探矿工程-岩土钻掘工程
探礦工程-巖土鑽掘工程
탐광공정-암토찬굴공정
EXPLORATION ENGINEERING (DRILLING & TUNNELING)
2014年
3期
68-72,79
,共6页
钻孔灌注桩%后压浆%垂直度%孔口直螺纹连接%单桩承载力%极限承载力
鑽孔灌註樁%後壓漿%垂直度%孔口直螺紋連接%單樁承載力%極限承載力
찬공관주장%후압장%수직도%공구직라문련접%단장승재력%겁한승재력
bored grouting pile%post grouting%verticality%straight thread connection at pile hole entrance%bearing capac-ity of single pile%ultimate bearing capacity
中钢天津响螺湾工程基础桩采用后压浆钻孔灌注桩，最大桩长达76 m，设计单桩承载力特征值达15000 kN。阐述该工程钻孔桩的施工工艺、施工中出现的问题和解决方法、孔口钢筋笼直螺纹对接技术、后压浆施工工艺。通过现场试验，全部桩为Ⅰ类桩，单桩承载力达到设计要求，极限承载力实测值最大为35000 kN，为工程桩的设计提供了可靠的技术参数。
中鋼天津響螺灣工程基礎樁採用後壓漿鑽孔灌註樁，最大樁長達76 m，設計單樁承載力特徵值達15000 kN。闡述該工程鑽孔樁的施工工藝、施工中齣現的問題和解決方法、孔口鋼觔籠直螺紋對接技術、後壓漿施工工藝。通過現場試驗，全部樁為Ⅰ類樁，單樁承載力達到設計要求，極限承載力實測值最大為35000 kN，為工程樁的設計提供瞭可靠的技術參數。
중강천진향라만공정기출장채용후압장찬공관주장，최대장장체76 m，설계단장승재력특정치체15000 kN。천술해공정찬공장적시공공예、시공중출현적문제화해결방법、공구강근롱직라문대접기술、후압장시공공예。통과현장시험，전부장위Ⅰ류장，단장승재력체도설계요구，겁한승재력실측치최대위35000 kN，위공정장적설계제공료가고적기술삼수。
The post-grouting bored pile was used for the foundation pile for Xiangluowan project of Sinosteel in Tianjin, the maximum length of the pile was 76m and the designed eigenvalue of bearing capacity of single pile was up to 15000kN.The paper elaborates the bored pile about its construction technology, technical difficulties and the solutions, straight thread connection technology for reinforcement cage at pile hole entrance and post grouting construction technology.The field tests prove that all the piles are of the classⅠ, the bearing capacity of single pile meets the design requirements and the maxi-mum value of ultimate bearing capacity is 35000kN.
