Journal of Northeastern University(Natural Science) ›› 2024, Vol. 45 ›› Issue (11): 1604-1611.DOI: 10.12068/j.issn.1005-3026.2024.11.011
• Resources & Civil Engineering • Previous Articles Next Articles
Yan WANG1(), Zhe-chao WANG2, Chang-hao LI3, Peng CUI4
Received:
2023-05-29
Online:
2024-11-15
Published:
2025-02-24
Contact:
Yan WANG
About author:
WANG Yan, E-mail: wangyan2@mail.neu.edu.cnCLC Number:
Yan WANG, Zhe-chao WANG, Chang-hao LI, Peng CUI. Shear Performance of Headed Studs in UHPC Containing Small Coarse Aggregates[J]. Journal of Northeastern University(Natural Science), 2024, 45(11): 1604-1611.
材料名称 | 尺寸 | 质量/kg | |
---|---|---|---|
UHPC 凝胶材料 | 石英砂 | 毫米级 | 848.4 |
水泥 | 微米级 | 771.2 | |
粉煤灰 | 微米级 | 77.1 | |
石英粉 | 微米级 | 154.2 | |
硅灰 | 亚微米级 | 154 | |
高效减水剂 | 微米级 | 10.1 | |
端勾型钢纤维 | ?0.2 mm×13 mm | 157 | |
水 | 微米级 | 168 |
Table 1 Compositions of 1m3 conventional UHPC
材料名称 | 尺寸 | 质量/kg | |
---|---|---|---|
UHPC 凝胶材料 | 石英砂 | 毫米级 | 848.4 |
水泥 | 微米级 | 771.2 | |
粉煤灰 | 微米级 | 77.1 | |
石英粉 | 微米级 | 154.2 | |
硅灰 | 亚微米级 | 154 | |
高效减水剂 | 微米级 | 10.1 | |
端勾型钢纤维 | ?0.2 mm×13 mm | 157 | |
水 | 微米级 | 168 |
材料名称 | UHPC凝胶材料 | 河沙 | 玄武岩 | 端构型钢纤维?0.2 mm×13 mm | 水 |
---|---|---|---|---|---|
质量 | 1 080 | 580 | 600 | 157 | 162.6 |
Table 2 Compositions of 1m3 UHPC with small coarse aggregates
材料名称 | UHPC凝胶材料 | 河沙 | 玄武岩 | 端构型钢纤维?0.2 mm×13 mm | 水 |
---|---|---|---|---|---|
质量 | 1 080 | 580 | 600 | 157 | 162.6 |
检验项目 | 试件尺寸/mm | 数量 | 试验结果平均值 | |
---|---|---|---|---|
常规UHPC | 含小型粗骨料UHPC | |||
Ec | 300×100×100 | 5 | 42.8 GPa | 52.1 GPa |
fcc | 100×100×100 | 10 | 143.0 MPa | 151.0 MPa |
fcp | 300×100×100 | 15 | 118.5 MPa | 127.1 MPa |
fcf | 400×100×100 | 15 | 25.2 MPa | 22.4 MPa |
εsh | 515×100×100 | 3 | 402 με | 200 με |
Table 3 Primary mechanical properties of UHPC
检验项目 | 试件尺寸/mm | 数量 | 试验结果平均值 | |
---|---|---|---|---|
常规UHPC | 含小型粗骨料UHPC | |||
Ec | 300×100×100 | 5 | 42.8 GPa | 52.1 GPa |
fcc | 100×100×100 | 10 | 143.0 MPa | 151.0 MPa |
fcp | 300×100×100 | 15 | 118.5 MPa | 127.1 MPa |
fcf | 400×100×100 | 15 | 25.2 MPa | 22.4 MPa |
εsh | 515×100×100 | 3 | 402 με | 200 με |
钢材种类 | 弹性模量Es | 屈服强度fs | 极限强度fu |
---|---|---|---|
GPa | MPa | MPa | |
Q345钢板 | 206 | 374 | 521 |
HRB400钢筋 | 206 | 462 | 583 |
ML15栓钉 | 206 | 300 | 400 |
Table 4 Primary mechanical properties of steel
钢材种类 | 弹性模量Es | 屈服强度fs | 极限强度fu |
---|---|---|---|
GPa | MPa | MPa | |
Q345钢板 | 206 | 374 | 521 |
HRB400钢筋 | 206 | 462 | 583 |
ML15栓钉 | 206 | 300 | 400 |
编号 | 屈服荷载 | 屈服滑移 | 破坏荷载 | 破坏滑移 |
---|---|---|---|---|
kN | mm | kN | mm | |
N1 | 989 | 0.278 | 1 388 | 0.766 |
N2 | 922 | 0.257 | 1 146 | 0.928 |
N3 | 941 | 0.319 | 1 122 | 0.837 |
标准差 | 28.2 | 0.025 7 | 120.1 | 0.066 3 |
平均值 | 950.7 | 0.285 | 1 218.6 | 0.844 |
Table 5 Results of push?out test
编号 | 屈服荷载 | 屈服滑移 | 破坏荷载 | 破坏滑移 |
---|---|---|---|---|
kN | mm | kN | mm | |
N1 | 989 | 0.278 | 1 388 | 0.766 |
N2 | 922 | 0.257 | 1 146 | 0.928 |
N3 | 941 | 0.319 | 1 122 | 0.837 |
标准差 | 28.2 | 0.025 7 | 120.1 | 0.066 3 |
平均值 | 950.7 | 0.285 | 1 218.6 | 0.844 |
计算方法 | 计算理论 | 含小型粗骨料UHPC中 栓钉状态 | 单钉抗剪刚度K计算结果 | 应考虑的折减系数η |
---|---|---|---|---|
kN·mm-1 | ||||
式(1) | — | 763.5 | — | |
依据Fs | 取Fs的1/3倍[ | 弹性状态 | 554.3 | 0.73 |
取Fs的0.5倍[ | 轻微塑性损伤状态 | 475.1 | 0.62 | |
取Fs的0.7倍[ | 接近完全屈服状态 | 437.5 | 0.57 | |
依据Sp | 取Sp=0.2mm[ | 轻微塑性损伤状态 | 483.9 | 0.63 |
取Sp=0.5mm[ | 完全屈服状态 | 280.4 | 0.37 | |
取Sp=0.8mm[ | 完全屈服状态 | 193.3 | 0.25 | |
取Sp=1.0mm[ | 完全屈服状态 | 171.3 | 0.22 |
Table 6 Calculation methods and results of shear stiffness
计算方法 | 计算理论 | 含小型粗骨料UHPC中 栓钉状态 | 单钉抗剪刚度K计算结果 | 应考虑的折减系数η |
---|---|---|---|---|
kN·mm-1 | ||||
式(1) | — | 763.5 | — | |
依据Fs | 取Fs的1/3倍[ | 弹性状态 | 554.3 | 0.73 |
取Fs的0.5倍[ | 轻微塑性损伤状态 | 475.1 | 0.62 | |
取Fs的0.7倍[ | 接近完全屈服状态 | 437.5 | 0.57 | |
依据Sp | 取Sp=0.2mm[ | 轻微塑性损伤状态 | 483.9 | 0.63 |
取Sp=0.5mm[ | 完全屈服状态 | 280.4 | 0.37 | |
取Sp=0.8mm[ | 完全屈服状态 | 193.3 | 0.25 | |
取Sp=1.0mm[ | 完全屈服状态 | 171.3 | 0.22 |
公式编号 | 参考规范 | 设计计算公式 | 计算参数说明 | 单钉抗剪承载力F/kN | 可靠度β | |
---|---|---|---|---|---|---|
设计结果 | 试验结果 | |||||
式(2) | JTG/T D64-01—2015[ | 95.51 | 152.30 | 3.79 | ||
GB 50017—2017[ | ||||||
式(3) | EC4[ | 97.28 | 152.30 | 3.67 | ||
式(4) | AASHTO[ | 129.20 | 152.30 | 1.54 | ||
式(5) | AISC 360-10[ | 114.00 | 152.30 | 2.55 |
Table 7 Calculation methods and results of shear capacity
公式编号 | 参考规范 | 设计计算公式 | 计算参数说明 | 单钉抗剪承载力F/kN | 可靠度β | |
---|---|---|---|---|---|---|
设计结果 | 试验结果 | |||||
式(2) | JTG/T D64-01—2015[ | 95.51 | 152.30 | 3.79 | ||
GB 50017—2017[ | ||||||
式(3) | EC4[ | 97.28 | 152.30 | 3.67 | ||
式(4) | AASHTO[ | 129.20 | 152.30 | 1.54 | ||
式(5) | AISC 360-10[ | 114.00 | 152.30 | 2.55 |
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