NSTL国家科技图书文献中心

1. Capacity assessment of uncorroded and corroded dapped-end beams by NLFE and strut-and-tie based methods NSTL国家科技图书文献中心

Beatrice Belletti | Biagio Calcavecchia ... - 《Structural concrete: Journal of the FIB》 - 2024,25(2) - 1275～1304 - 共30页 - 被引量：2

摘要：The verification of dapped-end beams degraded | by corrosion is a problem,especially for existing | bridges in service. This paper proposes a | nonlinearfinite element (NLFE) modeling procedure and a simple | strut-and-tie basedprocedure for predicting the

关键词： corrosion, dapped-end beams, nonlinear finite element, PARC_CL2.1, reinforced concrete, strut

2. Estimation of elastic modulus of recycle aggregate concrete based on hybrid and ensemble-hybrid approaches NSTL国家科技图书文献中心

Bing Qu - 《Structural concrete: Journal of the FIB》 - 2024,25(2) - 1364～1387 - 共24页 - 被引量：1

摘要：The utilization of recycled aggregate | concrete (RAC) within the constructionsector has the | potential to prevent irreversible harm to the environment | andreduce the depletion of natural resources. Nonetheless | , it is essential to scrutinizethe quality of RAC

关键词： elastic modulus of recycle aggregate concrete, ensemble and hybrid method, machine learning

3. Toward presenting an ensemble meta-model for evaluation of pozzolanic mixtures incorporating industrial by-products NSTL国家科技图书文献中心

Ali Ashrafian | Ali Behnood ... - 《Structural concrete: Journal of the FIB》 - 2024,25(2) - 1305～1323 - 共19页 - 被引量：1

摘要：Unsustainable development in the industry has | increased the challenge of properdisposal of industrial by | -products and has caused environmental pollution on alarge | scale. Furthermore, minimizing the carbon dioxide | emissions due to industrialand environmental activities is

关键词： compressive strength, concrete, ensemble meta-models, machine learning, supplementary

4. Development of fully precast lightweight steel-UHPC composite bridge NSTL国家科技图书文献中心

Xiangfeng He | Feixin Huang ... - 《Structural concrete: Journal of the FIB》 - 2024,25(2) - 773～776 - 共4页 - 被引量：7

摘要：Under positive bending moments, steel–concrete | compositebeams fully utilize the steel's tension andconcrete's | compression capacities. However, negativebending moments | cause steel compression and concretetension, leading | to premature cracking of concrete slabs.This

关键词： bridge engineering, fabricated structures, steel-UHPC composite beam, ultrahigh performance

5. Parameter priority of circular concrete-filled double-skin tubular slender beam-columns under eccentric loading NSTL国家科技图书文献中心

Trevor Neville Haas | Akuta Usongo Amika ... - 《Structural concrete: Journal of the FIB》 - 2024,25(4) - 2521～2535 - 共15页

摘要：This study aimed to determine the parameter | priority for the design optimizationof circular concrete | -filled double skin tubular (CFDST) slender | beamcolumnsunder eccentric loading. Experimental investigations | were conductedon four geometrically distinct CFDST

关键词： concrete-filled double-skin steel tubes | finite element modeling | parameter priority | tubular structures

6. Shear bond between existing concrete and high-strength fiber reinforced overlay: Influence of substrate strength and interface roughness NSTL国家科技图书文献中心

Fabiola Iavarone | Frank J. Vecchio ... - 《Structural concrete: Journal of the FIB》 - 2024,25(1) - 526～536 - 共11页 - 被引量：3

摘要：Bonded concrete overlays are widely used for | strengthening and repair ofconcrete members. The aim of a | concrete repair is to restore the load-carryingcapacity | and stiffness of a concrete member, and to extend | the service life of astructure. The bond between

关键词： experimental tests | high strength overlay | interface bond strength | steel fiber reinforcedconcrete | substrate strength | surface roughness

7. Modeling and probabilistic evaluation of repair strategies in the initiation phase of chloride-induced corrosion of the reinforcement of concrete structures NSTL国家科技图书文献中心

Karel Van Den Hende | Stef Helderweirt ... - 《Structural concrete: Journal of the FIB》 - 2024,25(2) - 1257～1274 - 共18页

摘要：Chloride ingress is a common issue in concrete | structures that can result inreinforcement corrosion. In | order to extend the lifetime of a structure | , severalpreventive repair methodologies are available, which reduce | the ingress ofchlorides. In this work, the

关键词： concrete repair, probabilistic modeling, chloride-induced corrosion

8. Bond performance of NSM FRP–concrete interfaces with epoxy under chloride-salt conditioned environments NSTL国家科技图书文献中心

Haixia Zhang | Xingwu Sun ... - 《Structural concrete: Journal of the FIB》 - 2024,25(3) - 2269～2288 - 共20页 - 被引量：1

摘要：Concrete in coastal areas is susceptible to | structural damage caused by corrosionand expansion of | reinforcement. Near-surface mounted (NSM) fiber | -reinforcedpolymer (FRP) bars have become effective for | strengthening damaged reinforcedconcrete structures. The

关键词： bonding performance, chloride-salt corrosion, degradation mechanism, microstructure, NSMFRP

9. Dynamical analysis of a 40 m span precast posttensioned concrete girder during lifting operations NSTL国家科技图书文献中心

Gabriel Henrique Arr... | Pablo Augusto Krahl ... - 《Structural concrete: Journal of the FIB》 - 2024,25(3) - 1658～1675 - 共18页

摘要：Cranes are employed to lift precast concrete | girders during their construction.Presently, there is no | recommendation for operational velocities during | girderassemblage, particularly for long elements; simultaneously | , several accidentshave been reported during the

关键词： dynamical analysis, impact factor, lateral stability, precast structures, transitory phases

10. Research on seismic response and dynamic lateral pressure of the silo model under dynamic interaction between granular materials and the silo wall NSTL国家科技图书文献中心

Daying Zhang | Qinghe Yang ... - 《Structural concrete: Journal of the FIB》 - 2024,25(3) - 1988～1998 - 共11页

摘要：The purpose is to study seismic response and | dynamic lateral pressure of thesilo wall with different | storage conditions under the earthquake. FEM wasused to | conduct dynamic time history analysis of the silo. The | seismic responseof the empty silo was smaller than that