Method for designing progressive collapse-resisting frame structure

A framework and capability technology, which is applied in the design field of the continuous collapse resistance of the frame structure due to man-made accidents, can solve the problems of no design method and the inability to realize the continuous collapse resistance, achieve high accuracy and reliability, improve design efficiency, and simple design method. easy effect

Inactive Publication Date: 2012-07-04
厦门合立道工程设计集团股份有限公司
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  • Application Information

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.

Method used

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  • Method for designing progressive collapse-resisting frame structure
  • Method for designing progressive collapse-resisting frame structure
  • Method for designing progressive collapse-resisting frame structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1 (Design of anti-seismic continuous collapse)

[0057] Embodiment 1 is to carry out frame design to certain school building, and the seismic fortification intensity of this school location area is seven degrees, and design basic seismic acceleration is 0.15g, and design earthquake grouping is the first group, and building antiseismic fortification category is B class, and building structure is safe The grade is two. The following are the specific design steps:

[0058] 1) Carry out conventional structural calculation and analysis to obtain a simplified frame diagram (such as figure 1 shown) and reinforcement envelope diagram (such as figure 2 shown).

[0059] 2) Using the static nonlinear finite element collapse analysis method to analyze the collapse of the initial model of the frame, the load combination considers "1.0 dead load + 0.50 live load + 1.0 horizontal earthquake", the material strength takes the standard value, and the large earthquake is consi...

Embodiment 2

[0071] Example 2 (Design against continuous collapse due to man-made accidents)

[0072] Embodiment 2 is a reinforcement design for a certain school, the seismic fortification intensity of the area is seven degrees, the design basic seismic acceleration is 0.15g, the design earthquake grouping is the first group, the building anti-seismic fortification category is B, and the building structure safety level is two . Its frame diagram is as follows figure 1 .

[0073] 1) Carry out conventional structural calculation and analysis to obtain a simplified frame diagram (such as figure 1 shown) and reinforcement envelope diagram (such as figure 2 shown).

[0074] 2) Obtain the initial model of collapse analysis after removing the side columns, and use the static nonlinear finite element collapse analysis method to analyze and calculate the initial model of the collapse analysis of the frame when the side columns are removed. The load combination considers 1.0 dead load + 0.5 li...

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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 design method for man-made accident frame structure anti-continuous collapse. 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 conti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04B1/19G06F17/50
Inventor 杨玛莎方德平肖伟张南峰
Owner 厦门合立道工程设计集团股份有限公司
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