中文摘要：

目的为黄土地带高速公路建设提供黄土动力学依据和优选新的施工法。方法以山西境内祈临高速公路北张沟高填路段为例，主要从黄土的结构特点和力学性质上分析，并通过现场及室内实验论证，综合比新法与常规法的异同点。结果强夯压实法在黄土地基加固处理中具有合理性与有效性，随着夯击能量的增大，压缩模量显著增大；击数越大，强度增长幅度也越大，但击实功过大会使试件的初期强度降低；压实力大于300 kPa时，随龄期变化很明显；静力触探结果表明强夯压实后黄土强度显著提高。结论强夯振动压实法简单、实用，能快速有效地提高黄土地基和路基的强度，确保工程实施的安全性。

英文摘要：

Aim Provides the loess dynamics basis and the new technology for the loess region highway construction. Methods Take the high filled section of BEIZHANG ditch in qilin highway for instance, analysed from the loess structure feature and mechanical properties, and proved through experiment in the scene and the lab, syntactically compared similarities and differences between dynamic compaction and conventional compaction method. Resuits This method has the the rationality and the validity in loess ground reinforcement processing, along with conpact energy increasing, the compression module remarkably increases; when striking number in a big way, the intensity growth scope is also bigger, but this may cause the test sample the initial period intensity reduce; When compaction effort is bigger than 300 kPa, is very obvious along with the age time change; the static sounding result indicates the loess intensity remarkable enhancement after the dynamic compaction. Conclusion Dynamic compaction was a simple and practical method that can effectively enhanced the loess ground and the subgrade strength , and guarantee security of the project.