SAP2000 Truss Bridge Bracing

[zurlcorn]

Want To Ask
i have proble when trying to alanyze bottom bracing for truss bridge, when im trying to draw like autocad the value doesn't relevant, so i draw on SAP2000 with half draw of bottom bracing and the value is correct
i will put the picture bellow
Thanks in advance

 

[Lomarandil]

Lateral x-bracing in many truss bridges is detailed and intended to act as tension bracing. While the other half of the X may i initially attract some compression, it quickly elastically buckles and becomes ineffective (until the lateral load is removed).

I haven't used SAP for a long time -- it may have a "tension only" member option, or you may choose to manually omit some of the bracing as shown.

 

[zurlcorn]

Lateral x-bracing in many truss bridges is detailed and intended to act as tension bracing. While the other half of the X may i initially attract some compression, it quickly elastically buckles and becomes ineffective (until the lateral load is removed).

I haven't used SAP for a long time -- it may have a "tension only" member option, or you may choose to manually omit some of the bracing as shown.

thanks for your reply
can we start the conversation?
it will help me a lot

 

[CSIESPL INDIA]

Want To Ask
i have proble when trying to alanyze bottom bracing for truss bridge, when im trying to draw like autocad the value doesn't relevant, so i draw on SAP2000 with half draw of bottom bracing and the value is correct
i will put the picture bellow
Thanks in advance

If you draw only half of the bracing system in SAP2000, make sure you are properly accounting for symmetry. In structural analysis software like SAP2000, you can sometimes model only half of the structure if it is symmetrical, and the software will apply the loads accordingly to both halves.