The feasible treatment schemes are discussed and compared,the safe,reliable,economical and reasonable treatment measure is summed up.

Taking Wanping expressway works as example and basing upon introduction of general geographic and geological situations geotechnical engineering questions encountered in construction are analyzed from three aspects: expansive soil subgrade,,sliding of side rock slope and tunnel collapse;at the same time corresponding treatment scheme is presented in order to provide references for similar works.

According to practical feature of the landslide, the rational treatment scheme is proposed at last.

Overview of the highway engineering foundation treatment methods

Brief talk on disease of asphalt concrete pavement and corresponding treatment method

According to problems existed in soft roadbed some treatment methods are introduced,which include replacement method with stone chip,cement injection pile and so on in order to ensure the stability of roadbed.

Combined with the practice of construction and maintaining,it analyzes the types and reasons of half-steel base bitumen concrete surface cracks,brings forward the protecting measures of cracks during construction,elaobrates the dealing methods of cracks,so as to solve the cracks problems on road surface,and prolong the using life of road surface.

In the light of the diseases that often appear on the bituminous concrete pavements such as pavement cracking, loosening, pitting, settling, tracking and so on, this paper analyzes their causes, and puts forward some corresponding treating methods and preventive countermeasures.

According to the quality problems easy to appear in the making of precast hollow slab,it analyses the reasons of inaccurate precast location, unsuitable bottom width,insufficient protecting layer,and inaccurate beam length,and points out the treating method,so as to guarantee the construction quality of precast beam.