Abstract:
The technical standard system of high speed railway (HSR) infrastructure ought
to cover the full life cycle of the infrastructure, including the standards of
design, acceptance and operation. For long-span bridges, environmental factors
like wind, temperature, creep, settlement which have a marked influence on
structural performance should be taken into consideration in design and
operation. Various loads are in adverse situation in the stage of design, and
it is required that structures should meet strength demand in combined action,
while deformation limits are prescribed in accordance with various loads, and
the stiffness requirements of the structure are not put forward. Therefore,
the design standards cannot be adopted directly in the operation stage of the
structure. The paper carries out a comparative study on the adaptation of
radius of curvature, wave length amplitude and chord length to the deformation
control of long-span bridges, and proposes the analysis process of health
monitoring index limit by taking a deck arch bridge as example, which can be
used in static deformation control in operation stage for different bridge
types and spans.
Key
words: high speed railway (HSR); long-span bridge; health monitoring; static
deformation limit; train-bridge coupling
Source: Chinese Railways No.1 2019 Serial No.52
