SkyCiv Bolted Splice Connection Calculator

The calculator covers splices between I-shaped members joined by bolted flange plates and a web plate. It returns the maximum moment capacity, the maximum shear capacity and the maximum axial capacity of the joint, each one as a capacity and a utility ratio, checked to AISC 360-16 nell'ASD o LRFD.

The numbers come from what you enter: the depths, widths and thicknesses of the splice plates and flange plates, the steel properties of the section and the plates, the section dimensions, and the design loads at the splice.

A bolted splice joins two structural members end to end so that force passes from one into the other. The members usually have an I-shaped cross-section, and the joint is made with a plate on each flange and a plate on the web, all bolted rather than welded.

Bolted splices are strong, they tolerate some fit-up variation, and they can be taken apart again. That combination is why they are a popular choice for flange and web splices made in the field.

A bolted splice is built from four parts:

• Piastre flangiate: a plate on the top flange and one on the bottom flange, carrying bending moment across the joint.
• Web plate: bolted to the web on each side of the joint to carry shear.
• bulloni: the fasteners clamping every plate to the two members.
• The two members: the I-sections either side of the splice, whose dimensions and steel grade set what the joint has to match.

Together the plates and bolts connect the two members so they behave as one.

Bolted splices turn up wherever two members have to join and the connection has to be strong:

• Equipment support structures.
• Industrial frames.
• Pipe racks.
• Railway, automotive and mechanical structures.
• Mining and power transmission structures.

Bolted splices are not limited to those. The detail suits anywhere two members have to join and act as a single member.

The alternative is a welded splice. The choice comes down to where the work happens: bolted splicing is normally used when members are joined during erection, and a joint made in the shop instead can be welded.

So the question to settle early is whether the splice is a field joint or a shop joint. That decides the detail before any of the plate sizing starts.

Enter the geometry, the materials and the design actions at the splice. Gli input sono:

• Section steel: yield and ultimate strength.
• Section geometry: the dimensions of the I-section.
• Splice plate steel: yield and ultimate strength.
• Piastra flangiata: profondità, width and thickness.
• Web plate: profondità, width and thickness.
• bulloni: the bolts used and the bolt configuration.
• Carichi di progettazione: momento, tagliante e assiale.

Click run and the calculator works through the checks. Results come back as both utility ratios and capacities, and the report carries the detailed calculations behind them.

Every check is reported as a capacity alongside a utility ratio, so an overloaded plate or bolt group shows up without reading the whole report. The calculations are set out in full rather than returned as a single verdict, and the tool runs in the browser with nothing to install.

The full SkyCiv Connection Design module picks up where the free tool stops: terminato 80+ pre-configured connection types, detailing and clash checks run before the solve, CloudCAD detail drawings, and export of the 3D connection geometry directly to IFC.

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