Recent content by jiao

I am designing a composite concrete bridge deck slab supported on plate girders by FEM. My question is: The output shear being a contour map,design for the peak value is apparently too conservative. How much wide of a strip of the slab should I take the average for design? Thanks

Where can I find more info about burrard couplers? Thanks,

I heard that Class C HSS might undergo some cracking when galvanized. Any published literature on this topic? thanks

Anyone shed some light on this matter? Thanks

In applying Canadian bridge code to the design of a retaining wall, there is a clause 6.9.3 on compaction surcharge. Are we supposed to consider this surcharge during construction stage only? or construction and service stages? Thanks

What I am about to do is the preliminary design of a section of highway that passse through weak soil.

I am doing an investigation on piled slab that will be used to carry roadway embankment through weak soil. Can anybody shed some light on this topic?

In this problem, apparently the prestressing force at both ends is not self-equilibrated. There should be some reactions at the supports under this prestressing load case only. Sap gives 0 reaction. I think this is a bug.

Is there any way I can calculate the shear+bending deformation together when a lateral force is not acting on the shear centre of the section (there should be torsion automatically)? assumng the default point of load is at centre of gravity. Thanks

How do I synchronize two windows, one showing deformation and the other showing bending moment diagram, of the same push-over step? Sap 2000 has the ability, as per Habibullah. Thanks in advance.

Anyone has experience analysing time history of a system subject to initial displacement/velocity using sap2000n? Give me some hints, please.

Did anyone use Sap2000n to model a tension only frme?

In steady-state dynamic analysis, there is a deformation response factor Rd which is defined as ratio of amplitude to static deformation;and Ra , ratio of amplitude of acceleration to acceleration due to force p0 acting on mass m. My question is : is there any physical explanation for Rv? Thanks

Anyone knows why I cannot do 3-D analysis on my StaadPro2001? Thanks

Thank you, Doug. I got it.