mechanical connections

{{Short description|Device for connecting rebars}}

Mechanical rebar connections, also known as mechanical splices or mechanical coupler, are used to join lengths of rebar together to transfer forces from one steel rebar to another.{{Cite journal| doi = 10.1016/j.istruc.2017.08.007| issn = 2352-0124| volume = 12| pages = 115–119| last1 = Bompa| first1 = D. V.| last2 = Elghazouli| first2 = A. Y.| title = Ductility considerations for mechanical reinforcement couplers| journal = Structures| accessdate = 2021-06-01| date = 2017-11-01| url = https://www.sciencedirect.com/science/article/pii/S2352012417300541| hdl = 10044/1/67670| hdl-access = free}}{{Cite web| title = Experimental Study of Offset Mechanical Lap Splice Behavior - ProQuest| website = ProQuest| accessdate = 2021-06-01| url = https://www.proquest.com/openview/3cc64d3c5d0caa047671b6149b292ee7/1?cbl=36963&pq-origsite=gscholar}}

File:Devoran-rebar-coupler.jpg

Mechanical couplers can be advantageous in comparison with conventional methods of lap splicing because of the requirement for less steel for overlapping. It is more effective in the seismic detailing to avoid reinforcement congestion problems.{{Cite journal| doi = 10.1016/j.engstruct.2016.06.041| issn = 0141-0296| volume = 124| pages = 507–520| last1 = Tazarv| first1 = Mostafa| last2 = Saiidi| first2 = M. Saiid| title = Seismic design of bridge columns incorporating mechanical bar splices in plastic hinge regions| journal = Engineering Structures| accessdate = 2021-06-01| date = 2016-10-01| url = https://www.sciencedirect.com/science/article/pii/S0141029616303121| url-access = subscription}}

The couplers are also used in pre-cast construction.{{Cite journal| last = Jansson| first = Peter O.| title = Evaluation of Grout-Filled Mechanical Splices for Precast Concrete Construction| accessdate = 2021-06-01| date = May 2008| url = https://trid.trb.org/view/875314}}