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学者姓名：黄福云
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Abstract ：
This paper aims to address one of the primary sources of uncertainties during earthquakes in Integral Abutment Jointless Bridges (IAJBs): the backfill soil and its intricate interaction with the pile and abutment. To achieve this goal, quasi-static cyclic tests were conducted on three specimens: (i) a steel H-pile buried in balanced soil, (ii) a steel H-pile buried in unbalanced soil, and (iii) an integral abutment steel H-pile buried in unbalanced soil. The findings reveal that the backfill soil and its interaction with the pile and abutment control the deformation of the pile and are beneficial during earthquakes for the IAJBs.
Keyword ：
Integral abutment jointless bridges Integral abutment jointless bridges quasi-static test quasi-static test seismic response seismic response soil-abutment interaction soil-abutment interaction soil-pile interaction soil-pile interaction steel H-pile steel H-pile
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| GB/T 7714 | Javanmardi, Ahad , Huang, Fuyun , Rashidi, Maria et al. Experimental Study on the Effect of Unbalanced Backfill Soil on the Cyclic Response of the Steel H-Pile and Integral Abutment Steel H-Pile Structure [J]. | JOURNAL OF EARTHQUAKE ENGINEERING , 2025 , 29 (6) : 1183-1203 . |
| MLA | Javanmardi, Ahad et al. "Experimental Study on the Effect of Unbalanced Backfill Soil on the Cyclic Response of the Steel H-Pile and Integral Abutment Steel H-Pile Structure" . | JOURNAL OF EARTHQUAKE ENGINEERING 29 . 6 (2025) : 1183-1203 . |
| APA | Javanmardi, Ahad , Huang, Fuyun , Rashidi, Maria , Yu, Yang , Li, Lan . Experimental Study on the Effect of Unbalanced Backfill Soil on the Cyclic Response of the Steel H-Pile and Integral Abutment Steel H-Pile Structure . | JOURNAL OF EARTHQUAKE ENGINEERING , 2025 , 29 (6) , 1183-1203 . |
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整体桥常通过台底柔性混凝土桩基(RC桩)来适应上部结构的水平变形,但RC桩的抗变形能力较低,地震作用下易开裂且不易维修.因此,通过柔性台身来适应结构的水平变形已成为整体桥新的发展方向,并已应用于实际工程中.为研究整体桥柔性台身-RC桩-土动力相互作用机制、破坏模式以及地震响应特点,以深圳马峦山整体桥为工程背景,进行了整体桥柔性台身-RC桩-土体系振动台试验.试验研究表明:Ⅵ度设防以下地震作用时,柔性台身-RC桩结构未发生开裂,仅台后土体出现少量沉降变形;Ⅷ度设防地震作用时,台身与主梁连接处以及桩基埋深-1.69 m处出现了细微裂缝,但试验结束后这些微裂缝已基本闭合.地震作用下,受台后土的侧向运动的影响,整体桥柔性台身-RC桩-土体系的一阶振型为台身-桩基共同向外凸,这揭示了实际工程中大量薄壁式桥台出现"鼓肚子"破坏的原因.试验还表明,柔性台身-桩基-土体系的最大加速度和最大位移响应均在台底处,而非台顶处或墩顶处.当台底达到峰值位移时,柔性台身-桩基-土体系的变形以一阶振型为主,并少量叠加二阶振型;当台顶达到峰值位移时,则以三阶振型为主;在台顶、底达到峰值位移时,台身均出现了较大的剪切变形,其剪切位移角界于弹性位移角和塑性位移角之间.
Keyword ：
动力特性 动力特性 振动台试验 振动台试验 整体桥 整体桥 柔性台身 柔性台身 桥梁工程 桥梁工程 结构-土相互作用 结构-土相互作用
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| GB/T 7714 | 黄福云 , 李岚 , 何凌峰 et al. 整体桥柔性台身-RC桩-土体系振动台试验 [J]. | 中国公路学报 , 2025 , 38 (2) : 175-184 . |
| MLA | 黄福云 et al. "整体桥柔性台身-RC桩-土体系振动台试验" . | 中国公路学报 38 . 2 (2025) : 175-184 . |
| APA | 黄福云 , 李岚 , 何凌峰 , 汤程 , 罗小烨 . 整体桥柔性台身-RC桩-土体系振动台试验 . | 中国公路学报 , 2025 , 38 (2) , 175-184 . |
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To understand the effects of gravity distortion on the seismic responses of concrete filled steel tubular (CFST) single arch ribs, a shaking table test was conducted for a 1/10-scale CFST arch rib model. The testing results indicate that when the time compression level of the seismic wave is large, the effect of gravity distortion on the displacement response of the model vault is relatively minor. In such instances, the full-scale model can be regarded as neglecting gravitational effects. When the time compression level of the seismic wave was small, in models with lower distortion levels, the axial strain values at the arch springing section were higher, surpassing the elastic limit strain of the steel material. Consequently, the arch structure transitioned into the elastoplastic phase. Both the gravity distortion level and time compression level of the input waves exert significant influences on the axial strain response of arch springing section of the model.
Keyword ：
Frequency ratio Frequency ratio Gravity distortion Gravity distortion Seismic response Seismic response Shaking tables test Shaking tables test Single tubular arch rib model Single tubular arch rib model
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| GB/T 7714 | Ouyang, Suying , Huang, Fuyun , Li, Lan . Gravity Distortion Effect on Shaking Table Tests of Concrete Filled Steel Tubular Single Arch Ribs [J]. | PROCEEDINGS OF ARCH 2023, VOL 1 , 2025 , 33 : 317-324 . |
| MLA | Ouyang, Suying et al. "Gravity Distortion Effect on Shaking Table Tests of Concrete Filled Steel Tubular Single Arch Ribs" . | PROCEEDINGS OF ARCH 2023, VOL 1 33 (2025) : 317-324 . |
| APA | Ouyang, Suying , Huang, Fuyun , Li, Lan . Gravity Distortion Effect on Shaking Table Tests of Concrete Filled Steel Tubular Single Arch Ribs . | PROCEEDINGS OF ARCH 2023, VOL 1 , 2025 , 33 , 317-324 . |
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在分析特重车辆作用下独柱墩连续箱梁弯桥倾覆倒塌事故的基础上,提出导致连续箱梁桥发生倾覆的重要原因是主梁在特重载偏心作用下产生侧倾与滑移的共同作用.以湖北省鄂州市发生倾覆落梁事故的三跨连续箱梁弯桥为工程背景,开展抗侧倾和抗滑移理论计算和有限元分析,提出桥梁整体化的抗滑移加固构造.结果表明,该桥梁具有较高的抗侧倾能力,但抗滑移能力明显不足,特重载偏心作用下产生的切向力显著大于支座的最大抗力,主梁极易发生滑移而倾覆.单纯增大桥梁抗侧倾能力的加固方法对提高主梁的抗倾覆效果不佳,应同时增加桥梁的抗滑移能力.该桥梁采用整体化抗滑移加固构造后,具有较强的抗滑移和抗侧倾能力,在特重载偏心作用下主梁不会发生倾覆破坏.
Keyword ：
加固构造 加固构造 抗侧倾 抗侧倾 抗滑移 抗滑移 特重车辆荷载 特重车辆荷载 独柱墩桥梁 独柱墩桥梁
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| GB/T 7714 | 李岚 , 黄福云 , 何凌峰 et al. 特重车辆荷载作用下独柱墩连续箱梁弯桥抗侧倾和抗滑移分析与加固构造 [J]. | 兰州大学学报(自然科学版) , 2024 , 60 (01) : 120-126,133 . |
| MLA | 李岚 et al. "特重车辆荷载作用下独柱墩连续箱梁弯桥抗侧倾和抗滑移分析与加固构造" . | 兰州大学学报(自然科学版) 60 . 01 (2024) : 120-126,133 . |
| APA | 李岚 , 黄福云 , 何凌峰 , 池万杰 , 张健 . 特重车辆荷载作用下独柱墩连续箱梁弯桥抗侧倾和抗滑移分析与加固构造 . | 兰州大学学报(自然科学版) , 2024 , 60 (01) , 120-126,133 . |
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Integral abutment bridges (IABs) have been widely applied in bridge engineering because of their excellent seismic performance, long service life, and low maintenance cost. The superstructure and substructure of an IAB are integrally connected to reduce the possibility of collapse or girders falling during an earthquake. The soil behind the abutment can provide a damping effect to reduce the deformation of the structure under a seismic load. Girders have not been considered in some of the existing published experimental tests on integral abutment-reinforced-concrete (RC) pile (IAP)-soil systems, which may not accurately represent real conditions. A pseudo-static low-cycle test on a girder-integral abutment-RC pile (GIAP)-soil system was conducted for an IAB in China. The experiment's results for the GIAP specimen were compared with those of the IAP specimen, including the failure mode, hysteretic curve, energy dissipation capacity, skeleton curve, stiffness degradation, and displacement ductility. The test results indicate that the failure modes of both specimens were different. For the IAP specimen, the pile cracked at a displacement of +2 mm, while the abutment did not crack during the test. For the GIAP specimen, the pile cracked at a displacement of -8 mm, and the abutment cracked at a displacement of 50 mm. The failure mode of the specimen changed from severe damage to the pile top under a small displacement to damage to both the abutment and pile top under a large displacement. Compared with the IAP specimen, the initial stiffness under positive horizontal displacement (39.2%), residual force accumulation (22.6%), residual deformation (12.6%), range of the elastoplastic stage in the skeleton curve, and stiffness degradation of the GIAP specimen were smaller; however, the initial stiffness under negative horizontal displacement (112.6%), displacement ductility coefficient (67.2%), average equivalent viscous damping ratio (30.8%), yield load (20.4%), ultimate load (7.8%), and range of the elastic stage in the skeleton curve of the GIAP specimen were larger. In summary, the seismic performance of the GIAP-soil system was better than that of the IAP-soil system. Therefore, to accurately reflect the seismic performance of GIAP-soil systems in IABs, it is suggested to consider the influence of the girder.
Keyword ：
bridge engineering bridge engineering displacement ductility displacement ductility equivalent viscous damping ratio equivalent viscous damping ratio integral abutment bridge integral abutment bridge pseudo-static test pseudo-static test seismic performance seismic performance
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| GB/T 7714 | Guo, Weiqiang , Briseghella, Bruno , Xue, Junqing et al. Experimental Investigations of Seismic Performance of Girder-Integral Abutment-Reinforced-Concrete Pile-Soil Systems [J]. | APPLIED SCIENCES-BASEL , 2024 , 14 (22) . |
| MLA | Guo, Weiqiang et al. "Experimental Investigations of Seismic Performance of Girder-Integral Abutment-Reinforced-Concrete Pile-Soil Systems" . | APPLIED SCIENCES-BASEL 14 . 22 (2024) . |
| APA | Guo, Weiqiang , Briseghella, Bruno , Xue, Junqing , Nuti, Camillo , Huang, Fuyun . Experimental Investigations of Seismic Performance of Girder-Integral Abutment-Reinforced-Concrete Pile-Soil Systems . | APPLIED SCIENCES-BASEL , 2024 , 14 (22) . |
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In this study, the performance of superabsorbent polymers (SAPs) as self-healing agents in macrocracked ultrahigh performance concrete (UHPC) was extensively evaluated, with a focus on compressive strength behavior in different aggressive environments. Three UHPC mixtures were designed: a control mixture, a UHPC with 0.3 % sodium polyacrylate (poly(AA)), and a UHPC with 0.3 % polyacrylate-co-acrylamide (poly(AA-co-AM)). Samples with macrocrack widths of 0.3 mm, 0.5 mm, and 1 mm, as well as uncracked samples, were prepared. The samples underwent immersion in deionized water, chloride saltwater, and compound saltwater. The performance of self-healing was evaluated by measuring crack closure rates, recovered compressive strength, and stereomicroscopic inspections. Further, scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM/EDX) was performed to monitor mineral formation and the healing process. The results indicate that both poly(AA) and poly(AA-co-AM) SAPs significantly enhanced the self-healing capabilities of UHPC, with poly(AA) demonstrating superior performance. Self-healing was more pronounced in samples with cracks width of 0.3 mm, whereas samples with cracks widths of 0.5 mm and 1.0 mm exhibited incomplete and negligible healing, respectively. The healed samples recovered a substantial portion of their compressive strength, regardless of the crack width. However, the presence of chloride and/or sulfate ions was found to impede the self-healing process. As observed from the SEM/EDX results, in addition to CaCO3 and C-S-H gel, undesirable healing products like Friedel's salt and ettringite were also formed in chloride and compound saltwater environments which significantly affected self-healing durability.
Keyword ：
Chloride saltwater Chloride saltwater Compound saltwater Compound saltwater Compressive strength recovery Compressive strength recovery Macrocrack Macrocrack Self-healing Self-healing Super absorbent polymer Super absorbent polymer Ultra-high performance concrete Ultra-high performance concrete
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| GB/T 7714 | Hassi, Sara , Javanmardi, Ahad , Menu, Bruce et al. Effect of super absorbent polymers on the self-healing capability of macrocracked ultra-high performance concrete under highly aggressive environments [J]. | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS , 2024 , 705 . |
| MLA | Hassi, Sara et al. "Effect of super absorbent polymers on the self-healing capability of macrocracked ultra-high performance concrete under highly aggressive environments" . | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 705 (2024) . |
| APA | Hassi, Sara , Javanmardi, Ahad , Menu, Bruce , Lai, Zhichao , Huang, Fuyun . Effect of super absorbent polymers on the self-healing capability of macrocracked ultra-high performance concrete under highly aggressive environments . | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS , 2024 , 705 . |
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In jointless bridges, a grade flat approach slab (GFAS) with the same elevation as the pavement can transfer the girder's longitudinal deformation to the backfill. However, any cracks and settlement of the pavement usually occur at the end of the GFAS. To address this shortcoming, the buried flat approach slab (BFAS) horizontally embedded at a depth in the backfill was proposed. The complicated flat approach slab-soil interaction (FASSI) of the BFAS has not been systemically investigated. To address this gap, the influence of the FASSI on the mechanical performance of the approach slab and the backfill deformation was investigated in this research to understand the mechanism of the FASSI in absorbing one part of the girder's longitudinal deformation and transferring the rest to the soil. Experimental tests on the FASSI with different embedded depths under longitudinal displacements were conducted. Numerical parametric analyses were carried out by considering the embedded depths and slab lengths as the parameters based on a finite element model verified using the test results. The results show that load-displacement curves of the FASSI comprise three stages: the elastic stage (approach slab's displacement was absorbed by sand), the elastoplastic stage (sand deformation was observed), and the failure stage (overall shear failure of the sand was found). The longitudinal displacement transfer mode and vertical deformation distribution mode of the sand were affected by the embedded depth and slab length. With an increase in the embedded depth or a decrease in the slab length, the sand deformation decreases, which is beneficial for avoiding pavement crack risks and improving the pavement evenness. Finally, a simplified calculation formula that can be used to predict the load-displacement curves of the FASSI was proposed. This research provides the theoretical basis for the design and construction of the flat approach slab in jointless bridges.
Keyword ：
approach slab-soil interaction approach slab-soil interaction flat approach slab flat approach slab jointless bridges jointless bridges load-displacement curve load-displacement curve sand deformation sand deformation simplified calculation formula simplified calculation formula
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| GB/T 7714 | Tang, Yufeng , Briseghella, Bruno , Xue, Junqing et al. Experimental and Numerical Investigations of Flat Approach Slab-Soil Interaction in Jointless Bridge [J]. | APPLIED SCIENCES-BASEL , 2024 , 14 (24) . |
| MLA | Tang, Yufeng et al. "Experimental and Numerical Investigations of Flat Approach Slab-Soil Interaction in Jointless Bridge" . | APPLIED SCIENCES-BASEL 14 . 24 (2024) . |
| APA | Tang, Yufeng , Briseghella, Bruno , Xue, Junqing , Nuti, Camillo , Huang, Fuyun . Experimental and Numerical Investigations of Flat Approach Slab-Soil Interaction in Jointless Bridge . | APPLIED SCIENCES-BASEL , 2024 , 14 (24) . |
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| GB/T 7714 | Lin, Jianhui , Briseghella, Bruno , Xue, Junqing et al. Temperature Monitoring and Response of Deck-Extension Side-by-Side Box Girder Bridges (vol 34, pg 1, 2019) [J]. | JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES , 2023 , 37 (6) . |
| MLA | Lin, Jianhui et al. "Temperature Monitoring and Response of Deck-Extension Side-by-Side Box Girder Bridges (vol 34, pg 1, 2019)" . | JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES 37 . 6 (2023) . |
| APA | Lin, Jianhui , Briseghella, Bruno , Xue, Junqing , Tabatabai, Habib , Huang, Fuyun , Chen, Baochun . Temperature Monitoring and Response of Deck-Extension Side-by-Side Box Girder Bridges (vol 34, pg 1, 2019) . | JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES , 2023 , 37 (6) . |
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In this paper, a quasi-static cyclic test was performed on an integral abutment-steel H-pile specimen considering the interaction of the soil with the abutment and pile in order to evaluate its seismic response. The results in terms of failure mechanism, deformation, earth pressure distribution, hysteretic behavior, backbone curve, stiffness, damping ratio, and ductility are briefly discussed. The results indicated that the interaction of the backfill soil with the abutment and pile could significantly improve the overall cyclic response of the IAJB. In addition, the integral abutment-steel H-pile structure has good ductility and energy dissipation capability.
Keyword ：
abutment-steel H-pile structure abutment-steel H-pile structure Bridge engineering Bridge engineering integral abutment jointless bridge integral abutment jointless bridge seismic response seismic response soil-structure interaction soil-structure interaction Steel H-Pile Steel H-Pile
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| GB/T 7714 | Ahad Javanmardi , Fuyun Huang , Wei Chen et al. Experimental Study on Seismic Response of an Integral Abutment: Steel H-Pile Structure under Quasi-Static Cyclic Loads [J]. | Journal of Earthquake Engineering , 2023 , 27 (9) : 2358-2380 . |
| MLA | Ahad Javanmardi et al. "Experimental Study on Seismic Response of an Integral Abutment: Steel H-Pile Structure under Quasi-Static Cyclic Loads" . | Journal of Earthquake Engineering 27 . 9 (2023) : 2358-2380 . |
| APA | Ahad Javanmardi , Fuyun Huang , Wei Chen , Pu Xu , Junqing Xue . Experimental Study on Seismic Response of an Integral Abutment: Steel H-Pile Structure under Quasi-Static Cyclic Loads . | Journal of Earthquake Engineering , 2023 , 27 (9) , 2358-2380 . |
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The objective of this article was to investigate the potential for the dissolution and leaching of certain chemical elements from the protective mortar coatings of prestressed concrete cylinder pipe (PCCP) into drinking water in the event of leakage and how this might affect the overall quality of the water delivered to consumers. The mortars as linings are also typically used for renovation of old pipes. Samples from three frequently used mortar coating mixtures underwent immersion in water after 28 days of curing and were monitored for 430 days. The water was tested for pH levels and the presence of aluminum, chromium, lead, and iron, in accordance with the standards set for human consumption in Moroccan and other countries such as Australia, Canada, and the United States, as well as organizations such as the European Union and World Health Organization. The results indicate that the highest levels of aluminum, iron, chromium, and lead leaching occurred after the initial contact with water, gradually declining over time. Furthermore, the inclusion of silica fume and fly ash in the coating increases the potential for chemical element leaching. Additionally, preinstallation pipeline washing demonstrates its effectiveness in reducing the leaching of chemical elements into drinking water in the event of leakages. The overall results suggest that the likelihood of contamination of drinking water by leaching of chemical elements from the mortar coating in case of a leakage appears to be negligible under the studied conditions.
Keyword ：
drinking water drinking water fly ash fly ash leaching leaching PCCP mortar coating PCCP mortar coating silica fume silica fume
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| GB/T 7714 | Hassi, Sara , Menu, Bruce , Javanmardi, Ahad et al. Investigating the possibility of PCCP mortar coating leaching and the impact on drinking water quality [J]. | CLEAN-SOIL AIR WATER , 2023 , 51 (10) . |
| MLA | Hassi, Sara et al. "Investigating the possibility of PCCP mortar coating leaching and the impact on drinking water quality" . | CLEAN-SOIL AIR WATER 51 . 10 (2023) . |
| APA | Hassi, Sara , Menu, Bruce , Javanmardi, Ahad , Lai, Zhichao , Huang, Fuyun . Investigating the possibility of PCCP mortar coating leaching and the impact on drinking water quality . | CLEAN-SOIL AIR WATER , 2023 , 51 (10) . |
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