现代交通技术
現代交通技術
현대교통기술
XIANDAI JIAOTONG JISHU
2012年
3期
50-53
,共4页
连续箱梁桥%支座更换%同步顶升%顶升双控技术
連續箱樑橋%支座更換%同步頂升%頂升雙控技術
련속상량교%지좌경환%동보정승%정승쌍공기술
continuous box girder bridge%bearing replacement%synchronous jacking%dual control technology for jacking
结合淮安市天津路大运河桥主墩支座更换工程实践，提出了单主墩左、右幅粱体同时同步顶升及顶升力和位移“双控”技术，并通过现场监控，控制最大顶升量和左右幅顶升高差，顺利实现了大吨位支座更换。
結閤淮安市天津路大運河橋主墩支座更換工程實踐，提齣瞭單主墩左、右幅粱體同時同步頂升及頂升力和位移“雙控”技術，併通過現場鑑控，控製最大頂升量和左右幅頂升高差，順利實現瞭大噸位支座更換。
결합회안시천진로대운하교주돈지좌경환공정실천，제출료단주돈좌、우폭량체동시동보정승급정승력화위이“쌍공”기술，병통과현장감공，공제최대정승량화좌우폭정승고차，순리실현료대둔위지좌경환。
Combining with engineering practice of bearing replacement of Grand Canal bridge main pier in Tianjin road Huai＇an city,this paper suggestes that synchronous jacking technology should be used for the beam bodies in the left and right side of a main pier at the same time,jacking force and jacking displacement should be controlled simultaneously as well. The maximum amount of jacking and height difference of jacking are controlled by field monitoring. Through the technology, large tonnage bearings are replaced successfully.
