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【对症下药】浅析框架柱加固方案的适用范围

发布日期:2019-12-22 作者: 点击:

KUANGJIAJIEGOUPINGJIEQIBUZHILINGHUO、SHIYONGXINGQIANGDEYOUDIAN,ERZAIXIANDAIJIANZHUZHONGYOUZHEJIAOPUBIANDEYINGYONG。JINNIANLAI,DIZHENDEPINFA,YANZHONGDEWEIXIEDAORENMENSHENGMINGCAICHANANQUAN,ZHISHIRENMENYISHIDAOJIANZHUWUKANGZHENJIAGUDEZHONGYAOXING,DUIYUFEICHANGCHANGJIANDEKUANGJIAJIEGOULAISHUOYOUWEIRUCI。


今天为大家整理的针对框架柱的加固方法,先分析结构柱的不同地震破坏形式,然后总结不同加固方法的适用范围。


789游戏中心WOMENDOUZHIDAO,KUANGJIAJIEGOUZHONG,QIANGTIBUCHENGZHONG,ZHIQIDAOWEIHUYUGELIDEZUOYONG,ZHUSHICHENGZHONGDEZHUYAOGOUJIAN,CHENGDANZHEZHENGGEJIEGOUDESHUXIANGHEZAIYUSHUIPINGLIYINQIDEFUJIAHEZAI。KUANGJIAZHUYIDANFASHENGPOHUAI,HOUGUOWANGWANGBUKANSHEXIANG,YINCIZAIKANGZHENJIAGUZHONG,GENGYINGZHONGSHIKUANGJIAZHUDEKANGZHENJIAGU。DIZHENZHONGKUANGJIAZHUDEPOHUAIXINGSHIZHUYAOYOUYIXIAJIZHONG:


弯曲破坏


789游戏中心WANQUPOHUAISHIDIZHENZHONGKUANGJIAZHUCHANGJIANDEPOHUAIXINGSHI,ZHUYAOFASHENGZAIZHUJIANKUABIJIAODA、ZHOUYABIJIAOXIAOQIEPEIJINHELIDEQINGKUANGXIA。ZHEIZHONGQINGKUANGSHOUWANCHENGZAILIQIKONGZHIZUOYONG。


ZHUYAOPOHUAIXINGTAIWEI:ZHUDINGHUOZHUDISUXINGJIAOQUSHUIPINGWANQUANLIEFENGMIBU,ZONGJINQUFU,ZUIZHONGPOHUAISHIHUNNINGTUMINGXIANYASUI、BOLUO。ZHENGGEGUOCHENGXISHOUJIAODADEDIZHENNENGLIANG,SHUYUYANXINGPOHUAI。


微信图片_20191213134136.jpg


剪切破坏


剪切破坏是框架柱抗震设计中要避免的破坏方式,主要发生在剪跨比较小、轴压比较大、混凝土强度或箍筋约束不足的情况。这种情况受剪承载力起控制作用,破坏时箍筋屈服,纵筋始终未屈服,达到抗剪承载力后柱承担的水平力随变形增大迅速降低。


主要破坏形态为:混凝土出现明显剪切滑移斜裂缝后迅速发生脆性剪切破坏。根据破坏形式具体又可分为剪切受压破坏、剪切受拉破坏、剪切斜拉破坏。

微信图片_20191213134141.jpg


弯剪破坏


789游戏中心WANJIANPOHUAIJIEYUWANQUPOHUAIHEJIANQIEPOHUAIZHIJIAN。YOUYUDUOZHONGKEGUANTIAOJIANDEXIANZHI,SHIJISHEJIZHONGBUNENGWANQUANBIMIANJIANQIEPOHUAIDEFASHENG,SUOYISHEJIZHONGYINGYANGEKONGZHIJIEGOUDEBIANXINGNENGLI。WANJIANPOHUAIDETEZHENGSHI:SUIZHEBIANXINGZENGDA,ZHUZONGJINSHOUXIANQUFU,ZHUDUANCHUXIANSUXINGJIAO,YOUYUJIANQIEXIELIEFENGDEFAZHANSHIHUNNINGTUYOUXIAOKANGJIANMIANJIJIANXIAO,GULIAOYAOHELIJIANGDI,ZHUJINGLIYIDUANSUXINGBIANXINGHOUSHOUJIANCHENGZAILISUIBIANXINGDEZENGDAERJIANXIAO。SUIZHEBIANXINGDEJIXUZENGDA,SUXINGJIAOQUGUJINQUFU,ZHUFASHENGJIANQIEPOHUAI,CISHISHOUYABIANYUANHUNNINGTUWEIDADAOJIXIANYAYINGBIAN。


789游戏中心POHUAIGUOCHENGZHUYAOBAOKUOZONGJINQUFU,HUNNINGTUBAOHUCENGBOLUO,GANGJINWAILU,GUJINQUFU,ZONGJINYAQU。WANJIANPOHUAIQIAN,GOUJIANCHENGXIANBIJIAOWENDINGDEWANQUXIANGYING,BIAOXIANCHUYIDINGDEYANXINGHEHAONENGNENGLI。


微信图片_20191213134146.jpg

789游戏中心LINGWAI,ZAOQIJIANCHENGDEHENDUOGANGJINHUNNINGTUZHUDEZONGJINWEIGUANTONG,SHEYOUDAJIE。ZAIDIZHENZUOYONGXIA,DANGDAJIEZHANGDUBUZU,QIEGUJINTIGONGDEYOUXIAOYUESHUBUZUSHI,DAJIEBUWEIRONGYIFASHENGZHANJIEPOHUAI,YINGXIANGZHUDEKANGZHENXINGNENG。


789游戏中心RUOXIANGTIGAOKUANGJIAZHUDEKANGZHENXINGNENG,HAIXUYAOCONGYISHANGJIZHONGPOHUAIJILIRUSHOU,TIGAOZHUDECHENGZAINENGLIYUBIANXINGNENGLI。MUQIANYINGYONGJIAOWEIGUANGFANDESHIZENGDAJIEMIANJIAGUFA、WAIZHANXINGGANGJIAGUFAHETANXIANWEIJIAGUFA。


增大截面加固法


增大截面加固法是一种适用范围很广的加固方法,对于原有框架柱尺寸偏小或者轴压比明显偏高的构件能够起到明显的抗震加固效果。这种方法的缺点也较为明显,对原有构件的增大会导致建筑空间变小,同时影响其他构件的受力性能。


外粘型钢加固法


外粘型钢加固法利用结构胶将型钢构架与混凝土粘接在一起,共同受力789游戏中心外粘型钢能显著改善结构性能,对使用空间影响相对较小,但对于外露的钢构件额外的防火、防腐要求较高。


碳纤维加固


碳纤维加固法能够有效提高框架柱的轴心受压承载力、斜截面承载力与位移延性789游戏中心利用碳纤维布对框架柱进行加固,对原结构扰动最小,基本不增加重量同时不影响结构的外形,具有轻质高强、施工简便、抗震性能提高明显的优点。


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