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学者姓名：BRUNO BRISEGHLLA
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The research features a series of tests on two types of Ultra-High Performance Concrete (UHPC, 150 and 180 N/mm2) with polypropylene (PP) fibres (0.27% of volume) and variable content of steel (S) fibres (0% to 1.92%), aimed at investigating the residual mechanical properties of the material after high temperature exposure. The results are compared to available research on small UHPC specimens exposed to high temperatures, with PP fibres from 0.03% to 2%, and S fibres from 0 to 3% of volume. The results demonstrate that UHPCs need hybrid fibre reinforcement (PP + S) to withstand high temperatures, and that the residual strength increases after 200 ℃ exposure, at all steel fibre dosages; this is in line with literature. Available research also shows that strength loss is possible in hot conditions, as found in the present research, while PP fibres alone do not always prevent the occurrence of spalling in small UHPC samples. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.
Keyword ：
High performance concrete High performance concrete Polypropylenes Polypropylenes Shotcreting Shotcreting Spalling Spalling Steel fibers Steel fibers Steel testing Steel testing
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| GB/T 7714 | Sciarretta, Francesca , Fava, Stefano , Francini, Marco et al. Research on the High Temperature Behaviour of Ultra-High-Performance Concrete (UHPC) with Polypropylene (PP) and Steel Fibres [C] . 2024 : 681-693 . |
| MLA | Sciarretta, Francesca et al. "Research on the High Temperature Behaviour of Ultra-High-Performance Concrete (UHPC) with Polypropylene (PP) and Steel Fibres" . (2024) : 681-693 . |
| APA | Sciarretta, Francesca , Fava, Stefano , Francini, Marco , Ponticelli, Luca , Caciolai, Mauro , Briseghella, Bruno et al. Research on the High Temperature Behaviour of Ultra-High-Performance Concrete (UHPC) with Polypropylene (PP) and Steel Fibres . (2024) : 681-693 . |
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Nonlinear response time-history analyses are used in well-known seismic performance assessment methods such as Incremental Dynamic Analysis, Multi-Stripes Analysis and Cloud Method to describe the relationship between chosen Damage Measure versus Intensity Measure. Numerous researches have presented simplified procedures or nonlinear static procedures to develop fragility over the last two decades. In NSPs, pushover analysis is used to assess the system capacity, and response spectra quantify the seismic demand. In addition to the known ones, Incremental Modal Pushover Analysis (IMPA) is a novel nonlinear static procedure that has been proposed in recent years and is used in this study to advance an IM-based fragility estimation. The accuracy and effectiveness of various vulnerability assessment methods are investigated by comparing fragility curves obtained from MPA-based Cloud Analysis, IMPA, Cloud Analysis to IDA fragility curves. The results from two relatively small bins of record motions differing by ranges of Joyner-Boore Distance and are scattered across a range of Magnitude are presented. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.
Keyword ：
Damage detection Damage detection Modal analysis Modal analysis Nonlinear analysis Nonlinear analysis Seismology Seismology
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| GB/T 7714 | Contiguglia, Carlotta Pia , Pelle, Angelo , Lavorato, Davide et al. Seismic Fragility Curves: A Comparison Among Nonlinear Static and Dynamic Analysis Procedures [C] . 2024 : 52-65 . |
| MLA | Contiguglia, Carlotta Pia et al. "Seismic Fragility Curves: A Comparison Among Nonlinear Static and Dynamic Analysis Procedures" . (2024) : 52-65 . |
| APA | Contiguglia, Carlotta Pia , Pelle, Angelo , Lavorato, Davide , Briseghella, Bruno , Nuti, Camillo . Seismic Fragility Curves: A Comparison Among Nonlinear Static and Dynamic Analysis Procedures . (2024) : 52-65 . |
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The research focused on the design of a curved shell-supported footbridge using a form-finding algorithm and genetic optimization. The bridge was shaped through a parametric design code, which also allows optimization based on finite element structural analysis. The constrained optimization involved a mono-objective approach aided by penalty functions to control the maximum tension utilization of the concrete material. The objective was to find the optimal bridge shape in terms of minimizing displacement under vertical and horizontal loads, with both the topological optimization of the positions of the bridge supports and the optimization of the control points of the Bezier curve describing the form of the curved deck as key parameters. The results provide insights into effective techniques for optimizing the design of curved shell-supported footbridges subjected to earthquake loads. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.
Keyword ：
Conceptual design Conceptual design Constrained optimization Constrained optimization Curve fitting Curve fitting Footbridges Footbridges Seismic design Seismic design Shape optimization Shape optimization Shells (structures) Shells (structures) Structural optimization Structural optimization Topology Topology
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| GB/T 7714 | Fenu, Luigi , Hosseini, Alireza , Punzo, Stefano et al. Form-finding with Restraint Topology Optimization of a Curved Shell-Supported Footbridge under Vertical and Horizontal Loads [C] . 2024 : 867-876 . |
| MLA | Fenu, Luigi et al. "Form-finding with Restraint Topology Optimization of a Curved Shell-Supported Footbridge under Vertical and Horizontal Loads" . (2024) : 867-876 . |
| APA | Fenu, Luigi , Hosseini, Alireza , Punzo, Stefano , Briseghella, Bruno , Giaccu, Gian Felice . Form-finding with Restraint Topology Optimization of a Curved Shell-Supported Footbridge under Vertical and Horizontal Loads . (2024) : 867-876 . |
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This study explores parametric design and optimization to improve a reciprocal frame bridge’s structural efficiency while preserving its historical and architectural significance. The research aims to identify an optimal configuration that minimizes steel requirements for a self-supported bridge while satisfying structural requirements. This objective was achieved by modifying the bridge’s geometrical parameters using a genetic algorithm for mono-objective optimization. A finite element structural analysis was conducted to evaluate the maximum stress in the material, with a penalty function used to ensure structural safety. The parametric design software allowed for efficient and precise optimization of the bridge design. The results demonstrate that the proposed optimization method reduces material usage while maintaining the bridge’s original structural concept of traditional wooden Chinese bridge, validating the approach’s effectiveness for future design of reciprocal frame bridges. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.
Keyword ：
Bridges Bridges Conceptual design Conceptual design Genetic algorithms Genetic algorithms Geometry Geometry Shape optimization Shape optimization Structural optimization Structural optimization
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| GB/T 7714 | Hosseini, Alireza , Briseghella, Bruno , Fenu, Luigi et al. Parametric Design and Optimization of Reciprocal Frame Bridges [C] . 2024 : 877-887 . |
| MLA | Hosseini, Alireza et al. "Parametric Design and Optimization of Reciprocal Frame Bridges" . (2024) : 877-887 . |
| APA | Hosseini, Alireza , Briseghella, Bruno , Fenu, Luigi , Giaccu, Gian Felice , Punzo, Stefano . Parametric Design and Optimization of Reciprocal Frame Bridges . (2024) : 877-887 . |
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A new nanocomposite g-C3N4/CoAl-LDH was synthesized and implemented to make alkali-activated steel slagbased photocatalytic pervious concrete (ASSPPC). The water permeability, compressive strength, microstructure, and NOx degradation ability of ASSPPC were investigated. The results show that at lower dosages (1 wt% and 3 wt%), the spherical structure facilitates excellent dispersion of g-C3N4/CoAl-LDH within the matrix, which leads to reduced matrix porosity, resulting in improved compressive strength and reduced water permeability in ASSPPC. Compared to control previous concrete, the compressive strength of ASSPPC with 1 wt% g-C3N4/CoAl- LDH increased by 6.3%, and water permeability of which decreased by 15.4%, respectively. However, at higher dosages (5 wt%), g-C3N4/CoAl-LDH tends to agglomerate, causing lower hydration degree and higher matrix porosity. Moreover, owing to the remarkable alkali resistance of g-C3N4/CoAl-LDH, ASSPPC with this photocatalyst only marginally decreases its NOx degradation ability as the curing age increases. When considering water permeability, compressive strength, and NOx degradation ability, ASSPPC with 3 wt% g-C3N4/CoAl-LDH demonstrates optimal performance, which gives both compressive strength and water permeability equivalent to pervious concrete without photocatalyst while exhibiting a NOx degradation rate 0.58 times higher than that of ASSPPC with 3 wt% g-C3N4.
Keyword ：
Alkali-activation Alkali-activation Ground granulated blast furnace slag Ground granulated blast furnace slag NOx degradation NOx degradation Pervious concrete Pervious concrete Steel slag Steel slag
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| GB/T 7714 | Chen, Shanghong , Xiong, Xiaoli , Yang, Zhengxian et al. The microstructure and NOx degradation ability of alkali-activated steel slag-based pervious concrete doped with g-C3N4/CoAl-LDH [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 419 . |
| MLA | Chen, Shanghong et al. "The microstructure and NOx degradation ability of alkali-activated steel slag-based pervious concrete doped with g-C3N4/CoAl-LDH" . | CONSTRUCTION AND BUILDING MATERIALS 419 (2024) . |
| APA | Chen, Shanghong , Xiong, Xiaoli , Yang, Zhengxian , Lin, Jiafu , Zhang, Jianfu , Briseghella, Bruno et al. The microstructure and NOx degradation ability of alkali-activated steel slag-based pervious concrete doped with g-C3N4/CoAl-LDH . | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 419 . |
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This study presents the structural design and lifecycle analysis of an orthotropic steel deck (OSD) bascule bridge in Viareggio (Italy), considering various operational states and constraints. The analysis varied the bridge's opening angle in 15-degree increments from 0 to 90 degrees, using two steel grades, S355 and S450, by comparing hydraulic or electro-mechanically driven activation mechanisms. The findings reveal that as the static model transitions from pinned-pinned to cantilevered when the bridge is opened, the structural demand for bending moment and shear force increases, with a maximum of nearly 15°–30°. At the same time, axial forces shift from tensile to compressive. Structural design has been carried out using higher grade steel (S450), which has led to a 17.17% mass reduction, cost savings of 3.4%, and a notable decrease in CO2 emissions by 16%. This proves that despite using higher-grade steel characterized by more significant CO2 emissions, the mass reduction associated with the refined design leads to an overall lower environmental footprint. This fact underscores the importance of selecting proper steel grades for steel to achieve an optimal trade-off between CO2 emissions and mass reduction. © 2024 The Author(s)
Keyword ：
Activation analysis Activation analysis Bascule bridges Bascule bridges Bridge decks Bridge decks Carbon dioxide Carbon dioxide Chemical activation Chemical activation Economic and social effects Economic and social effects Life cycle Life cycle Structural analysis Structural analysis
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| GB/T 7714 | Maiorana, Emanuele , Aloisio, Angelo , Fofou, Adrian Bognou et al. Structural design and lifecycle analysis of an orthotropic steel deck bascule bridge [J]. | Structures , 2024 , 63 . |
| MLA | Maiorana, Emanuele et al. "Structural design and lifecycle analysis of an orthotropic steel deck bascule bridge" . | Structures 63 (2024) . |
| APA | Maiorana, Emanuele , Aloisio, Angelo , Fofou, Adrian Bognou , Briseghella, Bruno . Structural design and lifecycle analysis of an orthotropic steel deck bascule bridge . | Structures , 2024 , 63 . |
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This paper studied the axial compression behavior of the steel tube reinforced concrete (STRC) column, which consisted of inner CFST and outer RC components. Ten specimens, including seven STRC columns, two RC columns, and one CFST column were tested. The test parameters included the CFST area ratio (inner CFST to the whole section), longitudinal rebar ratio and stirrup space. The test results showed that the compressive behavior of STRC column with a CFST area ratio of 0.04 was close to that of the RC column, and the compressive behavior of the STRC column with a CFST area ratio of 0.13 was between that of the RC column and CFST column. The finite element (FE) models were developed and verified by test results to investigate the effects of longitudinal rebar ratio and stirrup space on the axial compression behavior of STRC column with various CFST area ratios. The load distribution between inner CFST and outer RC components was analyzed. The FE results showed that the effects of the longitudinal rebar ratio on the ultimate load of STRC column were related to the CFST area ratio. The accuracy and applicability of the five methods suggested by codes for predicting the ultimate load of STRC column were discussed based on the test and FE results.
Keyword ：
Axial compression Axial compression CFST area ratio CFST area ratio Finite element Finite element Longitudinal rebar ratio Longitudinal rebar ratio Steel tube reinforced concrete Steel tube reinforced concrete Ultimate load Ultimate load
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| GB/T 7714 | He, Fuyun , Li, Cong , Chen, Baochun et al. Axial compression behavior of steel tube reinforced concrete column [J]. | ENGINEERING STRUCTURES , 2024 , 303 . |
| MLA | He, Fuyun et al. "Axial compression behavior of steel tube reinforced concrete column" . | ENGINEERING STRUCTURES 303 (2024) . |
| APA | He, Fuyun , Li, Cong , Chen, Baochun , Briseghella, Bruno , Xue, Junqing . Axial compression behavior of steel tube reinforced concrete column . | ENGINEERING STRUCTURES , 2024 , 303 . |
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The development of probabilistic corrosion hazard maps for reinforced concrete infrastructure exposed to airborne chlorides in coastal regions is addressed in the present work, with special attention to bridges. The methodology developed in this study consists of three steps. Initially, spatial distribution, construction year, and main features of the existing infrastructure are examined together with the general characteristics of the study area. The second step deals with the elaboration of relevant environmental data, including the direction and height of sea waves, sea salinity, temperature, relative humidity, rainfall, speed and direction of wind, and chloride deposition rates. Corrosion hazard maps are obtained next, wherein the corrosion current density is selected as an intensity measure. Particularly, they are elaborated for an assigned probability of exceedance given the exposure time window and concrete mixture. The presented methodology is applied to develop probabilistic corrosion hazard maps for reinforced concrete bridges exposed to the marine atmosphere at Oahu Island (Hawaii, United States). For this case-study, it is also discussed the correlation between the actual condition rating of the existing concrete bridges and the estimated corrosion hazard levels.
Keyword ：
Bridge Bridge chloride chloride coastal region coastal region condition rating condition rating corrosion corrosion hazard hazard pitting corrosion pitting corrosion reinforced concrete reinforced concrete
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| GB/T 7714 | Quaranta, Giuseppe , Giaccu, Gian Felice , Briseghella, Bruno et al. Probabilistic corrosion hazard maps for reinforced concrete infrastructure in coastal regions [J]. | STRUCTURE AND INFRASTRUCTURE ENGINEERING , 2024 . |
| MLA | Quaranta, Giuseppe et al. "Probabilistic corrosion hazard maps for reinforced concrete infrastructure in coastal regions" . | STRUCTURE AND INFRASTRUCTURE ENGINEERING (2024) . |
| APA | Quaranta, Giuseppe , Giaccu, Gian Felice , Briseghella, Bruno , Nuti, Camillo . Probabilistic corrosion hazard maps for reinforced concrete infrastructure in coastal regions . | STRUCTURE AND INFRASTRUCTURE ENGINEERING , 2024 . |
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With the global construction industry in full swing and the desperate quest to reduce energy consumption and greenhouse gas emissions, there is a growing demand for new technologies to manufacture lightweight concrete structures. This work focuses on foam concrete (FC) and presents the initial results of current experimental campaigns. The purpose of this paper is to investigate the relationship between the flow, mechanical strength, and elastic modulus of the samples and the different dry densities, and the fine aggregate sizes. All samples were cured in water to maintain a constant temperature and humidity environment. The target density of the specimens ranged from 1350 to 1600 kg/m3 with two grades of fine aggregate size. The findings indicate that while the increase in dry density reduces the flow of the foamed concrete specimens, the increase in fine aggregate diameter greatly improves the flowability of the foamed concrete when compared to the control group. Furthermore, the mechanical strength of foamed concrete was enhanced by smaller fine sand gradation because of the presence of more refined pore structure and improved bubble stability. In particular, the foamed concrete specimen with finer sand particle size had a maximum compressive strength value of around 45 MPa and an elastic modulus of about 18 GPa at a dry density of about 1600 kg/m3. © 2024 IEEE.
Keyword ：
foamed concrete foamed concrete grain size effect grain size effect mechanical behavior mechanical behavior slump slump structural lightweight concrete structural lightweight concrete
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| GB/T 7714 | Shi, P. , Falliano, D. , Celi, A.B. et al. Workability and Mechanical Properties of Structural Foamed Concretes with Different Dry Densities, and Fine Sand Grain Sizes: Preliminary Study [未知]. |
| MLA | Shi, P. et al. "Workability and Mechanical Properties of Structural Foamed Concretes with Different Dry Densities, and Fine Sand Grain Sizes: Preliminary Study" [未知]. |
| APA | Shi, P. , Falliano, D. , Celi, A.B. , Yang, Z. , Marano, G.C. , Briseghella, B. . Workability and Mechanical Properties of Structural Foamed Concretes with Different Dry Densities, and Fine Sand Grain Sizes: Preliminary Study [未知]. |
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| GB/T 7714 | Briseghella, Bruno . The Editorial [J]. | PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-STRUCTURES AND BUILDINGS , 2024 , 177 (3) : 193-194 . |
| MLA | Briseghella, Bruno . "The Editorial" . | PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-STRUCTURES AND BUILDINGS 177 . 3 (2024) : 193-194 . |
| APA | Briseghella, Bruno . The Editorial . | PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-STRUCTURES AND BUILDINGS , 2024 , 177 (3) , 193-194 . |
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