And it is also pointed out that controlling the unequal settlement of the foundation due to geo-membrane deformation and eliminating the possible stability failure of the slope caused by soft foundation are the important principles for the design of landfill in soft soil area.

Some engineering problems are caused by ground unequal settlements.

The preventive measures for uneven settlement of building foundation on reclamation land in coal mining subsidence area;

The causes of uneven settlement of high-filled embankment in mountainous area and its prevention and cure;

Control of uneven settlement of building foundation;

Analysis of influence by differential settlement of foundation to cement concrete pavement load stress;

Study on the differential settlement of widened road;

Adjusting quantity of backfilling earth to solve differential settlement of foundation;

Discussion on control of uneven subsidence in transitive section of road & bridge from roadbed design;

There are several methods to cope with the common problem of the uneven subsidence of foundation.

It analyzes the reasons generating multi storied brick wall crack from the aspects of brick wall material,construction,design,ambient temperature,non-uniform settlement of foundation,and brings forward corresponding prevention measures for settlement crack,thermoelectric crack,structural crack,which will increase quake-proof performance of buildings and the degree of safety for structures.

Especially in the reconstruction of the old highway,it would bring a difficult problem of non-uniform settlements between the new and the old embankment because of the big void ratio,the small permeability coefficient and the long time of settlement.

Stress status and strain status of underground multiple arch structure and!the overlying soil were analyzed with elasto-plastic FEM,and the minimization of ground surface non-uniform settlement was taken as design objective.