路基工程
路基工程
로기공정
SUBGRADE ENGINEERING
2011年
6期
73-76,79
,共5页
刘国强%王亚堃%胡德功%龚成中
劉國彊%王亞堃%鬍德功%龔成中
류국강%왕아곤%호덕공%공성중
桥梁工程%大直径嵌岩桩%荷载传递%桩侧阻力
橋樑工程%大直徑嵌巖樁%荷載傳遞%樁側阻力
교량공정%대직경감암장%하재전체%장측조력
bridge engineering%large diameter rock-socketed pile%load transfer%pile lateral resistance
对青岛海湾大桥4根大直径嵌岩桩,利用自平衡测试技术进行静载荷测试,分析了大直径深嵌岩桩(嵌岩比大于3)的承载特性——荷载位移曲线、侧摩阻力与位移的关系、以及侧阻力与端阻力的分担比等,并与三种规范对比,分析了不同规范的取值大小及存在问题。对比分析了自平衡测试与锚桩法测试结果,为该地区大直径深嵌岩桩基承载力的确定提供依据。
對青島海灣大橋4根大直徑嵌巖樁,利用自平衡測試技術進行靜載荷測試,分析瞭大直徑深嵌巖樁(嵌巖比大于3)的承載特性——荷載位移麯線、側摩阻力與位移的關繫、以及側阻力與耑阻力的分擔比等,併與三種規範對比,分析瞭不同規範的取值大小及存在問題。對比分析瞭自平衡測試與錨樁法測試結果,為該地區大直徑深嵌巖樁基承載力的確定提供依據。
대청도해만대교4근대직경감암장,이용자평형측시기술진행정재하측시,분석료대직경심감암장(감암비대우3)적승재특성——하재위이곡선、측마조력여위이적관계、이급측조력여단조력적분담비등,병여삼충규범대비,분석료불동규범적취치대소급존재문제。대비분석료자평형측시여묘장법측시결과,위해지구대직경심감암장기승재력적학정제공의거。
Four large-diameter rock-socketed piles in Qingdao Gulf Bridge were tested for their static load using self-balanced testing technology. Then the bearing characteristics - load displacement curve of large- diameter rock-socketed pile (with rock ratio more than 3 ), the relationship between lateral resistance and displacement, and the sharing ratio between lateral resistance and end resistance are analyzed. Through comparing three standards, the value and existing problems of different standard are analyzed. The results obtained from self-balanced testing method and anchor pile method are compared to provide evidence for determination of the bearing capacity of large-diameter rock-socketed pile foundation in this area.