Ziquan Dai

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Questions related from Ziquan Dai

How do we do prestressed concrete beam in LS Dyna with proper initial stress and strain in the precast portion of the concrete beam?

I am facing a problem with the simulation of the precast concrete beam with prestressing. Typically, a precast beam would be fabricated in the factory with prestressing tendons (precambering) to...

07 February 2024 1,098 1 View

How come the principal stresses in the concrete elements are still high when the compressive damage have all reached 0.98?

I have been trying to model grouted sleeve connections in offshore industry using concrete damage plasticity model. I could match the FEA with test results in terms of load-displacement curve up...

08 June 2018 7,251 2 View

How do I find the initial stiffness of a steel beam-column joint from the M-rotation curve. Papers usually don't show how to obtain the values?

I currently have the moment-rotation curve from several experiments. But I could not find the guidance in Eurocode on how to get the rotational stiffness from the experimental M-rotation curve?...

26 October 2016 3,821 5 View

How to design a welded tubular beam-column joint?

I found no such guidance in the Eurocode 3 Part 1-8. There are equations for truss design. Thus no moment resistance is considered. Is it that I can only use FEM to do so? What if I switch the...

11 August 2016 4,954 3 View