路基工程
路基工程
로기공정
SUBGRADE ENGINEERING
2012年
1期
154-156,160
,共4页
公路%箱涵%试验段%地表变形%变形监测%方案改进
公路%箱涵%試驗段%地錶變形%變形鑑測%方案改進
공로%상함%시험단%지표변형%변형감측%방안개진
highway%box culvert%pilot phase%surface deformation%deformation monitoring%scheme improvement
针对某市区箱涵施工,采用现场监测的手段,跟踪监测公路箱涵施工试验段周边地表变形的发展过程。通过分析监测数据,得出施工试验段周边地表的沉降、水平位移变形,主要集中在开挖基坑、钢板桩施工、开挖至底部和拔除钢板桩四个施工阶段,且拔除钢板桩时变形最大。通过对检测数据的分析：试验段的累计地表沉降、累计水平位移和裂缝变形等几个主要控制指标,均超过设计预警值,故原设计方案需进一步改进。
針對某市區箱涵施工,採用現場鑑測的手段,跟蹤鑑測公路箱涵施工試驗段週邊地錶變形的髮展過程。通過分析鑑測數據,得齣施工試驗段週邊地錶的沉降、水平位移變形,主要集中在開挖基坑、鋼闆樁施工、開挖至底部和拔除鋼闆樁四箇施工階段,且拔除鋼闆樁時變形最大。通過對檢測數據的分析：試驗段的纍計地錶沉降、纍計水平位移和裂縫變形等幾箇主要控製指標,均超過設計預警值,故原設計方案需進一步改進。
침대모시구상함시공,채용현장감측적수단,근종감측공로상함시공시험단주변지표변형적발전과정。통과분석감측수거,득출시공시험단주변지표적침강、수평위이변형,주요집중재개알기갱、강판장시공、개알지저부화발제강판장사개시공계단,차발제강판장시변형최대。통과대검측수거적분석：시험단적루계지표침강、루계수평위이화렬봉변형등궤개주요공제지표,균초과설계예경치,고원설계방안수진일보개진。
Against road box culvert construction of a city and by means of field monitoring,the developing process of the surrounding surface deformation of the road box culvert in pilot construction phase is tracked and monitored.Through analysis of the monitoring data,we obtained that the subsidence,displacement deformation of the ground surface in pilot phase are concentrated on pit excavation,steel sheet pile construction,excavation to the bottom and removal of steel sheet pile in four construction phases,and the deformation of the period segment of remove steel sheet piles is the largest.Through analysis of testing data,the major control targets including the total surface subsidence,total horizontal displacement and cracks deformation are all larger than designed alarm value.Hence the original design requires to be improved further.
