Experimental analysis of crack development of an UHPC wall element under shear loading

[摘要] UHPC (Ultra High-Performance Concrete) is an innovative material that enables design of lightweight and structurally optimized, long-lasting structures. In this paper is presented experimental analysis of precast webs of "butterfly web" box-girder bridge on scaled-down specimens. Pretensioned beam specimens were analysed in 2 variants - with continuous web and with lightened web. Based on the experimental results are both variants compared and are presented numerical and material models suitable for UHPC modelling in software SCIA Engineer. In SCIA Engineer is implemented modified Mazarz material damage model which is applicable for material with residual strength typical for FRC and UHPFRC.

[发布机构] Department of Concrete and Masonry Structures, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7/2077, Praha 6; 166 29, Czech Republic^1;SCIA CZ S.r.o., Evropská 2591/33d, Praha 6; 160 00, Czech Republic^2

[学科分类] 土木及结构工程学

[关键词] Crack development;Experimental analysis;Innovative materials;Material damage model;Material models;Pretensioned beams;Residual strength;Ultra high performance concretes