盾构过建筑物桩基施工方案2177.docx
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1、盾构过建建筑物桩桩基施工工方案一 工程概况况: 广广州轨道道交通三三号线大大沥盾构构区间隧隧道,为为两条圆圆形隧道道,起止止里程YYDK88+8224.22YDDK111+2887.775,隧隧道全长长49225.335m,隧隧道净空空5.44m,衬衬砌采用用6块高高强度得得预制管管片拼装装组成,管管片宽度度为1.5m,厚厚度为00.3mm,管片片与管片片的纵,环环向由224根MM24的的螺栓连连接,管管片设计计强度为为C500,抗渗渗等级为为S122。本区区间隧道道采用两两台复合合式盾构构机分别别在左右右线隧道道进行掘掘进及管管片拼装装。 本本区间隧隧道自大大塘站始始发,穿穿过大片片农田,在
2、在建筑物物密集的的后滘村村下穿过过,横穿穿南环高高速公路路及建筑筑物密集集的新基基村到达达沥滘站站。其中中位于新新基村YYDK111+0000YDKK11+28775.775段有有16栋栋建筑物物的桩基基侵入隧隧道或邻邻近隧道道,为保保证盾构构穿越建建筑物的的安全,原原设计对对侵入隧隧道或邻邻近隧道道的建筑筑物进行行桩基托托换,盾盾构穿越越该166栋建筑筑物的平平面位置置图见下下图:11该16栋栋建筑物物与隧道道位置关关系,桩桩基托换换形式及及地质水水文情况况见下表表:建筑物与与隧道位位置关系系及地质质情况序号房屋编号号层数里程需处理的的桩数桩长(mm)侵入隧道道的桩数数地面标高高拱顶标高高桩
3、底标高高隧道埋深深(m)侵入隧道道(m)离中线距距离(m)桩基托换换形式地质情况况1A26774ZDK111+003012107.5666-14.8377-13.434422.44-1.4403左侧1.8866静压桩局局部加固固004.00m,44.07.66m,7.610.10mm, 10.1013.5m, 13.5017.00mm,1722.4m,洞身,2A27004ZDK111+003632107.7006-14.6755-13.294422.338-1.3381左侧1.87静压桩局局部加固固004.00m,44.07.66m,7.610.10mm, 10.1013.5m, 13.501
4、7.00mm,1722.4m,洞身,3A2711-24ZDK111+004232007.8332-14.5099-12.168822.334-2.3341左侧1.8644静压桩局局部加固固004.00m,44.07.66m,7.610.10mm, 10.1013.5m, 13.5017.00mm,1722.4m,洞身,4A27334YDK111+006092208.1118-14.0366-13.882222.115-0.1154左侧1.2155,右侧侧1.8829筏板+静静压桩004.00m,44.07.66m,7.610.10mm, 10.1013.5m, 13.5017.00mm,172
5、2.4m,洞身,5A27445ZDK111+006072108.1448-14.0366-12.852222.118-1.1184左侧0.7255,右侧侧0.9963筏板+静静压桩004.00m,44.07.66m,7.610.10mm, 10.1013.5m, 13.5017.00mm,1722.4m,洞身,6A27556YDK111+007262238.1444-13.6599-13.856621.880.1997左侧1.6200,右侧侧3.0059筏板+静静压桩002.77m,22.76.44m,6.48.880m, 8.88014.00mm, 14.0017.40mm,17.421.0
6、0mm,洞身身,7A27666ZDK111+0071.592108.1668-13.6599-13.132221.883-0.5527左侧0.5311,右侧侧1.9939筏板+静静压桩002.77m,22.76.44m,6.48.880m, 8.88014.00mm, 14.0017.40mm,17.421.00mm,洞身身,8A27777YDK111+008292238.1008-13.34-13.892221.4450.5552左侧3.5988,右侧侧2.8898筏板+静静压桩002.77m,22.76.44m,6.48.880m, 8.88014.00mm, 14.0017.40mm,1
7、7.421.00mm,洞身身,9A2777-25ZDK111+008282108.1332-13.34-12.868821.447-0.4472左侧0.7566,右侧侧0.9955筏板+静静压桩002.77m,22.76.44m,6.48.880m, 8.88014.00mm, 14.0017.40mm,17.421.00mm,洞身身,10A28004ZDK111+114142017.8331-11.6588-12.169919.4490.5111左侧2.60筏板+静静压桩002.77m,22.76.44m,6.48.880m, 8.88014.00mm, 114.00017.60mm,17.
8、619.00mm,洞身身,11A28995YDK111+221832636.9556-9.4486-19.044416.4449.5558左侧1.9444筏板+静静压桩001.330m,11.8007.330m,77.30013.90mm, 13.9016.90mm,洞身身16.9019.80mm,199.80021.30,21.3025.40,12A28995ZDK111+221852656.9556-9.4486-19.044416.4449.5558中线筏板+静静压桩001.330m,11.8007.330m,77.30013.90mm, 13.9016.90mm,洞身身16.9019.
9、80mm,199.80021.30,21.3025.40,13A29004ZDK111+221841607.0662-9.4486-8.993816.555-0.5548左侧1.2566筏板+静静压桩001.330m,11.8007.330m,77.30013.90mm, 13.9016.90mm,洞身身16.9019.80mm,199.80021.30,21.3025.40,14A29114YDK111+2230102167.0227-9.2222-13.979916.2254.7557中线筏板+静静压桩001.330m,11.8007.330m,77.30013.90mm, 13.9016
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