安徽建筑工业学院学报（自然科学版）
安徽建築工業學院學報（自然科學版）
안휘건축공업학원학보（자연과학판）
JOURNAL OF ANHUI INSTITUTE OF ARCHITECTURE（NATURAL SCIENCE）
2014年
4期
54-59
,共6页
深基坑%偏压%施工方案%高速公路%监测
深基坑%偏壓%施工方案%高速公路%鑑測
심기갱%편압%시공방안%고속공로%감측
deep foundation pit%unsymmetrical load%construction scheme%expressway%field monito-ring
合肥地铁1号线某基坑紧邻既有高速公路高填方路基，处于偏压状态，施工期间必须保证基坑和路基稳定。以此为背景，详细介绍了深基坑具体设计方案和施工步骤，并制定了监测方案对基坑进行了现场监测，此外针对涉路交通方案也做了补充说明。监测结果表明：路基一侧围护桩桩体水平位移大于另一侧，围护结构上部出现了向低荷载一侧的整体“漂移”；无论是桩体水平位移还是路基沉降，沿基坑长度方向中部位置均大于两端，是基坑最薄弱区域；虽然高速公路一侧桩体变形和路基沉降值稍大，但相对值较低，施工期间基坑及高速公路安全稳定，未发生一起安全事故。可见，该基坑施工方案切实可行，可为今后类似工程提供参考。
閤肥地鐵1號線某基坑緊鄰既有高速公路高填方路基，處于偏壓狀態，施工期間必鬚保證基坑和路基穩定。以此為揹景，詳細介紹瞭深基坑具體設計方案和施工步驟，併製定瞭鑑測方案對基坑進行瞭現場鑑測，此外針對涉路交通方案也做瞭補充說明。鑑測結果錶明：路基一側圍護樁樁體水平位移大于另一側，圍護結構上部齣現瞭嚮低荷載一側的整體“漂移”；無論是樁體水平位移還是路基沉降，沿基坑長度方嚮中部位置均大于兩耑，是基坑最薄弱區域；雖然高速公路一側樁體變形和路基沉降值稍大，但相對值較低，施工期間基坑及高速公路安全穩定，未髮生一起安全事故。可見，該基坑施工方案切實可行，可為今後類似工程提供參攷。
합비지철1호선모기갱긴린기유고속공로고전방로기，처우편압상태，시공기간필수보증기갱화로기은정。이차위배경，상세개소료심기갱구체설계방안화시공보취，병제정료감측방안대기갱진행료현장감측，차외침대섭로교통방안야주료보충설명。감측결과표명：로기일측위호장장체수평위이대우령일측，위호결구상부출현료향저하재일측적정체“표이”；무론시장체수평위이환시로기침강，연기갱장도방향중부위치균대우량단，시기갱최박약구역；수연고속공로일측장체변형화로기침강치초대，단상대치교저，시공기간기갱급고속공로안전은정，미발생일기안전사고。가견，해기갱시공방안절실가행，가위금후유사공정제공삼고。
One foundation pit in Hefei Metro No .1 line is closed to existed expressway ,influenced by unsymmetrical load of high-fill subgrade .Based on it ,this paper introduced the design scheme and construction process in detail ,and the field monitoring of deep foundation pit was carried out in ac-cordance with monitoring scheme ,at last ,the traffic scheme related to the expressway was introduced additionally .The field monitoring results indicate that the horizontal displacement of supporting piles on the side of expressway is bigger than the other side ,the upper parts of retaining structure appears to a "drift"towards the lower load side ;no matter the displacement of piles or the settlement of sub-grade ,the value of central position is bigger than the left and right sides along the length of deep foundation pit ,which is the weakest zone of the whole deep foundation pit ;although the absolute val-ue of horizontal displacement and settlement seems to be a big number ,the relative value is small compared with the length of supporting pile and expressway .The deep foundation pit and expressway kept safe and stable in all the periods of construction , no one accident occurred during that time . Thus ,it can be seen that this construction scheme is feasible and effective ,which can provide a refer-ence for design and construction to similar projects in the future .
