http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Jagdish R. Dhanuskar (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Shear Lag Effect in Welded Single Angle Tension Member
Jagdish R. Dhanuskar,Laxmikant M. Gupta 한국강구조학회 2021 International Journal of Steel Structures Vol.21 No.3
The typical failure of a welded single angle tension member is a gross section failure. The rupture strength of the single angle tension member is aff ected by the eff ect of shear lag. Full-scale tests on twenty-seven single angle specimens reported in this paper. Four diff erent angle sections with four diff erent section types were used in the test. The test parameter includes the steel’s grade, length of the connection, the eccentricity of the connection, and balanced and unbalanced weld arrangement. Twenty-three specimens failed by fracture of the gross section area, one failed in mixed mode (angle tear and the weld failure), and the remaining three failed in the weld. To interpret the experimental results, fi nite element analysis was performed on the specimen’s model. The fi nite element model well represents the welded single-angle tension member’s behaviour, and fi nite element results show exemplary test results. The ultimate strengths of the test specimens were also evaluated by using the current design standards (IS 800, AISC, CSA, AS 4100, and EC-3), the (1− x̅/L) rule, and Kulak and Wu’s equation. In general, IS 800 provides a good prediction of test results, AISC and AS 4100 provide a slightly conservative forecast; however, CSA and EC-3 provide a slightly un-conservative prediction. For a balanced weld arrangement, the specimen’s ultimate strength increased with an increase in connection length; however, an increase in connection length does not increase the specimen’s ultimate strength for an unbalanced weld arrangement. The angle specimen’s effi ciency decreased signifi cantly with an increase in eccentricity. The rupture strength predicted by assuming the ultimate strength of the connected leg and the strength contributed by the outstanding leg at the critical section shows a good prediction of the strength over the (1− x̅/L) rule.
-
Experimental Investigation of Block Shear Failure in a Single Angle Tension Member
Jagdish R. Dhanuskar,Laxmikant M. Gupta 한국강구조학회 2020 International Journal of Steel Structures Vol.20 No.5
A limited test data are available for double-bolt line connection in a single angle tension member, which failed in block shear. To address this, twelve single angle tension members with a double bolt-line connection was reported in this paper, considering the block aspect ratio and connection length as the test parameters. All the tested specimens were failed in block shear. For the tested specimens, numerical analysis was performed, which shows good agreement with experimental results. Experimental outcomes were then compared with the current design provisions present in the IS 800, AISC, CSA, AIJ, EC 3, SBC, and with other existing proposed models. These standards and models show some discrepancies with regard to the experimental results. This discrepancy was due to the shear failure plane position as assumed in the design standards. Those shear planes were specifi ed in the standards as net and gross shear planes. However, the experimental and numerical investigation shows that between the gross shear plane and the net shear plane lies the actual shear failure plane. Based on this, the block shear mechanism was modifi ed and proposed a rational equation that provides a more exact prediction of block shear capacity than the current design standards and the other existing models. The proposed block shear equation shows the precise forecast for both single and double-bolt line connections used in a single angle tension member.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
