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Investigating the Effects of Asphalt Aging on the Performance of Asphalt Mixtures Containing Steel Slag Aggregates (SSA) 研究沥青老化对含有钢渣集料(SSA)的沥青混合料性能的影响
IF 1.7 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-07-18 DOI: 10.1007/s40996-024-01547-x
Seyyed Amir Hoessein Beheshti, Hasan Taherkhani, Alireza Sarkar, Parham Hayati

Use of steel slag in asphalt mixtures has proved to be economically and environmentally beneficial. However, still some aspects of this application need more investigation. This study aimed to investigate the aging effect on some properties of asphalt mixture made by SSA and its comparison with conventional limestone aggregates (LA). Asphalt concrete mixtures with the same binder were made with SSA and LA, and were subjected to different aging conditions. Aging conditions included short-term on loose mixture, and long-term in 2 conditioning times of 5 and 7 days on compacted specimens. Then, the specimens were evaluated by Marshall test, indirect tensile strength (ITS) test, Cantabro abrasion loss test and semicircular bending (SCB) test to evaluate their resistance against rutting, moisture damage, raveling and fracture, respectively. Results reveal that the mixture made by SSA has more Marshall stability, Marshall quotient and ITS, and is more resistant against moisture damage and raveling and has higher fracture toughness and fracture energy than the mixture made by LA. Results also show that aging results in increase of Marshall stability, Marshall quotient and ITS and decrease of flow, moisture damage resistance, raveling resistance, fracture energy and fracture toughness. The effect of aging on the properties was found to vary with the type of aggregates. In general, the mixture containing SSA is less affected by aging than the mixture made by LA. However, for some properties the aging is more effective on the mixture containing SSA.

事实证明,在沥青混合物中使用钢渣既经济又环保。然而,这种应用的某些方面仍需进一步研究。本研究旨在调查钢渣(SSA)对沥青混合料某些性能的老化影响,并将其与传统的石灰石集料(LA)进行比较。使用 SSA 和 LA 制备了具有相同粘结剂的沥青混凝土混合料,并将其置于不同的老化条件下。老化条件包括松散混合料的短期老化和压实试样的 5 天和 7 天两种长期老化。然后,分别通过马歇尔试验、间接拉伸强度(ITS)试验、Cantabro 磨损试验和半圆弯曲(SCB)试验对试样进行评估,以评价其抗车辙、抗湿损、抗碾压和抗断裂性能。结果表明,与 LA 混合料相比,SSA 混合料具有更高的马歇尔稳定性、马歇尔商数和 ITS,更强的抗湿损和抗车辙能力,以及更高的断裂韧性和断裂能。结果还显示,老化会导致马歇尔稳定性、马歇尔商数和 ITS 增加,而流动性、抗湿损性、抗崩裂性、断裂能和断裂韧性降低。老化对性能的影响因集料类型而异。一般来说,含有 SSA 的混合料受老化的影响小于 LA 混合料。不过,在某些性能方面,老化对含有 SSA 的混合物更有效。
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引用次数: 0
Using Meta-Heuristic Optimization Algorithms to Determine Baseflow and Comparing Their Temporal Performance 使用元优化算法确定基流并比较其时间性能
IF 1.7 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-07-17 DOI: 10.1007/s40996-024-01558-8
Ramazan Acar, Kemal Sapliogu

Accurate and simple determination of baseflow is an extremely important issue. In this study, the baseflow levels of Göksu station number 1805 in the Seyhan basin were determined by calibrating the Lyne and Hollick, Chapman, Chapman and Maxwell methods available in the literature using meta-heuristic optimization methods. The meta-heuristic algorithms used for calibration in the study were run thirty times each. Thus the reliability, the reliability of the algorithms was tested with the standard deviations obtained. The study also measured the temporal performance of the algorithms. In addition, the baseflows of Göksu station were determined and their percentage rates were found separately according to all three methods and intuitive methods, and the results obtained were compared. By examining the results obtained in this section, the average baseflow rate of the basin was also determined. Furthermore, each phase of the study was repeated over a five-year period, with the objective of measuring its sustainability. Consequently, it has been demonstrated that the method can be employed over extended periods.

准确而简单地确定基流是一个极其重要的问题。本研究采用元启发式优化方法,对文献中的 Lyne 和 Hollick 法、Chapman 法、Chapman 和 Maxwell 法进行了校核,从而确定了塞罕盆地戈克苏 1805 号站的基流水位。研究中用于校准的元启发式算法各运行了 30 次。因此,通过获得的标准偏差测试了算法的可靠性。研究还测量了算法的时间性能。此外,还确定了格克苏站的基流,并根据三种方法和直观方法分别计算了基流的百分比率,并对所得结果进行了比较。通过研究这一部分得出的结果,还确定了流域的平均基流率。此外,每个阶段的研究都重复了五年,目的是衡量其可持续性。结果表明,这种方法可以长期使用。
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引用次数: 0
Recycled Coarse Aggregates in Concrete: A Comprehensive Study of Mechanical and Microstructural Properties 混凝土中的再生粗骨料:机械和微观结构特性的综合研究
IF 1.7 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-07-17 DOI: 10.1007/s40996-024-01539-x
Harish Panghal, Awadhesh Kumar

Addressing the increasing demand for concrete due to advancements in the construction sector and population growth, this research explores the critical intersection of waste management and sustainable construction practices. By incorporating recycled coarse aggregate (RCA) derived from construction and demolition waste into concrete, waste reduction and natural resource conservation is achieved. An innovative standard compaction method is utilized to investigate the complex dynamics of RCA's influence on concrete properties. Key parameters examined include workability, compressive strength, flexural strength, split tensile strength, microstructural characteristics (XRD, SEM, EDAX), and modulus of elasticity. A distinctive feature of this research involves systematically replacing conventional coarse aggregates with RCA at varying proportions: 0, 25, 50, 75, and 100%. The comprehensive analysis reveals significant improvements in the fresh, hardened, and microstructural properties of concrete. Results indicate a nuanced relationship between RCA replacement levels and concrete strength, with the optimal mixture at 25% RCA replacement (RCA 25) demonstrating notably higher compressive (11.56%), flexural (3.06%), and split tensile (5.17%) strengths compared to the control concrete. Additionally, RCA 25 exhibits an 8.91% increase in modulus of elasticity. XRD, SEM, and EDAX analyses provide insights into the underlying mechanisms, indicating that pozzolanic activity enhances strength at lower RCA replacement levels by producing more hydration products, while strength may decrease at higher replacement levels. The significance of this research lies in its novel methodology, addressing a critical gap in understanding the intricate relationships between RCA content and concrete performance. The findings strongly advocate for the judicious use of recycled materials in concrete, contributing to environmental conservation and the long-term resilience of construction materials.

随着建筑业的发展和人口的增长,对混凝土的需求也在不断增加,针对这一情况,本研究探讨了废物管理和可持续建筑实践之间的重要交叉点。通过在混凝土中加入从建筑和拆除废料中提取的再生粗骨料(RCA),实现了减少废物和保护自然资源的目的。研究采用了一种创新的标准压实方法来研究 RCA 对混凝土性能影响的复杂动态。研究的主要参数包括工作性、抗压强度、抗弯强度、劈裂拉伸强度、微观结构特征(XRD、SEM、EDAX)和弹性模量。这项研究的一个显著特点是系统地用不同比例的 RCA 替代传统的粗集料:0、25、50、75 和 100%。综合分析表明,混凝土的新拌、硬化和微观结构性能均有显著改善。结果表明,RCA 替代水平与混凝土强度之间存在微妙的关系,与对照混凝土相比,RCA 替代率为 25% 的最佳混合物(RCA 25)的抗压强度(11.56%)、抗弯强度(3.06%)和劈裂拉伸强度(5.17%)明显更高。此外,RCA 25 的弹性模量增加了 8.91%。XRD、SEM 和 EDAX 分析提供了对潜在机理的深入了解,表明在较低的 RCA 替代水平下,通过产生更多的水化产物,毛细管活性可提高强度,而在较高的替代水平下,强度可能会降低。这项研究的意义在于它采用了新颖的方法,填补了在理解 RCA 含量与混凝土性能之间错综复杂的关系方面的一个重要空白。研究结果有力地倡导了在混凝土中合理使用再生材料,为环境保护和建筑材料的长期适应性做出了贡献。
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引用次数: 0
Seismic Response Analysis of a New Staggered Story Isolated Structure Under Three-Dimensional Long-Period Earthquakes 新型交错层隔离结构在三维长周期地震下的地震响应分析
IF 1.7 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-07-13 DOI: 10.1007/s40996-024-01518-2
Dewen Liu, Yanping Zheng, Min Lei, Jibing Zhao

The new staggered story isolated structure (NSSIS) is a new structure developed from the base isolated structure and mid-story isolated structure. In this paper, a finite element model of an NSSIS was established and the dynamic response of the NSSIS under three-dimensional (3D) long-period earthquake waves was analyzed. As the tensile and compressive stress of the isolated bearings exceeded the limit value under the 3D long-period earthquake waves, the 3D isolated bearings were introduced and compared with the traditional horizontal isolated bearings. The results show that the earthquake response of the NSSIS under long-period earthquake waves were larger than ordinary earthquake wave. The earthquake response of structure under 3D earthquake waves was larger than that under one-dimensional (1D) and two-dimensional (2D) earthquake waves. After setting 3D isolated bearings, the earthquake response of the structure was reduced, the shock absorption performance of the structure was improved, the compressive and tensile stress of isolated bearings met the requirements. It can provide a reference for the study of the NSSIS under 3D long-period earthquake waves.

新型交错层隔震结构(NSSIS)是由底层隔震结构和中层隔震结构发展而来的一种新型结构。本文建立了交错层隔震结构的有限元模型,并分析了交错层隔震结构在三维长周期地震波下的动力响应。由于在三维长周期地震波下,隔震支座的拉应力和压应力都超过了极限值,因此引入了三维隔震支座,并与传统的水平隔震支座进行了比较。结果表明,NSSIS 在长周期地震波下的地震响应大于普通地震波。结构在三维地震波下的地震响应大于在一维(1D)和二维(2D)地震波下的地震响应。设置三维隔震支座后,结构的地震响应减小,结构的减震性能提高,隔震支座的压应力和拉应力满足要求。这为研究三维长周期地震波下的 NSSIS 提供了参考。
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引用次数: 0
Investigating the Technical Suitability of Gray Water in Concrete Production Based on Physical and Mechanical Properties 根据物理和机械性能研究灰水在混凝土生产中的技术适用性
IF 1.7 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-07-13 DOI: 10.1007/s40996-024-01550-2
Mehdi Torabi-Kaveh, Ali Falah, Vahab Amiri

This research investigated the suitability of gray water as a non-conventional water source in the concrete production. The findings showed that both gray and tap water can be considered as mixing water, but based on water quality indicators for industry usage, gray water cannot be used without restrictions to build reinforced concrete structures due to its high corrosive ability. Gray water had no significant effect on the slump and setting time of the concrete. The compressive strength of concrete made with tap water increases from 7 days to 28 days, while gray water concrete, after an increasing trend from 7 days to 14 days, reached its lowest value at 28 days (28.1 MPa). This decrease is due to high TDS values and impurities, which can lead to a decrease in compressive strength. Gray water concrete showed a significant loss in tensile strength compared to tap water concrete after 28 days of curing. The P-wave velocity of the tap water concrete sample increased with the increase in curing time, while the gray water sample decreased by 13% in 28 days. Microscopic studies revealed the formation of carbonate halos around carbonate aggregates due to alkaline reactions in both tap and gray water concretes. The carbonate halo has developed to the inner parts of the aggregates in the gray water sample, indicating greater intensity of alkaline reactions. This means the long-term strength of the concrete will likely suffer a significant loss.

这项研究调查了灰水作为非常规水源在混凝土生产中的适用性。研究结果表明,灰水和自来水都可作为拌合用水,但根据工业用水的水质指标,灰水由于具有高腐蚀性,不能无限制地用于建造钢筋混凝土结构。灰水对混凝土的坍落度和凝结时间没有明显影响。自来水混凝土的抗压强度在 7 天至 28 天期间不断增加,而灰水混凝土在 7 天至 14 天期间呈上升趋势,在 28 天时达到最低值(28.1 兆帕)。这一下降是由于高 TDS 值和杂质导致抗压强度下降。与自来水混凝土相比,灰水混凝土在 28 天养护后的抗拉强度明显下降。自来水混凝土样品的 P 波速度随着养护时间的增加而增加,而灰水样品在 28 天内下降了 13%。显微镜研究显示,在自来水和灰水混凝土中,由于碱性反应,碳酸盐骨料周围都形成了碳酸盐晕。在灰水样本中,碳酸盐晕向骨料内部发展,表明碱性反应的强度更大。这意味着混凝土的长期强度可能会大幅下降。
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引用次数: 0
Numerical Study on the Shear Resistance Behavior of Steel Plate Shear Walls with Full Height Opening and Different Configurations of Stiffeners 全高开口钢板剪力墙和不同配置加劲件的抗剪行为数值研究
IF 1.7 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-07-11 DOI: 10.1007/s40996-024-01531-5
Abdullah Davoudi-Kia, Ali Hasanzadeh, Reza Rezapour Mazandarani

Steel plate shear walls (SPSWs) are efficient options for lateral load-resisting systems in buildings. However, introducing opening(s) in the SPSWs results in a significant drop in their performance. To investigate the effects of introducing openings and adding stiffeners around them on the performance of SPSWs, thirty-three finite element-based models of stiffened SPSWs with full height opening were analyzed. These models had different steel plate thicknesses, opening aspect ratios, and stiffener configurations. Numerical results of this study agreed with the Plate-Frame Interaction (PFI) theory. It was found that adding stiffeners considerably increased shear stiffness and shear strength of SPSW. Furthermore, improvement in the shear load carrying capacity of the SPSW is significantly influenced by cross-sectional shape and even arrangement of the stiffeners. Finally, it was shown that SPSWs with a thicker steel plate are more sensitive to both the presence of the opening and its widening.

钢板剪力墙(SPSW)是建筑物抗侧载系统的有效选择。然而,在钢板剪力墙中引入开口会导致其性能显著下降。为了研究引入开口并在其周围添加加劲件对 SPSW 性能的影响,我们分析了 33 个基于有限元的全高开口加劲 SPSW 模型。这些模型具有不同的钢板厚度、开口长宽比和加劲件配置。研究的数值结果与板框相互作用(PFI)理论一致。研究发现,增加加强筋可显著提高 SPSW 的剪切刚度和剪切强度。此外,加强筋的横截面形状和均匀排列对提高 SPSW 的剪切承载能力有显著影响。最后,研究表明,钢板较厚的 SPSW 对开口的存在和扩大更为敏感。
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引用次数: 0
Analytical Evaluation of Natural Frequencies in Hollow-Core Slabs: A Practical Methodology for Civil Engineering Applications 空心板固有频率的分析评估:土木工程应用的实用方法
IF 1.7 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-07-10 DOI: 10.1007/s40996-024-01512-8
Carlos N. Zenatti, Guilherme S. Silveira, Gustavo M. S. Gidrão, Paulo Rogério Novak, Rúbia Mara Bosse, Laura Silvestro, Lara K. Marcos

This study presents an analytical methodology for predicting the natural frequencies of hollow-core slab panels, addressing a significant research and application need in structural engineering. The study suggests a numerical–experimental calibration utilizing the Finite Element Method (FEM) via ANSYS software to assess the modal response of hollow-core slabs validated according to literature study. Through the development of Irvine’s equation, this research proposes a simplified methodology for determining the natural frequency of slabs. The slabs were modeled as simply supported beams, and Irvine’s equations have been applied to simplify several degrees of freedom structure (SDOF) and determine the natural frequencies for various spans. The validation of the numerical–experimental model indicates a maximum error of 8.32% in the third vibration mode, demonstrating the accuracy and practicality of the proposed analytical method. This approach could be useful in determining the vibration serviceability presented in Brazilian Standard Procedure for the Design of Concrete Structures. It can help engineers and manufacturers to estimate structural compliance and vibration serviceability.

本研究提出了一种预测空心芯楼板固有频率的分析方法,解决了结构工程中的一项重要研究和应用需求。研究建议通过 ANSYS 软件利用有限元法(FEM)进行数值-实验校准,以评估根据文献研究验证的空心板模态响应。通过开发 Irvine 方程,本研究提出了一种确定板固有频率的简化方法。板被建模为简支梁,欧文方程被用于简化多个自由度结构(SDOF)并确定不同跨度的固有频率。数值-实验模型的验证结果表明,第三振动模式的最大误差为 8.32%,证明了所提出的分析方法的准确性和实用性。这种方法可用于确定《巴西混凝土结构设计标准程序》中提出的振动适用性。它可以帮助工程师和制造商估算结构顺应性和振动适用性。
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引用次数: 0
Experimental Investigation of Local Scour Around Inclined Bridge Piers on Clay-Sand Mixed Cohesive Sediment Bed in Clear-Water Conditions 清水条件下粘土-砂混合粘性沉积床倾斜桥墩周围局部冲刷的实验研究
IF 1.7 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-07-08 DOI: 10.1007/s40996-024-01529-z
Qadeer Ahmad, Usman Ghani

A few investigations on clear water local scour around vertical bridge piers on clay-sand mixed (cohesive sediment) beds are found in the literature. However, no research has been reported on local scour around inclined bridge piers for clay-sand mixed cohesive beds. This research work was carried out to investigate the impact of dual inclined bridge piers (convergent-vertical piers) on maximum scour depth installed in flow direction on four beds containing different clay contents from 20–80% with sand. Three different pier shapes of different cross sections were tested (circular, rectangular & diamond) in each case. The effect of inclination (0°, 5°, 10°, 15°, 20°) with the vertical on the same beds was analyzed and discussed. The results revealed a considerable reduction in maximum scour depth with inclined bridge piers in comparison with vertical bridge piers. The least scour depth was observed around 10° inclination for rectangular and circular shaped sections and 5° for diamond bridge pier. On average 53.25%, 57.25%, and 72% reduction in scour depth was observed for inclined rectangular, diamond, and circular bridge piers respectively as compared to the vertical bridge piers. The circular bridge pier proved the most effective inclined pier, exhibiting the least scour depth among the three pier shapes. Furthermore, no equation was found in the literature to predict the maximum scour depth around inclined bridge piers on clay-sand mixed beds, so three non-linear regression-based equations for three different upstream collinear piers as a function of clay content percentage and inclination were predicted which reasonably described the experimental data.

文献中发现了一些关于粘土-砂混合(粘性沉积物)河床上垂直桥墩周围清水局部冲刷的研究。然而,还没有关于粘土-砂混合粘性河床倾斜桥墩周围局部冲刷的研究报告。这项研究工作的目的是调查双斜桥墩(会聚-垂直桥墩)对在含有 20-80% 不同粘土含量(含沙量)的四个河床上沿水流方向安装的最大冲刷深度的影响。每种情况下都测试了三种不同截面形状的桥墩(圆形、矩形和菱形)。还分析和讨论了在相同河床上与垂直方向的倾角(0°、5°、10°、15°、20°)的影响。结果表明,与垂直桥墩相比,倾斜桥墩的最大冲刷深度大大减小。矩形和圆形桥墩在 10° 倾角附近的冲刷深度最小,菱形桥墩在 5° 倾角附近的冲刷深度最小。与垂直桥墩相比,倾斜的矩形、菱形和圆形桥墩的冲刷深度平均分别减少了 53.25%、57.25% 和 72%。圆形桥墩被证明是最有效的倾斜桥墩,在三种桥墩形状中冲刷深度最小。此外,在文献中没有发现任何方程可以预测粘土-砂混合河床上倾斜桥墩周围的最大冲刷深度,因此针对三个不同的上游对向桥墩,预测了三个与粘土含量百分比和倾斜度相关的非线性回归方程,这些方程合理地描述了实验数据。
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引用次数: 0
Structural Behavior of Concrete Columns Reinforced with BFRP Bars: Experimental Study and Predictive Models 用 BFRP 杆件加固的混凝土柱的结构行为:实验研究与预测模型
IF 1.7 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-07-08 DOI: 10.1007/s40996-024-01522-6
Fkrat Latif Hamid, Ali Ramadhan Yousif

In recent years, research has explored using glass fiber-reinforced polymer (GFRP) bars as a corrosion-resistant alternative to steel reinforcement in concrete columns. Design guidelines have been established in ACI 440.11–22 for GFRP bars. However, there's currently no specific code for Basalt fiber-reinforced polymer (BFRP) bars in concrete columns due to limited experimental data. This study investigates using BFRP bars and ties as an alternative to steel reinforcement in concrete columns. It presents results from testing 11 columns under concentric loads. The test variables included the longitudinal BFRP reinforcement ratio, BFRP tie spacings, BFRP tie diameter, and reinforcement type. The experimental results showed a resemblance in the performance of concrete columns reinforced with BFRP and steel bars. Longitudinal BFRP bars contributed between 6.4 and 17.2% to the ultimate load-carrying capacity. A reduction in tie spacing was observed to slightly improve the load-carrying capacity. Moreover, when using the same volumetric reinforcement ratio, employing smaller diameter bars with closer spacings proved to be more efficient than using larger diameter bars with greater spacings. The study also introduced two models for predicting the maximum load capacity of BFRP-reinforced concrete columns, and the proposed models showed high accuracy compared to existing models in the literature.

近年来,研究人员一直在探索使用玻璃纤维增强聚合物(GFRP)钢筋来替代混凝土柱中的钢筋。ACI 440.11-22 已为 GFRP 钢筋制定了设计准则。然而,由于实验数据有限,目前还没有针对混凝土柱中玄武岩纤维增强聚合物(BFRP)钢筋的具体规范。本研究探讨了在混凝土柱中使用 BFRP 钢筋和拉杆作为钢筋的替代品。研究介绍了在同心荷载下对 11 根支柱进行测试的结果。测试变量包括纵向 BFRP 配筋率、BFRP 拉杆间距、BFRP 拉杆直径和配筋类型。实验结果表明,使用 BFRP 和钢筋加固的混凝土柱性能相似。纵向 BFRP 钢筋对极限承载能力的贡献率为 6.4% 至 17.2%。据观察,减少拉杆间距可略微提高承载能力。此外,在使用相同体积配筋率的情况下,使用直径较小、间距较近的钢筋比使用直径较大、间距较大的钢筋更有效。研究还引入了两个模型来预测 BFRP 加固混凝土柱的最大承载能力,与文献中的现有模型相比,所提出的模型显示出较高的准确性。
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引用次数: 0
The Behavior of Low-Yield Point Corrugated Steel Plate Shear Walls in Strengthening RC Frames 低屈服点波纹钢板剪力墙在加固钢筋混凝土框架中的行为
IF 1.7 4区 工程技术 Q3 ENGINEERING, CIVIL Pub Date : 2024-07-08 DOI: 10.1007/s40996-024-01537-z
Ningning Feng, Changsheng Wu

Two types of corrugated steel plate shear walls, namely low-yield point (LYP) and convention, are investigated in terms of strengthening reinforced concrete (RC) frames. Within LYP corrugated steel plate shear walls, two layouts are considered: half and full plate. A total of 24 models are considered to assess their performance in the aspect of ultimate strength, stiffness, and mechanical analysis. The objective of this research is to compare and analyze the effectiveness of LYP corrugated steel plate shear walls in enhancing the seismic resistance of RC frames. Based on force analysis and finite element modelling, the equivalent support model is proposed to verify the validity of the models. The deviation was between 1.76 and 14.27%. The findings reveal that LYP corrugated steel plate shear walls demonstrate comparable bearing capacity to conventional methods, with the added advantage of improved ductility. The maximum top displacement increases by 35% and 68% in the case of half and full plate. Although there is minimal variation (9.86%) in stiffness, these characteristics collectively contribute to enhanced seismic resistance and overall performance of the reinforced concrete frames.

本文从加固钢筋混凝土(RC)框架的角度研究了两种波形钢板剪力墙,即低屈服点(LYP)和常规剪力墙。在 LYP 波形钢板剪力墙中,考虑了两种布局:半板和全板。共考虑了 24 个模型,以评估它们在极限强度、刚度和力学分析方面的性能。本研究的目的是比较和分析 LYP 波纹钢板剪力墙在增强 RC 框架抗震性方面的有效性。在受力分析和有限元建模的基础上,提出了等效支撑模型来验证模型的有效性。结果表明,LYP 钢板剪力墙的抗震性能与钢筋混凝土框架的抗震性能之间存在一定的偏差,偏差在 1.76% 到 14.27% 之间。研究结果表明,LYP 波纹钢板剪力墙的承载能力与传统方法相当,而且还具有延展性更好的优点。半板和全板的最大顶部位移分别增加了 35% 和 68%。虽然刚度变化极小(9.86%),但这些特点共同增强了钢筋混凝土框架的抗震性和整体性能。
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引用次数: 0
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Iranian Journal of Science and Technology, Transactions of Civil Engineering
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