Material properties and partial factors for resistance of high-strength steels in China

Shi, Gang; Xi, Zhu; Ban, Huiyong

doi:10.1016/j.jcsr.2016.01.012

Cited by 71 publications

(17 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ban et al [20], [21] conducted an experimental study of the residual stress of 460 MPa I-and box-section members, proposing residual stress distributions for both types. The results showed that the residual stress distributions of [14]- [16] not complying with existing specifications would improve the accuracy of the stability factor.…”

Section: Cross-sectionsmentioning

confidence: 99%

“…In order to provide reasonable partial factors for the resistance of HSS structures, Shi et al [14] collected more than 10 000 samples of material property data on HSS in China and conducted independent material tests. Further, uncertainties regarding the resistance model for HSS, including axial compression members, flexural members and members under combined axial compression and bending, were investigated using numerical analyses.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Research advances in HSS structures at Tsinghua University and codification of the design specification

Shi

Chen

2018

Steel Construction

Self Cite

View full text Add to dashboard Cite

In Memoriam of Prof. Dr. Bernt Johansson Owing to the advantages in economy, environmental protection and energy efficiency, high‐strength steel (HSS) has represented an important trend in the development of steel structures and has been adopted in numerous building and bridge structures. This article summarizes engineering applications for HSS structures and comprehensively reviews the recent research advances in HSS structures at Tsinghua University. Investigations were conducted into the behaviour and performance of HSS materials, sections, members, connections and structural systems. Based on the research results, the mechanical behaviour of HSS structures could be improved compared with ordinary strength steel structures. In order to update the current design codes so that they are applicable for HSS structures, a new specification in China, the ”Standard for Design of High‐Strength Steel Structures“, is undergoing codification, with Tsinghua University as the chief editorial institute. The outline of the specification, as well as the new design methods included in it, is introduced in this paper.

show abstract

Section: Cross-sectionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research advances in HSS structures at Tsinghua University and codification of the design specification

Shi

Chen

2018

Steel Construction

Self Cite

View full text Add to dashboard Cite

show abstract

“…Ban et al [31] and Shi et al [32] proposed two-stage constitutive models for high-strength steel with and without yield plateaus and the accuracy of the two models was proved. According to the material test results (Shi [16]), high-strength steel Q550 exhibited a short yield plateau, and such that the two-stage constitutive model with a yield plateau was adopted in this paper.…”

Section: Constitutive Modelmentioning

confidence: 99%

Fire Resistance Performance Analysis of High Strength Steel Q550 Columns Under Axial Compression

2019

View full text Add to dashboard Cite

A B S T R A C T A R T I C L E H I S T O R YWith the improvement in steel production technology, high-strength steel, as a building material, has become a new current in civil engineering. To reveal the mechanical behavior of axially compressed high-strength steel Q550 (a nominal yield strength f y ≥550 MPa) columns without axial constraint at elevated temperatures, the finite element method was used to establish several transient analysis models with the software ABAQUS. The accuracy of the finite element model was verified by comparison with the results of prior experiments. To investigate the mechanical behavior and failure mechanism of high-strength steel Q550 columns in fire, the fire resistance of Q550 columns was numerically simulated and analyzed based on effective finite element models. The effects of the parameters on the fire resistance of high-strength steel Q550 column with a rectangular hollow section under axial compression were studied with an emphasis on the load ratio, initial imperfection amplitude, slenderness ratio and sectional dimensions. The results indicate that the load ratio is the main factor affecting the fire resistance performance of high-strength steel Q550 columns.

show abstract

“…[2]. So the conversion factor affected by testing rate can be calculated as [5]: (2) In order to quantify , 14 sets of data collected from previous studies [3][4] were analysed, and the values of statistical parameters of are shown in Table 1. Based on the previous studies [3][4], the measured strength will increase with the increase of the testing rate.…”

Section: Statistical Parameters Of Materials Uncertaintymentioning

confidence: 99%

“…The influence of testing method is always caused by two factors: testing rate and the compliance of testing machine. The conversion factor affected by the compliance of testing machine be calculated as [5]: In building structures, the actual loading of members can be seen as quasi-static process.…”

Section: Statistical Parameters Of Materials Uncertaintymentioning

confidence: 99%

12.23: Research on low‐yield‐point steels in Tsinghua University

2017

Self Cite

View full text Add to dashboard Cite

For the advantages of low yield strength, high tensile-to-yield strength ratio and excellent ductility, low-yield-point steels are extremely applicable for energy dissipation in seismic design of steel structures, so they are more and more used in steel structures in seismic areas. To get comprehensive understanding on material properties of low-yield-point steels and give support to the design and engineering application, the research group in Tsinghua University has conducted the study on the LY100, LY160 and LY255 three grades of low-yield-point steels in China. The data of mechanical properties such as tensile strength, yield strength, percentage elongation and impact work from the steel manufacturer have been collected and analyzed by the mathematical statistics method based on the reliability theory, and the partial factors for resistance of low-yield-point steels have been proposed. Also low-yieldpoint steel coupon specimens were tested by different cyclic loading programs, and the constitutive models under cyclic loading were proposed and calibrated. Furthermore, the lowcycle fatigue behavior of low-yield-point steels were studied by tests, and the test results can be used to predict the cyclic loading safety and life of low-yield-point steel components in steel structures under earthquakes.

show abstract

Material properties and partial factors for resistance of high-strength steels in China

Cited by 71 publications

References 17 publications

Research advances in HSS structures at Tsinghua University and codification of the design specification

Research advances in HSS structures at Tsinghua University and codification of the design specification

Fire Resistance Performance Analysis of High Strength Steel Q550 Columns Under Axial Compression

12.23: Research on low‐yield‐point steels in Tsinghua University

Contact Info

Product

Resources

About