In order to evaluate the stability of the upper structure of the cross and the pillar - soil compound foundation , and provide more theoretical bases for design and construction of this type of jacking frame - overhead cross in future , the 2d fem analyses for bearing - deformation of the frame structure of the cross and the pillar - soil compound foundation are carried out , and some relevant conclusions are obtained 為了評(píng)判該立交橋上部結(jié)構(gòu)與樁-土復(fù)合地基的穩(wěn)定狀態(tài),同時(shí)為今后此類型頂進(jìn)框架立交橋的設(shè)計(jì)與施工提供更多的理論依據(jù),對(duì)該立交橋的框架結(jié)構(gòu)與樁-土復(fù)合地基的承載變形進(jìn)行了平面有限元分析,取得了相應(yīng)的認(rèn)識(shí)。