Load and loads combination in BS5400 codes;

Some discussions on Code for Dynamic Machine Foundation Design(GB 50040-96) are had,including mass-spring-damper model,dynamic foundation parameters,load combination and structural requirements.

The paper describes the comparison of the calculation of load combination and flexure of reinforced concrete beams between the code for design of concrete structures(GB 5001-2002) of China and ACI 318-95 of the United States.

In the present code for building structure design, empirical load combination rules are commonly used, which generally results in non-objective design combination load values and does not provide an approach to evaluate the probability of an actual combination load to exceed a prescribed load value.

The work focused on evaluating the mutual influences among different loads, resistance behaviors of pile under combined loads and the properties of yield envelopes of bearing capacities.

According to the stress distribution issues of cooling tower under combined load, in this paper applying simple finite element analysis method of thin shell the stress distributions under wind load and temperature load are calculated; on the other hand the security appraisal is made.

By solving its stability different ial equation using Kayleighs quotient, the critical load calculation method for this type of paling acted on combined load was proposed.