|Table of Contents|

Experimental Study on Bending Capacity and Calculation Method of Ultra-high Performance Concrete Slab(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2019年03期
Page:
28-36
Research Field:
Publishing date:

Info

Title:
Experimental Study on Bending Capacity and Calculation Method of Ultra-high Performance Concrete Slab
Author(s):
HUANG Fu-yun1; 2;  CHEN Han-lun1; 2;  YANG Fang-fang1; 2;  LIN Chao1; 2;  CHEN Bao-chun1; 2
(1. Fujian Key Laboratory on Multi-disasters Prevention and Mitigation in Civil Engineering, Fuzhou University, Fuzhou 350108, Fujian, China; 2. College of Civil Engineering, Fuzhou University, Fuzhou 350108, Fujian, China)
Keywords:
ultra-high performance concrete;  fiber concrete slab;  bending bearing capacity;  parametric analysis
PACS:
TU473
DOI:
-
Abstract:
To promote the practical application of ultra-high performance concrete(UHPC)slab in China, the bending bearing capacity of UHPC slab and ordinary reinforced concrete slab were tested, the bearing capacity of UHPC slab from several aspects was analyzed, and the results were compared with those of the same grade traditional one. The results indicate that the failure process of UHPC slab can be divided into elastic stage yield stage and failure stage, when the maximum crack is 0.1 mm, the load can be considered as the crack load. The bending failure process of UHPC slab is ductile failure, which meets the needs of practical engineering. The ultimate elastic load of UHPC slab is 220% of that of the same grade reinforced concrete slab, that is, the crack resistance and bearing capacity of UHPC slab are better than those of traditional one, and UHPC slab has better durability and applicability under the conventional load. The UHPC slab can still work normally when the ordinary reinforced concrete slab is destroyed, UHPC slab can completely replace the ordinary reinforced concrete slab in bearing capacity. The parameter analysis results from the finite element simulation indicate: it’s better to control the content of steel fiber(mass fraction)between 1.5%-2.5%, the thickness is between 30-50 mm, the materials grade is between U120-U160. The simplified formula for calculating the bending bearing capacity of the UHPC slab has a good precision, which can provide a reference for the engineering practice and the relevant specifications.

References:


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Last Update: 2019-05-23