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（1 浙江大學(xué)土木系  杭州 310027； 2 杭州天元建筑設(shè)計(jì)院  311201）
【提要】  考慮了土錨桿和擋土樁的共同作用，對(duì)土錨桿抗拔力試驗(yàn)得出的P-s曲線采用最小二乘法進(jìn)行多項(xiàng)式擬合，求得非線性回歸函數(shù)，并根據(jù)錨桿與擋土樁交點(diǎn)變形協(xié)調(diào)關(guān)系，列出非線性方程組，采用不動(dòng)點(diǎn)迭代法求解方程組。并給出了工程實(shí)例。
【關(guān)鍵詞】  土錨桿  擋土樁  共同作用  最小二乘法  非線性回歸函數(shù)
A Nonlinear Fitting Solution of Combined Actions of Soil Anchor Rod and Earthretaining Pile Wall /Liu Anjun 1，2，Qian Guozhen2，Gong Xiaonan1（1 College of Civil Engineering and Architecture，Zhejiang University，Hangzhou 3
10027，China；2 Hangzhou Tianyuan Architecture Design and Research Inc.，Ltd.，Hangzhou 311201，China）
Abstract:The combined actions of soil anchor rod and earthretaining pile wall are considered. Based on the withdrawal resistance testing P-s curve of soil anchor rod，multinomial fitting P-s curve are doing through the method of the least squares，and the nonlinear regression function is gained. According to compatibility of deformation relationship of the crossing point of soil anchor rod and earthretaining pile wall，nonlinear equations are listed，and equations through fixed point iterative program are worked out. Practical cases are provided as well.
Keywords:soil anchor rod；earthretaining pile wall；combined actions；method of the least squares；nonlinear regression