鼎程小編告訴您橋梁頂推施工時梁體偏移該如何實施四川橋梁糾偏移位來處理,下麵就跟小編一起來看看吧:
橋梁頂推施工時,梁體在縱向移動過程中會出現左右方向的橫向偏移,一旦橫向偏移過大,就會造成偏離頂推線路、梁體失穩或因局部受力過大引起受損、huayikunnanhuochuxiankazhudengxianxiang,shenzhizailiangtidingtuidaoweihouchuxianliangzhongxinxianyuxianluzhongxinxianjiandepianchachaobiaoerdaozhijialiangbuhegedeqingkuang。weilekongzhizhuliangzaidingtuiguochengzhongdezhongxianshizhongchuyuguidingfanweinei,daoxiangjiupianzhuangzhideshedingshifeichangzhongyaode。dingchengluqiaoxiaobianjianyininzaidingtuiguochengzhongdesichuanqiaoliangjiupianyiweifangfakeyicankaoxiamiandefangfa:
(1)確que保bao同tong步bu頂ding推tui。楚chu天tian聯lian發fa每mei次ci頂ding推tui前qian,應ying仔zai細xi檢jian查zha中zhong央yang控kong製zhi係xi統tong和he各ge墩dun位wei處chu頂ding推tui設she備bei的de性xing能neng,頂ding推tui過guo程cheng中zhong通tong過guo頂ding推tui位wei移yi和he頂ding推tui力li進jin行xing雙shuang控kong,以yi頂ding推tui位wei移yi控kong製zhi為wei主zhu,確que保bao鋼gang箱xiang梁liang左zuo、右側前行位移量協調統一。
(2)頂推過程中軸線偏位預警值為5cm,當偏位達到該值時停止頂推,進行糾偏。
(3)實施限位措施。在鋼箱梁頂推時通過各種導向裝置限位,防止鋼梁橫向偏移。頂推設備中設置了4個橫向調節油缸,可以對梁段位置進行橫向調節,隨時糾正頂推過程中出現的偏差。
(4)頂(ding)推(tui)時(shi)實(shi)施(shi)動(dong)態(tai)監(jian)測(ce)措(cuo)施(shi)。在(zai)鋼(gang)箱(xiang)梁(liang)前(qian)端(duan)和(he)尾(wei)端(duan)頂(ding)麵(mian)設(she)中(zhong)線(xian)偏(pian)移(yi)監(jian)測(ce)點(dian),頂(ding)推(tui)過(guo)程(cheng)中(zhong)連(lian)續(xu)觀(guan)測(ce)。鋼(gang)箱(xiang)梁(liang)吊(diao)至(zhi)拚(pin)裝(zhuang)平(ping)台(tai)後(hou),在(zai)鋼(gang)箱(xiang)梁(liang)底(di)麵(mian)縱(zong)板(ban)處(chu)用(yong)紅(hong)油(you)漆(qi)筆(bi)標(biao)出(chu)裏(li)程(cheng)標(biao)線(xian),標(biao)線(xian)刻(ke)度(du)為(wei)1cm,同(tong)時(shi)在(zai)臨(lin)時(shi)墩(dun)墊(dian)梁(liang)內(nei)側(ce)對(dui)應(ying)縱(zong)腹(fu)板(ban)的(de)位(wei)置(zhi)處(chu)進(jin)行(xing)標(biao)記(ji),這(zhe)樣(yang)頂(ding)推(tui)過(guo)程(cheng)中(zhong)位(wei)於(yu)臨(lin)時(shi)墩(dun)工(gong)作(zuo)平(ping)台(tai)上(shang)的(de)操(cao)作(zuo)人(ren)員(yuan)能(neng)直(zhi)觀(guan)地(di)觀(guan)察(cha)兩(liang)側(ce)進(jin)尺(chi)是(shi)否(fou)同(tong)步(bu)、gangxiangliangshifoupianwei,dangfaxianzhongxianpianweishi,jishijiupian。zaigangxiangliangdeduanbuzhongxindedingbanhedibanshangyonghongyouqibihuachuduanmianzhongxinxian,zaigangxiangliangdingtuiguochengzhong,yongshezhiyudimianshangdejingweiyiduizhongxianjinxingguancha,dangfaxianzhongxianpianwei時,及時糾偏
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