Query:
学者姓名:李振宝
Refining:
Year
Type
Indexed by
Source
Complex
Co-Author
Language
Clean All
Abstract :
In this study, the axial compressive performance of steel-concrete-steel composite walls (SCSCWs) with novel dumbbell-shaped connectors (DSCs) was investigated. Six specimens were designed and tested, and the study parameters included the physical dimensions and arrangement schemes of DSCs. The failure mode, axial displacement, steel strain, and bearing capacity of the specimens were analyzed. The external steel plates exhibited local buckling, and the internal concrete was crushed. The variation in the physical dimensions of the DSC had little effect on the failure modes, and increasing the number of connectors improved the bearing capacity of the specimens. The axial load-displacement relationships of the SCSCWs were calculated considering the effects of local buckling and post-buckling behavior of steel faceplates in the constitutive relationship. The theoretical curves were in good agreement with the experimental results. A simplified formula for the bearing capacity was proposed, and the average ratio of the experimental to theoretical peak loads was 0.98, indicating that the simplified formula had high accuracy. ABAQUS software was used to simulate the axial behavior of SCSCWs. The simulated results were similar to those of the experiments, and the average ratio of the experimental bearing capacity to the corresponding simulated value was 0.99. Based on the benchmark model, further parameter analyses were conducted to study the effects of material strength and physical dimensions on the axial behavior of SCSCWs. Increasing the material strength and sectional thickness could increase the bearing capacity, and the failure mode was not affected. The theoretical initial stiffness of the SCSCWs was calculated, and the accuracy of the formulas was verified using the simulated results.
Keyword :
Axial behavior Axial behavior Theoretical analysis Theoretical analysis Local buckling Local buckling Steel-concrete-steel composite wall Steel-concrete-steel composite wall Finite element analysis Finite element analysis
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Zhao, Yukun , Li, Zhenbao , Ma, Hua . Experimental and numerical studies on compressive behavior of steel-concrete-steel composite walls considering local buckling and post-buckling effect [J]. | THIN-WALLED STRUCTURES , 2023 , 182 . |
MLA | Zhao, Yukun 等. "Experimental and numerical studies on compressive behavior of steel-concrete-steel composite walls considering local buckling and post-buckling effect" . | THIN-WALLED STRUCTURES 182 (2023) . |
APA | Zhao, Yukun , Li, Zhenbao , Ma, Hua . Experimental and numerical studies on compressive behavior of steel-concrete-steel composite walls considering local buckling and post-buckling effect . | THIN-WALLED STRUCTURES , 2023 , 182 . |
Export to | NoteExpress RIS BibTex |
Abstract :
提出了基于Python和图形处理器(GPU)数值求解的实时混合试验系统。将土-结相互作用系统作为试验模型,使用Python-GPU代替CPU数值求解,对提出的实时混合试验系统进行了仿真与试验验证。研究结果表明,使用Python-GPU对无条件稳定算法求解,积分步长20 ms时GPU实时求解模型自由度超过24000,是同一台计算机CPU求解规模的7倍左右,提升了实时混合试验的试验能力。
Keyword :
实时混合试验 实时混合试验 数值积分算法 数值积分算法 图形处理器 图形处理器 Python Python 求解效率 求解效率
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | 董晓辉 , 唐贞云 , 李振宝 et al. 应用Python-GPU求解的实时混合试验方法研究 [J]. | 振动工程学报 , 2023 , 36 (02) : 517-525 . |
MLA | 董晓辉 et al. "应用Python-GPU求解的实时混合试验方法研究" . | 振动工程学报 36 . 02 (2023) : 517-525 . |
APA | 董晓辉 , 唐贞云 , 李振宝 , 杜修力 . 应用Python-GPU求解的实时混合试验方法研究 . | 振动工程学报 , 2023 , 36 (02) , 517-525 . |
Export to | NoteExpress RIS BibTex |
Abstract :
This paper studies the shear behavior of U-shaped steel-concrete composite beams (USCCBs), which include eight full-scale beam specimens with different loading directions, loading positions, and shear span ratios. The USCCB is composed of reinforcing bars, encased concrete, U-shaped steel plate, headed studs, and novel dumbbell-shaped connectors. The three-point loading tests were carried out to confirm the shear failure mode and force-transfer mechanism of a concentrated load. The diagonal compression failure of encased concrete, welding fracture and local buckling of U-shaped steel plate, and cracking and spalling of concrete slab were observed in the experiments. The displacement ductility factor of eight specimens was between 1.55 and 3.61, and a rapid drop of the load did not occur in this study. The concrete slab reached ultimate compressive strength, the U-shaped steel plate mainly reached yield strength, and the steel-concrete relative slip or separation did not occur before the load reached peak value. The loading direction and shear span ratio have more effect on the bearing capacity of specimens. The novel connector controls the buckling range of the steel plate, but it has less effect on the bearing capacity. The transfer path of the shear load was measured and analyzed by strain data, and the included angle was between 33.5 degrees and 49.2 degrees. The calculation method of shear capacity for USCCB specimens was proposed, and the average ratio of calculation/test was 1.04.
Keyword :
Theoretical formula Theoretical formula Shear failure Shear failure Loading direction Loading direction U-shaped steel plate U-shaped steel plate Composite beam Composite beam
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Zhao, Yukun , Li, Zhenbao , Ma, Hua et al. Shear Behavior of U-Shaped Steel-Concrete Composite Beams with Positive and Negative Loading [J]. | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING , 2022 , 20 (10) : 1229-1246 . |
MLA | Zhao, Yukun et al. "Shear Behavior of U-Shaped Steel-Concrete Composite Beams with Positive and Negative Loading" . | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING 20 . 10 (2022) : 1229-1246 . |
APA | Zhao, Yukun , Li, Zhenbao , Ma, Hua , Kan, Jiping , Zhang, Nana . Shear Behavior of U-Shaped Steel-Concrete Composite Beams with Positive and Negative Loading . | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING , 2022 , 20 (10) , 1229-1246 . |
Export to | NoteExpress RIS BibTex |
Abstract :
In this study, six steel-concrete-steel composite wall (SCSCW) specimens have been designed and manufactured, and their out-of-plane flexural behaviors under combined axial and horizontal loads are experimentally studied. The study parameters include the connector arrangement scheme and applied axial load. The effects of these parameters on the failure modes, experimental load-displacement curves, bearing capacities, ductility co-efficients, stiffness, energy dissipation capacities, and strain distributions of the specimens are analyzed. All specimens exhibit sectional flexural failure. The failure phenomena include the out-of-plane local buckling, concrete crushing, and welding fracture of the steel plates. These specimens show excellent ductility with an average ductility coefficient 2.27. The strength degradation coefficients of the specimens are >0.85. Increasing the number of connectors can restrict the local buckling of external steel plates, and the bearing capacities of the specimens are also improved. The connector arrangement scheme and axial load significantly influence the secant stiffness of the specimens during the initial stage of the experiments. When the connector arrangement schemes are identical, the higher the axial load, the better the energy dissipation capacity of the specimens. A simplified calculation model for the flexural capacity of SCSCWs is proposed considering the effects of local buckling and side plates, which has high accuracy and efficiency, and average ratio between the calculated and experimental peak loads is 0.96. A brief design example for the SCSCWs is provided to illustrate the design process considering the axial and out-of-plane loads.
Keyword :
Connector Connector Out -of -plane flexural behavior Out -of -plane flexural behavior Steel -concrete -steel composite walls (SCSCWs) have high bearing Steel -concrete -steel composite walls (SCSCWs) have high bearing Steel -concrete -steel composite walls Steel -concrete -steel composite walls Local buckling Local buckling Calculation model Calculation model
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Zhao, Yukun , Li, Zhenbao , Wang, Lihui et al. Experimental study on out-of-plane flexural behavior of steel-concrete-steel composite walls [J]. | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2022 , 198 . |
MLA | Zhao, Yukun et al. "Experimental study on out-of-plane flexural behavior of steel-concrete-steel composite walls" . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 198 (2022) . |
APA | Zhao, Yukun , Li, Zhenbao , Wang, Lihui , Tang, Zhenyun , Ma, Hua . Experimental study on out-of-plane flexural behavior of steel-concrete-steel composite walls . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2022 , 198 . |
Export to | NoteExpress RIS BibTex |
Abstract :
使用图形处理器(GPU)代替传统中央处理器(CPU)作为数值求解硬件,建立基于LABVIEW-MATLAB-GPU的实时子结构试验架构。以土-结相互作用系统为载体,通过数值仿真与试验对该架构的性能进行验证。试验与仿真结果表明,本文方法将实时子结构试验中数值子结构求解自由度提高到27000,提升了数值模型求解规模,拓展了实时子结构试验应用范围。
Keyword :
图形处理器 图形处理器 实时子结构试验 实时子结构试验 振动台 振动台 有限元模拟 有限元模拟 数值积分算法 数值积分算法
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | 董晓辉 , 唐贞云 , 李振宝 et al. 应用GPU求解的实时子结构试验架构与性能验证 [J]. | 振动工程学报 , 2022 , 35 (01) : 64-71 . |
MLA | 董晓辉 et al. "应用GPU求解的实时子结构试验架构与性能验证" . | 振动工程学报 35 . 01 (2022) : 64-71 . |
APA | 董晓辉 , 唐贞云 , 李振宝 , 杜修力 . 应用GPU求解的实时子结构试验架构与性能验证 . | 振动工程学报 , 2022 , 35 (01) , 64-71 . |
Export to | NoteExpress RIS BibTex |
Abstract :
预制空心墙板内部设置竖向孔洞,并在混凝土内配置一定数量的纵向钢筋和水平钢筋。在传统圆形空心截面形式的基础上,提出了新型立群混凝土截面形式。设计、制作了2组采用立群混凝土截面的足尺预制空心墙板试件,通过单调施加轴向荷载来研究其轴心受压性能。试验结果表明:高厚比为12.5的预制立群混凝土空心墙板试件其破坏形态为失稳破坏,破坏时平面外位移较大、墙体高度中部混凝土崩溅、钢筋裸露;高厚比为6.25的预制立群混凝土空心墙板试件其破坏形态为截面受压破坏,破坏时平面外位移小,不会发生失稳。预制立群混凝土空心墙板轴心受压承载力很高,可高达6000kN左右。对试验结果进行分析,参考混凝土结构设计规范中的正截面受压...
Keyword :
轴心受压承载力 轴心受压承载力 预制空心墙板 预制空心墙板 失稳破坏 失稳破坏 截面受压破坏 截面受压破坏 立群混凝土空心截面 立群混凝土空心截面
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | 李振宝 , 许良雨 , 李艳娜 et al. 预制立群混凝土空心墙板轴心受压性能试验研究 [J]. | 建筑结构 , 2021 , 51 (S1) : 1124-1131 . |
MLA | 李振宝 et al. "预制立群混凝土空心墙板轴心受压性能试验研究" . | 建筑结构 51 . S1 (2021) : 1124-1131 . |
APA | 李振宝 , 许良雨 , 李艳娜 , 王伟 , 杨晓洪 , 陈幼璠 . 预制立群混凝土空心墙板轴心受压性能试验研究 . | 建筑结构 , 2021 , 51 (S1) , 1124-1131 . |
Export to | NoteExpress RIS BibTex |
Abstract :
应国家绿色宜居的规划要求,乡村住宅将由频繁新建向长寿命发展。为此,乡村住宅的耐久性将和城镇住宅一样需要予以重视。温度、湿度等环境因素对结构耐久性影响显著,现有评价方法中上述数据往往基于气象监测获得,目前乡村缺乏相关数据。既有气象研究结果表明:由于城市热岛效应和干岛效应的存在,城乡温度和相对湿度存在一定差别。基于数据调研,总结了典型城市的热岛和干岛强度,并基于规范耐久性评价方法讨论了基于城市住宅耐久性评价方法、城乡温度和湿度差对乡村混凝土住宅碳化与锈蚀评价的可行性。研究结果表明:大部分乡村住宅可按城市建筑进行耐久性评价,热岛和干岛效应较大的地区,可通过考虑城乡温差和湿度差对乡村住宅的耐久性进行评...
Keyword :
热岛效应 热岛效应 干岛效应 干岛效应 碳化 碳化 锈蚀 锈蚀 乡村混凝土住宅 乡村混凝土住宅
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | 田易卓 , 唐贞云 , 高晓明 et al. 乡村混凝土住宅碳化与锈蚀评价方法研究 [J]. | 建筑结构 , 2021 , 51 (S1) : 1386-1394 . |
MLA | 田易卓 et al. "乡村混凝土住宅碳化与锈蚀评价方法研究" . | 建筑结构 51 . S1 (2021) : 1386-1394 . |
APA | 田易卓 , 唐贞云 , 高晓明 , 李振宝 . 乡村混凝土住宅碳化与锈蚀评价方法研究 . | 建筑结构 , 2021 , 51 (S1) , 1386-1394 . |
Export to | NoteExpress RIS BibTex |
Abstract :
钢-混凝土-钢组合墙外部被钢板包围,内部填充混凝土,通过各种连接件或加劲肋将钢板与混凝土连为整体。在传统连接形式的基础上,提出了新型的哑铃型连接件,将其与传统栓钉配合用于组合墙中。设计、制作了4个哑铃型连接件钢-混凝土-钢组合墙试件,通过单调施加竖向均布面荷载来研究其竖向抗压性能。试验结果表明:钢板局部屈曲是试件的破坏形式之一,这不受连接件形式与布置方案的影响;连接件的布置方案决定了钢板临界屈曲应力,连接间距越小则临界屈曲应力越大;试件竖向承载能力达到峰值之后,会较快的下降,即钢板的屈曲后强度下降较快。对试验结果进行分析,参考规范以及相关研究结果,得到了竖向承载力实用计算公式,计算结果与试验数...
Keyword :
轴向承载力 轴向承载力 钢-混凝土-钢组合墙 钢-混凝土-钢组合墙 哑铃型连接件 哑铃型连接件 局部屈曲 局部屈曲
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | 马华 , 陈宇星 , 李振宝 et al. 哑铃型连接钢-混凝土-钢组合墙轴向抗压性能试验研究 [J]. | 建筑结构 , 2021 , 51 (S1) : 1563-1568 . |
MLA | 马华 et al. "哑铃型连接钢-混凝土-钢组合墙轴向抗压性能试验研究" . | 建筑结构 51 . S1 (2021) : 1563-1568 . |
APA | 马华 , 陈宇星 , 李振宝 , 杜育科 . 哑铃型连接钢-混凝土-钢组合墙轴向抗压性能试验研究 . | 建筑结构 , 2021 , 51 (S1) , 1563-1568 . |
Export to | NoteExpress RIS BibTex |
Abstract :
针对支承大跨度屋盖钢管柱的受力特点,进行了3个低轴压比钢管柱在水平往复荷载下的模型试验.采用非线性有限元法对钢管柱的变形性能进行计算分析,分别考察长细比、径厚比和轴压比对钢管柱屈服变形角和极限变形角的影响.试验结果表明:当轴压比为0.2左右时,钢管柱在水平往复荷载作用下,钢管柱的滞回曲线均为饱满的梭形.当径厚比较小时,钢管柱塑性变形发展减缓,损伤程度下降,耗能能力增强;当长细比较小时,钢管柱塑性变形发展加快,耗能能力减弱.钢管柱进入弹塑性阶段后,底部发生环向外凸变形,在达到极限承载力时,柱底外鼓非常显著.屈服变形角和极限变形角均远大于规范限值.有限元分析结果表明:钢管柱的屈服变形角与轴压比、长...
Keyword :
有限元分析 有限元分析 试验 试验 轴压比 轴压比 径厚比 径厚比 变形能力 变形能力 钢管柱 钢管柱 长细比 长细比
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | 范重 , 柴会娟 , 陈宇辰 et al. 圆钢管柱变形性能研究 [J]. | 天津大学学报(自然科学与工程技术版) , 2021 , 54 (02) : 133-143 . |
MLA | 范重 et al. "圆钢管柱变形性能研究" . | 天津大学学报(自然科学与工程技术版) 54 . 02 (2021) : 133-143 . |
APA | 范重 , 柴会娟 , 陈宇辰 , 张康伟 , 李振宝 , 张广平 et al. 圆钢管柱变形性能研究 . | 天津大学学报(自然科学与工程技术版) , 2021 , 54 (02) , 133-143 . |
Export to | NoteExpress RIS BibTex |
Abstract :
Earthquake action is multi-dimensional and random. The anti-seismic capability of beam-column joints in reinforced concrete (RC) frame structures under arbitrary horizontal direction loading may be lower than the design capability for unidirectional earthquake actions. To date, detailed calculation methods for the shear capability and shearing performance of joints in RC frames under arbitrary horizontal direction loading have not been reported. For this reason, in this work, the shear mechanism of beam-column joints in an RC frame under arbitrary horizontal direction loading is analysed. This study shows that two oblique compression zones form at the corners of the joint when a synthetic shear force is imposed on the joint, and an oblique compression strut is formed in the core area of the joint, which is different from the shear mechanism of a joint under unidirectional loading. Furthermore, a shear capacity calculation model is established based on the strut-and-tie model. The predicted values of the shear capability in this work are in good agreement with the reported experimental results.
Keyword :
modelling modelling shear shear joints joints
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Cui, Yanwei , Ma, Hua , Song, Kun et al. Shear capacity of a reinforced concrete frame joint subjected to arbitrary horizontal loading [J]. | MAGAZINE OF CONCRETE RESEARCH , 2021 , 73 (13) : 649-660 . |
MLA | Cui, Yanwei et al. "Shear capacity of a reinforced concrete frame joint subjected to arbitrary horizontal loading" . | MAGAZINE OF CONCRETE RESEARCH 73 . 13 (2021) : 649-660 . |
APA | Cui, Yanwei , Ma, Hua , Song, Kun , Li, Zhenbao , Tang, Zhenyun . Shear capacity of a reinforced concrete frame joint subjected to arbitrary horizontal loading . | MAGAZINE OF CONCRETE RESEARCH , 2021 , 73 (13) , 649-660 . |
Export to | NoteExpress RIS BibTex |
Export
Results: |
Selected to |
Format: |