土钉墙支护位移计算方法与分析比较

Analysis of displacement of soil nailing wall and comparison of calculation methods

通过对国内外土钉墙支护技术的发展过程及研究成果的总结,并结合我国复合土钉墙的发展情况,指出复合土钉墙支护结构位移计算的重要性。尽管一些学者对土钉墙支护的位移计算方法进行了探讨,但目前复合土钉墙支护结构位移还没有一个公认的简化计算方法,工程应用尚不成熟。有限元方法由于其模型复杂性,目前在实际工程中难以普及应用。本文对几个简化计算方法进行介绍并分析其不足,通过工程实例进行对比说明,虽然总体来看增量位移法计算结果相对其它方法接近实测值,但参数的确定有一定难度。

By summing up domestic and abroad soil nailing wall technological development, research findings, and combined with the development of composite soil nailing wall in China, It is clear that horizontal displacement calculation of composite soil nailing wall has become very important in recent years. However, the current calculation methods of composite soil nailing wall displacement have not yet recognized as reasonably simplified calculation methods. Due to the complexity of their models, the finite element method is difficult to popularize in practical engineering applications. This paper introduces several simplified calculation methods, and compare the advantages and disadvantages of various methods by an engineering example. The results show that result of incremental displacement method is more accurate than other methods, but it is difficult to determine the parameters.