Journal of Structural Integrity and Maintenance最新文献_第4页

Injection of discontinuities in concrete dams with cement-based grouts 水泥基灌浆混凝土坝中的不连续面注入

IF 2.1

Journal of Structural Integrity and Maintenance Pub Date : 2022-09-30 DOI: 10.1080/24705314.2022.2088070

João Conde Silva, C. Serra

{"title":"Injection of discontinuities in concrete dams with cement-based grouts","authors":"João Conde Silva, C. Serra","doi":"10.1080/24705314.2022.2088070","DOIUrl":"https://doi.org/10.1080/24705314.2022.2088070","url":null,"abstract":"ABSTRACT Injecting discontinuities is a recurrent procedure for the rehabilitation of concrete hydraulic structures, namely repairing cracked dam bodies and deteriorated lift and contraction joints. Within this scope, a relatively detailed description of the most important cement injection grouts features is presented, including the main advantages and drawbacks compared to alternatives. The cement-based grouts are among the most utilised materials in these contexts. Economic and environmental related aspects are among the main advantages of cement-based grouts, although some technical features of these grouting materials are also favourable. The equipment utilised for the preparation and for the application of cementitious grouts is also mentioned. This document also addresses aspects related to the assessment of concrete dams’ stability, the preparatory works, the common methodologies and the standard precautions to have into account when planning a rehabilitation operation involving cement grouting for filling cracks or repairing lift or contraction joints in these massive structures. A list of successful rehabilitation case histories is provided, including a short description of the anomalies and their causes, as well as a summary of the main repair measures adopted for each situation.","PeriodicalId":43844,"journal":{"name":"Journal of Structural Integrity and Maintenance","volume":"7 1","pages":"252 - 264"},"PeriodicalIF":2.1,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42241677","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: 3

A study of multi-target image-based displacement measurement approach for field testing of bridges 基于多目标图像的桥梁现场测试位移测量方法研究

IF 2.1

Journal of Structural Integrity and Maintenance Pub Date : 2022-09-30 DOI: 10.1080/24705314.2022.2088071

Isaias A. Colombani, B. Andrawes

{"title":"A study of multi-target image-based displacement measurement approach for field testing of bridges","authors":"Isaias A. Colombani, B. Andrawes","doi":"10.1080/24705314.2022.2088071","DOIUrl":"https://doi.org/10.1080/24705314.2022.2088071","url":null,"abstract":"ABSTRACT As the demand for field testing of bridges grows, so does the need to optimize field testing procedures to allow for a simplified testing strategy that can be employed more effectively. With the advent of computer vision, there has been limited research exploring Feature-Based Image Registration (FBIR) methods for structural testing of bridges. In this paper, the potential of a simple FBIR approach to accurately capture submillimeter displacements using consumer-grade cameras will be demonstrated through a field test on a reinforced concrete slab bridge and on a full-scale bridge deck specimen in the laboratory. The internal and external parameters that influence the results of this measurement strategy were investigated by using various camera positions during the laboratory tests and applying different threshold parameters to the Speeded-Up Robust Features algorithm used for the feature detection and matching. The FBIR method demonstrates great potential, producing an average measurement accuracy within 1.6% of conventional displacement sensors during the field test and 3.3% during the laboratory tests. Altogether, the advantages to this image-based measurement approach enhance the load testing strategy to be implemented by bridge owners at much lower costs and with minimal complication and field setup.","PeriodicalId":43844,"journal":{"name":"Journal of Structural Integrity and Maintenance","volume":"7 1","pages":"207 - 216"},"PeriodicalIF":2.1,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47467202","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: 6

Flexural performance of CFRP strengthened beams - comparison with analytical model CFRP加固梁的抗弯性能——与解析模型的比较

IF 2.1

Journal of Structural Integrity and Maintenance Pub Date : 2022-09-30 DOI: 10.1080/24705314.2022.2088056

P. Prabhakaran, G. Joseph

{"title":"Flexural performance of CFRP strengthened beams - comparison with analytical model","authors":"P. Prabhakaran, G. Joseph","doi":"10.1080/24705314.2022.2088056","DOIUrl":"https://doi.org/10.1080/24705314.2022.2088056","url":null,"abstract":"ABSTRACT In recent years, strengthening methods for reinforced concrete structures using fibre-reinforced polymer (FRP) composites have been gaining widespread interest and growing acceptance in civil engineering industry. Near surface mounted (NSM) reinforcement as well as externally bonded reinforcement (EBR) sheets have emerged as new strengthening methods in which external reinforcement (in the form of bars or sheets) is embedded into grooves or adhered to the section with epoxy adhesive. This paper proposes a simplified analytical approach to predict flexural behaviour of simply supported reinforced-concrete (RC) beams strengthened with carbon fibre-reinforced polymer (CFRP) using the above-mentioned methods. The flexural capacity and deformational behaviour of FRP strengthened beams are analysed using trilinear moment curvature relationship at three critical points namely (i) crack initiation point (ii) steel yield initiation point and (iii) ultimate capacity point, based on strain compatibility and principles of equilibrium. A good predictive performance of analytical model is appraised by simulating force-deflection response registered in the experimental program composed of RC beams strengthened with NSM as well as EBR methods. The analytical solutions have also given accurate prediction of experimental results in the literature regardless of the arrangement of CFRP reinforcement.","PeriodicalId":43844,"journal":{"name":"Journal of Structural Integrity and Maintenance","volume":"7 1","pages":"226 - 237"},"PeriodicalIF":2.1,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42999218","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: 4

Comparative study on sensitivity of acceleration and strain responses for bridge health monitoring 桥梁健康监测中加速度与应变响应灵敏度的比较研究

IF 2.1

Journal of Structural Integrity and Maintenance Pub Date : 2022-09-30 DOI: 10.1080/24705314.2022.2088167

Smriti Sharma, Sunil Kumar Dangi, Shivam Kumar Bairwa, Subhamoy Sen

{"title":"Comparative study on sensitivity of acceleration and strain responses for bridge health monitoring","authors":"Smriti Sharma, Sunil Kumar Dangi, Shivam Kumar Bairwa, Subhamoy Sen","doi":"10.1080/24705314.2022.2088167","DOIUrl":"https://doi.org/10.1080/24705314.2022.2088167","url":null,"abstract":"ABSTRACT Bridge health monitoring has been attempted to ensure the safety of the bridges in their operations, employing various measurement options like acceleration, strain, displacement, etc. The relative efficacy of these measurements as a damage-sensitive response has remained a topic of research. While acceleration has traditionally been used in abundance, dynamic strain, being relatively cheaper to record, also holds the potential to replace acceleration. This study undertakes a comparative investigation weighing the relative benefits of both the measurement options for prompt and reliable damage detection in both the time and frequency domain. The comparison is drawn in the light of damage sensitivity, intensity and consistency of the damage signature of the adopted measurement type while keeping the damage and loading specifications unaltered. A multi-span concrete box girder has been replicated with a high-fidelity numerical model as a proxy for the real structure followed by an experimental validation on a propped cantilever beam. Acceleration and strain responses are measured and analyzed for different damage conditions. A rigorous sensitivity analysis is undertaken to compare explicitly the performance of both the measurement options. The results demonstrated superior performance with the strain response in time and frequency domains from consistency and intensity perspectives.","PeriodicalId":43844,"journal":{"name":"Journal of Structural Integrity and Maintenance","volume":"7 1","pages":"238 - 251"},"PeriodicalIF":2.1,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45867286","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: 5

Characteristics of saferoom/shelter wall structures—a state-of-the-art review 安全室/遮蔽墙结构的特点——最新综述

IF 2.1

Journal of Structural Integrity and Maintenance Pub Date : 2022-09-30 DOI: 10.1080/24705314.2022.2088330

M. Soltani, Eugenia Akurang

{"title":"Characteristics of saferoom/shelter wall structures—a state-of-the-art review","authors":"M. Soltani, Eugenia Akurang","doi":"10.1080/24705314.2022.2088330","DOIUrl":"https://doi.org/10.1080/24705314.2022.2088330","url":null,"abstract":"ABSTRACT There are several ongoing humanitarian crises all around the world that have led to many refugees, who need affordable shelters and saferooms. Additionally, these structures are widely located in the backyard of homes in case of hurricanes, tornados, and/or earthquakes. This paper presents a chronological literature review of investigations and comparisons on characteristics of different type of saferoom/shelter wall systems. The characteristics, scrutinized in this study for each type of wall, include structural strength, construction cost, time to construct, and sustainability of saferoom/shelter walls. The most significant contributions of these studies are identified and presented. The results showed that soilbag shelter walls can be constructed with relatively low cost, relatively shorter time, and being relatively more sustainable compared to other types of shelter walls considered in this study. Soil-filled earthbag specimens are stronger and stiffer than gravel-filled specimens of identical size and stack geometry. Using locally available materials minimizes the energy needed and pollution produced due to material transportations. Furthermore, recyclable waste bags can be used to produce bags in soilbags. A slanted roof can be used in any type of shelter wall to harvest rainwater for each shelter use. Moreover, the literature review indicated that the shelter walls made of CLT, and lumber panels are generally stronger against wind loads (250-mph) compared to walls made of soilbags (225-mph).","PeriodicalId":43844,"journal":{"name":"Journal of Structural Integrity and Maintenance","volume":"7 1","pages":"265 - 270"},"PeriodicalIF":2.1,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45832233","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

Structural assessment of the historic Ten Arches Bridge in Jordan 约旦历史悠久的十拱桥的结构评估

IF 2.1

Journal of Structural Integrity and Maintenance Pub Date : 2022-06-17 DOI: 10.1080/24705314.2022.2048242

Tamer Eljufout, Mohammad Abu Shaqra, Qais Jamous, Ram Salameh, Zaid Jamous

{"title":"Structural assessment of the historic Ten Arches Bridge in Jordan","authors":"Tamer Eljufout, Mohammad Abu Shaqra, Qais Jamous, Ram Salameh, Zaid Jamous","doi":"10.1080/24705314.2022.2048242","DOIUrl":"https://doi.org/10.1080/24705314.2022.2048242","url":null,"abstract":"ABSTRACT The Ten Arches Bridge is a historical stone bridge that is located in Amman, Jordan. The bridge has a valuable cultural heritage as it was built in 1908 to serve the Hejaz Railway Line. This study presents a structural assessment of the bridge including a field inspection, experimental investigation, and numerical structural analysis. The study also investigates the efficacy of utilizing in-situ Non-Destructive Testing (NDT) such as Rebound Hammer (RH) and Ultrasonic Pulse Velocity (UPV) tests in the assessment of stone arch bridges. Detailed experimental and numerical investigations were performed to identify the structural integrity of the bridge by evaluating the acting stresses and displacements under static and dynamic loads. Minor deteriorations were found in the bridge’s body due to human and environmental factors. However, the geometrical properties of the bridge have not been significantly changed. The obtained results of the numerical analysis concluded that the bridge can sustain the current imposed dead and traffic loads, but not serve seismic actions. Compressive strength and modulus of elasticity of stone units obtained by RH and UPV tests are in agreement with the laboratory tests. Accordingly, NDT techniques can provide and verify basic mechanical properties that are needed for numerical analyses.","PeriodicalId":43844,"journal":{"name":"Journal of Structural Integrity and Maintenance","volume":"7 1","pages":"168 - 176"},"PeriodicalIF":2.1,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43496286","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: 1

Vibration control of an articulated tower with a tuned mass damper subjected to the inertial force of ground acceleration 具有调谐质量阻尼器的铰接塔在地面加速度惯性力作用下的振动控制

IF 2.1

Journal of Structural Integrity and Maintenance Pub Date : 2022-06-17 DOI: 10.1080/24705314.2022.2048240

Duy-Chinh Nguyen

引用次数: 2

Probabilistic deterioration modeling of bridge component condition with random effects 随机影响下桥梁构件状态的概率劣化建模

IF 2.1

Journal of Structural Integrity and Maintenance Pub Date : 2022-06-17 DOI: 10.1080/24705314.2022.2048244

Milhan Moomen, C. Siddiqui

{"title":"Probabilistic deterioration modeling of bridge component condition with random effects","authors":"Milhan Moomen, C. Siddiqui","doi":"10.1080/24705314.2022.2048244","DOIUrl":"https://doi.org/10.1080/24705314.2022.2048244","url":null,"abstract":"ABSTRACT Timely maintenance of bridge components is critical for bridge management functions. With reliable deterioration models, highway agencies can efficiently allocate funding for bridge maintenance and customize maintenance schedules to meet agency budgets. The increased public expectation of acceptable levels of service for bridges coupled with other competing needs makes it crucially important to accurately estimate bridge future conditions so that adequate resources may be allocated for repair and reconstruction purposes. Accurately predicting bridge condition is challenging due to the inherent random nature of factors impacting deterioration, the existence of unobserved variables that are not measured, panel nature of the data and the effects of bridge-specific correlation. Without accounting for these factors, the resulting estimated deterioration models may have biased and inconsistent parameter estimates. This article assembled a comprehensive set of bridge and climate data from the National Bridge Inventory (NBI) and the South Carolina Climatology office. Bridge component deterioration models for bridges on state highways in South Carolina were estimated using an ordered probit model with random effects specification to account for the randomness and panel nature of the bridge data. The study results are useful for various bridge management tasks including maintenance programming, budgeting and bridge asset evaluation.","PeriodicalId":43844,"journal":{"name":"Journal of Structural Integrity and Maintenance","volume":"7 1","pages":"151 - 160"},"PeriodicalIF":2.1,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48067571","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: 5

In-plane behaviour of masonry walls embedding with steel welded wire mesh overlay with mortar 砂浆覆盖钢焊接网砌筑墙的面内性能

IF 2.1

Journal of Structural Integrity and Maintenance Pub Date : 2022-06-17 DOI: 10.1080/24705314.2022.2048241

Teiborlang Warjri, Donkupar Francis Marbaniang, C. Marthong

引用次数: 6

Effect of carbonation on chloride transportation parameters in cementitious materials 碳化对胶凝材料中氯离子输运参数的影响

IF 2.1

Journal of Structural Integrity and Maintenance Pub Date : 2022-06-17 DOI: 10.1080/24705314.2022.2048245

I. Yoon, Chun-Lai Chang, Jin-Won Nam

引用次数: 3