?!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 贵州钢筋混凝土受压构件ؓ(f)什么要加固Q?- 遵义?jng)井萍؜凝土有限公?/title> <meta name="Keywords" content="贵州钢筋混凝?> <link href="/template/60032/css/style.css" rel="stylesheet" type="text/css" /> <link href="/template/60032/css/css_con.css" rel="stylesheet" type="text/css" /> <script type="text/javascript" src="/template/60032/js/jquery-1.8.2.min.js"></script> <script src="/template/60032/js/jquery.min.js"></script> <script src="/template/60032/js/jquery.flexslider-min.js"></script> <script type="text/javascript" src="/template/60032/js/script.js"></script> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head> <body> <h1><a href="http://www.mall0451.com/">欧美第四页,怡红院免费全部视频在线视频,露脸国产精品自产在线播,欧美亚洲春色系列,美国一级黄色录像,国产成人免费a在线视频色戒 ,国产一区二区三区毛片</a></h1><div 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style="font-size:16px;font-family:SimSun;"><a target="_blank" href="http://www.mall0451.com/news/56.html">贵州钢筋混凝土受压构件ؓ(f)什么要加固Q?/a></span> </p> <p> <span style="font-size:16px;font-family:SimSun;">1.混凝土柱承蝲力不的原因Q?/span> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q?设计不周或错误;</span> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q施工质量差Q?/span> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q质量事故;</span> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q施工现场管理不善;</span> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q地Z均匀下沉Q?/span> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q火灾、加荗外力等损坏?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">2.混凝土柱的加固方法:(x)</span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">增大截面法,外包钢法Q预加应力法、卸除外载法Q增加支撑法?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">3.截面承蝲力计方法u?j)受压柱Q?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">N?.9φ[fc0Ac0+ fy?As′s0+csQfcAc+ fy′AsԌ(j)]加固部分混凝土与原柱协同工作时新增加的؜凝土和纵向钢{的强度折减pL=0.8 5.增大截面加固法:(x)又称外包混凝土加固法?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">4.构造要求:(x)</span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q?周边外包Q原柱凿毛、洗净Q箍{封闭型Q间距符合设计规?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q增砼Q表面凿毛,凸凹?mmQ当D薄用短钢{(d?0mmQl?dQ中?00mm焊接新老钢{;新砼较厚Q用U形箍{固定纵{,与原q焊接10d或双?d?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q新增砼较小厚度?0mmQ喷砼?0mm?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q受力筋UҎ(gu)带肋{,dmin?4Qdmax?5mm?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q纵向受力筋锚入基础Q顶端锚固。框架柱100%I楼板,受压{?0%I楼ѝ与大梁交接必须密实?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">5.柱子的预加应力加固法Q?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">加固中用撑杆施加预顶应力Q卸原柱药Q新老砼同步作用提高。常用于应力较高Q变形大Q外药隑֍或损坏严重的柱加Z。分U向压羃法和横向收紧法?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">构造要?/span> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q撑杆角钢截面不于50×50×5mmQ缀板厚?mmQ宽?0mmQ长l比?0?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q撑杆末端传力可靠,末端截面?00×75×12mmQ传力顶板厚?6mm?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q螺栓v横向收紧作用?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q弯折压杆肢前,侧立肢上切三角Ş~口?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q拉紧螺柱d?6mmQ螺帽高?.5d?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">Q?Q焊接用上下轮流点焊法,消除受热预应力损失?/span> </p> <p style="text-align:center;"> <span style="font-size:16px;font-family:SimSun;"><img src="/uploads/image/20181123/20181123155746_7490.jpg" alt="贵州钢筋混凝? 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