显示ح緳Є特制扳؋,由实现测定的ح緳和螺ݓ拉ɛ之间的关系施加ح緳,使其达到预定的预拉ɛ?/p> <p>②转角法是先用人工扳Ɉ拧螺᫛拧不动᫽、再终拧,即以初拧时拧紧Є位置为起点,按螺栓直和板叠厚度所确定Є终拧角度,动或人工制旋拧螺母到预定角度,即达到预定Є预拉力?/p> <p>③扭剪法采用ح剪型强度螺栓,如ɛ؀示,该螺ݓ端部设梅花头,在拧紧螺母߶,Ǡ拧断螺母梅花头切口处截Ǣ来控制其预拉力?/p> <p style="text-align: center;"><img src="/UpdateFile/test/image/luoshuan.png" width="459" height="160" alt="" /></p> <p>文先介绍到这里,下次跟大家说说뼺度螺̢拉力计算߶应Կ哪些方?谢谢大家浏览?/p> <ul class="sxp"> <li><a href="/xwzx/xwzxn/321.html">¦? 网架Ԣ结构支ؿ布置与构?/a></li> <li><a href="/xwzx/xwzxn/323.html">下一? 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