Limit Analysis of Reinforced Concrete Arch Bridges

1979 ◽  
Vol 105 (2) ◽  
pp. 313-326 ◽  
Author(s):  
Paola Ronca ◽  
M. Z. Cohn
Keyword(s):  
Reinforced Concrete ◽  
Limit Analysis ◽  
Arch Bridges

scholarly journals Transverse prestressing and reinforced concrete as the key to restoration of masonry arch bridges

2021 ◽  
Vol 245 ◽  
pp. 112898
Author(s):  
Ladislav Klusáček ◽  
Radim Nečas ◽  
Michal Požár ◽  
Robin Pěkník ◽  
Adam Svoboda
Keyword(s):  
Reinforced Concrete ◽  
Masonry Arch ◽  
Arch Bridges

Three-dimensional adaptive limit analysis of masonry arch bridges interacting with the backfill

2021 ◽  
Vol 248 ◽  
pp. 113189
Author(s):  
Tommaso Papa ◽  
Nicola Grillanda ◽  
Gabriele Milani
Keyword(s):  
Limit Analysis ◽  
Three Dimensional ◽  
Masonry Arch ◽  
Arch Bridges

Reinforced concrete and masonry arch bridges in seismic areas: typical deficiencies and retrofitting strategies

2020 ◽  
pp. 3-30
Author(s):  
Claudio Modena ◽  
Giovanni Tecchio ◽  
Carlo Pellegrino ◽  
Francesca da Porto ◽  
Marco Donà ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Masonry Arch ◽  
Arch Bridges

scholarly journals Influence of Multiple-Support Excitation on Seismic Response of Reinforced Concrete Arch Bridges

2019 ◽  
Vol 10 (1) ◽  
pp. 17 ◽  
Author(s):  
Marta Savor Novak ◽  
Damir Lazarevic ◽  
Josip Atalic ◽  
Mario Uros
Keyword(s):  
Reinforced Concrete ◽  
Spatial Variation ◽  
Seismic Response ◽  
Ground Motion ◽  
Seismic Analysis ◽  
Numerical Study ◽  
Relative Significance ◽  
Multiple Support ◽  
Arch Bridges ◽  
Support Excitation

Although post-earthquake observations identified spatial variation of ground motion (i.e., multiple-support excitation) as a frequent cause of the unfavorable response of long-span bridges, this phenomenon is often not taken into account in seismic design to simplify the calculation procedure. This study investigates the influence of multiple-support excitation accounting for coherency loss and wave-passage effects on the seismic response of reinforced concrete deck arch bridges of long spans founded on rock sites. Parametric numerical study was conducted using the time-history method, the response spectrum method, and a simplified procedure according to the European seismic standards. Results showed that multiple-support excitation had a detrimental influence on response of almost all analyzed bridges regardless of considered arch span. Both considered spatial variation effects, acting separately or simultaneously, proved to be very important, with their relative significance depending on the response values and arch locations analyzed and seismic records used. Therefore, it is suggested that all spatially variable ground-motion effects are taken into account in seismic analysis of similar bridges.

scholarly journals Safety Assessment of Masonry Arch Bridges Considering the Fracturing Benefit

2020 ◽  
Vol 10 (10) ◽  
pp. 3490 ◽  
Author(s):  
Federico Accornero ◽  
Giuseppe Lacidogna
Keyword(s):  
Fracture Mechanics ◽  
Bearing Capacity ◽  
Limit Analysis ◽  
Life Assessment ◽  
Plastic Limit ◽  
Masonry Arch ◽  
Fracturing Process ◽  
Plastic Limit Analysis ◽  
Elastic Fracture ◽  
Arch Bridges

The evolutionary analysis of the fracturing process is an effective tool to assess of the structural bearing capacity of masonry arch bridges. Despite their plain basic assumptions, it must be remarked that elastic analysis and plastic or limit analysis can hardly be used to describe the response and predict damage for moderate or service load levels in masonry arch bridges. Therefore, a fracture mechanics-based analytical method with elastic-softening regime for masonry is suitable in order to study the global structural behaviour of arch bridges, highlighting how the arch thrust line is affected by crack formation, and the maximum admissible load evaluated by means of linear elastic fracture mechanics is larger than the load predicted by elasticity theory. Such an increment in terms of bearing capacity of the arch bridge can be defined “fracturing benefit”, and it is analogous to the “plastic benefit” of the plastic limit analysis. The fracturing process, which takes into account the fracture initiation and propagation in the masonry arch bulk, occurs before the set-in of the conditions established by means of the plastic limit analysis. In the present paper, the study of the elastic-fracture-plastic transitions is performed for three monumental masonry arch bridges with different shallowness and slenderness ratios. This application returns an accurate and effective whole service life assessment of masonry arch bridges, and more in general it can be suitable for a great number of historical masonry structures still having strategic or heritage importance in the infrastructure systems.

Evaluation of the vertical load capacity of masonry arch bridges strengthened with FRCM or SFRM by limit analysis

2020 ◽  
Vol 225 ◽  
pp. 111135
Author(s):  
Paolo Zampieri ◽  
Nicolò Simoncello ◽  
Jaime Gonzalez-Libreros ◽  
Carlo Pellegrino
Keyword(s):  
Limit Analysis ◽  
Load Capacity ◽  
Vertical Load ◽  
Masonry Arch ◽  
Arch Bridges

Limit analysis of reinforced concrete cylindrical shell roofs

1980 ◽  
Vol 15 (4) ◽  
pp. 223-234
Author(s):  
K. Surayya ◽  
S.R. Saiadidam
Keyword(s):  
Cylindrical Shell ◽  
Reinforced Concrete ◽  
Limit Analysis
Sign in / Sign up

Export Citation Format

Share Document