Advances in Structural Engineering最新文献_第3页

Seismic performance of precast concrete shear walls with spiral stirrup restrained grout-anchored lapped reinforcement connection 采用螺旋箍筋约束灌浆锚固搭接钢筋连接的预制混凝土剪力墙的抗震性能

IF 2.6 4区工程技术

Advances in Structural Engineering Pub Date : 2024-08-22 DOI: 10.1177/13694332241276053

Lei Tang, Zhengxing Guo, Xulei Zang

{"title":"Seismic performance of precast concrete shear walls with spiral stirrup restrained grout-anchored lapped reinforcement connection","authors":"Lei Tang, Zhengxing Guo, Xulei Zang","doi":"10.1177/13694332241276053","DOIUrl":"https://doi.org/10.1177/13694332241276053","url":null,"abstract":"Low-cycle reversed loading tests and finite element analysis were conducted on one cast-in-place (CIP) shear wall specimen and two precast concrete (PC) shear wall specimens with different configurations of spiral stirrup. By comparing the failure modes, load-carrying capacities, hysteresis behaviours, skeleton curves, deformation capacities, stiffness degradation, plastic hinge distributions, and energy dissipation capacities of the PC specimen and the PIC specimen, the mechanical properties of the PC specimen equivalent to those of the CIP specimen were verified. Both the PC and PIC specimens exhibited bending shear failure, consistent with the ductile failure design requirements of “equivalent to cast-in-place”. The peak load capacity of the PC specimen was 3.64% higher than that of the PIC specimen, and the hysteresis curve was as full as that of the CIP specimen. The stiffness degradation performance of the PC specimen was slightly lower than that of the CIP specimen in the cracking stage, but it was comparable to that of the CIP specimen after entering the elastic-plastic stage. During the yielding stage, the maximum difference in energy dissipation performance between the CP specimen and the CIP specimen did not exceed 11.34%. Both the tests and finite element analysis confirmed the effective constraint of spiral stirrup on lap joints. Setting spiral stirrup for the vertical distribution reinforcements on the web had no significant effect on the load-carrying capacity of the PC specimen, but it slightly reduced its ductility and energy dissipation performance, by no more than 6.63%. For economic and safety considerations, it is not recommended to use spiral stirrup in this area.","PeriodicalId":50849,"journal":{"name":"Advances in Structural Engineering","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Capacity reinstatement of reinforced concrete one-way ribbed slabs with rib-cutting shear zone openings: Hybrid fiber reinforced polymer/steel technique 带切肋剪力区开口的钢筋混凝土单向肋板的承载力恢复：纤维增强聚合物/钢混合技术

IF 2.6 4区工程技术

Advances in Structural Engineering Pub Date : 2024-08-21 DOI: 10.1177/13694332241276060

Hussein Elsanadedy, Amjad Al Kallas, Husain Abbas, Tarek Almusallam, Yousef Al-Salloum

{"title":"Capacity reinstatement of reinforced concrete one-way ribbed slabs with rib-cutting shear zone openings: Hybrid fiber reinforced polymer/steel technique","authors":"Hussein Elsanadedy, Amjad Al Kallas, Husain Abbas, Tarek Almusallam, Yousef Al-Salloum","doi":"10.1177/13694332241276060","DOIUrl":"https://doi.org/10.1177/13694332241276060","url":null,"abstract":"This study examined the use of two configurations for capacity restoration of reinforced concrete (RC) one-way ribbed slabs containing openings in shear zones. Four specimens of half-scale comprised three ribs in addition to a top RC slab. The test plan included a control specimen without openings, one with two rib-cutting shear openings, one strengthened using a blend of carbon FRP (CFRP) composites and steel plates, and another retrofitted with a combination of glass FRP (GFRP) composites and steel plates. The two strengthening schemes were found successful at fully restoring the ultimate load of the specimens. The ultimate load of specimen strengthened using the hybrid CFRP/steel system exceeded the control slab without openings by 52%. However, in the other specimen where a mix of steel plates and GFRP sheets was used, the load capacity was only 5% less than the control specimen without openings. While the dissipated energy and stiffness were reinstated and improved for the hybrid CFRP/steel system, they were partially restored for the GFRP/steel system. Additionally, a prediction approach was developed to estimate the maximum load of the slabs. The developed approach considered potential shear and flexural modes of failure, providing close predictions of the ultimate load.","PeriodicalId":50849,"journal":{"name":"Advances in Structural Engineering","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modal parameter extraction from improved principal component analysis and structural state identification 从改进的主成分分析和结构状态识别中提取模态参数

IF 2.6 4区工程技术

Advances in Structural Engineering Pub Date : 2024-08-21 DOI: 10.1177/13694332241269246

Xueyan Li, E. Liu, Lixin Wang, SJ Lin, W Zhao

{"title":"Modal parameter extraction from improved principal component analysis and structural state identification","authors":"Xueyan Li, E. Liu, Lixin Wang, SJ Lin, W Zhao","doi":"10.1177/13694332241269246","DOIUrl":"https://doi.org/10.1177/13694332241269246","url":null,"abstract":"With the vigorous development of building structures and important infrastructure, structural health monitoring is necessary. Because there is no need to establish structural finite element modeling and train for various structural conditions, the data-driven and unsupervised learning method is very popular. Principal component analysis is a powerful signal analysis tool, but its lack of physical significance and the loss of sensitive information have hindered its wider application. Therefore, the improved principal component analysis based narrowband filtering is proposed to extract mode shapes and construct the structural state vectors, so that the damage index is more sensitive to damage and robust to the environmental factors. After the vibration response of the long-term monitoring is analyzed by the principal component analysis, the Gaussian mixture model clustering analysis is used to classify the structural states. Finally, the proposed method is applied to the analysis of the simulation data of ASCE Benchmark structure and the measured data of steel beams in the lab. The results show that the structural state vector is sensitive to structural damage. The clustering analysis of Gaussian mixture model can distinguish the structural states. The effectiveness of the proposed method is verified.","PeriodicalId":50849,"journal":{"name":"Advances in Structural Engineering","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Contactless recognition technology of pedestrian lateral excitation based on dual perspective of mediapipe 基于 mediapipe 双视角的行人横向激励非接触式识别技术

IF 2.6 4区工程技术

Advances in Structural Engineering Pub Date : 2024-08-19 DOI: 10.1177/13694332241276050

Buyu Jia, Yingfeng He, Yangwen Chen, Zhaozhe Chen, Xiaolin Yu

{"title":"Contactless recognition technology of pedestrian lateral excitation based on dual perspective of mediapipe","authors":"Buyu Jia, Yingfeng He, Yangwen Chen, Zhaozhe Chen, Xiaolin Yu","doi":"10.1177/13694332241276050","DOIUrl":"https://doi.org/10.1177/13694332241276050","url":null,"abstract":"The remarkable lateral oscillatory occurrences observed in renowned footbridges, such as the Solferino Bridge in France, the Millennium Bridge in the UK, and the Oda Bridge in Japan, have garnered widespread attention. The intricate nature of pedestrian-induced lateral vibrations necessitates a comprehensive investigation into their underlying mechanisms, with the crux lying in the identification of the lateral excitation model. Presently, most prevailing detection approaches predominantly rely on contact-based equipment, such as force sensors and displacement sensors. However, these approaches suffer from two main drawbacks. Firstly, contact measurement necessitate a substantial number of sensors and entail higher experimental costs. Secondly, when extending contact-based measurements to accommodate multiple individuals, complications arise, including cumbersome installation, heightened technical complexity, and escalated experimental costs. Therefore, we present a novel approach, based on visual technology, to expeditiously recognize the lateral excitation induced by pedestrians. Termed the Dual Perspective of Mediapipe (DPM), this method harnesses the power of Mediapipe, coupled with dual camera models, to precisely unravel pedestrian gait particulars and lateral forces. The efficacy of the proposed approach is validated through a comparative analysis with existing pedestrian gait data. It is noteworthy that this approach offers significant advantages: non-contact with the test pedestrians, thereby ensuring the accuracy of gait information; convenient and straightforward arrangement of measurement equipment; and low experimental costs.","PeriodicalId":50849,"journal":{"name":"Advances in Structural Engineering","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study on seismic performance of prestressed concrete solid square piles 预应力混凝土实心方桩抗震性能试验研究

IF 2.6 4区工程技术

Advances in Structural Engineering Pub Date : 2024-08-17 DOI: 10.1177/13694332241276057

Shunfeng Gong, Yueqian Zhao, Hua Fan, Shunliang Xu, Quanbiao Xu, Junwei Ren, Yong Lu

{"title":"Experimental study on seismic performance of prestressed concrete solid square piles","authors":"Shunfeng Gong, Yueqian Zhao, Hua Fan, Shunliang Xu, Quanbiao Xu, Junwei Ren, Yong Lu","doi":"10.1177/13694332241276057","DOIUrl":"https://doi.org/10.1177/13694332241276057","url":null,"abstract":"Prestressed concrete solid square (PCSS) piles exhibit superior lateral bearing capacity and durability compared to pretensioned spun concrete pipe piles, and are more suitable for pile foundation engineering in high-intensity seismic regions and corrosive environments. There is still a lack of research on the seismic performances of the pile body of PCSS piles. This paper presents an experimental study and the associated theoretical and finite element (FE) analyses on the seismic performance of PCSS piles. Three full-scale PCSS pile specimens were tested under lateral cyclic loads with various axial force ratios, and the results are analyzed. Following the tests, a theoretical calculation method is proposed for the bearing capacity of PCSS piles. A FE model for PCSS pile specimens is established and validated against the test observations. Based on this model, a parametric analysis is then conducted. The results show that the PCSS pile specimens all exhibit typical flexural failure. Under a low axial force ratio, the failure mode of PCSS pile specimen is governed by the tensile rupture of prestressing tendons. Under a high axial force ratio, the failure is influenced by the crushing of cover concrete, while the concrete in the core zone remains intact, and there is no outward buckling of prestressing tendons and no rupture of stirrups. Increasing the prestressing tendon ratio can simultaneously improve the bearing and deformation capacity under a lower axial force. Under higher axial force ratios, however, increasing the prestressing tendon ratio or concrete strength can improve the bearing capacity but lead to a decline in deformation capacity. Compared to pretensioned spun high-strength concrete (PHC) piles, PCSS piles exhibit better seismic behavior on aspects of deformation capacity and ductility.","PeriodicalId":50849,"journal":{"name":"Advances in Structural Engineering","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to evaluating shear capacity in reinforced concrete deep beams with web openings strengthened using fiber-reinforced polymer and fiber-reinforced cementitious matrix 评估使用纤维增强聚合物和纤维增强水泥基质加固的带腹板开孔钢筋混凝土深梁的抗剪承载力》勘误表

IF 2.6 4区工程技术

Advances in Structural Engineering Pub Date : 2024-08-16 DOI: 10.1177/13694332241275772

引用次数: 0

Experimental study and numerical analysis on unidirectional seismic performance of square steel tube glulam composite columns 方钢管胶合梁复合柱单向抗震性能的实验研究与数值分析

IF 2.6 4区工程技术

Advances in Structural Engineering Pub Date : 2024-08-16 DOI: 10.1177/13694332241276054

Gang Wang, Kun Zhang, Xiwang Li

引用次数: 0

Experimental and numerical investigation on the flexural behavior of a novel composite slab with a joint 带接缝的新型复合板材抗弯行为的实验和数值研究

IF 2.6 4区工程技术

Advances in Structural Engineering Pub Date : 2024-08-07 DOI: 10.1177/13694332241263869

Xiulong Chen, Bin Luo, Feng Lou, Zhong Chen

{"title":"Experimental and numerical investigation on the flexural behavior of a novel composite slab with a joint","authors":"Xiulong Chen, Bin Luo, Feng Lou, Zhong Chen","doi":"10.1177/13694332241263869","DOIUrl":"https://doi.org/10.1177/13694332241263869","url":null,"abstract":"Composite slab has extensive application in building industrialization. In this study, a novel composite slab with a joint was proposed, where the precast planks with bent-up rebar are only partially prefabricated along the thickness direction at the joint for cast-in-site pouring of concrete, and the rest is fully prefabricated in the factory. The flexural performance of the composite slab was compared with that of a traditional cast-in-site slab with the same geometric dimensions through four-point bending test. The results demonstrate that the bending performance of the composite slab, including cracking load, yield load, and ultimate load, is basically consistent with that of the cast-in-site slab, and can meet the engineering requirements. Based on experimental results, numerical research was conducted on the composite slabs. The effects of slab thickness, diameter of steel bar, concrete strength of precast plank, and slab span on the flexural behavior of composite slab were investigated. The numerical results show that the cracking load, yield load, and load corresponding to the deflection limit of the specimen increase with the increase in slab thickness and decrease with the increase in slab span. Increasing the steel bar diameter can increase the load corresponding to the deflection limit and yield load, while the effect on the cracking load is almost negligible. The concrete strength of precast plank has no significant effect on the flexural behavior of the composite slab.","PeriodicalId":50849,"journal":{"name":"Advances in Structural Engineering","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141968917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An investigation into the buckling behaviour of hybrid fibre reinforced polymer-timber thin-walled C-section columns 混合纤维增强聚合物-木材薄壁 C 截面柱的屈曲行为研究

IF 2.6 4区工程技术

Advances in Structural Engineering Pub Date : 2024-08-03 DOI: 10.1177/13694332241269249

Ye Wen, Dilum Fernando, Benoit P Gilbert, Henri Bailleres, Rongrong Hu, Luke Bisby, Dipa Roy

{"title":"An investigation into the buckling behaviour of hybrid fibre reinforced polymer-timber thin-walled C-section columns","authors":"Ye Wen, Dilum Fernando, Benoit P Gilbert, Henri Bailleres, Rongrong Hu, Luke Bisby, Dipa Roy","doi":"10.1177/13694332241269249","DOIUrl":"https://doi.org/10.1177/13694332241269249","url":null,"abstract":"Hybrid fibre reinforced polymer (FRP)-timber (HFT) thin-walled structural members are a novel technology developed recently as a sustainable alternative to thin-walled steel and aluminium structures. HFT structures are made by forming thin timber veneers and FRP laminates into efficient cross-sectional geometries. While existing studies have demonstrated the potential of HFT thin-walled members to be used as structural elements, a systematic study to investigate the behaviour of HFT thin-walled structures is yet to be carried out. This paper presents a study aimed at investigating the behaviour of HFT C-section columns under concentric axial loading. In total five HFT C-section specimens each from 700 mm to 2000 mm lengths were fabricated and tested. It was found that shorter HFT C-section columns failed due to local buckling while increase in length changed the failure mode to global buckling. Effect of GF orientation and density on load carrying capacity of the HFT C-section columns was investigated numerically. It was found that it’s necessary to provide adequate GF volume in transverse to axis direction, but further increase in GF volume in transverse direction did not significantly increase the load carrying capacity. Increase in GF density in parallel to axis direction increased the load carrying capacity.","PeriodicalId":50849,"journal":{"name":"Advances in Structural Engineering","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141968916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Risk-based asset management framework for highway retaining wall systems using wireless structural health monitoring data 使用无线结构健康监测数据的公路挡土墙系统风险资产管理框架

IF 2.6 4区工程技术

Advances in Structural Engineering Pub Date : 2024-08-02 DOI: 10.1177/13694332241269258

Kidus A Admassu, Jerome Lynch, Adda Athanasopoulos-Zekkos, Dimitrios Zekkos, Brahim Benhamida

{"title":"Risk-based asset management framework for highway retaining wall systems using wireless structural health monitoring data","authors":"Kidus A Admassu, Jerome Lynch, Adda Athanasopoulos-Zekkos, Dimitrios Zekkos, Brahim Benhamida","doi":"10.1177/13694332241269258","DOIUrl":"https://doi.org/10.1177/13694332241269258","url":null,"abstract":"Retaining walls are important structural systems used in the construction of highways. With asset management methods for retaining wall inventories lagging those developed for highway bridges, there is a need to develop risk management methods for these critical structural systems. A major challenge is the vast inventories of retaining walls that asset managers must manage and the inherent limitations of visual inspections. This study proposes an asset management framework for retaining walls based on risk assessments using structural monitoring data. First, a long-term wireless monitoring solution is proposed to measure wall tilt and strain over long periods of time. Second, an analytical framework is developed to separate wall thermal responses from lateral earth pressures responses with the latter used to extract estimated lateral earth pressure distributions. A statistical distribution of lateral earth pressures are used in a reliability assessment of the wall to provide a measure of failure probability that can be combined with failure consequences to estimate asset risk. To illustrate the proposed methodology, a reinforced concrete cantilever retaining wall panel is selected for long-term structural health monitoring. A wireless structural health monitoring system is installed to measure the tilt, strain, and temperature response of the wall continuously over 15 months. The study reveals the wall exhibits strong diurnal and seasonal variations offering insight into wall behavior under operational conditions. Hypothesized levels of corrosion in the steel reinforcement at the base of the wall are explored to estimate the wall reliability. Even under the assumption of 20% reinforcement section loss, the monitored wall was found to have a reliability index well above 3.0.","PeriodicalId":50849,"journal":{"name":"Advances in Structural Engineering","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0