Engineering Structures最新文献_第9页

New finite-difference-based discrete models for Euler and Timoshenko beam problems Euler和Timoshenko梁问题的新的有限差分离散模型

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures

Pub Date : 2026-02-02 DOI: 10.1016/j.engstruct.2025.122063

Z.W. Song , Z. Yaw , S.K. Lai , C.M. Wang

Although the finite difference method (FDM) has been widely employed in structural analysis for its rigorous mathematical formulation, its underlying physical interpretation remains a topic of continued investigation. Historically, the Hencky bar-chain model (HBM) was proposed as a discrete physical analogue of the central first-order FDM, representing a system of rigid segments interconnected by frictionless hinges and elastic rotational springs. However, the end rotational springs in the HBM do not correspond to actual physical springs, further clarification is thus required. In this study, we develop two novel finite-difference-based discrete models (FDDMs) tailored for Euler−Bernoulli and Timoshenko beam problems. By applying appropriate finite difference schemes to discretize the spatial derivatives in the potential energy function, these FDDMs emerge as well-posed and fully independent discrete beam models incorporating actual end springs. Consequently, they serve as true physical counterparts to their respective FDMs. This work not only introduces innovative discrete beam models aligned with finite difference formulations, but also offers a deeper understanding of the method.

尽管有限差分法（FDM）因其严格的数学公式在结构分析中得到了广泛的应用，但其潜在的物理解释仍然是一个继续研究的主题。历史上，Hencky棒链模型（HBM）被提出作为中心一阶FDM的离散物理模拟，代表由无摩擦铰链和弹性旋转弹簧连接的刚性段系统。然而，在HBM的末端旋转弹簧不对应于实际的物理弹簧，因此需要进一步澄清。在本研究中，我们针对Euler - Bernoulli和Timoshenko梁问题开发了两种新的基于有限差分的离散模型（FDDMs）。通过应用适当的有限差分格式来离散势能函数的空间导数，这些fddm成为包含实际端弹簧的良好定姿和完全独立的离散梁模型。因此，它们作为各自fdm的真正物理对应物。这项工作不仅引入了与有限差分公式一致的创新离散梁模型，而且还提供了对该方法的更深层次的理解。

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引用次数: 0

Predicting the remaining useful life of adhesively bonded composite structures using guided waves and a multi-connected approximate Bayesian model 利用导波和多连接近似贝叶斯模型预测粘接复合材料结构的剩余使用寿命

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures

Pub Date : 2026-02-02 DOI: 10.1016/j.engstruct.2026.122254

Yang Zhang , Maciej Radzieński , Jiyue Chen , Ziping Wang , Wiesław Ostachowicz

Adhesive bonding is one of the most utilised methods for combining composites. Accurate diagnosis and prognosis of the health state and remaining useful life (RUL) of the bonded area is crucial to ensuring the long-term service of structures. The absence of acceptable damage detection theories and targeted RUL prediction models has impeded the extensive application of adhesive composite structures. Guided waves and machine learning (ML) represent two of the most promising methodologies for fault detection and RUL prediction within structural health monitoring. Their integration significantly enhances the accuracy of diagnosis-prediction research. However, few focus on model optimisation and combining diagnosis and prognosis, with extensive research relying on Bayesian methods for prediction, increasing the complexity and difficulty of model training. This study proposes a diagnosis-prognosis framework that integrates convolutional neural networks and long short-term memory models, employing the dropout to approximate the Bayesian method to represent uncertainty, followed by the Monte Carlo sampling to achieve RUL prediction. The primary data source of ML is obtained by utilising an extended finite element method with user-defined subroutines to simulate crack growth. Comparative analysis of different RUL prediction models shed light on the proposed model’s advantages in computational speed and complexity while demonstrating high accuracy in predicting end of life. Limited experimental and simulation data test results indicate that the proposed model can identify faults in the bonded area, achieving nearly 16.43 % higher accuracy than Bayesian dynamic models.

粘接是复合材料最常用的结合方法之一。准确诊断和预测保税区结构的健康状态和剩余使用寿命对保证结构的长期使用至关重要。由于缺乏可接受的损伤检测理论和有针对性的损伤损伤预测模型，阻碍了粘接复合材料结构的广泛应用。导波和机器学习（ML）代表了结构健康监测中故障检测和RUL预测的两种最有前途的方法。它们的整合显著提高了诊断预测研究的准确性。然而，很少关注模型优化和诊断与预后相结合，大量研究依赖贝叶斯方法进行预测，增加了模型训练的复杂性和难度。本研究提出了一个集成卷积神经网络和长短期记忆模型的诊断-预后框架，采用dropout近似贝叶斯方法来表示不确定性，然后采用蒙特卡罗抽样来实现RUL预测。机器学习的主要数据源是利用扩展有限元法和用户自定义的子程序来模拟裂纹扩展。通过对不同RUL预测模型的对比分析，揭示了该模型在计算速度和复杂性方面的优势，同时显示了预测寿命结束的准确性。有限的实验和仿真数据测试结果表明，该模型能较好地识别保税区的故障，比贝叶斯动态模型的准确率提高了近16.43 %。

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引用次数: 0

A semi-empirical formula for rigid projectile penetration into large-particle rubble concrete 刚性弹丸侵彻大颗粒碎石混凝土的半经验公式

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures

Pub Date : 2026-02-02 DOI: 10.1016/j.engstruct.2026.122257

Xiaolong Chen , Li Chen , Huu-Tai Thai , Qin Fang

This paper proposes a semi-empirical formula to predict the penetration depth of rigid projectile into large-particle rubble concrete (LRC). Full-scale experiments and mesoscale simulations were conducted to evaluate the effects of rubble diameter, strength, and volume fraction on the penetration depth into the target. The findings from the experimental results and numerical simulations were then employed to develop the semi-empirical formula based on a dual-parameter correction approach (DPCA), which was introduced to integrate both strength and size effects. The proposed formula was validated with experimental results and those predicted by available formulas. The validation indicated that the present formula could accurately predict the penetration depth of a wide range of diameters of the rigid projectile from 30 mm to over 250 mm, which is well beyond the limit of current formulas.

提出了刚性弹丸对大颗粒碎石混凝土侵彻深度的半经验预测公式。通过全尺寸试验和中尺度模拟，评估了碎石直径、强度和体积分数对穿透目标深度的影响。然后，利用实验结果和数值模拟的结果，建立了基于双参数校正方法（DPCA）的半经验公式，该方法同时引入了强度和尺寸效应。用实验结果和现有公式的预测结果对所提公式进行了验证。验证表明，该公式能较准确地预测30 mm ~ 250 mm以上大直径刚性弹的侵深，远远超出了现有公式的极限。

引用次数: 0

Parametric optimization-based design and testing of 3D printed stainless steel circular X-joints 基于参数优化的3D打印不锈钢圆形x形接头设计与测试

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures

Pub Date : 2026-02-02 DOI: 10.1016/j.engstruct.2026.122148

Wenkang Zuo , Man-Tai Chen , Ou Zhao , Leroy Gardner

The integration of topology optimization (TO) and metal 3D printing offers transformative opportunities for the design and fabrication of steel joints in spatial structures. This study develops a parametric joint TO-based design workflow, incorporating subdivision surface technology, the Bi-directional Evolutionary Structural Optimization (BESO) algorithm and advanced re-engineering techniques. Four X-joints for connecting circular tubes were optimized and then fabricated using Selective Laser Melting (SLM) with 316 L austenitic stainless steel powder. To characterize the mechanical properties of the printed material, uniaxial tensile coupon tests were conducted in five loading orientations. The 3D printed steel optimized X-joints were tested under axial compression, with the deformations and the strains captured using 3D Digital Image Correlation. The structural response was assessed in terms of strain distribution, load-deformation behavior, joint strength and ductility, as well as failure mode. The results demonstrate that the 3D printed TO designed X-joints exhibit a more uniform distribution of stress, superior ductility and more efficient load transfer compared to conventional tubular joints. This excellent structural performance is due to the inherent high ductility of SLM-fabricated 316 L stainless steel, the smooth geometric transitions achieved by means of subdivision surface technology, and the optimized material layout from BESO-based TO. The findings validate the feasibility of 3D printing TO designed joints for next-generation structural systems, with potential benefits in structural performance, fabrication efficiency and design flexibility.

拓扑优化（TO）和金属3D打印的集成为空间结构中钢接头的设计和制造提供了变革性的机会。本研究结合细分曲面技术、双向进化结构优化（BESO）算法和先进的再工程技术，开发了一种基于参数化联合to的设计工作流。采用316 L奥氏体不锈钢粉末对4个连接圆形管的x形接头进行了优化，并采用选择性激光熔化（SLM）法制备。为了表征打印材料的力学性能，在五个加载方向上进行了单轴拉伸试验。在轴向压缩条件下对3D打印的优化钢x形接头进行了测试，并利用3D数字图像相关技术捕获了其变形和应变。从应变分布、荷载-变形行为、节点强度和延性以及破坏模式等方面对结构响应进行了评估。结果表明，与传统管状接头相比，3D打印TO设计的x形接头具有更均匀的应力分布、更好的延展性和更有效的载荷传递。这种优异的结构性能是由于slm制造的316 L不锈钢固有的高延展性，通过细分表面技术实现的平滑几何过渡，以及从基于beso到优化的材料布局。研究结果验证了3D打印TO设计关节用于下一代结构系统的可行性，在结构性能、制造效率和设计灵活性方面具有潜在的优势。

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引用次数: 0

Finite element modelling of the structural in-plane shear behaviour of hybrid timber–glass diaphragms for BIPV applications BIPV应用中混合木-玻璃隔板结构面内剪切特性的有限元模拟

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures

Pub Date : 2026-02-02 DOI: 10.1016/j.engstruct.2026.122198

Tine Engelen , Dries Byloos , Jose Henriques , Bram Vandoren

Innovative structural systems, such as timber–glass diaphragms with integrated photovoltaics, can only be adopted in practice if reliable and validated design methodologies are established. To this end, the present study develops and validates two structural finite element modelling strategies that aim to balance between computational efficiency and predictive accuracy. The hybrid timber–glass system under consideration, where the glass panel contributes to the in-plane stiffness of a timber frame, has been experimentally investigated in a previous study [Engelen, 2025] and serves as the basis for model calibration and validation.

The first model, developed in COMSOL Multiphysics, is calibrated using small-scale connection tests. The adhesive bonding between the timber and glass is modelled with a hyperelastic material model, including phase-field damage to model material failure. This detailed modelling approach accurately predicts the overall stiffness and strength of the diaphragms and enables detailed analysis of strain distributions through the glass thickness and within the solar cells. Despite its high precision, the model’s computational cost is substantial. Therefore, a second, simplified model is created in an engineering software package, Buildsoft Diamonds. This enables faster assessments in engineering practice, offering acceptable accuracy with less computational effort. Finally, both models are employed in a parametric study to identify which design factors, such as aspect ratio, glass thickness, and adhesive size, affect the stiffness of the diaphragms.

创新的结构系统，如集成光伏的木玻璃隔板，只有在建立可靠和有效的设计方法的情况下才能在实践中采用。为此，本研究开发并验证了两种结构有限元建模策略，旨在平衡计算效率和预测精度。在之前的一项研究[Engelen， 2025]中，已经对正在考虑的混合木材-玻璃系统进行了实验研究，其中玻璃板有助于木结构框架的平面内刚度，并作为模型校准和验证的基础。第一个模型是在COMSOL Multiphysics中开发的，使用小规模连接测试进行校准。采用超弹性材料模型对木材与玻璃之间的粘接进行了建模，包括相场损伤和模型材料失效。这种详细的建模方法可以准确地预测隔膜的整体刚度和强度，并可以详细分析玻璃厚度和太阳能电池内部的应变分布。尽管该模型的精度很高，但其计算成本也很高。因此，在工程软件包Buildsoft Diamonds中创建了第二个简化模型。这使得在工程实践中更快的评估，以更少的计算工作量提供可接受的准确性。最后，将这两个模型用于参数化研究，以确定哪些设计因素（如纵横比、玻璃厚度和粘合剂尺寸）会影响隔膜的刚度。

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引用次数: 0

Large-scale testing of precast bridge deck girder repaired with shape memory alloy coupled prestressing plates 形状记忆合金耦合预应力板修复预制桥面梁的大规模试验

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures

Pub Date : 2026-02-01 DOI: 10.1016/j.engstruct.2026.122259

Dachina Gunasekaran, Bassem Andrawes

External prestressing is an effective repair strategy for flexural-deficient structural members. This study presents a novel external prestressing repair method using innovative Shape Memory Alloy-Coupled Prestressing Plates (SMA-CPP). A full-scale experimental investigation is conducted on two 15.24 m long decommissioned precast prestressed concrete deck girders to study the effect of the proposed repair method. The girders are first subjected to controlled loading under four-point bending to induce transverse cracks in their soffit. The first girder serves as the control, while the second girder is repaired using three 4.57 m long SMA-CPP units consisting of 6.3 mm SMA bars and conventional steel rebars. The three SMA-CPP units introduced a total external prestressing force of 91.4 kN, equivalent to 5.65 % of the internal prestressing force in the girder. Despite the relatively small external prestressing force applied, the repaired girder demonstrated significantly superior performance to the control girder under service and ultimate loads. Such performance is manifested by an over 50 % increase in the elastic load and displacement capacity of the repaired versus unrepaired girders. Furthermore, the repaired girder exhibited a notable improvement in initial and secant stiffness. These findings highlight the efficacy of the innovative SMA-CPP repair method for restoring the capacity of cracked PPC bridge girders.

外部预应力是一种有效的修复屈曲缺陷构件的策略。本文提出了一种新型的形状记忆合金耦合预应力板（SMA-CPP）外部预应力修复方法。对2根15.24 m长退役预制预应力混凝土桥面梁进行了全尺寸试验研究，研究了所提出的修复方法的效果。梁首先受到四点弯曲下的控制荷载，使其软肋产生横向裂缝。第一根梁作为控制梁，而第二根梁使用三个4.57 m长的SMA- cpp单元进行修复，该单元由6.3 mm SMA钢筋和常规钢筋组成。3个SMA-CPP单元施加的总外预应力为91.4 kN，相当于主梁内预应力的5.65 %。尽管所施加的外部预应力相对较小，但修复梁在使用和极限荷载下的性能明显优于控制梁。这种性能表现在修复后的梁与未修复的梁相比，弹性载荷和位移能力增加了50% %以上。此外，修复后的梁在初始刚度和割线刚度方面均有显著改善。这些研究结果强调了创新SMA-CPP修复方法对修复开裂的PPC桥梁梁的能力的有效性。

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引用次数: 0

Control of microvibration transmitting from ground to superstructures using a TMD-based pile-in-pile structure 基于tmd的桩中桩结构对地面至上部结构微振动的控制

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures

Pub Date : 2026-01-31 DOI: 10.1016/j.engstruct.2026.122241

Haoran Lu , Li Xiao , Ji Shi , Jacopo M. De Ponti , Raffaele Ardito , Yifei Xu , Zhigang Cao

Low-frequency environmental vibrations have attracted growing concern in densely populated cities due to their low attenuation rate and long wavelength. These factors pose a great challenge to the microvibration control for high-technology facilities. In this study, we propose a pile-in-pile (PIP) structure based on the non-conventional Tuned Mass Damper (TMD) concept, aiming to reduce the horizontal microvibration transmitting from the ground to superstructures. The natural modes of PIP structure are solved through the equivalent TMD model, providing an analytical basis to investigate the superstructure-substructure-soil interaction. Then, a numerical model is developed to evaluate the attenuation effectiveness of PIP structure, which is verified through comparison with existing studies. We comprehensively considered two environmental vibration scenarios, i.e., traffic loads and seismic waves, to investigate the attenuation effectiveness of the PIP structure in both the frequency domain and time domain. The results indicate that intense vibrations can be effectively controlled by transferring them to both the inner and outer piles through placing appropriate springs and dashpots. Under the action of traffic loads, the displacement and acceleration responses are primarily concentrated on the outer pile owing to the difficulty in transmitting external vibrations from the outer pile to the inner pile. In the case of seismic waves, the inner and outer piles act as substructures for each other, with vibrations being dissipated through appropriate connected devices. The mutual motion between inner pile and outer pile enhances the effective control of microvibrations, providing more insights towards the design of a well-performing large-scale TMD system.

低频环境振动具有衰减率低、波长长等特点，在人口密集的城市中受到越来越多的关注。这些因素对高技术设施的微振动控制提出了很大的挑战。本文提出了一种基于非常规调谐质量阻尼器（TMD）概念的桩中桩（PIP）结构，旨在减少从地面传递到上部结构的水平微振动。通过等效TMD模型求解PIP结构的自然模态，为研究上部结构-下部结构-土的相互作用提供了分析依据。然后，建立了一个数值模型来评估PIP结构的衰减效果，并通过与已有研究的比较验证了该模型的有效性。综合考虑交通荷载和地震波两种环境振动情景，研究PIP结构在频域和时域上的衰减效果。结果表明，通过设置适当的弹簧和减震装置，将强振动传递给内桩和外桩，可以有效地控制强振动。在交通荷载作用下，由于外界振动难以从外桩传递到内桩，位移和加速度响应主要集中在外桩。在地震波的情况下，内外桩相互充当子结构，振动通过适当的连接装置消散。内桩和外桩之间的相互运动增强了对微振动的有效控制，为设计性能良好的大型TMD系统提供了更多的见解。

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引用次数: 0

Dynamic responses and failure modes of ultra-high strength alkali-activated concrete slab under impact load 冲击荷载作用下超高强度碱活化混凝土板的动力响应及破坏模式

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures

Pub Date : 2026-01-31 DOI: 10.1016/j.engstruct.2026.122258

Haiyu He , Lihua Wu , Xudong Zhi , Feng Fan , Gang Ma , Rong Zhang

This study investigates the dynamic responses and failure modes of ultra-high strength alkali-activated concrete (UHSAAC) slab under impact load based on the multiple-scale collaborative experiment. The effects of impact velocity, hammer shape and steel fiber volume fraction on the dynamic responses and failure modes were investigated through the drop weight impact test. Combining with the scanning electron microscope (SEM) test, the strain rate effect mechanism and failure mechanism of slabs were revealed. The results indicated that the impact velocity, hammer contact area and fiber volume fraction influenced the dynamic responses and failure modes of slabs. The strain rate effect was attributed to the coupling effect of inertial effect and energy dissipation via the development of both surface macrocracks and internal microcracks. The bond-slip and fracture of fibers occurred during the impact process. The failure modes of slabs could be categorized into the global flexural failure, punching shear failure and flexure-punching shear failure, whose entire response process and corresponding characteristics were interrelated. Except for the global flexure failure, the displacement lag effect existed in both punching shear and flexure-punching shear failure due to the membrane tension effect at the inertial stage. The radial flexural cracks on bottom surface were first generated before the formation of circumferential crack in punching shear failure, and the formation of punching shear cone surface existed a difference in time and space. Eventually, the failure mechanisms of UHSAAC slabs were revealed from the micro and macroscale.

基于多尺度协同试验，研究了超高强碱活化混凝土（UHSAAC）板在冲击荷载作用下的动力响应及破坏模式。通过落锤冲击试验，研究了冲击速度、锤头形状和钢纤维体积分数对其动态响应和破坏模式的影响。结合扫描电镜（SEM）测试，揭示了应变率效应机理和板坯破坏机理。结果表明，冲击速度、锤头接触面积和纤维体积分数对板的动力响应和破坏模式有影响。应变速率效应是由于惯性效应和能量耗散的耦合作用而产生的。在冲击过程中，纤维发生粘结滑移和断裂。板的破坏模式可分为整体弯曲破坏、冲剪破坏和弯曲-冲剪破坏，它们的整个响应过程及其特征是相互关联的。除整体挠曲破坏外，由于惯性阶段膜张拉效应，在冲剪破坏和挠曲-冲剪破坏中均存在位移滞后效应。在冲剪破坏中，底面径向弯曲裂纹首先产生于周向裂纹形成之前，且冲剪锥面的形成存在时间和空间差异。最后，从微观和宏观两方面揭示了UHSAAC板的破坏机理。

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引用次数: 0

Restoration of fire-damaged high-performance concrete columns by post-fire water-CO2 cyclic curing 火灾后水-二氧化碳循环养护修复高性能混凝土柱

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures

Pub Date : 2026-01-30 DOI: 10.1016/j.engstruct.2026.122253

Hangqi Lou , Tiejun Liu , Dujian Zou , Ye Li

This study experimentally investigates the post-fire mechanical performance and recovery potential of high-performance concrete (HPC) columns exposed to standard fire conditions followed by water-CO₂ cyclic re-curing. The columns were subjected to one hour of heating according to the ISO 834 standard fire curve and subsequently re-cured for 30 days. A comprehensive evaluation was performed, including internal temperature profiling, surface damage observation, microstructural analysis, load-displacement response, and failure mode characterization. Results show that HPC columns with a lower water-to-binder ratio (W/B) suffered more severe internal damage due to higher peak temperatures and steeper thermal gradients. Consequently, their residual load-bearing capacity was more significantly reduced than that of columns with a higher W/B. The conventional 500 °C isotherm method effectively predicted the post-fire capacity of high-W/B columns but overestimated that of low-W/B columns, for which a 400 °C threshold provided a better approximation. Water-CO₂ cyclic re-curing markedly enhanced the mechanical recovery of fire-damaged columns by promoting rehydration and carbonation reactions, which filled coarsened pores, healed microcracks, and partially sealed macrocracks, thereby restoring structural integrity. After re-curing, the load-bearing capacities of the low- and high-W/B columns recovered to 67.3 % and 100.9 % of their original values, respectively.

本研究通过实验研究了高性能混凝土（HPC）柱在标准火灾条件下暴露后的力学性能和恢复潜力，然后进行水-二氧化碳循环再养护。柱按照ISO 834标准火焰曲线加热一小时，随后再固化30天。进行了全面的评估，包括内部温度分布、表面损伤观察、微观结构分析、载荷-位移响应和失效模式表征。结果表明：水胶比（W/B）越低的HPC柱由于峰值温度越高、热梯度越陡，内部损伤越严重；因此，它们的剩余承载能力比高W/B的柱更显着降低。传统的500°C等温线方法有效地预测了高w /B柱的火灾后容量，但高估了低w /B柱的容量，其中400°C阈值提供了更好的近似。水- co2循环再固化通过促进复水化和碳酸化反应，显著增强了火损柱的力学恢复，充填了粗化孔隙，修复了微裂缝，部分封闭了大裂缝，从而恢复了结构的完整性。再养护后，低w /B柱和高w /B柱的承载能力分别恢复到原来的67.3% %和100.9 %。

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引用次数: 0

Experimental and numerical study of flow field hydrodynamics in a corrugated plate sidewall steel aqueduct 波纹板边墙钢渡槽流场水力学试验与数值研究

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures

Pub Date : 2026-01-30 DOI: 10.1016/j.engstruct.2026.122239

Ye Peng , Hongye Gou , Zhuang Tan , Wenhao Li , Junming Wang , Yi Bao

Corrugated Plate Sidewall Steel Aqueduct (CPSSA) is a specialized hydraulic structure for water conveyance. This paper investigates the effects of fluid parameters and CPSSA design parameters on flow hydrodynamics via combined experiments and simulations. A water–structure efficiency index is introduced to optimize the design of CPSSA. A CPSSA model with a scale of 1:20 was designed and tested, and numerical simulations considering fluid–structure interactions were performed. The results indicate that the water velocity and corrugated plates significantly impact flow velocity distribution and boundary layer thickness. Increasing corrugation height induces vortex and increases shear zones, thereby reducing water conveyance efficiency. Moderate increase of corrugation pitch and width can enhance water conveyance efficiency and the stiffness of CPSSA. This study advances the knowledge for the design and optimization of CPSSA.

波纹板侧壁钢渡槽是一种专门用于输水的水工结构。本文通过实验与仿真相结合的方法研究了流体参数和CPSSA设计参数对流动流体力学的影响。引入水结构效率指标对CPSSA进行优化设计。设计并测试了1:20比例尺的CPSSA模型，并进行了考虑流固耦合的数值模拟。结果表明，水流速度和波纹板对流速分布和边界层厚度有显著影响。波纹高度增大，会产生涡流，增加剪切带，从而降低输水效率。适当增加波纹节距和波纹宽度，可以提高CPSSA的输水效率和刚度。本研究为CPSSA的设计和优化提供了理论依据。

引用次数: 0