發(fā)布時(shí)間：2018-06-10 11:39

  本文選題：汾河階地 + 預(yù)應(yīng)力錨桿　； 參考：《建筑結(jié)構(gòu)》2016年S1期

【摘要】：介紹了護(hù)坡樁+預(yù)應(yīng)力錨桿支護(hù)體系及三軸水泥土攪拌樁在山西太原汾河階地敏感地層中的應(yīng)用。通過(guò)提高單根錨桿極限承載力減少錨桿道數(shù),進(jìn)而減小錨桿成孔造成的地層損失;采用液壓雙動(dòng)力雙套管施工工藝,有效保護(hù)孔壁,降低孔壁受沖刷的程度進(jìn)而減小地層附加沉降;同時(shí)采取多重堵漏措施,確保高水位環(huán)境下帷幕體系的有效性;通過(guò)監(jiān)測(cè)及時(shí)指導(dǎo)施工,動(dòng)態(tài)調(diào)整施工參數(shù),使敏感建筑物變形始終位于安全變形范圍之內(nèi)。結(jié)果證明此種基坑支護(hù)技術(shù)在靈敏地層中應(yīng)用的可行性和有效性。
[Abstract]:The application of slope protection pile and prestressed anchor bolt supporting system and three axis cement soil mixing pile in the sensitive stratum of Fenhe terrace in Taiyuan, Shanxi, is introduced. By improving the ultimate bearing capacity of the single anchor bolt to reduce the number of bolts, and then reducing the formation loss caused by the bolt hole formation, the hydraulic double power double casing construction technology is adopted to effectively protect the hole wall and reduce the hole wall. The hole wall is affected by the degree of erosion and then reduces the additional settlement of the formation. At the same time, multiple plugging measures are adopted to ensure the effectiveness of the curtain system under high water level, and the construction parameters are dynamically adjusted by monitoring the construction in time and the deformation of the sensitive building is always within the safe deformation range. The feasibility and effectiveness of the application in the formation.
【作者單位】： 太原市建筑安全監(jiān)督管理站;
【分類號(hào)】：TU753
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本文編號(hào)：2003088