周雨恒,周浩,袁明,张鹏,曾聪

• 1:中国地质大学(武汉)工程学院
• 2:中山大学土木工程学院
• 3:四川电力设计咨询有限责任公司

摘要(Abstract)：

为探究不同管土接触状态下圆曲线顶管顶进力计算方法，结合港珠澳大桥拱北隧道曲线钢顶管工程的相关数据，利用国内外几种常用的曲线顶管顶进力计算公式，以及利用ABAQUS软件建立的考虑注浆作用和管土接触范围的顶进力有限元分析模型，分别进行了顶进力计算。与实测顶进力数据的对比分析表明：(1)顶进力计算值大小为：JMTA公式?上海规范公式>Shimada公式，其中考虑1/3管土接触面的Shimada公式下限计算值与实测值较为接近。(2)通过数值模拟发现，1/3管土接触状态模拟顶进力，逐渐向1/2管土接触状态接近；在注浆状态下，前期实测顶进力接近1/2管土接触状态下的顶进力；后期顶进趋近平稳时，实测顶进力接近1/3管土接触状态下的顶进力。本数值模型能够对同类型工况下顶管顶进力进行较好预测，对实际施工具有一定的指导意义。

关键词(KeyWords)： 曲线顶管;顶进力;数值模拟;管土接触;注浆压力

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 周雨恒,周浩,袁明,张鹏,曾聪

DOI: 10.19509/j.cnki.dzkq.tb20210729

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