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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 SCIE
期刊论文 | 2025 | JOURNAL OF EARTHQUAKE ENGINEERING
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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 .
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 (2025) .
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 .
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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 Scopus
期刊论文 | 2025 | Journal of Earthquake Engineering
Effect of super absorbent polymers on the self-healing capability of macrocracked ultra-high performance concrete under highly aggressive environments SCIE
期刊论文 | 2024 , 705 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
WoS CC Cited Count: 1
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Abstract :

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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Effect of super absorbent polymers on the self-healing capability of macrocracked ultra-high performance concrete under highly aggressive environments EI
期刊论文 | 2025 , 705 | Colloids and Surfaces A: Physicochemical and Engineering Aspects
Effect of super absorbent polymers on the self-healing capability of macrocracked ultra-high performance concrete under highly aggressive environments Scopus
期刊论文 | 2025 , 705 | Colloids and Surfaces A: Physicochemical and Engineering Aspects
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 CSCD PKU
期刊论文 | 2024 , 60 (01) , 120-126,133 | 兰州大学学报(自然科学版)
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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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Experimental and Numerical Investigations of Flat Approach Slab-Soil Interaction in Jointless Bridge SCIE
期刊论文 | 2024 , 14 (24) | APPLIED SCIENCES-BASEL
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Abstract :

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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Experimental and Numerical Investigations of Flat Approach Slab–Soil Interaction in Jointless Bridge Scopus
期刊论文 | 2024 , 14 (24) | Applied Sciences (Switzerland)
Experimental Investigations of Seismic Performance of Girder-Integral Abutment-Reinforced-Concrete Pile-Soil Systems SCIE
期刊论文 | 2024 , 14 (22) | APPLIED SCIENCES-BASEL
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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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Experimental Investigations of Seismic Performance of Girder–Integral Abutment–Reinforced-Concrete Pile–Soil Systems Scopus
期刊论文 | 2024 , 14 (22) | Applied Sciences (Switzerland)
Experimental Investigations of Seismic Performance of Girder–Integral Abutment–Reinforced-Concrete Pile–Soil Systems EI
期刊论文 | 2024 , 14 (22) | Applied Sciences (Switzerland)
离心成型的粗骨料UHPC输电杆受弯性能试验 CSCD PKU
期刊论文 | 2023 , 55 (07) , 107-116 | 哈尔滨工业大学学报
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为改善普通混凝土电杆自重大、杆身易开裂、承载力低等问题,基于离心成型工艺,调整离心速度、加速度和时间,设计了粗骨料UHPC最优配合比,通过变速离心机制作了6根含粗骨料的UHPC环形电杆,进一步提高了生产效率,采用四点弯曲静力加载,并以钢纤维掺量和配筋率为参数,研究其破坏模式、抗裂性能和承载能力。试验结果表明:电杆破坏方式可分为弹性、裂缝开展和破坏3个阶段;随着钢纤维掺量增加,电杆的主裂缝数量逐渐降低,而细微次裂缝逐渐增多,钢纤维在一定程度上阻碍了裂缝的发展,其受弯承载力提高了42.6%;随着配筋率的增大,电杆的主裂缝数量相差不大,但裂缝长度和宽度明显减小,且抵抗变形能力增强,其受弯承载力提高了63.8%;采用活性粉末混凝土电杆受弯承载力计算方法与试验值较为接近,但相对安全保守,不过随着配筋率和钢纤维掺量的提高,其理论计算值与试验值也越接近。

Keyword :

受弯性能 受弯性能 离心成型 离心成型 粗骨料UHPC 粗骨料UHPC 输电杆 输电杆 配筋率 配筋率 钢纤维 钢纤维

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GB/T 7714 黄福云 , 桂奎 , 陆志军 et al. 离心成型的粗骨料UHPC输电杆受弯性能试验 [J]. | 哈尔滨工业大学学报 , 2023 , 55 (07) : 107-116 .
MLA 黄福云 et al. "离心成型的粗骨料UHPC输电杆受弯性能试验" . | 哈尔滨工业大学学报 55 . 07 (2023) : 107-116 .
APA 黄福云 , 桂奎 , 陆志军 , 马宇 , 黄伟 . 离心成型的粗骨料UHPC输电杆受弯性能试验 . | 哈尔滨工业大学学报 , 2023 , 55 (07) , 107-116 .
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离心成型的粗骨料UHPC输电杆受弯性能试验 CSCD PKU
期刊论文 | 2023 , 55 (7) , 107-116 | 哈尔滨工业大学学报
离心成型的粗骨料UHPC输电杆受弯性能试验 CSCD PKU
期刊论文 | 2023 , 55 (07) , 107-116 | 哈尔滨工业大学学报
Study on the Mechanism of Soil-Steel H-pile Interaction in Integral Abutment Jointless Bridges CPCI-S
期刊论文 | 2023 , 310 , 391-401 | ADVANCES IN CIVIL ENGINEERING MATERIALS
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Abstract :

In integral abutment jointless bridges (IAJBs), the steel H-pile was usually applied in bridges to absorb the horizontal cyclic deformation induced by ambient temperature or earthquake. In order to further study the mechanism of interaction between soil and steel H-pile in IAJBs, several quasi-static tests on interaction of soil-steel H-pile under balanced earth pressure, soil-steel H-pile and soil-abutment-pile under unbalanced earth pressure were carried out. A comparative study was performed to find their behaviors in terms of horizontal deformation law, hysteretic curves, energy dissipation and skeleton curves. The test results indicate that the unbalanced earth pressure is impacted significantly on the horizontal deformation of pile. The horizontal deformation of HP specimen is basically symmetric under positive and negative loading. Its horizontal deformation gradually decreases along buried pile depth, then increases in reverse and finally decreases to zero at bottom of pile. For UHP specimen, the horizontal deformation of UHP model is asymmetric. Among them, the horizontal deformation gradually decreases along buried pile depth, then increases to maximum in reverse and finally decreases along buried pile depth under positive loading. The law of horizontal deformation is similar to HP model under negative loading. However, the horizontal deformation law of AHP model is complicated. Its horizontal deformation is between HP model and UHP model. The test results also indicate that the hysteretic curves of HP model are plump and symmetrical. The hysteretic curve of AHP model is significantly asymmetrical. In addition, the bearing and energy dissipation capacity of AHP model is the highest, whereas the ductility is the lowest.

Keyword :

Bridge engineering Bridge engineering Horizontal deformation Horizontal deformation Integral abutment jointless bridge Integral abutment jointless bridge Soil-structure interaction Soil-structure interaction Unbalanced earth pressure Unbalanced earth pressure

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GB/T 7714 Huang, Fuyun , Li, Lan , Ying, Boxue et al. Study on the Mechanism of Soil-Steel H-pile Interaction in Integral Abutment Jointless Bridges [J]. | ADVANCES IN CIVIL ENGINEERING MATERIALS , 2023 , 310 : 391-401 .
MLA Huang, Fuyun et al. "Study on the Mechanism of Soil-Steel H-pile Interaction in Integral Abutment Jointless Bridges" . | ADVANCES IN CIVIL ENGINEERING MATERIALS 310 (2023) : 391-401 .
APA Huang, Fuyun , Li, Lan , Ying, Boxue , Shan, Yulin , Zhang, Hongjun . Study on the Mechanism of Soil-Steel H-pile Interaction in Integral Abutment Jointless Bridges . | ADVANCES IN CIVIL ENGINEERING MATERIALS , 2023 , 310 , 391-401 .
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Study on the Mechanism of Soil–Steel H-pile Interaction in Integral Abutment Jointless Bridges Scopus
会议论文 | 2023 , 310 , 391-401 | Lecture Notes in Civil Engineering
Study on the Mechanism of Soil–Steel H-pile Interaction in Integral Abutment Jointless Bridges EI
会议论文 | 2023 , 310 , 391-401
Bending performance test of UHPC transmission pole with coarse aggregate formed by centrifugation; [离心成型的粗骨料 UHPC 输电杆受弯性能试验] Scopus CSCD PKU
期刊论文 | 2023 , 55 (7) , 107-116 | Journal of Harbin Institute of Technology
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To resolve the problem of heavy self-weight, easy cracking and low load-bearing capacity of ordinary concrete poles, on the basis of centrifugal molding process, the optimal mix ratio of coarse aggregate UHPC was designed by adjusting the centrifugal speed, acceleration and time. Six UHPC annular poles with coarse aggregate were made by variable speed centrifuge, thus enhancing the production efficiency. The failure mode, crack resistance and bearing capacity were investigated by four-point bending static loading with steel fiber content and reinforcement ratio as parameters. The test results show that the failure mode of the pole can be divided into three stages: elasticity, crack development and failure. With the increase of steel fiber content, the number of main cracks of the pole gradually decreases, while the number of minor cracks increases accordingly. Steel fiber hindered the development of cracks to a certain extent, and its flexural capacity increased by 42. 6% . With the increase of reinforcement ratio, the number of main cracks of the pole is not much different, but the length and width of the cracks are obviously reduced. The resistance to deformation is strengthened, and the flexural bearing capacity is increased by 63. 8% . The calculation results of flexural bearing capacity of RPC pole is close to the experimental value, but relatively safe and conservative. However, with the increase of reinforcement ratio and steel fiber content, the theoretical calculation value is closer to the experimental value. The calculation method of the flexural bearing capacity of the activated powder concrete pole is similar to that of the test results. © 2023 Harbin Institute of Technology. All rights reserved.

Keyword :

centrifugal forming centrifugal forming coarse aggregate UHPC coarse aggregate UHPC flexural performance flexural performance reinforcement ratio reinforcement ratio steel fiber steel fiber transmission pole transmission pole

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GB/T 7714 Huang, F. , Gui, K. , Lu, Z. et al. Bending performance test of UHPC transmission pole with coarse aggregate formed by centrifugation; [离心成型的粗骨料 UHPC 输电杆受弯性能试验] [J]. | Journal of Harbin Institute of Technology , 2023 , 55 (7) : 107-116 .
MLA Huang, F. et al. "Bending performance test of UHPC transmission pole with coarse aggregate formed by centrifugation; [离心成型的粗骨料 UHPC 输电杆受弯性能试验]" . | Journal of Harbin Institute of Technology 55 . 7 (2023) : 107-116 .
APA Huang, F. , Gui, K. , Lu, Z. , Ma, Y. , Huang, W. . Bending performance test of UHPC transmission pole with coarse aggregate formed by centrifugation; [离心成型的粗骨料 UHPC 输电杆受弯性能试验] . | Journal of Harbin Institute of Technology , 2023 , 55 (7) , 107-116 .
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Bending performance test of UHPC transmission pole with coarse aggregate formed by centrifugation EI CSCD PKU
期刊论文 | 2023 , 55 (7) , 107-116 | Journal of Harbin Institute of Technology
Seismic Characteristics of Integral Abutment Bridge with Rigid-Flexible Combined Abutment Based on Shaking Table Model Test Scopus
其他 | 2023 , 2476 (1)
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Aiming at the problem that the strong structure-soil interaction of rigid abutment integral bridge and semi-flexible abutment integral bridge, a new integral abutment bridge with rigid-flexible abutment was proposed, and the shaking table model test was carried out to study its seismic performance. The test result shows that at the seismic fortification intensity 6, the specimen are relatively intact, and no crack was generated, which shown the integral abutment bridge with rigid-flexible combined abutment has good seismic performance. The first-order and second-order frequency of integral abutment bridge with rigid-flexible combined abutment are about 5.0 Hz and 10 Hz, respectively. The damping ratio coefficient of rigid-flexible combined abutment-pile-soil system is about 0.18∼0.25. The soil-rigid-flexible combined abutment-pile interaction amplified from 10.71 times the pile diameter above the bottom of the pile foundation. The maximum dynamic amplification factor of specimen and soil are located at the abutment bottom and the soil surface, respectively. © Published under licence by IOP Publishing Ltd.

Keyword :

Integral Abutment Jointless Bridge Integral Abutment Jointless Bridge Seismic Response Seismic Response Shaking Table Test Shaking Table Test Structure- Soil Interaction Structure- Soil Interaction

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GB/T 7714 Huang, H.Y. , Li, L. , Liu, F. et al. Seismic Characteristics of Integral Abutment Bridge with Rigid-Flexible Combined Abutment Based on Shaking Table Model Test [未知].
MLA Huang, H.Y. et al. "Seismic Characteristics of Integral Abutment Bridge with Rigid-Flexible Combined Abutment Based on Shaking Table Model Test" [未知].
APA Huang, H.Y. , Li, L. , Liu, F. , Zhou, G.J. . Seismic Characteristics of Integral Abutment Bridge with Rigid-Flexible Combined Abutment Based on Shaking Table Model Test [未知].
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Seismic Characteristics of Integral Abutment Bridge with Rigid-Flexible Combined Abutment Based on Shaking Table Model Test EI
会议论文 | 2023 , 2476 (1)
Mechanical behavior of abutment-RC pile-soil structure in integral abutment bridges; [整体式桥台-RC 桩-土体系受力性能] Scopus CSCD PKU
期刊论文 | 2023 , 55 (3) , 128-138 | Journal of Harbin Institute of Technology
SCOPUS Cited Count: 1
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Abstract :

To explore the mechanical properties of integral abutment-RC pile-soil structure, we designed and prefabricated four integral abutment-RC pile models with different pile foundation reinforcement ratios and cross-section shapes taking an integral abutment bridge in China as background. The quasi-static test of integral abutment-RC pile-soil interaction under low cyclic loading was carried out. The effects of reinforcement ratio and cross-section shape of RC pile on the mechanical properties of abutment-RC pile-soil system were mainly studied, and the soil resistance behind abutment, the soil resistance beside pile, and the distribution of pile strain and bending moment were analyzed. Results show that under the action of cyclic displacement of abutment, the distribution of soil resistance near the abutment back along the height direction changed from "triangular" distribution to "parabolic" distribution, and that away from the back of the abutment was basically in "triangular" distribution. The resistance of soil behind abutment was affected by the reinforcement ratio and section shape of RC pile, so it is necessary to increase the reinforcement ratio of RC pile or use rectangular section to improve the integrity of integral abutment-RC pile-soil system. The cumulative deformation of pile affected the distribution of soil resistance on the sides of pile, which reduced the soil resistance behind pile and increased the soil resistance in front of pile. The specimens with larger reinforcement ratio or rectangular cross-sectional RC piles were less affected by the cumulative deformation, and the integrity of abutment-pile foundation-soil structure was better. When the integral abutment-RC pile structure moved to the river span side, the distribution of pile strain and bending moment was consistent with that of traditional pile foundation. When moving to the riverbank, the maximum strain and bending moment of pile appeared at the joint between the bottom of abutment and the top of pile. Increasing the reinforcement ratio of RC pile or adopting rectangular cross-sectional RC pile can effectively reduce the strain and bending moment of pile body and improve the mechanical performance of RC pile foundation. © 2023 Harbin Institute of Technology. All rights reserved.

Keyword :

abutment-pile-soil interaction abutment-pile-soil interaction cross-section shape cross-section shape integral abutment bridge integral abutment bridge mechanical behavior mechanical behavior quasi-static test quasi-static test RC pile RC pile reinforcement ratio reinforcement ratio

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GB/T 7714 Huang, F. , Li, L. , He, L. et al. Mechanical behavior of abutment-RC pile-soil structure in integral abutment bridges; [整体式桥台-RC 桩-土体系受力性能] [J]. | Journal of Harbin Institute of Technology , 2023 , 55 (3) : 128-138 .
MLA Huang, F. et al. "Mechanical behavior of abutment-RC pile-soil structure in integral abutment bridges; [整体式桥台-RC 桩-土体系受力性能]" . | Journal of Harbin Institute of Technology 55 . 3 (2023) : 128-138 .
APA Huang, F. , Li, L. , He, L. , Hu, C. . Mechanical behavior of abutment-RC pile-soil structure in integral abutment bridges; [整体式桥台-RC 桩-土体系受力性能] . | Journal of Harbin Institute of Technology , 2023 , 55 (3) , 128-138 .
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Mechanical behavior of abutment-RC pile-soil structure in integral abutment bridges EI CSCD PKU
期刊论文 | 2023 , 55 (3) , 128-138 | Journal of Harbin Institute of Technology
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