Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

To fulfill the requirements of traffic on Indian railways it has become necessary to run the vehicle with high speed and heavier loads. With the increase in speed and load of trains the tractive and braking forces on rails will also increase. Consequently, it has become important to investigate the safety of sub-structures of existing bridges. Hence the share of force resisted by individual sub-structural elements should be estimated more accurately than given by the present specifications which are based on a few field trials, and are not realistic and reliable. The problem is studied in two parts. First is to investigate how the longitudinal forces developed over a bridge are shared by various supports and approaches. Secondly to ascertain if a particular support is capable of sustaining the loads determined above. This paper deals mainly with the first part of the problem, to develop a rational analysis for working out dispersion of longitudinal forces, and compare the values with the existing codal provisions which are based on the field tests. The constants and the factor affecting them are also given importance. Their ranges required for analysis purpose is also mentioned. 1.A fairly simple, reliable and universally applicable theoretical analysis using matrix method has been developed for working out dispersion of tractive and breaking forces of bridge substructure. 2. The constants required for the analysis such as approach constant, rail girder fixture constant and the support constants are given with their limiting range. 3. The analysis takes into account the effect of any number of axles exerting vertical loads and longitudinal forces. 4. The longitudinal forces on piers due to vertical loads are not as large as on abutments. These longitudinal forces are not being considered in design at present but the theory indicates that they should be given due consideration. 5. The maximum longitudinal force going to a support can be reduced by providing suitable rubber or neoprene bearings.

Important Note..!

If you are not satisfied with above reply ,..Please


So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Popular Searches: bridge failure, track bridge interaction model, track design, infini bridge, disadvantages of carey fosters bridge, interaction overview diagram for reservation system, bridge abstract,

Quick Reply
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  suspension bridge presentation seminar presentation 3 6,320 16-10-2012, 12:35 PM
Last Post: seminar details
  Seismic Analysis Of Structures (Bridges) Including Soil-Structure Interaction Effect electronics seminars 1 3,094 08-04-2011, 03:20 PM
Last Post: project topics
  SEISMIC ANALYSIS OF THE CABLE-STAYED BRIDGE full report project topics 0 1,530 08-04-2011, 03:19 PM
Last Post: project topics
  Segmental Bridge Construction seminar class 0 3,160 08-03-2011, 04:32 PM
Last Post: seminar class
  THE TACOMA BRIDGE FAILURE full report project report tiger 4 3,635 31-12-2010, 10:57 AM
Last Post: seminar surveyer
  Behavior of instrumented prestressed high performance concrete bridge girders Wifi 0 986 08-10-2010, 06:02 PM
Last Post: Wifi
Last Post: project report helper
  Track Bridge Interaction computer science crazy 0 1,017 07-04-2009, 10:54 PM
Last Post: computer science crazy