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    <title>Transport Research International Documentation (TRID)</title>
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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>
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      <title>Transport Research International Documentation (TRID)</title>
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      <link>https://trid.trb.org/</link>
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    <item>
      <title>PRESTRESS TENDONS ON SHORT RADIUS CURVES</title>
      <link>https://trid.trb.org/View/62210</link>
      <description><![CDATA[This report discusses the friction factor and ultimate tensile strength achieved by multi-strand tendons stressed around short radius curves. It was found that a pre-fabricated tendon of as many as 33 one-half-inch diameter strands, stressed through 1.7 radians of arc in a 10 foot radius, can develop its normal ultimate strength. The commonly used friction factors for rigid conduit, of k=0.0002 and u=0.25 were found to be valid for this configuration with some controls. The research project has been terminated because of a change in design philosophy, and because of the permanent cancellation of the construction project which would have completed the structure to be tested.]]></description>
      <pubDate>Mon, 06 Oct 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/62210</guid>
    </item>
    <item>
      <title>PARADISE CROSSED</title>
      <link>https://trid.trb.org/View/487830</link>
      <description><![CDATA[Despite a mountain of obstacles, the designers and builders of Hawaii's Interstate H-3 produced a highway that celebrates and preserves its lush natural surroundings.  The four-lane roadway crosses undeveloped, environmentally sensitive terrain and important archaeological and cultural sites and burrows nearly a mile (1.6 km) through the scenic but rugged Koolau Mountains in a twin-bore tunnel.  The fragile Hawaiian ecology was a consideration in all aspects of the project.  The tunnel is located high enough in the mountain to ensure that precious water resources will not need draining.  The long span and cantilevered construction of the viaducts limit disruption of the vegetation below, and concrete for the tunnel portals and viaducts is colored to blend with the natural rock outcroppings.]]></description>
      <pubDate>Fri, 14 Aug 1998 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/487830</guid>
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    <item>
      <title>EFFICIENT SOLUTION METHOD OF EIGENPROBLEMS FOR DAMPED STRUCTURAL SYSTEMS USING MODIFIED NEWTON-RAPHSON TECHNIQUE</title>
      <link>https://trid.trb.org/View/486075</link>
      <description><![CDATA[An efficient solution method is presented to solve the eigenvalue problem arising in the dynamic analysis of nonproportionally damped structural systems.  The proposed method is obtained by applying the modified Newton-Raphson technique and the orthonormal condition of the eigenvectors to the linear eigenproblem through matrix augmentation of the quadratic eigenvalue problem.  In the iteration methods, such as the vector inverse iteration and subspace iteration methods, singularity may occur during the factorizing process when the shift value is close to an eigenvalue of the system.  However, even though the shift value is an eigenvalue of the system, the proposed method provides nonsingularity, if the desired eigenvalue is not multiple, and this is analytically proved.  Because the modified Newton-Raphson technique is adapted to the proposed method, initial values are needed.  The initial values of the proposed method can be obtained by the intermediate results of iteration methods or results of approximate methods.  Because the Lanczos method effectively produces better initial values than other methods, the results of the Lanczos method are taken as the initial values of the proposed method.  Two numerical examples are presented to demonstrate the effectiveness of the proposed method.]]></description>
      <pubDate>Sat, 30 May 1998 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/486075</guid>
    </item>
    <item>
      <title>PIECEWISE LINEAR WARPING THEORY FOR MULTILAYERED ELASTIC BEAMS</title>
      <link>https://trid.trb.org/View/485946</link>
      <description><![CDATA[Warping caused by transverse shear in multilayered elastic beams is studied in this paper.  The Bernoulli-Kirchhoff hypothesis that plane sections remain plane after deformations, with independent rotations, is assumed for each lamina to account for the out-of-plane deformation of the composite cross section.  The effects of shear are included by taking the rotations independent of the transverse deflection, as in Timoshenko beam theory.  The result is a simple piecewise linear warping theory for layered composite beams.  The solution to the governing equations is presented in terms of the eigenvalues and eigenvectors of a generalized matrix eigenvalue problem associated with the coefficient matrices that appear in the governing equations.  The problem of a two-layered cantilever beam subjected to a uniformly distributed loading is solved in detail to show the effects of different elastic moduli on the interfacial shear stress.  Compared with a finite-element solution, the current theory yields significant improvement over elementary beam theory (excluding warping) in predicting the interface shear stress.]]></description>
      <pubDate>Fri, 08 May 1998 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/485946</guid>
    </item>
    <item>
      <title>THE LPC FATIGUE TEST: A GENERALLY APPLICABLE TEST?</title>
      <link>https://trid.trb.org/View/477519</link>
      <description><![CDATA[The LPC fatigue test, conducted on a trapezoidal cantilever element with strains and temperatures controlled, is one of the fundamental tests used to obtain information about the life of a bituminous mix. This is a test that could be used generally, especially since the existing data base (more than two hundred results) may make interpretation easier. The aim of this paper is to give the reader the information needed to draw conclusions concerning this development.]]></description>
      <pubDate>Fri, 01 May 1998 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/477519</guid>
    </item>
    <item>
      <title>SECOND-ORDER ELASTIC PLANE-FRAME ANALYSIS USING FINITE-ELEMENT METHOD</title>
      <link>https://trid.trb.org/View/577516</link>
      <description><![CDATA[Members of a plane-frame structure may be subjected to a combination of lateral loads, end moments, and axial forces. Analysis of such a structure may be classified as elementary, first-order, or second-order, depending on the load conditions, magnitude of displacements, and method of solution.  A numerical procedure is presented for the solution of geometrically nonlinear problems considering second-order effects.  After a brief literature review, the paper presents the assumptions pertinent to the research; the relationship between the engineering strain and Green strain tensor considering small strain and moderate to large rotations; finite-element consideration in the derivation of the incremental stiffness matrices using increments of total potential energy and the concepts of a variational method; a procedure for the solution of the nonlinear problems and its algorithm; numerical examples and comparison of the numerical results with published literature; and conclusions and results.  The algorithm that is presented is useful in identifying the differences between the first- and second-order analysis of structural systems.]]></description>
      <pubDate>Tue, 28 Oct 1997 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/577516</guid>
    </item>
    <item>
      <title>USING IMPACT-ECHO TO ASSESS TENDON DUCTS</title>
      <link>https://trid.trb.org/View/482820</link>
      <description><![CDATA[A total of seven cantilever beams (each containing two ducts) were evaluated during the preliminary site investigation. In a number of the beams, cracks which extended through the webs of the beams were observed along the tendon trajectory. Although in these cases the impact-echo responses did not always follow the "ideal" patterns, it was still possible to identify the presence of voids in the tendon ducts.]]></description>
      <pubDate>Wed, 07 May 1997 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/482820</guid>
    </item>
    <item>
      <title>DYNAMIC BEHAVIOR OF CONTINUOUS AND CANTILEVER THIN-WALLED BOX GIRDER BRIDGES</title>
      <link>https://trid.trb.org/View/470927</link>
      <description><![CDATA[The objective of this study is to investigate the dynamic characteristics and impact of continuous and cantilever box girder bridges with different vehicle models, road surface roughnesses, as well as vehicle speeds. In this study, the bridge is modeled as a thin-walled structure with deformable cross sections. The traveling vehicle is treated as a non-linear space model. Multitruck loading is considered in both transverse and longitudinal directions of the bridge. The results obtained in this study are significant for both practical bridge design and further theoretical study of continuous and cantilever box girder bridges.]]></description>
      <pubDate>Thu, 27 Feb 1997 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/470927</guid>
    </item>
    <item>
      <title>APPLICATION OF FINITE ELEMENT METHOD TO THE STABILITY OF AN ECCENTRICALLY LOADED COLUMN BY SLAVE LOADS INCLUDING DAMPING</title>
      <link>https://trid.trb.org/View/437276</link>
      <description><![CDATA[The finite element method is used to analyse the stability of a cantilever column resting on elastic foundation and subjected to an eccentric slave load at its free end. The analysis has been conducted according to Bernoulli-Euler and Timoshenko beam theories. Effects of the mass offset, coupling effects and damping has been taken into account.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/437276</guid>
    </item>
    <item>
      <title>AERODYNAMIC STABILITY OF A BEAM IN STEADY FLOW</title>
      <link>https://trid.trb.org/View/443255</link>
      <description><![CDATA[The galloping response of a cantilever Euler-Bernoulli beam of an arbitrary cross-section in a steady flow is investigated. A simple closed for analytical solution and stability criteria as well as the numerical results are presented.  The boundary value problem, describing mutually coupled screw bending and torsion, is analytically approximately solved by the Boobnov-Galerkin method.  The resulting initial value problem is then solved by the Krylov-Begoliuboff asymptotic technique at the critical angle flow in accordance with Den Hartog's criterion.  For a particular beam with a right-angle cross-section, for which aerodynamic properties and its dynamic response were experimentally determined elsewhere, the results compare favourably.  The analysis of the right-angle section response shows that the overall influence of the cross-sectional shear centre eccentricity may play an important role in substantially diminishing the critical flow velocity threshold value and therefore should not be disregarded.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/443255</guid>
    </item>
    <item>
      <title>OPTIMIZATION OF CRACK LENGTH MEASUREMENT BY DCPD IN DCB SPECIMENS</title>
      <link>https://trid.trb.org/View/445521</link>
      <description><![CDATA[Optimization of four-probe DCPD crack length measurement was carried out experimentally for a NACE standard double cantilever beam (DCB) specimen with side-grooves, for which the solution based on available analytical or numerical approaches remains difficult due to specimen geometry.  The optimum lead positions give good combined sensitivities to both absolute output and relative DCPD ratio, as well as a good linear correlation with crack length.  A DCB analogue with uniform thickness has also been further tested.  The results showed that the principles of the optimization hold for DCB specimens with or without side grooves. Technical points related to the four-probe DCPD method are discussed.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/445521</guid>
    </item>
    <item>
      <title>JACKUP CANTI-LEG: AN EXTENDED REACH SYSTEM</title>
      <link>https://trid.trb.org/View/446952</link>
      <description><![CDATA[The "canti-leg" jackup, an abbreviated name for cantilever-leg, is a portable, self erecting, compact structural support system that can be used with most cantilevered jackups main cantilever beams. It converts the cantilever beams into simply supported beams, which result in full rated hook, set back, etc, loads at up to 80 foot and in some cases 90 foot extension.  The relative motion between the production platform and jackup is absorbed via a bearing assembly that is mounted on the "A" frame support sitting on the platform.  The canti-leg is an attractive and economic alternative to reach wells on multi-well platforms that were uneconomic and/or impractical with other methods.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/446952</guid>
    </item>
    <item>
      <title>BEAM DESIGN WITH A NEW APPROACH TO THE FINITE ELEMENT METHOD</title>
      <link>https://trid.trb.org/View/391139</link>
      <description><![CDATA[ not available]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/391139</guid>
    </item>
    <item>
      <title>FLEXURAL-TORSIONAL BUCKLING OF STRUCTURES</title>
      <link>https://trid.trb.org/View/386649</link>
      <description><![CDATA[This book covers current methods of analyzing the role of flexural-torsional buckling in structural failure. Chapters examine equilibrium, buckling and total potential; buckling analysis of simple structures; finite element buckling analysis; simply supported and restrained beams and columns; cantilevers; and strength of steel members.]]></description>
      <pubDate>Tue, 12 Apr 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/386649</guid>
    </item>
    <item>
      <title>DISTORTIONAL BUCKLING OF STEEL BEAMS IN CANTILEVER-SUSPENDED SPAN CONSTRUCTION</title>
      <link>https://trid.trb.org/View/370578</link>
      <description><![CDATA[The behavior of cantilever suspended span systems is influenced by the type of loading and the presence of flange restraint.  An experimental progam consisting of 33 full-scale tests was undertaken to examine the stability of beams in a single overhang configuration.  The results indicate that torsional flange restraint significantly enhances the buckling resistance and is particularly effective when combined with a web stiffener. Lateral bracing of the bottom flange at column supports is of considerable importance in maintaining stability.  Simulating the proper boundary conditions is essential.  A finite element model was developed that takes into account inelastic material behavior, residual stresses and crossectional distortions.  The predicted buckling capacities are in good agreement with experimental results.]]></description>
      <pubDate>Wed, 08 Dec 1993 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/370578</guid>
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