Combined with project survey,it analyzes the reasons generating crack on the board casting in place of house from the aspects of the structural stiffness break,not installing desirable dilatation joint,steel bar fall on bearing,temperature,shrinkage etc,and brings forward corresponding prevention measures,which will eradicate the crack on the board casting in place.

A simplified formula was developed to calculate the local structural stiffness of each bump of the bump foil with the consideration of frictions between bump foil and its contact surfaces,and the influences of different parameters on the structural stiffness were analyzed.

Using the concept of load capacity coefficient,the effect of the variations of structural stiffness in circumferential,axial and radical directions on the performance of load capacity of foil bearing were analyzed.

China′s dual economic structure is characterized by its own structural rigidity,which is expressed by the specific feature that the transformation of China′s dual economic structure is ′solidified′,namely,the employment transformation of the rural labor force lags seriously behind the production value transformation,and it is difficult to narrow the gap between urban and rural areas,etc.

The criteria of conceptual design on high-rise building structure rigidity are introduced in this paper.

Weighted generalized inverse method for topological modification of frame structures;

The stochastic finite element controlling equation of frame structure is deduced.

Aiming at the insufficient research of reliability analysis on stiffness for system,the method of continual variation on stiffness for frame structure is derived.

The low frequency noise of the ring-stiffened cylinder with double shell is depressed by increasing structure stiffness,the numerical simulation is adopted to evaluate the acoustics performance,find that the vibration and acoustic radiation of the structure could be depressed by increasing the structure stiffness within the discontinuous range of the low frequency.

Based on the project of Guangzhou Gu angda cesidential building,this paper presents structure design of a high -rise residential building with transition story,which includes t he selections of structure arrangem ents,the design of subsoil and foundation,in ternal force analysis and calculation,adjustment of structure stiffness and related structural construction measures,etc.