The paper is based on the research of the engineering geological condition of a typical building in Linchuan city,rational confirmed batholith s parameter,and demonstrated the program of subgrade and foundation.

Uneven settlement questions of the foundation of structure in mountain area;

Safety assessment of suspension bridge foundation based on monitoring information;

Design and construction of foundation in mountain area;

Study on dynamic combined action between ground foundation and superstructure;

Principle and characteristics of associate calculation,while upper structure and ground foundation act together,were introduced.

The firsthand information was obtained from practical application of fly ash to ground foundation engi-neering in Chao Shan area through systematic indoor and practical experiments that provided design criteria for popular-ization of fly ash in this area.