工程质量
工程質量
공정질량
QUALITY OF CIVIL ENGINEERING AND CONSTRUCTION
2015年
8期
83-85,89
,共4页
刚柔组合桩%动力试验%主频%峰值加速度%爆破地震持续时间
剛柔組閤樁%動力試驗%主頻%峰值加速度%爆破地震持續時間
강유조합장%동력시험%주빈%봉치가속도%폭파지진지속시간
rigid-flexible pile%dynamic test%frequency%peak acceleration%blasting vibration duration
基于优化桩型的思想,选取夯实水泥土桩及CFG桩进行优化组合,组成刚柔组合桩复合地基.用爆破的方式模拟地震提供震源,进行现场动力试验,通过研究不同载荷作用下,组合桩中夯实水泥土桩、CFG桩两种桩不同的动力反应,分别从峰值加速度、主频及持续时间的角度进行了对比研究,得到了在爆破地震荷载作用及其他条件都相同时,随着静载试验载荷量的增大,两种桩型的峰值加速度逐渐减小;两种桩型爆破地震动持续时间从桩顶到桩底逐渐增大的结论.
基于優化樁型的思想,選取夯實水泥土樁及CFG樁進行優化組閤,組成剛柔組閤樁複閤地基.用爆破的方式模擬地震提供震源,進行現場動力試驗,通過研究不同載荷作用下,組閤樁中夯實水泥土樁、CFG樁兩種樁不同的動力反應,分彆從峰值加速度、主頻及持續時間的角度進行瞭對比研究,得到瞭在爆破地震荷載作用及其他條件都相同時,隨著靜載試驗載荷量的增大,兩種樁型的峰值加速度逐漸減小;兩種樁型爆破地震動持續時間從樁頂到樁底逐漸增大的結論.
기우우화장형적사상,선취항실수니토장급CFG장진행우화조합,조성강유조합장복합지기.용폭파적방식모의지진제공진원,진행현장동력시험,통과연구불동재하작용하,조합장중항실수니토장、CFG장량충장불동적동력반응,분별종봉치가속도、주빈급지속시간적각도진행료대비연구,득도료재폭파지진하재작용급기타조건도상동시,수착정재시험재하량적증대,량충장형적봉치가속도축점감소;량충장형폭파지진동지속시간종장정도장저축점증대적결론.
Based on the idea of pile-type optimization,rammed soil-cement pile and CFG pile composition were grouped to rigid-flexible piles composite foundation,the dynamic test were completed using blasting simulating earthquake,two different kinds piles dynamic response in rigid-flexible piles composite foundation were studied. From the Angle of the peak acceleration,frequency and duration are analyzed in comparison,we got the conclusions. In the same under blasting vibration loading,all other conditions being equal,along with the rising of the upper load,the peak accelerations of cement-soil pile and CFG pile composite foundation were decrease,Blasting vibration duration were increase gradually,from the pile bottom to top,the maximum were located on the top of the pile.
