Abstract
Based on the existing UHPC material parameters, masonry parameters and the application of reinforcement projects on the market, ABAQUS's unique concrete plastic damage (CDP) constitutive model can be used for concrete and other brittle materials. The constitutive parameters are obtained by curve fitting experiments by other scholars, and this paper has carried out appropriate calibrations. Numerical analysis is the pseudo-static loading form of UHPC reinforced low-strength masonry walls. Through the analysis and simulation of the hysteresis curve, skeleton curve, equivalent plastic strain Moire diagram, peak stress, strain and other parameters, the changes in shear resistance before and after UHPC reinforced masonry walls are evaluated.
Highlights
According to statistics, there are a large number of old masonry buildings in many parts of the world, some of which have not reached the service life but have safety problems
1) This article discusses the application of ultra-high performance concrete (UHPC) in bridge reinforcement projects
The concrete damage plastic model is effective in the analysis of the failure mechanism of masonry and UHPC components
Summary
There are a large number of old masonry buildings in many parts of the world, some of which have not reached the service life but have safety problems. It was found that the bearing capacity was 28 % higher than the intact I-beam and 473 % higher than the corroded I-beam[5]; Zhang Yang et al [6] used UHPC to reinforce the old reinforced concrete (RC) structure, which has been verified by experiments to greatly improve its crack resistance, waterproofing and durability. This paper simulates the reinforcement of low-strength brick walls based on the UHPC parameters provided by a company, and designs the ABAQUS finite element simulation numerical analysis model to verify and analyze it, so as to provide actual engineering as a reference
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