With the improvement of smelting process of stainless steel, stainless steel has great advantages in economy, rigidity and durability, so it has been widely used in recent years. However, the properties of stainless steel rebar are very different from those of traditional steel rebar. The stainless steel rebar has no obvious yield strength, and its ductility is excellent. It is essential to determine whether stainless steel rebar can be used in building structures. The bond behavior between stainless rebar and concrete is the basic issue to study before the application of stainless steel. Therefore, the effects of concrete strength, diameter of reinforcement, relative thickness of protective layer, anchorage length of stainless steel bar and casting method on the bond force between the stainless steel bar and concrete were analyzed through central pulling tests of 39 specimens. The results showed that the stainless steel rebar has high bond force with concrete and the empirical formula of bond force between stainless steel rebar and concrete was established based on the regression analysis of the experimental data.
This paper investigates and analyzes the risk factors of large-scale complex bridge construction through questionnaire survey and Delphi method, and obtains the risk factors and basic data that affect the construction of large complex bridges. On this basis, according to the principle of factor analysis, using SPSS V21.0 software to statistically analyze the basic data, the main factors affecting the construction risk of large complex bridges and their importance index are obtained, which provide a basis for the development of control decisions. The application of the example shows that the method given in this paper is simple in operation and the result is clear. According to the size of the factor importance index, measures can be taken to deal with major risks to ensure the smooth construction of the bridge.
The use of stainless steel bars can improve the durability and sustainability of building materials. Through the static performance test, this research analyzes the failure pattern and bearing performance of bias stainless steel reinforced concrete (SSRC) column. The influence of reinforcement ratio of longitudinal bars and eccentricity on the mechanical performance of specimens was studied. Different constitutive models of stainless steel bars were used to calculate the ultimate bearing capacity of the section of the column under eccentric compression column. Based on the experimental results, a method to modify the expression of the design specification is proposed. And, the results were compared with the test results. The results showed that the damage patterns and failure modes of SSRC columns are essentially the same as those of traditional reinforced concrete columns. The bearing capacity of SSRC columns rises with the increase in the longitudinal reinforcement ratio, and the ductility of the specimens is enhanced. The ultimate load of the specimen decreases with the rise in eccentricity but the deflection increases gradually. The strain distribution of the mid-span section of the SSRC column conforms to the plane section assumption. The bearing capacity of the specimen can be analyzed by referring to the calculation method of the specification, and some parameters in the calculation formula of the specification are modified to adapt to the design and calculation of the SSRC column.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.