To control the settlement of roadbed , the degree of compaction regulated by current criterion is not enough , the mechanics parameter of filler compacted - - deformation parameter should be considered and dual control criterion should be put in practice . to get upper deformation parameter of xigeda stratum filler , the percentage of mudstone should be controlled . the thickness of filling layer regulated by current criterion can be increased if the compaction car has proper function 通过此次研究，获得了对路堤变形问题的新的认识，即为了控制路堤的沉降变形，不仅应满足现行规范中规定的压实度标准，还应该引入填料压实后的力学参数? ?变形模量值标准，实行双重控制标准，而对于昔格达地层这种混合填料，为了获得较大的模量值，应该控制填料中泥岩的含量；现行公路路基施工规范中对路堤填筑时分层填筑厚度的规定值，在压实机具功能满足的条件下，可以适当提高。
The article is based on the eastern section of the mainline of hu rong national road , it put forward some feasible prevention ' s technology and measures directing against different type of engineering , which is based on the investigation and analysis to types and formation ' s cause of various engineering disease of highway ' s subgrade and pavement , structure of bridge and culvert and engineering along road . it evaluate the bridge safety by ahp and forecast the character changing with time of bridge structural defect by grey system theories 本文以沪蓉国道主干线东段为依托工程，在对高等级公路路基路面工程、桥涵结构工程、公路沿线存在的各种工程病害的类型与成因进行调查与分析的基础上，针对不同类型的工程病害提出切实可行的防治技术措施，并用层次分析法评价桥梁结构的安全性和用灰色系统理论对桥梁结构存在的缺陷随时间变化的性状进行预测。
Since the company holds water oneself , early or late bear build highway , railroad , irrigation works , subway , bridge and large cubic metro of earth and stone to blow up wait for a project more than 60 , channel overall length 70 much kilometers , already was over highway roadbed 160 much kilometers , road surface kilometer of 220 much square , bridge 5 公司自成立以来，先后承建公路、铁路、水利、地铁、桥梁和大型土石方爆破等项目60余个,隧道总长70多公里，已完公路路基160多公里，路面220多万平方公里，桥梁5座。
