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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <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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      <title>Lateral stress profiles on integral bridge abutments</title>
      <link>https://trid.trb.org/View/1569913</link>
      <description><![CDATA[]]></description>
      <pubDate>Mon, 26 Nov 2018 16:59:06 GMT</pubDate>
      <guid>https://trid.trb.org/View/1569913</guid>
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      <title>Development of probabilistic models for resistance and load effects for the bridge design code</title>
      <link>https://trid.trb.org/View/1198388</link>
      <description><![CDATA[Probabilistic models for structural resistance and load effects have been constructed using available data.  This paper discusses the lack of sufficient data to adequately describe the complete probability distribution.  The statistical parameters of strength and load effects are used to compute safety indices for the ultimate limit state for bridge superstructures.  The load effects considered are due to dead load and traffic live load, the predominant bridge superstructure loads.  Safety indices have been computed for prestressed concrete members designed to the existing NAASRA bridge design specification and also in accordance with the draft bridge design code in limit states format.  The draft code has achieved a more uniform level of reliability but shows some inconsistency between the different spans (A).]]></description>
      <pubDate>Fri, 24 Aug 2012 16:03:21 GMT</pubDate>
      <guid>https://trid.trb.org/View/1198388</guid>
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      <title>MODEL TESTS ON HULL-DECKHOUSE INTERACTION</title>
      <link>https://trid.trb.org/View/163909</link>
      <description><![CDATA[To check a theory and formula proposed by H. H. Bleich on stress relationship of hull and house for vessels fitted with long deckhouses.  Theory based upon concept of separate house and hull bending with interaction strongly dependent upon vertical stiffness of support of house. Nine tests were performed upon a single 20-ft. aluminum model with three separate houses, fitted for simple variation of underdeck stiffness.  The hull of double-cell construction, connected by fitted bolts and high-torque bolts with houses 160 and 80 in. in length and demountable main deck equipped with simulated deck beams.  Design based upon proportionality of elastic action of ships and model with midship proportions in general conformance with passenger vessel practice.  Range of Bleich u value for nine tests representative of ship values to be expected.  Model loaded to give constant hogging moment throughout length of house.]]></description>
      <pubDate>Thu, 21 May 1981 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/163909</guid>
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      <title>RUBBER-MOUNTED SUPERSTRUCTURE REDUCES NOISE IN NEW ESSO PRODUCTS CARRIER</title>
      <link>https://trid.trb.org/View/165684</link>
      <description><![CDATA[A 2,190 tonne d.w. ESSO products carrier, recently delivered by Cochrane Shipbuilders Ltd. of Yorkshire, England, is believed to be the first British-owned ship to incorporate a noise reduction system (developed, manufactured and patented by Grunsweig and Hartmann of Hamburg) which involves mounting the entire deckhouse structure on flexible rubber mountings.  The mountings are designed to prevent noise from the machinery being transmitted into the accommodation spaces, and to achieve this as effectively as possible there are no rigid links between the main hull and the deckhouse.  The mountings themselves consist of rubber strips sandwiched between two halves of a channel-section arrangement fixed longitudinally along the ship.  Rubber mountings are positioned at either end of the deckhouse to prevent fore and aft movement of the deckhouse by acting as buffers in the event of a collision.]]></description>
      <pubDate>Thu, 12 Mar 1981 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/165684</guid>
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    <item>
      <title>CASE STUDY IN SUPERSTRUCTURE DESIGN</title>
      <link>https://trid.trb.org/View/93760</link>
      <description><![CDATA[The study looks into the problem of superstructure design in smaller cargo ships, particularly the 500 grt bracket.  A very controversial situation comes about when improving living conditions for the crew resulting in loss of deadweight and earning capacity.  The paper suggests some alternative ways of dealing with this situation without changing the tonnage or manning regulations, but emphasizes that unsound conditions exist in the 500 grt bracket.  Order from NSFI as No. 17115.]]></description>
      <pubDate>Sat, 15 Sep 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/93760</guid>
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      <title>DESIGN WORKSHOPS--SUPERSTRUCTURE</title>
      <link>https://trid.trb.org/View/83903</link>
      <description><![CDATA[A compilation of the results of 4 three-day design workshops concerned with ship superstructure layouts, run by Sealife for mixed groups of owners, builders, seafarers and Department of Trade representatives.  Includes a guide for running such workshops as a means of producing better ship designs.]]></description>
      <pubDate>Sat, 30 Jun 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/83903</guid>
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    <item>
      <title>ELASTIC FOUNDATION OF DECKHOUSES</title>
      <link>https://trid.trb.org/View/81970</link>
      <description><![CDATA[The elastic foundation of deckhouses has proved to be a very effective way to avoid deckhouse vibrations, which have caused major problems with regard to the environmental quality in the living quarters for crew and passengers. Well over one hundred ships are presently equipped with elastic foundations of differing designs.  The paper deals with various aspects concerning this structural detail.  A brief description of the vibration isolation problem is followed by a description of the static and dynamic loads on the foundation elements.  A description of various design concepts presently in use if followed by general design considerations such as concerning the frictionless connection between ship and deckhouse for piping and electrical cables.  The experimental work is subdivided into two steps, one concerning the characteristics of the foundation elements and the second regarding the overall behaviour of the elastically supported deckhouse.  In detailed investigations on a few typical foundation elements the stiffness and strength characteristics regarding the transmission of vertical and horizontal forces are determined.  The extent of nonlinearities in the stiffness behaviour is discussed.  Experiments with a mechanical exciter on board of acutal ships with elastically supported deckhouses constitute the second step.  Here the destinction is made between excitation on the ship's deck and excitation in the deckhouse.  Results of measurements on ships in service are also discussed.]]></description>
      <pubDate>Wed, 25 Apr 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/81970</guid>
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      <title>STUDY ON THE "MOBILITY" OF DIFFERENT STRUCTURAL DESIGNS FOR THE SUPERSTRUCTURE OF A CARGO FERRY</title>
      <link>https://trid.trb.org/View/74574</link>
      <description><![CDATA[After an introduction in which he mentions some advantages of the finite-element method and the "mobility" (force/response relationship) concept in the prediction of the vibratory behaviour of ship structures, the Author compares the mobility of two structural designs for the superstructure of a cargo ferry, with the object of providing the designer with criteria for an optimum solution.  The calculations were made with the FRENAT-FORMAN program package developed by CETENA.  The study is described under the main headings: Description of the designs; Mathematical model; Methodology for calculating mobility; Results and their comparison; Conclusions.  Order from: BSRA No. 47,463.]]></description>
      <pubDate>Tue, 14 Mar 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/74574</guid>
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      <title>ON THE STRESS DISTRIBUTION AT THE BASE OF THE FRONT CORNERS OF ACCOMMODATION STRUCTURES</title>
      <link>https://trid.trb.org/View/67197</link>
      <description><![CDATA[The accommodation structure of a ship is generally arranged at the stern.  Longitudinal bending moments give little effect there.  However, corners of the fore end where the accommodation structure is connected with the main hull are still subjected to high concentrated stress due to discontinuity of the structure.  Though the rounded corner of the fore end wall is known to relieve the stress, a right-angle structure has lately been adopted, mainly for the convenience of work, but it has caused damages to the front corners on several ships.  To clarify the relations between the corner shape and stress distribution by the longitudinal bending of the ship, a study is made of eight types of corner shape by finite element method.  The results have shown that the maximum stress decreases by 40 percent on rounded corners from that on right-angled corner.  It is also found that the knuckle type corner with straight line is as effective as the rounded type in relieving stress. The availability of longitudinal and transverse brackets for right-angled structures and the relations between bracket size and the degree of stress relief are also investigated.]]></description>
      <pubDate>Wed, 13 Apr 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/67197</guid>
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    <item>
      <title>STRUCTURAL INTERACTION BETWEEN SHIP'S HULL AND SUPERSTRUCTURE</title>
      <link>https://trid.trb.org/View/44931</link>
      <description><![CDATA[The problem of interaction between ship's hull and superstructure is complicated by various non linear effects, such as shear lag in both hull and superstructure, deformation or slip in the connection between superstructure and upper deck and differential curvature between hull and superstructure due to the flexibility of the upper deck. These effects are not usually considered in conventional strength calculations.  This paper gives a method for calculating deflections and stresses in the hull and superstructure taking account of all various factors influencing the deckhouse and superstructure characteristics.  The problem is discussed in a general way and presented in simple stiffness concept form as the finite strip method being applied with certain assumptions.  The paper also includes a study on the object of superstructures and deckhouses effective breadth and efficiency and how it contributes to the longitudinal strength of ships.]]></description>
      <pubDate>Fri, 14 May 1976 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/44931</guid>
    </item>
    <item>
      <title>REDESIGNING THE DESIGN PROCESS: SUPERSTRUCTURES OF SHIPS</title>
      <link>https://trid.trb.org/View/39756</link>
      <description><![CDATA[This paper, prepared for the International Ship Environmental Design Conference, emphasizes the social system on board ships as a function not only of large scale trends in society and the shipping industry, but also of the fact that the social system exists within the limits given by the superstructure and accommodation.  By looking at a conventional superstructure one finds that the traditional shipboard organization is physically built into this.  If the traditional shipboard social organization is to be changed, the superstructure must be changed.  The paper stresses that the design process of today gives those who operate ships few opportunities to have a superstructure according to their needs.  At present, economic and technical criteria dominate the design process. If decisions are to be based on social criteria as well another design approach must be found.  The paper describes one alternative approach.]]></description>
      <pubDate>Tue, 29 Jul 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/39756</guid>
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