４．非線形力学 孔あき鋼板ジベルのせん断強度試験に関する一考察

Abstract

In order to obtain slip strength of perforated rib shear connector (PBL), a lot of tests have been conducted by push-out test, of which method is basically same as “Method of push-out tests for studs with heads” by Japan Society of Steel Construction (JSSC). However, is the method of JSSC applicable to the test for PBL which is usually collapsed by concrete crack, different from stud collapse mode caused by stud failure? This paper, by conducting push-out tests and pull-out tests of PBL, investigates applicability of push-out test method. Tests results show far different slip behaviors and strengths between push-out and pull-out tests, though the slip mechanism of PBL is intrinsically identical in terms of slipping of concrete in a hole by slip force. Since the difference of slip strength according to test method must have depended on concrete confinements caused by factors such as concrete covering, concrete block size, reinforcementhrough a hole, etc., these confinement effects should be taken into account correctly to evaluate slip strength of PBL.