Method for designing progressive collapse-resisting frame structure

Abstract

The invention provides a method for designing a progressive collapse-resisting frame structure, relating to an architecture structure design method. The invention provides a simple, easy and high reliable method for designing the progressive collapse-resisting frame structure, and comprises a design method of progressive collapse resistance due to earthquake action and a design method of progressive collapse resistance due to human accidents. The invention is characterized in that analysis and calculation on static nonlinear collapse for a plane frame are carried out by using a limited unit method according to the characteristic of collapse of the frame structure and in view of geometrically nonlinear influence under the conditions of nonlinear and large displacement of materials; carrying out collapse-resisting analysis on the two progressive collapses to provide design methods with progressive collapse resistance, wherein the design methods are suitable for the background of design specifications of China, have operability of engineering application, and comprise the design method of progressive collapse resistance due to earthquake action and the design method of progressive collapse resistance due to human accidents.

Description

technical field [0001] The invention relates to a building structure design method, in particular to a frame structure anti-continuous collapse design method. Background technique [0002] The continuous collapse of the structure refers to the local damage of the structure caused by accidental loads, which triggers a chain reaction and causes the damage to spread to other parts of the structure, eventually causing the main body of the structure to lose its bearing capacity and causing a large-scale collapse of the structure. Generally speaking, if the structure eventually The damage state is not proportional to the initial damage, which can be called progressive collapse. The reasons can be attributed to two types: the first type is the progressive collapse caused by the earthquake. The second category is the continuous collapse caused by accidental load overloads such as impact and explosion, and man-made accidents. At present, the phenomenon of continuous collapse of buil...

AI Technical Summary

Problems solved by technology

The second category is the continuous collapse caused by accidental load overloading such as impact and explosion, and man-made accidents.

At present, the phenomenon of continuous collapse of building structures occurs from time to time. Although relevant anti-collapse requirements have been made in domestic and foreign design codes, they are only guiding and conceptual requirements, and there is no specific and direct implementation of the design method.

Therefore, only conventional building structure design methods cannot achieve performance design against progressive collapse.

Images