湖南工业大学学报
湖南工業大學學報
호남공업대학학보
JOURNAL OF HUNAN UNIVERSITY OF TECHNOLOGY
2012年
3期
39-43
,共5页
既有人防隧道%跳槽扩挖%首破点%径向注浆%临时竖撑
既有人防隧道%跳槽擴挖%首破點%徑嚮註漿%臨時豎撐
기유인방수도%도조확알%수파점%경향주장%림시수탱
existing aerial defense tunnel%interval digging expanding%first-breaking point%vertical grouting%interim vertical support
哈尔滨地铁西大桥—教化广场区间和教化广场—铁路局区间建设为利用既有人防工程进行扩挖改建,属国内首例。针对既有隧道破除的结构安全性问题,通过对其首破及破除后结构内力变化的研究,选择适宜的首破点和破除方向,采用临时竖撑预支加固、先侧墙后仰拱、径向注浆和跳槽扩挖等施工方法和措施,使既有结构内力变化在可控范围内,有效地控制了拱顶沉降、仰拱上浮和地层位移,保障了结构安全和施工安全,确保了工程的顺利进展。
哈爾濱地鐵西大橋—教化廣場區間和教化廣場—鐵路跼區間建設為利用既有人防工程進行擴挖改建,屬國內首例。針對既有隧道破除的結構安全性問題,通過對其首破及破除後結構內力變化的研究,選擇適宜的首破點和破除方嚮,採用臨時豎撐預支加固、先側牆後仰拱、徑嚮註漿和跳槽擴挖等施工方法和措施,使既有結構內力變化在可控範圍內,有效地控製瞭拱頂沉降、仰拱上浮和地層位移,保障瞭結構安全和施工安全,確保瞭工程的順利進展。
합이빈지철서대교—교화엄장구간화교화엄장—철로국구간건설위이용기유인방공정진행확알개건,속국내수례。침대기유수도파제적결구안전성문제,통과대기수파급파제후결구내력변화적연구,선택괄의적수파점화파제방향,채용림시수탱예지가고、선측장후앙공、경향주장화도조확알등시공방법화조시,사기유결구내력변화재가공범위내,유효지공제료공정침강、앙공상부화지층위이,보장료결구안전화시공안전,학보료공정적순리진전。
Harbin Metro from West Bridge to Jiaohua Square and Jiaohua Square to the railway bureau is constructed by extending the existing civil air defense engineering.Aiming at its structural-broken security problems,the structure internal force variations for first breaking and after breaking are studied.By means of appropriately selecting the first-breaking point and breaking direction,interim vertical pre-support enforcing from sidewall to arch invert as well as vertical grouting and interval digging expanding,the structure internal force variations are within controllable range,and the vault settlement,arch invert floating and ground movement are effectively controlled.The structure and constructing security and the smooth project process are ensured.
