带环向脱空缺陷的钢管混凝土四肢格构柱抗侧性能研究

赵轩; 李镇宇; 胡朝晖; 李贤; 聂影; 刘俊

doi:10.13206/j.gjgS24052202

带环向脱空缺陷的钢管混凝土四肢格构柱抗侧性能研究

doi: 10.13206/j.gjgS24052202

赵轩^1,2,
李镇宇²,
胡朝晖^1,2,
李贤^2, ,,
聂影¹,
刘俊^3,4

1. 中冶赛迪工程技术股份有限公司, 重庆 400013;
2. 中国矿业大学力学与土木工程学院, 江苏徐州 221000;
3. 西安建筑科技大学土木工程学院, 西安 710055;
4. 西安建筑科大工程技术有限公司, 西安 710055

基金项目:

国家自然科学基金面上项目（51978656）；中冶赛迪研发项目（90150915-KJ-001）。

详细信息

作者简介:
赵轩，硕士，正高级工程师，主要从事工程设计与分析，Xuan.Zhao@cisdi.com.cn。

通讯作者:
李贤，博士，教授，主要从事组合结构研究，lixian@cumt.edu.cn。

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出版历程
- 收稿日期: 2024-05-22
- 网络出版日期: 2025-06-07
- 刊出日期: 2025-04-25

Research on Lateral Resistance of Concrete-Filled Steel Tubular Four-Limb Latticed Columns with Circumferential Void Defects

Zhao Xuan^1,2,
Li Zhenyu²,
Hu Chaohui^1,2,
Li Xian^{2
, ,},
Nie Ying¹,
Liu Jun^3,4

1. MCC CCID Engineering Technology Co., Ltd., Chongqing 400013, China;
2. School of Civil Engineering, China University of Mining and Technology, Xuzhou 221000, China;
3. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
4. Xi'an University of Architecture Engineering Technology Co., Ltd., Xi'an 710055, China

摘要

摘要: 由于施工、吊车吨位和运行频率增加等原因，重型工业厂房钢管混凝土格构柱会出现环向脱空现象。为研究具有环向脱空缺陷的钢管混凝土四肢格构柱的抗侧性能，以国内某重型冶金工业厂房的钢管混凝土四肢格构柱为基础，采用有限元分析软件ABAQUS，研究了不同环向脱空率、柱顶脱空高度、脱空柱肢数量与轴压比对格构柱抗侧承载力、抗侧刚度的影响规律。研究结果表明：环向脱空缺陷的存在会使得四肢钢管混凝土格构柱的抗侧承载力与刚度下降，在环向脱空率为1%时的局部脱空缺陷下，格构柱的抗侧承载力和刚度分别下降了3.84%和7.3%，随着环向脱空率的增大，格构柱的抗侧承载力和刚度下降幅度减小；环向脱空和柱顶脱空共同作用下的钢管混凝土四肢格构柱力学性能退化得更显著，在环向脱空率为0.1%、柱顶脱空高度为20 mm时格构柱的抗侧承载力和刚度分别下降了20.49%和29.49%；随着脱空柱肢的增加以及轴压比的增大，环向脱空缺陷对于钢管混凝土四肢格构柱的力学性能退化影响更大；环向脱空率为0.1%、脱空柱肢数为4时，格构柱的抗侧承载力和刚度分别下降了12.38%和29.22%；环向脱空率为0.1%、轴压比为0.33时，格构柱的抗侧承载力和刚度分别下降了31.75%和24.71%。
- 钢管混凝土 /
- 四肢格构柱 /
- 脱空缺陷 /
- 抗侧性能
Abstract: Because of the increase of crane tonnage and operation frequency， the circumferential void defects of concrete-filled steel tubular（CFST） four-limb latticed columns in heavy industrial plants will occur. In order to study the lateral resistance of CFST four-limb latticed columns with circumferential void defects， the effects of different circumferential void ratios， column top’s void heights， numbers of columns with void defects， and axial compression ratios on the lateral bearing capacity and stiffness of the four-limb columns with circumferential void defects were studied by using the finite element analysis software ABAQUS. The results showed that the presence of circumferential void defects reduced the lateral bearing capacity and stiffness of CFST four-limb latticed columns. When the circumferential void ratio was 1%， the lateral bearing capacity and stiffness of the latticed columns decreased by 3.84% and 7.3%， respectively. The lateral bearing capacity and stiffness of latticed columns decreased with the increase of circumferential void ratio. The mechanical properties of CFST four-limb latticed columns were degraded more significantly under the combined action of circumferential voids and column top voids. When the circumferential void ratio was 0.1% and the column top's void height was 20 mm， the lateral bearing capacity and stiffness of the latticed columns decreased by 20.49% and 29.49%， respectively.With the increase of column limbs and axial compression ratio， circumferential void defects had a greater effect on the degradation of mechanical properties of CFST latticed columns. When the circumferential void ratio was 0.1% and the number of limbs was 4， the lateral bearing capacity and stiffness of the latticed columns decreased by 12.38% and 29.22%， respectively. When the circumferential void ratio was 0.1% and the axial compression ratio was 0.33， the lateral bearing capacity and stiffness of the latticed columnd decreased by 31.75% and 24.71%， respectively.
- concrete-filled steel tube /
- four-limb latticed columns /
- void defects /
- lateral resistanc

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参考文献(22)

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