Procedia Structural Integrity最新文献_第8页

Seismic Performance of Step-back and Set-back Building resting on Hill-Slope 坡地退后退后建筑抗震性能研究

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.033

Pradhumn Agrawal , Goutam Ghosh

{"title":"Seismic Performance of Step-back and Set-back Building resting on Hill-Slope","authors":"Pradhumn Agrawal , Goutam Ghosh","doi":"10.1016/j.prostr.2025.07.033","DOIUrl":"10.1016/j.prostr.2025.07.033","url":null,"abstract":"<div><div>The seismic behavior of SBS buildings resting on hill slopes is a crucial aspect of earthquake- resistant design due to complex interplay between structural configuration, topography and soil characteristics. Those buildings adapted to uneven terrain, often face significance challenges arising from irregular mass and stiffness distribution, increasing their susceptibility to seismic forces. This study investigates the dynamic behavior and structural response of such buildings under seismic loads, considering step-back configuration having slope angles of 15°, 30° and 45° respectively. This analysis insight SSI effects to capture the soil inflexibility on structural performance. This analysis is done in ESFM using ETABS V22 to evaluate key parameters such as base shear, time period and inter-stories drift. Results indicate that SSI significantly alters the structural response of building on slope as compared to fixed base assumption. In general, buildings on soft soil exhibit increased lateral displacement and reduced fundamental frequency, making them more susceptible to seismic design. SB buildings, characterized by an unsymmetrical mass and stiffness distribution, experience higher torsional effects and stress concentrations, particularly at the base of taller columns. This increases the risk of structural failure under strong ground motions. On the other hand, set back buildings, with their relatively balanced mass and stiffness distribution, exhibit lower displacement and base shear values. However, when SSI is included in the analysis, even setback buildings show increased flexibility and longer vibration periods, emphasizing the need for proper foundation design and soil improvement techniques. Overall, this research provides valuable insights into the seismic behavior of such buildings resting on hilly slope and highlights the critical role of SSI in influencing their dynamic response.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"70 ","pages":"Pages 113-120"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seismic Fragility Assessment of a Simply Supported RC Bridge 简支型钢筋混凝土桥梁地震易损性评价

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.040

Surabhi Saxena , Goutam Ghosh

{"title":"Seismic Fragility Assessment of a Simply Supported RC Bridge","authors":"Surabhi Saxena , Goutam Ghosh","doi":"10.1016/j.prostr.2025.07.040","DOIUrl":"10.1016/j.prostr.2025.07.040","url":null,"abstract":"<div><div>Bridges play a prominent role in transportation, and their safety and serviceability are also a major concern for engineers with respect to life and economic stability. Majority of bridges in the world were not designed according to seismic design criterion and experienced the failure due to inadequate detailing and improper design. In the present paper, the fragility analysis of a two-span RC bridge is done as per Hazus manual. Fragility curves describe conditional probability, i.e. the risk of a structure being damaged beyond a specific damage level for a given seismic intensity or ground motion. The probability of the damage of the bridge at various damage states has been determined under DBE (Design basis earthquake) and MCE (Maximum considered earthquake) loading conditions as per IS codal provisions. The responses of the bridge namely, maximum displacement, drift and ductility demand have been determined using pushover analysis method. Pushover analysis is a prerequisite study for the seismic fragility assessment. In the pushover analysis, capacity spectrum method has been considered to determine the performance point for different loadings. The nonlinearity has been considered by assigning plastic hinges in the bridge piers while the deck has been kept as elastic. Uniform loading pattern has been considered in the pushover analysis. It is necessary to assess the performance of the bridges in future earthquakes, so that adequate safety measures can be considered. The results of the present study will be beneficial for engineers for assessment of the damage of the bridge in case of post-earthquake scenario so that adequate safety measures can be ensured to improve the seismic resilience of the bridge.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"70 ","pages":"Pages 169-174"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Stress Intensity Factors in Semi-Elliptical and Semi-Circular Surface Cracked Plates 半椭圆形和半圆形表面裂纹板的应力强度因子分析

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.025

Varsha S , Kothapalli Lalitha Vishnu Kamesh , Piyush Pratap Singh

{"title":"Analysis of Stress Intensity Factors in Semi-Elliptical and Semi-Circular Surface Cracked Plates","authors":"Varsha S , Kothapalli Lalitha Vishnu Kamesh , Piyush Pratap Singh","doi":"10.1016/j.prostr.2025.07.025","DOIUrl":"10.1016/j.prostr.2025.07.025","url":null,"abstract":"<div><div>The present work proposes an open-form solution to calculate stress intensity factors (SIFs) from out-of-plane fracture modes (Mode I, II, and III) in structural steel rectangular plates containing surface cracks. These analytical methods are valuable for assessing structural integrity in components such as pressure vessels, bridges, and aircraft fuselages under complex loading. High-order meshing techniques within ANSYS enabled finite element method (FEM) simulations that validated the theoretical model. The study analyzes semi-elliptical and semi-circular surface cracks with depth-to-length ratios ≤ 0.5 under arbitrary 2D stress distributions. The employed weight function method evaluates SIFs under non-uniform loading with high predictive accuracy. The plate is assumed to be fully clamped along all edges. Results indicate that SIFs at the center of semi-elliptical cracks are approximately 25% higher than in semi-circular ones, with the opposite trend near the surface. An increase in the a/d ratio leads to higher SIFs, providing important input for damage-tolerant design. The derived expressions offer an efficient alternative to full-field FEM simulations in early-stage safety evaluations.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"70 ","pages":"Pages 51-58"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of Artificial Intelligence (AI) Techniques for Estimating the Property of Strength of Geopolymers Concrete 人工智能（AI）技术在地聚合物混凝土强度性能评估中的应用

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.067

Indu Sharma , Ritesh Kumar Roushan , Nitin Dahiya

{"title":"Assessment of Artificial Intelligence (AI) Techniques for Estimating the Property of Strength of Geopolymers Concrete","authors":"Indu Sharma , Ritesh Kumar Roushan , Nitin Dahiya","doi":"10.1016/j.prostr.2025.07.067","DOIUrl":"10.1016/j.prostr.2025.07.067","url":null,"abstract":"<div><div>Geographic polymer composites (GPCs) are widely studied and favoured. This process involves significant costs and require considerable time investment. Successful research demands innovative methods. This study utilized SVM to predict the compressive strength of GPC, R2, statistics, and k-fold analysis assessed the comparability of all models. Shapley Additive explanations (SHAP) is a model-independent post hoc method that investigates the impact of input factors on GPC CS. Individual ML methods demonstrated lower accuracy in predicting GPC CS compared to ensemble ML approaches. The R2 values for the model and SVM were 0.98 and decreased with the application of ensemble machine learning methods, validating their precision. SHAP identified a more robust positive correlation between GGBS and the compressive strength of GPC. Furthermore, the molarity of NaOH yielded advantageous effects. Both fly ash and 10/20 mm gravel influence the compressive strength of GPC in both positive and negative ways. These components increase CS, while GPC decreases it. Machine learning will assist builders in assessing materials swiftly and cost-effectively.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"70 ","pages":"Pages 380-385"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interpretable Ensemble Machine Learning Models for Prediction of Shear Strength of Concrete Beams Reinforced with FRP Rebar 预测FRP筋混凝土梁抗剪强度的可解释集成机器学习模型

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.07.068

Rachit Sharma , Arghadeep Laskar

{"title":"Interpretable Ensemble Machine Learning Models for Prediction of Shear Strength of Concrete Beams Reinforced with FRP Rebar","authors":"Rachit Sharma , Arghadeep Laskar","doi":"10.1016/j.prostr.2025.07.068","DOIUrl":"10.1016/j.prostr.2025.07.068","url":null,"abstract":"<div><div>A lack of design guidelines in Indian Standard code for fiber reinforced polymer (FRP) bars could result in over-reinforcement, driving up construction costs. The current design guidelines for shear strength vary based on several parameters and often provide conservative results. To address this issue, a machine learning (ML) framework based on ensembled models has been developed to estimate the shear capacity of FRP reinforced concrete (FRP-RC) beams. A well-curated dataset consisting of RC beams with FRP rebars without stirrups has been utilized for this purpose. An ensemble algorithm, XGBoost, and a traditional algorithm, Support Vector Regressor (SVR), have been compared for evaluating the shear capacity. The algorithms’ hyperparameters were optimized using GridSearch on the training set, combined with a ten-fold cross-validation optimization method. The models’ performance has been assessed using four metrics: R² score, RMSE, MAE, and MAPE. The best performing XGBoost model has achieved performance metrics of 0.94, 34.39 kN, 14.68 kN and 15.80% on testing dataset for R<sup>2</sup>, RMSE, MAE and MAPE respectively. The model’s reliability has been further confirmed by comparing it with the current design codes ACI 440-1.R15 and GB50608-2020. Since ML-based models function as black boxes, a unified SHapley Additive exPlanations (SHAP) approach has been applied to interpret the outcome of XGBoost model. The beam width (<em>b</em>), span-to-depth (<em>a/d</em>) and effective depth (<em>h</em>) have been identified as the most significant input features which can improve the shear strength predictability for FRP-RC beams.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"70 ","pages":"Pages 386-393"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Single-leg bending (SLB) analysis of a structural adhesive as a function of the adhesive thickness 一种结构胶粘剂的单腿弯曲（SLB）随胶粘剂厚度的函数分析

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.08.074

A.F.L. Macedo , R.D.S.G. Campilho , A.L. Faria , M. Belhouari , K. Madani

{"title":"Single-leg bending (SLB) analysis of a structural adhesive as a function of the adhesive thickness","authors":"A.F.L. Macedo , R.D.S.G. Campilho , A.L. Faria , M. Belhouari , K. Madani","doi":"10.1016/j.prostr.2025.08.074","DOIUrl":"10.1016/j.prostr.2025.08.074","url":null,"abstract":"<div><div>The mixed-mode static fracture analysis of bonded joints using cohesive zone models (CZM) requires accurate predictions of adhesive strength and fracture toughness. Tensile and shear fracture toughness (<em>G</em><sub>IC</sub> and <em>G</em><sub>IIC</sub>), along with their mixed-mode behaviors, significantly vary with the adhesive thickness (<em>t</em><sub>A</sub>). This work focuses on the numerical analysis of how <em>t</em><sub>A</sub> influences the mixed-mode fracture process in adhesive joints. Experimental data from single-leg bending (SLB) tests is used, involving composite adherends and a ductile adhesive, with <em>t</em><sub>A</sub> ranging from 0.1 to 2.0 mm. The study includes a comparison between experimental and numerical load-displacement (<em>P</em>-<em>δ</em>) curves for validation purposes, followed by the estimation of CZM laws and validation of the fracture envelope across all <em>t</em><sub>A</sub>. The findings enabled a comprehensive numerical evaluation of the <em>t</em><sub>A</sub> effect on fracture behavior in adhesive joints, leading to the proposal of a numerical methodology to analyze mixed-mode bonded joints.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"72 ","pages":"Pages 61-68"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144933815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Innovative Wood-Based Solutions to Mitigate Material Failures in Traditional Wooden Fishing Boats: A Review 减少传统木制渔船材料失效的创新木材解决方案：综述

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.08.122

Muh. Linggar Adi Wardhana , Aprianur Fajri , Aditya Rio Prabowo , Seung Jun Baek , Martin Jurkovič

{"title":"Innovative Wood-Based Solutions to Mitigate Material Failures in Traditional Wooden Fishing Boats: A Review","authors":"Muh. Linggar Adi Wardhana , Aprianur Fajri , Aditya Rio Prabowo , Seung Jun Baek , Martin Jurkovič","doi":"10.1016/j.prostr.2025.08.122","DOIUrl":"10.1016/j.prostr.2025.08.122","url":null,"abstract":"<div><div>The construction, design, and technology of traditional fishing boats are integral to Indonesia’s cultural heritage. Despite advancements in materials and methods, wood remains the primary material for boat construction due to its availability, cost-effectiveness, and ease of repair. This review examines innovative wood-based composite technologies aimed at addressing material failure issues in wooden ship structures. Superhydrophobic treatments utilizing methyltrimethoxysilane (MTMS) significantly enhance wood’s corrosion resistance and mechanical strength. Transparent flame-retardant coatings have effectively delayed wood charring without compromising the material’s aesthetic qualities. Densified Wood Dowels Filled with Aluminum Tubes (DWFAT) offer a viable alternative to steel dowels, providing superior performance in terms of stiffness, load-bearing capacity, and corrosion resistance. Collectively, these advancements underscore the necessity for ongoing innovation in wood material technology to mitigate material failures, enhance the durability and performance of traditional wooden ships, and ensure compliance with modern standards.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"72 ","pages":"Pages 418-426"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144933874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toward bullet’s residual velocity and plate’s stress contour under ballistic impact: An idealization of ship casualties under piracy 弹道冲击下的子弹残余速度与钢板应力轮廓：海盗攻击下舰船伤亡的理想化分析

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.08.120

Gusti Kid Faiq Syah , Aditya Rio Prabowo , Jung Min Sohn , Hermes Carvalho

引用次数: 0

Change of dynamic properties of the pile-soil system during freezing 冻结过程中桩-土系统动力特性的变化

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.08.128

G. Gusev , V. Yepin , R. Tsvetkov

引用次数: 0

Mathematical modeling of the output parameters for a loudspeaker-driven synthetic jet actuator 扬声器驱动合成射流作动器输出参数的数学建模

Procedia Structural Integrity Pub Date : 2025-01-01 DOI: 10.1016/j.prostr.2025.08.076

Emre Kara

引用次数: 0