UKNationalAnnextoEurocode1: Actionsonstructures-
Part 2: Traffic loads on bridges
Publishing and copyright information
The BSI copyright notice displayedin this dcument indicates when the document was last isued.
C The British Standards Institution 2020
Published by BSI Standards Limited 2020
ISBN 978 0 580 04401 0
ICS 91.010.30; 93.040
Publication history
First published May 2008
Amendments issued since publication
Amd. no. Date Text affectedCor 1 May 2008 "Timber° removed from titleAmd 1 June 2020 Indicated by tags E
Contents
IntroductionNA.1 Scope 1NA.2 Nationally determined parameters 2Table NA.1 Adjustment factors do and α for Lood Model 1 Figure NA.1 Basic longitudinal configuration of SV model vehicles 3 4Figure NA.2 Basic longitudinal configuration of SOV model vehicles 6Figure NA.3 Lateral wheel arrangement for trailer axles of all SOV models Tabie NA.2 Dynamic Amplification Factors for the SV and SOV vehicles 7 7Figure NA.4 Typical application ofSV or SOV and Load Model 1 looding when the SV or SOVFigure NA.5 Typical application ofSV or SOV and Load Model 1 looding when the SV or SOV vehicle lies fully within α notional lone 8vehicle straddles two adjacent lanes 9Table NA.3 Assessment of groups of traffic loods characteristic values of theTable NA.4 Indicative numbers of hecvy goods vehicles expected per year and per lane in the muiti-ponent action) 11United Kingdom 12Table NA.6 Forces due to colision with vehicle restraint systems for determining global effects Table NA.5 Set of equivalent lorries for Fatigue Load Model 4 14 15Figure NA.6 Vehicle model for abutments and wing walls 16Table NA.7 Remended crowd densities for design Figure NA.7 Effective span calculation 20 19Table NA.8 Parometers to be used in the calculotion of pedestrian response 20Figure NA.8 Relationships between k(f.) and mode frequencies f 21Figure NA.9 Reduction factor y to allow for the unsynchronized binotion of pedestrion actions within groups and crowds 22Table NA.9 Remended values for the site usoge foctork 24Table NA.10 Remended volues for the route redundancy factor kz Table NA.11 Remended volues for the structure height factor k3 24 24Figure NA.10 Response modifiers 24Figure NA.11 Lateral lock-in stability boundories Tabie NA.12 Nominai longitudinal loads 26 27Figure NA.12 RL Loading 28Tabie NA.13 Nominal longitudinal loads (RL loading) 30Table NA.14 Standard lood spectro for RL looding Table NA.15 RL loading: Annual traffic tonnage and position of standard traffic mix 31 31Figure NA.13 Trains included in Table NA.14 spectra 32Figure NA.14 Flow chart for determining whether a dynamic analysis is necessary for *simple* structures 34Figure NA.15 Flow chart for determining whether α dynamic analysis is required for simple° andFigure NA.16 Limits of bridge natural frequency ng in Hz as a function ofL in m “plex” structures 35 36Figure NA.17 Coordinate system 40Figure NA.18 Pressure distributions on a vertical structure next to the track 41Figure NA.19 Pressure distributions on a horizontal structure above the track 42
Figure NA.20 Pressure loads on α horizontal structure adjacent to the track 44Figure NA.21 Pressure distributions on α multi-surface structure next to the track 45NA.3 Decision on the status of informative annexes 47NA4 References to non-contradictory plementary information 48Bibliography 49
Summary of pages
NationalAnnex(informative)toBSEN1991-2:2003 Eurocode1:Actionsonstructures-Part 2:Trafficloads onbridges
Introduction
This document has been prepared by BSI Submittees B/525/1 Actions (loodings) and basis ofdesign and B/525/10 Bridges. In the UK it is to be used in conjunction with BS EN 1991-2:2003.
NA.1 Scope
This document gives:
a] the UK decisions for the Nationally Determined Parameters described in the followingsubclauses of BS EN 1991-2:2003:
2.2 (2) Note 2 1.1 (3) 6.5.4.3 (2) Notes 1 and 2 6.5.4.1 (5) 2.3 (1) Note and (4) Note 6.5.4.4 (2) Note 13 (5) 6.5.4.54.1 (1) Note 2 and (2) Note 1 4.2.1 (1) Note 2 and (2) 6.5.4.5.1 (2)4.2.3 (1) 4.7.3.4 (1) 4.7.3.3 (1) Notes 1 and 3 and (2)4.3.1 (2)(b) Note 2 4.8 (1) Note 2 and (3) 4.3.2 (3) Notes 1 and 2 and (6) 4.9.1 (1) Note 14.3.4 [1) 4.3.3 (2) and (4) 5.2.3 (2) 5.3.2.1 (1)4.4.1 (2). (3) and (6) 5.3.2.2 (1)4.4.2 (4) 5.3.2.3 (1) Note 1 4.5.1 (Table 4.4a Notes a and b) 5.4 (2)4.6.1 (2) Note 2c). (3) Note 1 and (6) 4.5.2 (1) Note 3 5.6.2.1 (1) 5.6.1 (1)4.6.4 (3) 5.6.2.2 (1)4.6.5 (1) Note 2 5.6.3 (2) Note 2 4.6.6 (1) 5.7 (3)4.7.2.2 (1) Note 1 4.7.2.1 (1) 6.3.2 (3)P 6.1 (2). (3)P and (7) 6.4.6.1.1 (6) Table 6.4 and (7) 6.3.3 (4)P 6.4.6.1.2 (3) Table 6.5 6.4.4 (1) 6.4.6.3.1 (3) Table 6.6 6.4.5.2 (3)P 6.4.6.3.3 (3) Notes 1 and 2 6.4.6.3.2 (3) 6.5.4.6 6.4.5.3 (1) Table 6.2 6.4.6.4 (4) and (5) 6.5.4.6.1 (1) and (4) 6.5.1 (2) 6.6.1 (3) 6.5.3 (5) and (9) 6.7.1 (2)P and (8)
