Query：
学者姓名：卓卫东
Refining：
Year
Type
Indexed by
Source
Complex
Former Name
Co-
Language
Clean All
Abstract ：
以京台高速公路某大桥为工程背景，设计了相应的新型组合高墩。通过有限元方法，考虑包括材料与几何非线性，分别采用实体单元建立了针对高墩悬臂施工阶段的模型，以及梁单元建立了全桥运营阶段模型分析其稳定性，获得其稳定承载力以及稳定系数。通过有限元参数分析，探讨了不同工况、墩身高度、软钢板厚度、屈服强度以及系梁间距对高墩稳定性的影响。计算结果表明，悬臂不平衡施工为最不利工况，组合高墩发生纵桥向压弯变形失稳，该阶段高墩的稳定系数相较悬臂平衡施工阶段下降30%。不同工况下，墩身的最不利截面处于受压侧钢管混凝土柱距离墩底0.1~0.2高度区域；随着墩身长细比增大，稳定系数出现显著下降，其破坏模式由弹塑性失稳逐渐转变为弹性失稳；软钢板厚度增大有利于稳定系数的提高；系梁间距按照传统高墩经验设计，取10 m~12 m最有利高墩稳定。基于参数分析结果，提出新型组合高墩简化模型，所得到的稳定承载力计算方法，适用于长细比超过70的组合高墩；当长细比小于70，建议采用短柱极限承载力折减方法计算。
Keyword ：
参数分析 参数分析 桥梁工程 桥梁工程 稳定 稳定 简化模型 简化模型 组合高墩 组合高墩
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 蔡哲罕 , 卓卫东 , 王志坚 et al. 钢管混凝土柱-软钢板组合高墩施工与运营阶段的稳定性 [J]. | 工程力学 , 2025 , 42 (2) : 216-228 . |
| MLA | 蔡哲罕 et al. "钢管混凝土柱-软钢板组合高墩施工与运营阶段的稳定性" . | 工程力学 42 . 2 (2025) : 216-228 . |
| APA | 蔡哲罕 , 卓卫东 , 王志坚 , 黄新艺 , 刘秋江 . 钢管混凝土柱-软钢板组合高墩施工与运营阶段的稳定性 . | 工程力学 , 2025 , 42 (2) , 216-228 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Earthquake-induced debris flow landslides pose a serious threat to bridge structures. However, current research on the dynamic response and damage mechanisms of bridges due to debris flow landslides is still insufficient; the fragility analysis of bridges under the combined effects of earthquakes and related geological hazards needs further improvement. In this paper, a bridge dynamic response simulation method is proposed for the coupled effects of transverse earthquakes and debris flow landslides. The method first establishes an integrated model of the mountain and bridge piers, using the discrete element method to calculate the dynamic impact of the landslide on the piers. Subsequently, a nonlinear dynamic model of the bridge is established using the finite element method. By inputting the time histories of transverse seismic motion and landslide impact, the coupled effects of transverse earthquakes and landslides are analyzed. The paper analyzes the influence of sliding distance, landslide length, and slope gradient on the dynamic response and fragility of bridges through case studies. Research reveals that the shear capacity of the pier under the coupled effects of earthquakes and landslides should be considered. The combined effects also increase the displacement response of the piers, with the maximum pier top drift ratio of the case bridge increasing by 334 % at a 35 degrees slope compared to the earthquakeonly condition. Under the coupled effects of earthquakes and landslides, the piers will experience significant residual deformation in the direction of the landslide. Increases in sliding distance, landslide length, and slope gradient all increase the fragility of bridges under various damage states, with the complete damage probability of the case bridge rising from 5 % under earthquake-only conditions to 47 % at a 35 degrees slope. The slope gradient has the greatest sensitivity to the fragility of bridges, followed by the sliding distance, and finally the landslide length.
Keyword ：
Bridge damage mechanisms Bridge damage mechanisms Bridge fragility Bridge fragility Debris flow landslides Debris flow landslides Earthquake and landslide coupling Earthquake and landslide coupling Mountain bridges Mountain bridges
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lian, Qiang , Chen, Libo , Dang, Xinzhi et al. Dynamic response and fragility of mountain bridges under the coupled effects of transverse earthquakes and landslides [J]. | SOIL DYNAMICS AND EARTHQUAKE ENGINEERING , 2025 , 188 . |
| MLA | Lian, Qiang et al. "Dynamic response and fragility of mountain bridges under the coupled effects of transverse earthquakes and landslides" . | SOIL DYNAMICS AND EARTHQUAKE ENGINEERING 188 (2025) . |
| APA | Lian, Qiang , Chen, Libo , Dang, Xinzhi , Zhuo, Weidong , Li, Changchun . Dynamic response and fragility of mountain bridges under the coupled effects of transverse earthquakes and landslides . | SOIL DYNAMICS AND EARTHQUAKE ENGINEERING , 2025 , 188 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Based on the prototype tall pier bridge on Jingtai Highway, one new composite tall pier is designed. By utilizing the finite element software, the solid models are established for the nonlinear stability analysis of the tall pier under the cantilever stage, and the beam model for the pier after construction. Then, the stability capacity and coefficients were obtained. The parametric analysis was carried out to investigate the influence of thickness, of the yield point of LYP steel plate, of the height of specimens and, of the distance of a tie beam. Numerical calculations show that: unbalanced cantilever construction stage is the most unfavorable condition for the bridge, and the failure mode is compression-bending in longitude. The stability coefficient decreases by 30% compared with the balanced cantilever construction. Under different working conditions, the maximum strain of steel tubes occurred around 0.1~0.2 height of the CFST column on the compression side. With the increase of the slenderness ratio of the pier, the stability decreases significantly, and the failure mode gradually transforms from elastoplastic instability to elastic instability. The increase in the thickness of the LYP steel plate is beneficial to the improvement of the stability. It is favorable for the stability of the pier that the distance of tie beams is designed according to the experience of conventional tall piers, i.e. 10 m~12 m. Based on the parametric analysis, proposed are a new simplified model for new composite tall piers and formulas for calculating the stability capacity. The theoretical calculation results are in a good agreement with the numerical results when the slenderness ratio of the tall pier more than 70. When the slenderness ratio less than 70, it is accepted to calculate the stability capacity by the reduction of the bearing capacity of stocky columns. © 2025 Tsinghua University. All rights reserved.
Keyword ：
Bridge piers Bridge piers Cantilever beams Cantilever beams Cantilever bridges Cantilever bridges Composite bridges Composite bridges Plates (structural components) Plates (structural components) Tubular steel structures Tubular steel structures
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Cai, Zhe-Han , Zhuo, Wei-Dong , Wang, Zhi-Jian et al. STABILITY OF CONCRETE-FILLED STEEL TUBULAR COLUMN-LYP STEEL PLATE COMPOSITE TALL PIER IN CONSTRUCTION AND SERVICE STAGES [J]. | Engineering Mechanics , 2025 , 42 (2) : 216-228 . |
| MLA | Cai, Zhe-Han et al. "STABILITY OF CONCRETE-FILLED STEEL TUBULAR COLUMN-LYP STEEL PLATE COMPOSITE TALL PIER IN CONSTRUCTION AND SERVICE STAGES" . | Engineering Mechanics 42 . 2 (2025) : 216-228 . |
| APA | Cai, Zhe-Han , Zhuo, Wei-Dong , Wang, Zhi-Jian , Huang, Xin-Yi , Liu, Qiu-Jiang . STABILITY OF CONCRETE-FILLED STEEL TUBULAR COLUMN-LYP STEEL PLATE COMPOSITE TALL PIER IN CONSTRUCTION AND SERVICE STAGES . | Engineering Mechanics , 2025 , 42 (2) , 216-228 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The influence of twin-box girder attachments on the driving wind environment of a long-span coastal bridge under crosswind was experimentally studied in a boundary layer wind tunnel. First, the particle image velocimetry (PIV) technique and anemometers were used to determine the optimal PIV window size. Then, the effects of attachments and vehicles on average wind speed, turbulent kinetic energy, Reynolds stress, and equivalent wind speed reduction coefficient on the driving wind environment were analyzed. Results indicate that bridge attachments alter both the magnitude and distribution of average wind speed on the windward side of the vehicle. Turbulent kinetic energy peaks were observed near the windward side of attachments, particularly in the wake region above the vehicle. Reynolds stress peaks were primarily located on the windward side of the attachments; increasing the height of the attachments expanded the peak area above the vehicle while reducing the wake region's area. The coefficient of equivalent wind speed reduction provides a reasonable quantification of changes in the driving wind environment. However, the difference between conditions with and without the vehicle was significant, suggesting that practical wind barrier solutions should prioritize aerodynamic measurements of vehicles behind wind barriers.
Keyword ：
attachments attachments Crosswind Crosswind PIV PIV twin-box girder twin-box girder
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lin, Xiaobo , Zhuo, Weidong , Lin, Li et al. Experimental Study on The Influence of Twin-Box Girder Attachments on the Driving Wind Environment of a Long-Span Coastal Bridge Under Crosswind [J]. | INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS , 2025 . |
| MLA | Lin, Xiaobo et al. "Experimental Study on The Influence of Twin-Box Girder Attachments on the Driving Wind Environment of a Long-Span Coastal Bridge Under Crosswind" . | INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS (2025) . |
| APA | Lin, Xiaobo , Zhuo, Weidong , Lin, Li , Wang, Huaifeng , Xia, Dandan , Liu, Zhixin et al. Experimental Study on The Influence of Twin-Box Girder Attachments on the Driving Wind Environment of a Long-Span Coastal Bridge Under Crosswind . | INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS , 2025 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
To assess the importance of bridges in road networks and achieve uniform traffic loss risk in seismic design, this paper introduces a novel bridge seismic design methodology incorporating the Seismic Importance Adjustment Factor (SIAF) and uniform traffic loss risk. The key technical contributions are as follows: (1) defining SIAF and developing an integrated framework that couples seismic design with traffic loss risk assessment; (2) proposing a calculation method for traffic loss risk that accounts for traffic demand variations during different periods of the day, uncertainties in post-earthquake bridge repair times, and dynamic traffic flow reassignment in post-earthquake road networks; (3) establishing design indicators for traffic loss risk and defining five seismic risk design levels based on historical disaster data; (4) validating the methodology through case studies on bridges and road networks, demonstrating how SIAF interconnects seismic design with risk-based design targets and adapt seismic design standards to varying network redundancies. The research demonstrates that SIAF can quantify bridge importance within complex road networks and provide a practical reference for the development of seismic design standards.
Keyword ：
Redundancy Redundancy Road network Road network Seismic design standard Seismic design standard Traffic loss risk Traffic loss risk Uniform seismic risk Uniform seismic risk
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lian, Qiang , Zhuo, Weidong , Dang, Xinzhi et al. Bridge seismic design method incorporating seismic importance adjustment factor and uniform traffic loss risk [J]. | BULLETIN OF EARTHQUAKE ENGINEERING , 2025 , 23 (4) : 1797-1827 . |
| MLA | Lian, Qiang et al. "Bridge seismic design method incorporating seismic importance adjustment factor and uniform traffic loss risk" . | BULLETIN OF EARTHQUAKE ENGINEERING 23 . 4 (2025) : 1797-1827 . |
| APA | Lian, Qiang , Zhuo, Weidong , Dang, Xinzhi , Zhang, Qiwei . Bridge seismic design method incorporating seismic importance adjustment factor and uniform traffic loss risk . | BULLETIN OF EARTHQUAKE ENGINEERING , 2025 , 23 (4) , 1797-1827 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
拼接缝是节段预制拼装混凝土盖梁的薄弱环节,为研究其抗剪承载力,开展了盖梁键齿胶接缝抗剪性能试验及有限元模拟分析,模拟剪切荷载-相对滑移曲线和开裂破坏形态与试验结果吻合较好.采用有限元模型对盖梁键齿胶接缝进行参数分析,探讨侧向压应力、混凝土强度等级、键齿内配筋率以及键齿数量、深度和倾角对键齿胶接缝抗剪承载力的影响.研究结果表明:键齿胶接缝在剪力作用下的破坏模式均为脆性破坏.键齿胶接缝的抗剪承载力随着侧向压应力、混凝土强度等级及键齿内配筋率的增加而增加:当侧向压应力由 1 MPa增至 9 MPa时,抗剪承载力增加了 71.3%;当混凝土强度等级由C40 提高至C80 时,抗剪承载力增加了 22.3%;当键齿内配筋率由 0.5%增至 2.6%时,抗剪承载力增加了 14.8%.键齿数量、深度和倾角均对键齿胶接缝的抗剪承载力有较大影响,建议实际工程中键齿数量不超过 3 个,深度不超过 105 mm,倾角不超过 45°.基于Gopal公式建立了键齿胶接缝抗剪承载力的实用计算公式,该公式计算结果与试验及有限元分析结果均吻合良好,可用于键齿胶接缝的抗剪承载力计算.
Keyword ：
侧向压应力 侧向压应力 抗剪承载力 抗剪承载力 有限元模拟 有限元模拟 胶接缝 胶接缝 键齿倾角 键齿倾角
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 李长春 , 秦志清 , 陈金盛 et al. 混凝土盖梁胶接缝抗剪承载力试验及参数分析 [J]. | 天津大学学报（自然科学与工程技术版） , 2025 , 58 (4) : 368-378 . |
| MLA | 李长春 et al. "混凝土盖梁胶接缝抗剪承载力试验及参数分析" . | 天津大学学报（自然科学与工程技术版） 58 . 4 (2025) : 368-378 . |
| APA | 李长春 , 秦志清 , 陈金盛 , 卓卫东 . 混凝土盖梁胶接缝抗剪承载力试验及参数分析 . | 天津大学学报（自然科学与工程技术版） , 2025 , 58 (4) , 368-378 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Based on the capability design principle and design concept of earthquake-resilient structure, this paper proposes a box-section high pier composed of four-limb concrete-filled steel tubular (CFST) columns and low yield point (LYP) steel plates as replaceable components, thus improving the seismic performance of a bridge comprising conventional RC tall piers. A set of 1/ 10 scale specimens were designed and manufactured. Then, to investigate the effects of the eccentricity ratio of load and the thickness of the LYP steel plate on the compression performance of the proposed composite tall pier, axial and eccentric compression tests were conducted. The test results demonstrated that under axial compression, the four-limb CFST columns worked collaboratively well. In particular, the compression became increasingly larger until the specimen was broken and the test was terminated, after which the four-limb tube-LYP steel plates yielded, and the confinement of steel tube ferrule to the concrete core took full effect. Furthermore, the specimen exhibited compression-bending failure. When the loading eccentricity ratio was less than 0. 405, the four-limb CFST columns were in full section compression. The longitudinal strains of the composite section basically met the 'assumption of plane-section' and 'assumption of quasi-plane-section' at the elastic and elastic-plastic stages, respectively. The specimens also exhibited global press-bending failure as the tests were terminated. Furthermore, the stresses of steel beams were small and only played a role in tectonism. Finally, increasing the thickness of LYP steel plates enhanced the bending stiffness and compressive bearing capacity while reducing the lateral deflection. Therefore, the effects of the 'bearing components' should be considered in the computation of the compressive capacity. © 2024 Editorial Board of Journal of Harbin Engineering. All rights reserved.
Keyword ：
Bending tests Bending tests Compression testing Compression testing Concretes Concretes Ductile fracture Ductile fracture Earthquakes Earthquakes Elastoplasticity Elastoplasticity Piers Piers Plates (structural components) Plates (structural components) Seismic design Seismic design Tubular steel structures Tubular steel structures
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Cai, Zhehan , Zhuo, Weidong , Lin, Kaiqi et al. An experimental investigation on the compression performance of composite tall pier with CFST column-LYP steel plate [J]. | Journal of Harbin Engineering University , 2024 , 45 (3) : 561-571 . |
| MLA | Cai, Zhehan et al. "An experimental investigation on the compression performance of composite tall pier with CFST column-LYP steel plate" . | Journal of Harbin Engineering University 45 . 3 (2024) : 561-571 . |
| APA | Cai, Zhehan , Zhuo, Weidong , Lin, Kaiqi , Wang, Zhijian , Liu, Qiujiang . An experimental investigation on the compression performance of composite tall pier with CFST column-LYP steel plate . | Journal of Harbin Engineering University , 2024 , 45 (3) , 561-571 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
针对采用键齿胶接缝构造的节段预制拼装混凝土盖梁拼接缝抗剪性能研究较为缺乏的现状，设计制作了3组共7个足尺胶接缝键齿试件，考虑键齿倾角、键齿深度和侧向压应力3种影响因素，进行直剪试验研究。试验结果表明：键齿胶接缝在直剪荷载作用下的破坏模式均为脆性破坏，主裂缝形态受侧向压应力、键齿深度及键齿倾角的耦合影响；增大侧向压应力或键齿深度均能有效提高键齿胶接缝的抗剪承载力，且破坏相对滑移保持为同量级；键齿倾角为30°时，键齿胶接缝的开裂荷载和抗剪承载力最大；当键齿倾角>45°,抗剪承载力有明显下降，故实际工程中键齿倾角不应超过45°。
Keyword ：
侧向压应力 侧向压应力 开裂荷载 开裂荷载 抗剪承载力 抗剪承载力 胶接缝 胶接缝 键齿倾角 键齿倾角 键齿深度 键齿深度
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 傅健鑫 , 李长春 , 李鑫 et al. 节段预制拼装混凝土盖梁胶接缝抗剪性能试验 [J]. | 福建建设科技 , 2024 , 4 (03) : 84-87 . |
| MLA | 傅健鑫 et al. "节段预制拼装混凝土盖梁胶接缝抗剪性能试验" . | 福建建设科技 4 . 03 (2024) : 84-87 . |
| APA | 傅健鑫 , 李长春 , 李鑫 , 匡鑫 , 徐文琪 , 王文豪 et al. 节段预制拼装混凝土盖梁胶接缝抗剪性能试验 . | 福建建设科技 , 2024 , 4 (03) , 84-87 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
将钢渣混凝土灌入中空夹层钢管混凝土结构，充分利用钢渣混凝土的微膨胀性和中空夹层内外钢管对混凝土的约束作用，有效解决了钢渣混凝土工程应用中的安定性问题。以混凝土类型、空心率、支主管直径比和轴压比为参数变量，共进行了5个中空夹层钢管混凝土T形节点试件（1个普通混凝土试件、4个钢渣混凝土试件）拟静力试验研究。试验结果表明：与灌注普通混凝土相比，灌注钢渣混凝土对试件节点承载力影响不大，但位移延性和耗能能力明显增加，提高幅度分别达69.46%和48.20%；当空心率从0.3增大到0.5时，试件位移延性系数提高9.69%；当支主管直径比从0.40增大到0.68时，位移延性系数提高82.44%；当轴压比从0.1增大到0.2时，试件位移延性系数降低17.98%。建立有限元模型对试件的滞回性能进行了模拟，模拟结果与试验结果基本符合，验证了所建有限元模型的有效性。进而开展了节点承载力影响参数分析，得到最佳空心率为70%左右。钢渣在钢管混凝土结构中应用，可大幅提高其抗震性能。
Keyword ：
中空夹层钢管混凝土 中空夹层钢管混凝土 抗震性能 抗震性能 拟静力试验 拟静力试验 滞回特性 滞回特性 钢渣混凝土 钢渣混凝土
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 曾武华 , 王伟 , 陈庆熠 et al. 中空夹层钢管钢渣混凝土T形节点抗震性能研究 [J]. | 振动工程学报 , 2024 , 37 (06) : 1023-1032 . |
| MLA | 曾武华 et al. "中空夹层钢管钢渣混凝土T形节点抗震性能研究" . | 振动工程学报 37 . 06 (2024) : 1023-1032 . |
| APA | 曾武华 , 王伟 , 陈庆熠 , 王军芳 , 吴应雄 , 卓卫东 . 中空夹层钢管钢渣混凝土T形节点抗震性能研究 . | 振动工程学报 , 2024 , 37 (06) , 1023-1032 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
为改善传统钢筋混凝土高墩桥梁的抗震性能，基于能力设计原理和结构抗震韧性设计理念，本文提出一种可更换部件的四肢钢管混凝土柱-软钢板组合箱形截面高墩。本文设计制作了1/10比例的缩尺试件，通过轴心和偏心受压试验，研究荷载偏心率、软钢板厚度等对新型组合高墩受压性能的影响。试验结果表明：新型组合高墩试件在轴压作用下，四肢钢管混凝土柱基本整体协调变形；当加载至试件破坏时，四肢钢管及软钢板均早已受压屈服，钢管套箍作用充分发挥；破坏形态呈整体弯曲失稳。在受偏心压力作用且偏心率不超过0.405时，四肢钢管混凝土柱全截面受压，组合截面纵向应变分布在弹性阶段基本满足“平截面假定”,在弹塑性阶段近似满足“拟平截面假定”;当加载至试件破坏时，破坏形态亦呈整体弯曲失稳。此外，钢系梁受力较小，仅起构造作用；而增大软钢板厚度，可有效提高新型组合高墩的截面抗弯刚度和正截面受压承载力，降低其侧向挠度；故在计算新型组合高墩的受压承载力时，应充分考虑软钢板的“结构元件”作用。
Keyword ：
受压性能 受压性能 可更换构件 可更换构件 拟平截面假定 拟平截面假定 桥梁工程 桥梁工程 组合高墩 组合高墩 软钢板 软钢板 轴压试验 轴压试验 钢管混凝土柱 钢管混凝土柱
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 蔡哲罕 , 卓卫东 , 林楷奇 et al. 钢管混凝土柱-软钢板组合高墩受压性能试验 [J]. | 哈尔滨工程大学学报 , 2024 , 45 (03) : 561-571 . |
| MLA | 蔡哲罕 et al. "钢管混凝土柱-软钢板组合高墩受压性能试验" . | 哈尔滨工程大学学报 45 . 03 (2024) : 561-571 . |
| APA | 蔡哲罕 , 卓卫东 , 林楷奇 , 王志坚 , 刘秋江 . 钢管混凝土柱-软钢板组合高墩受压性能试验 . | 哈尔滨工程大学学报 , 2024 , 45 (03) , 561-571 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
