基本板设计示例使用AISC 360-22 和ACI 318-19
问题陈述:
确定设计的列板连接是否足够 25 ps compression load, 3 ps VY剪切负荷 1 基普 Vz shear load.
给定数据:
柱:
列部分: HSS6x0.312
列区域: 5.220 在2
列材料: A36
底盘:
基板尺寸: 12 在x 12 在
基板厚度: 1/2 在
底板材料: A36
灌浆:
灌浆厚度: 3/4 在
具体:
混凝土尺寸: 13 在x 13 在
混凝土厚度: 8 在
混凝土材料: 3000 压力
破裂或无裂缝: 破裂
锚:
锚直径: 1/2 在
有效嵌入长度: 5 在
Steel Material: A325N
Threads in Shear Plane: Included
Anchor Ending: Rectangular Plate
焊缝:
焊缝尺寸: 1/4 在
填充金属分类: E70XX
Transfer compression load via welds: 是的
锚数据 (从 SkyCiv计算器):
注意:
The purpose of this design example is to demonstrate the step-by-step calculations for capacity checks involving concurrent shear and axial loads. Some of the required checks have already been discussed in the previous design examples. Please refer to the links provided in each section.
分步计算:
检查一下 #1: 计算焊接容量
Given that the column compression load is transferred via welds, we need to consider the resultant load of the compression and shear loads in determining the strength of the welds.
评估焊接能力, 我们首先确定 总焊接长度 基于列尺寸.
\(L_{\文本{焊接}} = \pi d_{\文本{上校}} = \pi \times 6\ \文本{在} = 18.85\ \文本{在}\)
下一个, we express the demand in terms of 单位长度力.
\(c_u = \frac{n_x}{L_{\文本{焊接}}} = frac{25\ \文本{基普}}{18.85\ \文本{在}} = 1.3263\ \文本{kip/in}\)
\(v_{你} = frac{v_y}{L_{\文本{焊接}}} = frac{3\ \文本{基普}}{18.85\ \文本{在}} = 0.15915\ \文本{kip/in}\)
\(v_{到} = frac{v_z}{L_{\文本{焊接}}} = frac{1\ \文本{基普}}{18.85\ \文本{在}} = 0.053052\ \文本{kip/in}\)
The resultant load is determined as:
\(r_u = sqrt{(c_u)^ 2 + (v_{你})^ 2 + (v_{到})^ 2}\)
\(r_u = sqrt{(1.3263\ \文本{kip/in})^ 2 + (0.15915\ \文本{kip/in})^ 2 + (0.053052\ \文本{kip/in})^ 2}\)
\(r_u = 1.3369\ \文本{kip/in}\)
然后, 我们确定 fillet weld capacity per unit length using AISC 360-22 情商. J2-4. Note that for HSS sections, kds 总是等于 1.0.
\(钢底板设计欧洲规范{DS} = 1.0 + 0.5\big(\没有(\θ)\big)^{1.5} = 1 + 0.5 \times \big(\没有(0)\big)^{1.5} = 1\)
\(\phi r_n = phi \, 0.6 F_{EXX} e_w k_{DS} = 0.75 \次 0.6 \次 70\ \文本{KSI} \次 0.177\ \文本{在} \次 1 = 5.5755\ \文本{kip/in}\)
The next capacity to check is the base metal capacity of the connecting elements. This is also expressed as force per unit length. 我们使用 AISC 360-22 情商. J4-4 for both the column and base plate capacities.
\( \phi r_{NBM,上校} = \phi\,0.6\,F_{ü,上校}\,t_{上校} = 0.75 \次 0.6 \次 58\ \文本{KSI} \次 0.291\ \文本{在} = 7.5951\ \文本{kip/in} \)
\( \phi r_{NBM,BP} = \phi\,0.6\,F_{ü,BP}\,t_{BP} = 0.75 \次 0.6 \次 58\ \文本{KSI} \次 0.5\ \文本{在} = 13.05\ \文本{kip/in} \)
We then take the minimum capacity as the governing base metal capacity.
\(\phi r_{NBM} = \min\big(\phi r_{NBM,BP},\ \phi r_{NBM,上校}\big) = min(13.05\ \文本{kip/in},\ 7.5951\ \文本{kip/in}) = 7.5951\ \文本{kip/in}\)
最后, we compare both the fillet weld capacity and the base metal capacity against the weld demand.
以来 1.3369 kip/in < 5.5755 kip/in 和 1.3369 kip/in < 7.5951 kip/in 焊接容量是 充足的.
检查一下 #2: 计算柱的轴承能力
A design example for the bearing capacity of the column is already discussed in the Base Plate Design Example for Compression. Please refer to this link for the step-by-step calculation.
检查一下 #3: 计算由于压缩负荷而导致的底板弯曲屈服能力
A design example for the base plate flexural yielding capacity is already discussed in the Base Plate Design Example for Compression. Please refer to this link for the step-by-step calculation.
检查一下 #4: 混凝土轴承能力
A design example for the concrete bearing capacity is already discussed in the Base Plate Design Example for Compression. Please refer to this link for the step-by-step calculation.
检查一下 #5: Concrete breakout capacity (Vy Shear)
A design example for the concrete breakout capacity due to Vy shear is ready discussed in the Base Plate Design Example for Shear. Please refer to this link for the step-by-step calculation.
检查一下 #6: Concrete breakout capacity (Vz Shear)
A design example for the concrete breakout capacity due to Vz shear is already discussed in the Base Plate Design Example for Shear. Please refer to this link for the step-by-step calculation.
检查一下 #7: Concrete pryout capacity
A design example for the capacity of the concrete section against pryout is already discussed in the Base Plate Design Example for Shear. Please refer to this link for the step-by-step calculation.
检查一下 #8: Anchor Rod Shear Capacity
A design example for the shear capacity of the anchor rod is already discussed in the Base Plate Design Example for Shear. Please refer to this link for the step-by-step calculation.
设计概要
的 SkyCiv底板设计软件 可以自动为此设计示例生成逐步计算报告. 它还提供了执行的检查及其结果比率的摘要, 一目了然地使信息易于理解. 以下是示例摘要表, 报告中包括.
SkyCiv样本报告
点击这里 下载示例报告.
购买基板软件
单独购买基本板设计模块的完整版本，而没有任何其他SkyCiv模块. 这为您提供了底板设计的完整结果, 包括详细报告和更多功能.
