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学者姓名:范冰辉
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The through tied arch bridge is an arch-girder composite system with good robustness, however, there were still bridge collapse accidents caused by systematic failure of suspenders. Taking the Nanfang'ao Bridge as an example, the causes of the collapse of the bridge are preliminarily analyzed according to the film data retained on-site. The Simple-Jonhson-Cook material failure model in LS-DYNA is used to reverse the accident process. The analysis results show that the Nanfang'ao Bridge was located in a humid environment, which makes it easy for corrosion damage to occur to bridge components. At the same time, the lack of detailed management and maintenance was the structural external cause of the bridge's collapse. The serious damage to the suspenders themselves and the anchoring system was the structural internal cause of the systematic failure of the suspenders and the collapse of the bridge.
Keyword :
Bridge collapse analysis Bridge collapse analysis Collapse inversion Collapse inversion Finite-element modeling Finite-element modeling SimpleJonhson-Cook material failure model SimpleJonhson-Cook material failure model Through tied-arch bridge Through tied-arch bridge
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GB/T 7714 | Sun, Qi , Fan, Binghui , Chen, Ken et al. Inverse Analysis of Progressive Collapse of Through Tied-Arch Bridge Considering Suspenders Fracture [J]. | PROCEEDINGS OF ARCH 2023, VOL 1 , 2025 , 33 : 122-130 . |
MLA | Sun, Qi et al. "Inverse Analysis of Progressive Collapse of Through Tied-Arch Bridge Considering Suspenders Fracture" . | PROCEEDINGS OF ARCH 2023, VOL 1 33 (2025) : 122-130 . |
APA | Sun, Qi , Fan, Binghui , Chen, Ken , Song, Zhenwen , Zou, Jinqi , Chao, Pengfei . Inverse Analysis of Progressive Collapse of Through Tied-Arch Bridge Considering Suspenders Fracture . | PROCEEDINGS OF ARCH 2023, VOL 1 , 2025 , 33 , 122-130 . |
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The construction industry is considered one of the most hazardous industries. The accidents associated with construction equipment are a leading cause of fatalities in the U.S., with one-quarter of all fatalities in the construction industry due to equipment-related incidents, including collisions, struck-by events, and rollovers. While close collaboration among multiple equipment and humans is common, conventional collision alert mechanisms for equipment usually rely on distance sensors with static thresholds, often resulting in too many false alarms, causing drivers' ignorance. Considering the collaborative operation scenario, this research proposes and develops a dynamic-threshold alert system by recognizing hazardous events based on the types of nearby objects with their orientation or postures and their distances to the system carrier equipment based on image-based recognition and Sim2Real techniques. Two experiments were conducted, and the results show that the system successfully reduced a large number of false near-collision alarms for the collaboration scenarios. Although the accuracy of object recognition and image-based distance estimation is feasible for practical use, it is also easily degraded in the self-obstruction scenario or for equipment with large and movable parts due to incorrect recognition of the bounding boxes of the target objects.
Keyword :
equipment collision equipment collision image recognition image recognition Sim2Real Sim2Real YOLO YOLO
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GB/T 7714 | Dzeng, Ren-Jye , Fan, Binghui , Hsieh, Tian-Lin . Dynamic Collision Alert System for Collaboration of Construction Equipment and Workers [J]. | BUILDINGS , 2025 , 15 (1) . |
MLA | Dzeng, Ren-Jye et al. "Dynamic Collision Alert System for Collaboration of Construction Equipment and Workers" . | BUILDINGS 15 . 1 (2025) . |
APA | Dzeng, Ren-Jye , Fan, Binghui , Hsieh, Tian-Lin . Dynamic Collision Alert System for Collaboration of Construction Equipment and Workers . | BUILDINGS , 2025 , 15 (1) . |
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As a bridge structure with good robustness, through tied-arch bridge often has bridge collapse accidents caused by suspender failure. To study the collapse failure mechanism of through tied-arch bridge considering the systematic failure of suspenders, the importance of each suspender in the bridge is evaluated, and the most unfavorable suspender breaking condition of the bridge is judged. On this basis, based on a real multi-span tied-arch bridge, the failure path and failure mechanism of through tied-arch bridges with different structural types under the systematic failure of suspenders are studied, and the influencing factors of different failure mechanisms are compared and analyzed. The results show that for the through tied-arch bridge, the breaking of the short suspender has little effect on the damage of the remaining structure of the bridge. When the long suspender is broken, it is easy to cause the adjacent suspender force to exceed its structural redundancy and break. Under the most unfavorable suspender breaking condition, the failure of 4 pairs of suspenders can lead to the systematic failure of the remaining suspenders of a multi-span tied-arch bridge, resulting in the loss of all suspenders of the bridge, and there is no force transmission component between the arch rib and the bridge system, so that the bridge system and the arch rib have different degrees of damage.
Keyword :
Failure mechanism Failure mechanism Member significance factor Member significance factor Systematical suspender failure Systematical suspender failure Through tied-arch bridge Through tied-arch bridge
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GB/T 7714 | Sun, Qi , Fan, Binghui , Chen, Jingxing et al. Progressive Collapse and Dynamic Behavior of Through Tied-Arch Bridge Under Systematical Suspender Failure [J]. | PROCEEDINGS OF ARCH 2023, VOL 1 , 2025 , 33 : 131-140 . |
MLA | Sun, Qi et al. "Progressive Collapse and Dynamic Behavior of Through Tied-Arch Bridge Under Systematical Suspender Failure" . | PROCEEDINGS OF ARCH 2023, VOL 1 33 (2025) : 131-140 . |
APA | Sun, Qi , Fan, Binghui , Chen, Jingxing , Wang, Xiangrui , Chen, Ken , Wu, Kunhui et al. Progressive Collapse and Dynamic Behavior of Through Tied-Arch Bridge Under Systematical Suspender Failure . | PROCEEDINGS OF ARCH 2023, VOL 1 , 2025 , 33 , 131-140 . |
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为探析箍筋约束作用对超高强混凝土柱轴压承载力的影响,先开展了足尺的超高强混凝土柱和普通柱轴心受压破坏对比试验,研究了超高强柱与普通柱在裂缝开展规律、破坏形态及极限承载力上的不同.并在此基础上,结合试验结果进一步开展有限元分析,继续针对36个超高强混凝土足尺柱进行了模拟,重点分析了箍筋形式、箍筋间距、箍筋直径等参数对超高强混凝土柱轴压性能的影响,结合试验结果和参数分析结果提出了考虑箍筋约束作用的超高强混凝土柱轴压承载力修正计算公式,并与现行《混凝土结构设计规范》的计算公式进行了对比.结果表明:按等强设计的超高强混凝土柱比普通混凝土柱具有更高的极限承载力,但比普通混凝土柱具有更大脆性,达到极限承载力时材料破坏比普通混凝土柱更为明显;箍筋对核心区混凝土产生的约束作用对超高强混凝土柱的轴压承载力起到了提高作用,改变箍筋形式、箍筋间距、箍筋直径对超高强混凝土柱的极限承载力以及峰值压应变会有较明显的影响;该文提出的超高强混凝土柱轴心受压承载力修正计算公式,结合了研究得出的超高强混凝土柱与普通柱的区别,考虑了箍筋对核心区混凝土的约束效果,相比规范所提的未考虑箍筋约束且主要适用于普通混凝土柱的计算公式,更能在保证安全余度的前提下充分发挥材料的作用,可为实际工程设计提供参考.
Keyword :
承载力修正公式 承载力修正公式 箍筋约束 箍筋约束 约束混凝土 约束混凝土 超高强混凝土 超高强混凝土 轴心受压 轴心受压
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GB/T 7714 | 王素裹 , 邱崴 , 郑宜 et al. 考虑箍筋约束作用的超高强混凝土预制柱轴压承载力修正计算 [J]. | 华南理工大学学报(自然科学版) , 2025 , 53 (4) : 50-60 . |
MLA | 王素裹 et al. "考虑箍筋约束作用的超高强混凝土预制柱轴压承载力修正计算" . | 华南理工大学学报(自然科学版) 53 . 4 (2025) : 50-60 . |
APA | 王素裹 , 邱崴 , 郑宜 , 范冰辉 . 考虑箍筋约束作用的超高强混凝土预制柱轴压承载力修正计算 . | 华南理工大学学报(自然科学版) , 2025 , 53 (4) , 50-60 . |
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To study the effect of stirrup confinement on the axial compressive bearing capacity of ultra-high-strength con⁃ crete (UHSC) precast columns, this paper first conducted an axial compression contrast experiment between full-size UHSC column and ordinary column, and investigated the difference of crack development, failure pattern and ultimate bearing ca⁃ pacity of these two type columns. Based on the experimental results, further finite element analysis was conducted to simu⁃ late 36 full-scale UHSC columns. The study focused on analyzing the effects of stirrup configuration, stirrup spacing, and stirrup diameter on the axial compressive performance of UHSC columns. Combining the experimental findings and para⁃ metric analysis results, a modified calculation formula for the axial compressive bearing capacity of UHSC columns con⁃ sidering stirrup confinement was proposed. The proposed formula was then compared with the calculation formula in the current Code for Design of Concrete Structures. The results show that: the ultimate bearing capacity of equal-strength de⁃ signed UHSC column is higher than that of ordinary concrete column, but it is more brittle than ordinary concrete, espe⁃ cially when reaching the ultimate bearing capacity; the confinement effect of stirrups on the core concrete enhances the axial compressive bearing capacity of UHSC columns. Changes in stirrup configuration, stirrup spacing, and stirrup diameter have a significant impact on the ultimate bearing capacity and peak compressive strain of UHSC columns; the proposed axial compressive bearing capacity correction formula for UHSC columns incorporates the differences between UHSC columns and ordinary concrete columns, considering the confinement effect of stirrups on the core concrete. Compared to the calcu⁃ lation formula provided in the code, which does not account for stirrup confinement and is primarily applicable to ordinary concrete columns, this formula better utilizes the material’s potential while ensuring safety margins. It can serve as a useful reference for practical engineering design. © 2025 South China University of Technology. All rights reserved.
Keyword :
Cracks Cracks Precast concrete Precast concrete Structural analysis Structural analysis Structural dynamics Structural dynamics Ultra-high performance concrete Ultra-high performance concrete
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GB/T 7714 | Wang, Suguo , Qiu, Wei , Cheang, I. et al. Modified Calculation of Axial Compressive Bearing Capacity of Ultra-High-Strength Concrete Precast Column Considering Constraint Effect of Stirrup [J]. | Journal of South China University of Technology (Natural Science) , 2025 , 53 (4) : 50-60 . |
MLA | Wang, Suguo et al. "Modified Calculation of Axial Compressive Bearing Capacity of Ultra-High-Strength Concrete Precast Column Considering Constraint Effect of Stirrup" . | Journal of South China University of Technology (Natural Science) 53 . 4 (2025) : 50-60 . |
APA | Wang, Suguo , Qiu, Wei , Cheang, I. , Fan, Binghui . Modified Calculation of Axial Compressive Bearing Capacity of Ultra-High-Strength Concrete Precast Column Considering Constraint Effect of Stirrup . | Journal of South China University of Technology (Natural Science) , 2025 , 53 (4) , 50-60 . |
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This study investigates the flexural behavior of the large prestressed UHPC box girder. An overpass carrying a section of the Shijiazhuang-Ci County Expressway in Hebei Province is used as a case. A 30 m-long full-scale prestressed UHPC box girder mock-up was prepared for the four-point flextural tests, together with the finite element calculation, the findings of the tests as well as multiple key factors were analyzed, including crack distribution, midspan load-dispalcement curve, UHPC in tensile zone, and the stress-strain curves of the tendons. In the flexural tests, the UHPC in the compressive zone was not crushed when the box girder fractured, the steel fibers were pulled out in the tensile zone, and the cracks propagated through the bottom slabs of the box girder. The load-displacement curves indicate that the box girder experienced four stages during the test, including the elastic stage, the crack propagation stage, the crack rapid propagation stage and failure stage. It can be seen from the stress-strain curves that the UHPC in the tensile zone still contributes tensile stress even when the longitudinal tendons were yielded. The findings in the flexural tests and the measured mechanical property indexes all proved that there was large flexural performance margin of the prestressed UHPC, which can be further optimized. The optimization of the prestressed UHPC box girder was performed considering the amount of common reinforcing bars, prestressing tenons amount, web thickness and bottom slab thickness. It is shown that the UHPC box gider with no normal reinforcement still meets the design requirements of ultimate limit state. Increasing the number of prestressing tendons in the bottom slabs can effectively enhance the compressive strength utilization rate of the UHPC in compression zones. The web thickness should be kept within proper range, thinner webs arc more likely to succumb to oversized principal tensile stress, thus better being no less than 8 cm. Adding external prestressing tendons arc associated with the reduction of the thickness of bottom slabs of the box gider. © 2024 Wuhan Bridge Media Co., Ltd., MBEC. All rights reserved.
Keyword :
Bending moments Bending moments Bending tests Bending tests Box girder bridges Box girder bridges Bridge decks Bridge decks Cables Cables Compressive strength Compressive strength Cracks Cracks Dynamic response Dynamic response Fracture mechanics Fracture mechanics Heat affected zone Heat affected zone Hydroelasticity Hydroelasticity Mockups Mockups Prestressed beams and girders Prestressed beams and girders Residual stresses Residual stresses Shear bands Shear bands Steel beams and girders Steel beams and girders Straightening Straightening Strain rate Strain rate Stress concentration Stress concentration Stress-strain curves Stress-strain curves Stretching Stretching Tensile strength Tensile strength Tensile stress Tensile stress Tensile testing Tensile testing
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GB/T 7714 | Ma, Xilun , Tang, Zixuanx , Chen, Baochun et al. Experimental Study on Flexural Behaviors and Structural Optimization of 30 m-Long Prestressed UHPC Box Girder [J]. | Bridge Construction , 2024 , 54 (3) : 93-99 . |
MLA | Ma, Xilun et al. "Experimental Study on Flexural Behaviors and Structural Optimization of 30 m-Long Prestressed UHPC Box Girder" . | Bridge Construction 54 . 3 (2024) : 93-99 . |
APA | Ma, Xilun , Tang, Zixuanx , Chen, Baochun , Fan, Binghui . Experimental Study on Flexural Behaviors and Structural Optimization of 30 m-Long Prestressed UHPC Box Girder . | Bridge Construction , 2024 , 54 (3) , 93-99 . |
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For through tied-arch bridges, the corrosion and degradation of the cable's load-bearing capacity are the main external causes of cable breakage and subsequent structural failure; nevertheless, the progressive collapse after cable breakage is primarily attributed to the weak structural robustness, which makes a huge potential risk of bridge operation and maintenance (O & M). Whereas, as the basis of O & M, current condition evaluation method has not yet taken into consideration the influence of different consequences of cable breakage, resulting in unscientific conclusions for O & M decisions frequently. In this study, a robustness-based condition evaluation framework for the overall structure of the through tied-arch bridge is presented, consisting of three stages: (1) structural robustness assessment associated with tie-bar and suspender failure respectively; (2) classification of evaluation process by the results of robustness assessment, within which the overall structure is either evaluated using the code method or evaluated directly as unqualified (Condition I and II), or the structural member weightings are adjusted according to the robustness weightings (Condition III); and (3) condition evaluation of entire bridge. The evaluation processes of three conditions are further presented in accordance with the tied-arch structure and suspended deck system. To establish the robustness weightings in Condition III, the safety redundancy indexes of through tied-arch structures as well as the suspended deck system are calculated separately, combined with robustness assessment result. Applying the proposed framework to evaluating the condition of a through tied-arch bridge with different structures, the analysis and comparison indicates that, due to the robustness of the through tied-arch structure and suspended deck system, the variation in the potential risk of accidents induced by cable failure is shown intuitively through the evaluation results, which better meets the needs of guiding bridge O & M decisions consequently.
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GB/T 7714 | Fan, Bing-hui , Wang, Su-guo , Chen, Bao-chun et al. Robustness-Based Condition Evaluation Framework for Through Tied-Arch Bridge [J]. | JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES , 2023 , 37 (2) . |
MLA | Fan, Bing-hui et al. "Robustness-Based Condition Evaluation Framework for Through Tied-Arch Bridge" . | JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES 37 . 2 (2023) . |
APA | Fan, Bing-hui , Wang, Su-guo , Chen, Bao-chun , Chao, Peng-fei , Sun, Qi . Robustness-Based Condition Evaluation Framework for Through Tied-Arch Bridge . | JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES , 2023 , 37 (2) . |
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民用建筑设计中通常存在空间净高不足的问题.为充分利用有限的建筑空间,基于BIM参数化技术建立空间净高优化方法.首先进行Revit三维建模,应用Navisworks平台对建筑空间管线进行碰撞检测,结合管线排布原则进行初步优化;继而结合Dynamo可视化编程开发参数化插件,以自动检测空间净高,对管线排布进行二次优化,直至达到目标净高.以某高铁客运站工程进行案例分析,结果表明该方法在原有楼层高度的基础上,可通过对管线的合理布置与优化,便捷高效地充分利用建筑室内空间而增加净高.
Keyword :
Dynamo可视化编程 Dynamo可视化编程 参数化设计 参数化设计 建筑信息模型(BIM) 建筑信息模型(BIM) 碰撞检测 碰撞检测 空间净高 空间净高
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GB/T 7714 | 范冰辉 , 孙绮 , 陈铿 et al. 基于BIM参数化的室内空间净高优化方法 [J]. | 水利与建筑工程学报 , 2022 , 20 (5) : 172-177 . |
MLA | 范冰辉 et al. "基于BIM参数化的室内空间净高优化方法" . | 水利与建筑工程学报 20 . 5 (2022) : 172-177 . |
APA | 范冰辉 , 孙绮 , 陈铿 , 张岩清 , 黄向宁 . 基于BIM参数化的室内空间净高优化方法 . | 水利与建筑工程学报 , 2022 , 20 (5) , 172-177 . |
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Compared with those of other bridge types, the structural system of through tied-arch bridges is particularly susceptible to failure owing to the deterioration and fracturing of tie-bars as well as a lack of structural robustness, which are the main internal and external causes of progressive collapse accidents, respectively. In particular, low structural robustness strongly influences the severity of accidents induced by tie-bar breakage. To objectively reflect the possible failure mode induced by tie-bar failure and to provide improved structural robustness in through tied-arch bridges, within which the suspended deck system is relatively independent, a robustness assessment framework considering tie-bar failure is proposed in this study, by considering the design and maintenance essentials. First, the main analysis parameters for the extreme-event limit state considering tie-bar failure are put forward, including the critical tie-bar failure rate, partial factor for load effects, transverse reduction factor of multilane loading, dynamic magnification factor of material strength, and reduction factors of residual strength. Second, the quantitative assessment index of structural robustness I-T,I-rob is proposed based on the safety redundancy of the remaining structural members, and robustness assessment rules are put forward in accordance with the different calculation results of I-T,I-rob and horizontal displacement. A typical rigid-framed through tied-arch bridges is assessed using the proposed framework. The assessment results reveal that multiple fortifications against extreme events of tie-bar failure can be established by designing the tie-bars and the piers with sufficient safety features to form the first and final line of defense against the tie-bar breakage effect. Moreover, proper maintenance should be conducted to guarantee the structural robustness of bridges in use. The methodology is well suited for the design of new through tied-arch bridges and to access the robustness of existing bridges to ensure the safety of transportation services.
Keyword :
Progressive collapse Progressive collapse Safety redundancy Safety redundancy Structural robustness Structural robustness Through tied-arch bridge Through tied-arch bridge Tie-bar failure Tie-bar failure
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GB/T 7714 | Fan, Bing-hui , Wang, Su-guo , Chen, Bao-chun . Robustness Assessment Framework for Through Tied-Arch Bridge Considering Tie-Bar Failure [J]. | JOURNAL OF BRIDGE ENGINEERING , 2022 , 27 (5) . |
MLA | Fan, Bing-hui et al. "Robustness Assessment Framework for Through Tied-Arch Bridge Considering Tie-Bar Failure" . | JOURNAL OF BRIDGE ENGINEERING 27 . 5 (2022) . |
APA | Fan, Bing-hui , Wang, Su-guo , Chen, Bao-chun . Robustness Assessment Framework for Through Tied-Arch Bridge Considering Tie-Bar Failure . | JOURNAL OF BRIDGE ENGINEERING , 2022 , 27 (5) . |
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Through and half-through arch bridges is one of the main bridge types in China, having arch ribs and simple suspended deck systems, which are connected by high-strength wire suspenders. However, due to the lack of robustness, the suspended deck systems of these types of bridges caused progressive collapse after the suspender corrosion damage. In this study, the internal structural factor of progressive collapse induced by suspender failure was revealed by comparison of five cases of suspender failure, and the robustness requirement of the suspended deck systems was proposed as redundancy to avoid transverse beam collapse when two supporting suspenders on both ends were broken at the same time. Meanwhile, a typical rigid-framed tied through concrete-filled steel tube arch bridge was investigated, and structural condition evaluation was carried out based on the Chinese standard (JTG/T H21-2011). It was found that the evaluation results of bridges with different deck systems were unreasonable, as the better the robustness was, the worse the condition of the deck system was rated, which would mislead the bridge maintenance decisions. A robustness-based evaluation method was then proposed by adopting different evaluation method according to the robustness of the suspended deck system, which is determined by qualitative classification or quantitative calculation. In addition, weight-adjusting method considering robustness was introduced in the evaluation process. The result showed that the new method could objectively reflect the condition of the bridge and thus fits the needs of bridge maintenance and management better.
Keyword :
arch bridge arch bridge condition evaluation condition evaluation failure failure progressive collapse progressive collapse robustness robustness suspender suspender
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GB/T 7714 | Fan, Bing-Hui , Su, Jia-Zhan , Chen, Bao-Chun . Condition evaluation for through and half-through arch bridges considering robustness of suspended deck systems [J]. | ADVANCES IN STRUCTURAL ENGINEERING , 2021 , 24 (5) : 962-976 . |
MLA | Fan, Bing-Hui et al. "Condition evaluation for through and half-through arch bridges considering robustness of suspended deck systems" . | ADVANCES IN STRUCTURAL ENGINEERING 24 . 5 (2021) : 962-976 . |
APA | Fan, Bing-Hui , Su, Jia-Zhan , Chen, Bao-Chun . Condition evaluation for through and half-through arch bridges considering robustness of suspended deck systems . | ADVANCES IN STRUCTURAL ENGINEERING , 2021 , 24 (5) , 962-976 . |
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