[1]
13
T1-2
74.82
45.28
0.61
26
L6
156.40
108.68
0.69
To verify the application of the above formula on broad-limb special-shaped columns, the test results of 24 broad-limb special-shaped columns in this paper and 2 in literature [1] are used, in which the tested value uses the limit load value with the larger value of pros and cons directions. The specimen in literature [1] is with a height of 1400mm, a limb thickness of 100mm, reciprocating loading test method with a loading angle of 0 degrees. The ratio of calculated value according to formula (1) to experimental value is shown in Table 5. The maximum ratio of calculated value to experimental value is 0.86, the average is 0.686, the coefficient of variation is 0.131. Therefore, calculation formula for shear capacity in the current technical specifications for special-shaped columns is also applicable to the design calculation of broad-limb special-shaped columns. Conclusions The main conclusions drawn from the experimental studies on shear capacities of broad-limb special-shaped columns are as follows: 1.The shear slipping phenomenon of broad-limb special-shaped column hysteresis curve is serious, hysteresis energy-dissipating capacity is poor, and the pros and cons ductility factors of skeleton curve are smaller. 2.The influence of limb width to thickness ratio on shear capacity of broad-limb special-shaped column is not obvious. 3.The calculation formula for shear capacity in current technical specifications for special-shaped columns is also applicable to shear capacity calculation of broad-limb special-shaped columns. Acknowledgements This work was financially supported by the National Natural Science Foundation of China (50878141). References
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