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基于刚性桩的结构变位方程,结合弹性地基理论“C值”法,提出一种用于在软土中高耸结构钢管单桩工程设计的简化计算方法,采用某软土地区原型试验结果对新、旧设计方法进行验证和比对,结合算例考察新方法的适用性。结果表明:在试验软土地区,采用该方法获得的桩身弯矩、桩侧土抗力和桩顶水平位移较弹性地基“m法”、刚性短柱法更为接近试验结果且具有安全储备。算例分析证明该方法在部分软土地区较传统工程计算方法更具经济性。
Based on the structural displacement equation of rigid pile and the theory of elastic foundation “C value”, a simplified calculation method is proposed for the design of high-rise structural steel single pile in soft soil. The prototype test results of a soft soil area The new and old design methods are verified and compared with examples to examine the applicability of the new method. The results show that in the test soft soil area, the pile bending moment, the soil resistance at pile side and the pile top horizontal displacement obtained by this method are more close to the experimental results and safer than the elastic foundation "m method reserve. The case study shows that this method is more economical than some traditional engineering methods in some soft soil areas.