Jaya 's Activities

Lifting of prestressed girders

Jaya — Sat, 29 Jan 2022 05:21:12 GMT

Can LeapBridge analyze the stress limiting during erection?

For instance, the force F1 is different from F2, which may cause torsion.

Many thanks,

Jaya

Check at lifting point for open box girder

Jaya — Sat, 29 Jan 2022 23:17:13 GMT

Hi,

Can I ask where is the lifting points for open box girder if 1 ft is selected? It looks like the 1 ft is for longitudinal direction. How about the transverse direction? Unlike I girder, two lifting points are usually used for the open box girder.

Many thanks,

Jaya

Ask A Question II

Sat, 29 Jan 2022 05:22:46 GMT

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Specify transverse location of live load to see its influence on superstructure

Jaya — Wed, 19 Jan 2022 21:43:21 GMT

I placed the default live loads to check the moments of a symmetric superstructure (below).

It looks like LeapBridge provided the all combined results; thus, the moments for the two exterior girders are symmetric.

Can I ask how to specify the transverse location of live load? For instance, how can I place the live load at the very left lane to check the different moments at left girder and right girder?

0.7 in. prestressing tendon

Jaya — Wed, 26 Jan 2022 21:42:00 GMT

Hi,

I can't find 0.7" for the prestressing tendon, can I manually add it?

Many thanks,

Jaya

Torsion design for superstructure

Jaya — Wed, 26 Jan 2022 22:11:15 GMT

Is torsion design for prestressed superstructure available using leapbridge concrete connect edition?

Many thanks,

Jaya

Post-Tensioning of AASHTO I Girder Type LEAP Bridge Concrete

Ave Robin Ramos — Sat, 24 Jun 2017 07:02:19 GMT

June 24, 2017

Dear Engineers,

Greetings for all structural engineers in the world.

I'm a bridge engineer from the Philippines and currently connected in a consulting firm. I'm using Leap Bridge Concrete for less than a month and find out that it's a very powerful bridge software. I'm wondering if there is a post-tensioning option for AASHTO I Girder in the latest Leap Bridge Concrete v17. Can you help me in finding a solution?

Thank you.

Regards,

Ave Robin Ramos

How does LeapBridge design/consider the connections for continuous bridge?

Jaya — Sun, 16 Jan 2022 22:50:59 GMT

I selected "Multi-Span (Continuous)" as the span type. Can I ask if I can design the connections for the continuous bridge? If not, how does LeapBridge design/consider the connections for the continuous bridge?

Many thanks,

Jun

LLDF for exterior girders for precast concrete I-girder bridges in ConSpan

Daniel Broekhuizen — Tue, 05 Mar 2019 16:24:37 GMT

I have a question in how LLDF are calculated for positive moment for the case of 2 or more lanes loaded for exterior girders in a typical I-girder bridge with cast-in-place deck. (case k of AASHTO LRFD Table 4.6.2.2.1-1).

For my case with a beam spacing of 6.24', the program calculated a LLDF for the interior girder of 0.52 for the case of 2 or more lanes loaded. Using Table 4.6.2.2.2b--1, I was able to duplicate that result.

For the exterior girder, I figured that ConSpan would use Table 4.6.2.2.2d-1, and multiply the interior girder LLDF by the value of "e" copied below from AASHTO to get the LLDF for the exterior girder.

I have a barrier width of 1.21' and a distance from the edge of deck to the centerline of the exterior girder web of 2.5'. To me, that means that e = 0.77+(2.5-1.21)/9.1 = 0.91

The LLDF for the exterior girder for 2+ lanes loaded would then be 0.91*0.52 = 0.47. However, ConSpan is giving me a value of 0.60. What am I missing?

Cap design

Jaya — Mon, 17 Jan 2022 23:57:01 GMT

Can I ask the difference between "centerline of column", "face of support", and "offset from CL of the column", shown below?

Many thanks,

Jaya

How to adjust span length

Jaya — Sun, 28 Nov 2021 21:15:29 GMT

I created an bridge file.

How can I adjust the span length?

Thanks,

Jun

Section drawing for new design

Jaya — Mon, 01 Nov 2021 04:06:22 GMT

I am using LEAP Bridge Concrete CONNECT Edition (Version 16.02.00.01) to design Open Box Beam.

How can I add new dimensions (e.g., "a" and "b" as shown below)?

Strand template

Jaya — Wed, 03 Nov 2021 06:52:26 GMT

How can I add a strand at the red location shown as below (in between two default black dots)?

Ask A Question I

Mon, 01 Nov 2021 04:07:37 GMT

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