中国煤炭地质
中國煤炭地質
중국매탄지질
Coal Geology of China
2015年
9期
52-54
,共3页
岩基载荷试验%桩孔灌注桩%端承载力值计算%相似工程
巖基載荷試驗%樁孔灌註樁%耑承載力值計算%相似工程
암기재하시험%장공관주장%단승재력치계산%상사공정
rock foundation load test%bored cast-in-place pile%pile end bearing capacity estimation%similar project
岩基载荷试验,一般安排在天然地基或干作业混凝土灌注桩底部。当岩基载荷试验在地表测试时,就不可避免的存在桩周摩擦力的影响。选择工程地质条件相似的区域,依据不同桩径钻孔灌注桩的岩基载荷试验,运用规范中的估算公式,消除桩周摩擦力的影响,计算了桩端持力层的承载力值。该方法为今后合理、经济地确定桩端持力层的承载力值提供了一个新的思路。
巖基載荷試驗,一般安排在天然地基或榦作業混凝土灌註樁底部。噹巖基載荷試驗在地錶測試時,就不可避免的存在樁週摩抆力的影響。選擇工程地質條件相似的區域,依據不同樁徑鑽孔灌註樁的巖基載荷試驗,運用規範中的估算公式,消除樁週摩抆力的影響,計算瞭樁耑持力層的承載力值。該方法為今後閤理、經濟地確定樁耑持力層的承載力值提供瞭一箇新的思路。
암기재하시험,일반안배재천연지기혹간작업혼응토관주장저부。당암기재하시험재지표측시시,취불가피면적존재장주마찰력적영향。선택공정지질조건상사적구역,의거불동장경찬공관주장적암기재하시험,운용규범중적고산공식,소제장주마찰력적영향,계산료장단지력층적승재력치。해방법위금후합리、경제지학정장단지력층적승재력치제공료일개신적사로。
The rock foundation load test is generally planed on natural foundation or dry operated concrete cast-in-place pile bottom. When the test is on ground surface, the impact from friction around pile is inevitable. The paper selected regions have similar engineer?ing geological condition, carried out rock foundation load tests for bored cast-in-place piles with different pile diameters, using estima?tion formula from related criterion to eliminate impact from friction around pile, estimated pile end bearing stratum bearing capacity. The method has provided a new idea for reasonable, economical determination of pile end bearing stratum bearing capacity henceforth.