Aug 31, 2025
Protective Bidding Part II IN the last issue I started looking at protective bidding, which is effectively ''defensive bidding'' that occurs in the pass-out seat when you have a decision to make: do you let the
Jun 22, 2026
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Nov 08, 2025
Its performance for protecting bridge piers under vehicle collisions has not been investigated so far. This paper aims to develop a novel protective device with controllable damage
May 10, 2026
Timber struf frame bridges are deck bridges, the individual span width of which is reduced by oblique supports. The supporting structure is situated under a water
Dec 21, 2025
With the rapid development of urban rail transit networks, constructing shield tunnels often requires passing underneath existing buildings,
Nov 30, 2025
This paper aims to develop a novel protective device with controllable damage zones that can be installed on highway bridges or city viaducts for protecting pier columns from vehicle collisions.
Mar 14, 2026
This type of bridge design, which includes various forms like braced and V-leg rigid-frame bridges, offers significant structural benefits for medium-span lengths but involves more complex design and
Jan 09, 2026
A protective cover is a temporary structure used to control and contain debris from bridge removal operations. Protective covers can be used to control debris from falling vertically or projected laterally
May 05, 2026
At certain locations along the bridge span, a continuous U-shaped frame is formed from the horizontal deck beams and vertical elements in the main girders – usually full depth stifeners welded to the web.
May 18, 2026
Pi shaped rigid frame structures are used frequently as the piers and supports for inner-city highways. The frame supports the raised highway and at the same
Aug 29, 2025
SafetyRespect saves lives with fall protection installed on several bridges being built around Europe and North America. Our flexible attachment
May 22, 2026
A rigid frame is defined as a structural system in which the superstructure and substructure are rigidly connected to act as a unit, allowing for efficient load transfer through bending moments, axial forces,
Jan 02, 2026
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Apr 20, 2026
Bridge and Pier Protective Systems and Devices KENNETH N. DERUCHER AND CONRAD P. HEINS The design of tendering systems, which protect bridge piers against ship im· pact (or at least retard
Dec 18, 2025
It quickly became very popular among Second World War pilots, which contributed to the success of double-bridge frames worn today. The
Jan 21, 2026
When using HSS sections, the members are break out in vertical thin plate strips. However, you cannot place HSS reinforcement in those stips. The workaround is to use a hollow section polygon under the
Aug 28, 2025
The collisions between bridges and ships might cause severe damage to both of them, which is impossible to avoid completely, although several specifications or requirements need to be
Jan 17, 2026
For bridge replacement or bridge rehabilitation projects that are not part of a highway project, the lanes and shoulders to be carried across the bridge shall be determined in accordance with Table 2-1.
Feb 24, 2026
Frame bridges are often the most economical solution for smaller spans. Orthogonal and trapezoidal frames are particularly suitable for grade separations (flyovers, underpasses – modest structures in
Feb 06, 2026
Designers continue to refresh the double-bridge look each season, introducing new color finishes or mixing traditional metals with updated acetate
Jun 09, 2026
Protective Bidding Part I WHY DO so many experienced players play more hands than their less experienced counterparts? And why do they always seem to defend 3TM going down when
Oct 29, 2025
The “fit” or “fit condition” of an I-girder bridge refers to the deflected girder geometry associated with a specific load condition in which the cross-frames or diaphragms are detailed to
May 13, 2026
The revisions to this 2nd Edition of the AASHTO Construction Handbook for Bridge Temporary Works have been primarily editorial and organizational. The tables and references were updated and the
Jul 03, 2026
Examples are cable-stayed bridges, segmental bridges, long-span box girder bridges, and arch bridges. Designing these types of structures often requires specific expertise.
Oct 22, 2025
In Western China, a large number of bridges are located in debris flow gullies and are exposed to a great risk of damage in case of a geological disaster. To ensure the safety of the bridge
Feb 25, 2026
For a simple framing system like the bridge at hand, dead and live cross-frame forces are typically considered small enough to ignore in design (hence the minimum design requirements outlined
Nov 24, 2025
1.1 Purpose This Bridge Manual has been prepared to provide policies and procedures required for bridge project development and bridge design for the New York State Department of Transportation
Jun 23, 2026
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