Device and method for testing progressive collapse performances of concrete plate-column structure

Abstract

The invention relates to a device and method for testing the progressive collapse performances of a concrete plate-column structure. The progressive collapse of the structure is the progressive collapse, caused by a local damage failure caused by an incidental load, of a member connected with a failure damaged member, and finally may cause the overall collapse of a building structure or the collapse damage in a larger range relative to the initial local damage, thereby causing a large number of casualties and a great deal of financial loss. Therefore, the design of the progressive collapse performance of the structure is important. The device and method are used for carrying out the testing of the progressive collapse performances of the plate-column structure, and carry out the research of the distribution conditions of internal forces when the plate-column structure is caused by the accidental load to be partially invalid. The device and method carries out the design of the progressive collapse of the plate-column structure based on the internal force redistribution, and guarantees that the plate-column structure has the capability of resisting the progressive collapse under certain safety and reliability conditions.

Description

technical field [0001] The invention relates to a continuous collapse performance test device and test method of a concrete slab-column structure, belonging to the field of disaster prevention and mitigation of building structures. Background technique [0002] Structural continuous collapse refers to the local failure of the structure caused by accidental loads, which in turn causes continuous failure of the components connected to the failed components, and may eventually lead to the overall collapse of the building structure or cause a larger collapse than the initial local failure. , resulting in a large number of casualties and property losses. Therefore, the design of the structure against progressive collapse is very important. Studies have shown that compared with frame structures, slab-column structures are more susceptible to damage or more severely damaged in progressive collapses. When the slab-column structure suffers initial local damage, the redistribution o...

AI Technical Summary

Problems solved by technology

When the slab-column structure suffers initial local damage, the redistribution of internal forces will lead to a substantial increase in the bending force and shear force of the slab-column nodes adjacent to the initial local damage, resulting in node failure, thereby causing a larger continuous range in the structure. collapse

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