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学者姓名：BRUNO BRISEGHLLA
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矮塔斜拉桥通常采用对称悬臂法施工,客观条件可能导致该方法无法采用,需要研究非对称悬臂施工的可行性.文章针对双塔双索面预应力混凝土矮塔斜拉桥开展实桥监测,建立有限元模型,分析合理成桥状态和合理施工状态.考虑背景工程无法采用对称悬臂法的实际情况,基于合理施工状态提出边跨现浇段非对称悬臂施工的2种方案,对比采用2种方案完成边跨现浇段施工后对合理施工状态下主梁的挠度、应力及斜拉索索力的影响.结果表明:采用应力平衡法计算成桥恒载弯矩可行域,并以此为约束条件利用基于影响矩阵法原理的未知荷载系数法可计算合理成桥索力;利用考虑施工阶段的未知荷载系数法计算合理初张拉索力及二次张拉索力,可得到合理施工状态;与方案1相比,采用方案2的主梁最大挠度更小且分布更合理,边跨无索区主梁上缘拉应力更小,斜拉索索力分布更均匀;方案2对矮塔斜拉桥的合理施工状态影响较小,最终可达到合理成桥状态.
Keyword ：
有限元分析 有限元分析 未知荷载系数法 未知荷载系数法 桥梁工程 桥梁工程 矮塔斜拉桥 矮塔斜拉桥 非对称悬臂施工 非对称悬臂施工
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| GB/T 7714 | 郭维强 , Bruno BRISEGHELLA , 陈权 et al. 边跨非对称悬臂施工对矮塔斜拉桥合理施工状态影响研究 [J]. | 合肥工业大学学报（自然科学版） , 2025 , 48 (1) : 136-144 . |
| MLA | 郭维强 et al. "边跨非对称悬臂施工对矮塔斜拉桥合理施工状态影响研究" . | 合肥工业大学学报（自然科学版） 48 . 1 (2025) : 136-144 . |
| APA | 郭维强 , Bruno BRISEGHELLA , 陈权 , 薛俊青 , Camillo NUTI . 边跨非对称悬臂施工对矮塔斜拉桥合理施工状态影响研究 . | 合肥工业大学学报（自然科学版） , 2025 , 48 (1) , 136-144 . |
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This study investigates the optimization of gridshell dome shapes using seismic design demand parameters as the primary objective function. The innovative methodology integrates shape optimization with seismic analysis, deviating from traditional approaches that separate geometric design and seismic performance enhancement. By integrating computational methods, utilizing parametric modeling through Grasshopper, and structural analysis with OpenSees, the framework employs a genetic algorithm for optimization. Nonlinear time-history analysis, incorporating material and geometric nonlinearities, reveals that the optimal shape of the dome is significantly influenced by its seismic response. The results show that the optimal dome shape can vary substantially based on seismic performance criteria, indicating a dynamic interplay between structural form and seismic forces. Moreover, the optimal shape can be further influenced by implementing a supplementary damping system. In this case, both the gridshell shape and seismic dampers arrangement require adjustments to achieve optimal seismic performance. These findings highlight the critical role of integrated seismic analysis in shaping optimization, emphasizing that the ideal dome geometry is not static but evolves in response to seismic demands and damping configurations. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.
Keyword ：
Domes Domes Parametric devices Parametric devices Seismic design Seismic design Seismic response Seismic response Shape optimization Shape optimization Structural analysis Structural analysis Structural dynamics Structural dynamics Structural optimization Structural optimization
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| GB/T 7714 | Hosseini, Alireza , Briseghella, Bruno , Giaccu, Gian Felice et al. Optimizing Gridshell Dome Shapes Based on Seismic Response: The Impact of Dynamic Analysis and Supplementary Damping Devices [C] . 2025 : 43-52 . |
| MLA | Hosseini, Alireza et al. "Optimizing Gridshell Dome Shapes Based on Seismic Response: The Impact of Dynamic Analysis and Supplementary Damping Devices" . (2025) : 43-52 . |
| APA | Hosseini, Alireza , Briseghella, Bruno , Giaccu, Gian Felice , Fenu, Luigi . Optimizing Gridshell Dome Shapes Based on Seismic Response: The Impact of Dynamic Analysis and Supplementary Damping Devices . (2025) : 43-52 . |
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Ultra-High Performance Fiber Reinforced Concrete (UHPFRC) is a material with superior mechanical characteristics which are attributed to the use of a high-volume fraction of steel fibers and an ultra-high strength cementitious matrix. One of the key challenges of the use of UHPFRC is its increased cost and the scatter of the mechanical characteristics which are both attributed to the addition of a high-volume fraction of steel fibers. A suitable fiber orientation method could have significant benefits towards the improvement of the mechanical performance of UHPFRC. This paper is focused on a systematic study of the effect of electromagnetic field and chute fiber orientation with vibration table methods on the tensile strength of UHPFRC with various steel fiber volume fractions (Vf: 1 %, 2 %, and 3 %). In addition to the mechanical testing, X-ray CT scan image analyses were conducted to quantitatively evaluate fiber orientation. The 2D slices produced by the X-ray CT scan image analyses clearly show the effectiveness of the steel fiber orientation method and showed potential for further improvement. The results of this research show that the application of suitable orientation methods can lead to significant reduction of the required volume fraction of steel fibers and subsequent cost reduction, as the results of UHPFRC with 3 % and 2 % fibers lead to similar results to the UHPFRC with 2 % and 1 % oriented steel fibers respectively. Also, a numerical tensile constitutive model was developed for UHPFRC with oriented fibers, based on the experimental results. The proposed model can facilitate the extensive use of UHPFRC as it be used by practitioners for the analysis and design of UHPFRC element/structures.
Keyword ：
Concrete Concrete Constitutive model Constitutive model Fiber orientation Fiber orientation Mechanical property Mechanical property Optimal design Optimal design Steel fiber Steel fiber Ultra-High Performance Fiber Reinforced Ultra-High Performance Fiber Reinforced X-ray CT X-ray CT
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| GB/T 7714 | Xue, Junqing , Mao, Shengrong , Cacciola, Pierfrancesco et al. Improving the mechanical performance of UHPFRC using fiber orientation: Experimental investigation, microstructural analysis, and numerical modeling [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 476 . |
| MLA | Xue, Junqing et al. "Improving the mechanical performance of UHPFRC using fiber orientation: Experimental investigation, microstructural analysis, and numerical modeling" . | CONSTRUCTION AND BUILDING MATERIALS 476 (2025) . |
| APA | Xue, Junqing , Mao, Shengrong , Cacciola, Pierfrancesco , Contento, Alessandro , Lampropoulos, Andreas , Nicolaides, Demetris et al. Improving the mechanical performance of UHPFRC using fiber orientation: Experimental investigation, microstructural analysis, and numerical modeling . | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 476 . |
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| GB/T 7714 | Briseghella, Bruno . The Editorial [J]. | PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-STRUCTURES AND BUILDINGS , 2025 , 178 (3) : 229-230 . |
| MLA | Briseghella, Bruno . "The Editorial" . | PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-STRUCTURES AND BUILDINGS 178 . 3 (2025) : 229-230 . |
| APA | Briseghella, Bruno . The Editorial . | PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-STRUCTURES AND BUILDINGS , 2025 , 178 (3) , 229-230 . |
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This paper introduces a design methodology to enhance the seismic response of gridshells by simultaneously optimizing their shapes and the configuration of viscoelastic dampers. While viscoelastic dampers effectively reduce seismic responses, their impact on gridshell geometry has received limited attention. The proposed framework integrates damper placement into the initial design stage to address this gap, unlike conventional approaches that treat geometry and damper design separately. Leveraging parametric geometric and structural modeling, combined with a genetic algorithm, the framework utilizes a multi-phase fitness function derived from static and dynamic analyses, accounting for damping effects and material and geometric nonlinearities. The findings reveal that, as the number of dampers increases, optimized gridshells tend to adopt more elliptical shapes while achieving substantial reductions in both maximum displacement (exceeding 50 % in some cases) and thrust forces (up to 40 %), with the effect being more pronounced in mid-rise domes. Notably, even configurations with as few as 32 dampers can yield satisfactory seismic performance. Overall, locally symmetric damper layouts are recommended. The proposed methodology underscores the benefit of integrating damper placement with shape optimization during the early design phase, enabling adaptable applications to other structural systems and supporting more informed performance-based design decisions.
Keyword ：
Gridshell Gridshell Parametric design Parametric design Seismic performance Seismic performance Shape optimization Shape optimization Viscoelastic damper Viscoelastic damper
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| GB/T 7714 | Hosseini, Alireza , Briseghella, Bruno , Giaccu, Gian Felice et al. Integrated design framework for optimizing shape and Damper placement in steel gridshells under seismic loads [J]. | JOURNAL OF BUILDING ENGINEERING , 2025 , 112 . |
| MLA | Hosseini, Alireza et al. "Integrated design framework for optimizing shape and Damper placement in steel gridshells under seismic loads" . | JOURNAL OF BUILDING ENGINEERING 112 (2025) . |
| APA | Hosseini, Alireza , Briseghella, Bruno , Giaccu, Gian Felice , Fenu, Luigi . Integrated design framework for optimizing shape and Damper placement in steel gridshells under seismic loads . | JOURNAL OF BUILDING ENGINEERING , 2025 , 112 . |
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Ultra-high-performance concrete (UHPC) is renowned for its exceptional strength and durability, but the undesirable high material cost due to the considerable expense of reinforcing steel fiber hinders its wide application. The incorporation of more sustainable and light synthetic fibers presents a promising avenue for lowering the price and weight of UHPC while affecting the rheological and hardened behavior of UHPC. This paper conducts a comprehensive review of the key parameters of synthetic fibers, including content, aspect ratio, and surface properties, and their impacts on the fresh properties, mechanical performance, durability, and volume stability of UHPC. Particular emphasis is placed on the early and long-term performance of UHPC. Additionally, the sustainability of UHPC with various types of synthetic fibers is compared. By delving into these aspects, this study aims to furnish a constructive reference for engineers and decisionmakers regarding the utilization of synthetic fibers in UHPC to achieve optimal early and longterm performance.
Keyword ：
Ductility Ductility Durability Durability Sustainability Sustainability Synthetic fibers Synthetic fibers UHPC UHPC Volume stability Volume stability
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| GB/T 7714 | Yang, Zhengxian , Zheng, Zelong , Xu, Pu et al. Effect of synthetic fibers on early and long-term performance of UHPC: A review [J]. | JOURNAL OF BUILDING ENGINEERING , 2025 , 101 . |
| MLA | Yang, Zhengxian et al. "Effect of synthetic fibers on early and long-term performance of UHPC: A review" . | JOURNAL OF BUILDING ENGINEERING 101 (2025) . |
| APA | Yang, Zhengxian , Zheng, Zelong , Xu, Pu , Ning, Pingping , Hu, Jie , Petrou, Michael F. et al. Effect of synthetic fibers on early and long-term performance of UHPC: A review . | JOURNAL OF BUILDING ENGINEERING , 2025 , 101 . |
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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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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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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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