In-Plane Yield Criterion of Steel-Concrete-Steel Unit Panel

doi:10.16183/j.cnki.jsjtu.2020.347

Abstract

Abstract:

A yield criterion for the steel-concrete-steel (SCS) unit panel subjected to in-plane membrane forces is proposed, which is expressed in the in-plane (principal) stress space and follows the Tresca yielding principle for steel plates. This yield criterion for the SCS unit panel is based on the Navier’s three principles (equilibrium conditions, strain compatibility, and the constitutive laws of materials). A calculation method for determining the yield load of the SCS unit in combination with the test data is proposed, and the method is applied to the bidirectional tensile and compression test of the SCS unit. By using this method, nine SCS tested panels with different steel ratios and different tension compression ratios are analyzed, and the yield criterion of the SCS unit is compared with the test results. In addition, seven SCS shear specimens tested by Ozaki are used for further verification. The results derived from the yield criterion of the SCS panel elements are found in good agreement with the test results.

Key words: steel-concrete-steel structure, in-plane stress state, mechanical analysis, yield criterion

CLC Number:

TU398

HUANG Chengjun, ZHU Tianyi, SONG Xiaobing. In-Plane Yield Criterion of Steel-Concrete-Steel Unit Panel[J]. Journal of Shanghai Jiao Tong University, 2022, 56(4): 422-430.

Figures/Tables 10

Fig.1

Fig.2

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Fig.4

Fig.5

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Fig.7

Tab.1

Fig.8

Tab.2

Yield strengths from SCS yield criterion and shear test

试件编号	钢板		混凝土 f_c(E_c)/MPa	试验结果		SCS单元屈服准则
试件编号	A_s(A_p)/cm²	f_y( $E s)$ /MPa	混凝土 f_c(E_c)/MPa	轴力/kN	剪力/kN	剪力/kN	相对误差/%
S2-00NN	53.5(17.1)	340(1.97×10⁵)	42.2(2.72×10⁴)	0	2290	2381	3.99
S2-15NN	53.5(17.1)	340(1.97×10⁵)	41.6(2.77×10⁴)	353	2330	2564	10.04
S2-30NN	53.5(17.1)	340(1.97×10⁵)	42.0(2.79×10⁴)	705	2490	2693	8.14
S3-00NN	75.4(16.9)	351(1.99×10⁵)	41.9(2.71×10⁴)	0	3070	3176	3.44
S3-15NN	75.4(16.9)	351(1.99×10⁵)	41.6(2.67×10⁴)	353	3130	3238	3.43
S3-30NN	75.4(16.9)	351(1.99×10⁵)	40.1(2.70×10⁴)	705	3170	3307	4.33
S4-00NN	104.9(16.7)	346(2.07×10⁵)	42.8(2.76×10⁴)	0	3560	3805	6.89
平均值							5.75

Tab.2

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试件编号	试验结果		SCS单元屈服准则		相对误差/%
试件编号	拉力/ kN	压力/ kN	拉力/ kN	压力/ kN	相对误差/%
S3-51	840	-4370	789	-4106	-6.05
S3-10	0	-6624	0	-6977	5.32
S5-11	1902	-1902	2081	-2081	9.33
S5-41	1184	-4386	1188	-4400	0.31
S6-01	2640	0	2640	0	0.00
S6-21	1815	-3213	1845	-3264	1.61
S6-41	1283	-4472	1296	-4517	1.00
S6-81	756	-6039	728	-5812	3.75
S6-10	0	-7300	0	-7473	2.36
平均值					3.30