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学者姓名：许莉
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Abstract ：
由于基坑开挖过程存在大量的不确定性，其支护结构在设计阶段无法根据现场环境的变化进行实时变形可靠度分析与预测.围护结构分布范围大，失效位置不可预测.工程监测数据由于监测点数量的限制难以直接反映围护结构连续变化的状态.采用穿越率法，提出一种适用于以地下连续墙为围护结构的深基坑工程的侧向变形预测与分析模型.利用MATLAB建立自适应指数平滑模型，自动计算和预测深基坑围护结构在不同深度的侧向变形.对比实测与预测的侧向变形数据，结果表明该自适应指数平滑模型在短期预测中具有精度较高、误差波动小的特点；同时采用预测数据的超越概率分析表明，深基坑侧向变形的分析模型同样适用于由自适应指数平滑法获得的预测数据，且随着位移限值远离最大监测位移值，分析精度将逐渐提高.通过利用椭圆搜索模式的反距离加权插值法，解决了样本点仅集中分布于深度方向的缺点，使插值结果更加平滑，结合基于深基坑侧向变形的分析模型，实现了围护结构空间曲面的变形预测，使评价反馈方式更加直观简洁.
Keyword ：
侧向变形 侧向变形 变形预测 变形预测 地下连续墙 地下连续墙 深基坑 深基坑 穿越率法 穿越率法 自适应指数平滑法 自适应指数平滑法
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| GB/T 7714 | 许莉 , 林鑫 , 徐杨 et al. 深基坑地下连续墙支护结构侧向变形的改进指数平滑法预测 [J]. | 应用基础与工程科学学报 , 2024 , 32 (04) : 1094-1107 . |
| MLA | 许莉 et al. "深基坑地下连续墙支护结构侧向变形的改进指数平滑法预测" . | 应用基础与工程科学学报 32 . 04 (2024) : 1094-1107 . |
| APA | 许莉 , 林鑫 , 徐杨 , 刘智 , 陈福全 , 王草 et al. 深基坑地下连续墙支护结构侧向变形的改进指数平滑法预测 . | 应用基础与工程科学学报 , 2024 , 32 (04) , 1094-1107 . |
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The traditional reinforced concrete canopy using cast-in-place (CIP) technology, is associated with problems such as long construction period, high environmental pollution, and low construction quality. Prefabricated assembly technology, due to its modern and highly industrialized characteristics, provides a promising solution to address the mentioned challenges. In this study, an innovative Ultra High-Performance concrete (UHPC)-filled grouted corrugated duct connection (UGCDC) approach was introduced for prefabricated canopy beam-column joints, considering the structural characteristics of the canopy. To evaluate the seismic behavior of canopy beam-column joints utilizing the UGCDC method, three comprehensive full-scale quasi-static experiments were conducted. Meanwhile, relevant seismic behavior indexes were extracted from the hysteresis curve, and the seismic performance of canopy joints was assessed by analyzing the effects of different research parameters on seismic behavior indicators. In addition, based on the OpenSees platform, a fiber finite element model (FEM) was established that incorporated the bond-slip behavior at the UGCDC joint. The research results indicated that the seismic behavior of canopy beam-column joints using UGCDC is basically consistent with that of CIP joints, and setting a shear key in UGCDC joints can improve ductility by 22.4 %. In terms of bearing capacity, there is not much difference among the three specimens, but in terms of initial stiffness, the specimen using UGCDC and shear key and the specimen using UGCDC have increased by 6.0 % and 9.6 % compared to CIP specimen, respectively. The developed FEM can predict the hysteresis characteristic of canopy joints using UGCDC. UGCDC method is a reliable connection form for canopy beam-column connection joint, which is suitable for medium to high intensity earthquake areas. Finally, a seismic performance assessment method of prefabricated canopy beam-column joints using UGCDC was proposed. © 2024 Elsevier Ltd
Keyword ：
Beam-column joints Beam-column joints Prefabricated canopy Prefabricated canopy Seismic performance Seismic performance Simplified fiber model Simplified fiber model UHPC-Filled grouted corrugated ducts connection UHPC-Filled grouted corrugated ducts connection
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| GB/T 7714 | Su, S. , Zhang, G. , Han, Q. et al. Quasi-static tests of full-scale precast canopy beam-column joints with UHPC-filled grouted corrugated ducts connection [J]. | Journal of Building Engineering , 2024 , 96 . |
| MLA | Su, S. et al. "Quasi-static tests of full-scale precast canopy beam-column joints with UHPC-filled grouted corrugated ducts connection" . | Journal of Building Engineering 96 (2024) . |
| APA | Su, S. , Zhang, G. , Han, Q. , Xu, L. , Zhou, D. , Du, X. . Quasi-static tests of full-scale precast canopy beam-column joints with UHPC-filled grouted corrugated ducts connection . | Journal of Building Engineering , 2024 , 96 . |
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为克服大跨度斜拉桥黏滞阻尼器优化设计效率低、多个相互制约的减震控制目标的问题难以权衡,基于遗传算法的"变异"方法,提出了改进多目标粒子群算法来进行阻尼器参数优化设计.建立大跨度斜拉桥的有限元模型,开展了全桥地震响应分析,根据抗震需求在桥梁纵向设置黏滞阻尼器;分别建立了塔底弯矩、阻尼力和梁端位移的减震响应与阻尼器参数之间的响应面数学模型;以减震响应面模型为研究对象,通过该算法进行阻尼器参数全局自动寻优分析,确定了阻尼器的最优参数,并与采用参数敏感性分析方法确定的一组阻尼参数进行对比分析.研究结果表明:该优化方法具有计算精度好、优化效率高和更好地权衡多个相互制约的减震控制目标的优点;通过优化算法获得的阻尼器参数组合相比采用参数敏感性分析方法获得的阻尼参数组合的减震响应,塔底弯矩增大1.73%,阻尼力减小5.97%,梁端位移减小1.66%;在无需多次有限元试算的基础上确定了更高精度的阻尼器优化参数组合,在提高减震效果的同时大大提升了计算效率.
Keyword ：
响应面法 响应面法 多目标优化 多目标优化 改进粒子群算法 改进粒子群算法 斜拉桥 斜拉桥 桥梁工程 桥梁工程 黏滞阻尼器 黏滞阻尼器
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| GB/T 7714 | 许莉 , 李煜民 , 丁自豪 et al. 采用改进多目标粒子群算法的斜拉桥阻尼器参数优化 [J]. | 振动工程学报 , 2024 , 37 (6) : 1006-1014 . |
| MLA | 许莉 et al. "采用改进多目标粒子群算法的斜拉桥阻尼器参数优化" . | 振动工程学报 37 . 6 (2024) : 1006-1014 . |
| APA | 许莉 , 李煜民 , 丁自豪 , 刘耿耿 , 刘康 , 贾宏宇 . 采用改进多目标粒子群算法的斜拉桥阻尼器参数优化 . | 振动工程学报 , 2024 , 37 (6) , 1006-1014 . |
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为解决组合箱梁横向裂缝对结构安全的潜在影响，利用ABAQUS程序建立钢-工程水泥基复合材料(Engineered Cementitious Composite,简称ECC)组合箱梁的数值模型，揭示钢-ECC组合箱梁在受力过程中剪力滞的变化，并分析剪力滞效应的影响因素。研究结果显示，随着荷载增大，钢-ECC组合箱梁的剪力滞效应逐渐加剧，但当ECC翼缘板应变达到极限状态时，剪力滞效应开始趋于稳定。通过适当降低翼缘板的宽度与厚度，或增大箱梁腹板的高度，可以有效减轻钢-ECC组合箱梁的剪力滞效应。相较于两点对称荷载，集中荷载会导致更大的剪力滞效应。
Keyword ：
剪力滞效应 剪力滞效应 结构工程 结构工程 钢-ECC组合箱梁 钢-ECC组合箱梁
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| GB/T 7714 | 陈婕妤 , 许莉 , 杨明清 et al. 考虑剪力滞效应的钢-ECC组合箱梁数值分析 [J]. | 水利与建筑工程学报 , 2024 , 22 (03) : 204-209 . |
| MLA | 陈婕妤 et al. "考虑剪力滞效应的钢-ECC组合箱梁数值分析" . | 水利与建筑工程学报 22 . 03 (2024) : 204-209 . |
| APA | 陈婕妤 , 许莉 , 杨明清 , 张广达 , 侯思远 . 考虑剪力滞效应的钢-ECC组合箱梁数值分析 . | 水利与建筑工程学报 , 2024 , 22 (03) , 204-209 . |
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The adaptive finite element limit analysis (AFELA) method was employed to simulate the active failure mechanisms and plastic region distribution properties under complex backfill conditions to study the active earth pressure of backfill near a firm slope on gravity walls rotating about the bottom. The simulation results revealed that the backfill progressively fails from top to bottom and the backfill in the area above the failure surface enters a plastic state. The slip -line method was combined with the pseudo -static technique to compute the seismic active earth pressure. Compared with the traditional limit analysis method and limit equilibrium method, the seismic slip line method does not need to pre -assume the failure mechanisms. The reliability and rationality of the method are confirmed by comparing the computation results of the seismic slip line method with the computation results of the finite element limit analysis method, the existing experimental data, and the existing theoretical solutions. Furthermore, the impacts of parameters such as backfill geometries, seismic acceleration, and interface strength on seismic active earth pressure are discussed in detail.
Keyword ：
Narrow soil Narrow soil Rotation about the bottom Rotation about the bottom Seismic active earth pressure Seismic active earth pressure Slip-line method Slip-line method
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| GB/T 7714 | Chen, Fu-quan , Chen, Chang , Kang, Wu-zhen et al. Slip-line solution to seismic active earth pressure of narrow c- φ soils on gravity walls rotating about the bottom [J]. | SOIL DYNAMICS AND EARTHQUAKE ENGINEERING , 2024 , 181 . |
| MLA | Chen, Fu-quan et al. "Slip-line solution to seismic active earth pressure of narrow c- φ soils on gravity walls rotating about the bottom" . | SOIL DYNAMICS AND EARTHQUAKE ENGINEERING 181 (2024) . |
| APA | Chen, Fu-quan , Chen, Chang , Kang, Wu-zhen , Xu, Li , Li, Xi-bin . Slip-line solution to seismic active earth pressure of narrow c- φ soils on gravity walls rotating about the bottom . | SOIL DYNAMICS AND EARTHQUAKE ENGINEERING , 2024 , 181 . |
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为研究三种纤维混杂对高韧性水泥基复合材料(ECC)弯曲性能的影响，将聚乙烯(PE)纤维与钢纤维(SF)、玄武岩纤维(BF)混杂，通过21组四点弯曲试验，分析试件的受力、破坏过程及不同混杂纤维掺量对弯曲性能的影响，并将弯曲性能试验结果与拉伸性能试验结果进行比对，得到混杂纤维ECC的弯、拉对应关系。研究结果表明：与单掺PE相比，复掺纤维可有效提高ECC的弯曲极限强度，但会损失一定程度的延性。钢纤维掺量对延性性能影响较大，建议钢纤维掺量不超过0.4%,且总纤维掺量不超过2.3%。玄武岩纤维对混杂纤维ECC起到良好的增强、增加延性作用。基于弯-拉关系得到的极限拉伸应变与试验值吻合良好，因此四点弯曲试验可以代替单轴拉伸试验来评价混杂纤维ECC的力学性能。
Keyword ：
弯曲性能 弯曲性能 水泥基复合材料 水泥基复合材料 混杂纤维 混杂纤维 聚乙烯纤维 聚乙烯纤维 荷载-挠度曲线 荷载-挠度曲线
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| GB/T 7714 | 池善庆 , 江正航 , 林若鸣 et al. 混杂纤维高韧性水泥基复合材料弯曲性能试验研究 [J]. | 水利与建筑工程学报 , 2024 , 22 (03) : 174-181,195 . |
| MLA | 池善庆 et al. "混杂纤维高韧性水泥基复合材料弯曲性能试验研究" . | 水利与建筑工程学报 22 . 03 (2024) : 174-181,195 . |
| APA | 池善庆 , 江正航 , 林若鸣 , 许莉 . 混杂纤维高韧性水泥基复合材料弯曲性能试验研究 . | 水利与建筑工程学报 , 2024 , 22 (03) , 174-181,195 . |
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This study proposes to use series-type tuned mass damper inerters (STMDIs) to suppress the bending and torsional vibrations of the bridge girder. Three potential layout schemes of STMDIs suitable for being installed inside the bridge girder are investigated. The governing equations of the bridge with spatially distributed STMDIs are established in modal coordinate. The optimal design strategy for suppressing the multiple-mode vibration of the bridge girder by using spatially distributed STMDIs is proposed. The feasibility of these schemes is validated and compared in terms of control efficiency, space feasibility, and frequency band property. Time-domain validation through embedding the STMDIs into the finite element model of the bridge is also conducted. The results show that STMDIs have a much better control efficiency and frequency band property than TMDI and TMD. It can simultaneously be tuned to suppress the bending and torsional vibrations of the bridge at different bending-to-torsional frequency ratios. And the space performance of this device is also quite favorable. Through spatially distributing the multiple STMDIs, the vibration of the bridge can be further reduced.
Keyword ：
Bending and torsional vibrations Bending and torsional vibrations Control Control Long-span bridge Long-span bridge STMDIs STMDIs Wind effect Wind effect
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| GB/T 7714 | Li, Zhenchuan , Xu, Kun , Bi, Kaiming et al. Suppressing wind-induced bending and torsional vibrations of long-span bridges by series-type tuned mass damper inerters (STMDIs) [J]. | STRUCTURES , 2023 , 48 : 918-933 . |
| MLA | Li, Zhenchuan et al. "Suppressing wind-induced bending and torsional vibrations of long-span bridges by series-type tuned mass damper inerters (STMDIs)" . | STRUCTURES 48 (2023) : 918-933 . |
| APA | Li, Zhenchuan , Xu, Kun , Bi, Kaiming , Xu, Li , Han, Qiang . Suppressing wind-induced bending and torsional vibrations of long-span bridges by series-type tuned mass damper inerters (STMDIs) . | STRUCTURES , 2023 , 48 , 918-933 . |
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This paper presents the dynamic response analyses of a special long-span cable-stayed bridge with the main span length of 680 (m) subjected to pulse-type ground motions. The 1/100 scaled shaking table test are developed herein to verify the accuracy and correctness of the 3D finite element (FE) model of the examined long-span cable-stayed bridge on the software platform of SAP2000. To systematically investigate the influence on the seismic responses and on the selection of the nonlinear viscous damper parameters of the employed long-span cable-stayed bridge both the near-fault pulse-type ground motions and the far-field ground motions are selected as the seismic inputs of FE model. Some important conclusions are drawn that the near-fault ground motions usually causes the larger peak responses (e.g., Tower top displacement, girder end displacement, and moment of tower bottom) of the long-span cable-stayed bridge compared with the far-field motions, namely the near-fault ground motions are more destructive to the structures. The displacement responses can be amplified approximately 2-3 times and the damper parameters (Damping coefficient C and damping index alpha) of nonlinear viscous dampers can be affected by the ground motion characteristics. The damper parameter values are changed from the C = 3000 and alpha = 0.3 in far-field earthquakes to the C = 6000 and alpha = 0.2 in near-fault earthquakes, namely the near-fault ground motions obviously increase the demand of energy consumption of general nonlinear viscous dampers.
Keyword ：
Long-span cable-stayed bridge Long-span cable-stayed bridge Pulse-type ground motion Pulse-type ground motion Seismic response Seismic response Shaking table test Shaking table test Structure analysis Structure analysis
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| GB/T 7714 | Jia, Hongyu , Liu, Zhi , Xu, Li et al. Dynamic response analyses of long-span cable-stayed bridges subjected to pulse-type ground motions [J]. | SOIL DYNAMICS AND EARTHQUAKE ENGINEERING , 2023 , 164 . |
| MLA | Jia, Hongyu et al. "Dynamic response analyses of long-span cable-stayed bridges subjected to pulse-type ground motions" . | SOIL DYNAMICS AND EARTHQUAKE ENGINEERING 164 (2023) . |
| APA | Jia, Hongyu , Liu, Zhi , Xu, Li , Bai, Hao , Bi, Kaiming , Zhang, Chao et al. Dynamic response analyses of long-span cable-stayed bridges subjected to pulse-type ground motions . | SOIL DYNAMICS AND EARTHQUAKE ENGINEERING , 2023 , 164 . |
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Surface ruptures resulting from seismic faulting have the potential to inflict substantial damage to bridges straddling fault lines; hence, it is imperative to investigate the impact of ground motions documented on either side of fault rupture planes-termed as across-fault ground motion-on the seismic resilience of bridges. In this paper, the object of study is a three-span, simply supported beam bridge traversing a strike-slip fault. Utilizing the LS-DYNA finite element software platform, a sophisticated three-dimensional finite element model of the selected bridge is constructed, meticulously accounting for material damage nonlinearity and structural collision contact nonlinearity. A synthetic across-fault ground motion serves as the excitation for the seismic analysis of the bridge, systematically examining the influence of the fault-crossing angle (FCA), fault sliding rise time, and ground surface permanent rupture displacement on the dynamic response and seismic damage incurred by the simply supported beam bridge. The findings demonstrate that a diminutive fault-crossing angle (FCA) corresponds to an elevated risk of longitudinal beam collapse when a simply supported beam bridge does not intersect a fault vertically. The impact of the fault sliding rise time on the magnitude of seismic response and damage sustained by the simply supported beam bridge is relatively minuscule and can be neglected. Conversely, the ground surface permanent rupture displacement profoundly influences the dynamic response and seismic damage of the bridge. The emergence of fling-step pulses from the development of ground surface permanent rupture displacement amidst seismic activity induces a shift in failure mode-from the designer-intended bending failure to an unforeseen shear failure.
Keyword ：
Across-fault ground motion Across-fault ground motion Damage analysis Damage analysis displacement displacement Fault-crossing simply-supported beam bridge Fault-crossing simply-supported beam bridge Ground surface permanent rupture Ground surface permanent rupture Material nonlinearity Material nonlinearity
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| GB/T 7714 | Jia, Hongyu , Wu, Weichang , Xu, Li et al. Numerical simulation and damaged analysis of a simply-supported beam bridge crossing potential active fault [J]. | ENGINEERING STRUCTURES , 2023 , 301 . |
| MLA | Jia, Hongyu et al. "Numerical simulation and damaged analysis of a simply-supported beam bridge crossing potential active fault" . | ENGINEERING STRUCTURES 301 (2023) . |
| APA | Jia, Hongyu , Wu, Weichang , Xu, Li , Zhou, Youquan , Zheng, Shixiong , Zhao, Canhui . Numerical simulation and damaged analysis of a simply-supported beam bridge crossing potential active fault . | ENGINEERING STRUCTURES , 2023 , 301 . |
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The cracking moment and deflection of prefabricated bridge deck panels (PBDPs) with connections are the critical indexes to assess their crack resistance and reliability. This paper presented improved prediction models for estimating the flexural performance, especially cracking moment and deflection, of PBDPs connected with CFRP tendons and UHPC grout. Afterwards, comparisons between experimental data and predicted cracking moment, moment capacity, and moment-deflection curves showed desired agreement. In addition, a finite element (FE) model was established and its reliability was verified by the comparison of moment-deflection curves between the FE model, predicted results, and tests. A parametric study was conducted to evaluate the influence of design parameters on flexural performance. The results show that the existing equations in the literature for calculating the effective moment of inertia cannot accurately predict that of PBDPs with novel connections. The improved performance prediction models have reasonable accuracy for flexural performance, including cracking moments, flexural capacity, and moment-deflection responses. The diameter and initial stress of CFRP, as well as concrete strength, have a positive influence on the performance of PBDPs connected with the proposed connections under bending moment.
Keyword ：
Flexural performance prediction model Flexural performance prediction model material material Moment-deflection curves Moment-deflection curves Novel connection with high performance Novel connection with high performance Parametric study Parametric study prefabricated bridge deck panels (PBDPs) prefabricated bridge deck panels (PBDPs)
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| GB/T 7714 | Hu, Menghan , Jia, Zhenlei , Xu, Li et al. Flexural performance predictions of prefabricated bridge deck panels connected with CFRP tendons and UHPC grout [J]. | ENGINEERING STRUCTURES , 2023 , 285 . |
| MLA | Hu, Menghan et al. "Flexural performance predictions of prefabricated bridge deck panels connected with CFRP tendons and UHPC grout" . | ENGINEERING STRUCTURES 285 (2023) . |
| APA | Hu, Menghan , Jia, Zhenlei , Xu, Li , Han, Qiang , Jiao, Chiyu , Long, Peiheng . Flexural performance predictions of prefabricated bridge deck panels connected with CFRP tendons and UHPC grout . | ENGINEERING STRUCTURES , 2023 , 285 . |
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