上海国土资源
上海國土資源
상해국토자원
SHANGHAI LAND&RESOURCES
2011年
3期
81-86,92
,共7页
大直径管桩%水平荷载%静载试验%极限承载力%海洋工程
大直徑管樁%水平荷載%靜載試驗%極限承載力%海洋工程
대직경관장%수평하재%정재시험%겁한승재력%해양공정
large diameter pipe pile%lateral load%static loading test%ultimate bearing capacity%ocean engineering
通过海洋环境条件下大直径管桩的垂直和水平荷载试验,分析了管桩在垂直和水平荷载作用下的受力特点,得到了管桩的垂直极限承载力、侧摩阻力及端承力、轴向反力系数等结果,以及水平荷载作用下桩顶位移和转角关系、弯矩分布、土抗力、水平地基反力系数的比例系数和最大弯矩点等参数。试验结果表明：垂直荷载作用下,极限承载力可达12000kN,在沉桩过程中部分桩有一定程度的闭塞;大直径管桩能够抵抗水平荷载的作用,弹性长桩的受力性质主要受上部土层的影响。根据试验结果计算的水平地基抗力比例系数m值,对本工程及同类地质条件的桩基设计具有参考价值。
通過海洋環境條件下大直徑管樁的垂直和水平荷載試驗,分析瞭管樁在垂直和水平荷載作用下的受力特點,得到瞭管樁的垂直極限承載力、側摩阻力及耑承力、軸嚮反力繫數等結果,以及水平荷載作用下樁頂位移和轉角關繫、彎矩分佈、土抗力、水平地基反力繫數的比例繫數和最大彎矩點等參數。試驗結果錶明：垂直荷載作用下,極限承載力可達12000kN,在沉樁過程中部分樁有一定程度的閉塞;大直徑管樁能夠牴抗水平荷載的作用,彈性長樁的受力性質主要受上部土層的影響。根據試驗結果計算的水平地基抗力比例繫數m值,對本工程及同類地質條件的樁基設計具有參攷價值。
통과해양배경조건하대직경관장적수직화수평하재시험,분석료관장재수직화수평하재작용하적수력특점,득도료관장적수직겁한승재력、측마조력급단승력、축향반력계수등결과,이급수평하재작용하장정위이화전각관계、만구분포、토항력、수평지기반력계수적비례계수화최대만구점등삼수。시험결과표명：수직하재작용하,겁한승재력가체12000kN,재침장과정중부분장유일정정도적폐새;대직경관장능구저항수평하재적작용,탄성장장적수력성질주요수상부토층적영향。근거시험결과계산적수평지기항력비례계수m치,대본공정급동류지질조건적장기설계구유삼고개치。
According to the vertical and lateral loading test in condition of ocean environment,the mechanical properties of the large diameter pipe pile under vertical and lateral load is analyze.The ultimate bearing capacity,shaft resistance and point resistance force,and coefficient of axial reaction,etc.,in case of vertical loading,and displacement vs deflection of in pile block,bending moment distribution,earth resistance,coefficient of proportionality of horizontal subgrade reaction and point of the maximum bending moment,etc.,in case of lateral loading are obtained.It is shown from the test results that the ultimate bearing capacity of the large pipe piles is 12000kN.Some certain of clogging effect occur during the driving process of the some pile.In addition,the piles can effectively bear the lateral loads,and the bearing capacity of the long elastic pile is mainly affected by the upside soil and the calculated proportional coefficient describing the lateral resistance of foundation can be used as a reference for the design of the similar engineering.
