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学者姓名：曹万林
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摘要 ：
Multicell concrete-filled steel tube (CFST) columns with excellent mechanical performance have been used in super high-rise buildings in recent years. According to the requirements of a 265-m tall building, the double-cell CFST columns with an innovative cross section of table tennis racket were applied. Hence, six columns were designed according to the prototype columns and subjected to low-frequency cyclic loading. The impacts of different shear-span ratios (SSRs), axial load ratios (ALRs), and steel ratios on the seismic behavior were elaborated and clarified. The test results indicated that the seismic performance varied in different loading directions owing to the asymmetric cross section, and the columns performed better in the positive loading direction resulted from earlier and more sufficient confinement of the circular steel tube, which was also reflected by the measured strain development. With SSR deceasing from 2.5 to 1.7, earlier and more severe damage was recorded. The resisting capacity and stiffness were significantly improved at a cost of ductility loss. Increasing ALR from 0.2 to 0.4 brought about more damage and worse deformability. However, a proper increase in axial load was beneficial to the resisting capacity and stiffness, and its influence on the restoration capacity was associated with SSR. Increasing the steel ratio (by 33.36%) could effectively postpone and alleviate the local buckling of steel tube, thereby comprehensively improving the seismic performance. A finite element (FE) analysis of such columns was performed to carry out the damage evolution and parametric study, and provide references for their application in practical engineering.
关键词 ：
Seismic performance Seismic performance Shear -span ratio Shear -span ratio Axial load ratio Axial load ratio FE analysis FE analysis CFST column CFST column
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| GB/T 7714 | Dong, Hongying , Zhu, Jian , Cao, Wanlin et al. Seismic behavior of double-cell CFST columns with table tennis racket-shaped cross section [J]. | ENGINEERING STRUCTURES , 2024 , 311 . |
| MLA | Dong, Hongying et al. "Seismic behavior of double-cell CFST columns with table tennis racket-shaped cross section" . | ENGINEERING STRUCTURES 311 (2024) . |
| APA | Dong, Hongying , Zhu, Jian , Cao, Wanlin , Peng, Bin . Seismic behavior of double-cell CFST columns with table tennis racket-shaped cross section . | ENGINEERING STRUCTURES , 2024 , 311 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
This study proposes an innovative prefabricated double L-shaped beam-column joint with triangular stiffener (double L-shaped joint) for low-rise residential buildings. The double L-shaped joint consists of the L-shaped connector with triangular stiffener, web side plate connection, Hshaped beam, and concrete-filled lightweight steel tube (CFLST) column or square hollow steel tube (SHS) column. Twelve double L-shaped joints are manufactured and experimented. The design parameters include the column types (CFLST or SHS), triangular stiffener height, perforated end plate (with or without), and the web side plate connection (with or without). In addition, the failure modes, hysteretic performances, ultimate capacity, stiffness degradation, deformation capacity, energy dissipation, and strain responses of joint specimens are analyzed. The experimental results show that the failure modes include steel tube local buckling, weld cracking, and bolts fracture in the area of the L-shaped connector. The ultimate moment of the CFLST column joints rises from 4.53% to 13.05% compared to the SHS column joints, while the initial stiffness increases from 2.16% to 26.46%. The perforated end plate grows at the ultimate moment, but the ductility index reduces. The initial stiffness and deformation capacity of the specimens without a web side plate connection decreases significantly. The finite element model is developed, and the numerical simulation is conducted. The experimental results are consistent with failure modes and bending moment versus rotation angle curves obtioned by numerical simulation.
关键词 ：
Triangular stiffener Triangular stiffener Numerical simulation Numerical simulation Column-beam joint Column-beam joint Seismic experiment Seismic experiment L-shaped connector L-shaped connector
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| GB/T 7714 | Yang, Zhaoyuan , Cao, Wanlin , Qiao, Qiyun et al. Experimental and numerical study on the prefabricated double L-shaped beam-column joint with triangular stiffener [J]. | JOURNAL OF BUILDING ENGINEERING , 2023 , 69 . |
| MLA | Yang, Zhaoyuan et al. "Experimental and numerical study on the prefabricated double L-shaped beam-column joint with triangular stiffener" . | JOURNAL OF BUILDING ENGINEERING 69 (2023) . |
| APA | Yang, Zhaoyuan , Cao, Wanlin , Qiao, Qiyun , Zhang, Jianwei . Experimental and numerical study on the prefabricated double L-shaped beam-column joint with triangular stiffener . | JOURNAL OF BUILDING ENGINEERING , 2023 , 69 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
A large stress is produced in the straight-tenon joints of a wooden structure during an earthquake, and this can cause the tenon to pull out and destabilize the timber frame. Therefore, four types of lightweight steel re-inforcements for straight-tenon joints are herein proposed. Seven straight-tenon douglas fir joint specimens include one unreinforced and six reinforced specimens, are subject to low-frequency cyclic loading according to the Chinese specification JGJ/T101-2015. Failure modes, moment-rotation hysteretic curves, skeleton curves, stiffness degradation, strength degradation, energy dissipation capacity, and tenon pulled-out values are ob-tained and discussed. The results indicate that the unreinforced specimens are damaged because of the large tenon pulled-out values and obvious pinching effect of the hysteretic curve. Compared with unreinforced specimens, the final failure modes of all reinforced specimens are changed, hysteretic curves become fuller, peak load increases by more than 10%, initial stiffness increases by more than 25%, and bearing capacity degradation improves significantly; they achieve a good reinforcement effect. The strength and energy dissipation of the specimens increased with an increasing triangular-rib size. An FE model is established, and the FE-predicted results match the test results well. The parametric study results indicate that increasing the size of the tenon and the length of the tapping screw can effectively improve the seismic performance of the specimen.
关键词 ：
Seismic performance Seismic performance Timber structure Timber structure Lightweight steel reinforcement Lightweight steel reinforcement Low-frequency cyclic loading Low-frequency cyclic loading Straight-tenon joint Straight-tenon joint
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| GB/T 7714 | Dong, Hongying , Jin, Yunjian , Cao, Wanlin et al. Seismic performance of wooden straight-tenon joints reinforced with lightweight steel members [J]. | ENGINEERING STRUCTURES , 2023 , 282 . |
| MLA | Dong, Hongying et al. "Seismic performance of wooden straight-tenon joints reinforced with lightweight steel members" . | ENGINEERING STRUCTURES 282 (2023) . |
| APA | Dong, Hongying , Jin, Yunjian , Cao, Wanlin , Liang, Xu , Liu, Siyuan . Seismic performance of wooden straight-tenon joints reinforced with lightweight steel members . | ENGINEERING STRUCTURES , 2023 , 282 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
There is a growing interest in the development of precast structures. In this paper, a semi-precast high-strength recycled aggregate concrete (RAC) column with high-strength reinforcement was studied, which was consisted of cast-in-situ core concrete surrounded by a precast external shell. Six full-scale columns were fabricated and tested under cyclic lateral load, of which two were cast-in-situ columns and four were semi-precast columns. The penetration of shear reinforcement between precast external shell and cast-in-situ core column, core column diameter and axial load were the major design parameters. The test results showed that all specimens exhibited a good deformation capacity with an ultimate drift ratio greater than 3%. The semi-precast columns had comparable seismic performance with the cast-in-situ columns, indicating that the penetrating shear reinforcement and the core column diameter had little effect on the seismic performance. The core column diameter could be selected according to the practical engineering requirements. Increasing the axial load can significantly improve the lateral load-carrying capacity of the specimens, but would result in larger residual drift ratio, which was adverse to the repairability of the specimens. The flexural deformation and the deformation resulting from slippage of longitudinal reinforcement in the concrete foundation accounted for 50%-80% and 10%-20% of the lateral displacement, respectively, which should not be ignored in the deformation calculation; however, the shear deformation can be ignored. The optimized models applicable to calculate the F-Delta curves of semi-precast high-strength RAC columns with high-strength reinforcement were proposed. Parametric analysis based on the optimized models was carried out to develop N-M curves for various precast external shell or core column concrete strength, and core column diameters.
关键词 ：
Fiber-based method model Fiber-based method model High-strength recycled aggregate concrete High-strength recycled aggregate concrete High-strength reinforcement High-strength reinforcement Seismic behavior Seismic behavior Semi-precast column Semi-precast column
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| GB/T 7714 | Zhang, Jianwei , Tao, Xinyi , Liu, Juan et al. Seismic performance of semi-precast high-strength recycled aggregate concrete columns with high-strength reinforcement [J]. | JOURNAL OF BUILDING ENGINEERING , 2022 , 45 . |
| MLA | Zhang, Jianwei et al. "Seismic performance of semi-precast high-strength recycled aggregate concrete columns with high-strength reinforcement" . | JOURNAL OF BUILDING ENGINEERING 45 (2022) . |
| APA | Zhang, Jianwei , Tao, Xinyi , Liu, Juan , Dong, Hongying , Cao, Wanlin . Seismic performance of semi-precast high-strength recycled aggregate concrete columns with high-strength reinforcement . | JOURNAL OF BUILDING ENGINEERING , 2022 , 45 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
A prefabricated structure composed of a lightweight concrete filled steel tube (CFST) frame and an embedded steel plate (ESP) composite wall is proposed, known as a CFST frame-ESP composite wall. To study the seismic performance of the prefabricated structure, low reversed cyclic loading tests of six full-scale specimens were performed, including five CFST frame-ESP composite walls with different wall details and one bare frame. The failure characteristics, hysteretic characteristics, bearing capacity, stiffness degradation, and energy dissipation capacity of the specimens were compared, and a simplified model was used for the ESP composite wall. Based on OpenSees finite element software, finite element simulation and parameter analysis were performed using a simplified model. The calculated results agree well with the experimental results. The results show that the ESP composite wall can improve the bearing capacity, initial stiffness, and energy dissipation capacity of the CFST frame significantly. The use of a rebar brace decreased the concrete damage and increased the ultimate bearing capacity, initial stiffness, and energy dissipation capacity of the ESP composite wall. The mechanical characteristics of the EPS composite wall is considered in the simplified model. The modeling method presented herein can be used to analyze the abovementioned type of structure.
关键词 ：
Experimental study Experimental study Numerical simulation Numerical simulation Embedded steel plate composite wall Embedded steel plate composite wall Lightweight CFST frame Lightweight CFST frame Prefabricated structure Prefabricated structure
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| GB/T 7714 | Bian, Jinliang , Cao, Wanlin , Qiao, Qiyun et al. Experimental and numerical studies of prefabricated structures using CFST frame and composite wall [J]. | JOURNAL OF BUILDING ENGINEERING , 2022 , 48 . |
| MLA | Bian, Jinliang et al. "Experimental and numerical studies of prefabricated structures using CFST frame and composite wall" . | JOURNAL OF BUILDING ENGINEERING 48 (2022) . |
| APA | Bian, Jinliang , Cao, Wanlin , Qiao, Qiyun , Zhang, Jianwei . Experimental and numerical studies of prefabricated structures using CFST frame and composite wall . | JOURNAL OF BUILDING ENGINEERING , 2022 , 48 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
本发明公开了一种钢框架装配式轻钢组合桁架承托钢丝网架砂浆‑珍珠岩‑聚苯复合围护墙及作法，涉及装配式钢结构工程技术领域。包括：钢丝网砂浆‑珍珠岩面层，为钢丝网砂浆层和珍珠岩防火层；轻钢组合桁架，为钢丝网砂浆层、断桥自攻钉连接件、钢管混凝土柱构成的桁架；承重钢丝网架，水平腹丝及斜向上的腹丝的外端点焊外钢丝网并点焊内钢筋网，并在内混凝土砂浆层中锚固；钢管混凝土柱复合墙段自攻钉集块连接构造，为焊接在钢管上的L形连接钢板与焊接在墙段内混凝土砂浆层的钢筋网上的传力钢板通过自攻钉连接的构造；内隔板式π形连接件梁柱连接节点构造，为H型钢梁与钢管混凝土柱的连接构造。本发明具有良好的防火、防水、隔热及受力性能。
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| GB/T 7714 | 曹万林 , 杨兆源 , 张建伟 et al. 钢框架装配式轻钢组合桁架承托钢丝网架砂浆-珍珠岩-聚苯复合围护墙及作法 : CN202211691947.2[P]. | 2022-12-27 . |
| MLA | 曹万林 et al. "钢框架装配式轻钢组合桁架承托钢丝网架砂浆-珍珠岩-聚苯复合围护墙及作法" : CN202211691947.2. | 2022-12-27 . |
| APA | 曹万林 , 杨兆源 , 张建伟 , 王小娟 . 钢框架装配式轻钢组合桁架承托钢丝网架砂浆-珍珠岩-聚苯复合围护墙及作法 : CN202211691947.2. | 2022-12-27 . |
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摘要 ：
本实用新型公开了一种装配式轻钢带空腹钢筋桁架混凝土条带叠合双向楼板，涉及装配式建筑结构工程技术领域。包括内置混凝土底板钢筋网的混凝土底板、内置混凝土条带梯格钢筋和混凝土条带受压钢筋的横向混凝土条带与纵向混凝土条带、钢筋桁架、内置叠合层钢筋网的叠合层后浇混凝土、由横向轻型方钢和纵向轻型矩形钢管组成的轻型钢架抗弯增强构造，其中，混凝土底板钢筋网与钢筋桁架焊接连接，叠合层后浇混凝土将混凝土底板与两个混凝土条带连接成整体，轻型钢架抗弯增强构造通过轻型钢架连接螺栓连接在两个混凝土条带的上面。本实用新型具有装配率高、施工便捷、受力性能好且适用范围广的特点。
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| GB/T 7714 | 曹万林 , 杨兆源 , 张建伟 . 一种装配式轻钢带空腹钢筋桁架混凝土条带叠合双向楼板 : CN202223505263.7[P]. | 2022-12-27 . |
| MLA | 曹万林 et al. "一种装配式轻钢带空腹钢筋桁架混凝土条带叠合双向楼板" : CN202223505263.7. | 2022-12-27 . |
| APA | 曹万林 , 杨兆源 , 张建伟 . 一种装配式轻钢带空腹钢筋桁架混凝土条带叠合双向楼板 : CN202223505263.7. | 2022-12-27 . |
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摘要 ：
本发明公开了不锈钢薄管内置功能可恢复钢构再生混凝土圆截面柱，可用于盐雾环境下建筑柱子的底部区域及桥墩柱。柱子截面外围为焊接环形肋板的薄不锈圆管，不锈圆管腔体内设置钢筋笼，钢筋笼内设置由4根钢管超高强混凝土竖杆和H型钢斜杆焊接而成的空间桁架，仅在空间桁架竖杆钢管底部5倍竖杆直径范围不焊接栓钉，反复地震作用下该范围的竖杆应变近乎相等，钢构桁架竖杆处于变形可恢复的弹性状态，克服了由于柱子底部截面弯矩最大致使该截面钢构桁架竖杆屈服的弊端。带环肋的不锈钢管与钢筋笼对再生混凝土和钢构桁架具有双重约束作用。本发明的柱具有抗氯离子腐蚀、利用生态混凝土、高效受力、震后功能可恢复、耐久性好的综合技术优势。
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| GB/T 7714 | 杨兆源 , 曹万林 , 董宏英 et al. 不锈钢薄管内置功能可恢复钢构再生混凝土圆截面柱 : CN202211669874.7[P]. | 2022-12-25 . |
| MLA | 杨兆源 et al. "不锈钢薄管内置功能可恢复钢构再生混凝土圆截面柱" : CN202211669874.7. | 2022-12-25 . |
| APA | 杨兆源 , 曹万林 , 董宏英 , 张建伟 , 刘亦斌 . 不锈钢薄管内置功能可恢复钢构再生混凝土圆截面柱 : CN202211669874.7. | 2022-12-25 . |
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摘要 ：
本发明公开了短肢剪力墙装配式轻钢组合桁架承托钢丝网架砂浆‑珍珠岩‑聚苯复合围护墙及作法，涉及装配式混凝土建筑结构工程技术领域。主要由钢丝网砂浆‑珍珠岩面层构造、承重钢丝网架、轻钢组合桁架以及装配式短肢混凝土剪力墙组成。本发明克服了短肢剪力墙与窗洞之间的墙段填充轻质墙板重量相对大、保温相对差的弊端，解决了复合填充墙内叶砂浆层内细而密钢筋网与连梁及短肢剪力墙的连接问题，具有良好的受力性能；同时，可有效抵抗长期荷载下窗边框周围砂浆层向下的剪切变形，并将短肢剪力墙外保温构造的重力荷载控制在本层并不向下传递，增强了墙板砂浆面层的整体性，解决了传统保温板拼缝连接问题，提高了墙板防水性能。
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| GB/T 7714 | 曹万林 , 杨兆源 , 董宏英 et al. 短肢剪力墙装配式轻钢组合桁架承托钢丝网架砂浆-珍珠岩-聚苯复合围护墙及作法 : CN202211690887.2[P]. | 2022-12-27 . |
| MLA | 曹万林 et al. "短肢剪力墙装配式轻钢组合桁架承托钢丝网架砂浆-珍珠岩-聚苯复合围护墙及作法" : CN202211690887.2. | 2022-12-27 . |
| APA | 曹万林 , 杨兆源 , 董宏英 , 张建伟 . 短肢剪力墙装配式轻钢组合桁架承托钢丝网架砂浆-珍珠岩-聚苯复合围护墙及作法 : CN202211690887.2. | 2022-12-27 . |
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摘要 ：
本发明公开了装配式一形复合墙板通长传力钢板自攻钉集块连接构造及作法，涉及装配式混凝土建筑工程技术领域。自攻钉集块为带通长传力钢板的内外叶单排钢筋网混凝土薄板，采用自攻钉及其连接钢板连接上、下通长传力钢板的若干板段区域外廓混凝土薄板厚度的内藏钢构混凝土薄墙板区块；自攻钉集块连接构造由自攻钉集块和去除自攻钉集块的接钢板段构成；自攻钉集块抵抗水平地震剪力，同时还可传递竖向重力；对接钢板段主要传递竖向重力，其摩擦力也可抵抗水平地震剪力。本发明实现了多层建筑复合墙板的快速装配施工，具有连接性能、耐久性能、热工性能好且无湿作业的技术优势。
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| GB/T 7714 | 曹万林 , 杨兆源 , 祖凡 et al. 一种装配式一形复合墙板通长传力钢板自攻钉集块连接构造及作法 : CN202210273892.7[P]. | 2022-03-19 . |
| MLA | 曹万林 et al. "一种装配式一形复合墙板通长传力钢板自攻钉集块连接构造及作法" : CN202210273892.7. | 2022-03-19 . |
| APA | 曹万林 , 杨兆源 , 祖凡 , 董宏英 . 一种装配式一形复合墙板通长传力钢板自攻钉集块连接构造及作法 : CN202210273892.7. | 2022-03-19 . |
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