Structures最新文献_第8页

Selected closed-form algebraic solutions for linear stress and buckling analyses of elastic shear-flexible axisymmetric cylindrical shells 弹性-剪切-柔性轴对称圆柱壳线性应力和屈曲分析的封闭代数解

IF 3.9 2区工程技术

Structures Pub Date : 2025-05-22 DOI: 10.1016/j.istruc.2025.109146

Achilleas Filippidis, Adam J. Sadowski

{"title":"Selected closed-form algebraic solutions for linear stress and buckling analyses of elastic shear-flexible axisymmetric cylindrical shells","authors":"Achilleas Filippidis, Adam J. Sadowski","doi":"10.1016/j.istruc.2025.109146","DOIUrl":"10.1016/j.istruc.2025.109146","url":null,"abstract":"<div><div>This paper presents a systematic analytical treatment of finite transverse shear strains in cylindrical shells using first-order shear deformation theory (FSDT), applied as an extension to classical thin shell elastic bending theory. The theory is illustrated on linear stress and, in particular, linear bifurcation buckling analyses of two fundamental reference load cases (axisymmetric cylinders under uniform meridional compression and uniform external pressure), with the stability analysis including non-shallow terms in addition to the transverse shear strains. Excellent agreement with FE solutions is demonstrated in a series of examples, with thick shell results characterised by increased flexibility compared against classical thin shell theories while also tending to the latter in the appropriate limit. The closed-form algebraic results presented in this paper will be particularly useful for developers of buckling design formulae, such as those which figure in the capacity curve framework of EN 1993-1-6 (2025), who currently resort to ad-hoc empirical modifications to classical ‘thin’ shell reference results to account for finite thickness effects even in shells of low relative slenderness which buckle with significant plastification. Detailed Excel and Python implementations are provided via GitHub.</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"78 ","pages":"Article 109146"},"PeriodicalIF":3.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Deformation analysis of high-speed railway CFG pile composite subgrade during shield tunnel underpassing 高速铁路CFG桩复合路基盾构隧道下穿变形分析

IF 3.9 2区工程技术

Structures Pub Date : 2025-05-21 DOI: 10.1016/j.istruc.2025.109193

Erdong Guo , Haoran Hu , Jinxing Lai , Wenhao Zhang , Siyue He , Guanhua Cui , Ke Wang , Lixin Wang

{"title":"Deformation analysis of high-speed railway CFG pile composite subgrade during shield tunnel underpassing","authors":"Erdong Guo , Haoran Hu , Jinxing Lai , Wenhao Zhang , Siyue He , Guanhua Cui , Ke Wang , Lixin Wang","doi":"10.1016/j.istruc.2025.109193","DOIUrl":"10.1016/j.istruc.2025.109193","url":null,"abstract":"<div><div>With the rapid development of China's high-speed railway and subway systems, numerous interconnected projects have emerged. Engineers have widely adopted CFG pile composite foundations to reinforce weak high-speed railway subgrades, yet theoretical research on their behavior during tunnel underpassing remains limited. Focusing on a shield tunnel project underpass high-speed railway (Xulan High-Speed Rail in Xi'an Metro), this study investigated the subgrade deformation failure mechanism during tunneling through multi-scale methods such as theoretical analysis, model tests, and numerical simulations. Results indicate that ground loss rate and the distance between pile bases and the tunnel most significantly affect subgrade deformation. At ground loss rates of 0.5 %, 1.0 %, and 1.5 %, the maximum subgrade settlements were 3.2 mm, 6.4 mm, and 9.6 mm, respectively. Finally, control criteria for subgrade deformation zoning based on settlement U were established: strong influence zone (U ≥ 8 mm), weak influence zone (4 ≤ U < 8 mm), and non-affected zone (U < 4 mm).</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"78 ","pages":"Article 109193"},"PeriodicalIF":3.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effect of utilizing simple mechanical truss joints on the performance of hybrid truss-concrete beams subjected to bending 采用简单机械桁架节点对桁架-混凝土混合梁受弯性能的影响

IF 3.9 2区工程技术

Structures Pub Date : 2025-05-21 DOI: 10.1016/j.istruc.2025.109224

Ahmed Yaseen Al-Tuhami , Ahmed Ghallab , Al-Tuhami Abuzeid Al-Tuhami

{"title":"Effect of utilizing simple mechanical truss joints on the performance of hybrid truss-concrete beams subjected to bending","authors":"Ahmed Yaseen Al-Tuhami , Ahmed Ghallab , Al-Tuhami Abuzeid Al-Tuhami","doi":"10.1016/j.istruc.2025.109224","DOIUrl":"10.1016/j.istruc.2025.109224","url":null,"abstract":"<div><div>Changing the shape of concrete beam reinforcement to traditional hybrid rebar trussed skeletons enhances the structural integrity of concrete beams. However, eccentricities occur within the system joints due to misalignment between the diagonal axes and the top and bottom chord axes, causing complex stresses and potential buckling. Problems with cold bending and welding of the diagonals may also result in fractures in the bending zone at the upper chord joints and at the welding points in the lower chord joints. To address these challenges, this study introduces two new truss systems with simplified mechanical joints. Eight large-scale specimens were fabricated and tested in bending under four-point loads. Two of these specimens were regular hybrid trusses with welded joints: one was tested in phase I, without concrete, and the other was tested in phase II as a composite beam. The remaining six specimens were fabricated to test the hybrid truss systems with two innovative mechanical joints. Two specimens were tested in phase I and four in phase II. Factors such as beam depth, span-to-depth ratio, and the laminar truss angles in the lateral direction were studied and compared with the traditional system with welding joints. Results show that replacing welded joints with mechanical joints enhanced the beam system performance in both stages I and II in terms of load capacities, distributed stresses more evenly, and reduced the likelihood of joint failure and premature collapse in Phase I. In addition, the implementation of the proposed mechanical joints led to an increase in the maximum load-to-yield load ratio by as much as 14 %. This enables more energy to be absorbed before failure and acts as a visible warning sign before total collapse occurs, which is an essential aspect in phase I.</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"78 ","pages":"Article 109224"},"PeriodicalIF":3.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 and empirical study of in-plane seismic performance of unreinforced masonry walls with large and multiple openings 大开口、多开口无配筋砌体墙体面内抗震性能试验与实证研究

IF 3.9 2区工程技术

Structures Pub Date : 2025-05-21 DOI: 10.1016/j.istruc.2025.109190

Muhammad Salman , Muhammad Javed , Mohammad Asif Jan , Muhammad Adeel Arshad , Sajjad Hussain , Zahid ur Rehman

{"title":"Experimental and empirical study of in-plane seismic performance of unreinforced masonry walls with large and multiple openings","authors":"Muhammad Salman , Muhammad Javed , Mohammad Asif Jan , Muhammad Adeel Arshad , Sajjad Hussain , Zahid ur Rehman","doi":"10.1016/j.istruc.2025.109190","DOIUrl":"10.1016/j.istruc.2025.109190","url":null,"abstract":"<div><div>Modern unreinforced masonry constructions with large and multiple openings are particularly vulnerable to earthquake-induced damage due to their poor seismic performance. This study investigates the in-plane seismic behavior of large-scale unreinforced masonry wall specimens constructed with fired clay bricks, representing two typical configurations: one with a single large opening and another with two identical openings. The specimens were subjected to vertical stress equivalent to two-story masonry buildings and cycles of lateral in-plane displacements till the verge of collapse. The findings of this research study revealed significant cracking in the exterior spandrel joints of both specimens, leading to its early instability and loss of structural integrity due to out-of-plane movement, rather than any in-plane failure mechanisms developing within the piers. The specimen with multiple openings exhibited lower lateral strength, reduced energy dissipation, and greater deformation capacity compared to the single-opening specimen, primarily due tothe pronounced flexural response of individual piers. Lateral strength and drift capacities at various performance levels were also estimated using ASCE and Eurocode. These codes accurately predicted lateral strength, while overestimating the ultimate drifts and performance levels due to differences in failure mechanisms and boundary conditions introduced by the spandrels. Furthermore, an empirical relation was proposed based on incorporating the effect of these factors along with the aspect ratio of the piers and axial compression ratio, to effectively estimate the displacement capacity of piers in actual masonry walls or buildings. The proposed relation demonstrated a stronger correlation with experimental results compared to estimation from ASCE and Eurocode.</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"78 ","pages":"Article 109190"},"PeriodicalIF":3.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Modern techniques for designing high-strength circular concrete-filled tube columns: Knowledge-guided data approach 设计高强度圆形钢管混凝土柱的现代技术：知识导向的数据方法

IF 3.9 2区工程技术

Structures Pub Date : 2025-05-20 DOI: 10.1016/j.istruc.2025.109220

Abdullah Alghossoon , Duaa Omoush , Amit Varma

{"title":"Modern techniques for designing high-strength circular concrete-filled tube columns: Knowledge-guided data approach","authors":"Abdullah Alghossoon , Duaa Omoush , Amit Varma","doi":"10.1016/j.istruc.2025.109220","DOIUrl":"10.1016/j.istruc.2025.109220","url":null,"abstract":"<div><div>The recent updates in the AISC Specification for high-strength composite columns apply exclusively to rectangular shapes. This research is a response to the increasing demand to include high-strength circular concrete-filled tube (HS-CCFT) members in design considerations, defined as concrete compressive strength exceeding 70 MPa and steel yield strength exceeding 517 MPa. The paper introduces a unique methodology that combines 320 experimental test results with knowledge-guided advanced data-driven models, namely Gene Expression Programming (GEP) and Artificial Neural Networks (ANN), to develop simplified, partially mechanical-based design equations. The proposed equations include material modulus ratios alongside the traditional confinement factors, providing more reliable estimates of concrete confinement. The analysis also indicates that the limiting slenderness ratio for local buckling in HS-CCFTs is higher than in conventional CCFTs, extending up to <em>D/t</em> = 220. The proposed plastic stress distribution method, which accounts for steel local buckling and concrete confinement, eliminates the need for section classification, thus simplifying the design process while improving prediction accuracy. The statistical metrics CoV of 0.1, mean of 1.05, and R² of 0.99 demonstrate the exceptional reliability of the developed equations, presenting a strong case for inclusion in future design codes and offering practical tools for engineers to optimize structural design and safety.</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"78 ","pages":"Article 109220"},"PeriodicalIF":3.9,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Local compressive length of post-tensioning concrete wall 后张混凝土墙体局部抗压长度

IF 3.9 2区工程技术

Structures Pub Date : 2025-05-20 DOI: 10.1016/j.istruc.2025.109231

Jingxin Wang, Qi Yang, Yiqiu Lu

{"title":"Local compressive length of post-tensioning concrete wall","authors":"Jingxin Wang, Qi Yang, Yiqiu Lu","doi":"10.1016/j.istruc.2025.109231","DOIUrl":"10.1016/j.istruc.2025.109231","url":null,"abstract":"<div><div>Post-tensioning (PT) concrete wall system is one of the well-developed seismic resilient structures due to its low damage, repairability and small residual deformation. Local compressive length defined as the length where concrete compressive strain concentrate is critical to estimate the strain and design the confining stirrups at the wall toe, yet the strain distribution and its localized height haven’t been studied theoretically and systematically. A 2D finite element model implemented in VecTor2 was first developed for PT wall analysis to study its local compressive mechanism at the wall toe. The model was verified by comparison of global and local responses with previous experimental results. Parametric study was conducted to investigate the most critical factors influencing the local compressive length of PT walls. Results show that the compressive length is significantly correlated with axial load ratio and shear span ratio. A new formula considering these influencing factors was proposed and compared with the previous empirical formulas. Results show that previous empirical formulas overpredict the local compressive length and underestimate the corresponding compressive strain, while the proposed formula can accurately estimate both local compressive length and strains. The wall designed with the proposed formula performed significantly better than walls with previous formulas. Design recommendations are provided regarding the calculation methods for critical strain at the wall toe and the height for confinement stirrups. The research output compensates for the lack of theory about local compressive mechanisms of PT walls and provides theoretical support for confinement design.</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"78 ","pages":"Article 109231"},"PeriodicalIF":3.9,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Research on concrete diagonal crack depth detection using the tracer electromagnetic method 示踪电磁法探测混凝土斜裂缝深度的研究

IF 3.9 2区工程技术

Structures Pub Date : 2025-05-20 DOI: 10.1016/j.istruc.2025.109187

Yulei Wang , Jiahui Liang , Lei Tang

{"title":"Research on concrete diagonal crack depth detection using the tracer electromagnetic method","authors":"Yulei Wang , Jiahui Liang , Lei Tang","doi":"10.1016/j.istruc.2025.109187","DOIUrl":"10.1016/j.istruc.2025.109187","url":null,"abstract":"<div><div>Crack propagation can lead to fracture of concrete structures, and the crucial depth data is not visible and is difficult to measure effectively. The traditional concrete crack depth detection method is mainly aimed at vertical cracks, and there are challenges include inadequate accuracy, low efficiency, and insufficient detection depth. And there is almost no research on the depth detection of diagonal cracks. To address this issue, this paper introduces the tracer electromagnetic method, a novel approach to measure the depth of concrete diagonal cracks by combining the indicator with ground penetrating radar. The indicator is used in this method to reach the bottom of the crack, and its position is monitored through electromagnetic wave reflections, enabling an intuitive display of the crack depth. In this paper, the detection principle of this new method is described in detail, and the concrete standard diagonal crack specimens with different inclination angles are made. Based on the developed indicator, the experimental study on the detection of diagonal crack depth is carried out. The crack depth is remeasured by the most conventional ultrasonic method, and the detection effects of the two detection techniques are compared comprehensively. Numerical examples are used to analyze the factors that influence the accuracy of the tracer electromagnetic method in measuring the depth of diagonal cracks. The results demonstrate that, compared to the ultrasonic method, the tracer electromagnetic method significantly enhances the accuracy of diagonal crack depth detection and can also identify the expansion direction of the crack within the structure. Moreover, the indicator placed on the lower side wall of the diagonal crack reduces the radar signal reflection at the crack’s bottom. In the actual detection, the structural boundary and the radar detection distance will lead to different detection results in different detection directions.</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"78 ","pages":"Article 109187"},"PeriodicalIF":3.9,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Full-scale experimental and numerical investigation on performance enhancement of slab bridge based on arched corrugated steel exoskeleton 拱形波纹钢外骨骼增强板桥性能的全尺寸试验与数值研究

IF 3.9 2区工程技术

Structures Pub Date : 2025-05-20 DOI: 10.1016/j.istruc.2025.109207

Xiaoming Wang , Yu Chen , Liang Liu , Jianling Zhao , Qian Wu , Chenjing Sun , Hongjie Qiu

{"title":"Full-scale experimental and numerical investigation on performance enhancement of slab bridge based on arched corrugated steel exoskeleton","authors":"Xiaoming Wang , Yu Chen , Liang Liu , Jianling Zhao , Qian Wu , Chenjing Sun , Hongjie Qiu","doi":"10.1016/j.istruc.2025.109207","DOIUrl":"10.1016/j.istruc.2025.109207","url":null,"abstract":"<div><div>As a widely used structure for small-span bridges, concrete slab bridges face an increasingly prominent risk of deterioration and even collapse due to heavy vehicle load and environmental corrosion, posing a serious threat to bridge safety. To address these challenges and meet growing transportation demands without disrupting traffic, an innovative active reinforcement method for small-span slab bridges based on Arch Corrugated Steel Exoskeleton (ACSE) is proposed in this paper. The proposed reinforcement approach enhances the load-bearing capacity by applying precompression to ACSE, allowing it to actively share both the dead and live load of the slab bridge. The reinforcement procedure and connections of ACSE to slab bridges are carefully designed. To evaluate the performance of this method, three full-scale experiments were conducted on 5-meter-span slabs. The results show that the ACSE method increases the flexural ultimate bearing capacity of the slab by 22.78 % and shares up to 60.00 % of the slab’s self-weight. Additionally, a numerical model for ACSE reinforcement is validated using experimental data and utilized to explore the feasibility of different ACS-slab connections as well as different arched corrugated steel (ACS) corrugations. Further parameter analysis reveals that the bearing capacity of the test slabs increases when the thickness and corrugation of the ACS increase. The dead load sharing effect of the ACSE is not significantly influenced by the connection type but is heavily affected by the applied precompression and the stiffness of the ACS. Moreover, the live load sharing effect becomes more pronounced with larger ACS plate thicknesses and cross-sectional sizes.</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"78 ","pages":"Article 109207"},"PeriodicalIF":3.9,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Fire behavior of H-shaped steel reinforced reactive powder concrete columns h型钢增强活性粉末混凝土柱的防火性能

IF 3.9 2区工程技术

Structures Pub Date : 2025-05-20 DOI: 10.1016/j.istruc.2025.109204

Yuzhuo Wang , Yihui Wang , Xianwei Gong , Jie Xu , Liwei Guo , Changlin Wang

{"title":"Fire behavior of H-shaped steel reinforced reactive powder concrete columns","authors":"Yuzhuo Wang , Yihui Wang , Xianwei Gong , Jie Xu , Liwei Guo , Changlin Wang","doi":"10.1016/j.istruc.2025.109204","DOIUrl":"10.1016/j.istruc.2025.109204","url":null,"abstract":"<div><div>This paper presents the fire resistance behavior of steel reinforced reactive powder concrete (SRRPC) columns. The main factors of section size, axial load ratios, reinforcement ratios, and heating-surface number on the fire resistance of SRRPC column were considered. The findings showed that surface color of the columns changed from gray to gray white after fire. Vertical and horizontal cracks were found on the surface of the specimens. The quantity of small cracks is greater than that of large cracks, and concrete cracking phenomenon was found in some specimens. The failure time increased by 44.24 % as the section size increased from 180 × 180 mm to 260 × 260 mm. The failure time decreased by 105.12 % as the axial load ratios increased from 0.2 to 0.6. The failure time improved by 8.82 % as the reinforcement ratios increased from 0.479 % to 1.55 %. The failure time decreased by 27.25 % when the heating-surface number increased from 1 to 4. With the increase of axial load ratios, heating-surface number and the decrease of section size, reinforcement ratios, the fire resistance was reduced. The influence degree of each parameter on the fire resistance in descending order are axial load ratios, section size, heating-surface number and reinforcement ratios. Finally, a simplified calculation method of the fire resistance was proposed, which offers a reference for evaluating the fire resistance of SRRPC constructions in fire.</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"78 ","pages":"Article 109204"},"PeriodicalIF":3.9,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Enhanced seismic resilience of MSCSS using a novel hybrid VD-TFPB control system with consideration of soil-structure interaction 考虑土-结构相互作用的新型VD-TFPB混合控制系统增强MSCSS的抗震能力

IF 3.9 2区工程技术

Structures Pub Date : 2025-05-20 DOI: 10.1016/j.istruc.2025.109094

Mustapha Abdulhadi , Xun’an Zhang , Elena Atroshchenko , Jaroon Rungamornrat

{"title":"Enhanced seismic resilience of MSCSS using a novel hybrid VD-TFPB control system with consideration of soil-structure interaction","authors":"Mustapha Abdulhadi , Xun’an Zhang , Elena Atroshchenko , Jaroon Rungamornrat","doi":"10.1016/j.istruc.2025.109094","DOIUrl":"10.1016/j.istruc.2025.109094","url":null,"abstract":"<div><div>This study presents a novel seismic control system, the Mega-Sub Controlled Structure System (MSCSS), to address vibration control challenges in tall and super-tall buildings under intense seismic excitations. The proposed hybrid VD-TFPB-controlled MSCSS integrates Triple Friction Pendulum Bearings (TFPBs) as base isolators with Viscous Dampers (VDs) between the mega frame and the vibration control substructure, enhancing damping and seismic performance. MSCSS without VD and MSCSS with VD models are established and verified using an existing benchmark. The hybrid VD-TFPB-controlled MSCSS is then developed to evaluate its vibration control response while considering soil-structure interaction (SSI). Numerical analyses with earthquake records demonstrate its superior performance compared to MSCSS without and with VD systems. Nonlinear dynamic analyses reveal that the hybrid system significantly improves vibration control. However, under SSI, increased structural flexibility leads to higher frame stress and more plastic hinges, particularly on soft soil, which amplifies vibrations. Despite these challenges, the hybrid VD-TFPB-controlled MSCSS effectively enhances seismic resilience, offering a robust solution for tall buildings.</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"78 ","pages":"Article 109094"},"PeriodicalIF":3.9,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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