Experimental investigation of bolted stiffened end-plate and bolted flange-plate connections

Abstract

This paper describes the experimental performance of the bolted stiffened end-plate (BSEP) and bolted flange-plate (BFP) connections using European hot-rolled profiles and built-up profiles. Four connections are designed and constructed according to FEMA-350 and are performed under cyclic loading. The influence of using different member profiles (European profiles and built-up profiles) in both the BSEP and BFP connections are examined. The obtained test results, including failure modes, hysteretic curves, ultimate moment and rotation values and panel zone extensions were reported and the performance of different connections is compared. It was found out, based on the obtained test results, that using hot-rolled or builtup profiles in the connection does not affect its global behavior.

Analisis Numerik Sambungan Bolted Flange Plate (BFP) dengan Menggunakan Program ANSYS

“…Yilmaz dkk [8] melakukan analisis perbandingan sambungan extended end-plate (BSEP-01) dengan sambungan bolted flange plate (BFP-01) menggunakan profil baja eropa secara eksperimental. Detail konfigurasi spesimen sambungan dapat dilihat pada Gambar 3.…”

“…Hal ini dikarenakan tidak ada doubler plate atau ketebalan panel zone relatif tipis. Eksperimental yang dilakukan Yilmaz dkk [8] juga menunjukkan terjadinya pelelehan pada panel zone di akhir pengujian. Kapasitas momen dan rotasi yang dihasilkan oleh model numerik masing-masing sebesar 247,36 kN-m dan 4,83% dengan selisih antara model numerik dan eksperimental sebesar 4,05%.…”

Cyclic Testing of Bolt-Weld Joints Reinforced by Sleeves Connecting Circular CFST Columns to Steel Beams

“…However, it also has a more complex connection with a steel beam than a square CFST column; this has limited the use of circular CFST columns; thus, they have relatively fewer joint forms. Seismic behavior tests of the core bolt and stiffened end-plate joints of square CFST columns and steel beams [9][10][11][12] have shown that these joints have excellent overall seismic performance, but the core bolts easily loosen under seismic loads and are prone to brittle failure when suddenly overloaded. Other studies [13][14][15][16][17][18] have shown that, because of the complex stress state of the bolt and steel tube when a similar joint is used for circular CFST columns and steel beams in seismic tests, the bolt breakage, pull-out, buckling, and tearing of the column wall easily occur under repeated seismic loads; this affects the restraint of the steel tube on concrete in the joint core area.…”