城市地质
城市地質
성시지질
URBAN GEOLOGY
2014年
2期
47-50
,共4页
罗立红%万广欣%牛毅%邵兴
囉立紅%萬廣訢%牛毅%邵興
라립홍%만엄흔%우의%소흥
沉降变形%一孔多标%横向油压结构%高层建筑群
沉降變形%一孔多標%橫嚮油壓結構%高層建築群
침강변형%일공다표%횡향유압결구%고층건축군
Subsidence deformation%Many monitoring groups in a hole%Horizontal oil pressure structure%High-rise building
本文选取了典型监测区,通过布设沉降监测点及分层标组,监测高层建筑单体及群体,在施工期及竣工后正常使用阶段,对地面沉降的影响。监测控制面积2km2,布设地面沉降变形观测点38个,分层标组监测层位4个,最大监测深度71m。在高层建筑群密集区埋设分层标组及监测点,监测高层建筑对地面沉降的影响,这在天津地区首次应用。本次埋设的分层标标底结构为横向油压结构,实现了一孔多标,节约占地;横向油压标底通过油压机械装置插入监测目的层,上部由硬连接引至地表监测,采用高精度电子水准仪监测,达到高精度的监测效果。
本文選取瞭典型鑑測區,通過佈設沉降鑑測點及分層標組,鑑測高層建築單體及群體,在施工期及竣工後正常使用階段,對地麵沉降的影響。鑑測控製麵積2km2,佈設地麵沉降變形觀測點38箇,分層標組鑑測層位4箇,最大鑑測深度71m。在高層建築群密集區埋設分層標組及鑑測點,鑑測高層建築對地麵沉降的影響,這在天津地區首次應用。本次埋設的分層標標底結構為橫嚮油壓結構,實現瞭一孔多標,節約佔地;橫嚮油壓標底通過油壓機械裝置插入鑑測目的層,上部由硬連接引至地錶鑑測,採用高精度電子水準儀鑑測,達到高精度的鑑測效果。
본문선취료전형감측구,통과포설침강감측점급분층표조,감측고층건축단체급군체,재시공기급준공후정상사용계단,대지면침강적영향。감측공제면적2km2,포설지면침강변형관측점38개,분층표조감측층위4개,최대감측심도71m。재고층건축군밀집구매설분층표조급감측점,감측고층건축대지면침강적영향,저재천진지구수차응용。본차매설적분층표표저결구위횡향유압결구,실현료일공다표,절약점지;횡향유압표저통과유압궤계장치삽입감측목적층,상부유경련접인지지표감측,채용고정도전자수준의감측,체도고정도적감측효과。
In recent years, business districts continue to emerge, but the inlfuence of the high-rise building construction on surrounding soil layer are not paid high attention. The paper selects a typical monitoring area, through the arrangement of subsidence monitoring points and stratification monitoring group, and monitor the inlfuence of a single or group of high-rise buildings on land subsidence. The monitoring area is of 2km2 in area with 38 ground subsidence deformation observation points, 4 layers of stratification monitoring group, and the largest monitoring depth is up to 71 meters. In high-rise buildings concentrated area, the stratification monitoring group and monitoring points are embedded to monitor the high-rise building’s inlfuence on the ground settlement. In Tianjin, this monitoring method is the ifrst application. The stratiifcation monitoring group base is designed to be horizontal oil pressure structure, which has got the advantage of installing many monitoring groups in a hole, and saving land; this design technique achieves high precision monitoring effect.