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1 vote

Can Friction Pendulum Bearing/System (FPB/FPS) suppresses the effect of an earthquake from every direction or only from one direction?

Here's an article about triple-PDB systems which has some nice diagrams of each level within the system. From one of the pictures, it seems clear that the circumferential symmetry means a PDB ...
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3 votes

Why is this bridge thickest above the support pillars instead of the mid-span where the bending stress is highest?

Spreading the upward reaction load from the support pillars is one reason, the function of an arch translating vertical load to horizontal thrust is another. But there are already good answers saying ...
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29 votes
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Why is this bridge thickest above the support pillars instead of the mid-span where the bending stress is highest?

If I model this as a simply supported beam having load at mid span [...] I suspect that this is where your analysis went awry. First off, you should always model bridges with distributed loads, not a ...
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7 votes

Why is this bridge thickest above the support pillars instead of the mid-span where the bending stress is highest?

Since this bridge is crossing over a waterway, besides aesthetics, the arch-shaped bridge provides several advantages: Less restrictive over the height of marine traffic due to more headroom in the ...
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2 votes

Why is this bridge thickest above the support pillars instead of the mid-span where the bending stress is highest?

Simply put, it is because the mass of the spans has to be supported and each pillar has to support 1/2 the mid span plus some of the end section.
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