Turkish Journal of Civil Engineering最新文献_第2页

Ultrasonic Characterization of Polymer Based Sille Stone Powder Composite Mortars 聚合物基硅勒石粉复合砂浆的超声波表征

Turkish Journal of Civil Engineering Pub Date : 2023-11-24 DOI: 10.18400/tjce.1297882

Ahmet Cihat Ari, Mustafa Tosun, I. Oral, Y. Eker

{"title":"Ultrasonic Characterization of Polymer Based Sille Stone Powder Composite Mortars","authors":"Ahmet Cihat Ari, Mustafa Tosun, I. Oral, Y. Eker","doi":"10.18400/tjce.1297882","DOIUrl":"https://doi.org/10.18400/tjce.1297882","url":null,"abstract":"The Sille stone mined in the Sille Region of Konya province in Türkiye, is an andesitic rock. This stone is a material used in the construction of traditional and modern buildings. The Sille stone is cut while being used in buildings. The Sille stone powder (SSP) is formed during this cutting process. The SSPs cause environmental pollution. Therefore, this study was carried out to produce durable and eco-friendly new restoration mortars from the SSP that can be used in the restoration of historical buildings. The SSP composites were prepared by contributing SSP into epoxy and polyester resins in varied ratios such as 60‒75 wt.%. The effect of resin types and SSP contribution ratios on the elastic properties of epoxy resin (ER)/SSP and polyester resin (PR)/SSP composites was investigated by the ultrasonic pulse-echo method. Additionally, the morphology of these composites was investigated by scanning electron microscopy (SEM). Experimental results figured out that both longitudinal and shear wave velocity values of the PR/SSP composites were higher than of the ER/SSP composites. Furthermore, a linear increase was observed in the elastic properties of obtained composites with the increasing amounts of SSP.","PeriodicalId":241324,"journal":{"name":"Turkish Journal of Civil Engineering","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139238600","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

Bearing Capacity Equation for Shallow Foundations on Unsaturated Soils 非饱和土浅基础承载力公式

Turkish Journal of Civil Engineering Pub Date : 2023-11-13 DOI: 10.18400/tjce.1248220

A. R. Bagherieh, Özer Çi̇ni̇ci̇oğlu

{"title":"Bearing Capacity Equation for Shallow Foundations on Unsaturated Soils","authors":"A. R. Bagherieh, Özer Çi̇ni̇ci̇oğlu","doi":"10.18400/tjce.1248220","DOIUrl":"https://doi.org/10.18400/tjce.1248220","url":null,"abstract":"For shallow foundations resting on unsaturated soils, matric suction increases effective stresses, resulting in enhanced bearing capacity. However, this boost in bearing capacity is ignored in practice for the sake of simplicity, thus compromising economy. That is why this study aims to consider the beneficial effect of unsaturated conditions on bearing capacity. This is achieved by applying limit analysis using the finite element method on unsaturated soils and investigating the problem parametrically for shallow foundations. The suction effect is taken into account in the formulation of the limit analysis based on effective stress principle. The numerical outcomes are verified by comparing them with available experimental data from the literature. The findings from the parametric study emphasize that the influence of suction on bearing capacity is determined by the friction angle. Moreover, the effects of a varying suction profile are contingent on the foundation width. Based on the results derived from the numerical analyses, a modified bearing capacity equation is introduced. This equation showcases a very good coefficient of determination, effectively encompassing the effects of the soil suction profile. Consequently, the proposed procedure can be considered as a convenient yet precise tool for estimating bearing capacity in engineering practice.","PeriodicalId":241324,"journal":{"name":"Turkish Journal of Civil Engineering","volume":"37 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139279245","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

Novel Imperfection Method for Post-Buckling Strength of C-Sectioned CFS Members c形CFS构件屈曲后强度的新缺陷法

Turkish Journal of Civil Engineering Pub Date : 2023-08-04 DOI: 10.18400/tjce.1212403

Özge Gizem Çağrıcı, Rafet Aktepe, Burcu Güldür Erkal

引用次数: 0

Hazard Curves for Reliability Assessment of Strip Footings on Spatially Varying Cohesive Soils 空间变化黏性土上条形基础可靠度评估的危险曲线

Turkish Journal of Civil Engineering Pub Date : 2023-08-04 DOI: 10.18400/tjce.1340360

A. Mert, G. Yazici, Hadi KHAN BABA ZADEH

{"title":"Hazard Curves for Reliability Assessment of Strip Footings on Spatially Varying Cohesive Soils","authors":"A. Mert, G. Yazici, Hadi KHAN BABA ZADEH","doi":"10.18400/tjce.1340360","DOIUrl":"https://doi.org/10.18400/tjce.1340360","url":null,"abstract":"The present study aimed to create a series of hazard curves against maximum total settlement and angular rotation of strip footings for probabilistic shallow foundation design on clays. Random field finite element method (RFEM) was adopted with elasto-plastic clay-like soil behavior, deformation modulus (Ed) and shear strength parameters (c and ) were employed as random field inputs. Parameters were defined and assigned to the analysis models with varying correlation lengths (h, v). Models have been iteratively solved one thousand times, and output distributions of maximum settlement and angular rotations were recorded. Probability density functions (PDF) were fitted to the outputs, and probability of failure (Pf) for footing deformation limits was subsequently estimated. Proposed hazard curves for two anisotropy and three variability categories were developed employing the estimated Pfs. The method proposed has been validated using an independent database of in-situ results, and a worked example was provided to illustrate the implementation of the process. The key contribution of the research is to form hazard curves for shallow foundations considering elasto-plastic soil behavior with the impact of all influencing parameters, respecting the limit values for foundation deformation in the design codes. The proposed technique offers a probabilistic evaluation of strip footings with spatial variation of clayey soils and a valid method for the reliability-based design of foundations in the serviceability limit state.","PeriodicalId":241324,"journal":{"name":"Turkish Journal of Civil Engineering","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130348982","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

Betonarme Perdelerin Kesme Güvenliğinin TBDY-2018’e Göre İncelenmesi

Turkish Journal of Civil Engineering Pub Date : 2023-08-04 DOI: 10.18400/tjce.1235472

Aytuğ Seçki̇n, Bilge Doran

{"title":"Betonarme Perdelerin Kesme Güvenliğinin TBDY-2018’e Göre İncelenmesi","authors":"Aytuğ Seçki̇n, Bilge Doran","doi":"10.18400/tjce.1235472","DOIUrl":"https://doi.org/10.18400/tjce.1235472","url":null,"abstract":"Bu çalışmada, betonarme perdelerin tasarım kesme kuvvetinin yeterliliği Türkiye Bina Deprem Yönetmeliği 2018 (TBDY-2018) esaslarına göre araştırılmıştır. Bu amaç doğrultusunda, taşıyıcı sistemi süneklik düzeyi yüksek betonarme çerçevelerden ve perdelerden oluşan 20 katlı bir binada doğrusal ve doğrusal olmayan analizler yürütülmüştür. Çalışma kapsamında öncelikle 20 katlı bir binanın dayanıma göre tasarımı mod birleştirme yöntemi ile gerçekleştirilmiştir. Tasarlanmış binada, yatay elastik tasarım spektrumuna göre eşleştirilmiş 11 deprem kaydı etkisi altında zaman tanım alanında doğrusal olmayan analizler yapılmıştır. Doğrusal analizlerden elde edilen tasarım kesme kuvvetleri ve doğrusal olmayan analizlerden elde edilen kesme talepleri, incelenen dikdörtgen ve L-kesitli perdelerin yükseklikleri boyunca karşılaştırılmıştır. Çalışma sonucunda, L-kesitli perdede hesaplanan tasarım kesme kuvvetinin talep değerini karşılamada yetersiz kaldığı görülmüştür. Betonarme perdelerin kesme talepleri, modifiye edilmiş modal süperpozisyon yaklaşımı (MMS) ile de hesaplanmış ve bu yaklaşımın TBDY-2018’e uygulanabilirliği incelenen perdeler üzerinde test edilmiştir.","PeriodicalId":241324,"journal":{"name":"Turkish Journal of Civil Engineering","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124000572","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

An Integration Model to Facilitate Occupational Safety Inspection through Augmented Reality and Artificial Intelligence for Working at High Locations in Buildings 基于增强现实和人工智能的建筑高空作业职业安全检查集成模型

Turkish Journal of Civil Engineering Pub Date : 2023-07-01 DOI: 10.18400/tjce.1291960

Hüseyin Eryaman, Ertan Akün

{"title":"An Integration Model to Facilitate Occupational Safety Inspection through Augmented Reality and Artificial Intelligence for Working at High Locations in Buildings","authors":"Hüseyin Eryaman, Ertan Akün","doi":"10.18400/tjce.1291960","DOIUrl":"https://doi.org/10.18400/tjce.1291960","url":null,"abstract":"İnşaat sahasında gerçekleşen kazalar özellikle yükseklikten düşmeler hem ölümcül hem de ölümcül olmayan yaralanmaların önde gelen nedenidir. İnşaat sektöründe Yapı bilgi modellemesi (YBM), Genişletilmiş Gerçeklik (GG) ve Yapay Zekâ (YZ) gibi dijital teknolojiler, yapım üretkenliğini, verimliliğini ve güvenliğini artırmak için değerli araçlar olarak tanımlanmıştır. Bu araştırmada, yapım işlerinde yüksekte çalışma iş güvenliği denetimini kolaylaştırmak için Genişletilmiş Gerçeklik ve Yapay Zekânın entegrasyonu modeli önerilmektedir. Teorik çerçeveye ilişkin olarak iş süreci modeli ve sistem uygulama model entegrasyonu gösterilmektedir. Önerilen modelin değerlendirilmesi, hipotezlerin güvenilirliğini, geçerliliğini ve katkısının test edilmesi için bir Yapısal Eşitlik Model geliştirilmiştir. Araştırma bulguları, önerilen modelde kullanılan teknolojilerin entegrasyonun iş güvenliği denetimine olan olumlu etkisini ve önemini doğrulamaktadır. Önerilen model yüksek lokasyonda çalışan ekiplerin iş güvenliği bilgilerini analitik yeteneklerle dijitalleştirir ve karar verme sürecini optimize eder.","PeriodicalId":241324,"journal":{"name":"Turkish Journal of Civil Engineering","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125691120","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 Responses of an Isolated Long-span Bridge using Frequency Domain and Time Dependent Procedures 用频域和时间相关程序分析孤立大跨度桥梁的地震反应

Turkish Journal of Civil Engineering Pub Date : 2023-07-01 DOI: 10.18400/tjce.1208867

Fevzi Sarıtaş, Z. Hasgür

{"title":"Seismic Responses of an Isolated Long-span Bridge using Frequency Domain and Time Dependent Procedures","authors":"Fevzi Sarıtaş, Z. Hasgür","doi":"10.18400/tjce.1208867","DOIUrl":"https://doi.org/10.18400/tjce.1208867","url":null,"abstract":"Seismic behavior of an isolated bridge is analyzed in the frequency domain under the effects of nonstationary ground motions. For dynamic solutions, different ground environments are considered by simulating nonstationary quakes that can be represented from bedrock to soft ground level. In the simulations, power spectral functions and filtered white noise model are adopted for spectral densities of the earthquake excitations. Various computer algorithms have been developed for earthquake simulations, establishing the bridge finite element model and stochastic solutions. Twenty simulated ground motions are used for each soil profile and the parameters of Rayleigh dispersion are estimated by evaluating the system responses for each ensemble. A number of peak response factors dependent on soil conditions are presented for seismic responses. In addition, extreme value distributions of the responses are shown with the probability of exceeding functions and tables. The responses are discussed for the specific exceedance level of probabilities used in probabilistic design process. The stochastic analyses generally yielded responses consistent with time domain solutions. Exceedance probability functions of the peak responses were obtained in a close relationship. However, the probability distributions of the responses decomposed for the soft soil case and they displayed a wider dispersion even for low exceedance levels. The peak responses are expressed with some exceedance probabilities. In the estimation of response variations, this study showed the practicality of the frequency domain method and the results revealed higher peak response factors and variances for softer soil conditions. Furthermore, this study indicated that the frequency domain procedure is an effective tool in the obtaining of nonstationary seismic responses.","PeriodicalId":241324,"journal":{"name":"Turkish Journal of Civil Engineering","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121881384","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

Investigation of Pounding between Two Adjacent Building Models with Experimental Methods 用实验方法研究相邻两个建筑模型之间的冲击

Turkish Journal of Civil Engineering Pub Date : 2023-07-01 DOI: 10.18400/tjce.1287522

Ç. Şekerci, Erdem Damcı

{"title":"Investigation of Pounding between Two Adjacent Building Models with Experimental Methods","authors":"Ç. Şekerci, Erdem Damcı","doi":"10.18400/tjce.1287522","DOIUrl":"https://doi.org/10.18400/tjce.1287522","url":null,"abstract":"This study investigates the pounding phenomenon by shaking table experiments on two scaled building models. Representing the situation where the seismic gap is insufficient, two building models are adjacently positioned on the shaking table, and pounding was investigated for harmonic and strong ground motion excitations. Displacement and acceleration responses were obtained to observe the pounding effect experimentally from video and accelerometer recordings, respectively. The Kelvin-Voigt Model consisting of spring and damper was used for numerical pounding analysis. The most critical parameters of the Kelvin–Voigt model, which are the spring stiffness (ks) and the damping, are calculated according to the coefficient of restitution (r) and were investigated and compared with harmonic experimental results. The obtained parameters, compatible with the harmonic experiments, were used to examine structural behavior under earthquake effect for the case where the building models are positioned for an insufficient seismic gap. For comparison, numerous numerical simulations were realized using different spring stiffnesses and coefficients of restitution. The study shows that when the coefficient of restitution is taken as 0.2 or 0.4, and the ratio of spring stiffness to shear stiffness (ks/k) is 1 or 5, reasonable results in numerical earthquake simulations can be obtained.","PeriodicalId":241324,"journal":{"name":"Turkish Journal of Civil Engineering","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115297758","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

A Relationship for Effective Thermal Conductivity of Reinforced Concrete Structures 钢筋混凝土结构有效导热系数的关系

Turkish Journal of Civil Engineering Pub Date : 2023-07-01 DOI: 10.18400/tjce.1287651

B. Baş, S. Mardmomen, G. Leon, H. Chen

引用次数: 0

Operational Barriers against the Use of Smart Contracts in Construction Projects 在建设项目中使用智能合约的操作障碍

Turkish Journal of Civil Engineering Pub Date : 2023-06-23 DOI: 10.18400/tjce.1322972

Handan Künkcü, K. Koc, A. Gurgun, Houljakbe Houlteurbe Dagou

{"title":"Operational Barriers against the Use of Smart Contracts in Construction Projects","authors":"Handan Künkcü, K. Koc, A. Gurgun, Houljakbe Houlteurbe Dagou","doi":"10.18400/tjce.1322972","DOIUrl":"https://doi.org/10.18400/tjce.1322972","url":null,"abstract":"As an emerging but embryonic way of contract administration, smart contracts can play a prominent role in managing construction projects in an effective manner. However, there are still some barriers preventing the implementation of them in the life cycles of construction projects. This study investigates operational barriers against the adoption of smart contracts in construction projects and explores the challenges in this process. Operational barriers against smart contract implementation are identified through a comprehensive literature review and a focus group discussion is performed to refine the identified barriers. These barriers are evaluated through fuzzy analytical hierarchy process analysis. Finally, a framework is proposed for the adoption of smart contracts effectively in construction projects. 20 operational barriers were attained based on four main barrier categories: technical, financial, security/technological, and time. The results show that financial and technical aspects establish the most significant categories hindering the adoption of smart contracts, while expensive and clunky drafting and registration process, and cost of upskilling are the most significant barriers. Overall, the proposed framework might be useful for practitioners and project managers, who decide to use smart contracts in managing construction projects. The motive behind understanding critical operational barriers is to assist construction practitioners in automating contract execution processes. This study provides a basis for recommending the necessary strategies for the use of smart contracts in the industry to researchers in the construction management field.","PeriodicalId":241324,"journal":{"name":"Turkish Journal of Civil Engineering","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116493233","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