摘要
提出用反分析法，根据横向受载试桩实测资料（通常包括泥面处挠度、转角和桩身若干点弯矩）确定弹性地基模型参数，该法充分利用所有实测资料，采用优化算法，力求计算值在整体上与全部实测值接近，从而使地基参数的反演建立在更合理可靠的基础上。利用此法，根据多级荷载下试桩资料还可以求出弹塑性地基模型的ＰＹ曲线族。算例证明该法简便可行，且能克服一些方法对弯矩实测值精度要求过高的缺点。
he tried-and-error method is frequently adopted at present for determining the parameters of elastic pile foundation model on the basis of field test results of laterally loaded piles.Because of the limited number of parameters,only a few measured values are used.And this affects the accuracy of the determined parameters. The back analysis procedure presented in this paper attempts to make all calculated values agree with all measured data by means of the optimal algorithm,so that the determination of foundation parameters will be reasonable and reliable. Using the back analysis method , the P-Y curves of the elasto-plastic pile-foundation can also be determined on the basis of the test pile data for multistage load.The results of examples show that the present method is simple and feasible and can overcome the disadvantages of some methods of requiring high accuracy of the field measured bending moments.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1994年第4期60-66,共7页
Journal of Hohai University(Natural Sciences)
关键词
横向受载桩
现场试验
反分析
Laterally loaded pile Field test Back analysis Parameter of pile-foundation P-Y curve
