Method for detecting strength of reinforcing steel bar after general fire in simulated open space

A technology of open space and detection method, which is applied in the direction of using stable tension/pressure to test the strength of materials, etc., to achieve the effect of long holding time and fast heating speed

Pending Publication Date: 2022-06-21
贵州中建伟业建设(集团)有限责任公司 +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it was found in later scientific research that many fires are often difficult to extinguish in time, and, according to the differences in building structures,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for detecting strength of reinforcing steel bar after general fire in simulated open space
  • Method for detecting strength of reinforcing steel bar after general fire in simulated open space
  • Method for detecting strength of reinforcing steel bar after general fire in simulated open space

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The embodiment of the present invention: simulates a method for detecting the strength of steel bars after a general fire in an open space, adopts electromagnetic induction heat treatment technology to heat up, simulates the actual fire temperature, heats the steel bars in a relatively open space, and after heating the steel bars to a predetermined temperature, The temperature was maintained for 0.5 hours; after the heat preservation, the heating was stopped, and the steel bars were allowed to cool naturally in an open environment, and then the ultimate strength test of the cooled steel bars was carried out to obtain the ultimate strength test data of the steel bars.

[0015] Specifically, the electromagnetic induction heat treatment technology is adopted as the heating device. During the heating process, the round copper tube is energized with a current of 5A, and an eddy current is formed in the spiral shape, and the steel bars are placed in the middle of the spiral sha...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
The inside diameter ofaaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for detecting the strength of reinforcing steel bars after a general fire disaster in a simulated open space. According to the invention, the electromagnetic induction heat treatment technology is adopted for heating, the condition of natural cooling after combustion in a fire scene under a relatively open condition is simulated, the heating speed is high, and the fire scene environment under the open condition can be accurately simulated; the change of the reinforcing steel bar can be close to a real fire scene, the ultimate strength of the reinforcing steel bar corresponding to different fire scene temperatures can be accurately calculated by the constructed formula, and theoretical support is provided for association of the reinforcing steel bar structure after the fire to building performance.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a method for detecting the strength of steel bars after simulating a general fire in an open space. Background technique [0002] After a fire occurs in a building, there is an open building. This open building is an isolated building. After the fire, the heat dissipates quickly. After the building is on fire, the cooling speed is faster. , the maximum elongation and ultimate strength of steel bars determine the seismic performance of buildings, such as ductility and energy consumption. [0003] The inventor of the present application has previously conducted relevant research on the situation of buildings being extinguished in the process of fire, and has applied for relevant patents. However, in the later scientific research, it was found that many fires are often difficult to be extinguished in time. Moreover, according to the difference in building structure, it is v...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N3/18
CPCG01N3/18
Inventor 杨晓辉张谦杨巍方玲
Owner 贵州中建伟业建设(集团)有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap