Influence of truss-type and welded reinforcement in concrete beam Online publication date: Thu, 07-Apr-2022
by H.M.A. Mahzuz; Mushtaq Ahmed; Md. Maksudul Islam; Rashadul Hasan; Kamrul Hasan; Md. Meftahul Alam
International Journal of Structural Engineering (IJSTRUCTE), Vol. 12, No. 2, 2022
Abstract: In present study, the shear strength of the conventional reinforced concrete beam (here named as non-welded rectangular stirrup beam - NRSB) is compared with three types of beam having modified reinforcement patterns, named as welded rectangular stirrup beam (WRSB), non-welded Warren truss beam (NWTB) and welded Warren truss beam (WWTB). Such names are given based on the stirrup orientation. All beams have the same concrete dimension and the same total weight of reinforcement, ensuring no variation of cost. From the test results, the average shear strength enhancement of WRSB, NWTB, and WWTB was found to be more than 17%, 10%, and 30% compared with conventional NRSB. WWTB was proposed to be the best alternative. To design the above-mentioned beams, design equations are proposed and verified. Use of finite elemental software reveals that in reinforcement the stress intensity (Von-mises) is the maximum in WWTB, followed by WRSB, NWTB and finally NRSB.
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