THEORETICAL AND EXPERIMENTAL STUDY ON STEEL OPEN-WEB SANDWICH FLOOR WITH FLANGED CRUCIFORM SECTION SHEAR KEY

RUILIN SHEN; JIANCHUN XIAO; KEJIAN MA; JIAYI MAO; GUIPING LI; WEIYI ZENG; QIN WANG

doi:10.1590/1679-78255897

THEORETICAL AND EXPERIMENTAL STUDY ON STEEL OPEN-WEB SANDWICH FLOOR WITH FLANGED CRUCIFORM SECTION SHEAR KEY

Authors

RUILIN SHEN SPACE STRUCTURES RESEARCH CENTER, GUIZHOU UNIVERSITY, GUIYANG, CHINA / KEY LABORATORY OF STRUCTURAL ENGINEERING OF GUIZHOU PROVINCE, GUIYANG, CHINA HTTPS://ORCID.ORG/0000-0002-5017-1110
JIANCHUN XIAO SPACE STRUCTURES RESEARCH CENTER, GUIZHOU UNIVERSITY, GUIYANG, CHINA / KEY LABORATORY OF STRUCTURAL ENGINEERING OF GUIZHOU PROVINCE, GUIYANG, CHINA HTTPS://ORCID.ORG/0000-0003-2971-6144
KEJIAN MA SPACE STRUCTURES RESEARCH CENTER, GUIZHOU UNIVERSITY, GUIYANG, CHINA / KEY LABORATORY OF STRUCTURAL ENGINEERING OF GUIZHOU PROVINCE, GUIYANG, CHINA HTTPS://ORCID.ORG/0000-0002-1542-0054
JIAYI MAO GUIYANG CITY PEOPLE’S AIR DEFENSE OFFICE, GUIYANG, CHINA. HTTPS://ORCID.ORG/0000-0003-0416-0813
GUIPING LI SCHOOL OF CIVIL ENGINEERING, GUIZHOU INSTITUTE OF TECHNOLOGY, GUIYANG, CHINA. HTTPS://ORCID.ORG/0000-0002-5343-8781
WEIYI ZENG SPACE STRUCTURES RESEARCH CENTER, GUIZHOU UNIVERSITY, GUIYANG, CHINA / KEY LABORATORY OF STRUCTURAL ENGINEERING OF GUIZHOU PROVINCE, GUIYANG, CHINA HTTPS://ORCID.ORG/0000-0003-2867-8350
QIN WANG SPACE STRUCTURES RESEARCH CENTER, GUIZHOU UNIVERSITY, GUIYANG, CHINA / KEY LABORATORY OF STRUCTURAL ENGINEERING OF GUIZHOU PROVINCE, GUIYANG, CHINA HTTPS://ORCID.ORG/0000-0001-5372-1627

DOI:

https://doi.org/10.1590/1679-78255897

Abstract

STEEL OPEN-WEB SANDWICH FLOORS (SOSFS) HAVE BEEN APPLIED IN SEVERAL PIONEERING INDUSTRIAL AND PUBLIC BUILDINGS. THE TRADITIONAL SQUARE TUBE SHEAR KEY (STSK) OF THE STRUCTURE IS CHANGED INTO A FLANGED CRUCIFORM SECTION SHEAR KEY (FCSK) TO FURTHER IMPROVE THE BEARING CAPACITY OF SOSFS. A HALF-SCALE TEST MODEL IS DESIGNED. THE MANUFACTURING METHOD OF THIS NEW STRUCTURE IS INTRODUCED WITH MODEL PROCESSING TAKEN AS AN EXAMPLE. A GRADED STATIC LOADING TEST IS PERFORMED TO MEASURE DEFLECTION AND STRAIN. THE CALCULATION FORMULA OF THE INTERSECTION BEAM ANALOGY METHOD (IBAM) CONSIDERING THE INFLUENCE OF SHEAR STIFFNESS IS PROPOSED. A FINITE ELEMENT (FE) ANALYSIS WAS ALSO PERFORMED. THE RESULTS OF THE TEST, IBAM AND FE METHOD ARE COMPARED. THE MAXIMUM DEVIATION OF THE DEFLECTION OBTAINED BY THEM IS LESS THAN 5%, AND THE MAXIMUM STRAIN ERROR IS LESS THAN 7%. THESE FIGURES PROVE THAT ALL THREE METHODS HAVE HIGH PRECISION IN THE ELASTIC RANGE. COMPARED SOSFS USE DIFFERENT SHEAR KEY WITH THE SAME GRID SIZE AND THE SAME CHORDS, THE MAXIMUM MISES STRESS IS REDUCED BY 55.9% AND THE MAXIMUM DISPLACEMENT IS REDUCED BY 36.1%. THE NEW SHEAR KEY IMPARTS THE STRUCTURE WITH IMPROVED BEARING CAPACITY, INTEGRAL RIGIDITY, AND SAFETY STORAGE.

Downloads

Published

2020-03-17

Issue

Vol. 17 No. 3 (2020)

Section

Articles

License

Authors who publish with this journal agree to the following terms:

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License [CC BY] that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).