貴州橋梁維修加固gongsiweininjieshaoqiaoliangdingtuishigongshixiang，qiaoliangdingtuishigongshi，liangtizaizongxiangyidongguochengzhonghuichuxiankongzhimubiaodehengxiangpianyi，yidanhengxiangpianyiguoda，jiuhuixingchengpianlidingtuixianlu、梁體失穩或因片麵受力過大形成受損
、滑移麻煩或出現卡住等現象，甚而在梁體頂推到位後出現梁中心線與線路中心線間的誤差超標而形成架梁分歧格的狀況。

為(wei)了(le)管(guan)製(zhi)主(zhu)梁(liang)在(zai)頂(ding)推(tui)過(guo)程(cheng)中(zhong)的(de)中(zhong)線(xian)永(yong)遠(yuan)處(chu)於(yu)章(zhang)程(cheng)界(jie)線(xian)內(nei)，導(dao)向(xiang)糾(jiu)偏(pian)裝(zhuang)置(zhi)的(de)設(she)定(ding)對(dui)錯(cuo)常(chang)重(zhong)要(yao)的(de)。提(ti)議(yi)您(nin)在(zai)頂(ding)推(tui)過(guo)程(cheng)中(zhong)的(de)糾(jiu)偏(pian)方(fang)式(shi)不(bu)妨(fang)參(can)考(kao)底(di)下(xia)的(de)方(fang)式(shi)。

(1)頂推過程中軸線偏位預警值為5cm，當偏位抵達該值時停止頂推，進行糾偏。

(2)quebaotongbudingtui。meicidingtuiqian
，yingzaixijianyanzhongxinguanzhitixihegedunweichudingtuishebeidegongneng，dingtuiguochengzhongjingguodingtuiweiyihedingtuilijinxingshuangkong，yidingtuiweiyiguanzhiweizhu，quebaogangxiangliangzuo、右邊前行位移量協和統一。

(3)頂(ding)推(tui)時(shi)實(shi)踐(jian)動(dong)態(tai)監(jian)測(ce)對(dui)策(ce)。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)看(kan)。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)，如(ru)此(ci)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)縱(zong)職(zhi)員(yuan)能(neng)直(zhi)觀(guan)地(di)觀(guan)看(kan)兩(liang)旁(pang)進(jin)尺(chi)是(shi)否(fou)同(tong)步(bu)、鋼gang箱xiang梁liang是shi否fou偏pian位wei
，當dang發fa現xian中zhong線xian偏pian位wei時shi，趕gan緊jin糾jiu偏pian。在zai鋼gang箱xiang梁liang的de端duan部bu中zhong心xin的de頂ding板ban和he底di板ban上shang用yong紅hong油you漆qi筆bi畫hua出chu斷duan麵mian中zhong心xin線xian

，在zai鋼gang箱xiang梁liang頂ding推tui過guo程cheng中zhong，用yong配pei置zhi於yu地di麵mian上shang的de經jing緯wei儀yi對dui中zhong線xian進jin行xing觀guan看kan
，當dang發fa現xian中zhong線xian偏pian位wei時shi
，趕gan緊jin糾jiu偏pian。

(4)實踐限位對策。在鋼箱梁頂推時經過各種導向裝置限位

，預防鋼梁橫向偏移。頂推設備中配置了4個橫向調整油缸，不妨對梁段位置進行橫向調整，隨時改正頂推過程中出現的誤差。