Combined with practical experiences and structural features of composite structure buildings wall cracks caused by uneven settlement of foundation and temperature stress are briefly analyzed,at the same time some practicable prevention and treatment measures are proposed in order to reduce the production of cracks to ensure appearance quality and service function of structure.

The influences on deformation and internal force of the superstructure caused by ground unequal settlement;

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.