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    <title>Transport Research International Documentation (TRID)</title>
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    <atom:link href="https://trid.trb.org/Record/RSS?s=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" rel="self" type="application/rss+xml" />
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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
    <docs>http://blogs.law.harvard.edu/tech/rss</docs>
    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
      <url>https://trid.trb.org/Images/PageHeader-wTitle.jpg</url>
      <link>https://trid.trb.org/</link>
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    <item>
      <title>Evaluation of Dynamic Response for Freeze–Thaw Damaged RC Beams Subjected to Impact Loading</title>
      <link>https://trid.trb.org/View/2616167</link>
      <description><![CDATA[The impact resistance of in-service freeze-thaw damaged reinforced concrete (RC) bridges is a hot issue in the engineering field. Drop weight impact tests were conducted on RC beams after freeze-thaw cycles (FTCs), and the failure modes and dynamic impact responses were investigated. As the number of FTCs improved, RC beams transitioned from flexural to flexural-shear failure, tending to transition toward shear failure after 125 cycles. With the increase in the degree of freeze-thaw damage, the peak impact force and impact response duration of the RC beams decreased, and the impact energy dissipation was also significantly reduced. Conversely, the peak midspan deflection initially decreased and subsequently increased. Considering the uneven distribution of freeze-thaw damage from the surface to the interior of the concrete, a two-degree-of-freedom model for RC beams subjected to FTCs under impact loading was established. The proposed model can reflect the impact dynamic response process of the beams and shows good agreement with the experimental data.]]></description>
      <pubDate>Wed, 17 Jun 2026 16:14:26 GMT</pubDate>
      <guid>https://trid.trb.org/View/2616167</guid>
    </item>
    <item>
      <title>Effect of Influential Parameters on Lateral Cyclic Response of Posttensioned Base Rocking Steel Bridge Piers</title>
      <link>https://trid.trb.org/View/2616159</link>
      <description><![CDATA[This paper provides a detailed overview of an extensive parametric analysis involving more than 26,000 3D continuum finite element (FE) simulations of posttensioned base rocking steel bridge pier subjected to lateral cyclic loading. The FE model components included a circular tube, tendon, and foundation and base plates. Parameters such as the diameter-to-thickness ratio of tube, height-to-diameter ratio of tube, tendon-to-tube area ratio, prestressing ratio, axial force ratio due to dead load, and base plate thickness and extension were varied. The study measured response quantities such as residual drift, column shortening, and accumulated energy dissipation. It also assessed the impact of successive earthquakes through additional metrics of stiffness and strength degradations. The study was conducted in two primary phases, employing a displacement-based lateral cyclic loading protocol developed to simulate different types of earthquakes. Phase I comprised more than 18,000 static cyclic analyses of the 3D continuum FE model, whereas Phase II combined a 2D macro model (to establish rocking-induced axial force amplification) with a further 8,748 static continuum simulations that incorporated this variable axial load. Findings revealed that the residual drift, ratio of column shortening to height, and response degradations are closely associated with the occurrence of local buckling. The height-to-diameter ratio of tube and base plate dimensions had minimal impacts on these measures. The study confirmed that local buckling could be effectively curtailed by controlling the diameter-to-thickness and axial force ratios. Moreover, it was found that rocking steel piers with initial axial force ratios exceeding 20% had a higher susceptibility for local buckling.]]></description>
      <pubDate>Wed, 17 Jun 2026 16:14:26 GMT</pubDate>
      <guid>https://trid.trb.org/View/2616159</guid>
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    <item>
      <title>A framework for load rating in-service reinforced concrete bridges without construction plans</title>
      <link>https://trid.trb.org/View/2678115</link>
      <description><![CDATA[The load rating assessment of in-service reinforced concrete bridges faces a significant challenge due to the absence of original construction plans. This lack of information makes it difficult to ensure the structural safety of aging bridges under current traffic loads. A framework is proposed to address this issue, presenting a four-level system that requires sequential increments of information to approximate the analysis and the actual structure’s behavior. The proposed workflow should be used before load testing the structure, and the sequential adoption of increasing levels of information may prevent the use of expensive and time-consuming tools; thus, this methodology aims to simplify the structural evaluation process. Ultimately, this workflow enables the structural safety assessment for a specific live load, illustrated by evaluating six bridges under the live loads of ten vehicles. As the level of information increases, so does the bridge’s safety, and reducing the level of information does not lead to unsafe analysis since lower levels are inherently conservative. Bridges designed according to dated standards have an extra hidden load-bearing capacity due to conservative assumptions embedded in their design. Finally, the illustrative application of the workflow proved to be easily adjustable, efficient, and reliable for assessing existing bridges.]]></description>
      <pubDate>Mon, 30 Mar 2026 08:55:11 GMT</pubDate>
      <guid>https://trid.trb.org/View/2678115</guid>
    </item>
    <item>
      <title>Computing in Civil Engineering (2005)</title>
      <link>https://trid.trb.org/View/2681208</link>
      <description><![CDATA[This collection contains more than 179 papers. Topics include: computer aided education; modeling and simulation in support of infrastructure planning; conceptual bridge design; net-based engineering; multi-paradigm and multi-level simulation; non-destructive evaluation of infrastructure; impact of building information modeling on the construction industry; advances in computing in environmental engineering; facility area networks; advances in computing in geotechnical engineering; stochastic search; advance in computing in transportation engineering; advances in computing in structural engineering; AI and machine learning; disaster preparedness, response, and recovery; multi-agent systems; computer aided design; IT for monitoring and maintenance of infrastructure; computer supported collaborative work; human-computer interaction and visualization; computer aided construction; and decision support systems.]]></description>
      <pubDate>Mon, 16 Mar 2026 19:10:08 GMT</pubDate>
      <guid>https://trid.trb.org/View/2681208</guid>
    </item>
    <item>
      <title>A Novel Two-State Active Tuned Mass Damper Inerter Control of High-Flexibility Long-Span Bridges</title>
      <link>https://trid.trb.org/View/2598726</link>
      <description><![CDATA[This paper presents a novel two-state active tuned mass damper inerter (ATMDI) to control the vertical-bending vibration in high-flexibility long-span bridges. Two mathematical models of the ATMDI controlled bridge are established according to the turn-off and turn-on states of the actuator. An optimal passive tuning design that considers actuator dynamics is proposed for the turn-off ATMDI. An adaptive tuning algorithm that combines the consideration of control-structure interaction and the elimination of negative stiffness is proposed for the turn-on ATMDI using few measurements. Finally, the vortex-induced vibration (VIV) events of a long-span high-flexibility bridge are numerically simulated to validate the superiority of the ATMDI control, in which the effects of the wind speed, control variable, and system uncertainty on the ATMDI control performance are discussed. The results indicate that the turn-off ATMDI can effectively mitigate VIV within a wide wind speed range when system uncertainty is small but fails in the VIV mitigation when the system uncertainty level is modest or strong. The turn-on ATMDI with good adaptivity can eliminate the VIV over the entire wind speed range, even at modest and strong system uncertainty level.]]></description>
      <pubDate>Wed, 11 Mar 2026 14:44:03 GMT</pubDate>
      <guid>https://trid.trb.org/View/2598726</guid>
    </item>
    <item>
      <title>Computing in Civil and Building Engineering</title>
      <link>https://trid.trb.org/View/2674332</link>
      <description><![CDATA[This collection of 205 technical papers explores the latest in advanced computing theory and technologies; computing applications in civil and building engineering practice and education; and computing issues, experiences, and lessons learned. Topics include: project life-cycle; Internet and data mining; e-commerce; e-code checking; e-learning; seismic analysis; AEC education; standards; interoperability; CAD, GIS, and GPS; multimedia and virtual reality; 3D and 4D planning in construction; fuzzy sets; neural networks and genetic algorithms; product and process modeling; human factors and future workspaces; structural modeling and analysis; optimization; transportation; tall building analysis and design; water-related projects; support for client requirements and bidding; road maintenance and management; project control, scheduling, and cost; simulation of nonrectilinear structures; FEM and bridges; and simulation-based design.]]></description>
      <pubDate>Mon, 02 Mar 2026 16:13:52 GMT</pubDate>
      <guid>https://trid.trb.org/View/2674332</guid>
    </item>
    <item>
      <title>Structures Congress 2006: Structural Engineering and Public Safety</title>
      <link>https://trid.trb.org/View/2663595</link>
      <description><![CDATA[Proceedings of Structures Congress 2006, held in St. Louis, Missouri, May 18-21, 2006. Topics include: building codes; extreme event loading; structural design, performance, and serviceability; materials, advanced technology, and methods; professional practice and engineering management; infrastructure engineering; and special structures.]]></description>
      <pubDate>Tue, 17 Feb 2026 13:12:18 GMT</pubDate>
      <guid>https://trid.trb.org/View/2663595</guid>
    </item>
    <item>
      <title>Structural Engineering Research Frontiers</title>
      <link>https://trid.trb.org/View/2663601</link>
      <description><![CDATA[Proceedings of the Research Frontiers Sessions of the 2007 Structures Congress, held in Long Beach, California, May 16-19, 2007. Sponsored by the Structural Engineering Institute of the ASCE. Topics include: performance-based design of bridges and buildings, including tall buildings; collapse simulation and experimental studies for reinforced concrete buildings; large-scale testing using E-Defense and NEES laboratory facilities; emerging information technology in earthquake engineering; NEES research on steel and wood buildings, and hybrid testing; seismic rehabilitation of buildings and bridges; and applications and modeling of components and systems constructed with composite materials.]]></description>
      <pubDate>Fri, 13 Feb 2026 16:46:58 GMT</pubDate>
      <guid>https://trid.trb.org/View/2663601</guid>
    </item>
    <item>
      <title>Augmented Reality-Assisted Quality Control for Structural Component Placement in Bridge Construction </title>
      <link>https://trid.trb.org/View/2646964</link>
      <description><![CDATA[Construction quality control is an important part of building reliable infrastructure. This process starts with proper fabrication and depends heavily on how well the components are installed in the field. Construction requirements include surveying, documentation, inspection, and other means to control the quality of component placement during bridge construction. Making sure everything is placed and assembled correctly is key for the performance of the intended structural design over time. For instance, in bridge construction, even when components are fabricated within tolerance, improper placement during assembly can lead to alignment errors that compound over time, potentially affecting structural integrity, safety, and durability. This challenge has been observed in ongoing collaborations with New Mexico Department of Transportation (NMDOT) and Castillo Precast, where the transition from fabrication to field placement may introduce uncertainties that current quality control workflows lack to quantify. There are two main challenges: (1) planning properly given the tight schedules and different teams between the fabrication and installation on time and space, making it difficult to coordinate with all parties (precaster, inspector at the precast plant, truck driver, crane operator, field contractor, consultant at the site, owner); (2) recording, accessing and sharing the construction sequence over the life of the bridge when needed, for example 10-20 years later. 

To address these challenges, this project proposes a digital inspection and verification system that combines 3D scanning and Augmented Reality visualization to support quality control for structural component placement in bridge construction. The goal is to compare the as-built configuration of structural components with the design intent in real time, helping engineers detect deviations early and minimize the risk of cumulative construction errors. By engaging directly with active construction sites in New Mexico, the research takes into account practical challenges such as limited working space, variable lighting, irregular ground surfaces, weather exposure, and the fast-paced nature of construction schedules, all of which can affect the usability and reliability of digital tools in the field. Through this system, field personnel can visualize discrepancies between what was designed and what was built, directly overlaid on the structure without relying only on traditional tape measures, 2D plans, or surveying. The project also develops a QR code installed on each element that provides long-term access to critical data from fabrication and construction to be always at the bridge and accessible by scanning, supporting future inspections and maintenance activities by allowing users to retrieve component information directly on-site using Augmented Reality. ]]></description>
      <pubDate>Tue, 06 Jan 2026 17:16:26 GMT</pubDate>
      <guid>https://trid.trb.org/View/2646964</guid>
    </item>
    <item>
      <title>Partial Prestressing and it’s Application in Concrete Structures -An Overview</title>
      <link>https://trid.trb.org/View/2601658</link>
      <description><![CDATA[Prestressed concrete with its long history has currently become more desirable as it has better mechanical properties and durability performance. The major defect of fully prestressed concrete is its low ductility; it may produce less alarming signs than ordinary reinforced concrete via a smaller deflection and limited cracking. Therefore, partial prestressing is considered an intermediate design solution between the two extremes of reinforcement concrete and prestressed concrete. Combining high-strength concrete with partial prestressing has resulted in increased use of prestressed concrete structures as compared to concerning economy and durability. It has been found that partial prestressing can significantly be used in structural engineering due to extensive development in concrete structural construction techniques. This paper presents the historical overview of partial prestressing; its concept in brief and its application in structural engineering.]]></description>
      <pubDate>Wed, 03 Dec 2025 16:14:08 GMT</pubDate>
      <guid>https://trid.trb.org/View/2601658</guid>
    </item>
    <item>
      <title>Structural optimisation for minimising weight and welding in confined shipbuilding spaces: Enhancing safety and reducing costs</title>
      <link>https://trid.trb.org/View/2599044</link>
      <description><![CDATA[The increasing demands for reduced weight and lower carbon emissions in modern shipbuilding necessitate advanced structural optimisation techniques, particularly within the challenging context of confined manufacturing spaces. Numerous studies on ship structural optimisation have focused on achieving lighter designs, primarily by increasing the number of stiffeners while reducing the thickness of base plates. However, such approaches often lead to higher production complexity, extended fabrication time, and increased costs, especially when introducing new stiffener types. Moreover, welding in confined spaces presents significant challenges related to worker safety and project scheduling. This research proposes a structural optimisation approach that not only minimises structural weight but also reduces the extent of welding required during assembly. A multi-objective genetic algorithm (MOGA) integrated with a response surface methodology and constraint rules classification is employed. The optimisation variables include plate thickness, stiffener thickness, and stiffener dimensions, while maintaining a constant number of stiffeners to avoid additional welding operations. The results demonstrate that stiffened ship panels can be optimised to achieve lighter structures with reduced welding paths, particularly on web plates, thereby enhancing safety and lowering production costs in confined shipbuilding environments.]]></description>
      <pubDate>Wed, 24 Sep 2025 15:31:05 GMT</pubDate>
      <guid>https://trid.trb.org/View/2599044</guid>
    </item>
    <item>
      <title>Research on virtual trial-assembly technology of steel-pipe-arch ribs based on limited perception</title>
      <link>https://trid.trb.org/View/2556639</link>
      <description><![CDATA[Concrete-filled-steel-tube arch bridges often employ solid trial-assembly for the arch ribs to confirm matching accuracy and overall alignment. However, these methods often suffer from issues such as large site occupation, multiple assembly cycles, and prolonged construction periods. This paper proposes a virtual trial-assembly technology of steel-pipe-arch ribs based on limited perception, which achieves rapid virtual trial-assembly without the need for physical segment matching. By obtaining joint control point data through limited measurement perception, the method virtually assembles the control points according to the theoretical manufacturing configuration. It extracts the flange position parameters between the arch rib segments under the ideal configuration condition, ultimately guiding the adjustment and installation of the flanges. Additionally, a self-holding device for steel structure joints is designed, which achieves precise positioning and reliable installation of flanges through parameterized adjustment. A virtual trial-assembly experiment of the steel pipe arch rib joint was conducted using the proposed method. The results of the experiment indicate that the method has high control precision and good technical performance. It has overcome the technical barriers to the application of virtual trial-assembly technology in the construction process and has good potential for promotion and application in similar bridge types.]]></description>
      <pubDate>Thu, 12 Jun 2025 09:19:14 GMT</pubDate>
      <guid>https://trid.trb.org/View/2556639</guid>
    </item>
    <item>
      <title>Analytical and numerical study on bandgap and transmission of periodical truss structures based on phononic crystal theory</title>
      <link>https://trid.trb.org/View/2543351</link>
      <description><![CDATA[Truss structures with obvious periodical repetition in civil engineering are commonly used in long-span bridges and large-span buildings. Based on phononic crystal theory, periodical repetition structures have the potential to develop elastic wave bandgaps, which conduct noise attenuation or novel nondestructive testing. However, there needs to be more current knowledge about the engineering truss structures bandgaps and their potential applications. This study investigates the elastic wave bandgaps and transmission characteristics of two typical engineering truss structures analytically and numerically. The authors first decoupled the unit cells from the large truss structures. Then, the authors proposed a standard analytical model to get the dispersion relationship of the truss structures. The analytical dispersion relationship is verified by the finite element method. The results show that truss structure A could generate a bandgap from 1032 to 2065 Hz, while truss structure B could generate bandgaps from 982 to 1980 Hz. The mode analysis further reveals that the bandgap mechanism is Bragg scattering rather than local resonator. The authors verified the elastic wave transmission characteristics through frequency domain analysis, which agrees well with the bandgaps. To exhibit how the bandgap of the truss structures conducts noise attenuation and potential applications in nondestructive testing, the authors employ two case studies to illustrate the propagation of noise waves and the novel nondestructive testing for periodical truss structures. The results show that the two truss structures could attenuate noise waves. Defects in truss structures could conduct abnormal transmission, which could be applied in novel nondestructive testing.]]></description>
      <pubDate>Thu, 12 Jun 2025 09:19:14 GMT</pubDate>
      <guid>https://trid.trb.org/View/2543351</guid>
    </item>
    <item>
      <title>Negative stiffness enhanced TMD for seismic response mitigation of bridges isolated with friction pendulum system (FPS)</title>
      <link>https://trid.trb.org/View/2521100</link>
      <description><![CDATA[Traditional seismic isolators, such as the friction pendulum system (FPS), exhibit high isolation efficiency during slight-to-moderate earthquakes, but their ability to constrain isolation deformations under severe earthquakes remains limited. The negative stiffness enhanced tuned mass dampers (NS-TMDs), which exist in two configurations (NS-TMD I and NS-TMD II), have been successfully employed to improve the seismic performance of isolated bridges. However, previous studies have focused primarily on the control performance of NS-TMDs in simplified linear systems, without considering structural nonlinearities. To address this gap, this paper explores the effectiveness of using NS-TMDs for the seismic protection of bridges isolated with a FPS, and proposes a stability-based optimization strategy for NS-TMDs. In particular, the working mechanism and mechanical model of NS-TMDs are first introduced. The control devices are integrated into a FPS-isolated single-degree-of-freedom (SDOF) system. For this system, the nonlinear equilibrium equations are formulated, and a stochastic linearization analysis is performed. Subsequently, a stability-based optimization strategy is proposed for NS-TMDs and their control performance under stationary excitation is examined. Finally, a comprehensive analysis on the control effectiveness of NS-TMDs in the FPS-isolated bridge under non-stationary excitation is conducted. The results show that the optimized NS-TMDs could enhance the isolation efficiency of FPS while effectively constraining isolation deformation within a limited range under both far-field and near-fault earthquakes. In addition, NS-TMD I demonstrates greater effectiveness in reducing deck acceleration than deck displacement, whereas NS-TMD II exhibits the opposite trend. Overall, NS-TMDs provide an effective vibration control solution for improving the seismic performance of FPS-isolated bridges.]]></description>
      <pubDate>Thu, 17 Apr 2025 16:55:58 GMT</pubDate>
      <guid>https://trid.trb.org/View/2521100</guid>
    </item>
    <item>
      <title>Reinforcement of arch structures under blast loads: a sustainable approach to structural enhancement</title>
      <link>https://trid.trb.org/View/2520998</link>
      <description><![CDATA[This study investigates the effectiveness of strengthening masonry arch bridges using steel rebars embedded within the arch structure to enhance their blast resistance. A comprehensive numerical analysis is conducted using Abaqus software, where a VUMAT code is developed to accurately model the nonlinear behavior of materials. The analysis is complemented by comparing the behavior of strengthened and un-strengthened arches subjected to shock waves. Results demonstrate an improvement in the structural resilience of the reinforced arches, including reduced deformation, increased load-bearing capacity, and delayed failure mechanisms under high-intensity blasts. The findings offer practical insights for the preservation and fortification of masonry arch bridges, providing a reliable solution for enhancing their durability in the face of modern threats.]]></description>
      <pubDate>Thu, 27 Mar 2025 15:06:21 GMT</pubDate>
      <guid>https://trid.trb.org/View/2520998</guid>
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