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学者姓名：刘学春
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| GB/T 7714 | Liu, Xuechun , Cui, Xiaoxiong , Yang, Zhiwei et al. Analysis of the Seismic Performance of Site-Bolted Beam to Column Connections in Modularized Prefabricated Steel Structures (vol 2017, 1932730, 2017) [J]. | ADVANCES IN MATERIALS SCIENCE AND ENGINEERING , 2021 , 2021 . |
| MLA | Liu, Xuechun et al. "Analysis of the Seismic Performance of Site-Bolted Beam to Column Connections in Modularized Prefabricated Steel Structures (vol 2017, 1932730, 2017)" . | ADVANCES IN MATERIALS SCIENCE AND ENGINEERING 2021 (2021) . |
| APA | Liu, Xuechun , Cui, Xiaoxiong , Yang, Zhiwei , Zhan, Xinxin . Analysis of the Seismic Performance of Site-Bolted Beam to Column Connections in Modularized Prefabricated Steel Structures (vol 2017, 1932730, 2017) . | ADVANCES IN MATERIALS SCIENCE AND ENGINEERING , 2021 , 2021 . |
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摘要 ：
This study presents six pseudostatic tests on square hollow section steel (HSS) column to H-section beam bolted connections with double cover plates. The failure modes, load-displacement hysteresis curves, and backbone curves of the joints were obtained, as were the energy-dissipating capacity, stiffness, and strength. The seismic energy of the connections is dissipated by slip between the contact surfaces and plastic deformation of the beam, clamp plates and bolt holes. The joints have good rotation capacity, energy-dissipation capacity, and reasonable strength and stiffness. The connections are rigid used in bracing frame and unbracing frame before slip and semirigid for both after slip. They are full-strength in terms of strength classification. Before the interstory drift reaches 0.05, no obvious inelastic deformation occurs, indicating that the connections can be easily repaired by repositioning the connection and retightening the bolts after a severe earthquake because the interstory drift will be much less than 0.05 during a severe earthquake. A finite-element model (FEM) was established and validated through a comparison of the finite element analysis (FEA) and test results, and the bolt tension, stress distribution of the beam, and rotation of the column flange splicing connection were obtained from the FEA results. The tension of the bolt in the beam web decreased slightly, while the tension of the bolt in the beam flange decreased to 60-70% of the original pre-tension when the interstory drift reached 0.06. The column flange splice connection is rigid. Simplified formulas for joint strength were deduced and validated by testing and FEA.
关键词 ：
Bolted connection Bolted connection Bolted rigid connection Bolted rigid connection Bolted steel structure Bolted steel structure Bolt tension variation Bolt tension variation Contact surface slip Contact surface slip Prefabricated steel structure Prefabricated steel structure Seismic performance Seismic performance Slip connection Slip connection Slip resistance Slip resistance
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| GB/T 7714 | Zhan, Xin-Xin , Liu, Xue-Chun , Feng, Shuo et al. Seismic performance of a square HSS column to H-section beam bolted connection with double cover plate [J]. | ENGINEERING STRUCTURES , 2021 , 231 . |
| MLA | Zhan, Xin-Xin et al. "Seismic performance of a square HSS column to H-section beam bolted connection with double cover plate" . | ENGINEERING STRUCTURES 231 (2021) . |
| APA | Zhan, Xin-Xin , Liu, Xue-Chun , Feng, Shuo , Yu, Cheng . Seismic performance of a square HSS column to H-section beam bolted connection with double cover plate . | ENGINEERING STRUCTURES , 2021 , 231 . |
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摘要 ：
In this study, an H-section steel beam with circular holes in a web wrapped with ceramsite concrete (SBWCC) was studied. Static load-bearing capacity tests and finite element analysis were performed on two groups of specimens with different sections. The H-section steel and wrapped ceramsite concrete were well bonded. The load-bearing capacity of the SBWCC was 10% larger than that of the pure H-section steel beam without holes in the web, except for its dead weight. The stiffness of the SBWCC was slightly larger than that of the pure H-section steel beam without holes. The wrapped ceramsite concrete avoided the elastic local instability of the steel beam flange and web. Based on the finite element model verified by experiments, the influences of hole diameter, hole spacing, and U-shaped stirrups on the flexural capacity of the specimens were analyzed. The formulas for the load-bearing capacities and short-term stiffness of the SBWCC were proposed and verified by tests and finite element analysis.
关键词 ：
ceramsite concrete ceramsite concrete flexural performance test flexural performance test load-bearing capacity load-bearing capacity short-term stiffness short-term stiffness steel beam wrapped with concrete steel beam wrapped with concrete
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| GB/T 7714 | Liu, Xuechun , Meng, Kun , Zhang, Ailin et al. Bearing capacity of H-section beam wrapped with ceramsite concrete [J]. | STEEL AND COMPOSITE STRUCTURES , 2021 , 40 (5) : 679-696 . |
| MLA | Liu, Xuechun et al. "Bearing capacity of H-section beam wrapped with ceramsite concrete" . | STEEL AND COMPOSITE STRUCTURES 40 . 5 (2021) : 679-696 . |
| APA | Liu, Xuechun , Meng, Kun , Zhang, Ailin , Zhu, Tao , Yu, Cheng . Bearing capacity of H-section beam wrapped with ceramsite concrete . | STEEL AND COMPOSITE STRUCTURES , 2021 , 40 (5) , 679-696 . |
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摘要 ：
The long-span curved surface steel structure of Beijing Daxing International Airport terminal is super long and large, and the form of the supporting C-shaped column is novel, the structural load bearing is complex. A 1/60 scale model was designed for shaking table test to study its dynamic characteristics under the actions of 8 degree frequent, seismic precautionary and rare earthquakes. The acceleration, displacement and strain under the conditions of one-way, two-way and three-way ground motions were analyzed. The test results show that the response of the overall model is the largest under three-way ground motion, and the structure is greatly affected by the vertical seismic action. The vertical response in the central area is intense, and the horizontal seismic response in other areas is even, which shows that the integrity of the model is good. The supporting structure has good lateral stiffness and its strain response is greatly affected by the horizontal seismic action. The inter-story drift angle under the condition of 8 degree frequent earthquake is 1/639, the inter-story drift angle under the condition of 8 degree rare earthquake is 1/54, which meets the requirement of seismic code. The structure does not collapse under the condition of 9 degree rare earthquake and does not show apparent failure. It is proved that the structure prototype has reasonable safety reserve. The seismic principle that 'the structure hasn't damaged under frequent earthquake, repairable under precautionary earthquake, and doesn't collapse under rare earthquake' is reached, thus the structural design is reasonable. The design of C-shaped column is reasonable, and it has good supporting action and lateral stiffness. © 2021, Editorial Office of Journal of Building Structures. All right reserved.
关键词 ：
Airport buildings Airport buildings Earthquakes Earthquakes Rare earths Rare earths Seismic design Seismic design Steel structures Steel structures Steel testing Steel testing Stiffness Stiffness
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| GB/T 7714 | Zhang, Ailin , Wang, Xiaoqing , Liu, Xuechun et al. Shaking table test on overall-scale model of long-span steel structure of Beijing Daxing International Airport terminal [J]. | Journal of Building Structures , 2021 , 42 (3) : 1-13 . |
| MLA | Zhang, Ailin et al. "Shaking table test on overall-scale model of long-span steel structure of Beijing Daxing International Airport terminal" . | Journal of Building Structures 42 . 3 (2021) : 1-13 . |
| APA | Zhang, Ailin , Wang, Xiaoqing , Liu, Xuechun , Shu, Weinong , Zhu, Zhongyi , Qiang, Shen et al. Shaking table test on overall-scale model of long-span steel structure of Beijing Daxing International Airport terminal . | Journal of Building Structures , 2021 , 42 (3) , 1-13 . |
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摘要 ：
The static performance of a slidable bolt-assembly connection between a double-angle truss and square hollow structural section (SHSS) column was studied using experiments and finite-element simulations. Four specimens with different sizes or types of bolt holes on the gusset plate were tested and analyzed. The slip resistance, yield strength, ultimate strength, and failure mechanism of each connection were obtained. The static and seismic performances of the connections were compared with those of a welded connection, bolted-welded connection, and all-bolted fixed connection. The results showed that the ductility of the slidable bolt-assembly connection exceeded a value of 10, which was higher than the values for the other connections, but the slip resistance was the lowest. The slip resistance of the bolt-assembly connection under a static load was larger than that under a seismic load. The ultimate strength of the bolt-assembly connection was equal to that of the welded connection, and the stiffness was almost the same as that of the welded connection before the slip. The ultimate strengths of the slidable bolt-assembly connections were almost the same under static and cyclic loads. The slip distance increased by 23 mm when the bolt hole diameter was increased by 2 mm. However, the dimensions and shapes of the bolt holes on the gusset plate only had slight effects on the slip resistance, yield strength, and ultimate strength of the joint. A load-bearing model and formulas for calculating the various strengths of the slidable bolt-assembly connection were proposed. © 2020 Elsevier Ltd
关键词 ：
Bolts Bolts Failure (mechanical) Failure (mechanical) Plates (structural components) Plates (structural components) Seismology Seismology Traction (friction) Traction (friction) Trusses Trusses Welding Welding Yield stress Yield stress
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| GB/T 7714 | Zhang, Ai-Lin , Liu, Xue-Chun , Wang, Yue et al. Static performance of slidable bolt-assembly truss-to-column connection with oversized bolt holes [J]. | Journal of Constructional Steel Research , 2021 , 176 . |
| MLA | Zhang, Ai-Lin et al. "Static performance of slidable bolt-assembly truss-to-column connection with oversized bolt holes" . | Journal of Constructional Steel Research 176 (2021) . |
| APA | Zhang, Ai-Lin , Liu, Xue-Chun , Wang, Yue , Yu, Cheng , Bai, Zheng-Xian , Tran, Ha . Static performance of slidable bolt-assembly truss-to-column connection with oversized bolt holes . | Journal of Constructional Steel Research , 2021 , 176 . |
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摘要 ：
In this paper, an H-shaped steel beam wrapped with ceramsite concrete was studied. The H-shaped steel with circular hole in the web was wrapped with ceramsite concrete, and the U-shaped stirrups were used to improve the bonding performance between concrete and H-shaped steel. The ceramsite concrete has good thermal insulation, low heat transfer coefficient, good waterproof performance and light weight. Thus, it can improve the fire-proof and corrosion-resistant capability of steel beam with a little weigh increasing. In order to study the bearing capacity and concrete wrapping effect, the static tests and finite element analysis were carried out on two groups of specimens with different sections. The results show that the built-in steel beam and the wrapped ceramsite concrete are well bonded. The wrapped ceramsite concrete contributes to the bearing capacity of the beam, which can be increased by about 10% compared with the pure steel beam without holes in the web. Compared with the pure steel beam without holes in the web, the overall stiffness has little change. The bending performance of the specimen is similar to that of the reinforced concrete beam, while the wrapped ceramsite concrete avoids the local instability of the beam flange. According to the finite element model verified by experiments, the influences of the diameter of the holes, the spacing of the holes and the spacing of U-shaped stirrups on the flexural capacity of the specimens were analyzed through parametric analysis. Under the conditions specified in GB 50017-2017 'Standard for design of steel structures', the bearing capacity of the specimen with web opening diameter less than 60% the beam height is higher than that of the pure steel beam without web openings. Opening spacing and U-shaped stirrup spacing have little effect on flexural capacity. The formulas for calculating the bearing capacity of specimens are derived and verified, and the formulas can accurately predict the flexural capacity for this type of beam. © 2021, Editorial Office of Journal of Building Structures. All right reserved.
关键词 ：
Bearing capacity Bearing capacity Concrete beams and girders Concrete beams and girders Corrosion resistance Corrosion resistance Finite element method Finite element method Heat transfer performance Heat transfer performance Reinforced concrete Reinforced concrete Steel beams and girders Steel beams and girders Steel corrosion Steel corrosion Thermal insulation Thermal insulation
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| GB/T 7714 | Zhang, Ailin , Zhu, Tao , Liu, Xuechun . Study on flexural performance of H-shaped steel beam wrapped with ceramsite concrete [J]. | Journal of Building Structures , 2021 , 42 (4) : 80-91 . |
| MLA | Zhang, Ailin et al. "Study on flexural performance of H-shaped steel beam wrapped with ceramsite concrete" . | Journal of Building Structures 42 . 4 (2021) : 80-91 . |
| APA | Zhang, Ailin , Zhu, Tao , Liu, Xuechun . Study on flexural performance of H-shaped steel beam wrapped with ceramsite concrete . | Journal of Building Structures , 2021 , 42 (4) , 80-91 . |
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摘要 ：
The tests and finite element analysis were performed to study the influence of slip on static performance of slideable all-bolted connection of truss to square steel tube column. The ultimate bearing capacity, anti-slide capacity, failure mode and failure mechanism of the connection were obtained by test and finite element analysis. The results show that the connection has higher anti-slide and ultimate bearing capacity, and the diameter and type of bolt hole have little effect on the ultimate bearing capacity. The results were compared with the seismic performance of the same connection. The comparisons show that the anti-slide capacity under static load are larger than that under seismic load, because the bolt tension has some lost under cyclic load, but the ultimate bearing capacity is almost same. The results were compared with the static performance of welded connection, bolted-welded connection, all-bolted rigid connection. The comparisons show that the slideable all-bolted connection has largest ductility, the ultimate bearing capacity is basically equal to the welded connection, but anti-slide capacity is lower, the stiffness is almost same before slide. Copyright © 2018 by The Hong Kong Institute of Steel Construction.
关键词 ：
Failure (mechanical) Failure (mechanical) Trusses Trusses Tubular steel structures Tubular steel structures Bolts Bolts Finite element method Finite element method Welding Welding Seismology Seismology Bearing capacity Bearing capacity
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| GB/T 7714 | Liu, Xuechun , Lu, Xu , Pu, Shuanghui et al. Static performance study on slideable all bolted connection of truss to square steel tube column [C] . 2020 . |
| MLA | Liu, Xuechun et al. "Static performance study on slideable all bolted connection of truss to square steel tube column" . (2020) . |
| APA | Liu, Xuechun , Lu, Xu , Pu, Shuanghui , Zhang, Ailin . Static performance study on slideable all bolted connection of truss to square steel tube column . (2020) . |
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摘要 ：
Steel cable with its superior performance is used in steel structure as a brace. An X-deployed cable-braced bolt-assembly steel frame (CBBSF) was proposed. The seismic behaviors of an unbraced moment-resisting bolted steel frame (BSF) and four pairs of CBBSFs were tested and analyzed by the finite-element model under cyclic load. The steel frames of CBBSF arc the same, while the cables have the same sectional area in each pair and have varying sectional areas between different pairs. In each pair of CBBSF including CBBSF-F and CBBSF-W, the cables of CBBSF-F are pre-slacked, while the cables of CBBSF-W are not pre-tensioned or pre-relaxed. A formula for the lateral stiffness of the CBBSF was proposed. The hysteresis performance, strength, ductility, stiffness, self-centering capability, and failure mode of the CBBSFs were obtained and compared with each other and with the BSF. The influence of the cable sectional area and pre-slack on these behaviors was obtained. It was found that CBBSFs exhibit reasonable hysteresis performance, energy dissipation capacity, self-centering capability, and have large stiffness and strength. The hysteretic performance and energy dissipation capacity of CBBSF is better than BSF. The CBBSF with a larger cable sectional area has better self-centering capability. The energy dissipation capacity and ductility increased initial ly with the increase of cable sectional area, then, followed by a subsequent decrease. The cable pre-relaxation decreased the maximum cable force to avoid break, increased the yield displacement, ultimate displacement, and ductility of CBBSF, and slightly decreased the yield and ultimate strength. (C) 2020 Elsevier Ltd. All rights reserved.
关键词 ：
Bolt-assembly Bolt-assembly Cable pre-relaxation Cable pre-relaxation Cyclic loading test Cyclic loading test Energy dissipation capacity Energy dissipation capacity Lateral stiffness formula Lateral stiffness formula X-deployed cable-braced steel frame X-deployed cable-braced steel frame
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| GB/T 7714 | Zhang, Ai-lin , Liu, Xue-chun , Wang, Yue et al. Seismic behavior of an X-deployed cable-braced bolt-assembly steel frame [J]. | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2020 , 170 . |
| MLA | Zhang, Ai-lin et al. "Seismic behavior of an X-deployed cable-braced bolt-assembly steel frame" . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 170 (2020) . |
| APA | Zhang, Ai-lin , Liu, Xue-chun , Wang, Yue , Shang, Zi-xuan , Yu, Cheng , Bai, Zheng-xian . Seismic behavior of an X-deployed cable-braced bolt-assembly steel frame . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2020 , 170 . |
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摘要 ：
Post-earthquake structural repair combined with prefabricated steel structures is an important aspect of repairing buildings damaged by earthquakes and has been extensively studied by earthquake engineering scholars. Based on the concept of plastic damage concentration and replaceable damage elements, and considering the convenience of floor assembly and pipeline pavement, an innovative earthquake-resilient prefabricated opening-web steel channel beam-to-column joint (POWSCBCJ) with flange cover plates (FCPs) was proposed in this paper. By varying four influencing parameters and applying three loading protocols, eight low-frequency cyclic loading tests were carried out on eight full-scale specimens of a new type of earthquake-resilient POWSCBCJ. The seismic behavior and earthquake-resilient performance were evaluated by varying parameters such as the thickness of the FCPs, bolt spacing in the middle row, width of the dog-bone reduced sections, number of bolts, and loading system. The experimental results show that the thickness of the FCPs is the main factor affecting the yielding load and bearing capacity of the joint. In addition, an appropriate number of connecting bolts on the FCP and the bolt spacing in the middle row are conducive to improving the energy dissipation ability of the specimen. At the same time, the hysteretic performance of the joint is stable during the process of equal amplitude loading, indicating that it can be used as a damper.
关键词 ：
Damage control Damage control Damper Damper Earthquake-resilient Earthquake-resilient Opening-web steel channel beam-to-column joint Opening-web steel channel beam-to-column joint Seismic performance Seismic performance
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| GB/T 7714 | Jiang, Zi-Qin , Kang, Yi-Tao , Liu, Xue-Chun et al. Experimental study of an earthquake-resilient prefabricated opening-web steel channel beam-to-column joint with flange cover plates [J]. | ENGINEERING STRUCTURES , 2020 , 221 . |
| MLA | Jiang, Zi-Qin et al. "Experimental study of an earthquake-resilient prefabricated opening-web steel channel beam-to-column joint with flange cover plates" . | ENGINEERING STRUCTURES 221 (2020) . |
| APA | Jiang, Zi-Qin , Kang, Yi-Tao , Liu, Xue-Chun , Cheng, Kui-Kui , Chen, Xin . Experimental study of an earthquake-resilient prefabricated opening-web steel channel beam-to-column joint with flange cover plates . | ENGINEERING STRUCTURES , 2020 , 221 . |
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摘要 ：
In this study, high-strength cables were used to create a prestressed T-type self-centering energy-dissipation brace (PTSEB), which can be used for multi-story and high-rise frame structures. The brace can dissipate energy through friction, provide lateral stiffness through prestressed cables, and automatically return to its original position under the action of cable tension after the external load disappears. Lever action is used to significantly amplify the deformation ability of the brace. Moreover, the energy-dissipation ability of the brace is considerably better than that of a traditional self-centering brace. A test and a finite element analysis were performed on the PTSEB, and the results indicated that the brace had a strong energy-dissipation ability, as well as a high deformation capacity and self-centering capacity. ABAQUS was used to analyze and compare the performance of braces with different sizes. The results showed that in a certain range, as the shell height increased, the seismic performance of the PTSEB was improved significantly; however, an increase in the shell width did not improve the seismic performance of the PTSEB significantly. Reasonable sizes for the PTSEB were proposed based on a finite element parameter analysis to ensure that the brace would have improved energy-dissipation and self centering abilities. A restoring force model of the PTSEB was constructed, and the key points of the restoring force model were obtained using some proposed formulas. The design parameters of the PTSEB could be determined based on these formulas.
关键词 ：
Energy dissipation Energy dissipation High-strength cable High-strength cable Parameter analysis Parameter analysis Restoring force model Restoring force model Self-center Self-center T-type self-centering brace T-type self-centering brace
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| GB/T 7714 | Liu, Xue-Chun , Feng, Shuo , Shang, Zi-Xuan et al. Performance of prestressed T-type self-centering energy-dissipation brace [J]. | ENGINEERING STRUCTURES , 2020 , 223 . |
| MLA | Liu, Xue-Chun et al. "Performance of prestressed T-type self-centering energy-dissipation brace" . | ENGINEERING STRUCTURES 223 (2020) . |
| APA | Liu, Xue-Chun , Feng, Shuo , Shang, Zi-Xuan , Yu, Cheng , Bai, Zheng-Xian . Performance of prestressed T-type self-centering energy-dissipation brace . | ENGINEERING STRUCTURES , 2020 , 223 . |
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