Article
Engineering, Civil
Jian-peng Wei, Li -min Tian, Yang Guo, Hui-yun Qiao, Zhi-an Jiao, Yu Bao
Summary: A bidirectional double-hinge steel column base is proposed to optimize the deformation and load patterns of traditional column bases. The design and cyclic behavior of the double-hinge column base were comprehensively investigated. The results indicate that the double-hinge column base exhibits clear mechanical behavior.
Article
Construction & Building Technology
Chen Yun, Chen Chao
Summary: This study proposes a novel prefabricated self-centering steel frame to address the issues of plastic damage and residual drift in traditional steel frames during earthquakes, with favorable self-centering and energy dissipation capabilities. The performance of the frame was validated through experiments and finite element analyses, demonstrating stable mechanical behavior and good seismic performance under earthquake conditions.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2021)
Article
Engineering, Civil
Yongchao Ma, Ai Qi, Guiyun Yan, Lianqiong Zheng, Panrong Xue, Fei Wang
Summary: Beam-column joint plays a crucial role in precast concrete structures, and this study proposes a novel replaceable steel hinge joint to enhance the seismic performance and earthquake resilience. Experimental results show that the novel joint exhibits improved bearing capacity, energy dissipation capacity, and ductility compared to the traditional monolithic reinforced concrete joint. Damage is mainly concentrated in the steel dampers of the replaceable steel hinge, while the prefabricated column remains elastic without visible cracks.
Article
Engineering, Civil
Yun Chen, Yuanhang Wei, Chao Chen, Ming Zhang
Summary: This paper proposes a resilient rocking steel column base (RRSCB) with composite combination disc spring (CCDS). The restoring force model and energy calculation formulae of the RRSCB are derived through theoretical analyses and validated with cyclic loading tests. A refined finite element model is established to investigate the seismic performance of the RRSCB. The results indicate that the RRSCB has satisfactory self-centering capability and desirable energy dissipation capacity.
JOURNAL OF EARTHQUAKE ENGINEERING
(2023)
Article
Engineering, Civil
Ai-Lin Zhang, Ping Qiu, Zi-Qin Jiang, Ran Li, Xue-Feng Zhang
Summary: The study introduced the earthquake-resilient prefabricated beam-column steel joint with double flange cover plates and designed corresponding specimens, showing that this joint can optimize the overall performance of steel frame structures and be used as a damper in the frame structure system.
Article
Construction & Building Technology
Jinliang Bian, Wanlin Cao, Hongying Dong, Jianwei Chen
Summary: A fabricated structure composed of a CFST frame and an HSF shear wall was proposed to improve the seismic performance of prefabricated frame structures. Through experimental and numerical analyses, it was found that the HSF shear wall significantly enhances the bearing capacity, initial stiffness, and energy dissipation capacity of the CFST frame. Different details of the HSF shear wall have a substantial impact on the seismic performance of the structure.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Geological
Jianxin Zhang, Zonghu Pei, Xian Rong
Summary: In this study, three innovative precast composite interior beam-column joints were proposed for high seismic performance of precast moment-resisting frames. The joints exhibited improved bearing capacity, energy dissipation, and enhanced shear strength. The results also showed that the joint cores maintained their integrity and the beam-column connecting components functioned effectively as force transmission components.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Construction & Building Technology
Cui Tao, Zheng Yun, Bofan Deng
Summary: This paper carries out a pseudo static experiment on the seismic performance of multi-story framed cold-formed thin-walled steel structures with braces. The bearing capacity, ductility, stiffness degradation, and energy dissipation performance of the structures are studied. Finite element analysis is used to simulate the failure process and design suggestions are proposed. The results show that the presence of braces increases the lateral stiffness and bearing capacity of the structures but decreases the ductility. Replacing double angle steel braces with steel plate strip braces improves the seismic performance, with an optimal width thickness ratio of 5.0. Following the design suggestions in this paper can achieve strong structures with weak braces, thus improving the seismic performance of the frames.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2023)
Article
Engineering, Civil
Xiang Li, Jiepeng Liu, Xuhong Zhou, Xuanding Wang, Yohchia Frank Chen
Summary: This study focuses on the seismic behavior of circular tubed reinforced concrete (CTRC) column to reinforced concrete (RC) beam frames for the first time. The experimental results show that both frames are ductile enough to dissipate energy effectively, but more severe damages were observed in the second frame, leading to the instability of the overall frame. A finite-element model and parametric study were conducted to propose preliminary design suggestions on TRC frames.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2022)
Article
Construction & Building Technology
Lihua Chen, Jiandong Feng, Yantao Xue, Chunwang Liang
Summary: This paper presents a novel prefabricated steel-concrete composite beam-column joint, aiming to achieve high ductility and good energy dissipation capacity while improving construction efficiency. Through full-scale fabrication and testing of concrete mid-joints, the effects of wrapped steel tube thickness, reinforcement plate settings, and typical failure modes were studied. Numerical simulation and parameter analysis were conducted to investigate the effects of the wrapped steel tube's extension height, the tensile reinforcement's diameter, and the layout measures.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Jian-peng Wei, Hui-yun Qiao, Yang Guo, Zhai-bang Ke, Yu Bao, Zhi-an Jiao
Summary: This study investigated three earthquake-resilient steel frame joints with different connection forms. The joints were tested via cyclic loading tests, and it was found that the hinged joint had similar test phenomena to the bolted joint. The double-hinge connection in the energy dissipator caused instability after slippage. The bolted joint had the greatest cyclic performance among the three joints. The load-displacement relationships were deduced, and theoretical results agreed with the test results. Finite element analysis was used to analyze the difference in the three connection forms, and it was observed that the release of axial constraint had less effect on the cyclic performance of the joint.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2023)
Article
Engineering, Civil
Aria Ghabussi, Mina Mortazavi, Raghu Betha
Summary: This study focuses on the numerical analysis of curved steel dampers in the hybrid wall panel consisting of cold-formed and hot-rolled squared hollow section frames to improve seismic performance. The results show that the energy dissipation, frame strength, and elastic stiffness are optimal when using a 75 degrees damper with 10 mm thickness and 40 mm depth or a 55 degrees damper with 13 mm thickness and 40 mm depth at the top of the hot-rolled section.
Article
Construction & Building Technology
Jian-peng Wei, Li-min Tian, Yang Guo, Hui-yun Qiao, Zhi-an Jiao, Yu Bao
Summary: This study investigated a double-hinge steel frame joint with a replaceable T-shape energy dissipator through testing and finite element analysis. The seismic performance of the joint was verified to be better than a traditional welded joint, and the accuracy and reliability of the earthquake-resilient design were demonstrated. The energy dissipators had a high energy dissipation efficiency, and the earthquake-resilient function was validated. The low weight of the joint was determined through validated finite element analysis, improving the application of this novel earthquake-resilient joint.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Engineering, Civil
Shurong Li, Huanjun Jiang, Sashi K. Kunnath
Summary: One effective approach to designing a resilient structure following an earthquake is to incorporate reinforced concrete coupled shear walls in the system with replaceable components. A comprehensive evaluation using incremental dynamic analysis was conducted to assess the seismic fragility and collapse safety of buildings with the proposed resilient coupled shear walls. Findings indicate that the system with the new resilient coupled shear wall has a significantly lower probability of collapse compared to buildings with traditional coupled shear walls.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Seyed Javad Mortazavi, Iman Mansouri, Paul O. Awoyera, Jong Wan Hu
Summary: Eccentrically braced frames (EBFs) are commonly used in seismic design for their high elastic stiffness and high ductility. However, their structural stability under fire has not been well documented. This paper presents the application of object-oriented software program development techniques in finite element analysis and fire evaluation, as well as the development of new thermal functional elements in OpenSees software. The results show that EBFs can improve the fire performance of the system.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Huiyun Qiao, Caisong Lu, Jianpeng Wei, Yu Chen
JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES
(2020)
Article
Engineering, Civil
Canwen Chen, Huiyun Qiao, Jinpeng Wang, Yu Chen
ENGINEERING STRUCTURES
(2020)
Article
Engineering, Civil
Shentong Lin, Huiyun Qiao, Jinpeng Wang, Jiahao Shi, Yu Chen
Summary: This paper investigates the anti-collapse performance of moment resisting frames with reduced-web-section connections under critical column removal scenario. Experimental results show that specimens with openings can develop better deformability and rotational capacities when the dimensions and location parameters of the opening are controlled within a suitable range.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Huiyun Qiao, Yu Chen, Jinpeng Wang, Canwen Chen
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2020)
Article
Engineering, Civil
Huiyun Qiao, Jiahui Pan, Yu Chen, Jike Pan
Summary: An experimental investigation was conducted to evaluate the axial compressive behavior of circular hollow section (CHS) stub columns with initial crack defects. The study found that initial cracks accelerated local buckling and changed both the bearing capacity and deformation capacity of the columns. The ultimate loads of the stub columns increased with the tube thickness, slightly decreased with an increase in the long crack length, and decreased with an increase in crack spacing.
THIN-WALLED STRUCTURES
(2021)
Article
Construction & Building Technology
Shentong Lin, Jinpeng Wang, Huiyun Qiao, Yu Chen, Yang Zhou
Summary: This study investigated the impact of different bolt arrangements on the anti-collapse performance of double half-span assemblies, and found that increasing the number of bolt rows is an effective approach to enhancing the connections' resistance to collapse.
JOURNAL OF STRUCTURAL ENGINEERING
(2021)
Article
Engineering, Civil
Huiyun Qiao, Mingfeng Zhang, Zhongcun Liu, Yu Chen, Huasheng Qiu, Zheng Wang
Summary: The research found that initial cracks accelerated local buckling and affected the bearing and deformation capacities of SST columns. The ultimate load of steel tubes increased with an increase in tube thickness and slightly decreased with an increase in crack length. Additionally, the effects of crack number and spacing on bearing capacity were complex and had a coupling relationship with tube thickness.
Article
Engineering, Civil
Huiyun Qiao, Zhuangzhuang Guo, Yu Chen
Summary: This paper presents experimental and numerical investigations of a substructure with castellated steel beams under a column removal scenario. The results provide important insights into improving the resistance of steel structures against progressive collapse.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Huiyun Qiao, Xinyu Xie, Yu Chen
Summary: This study proposes a novel principle of using web openings and kinked reinforced bars to improve the preventive strategies for frame structures. Experimental and numerical investigations evaluate the factors affecting the kinked reinforced bars and their roles in the frame structures. The results indicate the importance of kinked reinforced bars in catenary action and suggest selecting the kinked height based on the deformation capacity of the beam.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Shentong Lin, Xiaolei Xue, Huiyun Qiao, Yu Chen
Summary: In this study, a link element model incorporating a nonlinear PVM yield function was established to investigate the static response of idealized beams with reduced web section under column loss. The model can predict the load-displacement relationship before failure and analyze the internal force evolution of web opening beams.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Construction & Building Technology
Huiyun Qiao, Jian Xia, Yu Chen, Canwen Chen, Juhuan Zheng
Summary: A novel principle is proposed to improve the performance of RBS connections by installing kinked reinforced bars. Experimental and numerical investigations show that the kinked reinforced bars can be effective in RBS connections, and their performance can be adjusted based on the diameter, kinked height, and length of the reinforced bars.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Construction & Building Technology
Jian-peng Wei, Li-min Tian, Yang Guo, Hui-yun Qiao, Zhi-an Jiao, Yu Bao
Summary: This study investigated a double-hinge steel frame joint with a replaceable T-shape energy dissipator through testing and finite element analysis. The seismic performance of the joint was verified to be better than a traditional welded joint, and the accuracy and reliability of the earthquake-resilient design were demonstrated. The energy dissipators had a high energy dissipation efficiency, and the earthquake-resilient function was validated. The low weight of the joint was determined through validated finite element analysis, improving the application of this novel earthquake-resilient joint.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Engineering, Civil
Han Zheng, Huiyun Qiao, Yu Chen, Bo Yang, Bin Zhu, Lifang Lai
Summary: This paper investigates the resistance to progressive collapse of weakened beam-column joints through experiments and numerical simulations on cellular joints with different opening shapes. The results show that the load carrying capacity and deformation capacity of cellular joints have different degrees of improvement compared to traditional joints, with hexagonal openings exhibiting the best performance. Changing the opening weakening parameters can effectively improve the failure mode and load carrying capacity of the specimens. It is recommended to increase the values of parameters a and c and reduce the value of parameter b in the design of collapse resistance.
Article
Engineering, Civil
Huiyun Qiao, Xinyu Xie, Juhuan Zheng, Zhiquan Xing, Yu Chen, Jianpeng Wei
Summary: This study developed a new principle of beam-to-column connections, which improved the ductility of the structure and enhanced the seismic performance of steel-frame structures by arranging openings at the beam flange to form a flange-opening section (FO).
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Jingzhe Li, Qihan Shen, Jingfeng Wang, Fengqin Wang, Guoqiang Li
Summary: This study investigates the effectiveness of externally bonding carbon-FRP for strengthening concrete-filled steel tube short columns with void defects. It proposes strength prediction formulas and provides insights into the strengthening mechanisms.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Tianyao Liu, Xudong Qian, Wei Wang, Yiyi Chen
Summary: This article translates the ductile tearing process of welded joints made from circular hollow sections into the load resistance and strain levels, providing an interface between fracture-mechanics based assessments and engineering analysis and monitoring.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Review
Construction & Building Technology
Zhen Zhu, Yuliang Chen, Huiqin Wu, Peihuan Ye
Summary: This study investigated the shear capacity of solid-web H-shaped steel reinforced concrete (HSRC) columns under combined torque. Seven HSRC columns were tested, and the influence of different parameters on the shear capacity was analyzed. The results showed that the addition of H-shaped steel improved the shear capacity, while increasing the axial compression ratio increased the shear capacity. However, increasing the torsion bend ratio and shear span ratio decreased the shear capacity.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Naizhou Zhang, Huatian Zhao, Lianjin Bao, Feng Zhou, Xiaoming Chen, Sheng Jiang, Gang Shi
Summary: This study focuses on the mechanical properties of butt welds in thick GJ steel plates and analyzes the differences between the weld specimens and the base metals in terms of static and cyclic mechanical properties.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Xianzhong Zhao, Zhenyu Xu, Shen Yan
Summary: This study aims to reveal the mechanisms that determine the survival of suspended domes when subjected to sudden cable rupture. The results show that the remaining structure can arrest the initial local damage and establish an alternative path for hoop cables, thereby regaining balance. The relaxation of hoop cables can transmit outwards and inwards, causing severe damage and potential structural collapse. The failure of diagonal cables has minimal impact on the structure.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Kathleen Lauwens, Barbara Rossi
Summary: This paper presents an experimental program that tests the behavior of fabricated stainless steel beams under combined bending and torsion. The test results are compared to elastic theory and highlight the overly conservative nature of current design rules.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Sima Abolghasemi, Nicholas E. Wierschem, Mark D. Denavit
Summary: Structures susceptible to soft story mechanisms are particularly vulnerable to earthquakes. The strongback has been proposed as a way to prevent soft story mechanisms, but its impact on structural performance considering vertical stiffness irregularities and different arrangements of energy dissipation devices is unclear. This study investigates the effects of strongback on a small-scale four-story elastic structure with varying stiffness irregularities and damper arrangements. The results show that the strongback significantly reduces maximum story drift and makes the structural performance insensitive to damper position and distribution.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Tran-Van Han, Jeong MoonSook, YongNam Kim, Dongkyu Lee, Nguyen-Vu Luat, Kihak Lee
Summary: This paper presents a new approach for steel modular structures, incorporating the S-CN connector and rectangular hollow section (RHS) steel members. The mechanical behavior of S-CN connectors and their application in beam-column connections under compressive loading are studied numerically and validated experimentally.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Yong-li Tao, Xue-chun Liu, Xuesen Chen, Wen -bin Cui, Long-xin Guo
Summary: In this study, different weld details were proposed to improve the seismic performance of steel column splicing flange joints. Four full-scale specimens were tested under cyclic loads to analyze the hysteresis behaviors, yield moment, ductility, bolt forces, energy dissipation, stress and strains. Parametric analysis was conducted to discuss the influences of weld details, weld geometries, and flange openings. The results showed that different weld details had advantages in terms of ductility or energy dissipation capacity, bolt tension distribution, stress or strain distributions. Formulas for yield moments were proposed and validated for seismic design of bolted flange joints in prefabricated steel structures.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Wanqian Wang, Jingfeng Wang, Xiao Peng, Lei Guo
Summary: This paper investigates the overall response of the lightweight EPS-filled cold-formed steel (CFS) shear wall structure to earthquake disasters. A simplified analysis model is established using a strut and tie-equivalent spring model. Nonlinear analysis is conducted to assess the seismic resilience of this type of residence. The research findings provide important guidance for the nonlinear analysis and seismic resilience assessment of this kind of building.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Hui Zhao, Zhenhe Wang, Wenhao Zhang, Rui Wang, Dongdong Yang, Dennis Lam
Summary: In this study, the post-fire performance of round-ended recycled aggregate concrete-filled steel tubular (RE-RACFST) short columns was investigated through experiments and numerical simulations. The results showed that an increase in the recycled aggregate content led to a decrease in the bearing capacity and elastic stiffness of the RE-RACFSTs, as well as an earlier onset of the confining effect. Finite element models were also established and used to study the effects of key factors on the residual load-carrying capacity. Furthermore, a simplified formula was proposed to estimate the post-fire residual capacity of RERACFST stub columns.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Chengjun Tan, Tao Sun, Hua Zhao, Lei Tu, Dongqin Qiao, Xudong Shao
Summary: By combining UHPC layer with steel plates and RC structures, the proposed strengthening method effectively enhances the shear capacity of pre-damaged RC beams. The experimental results demonstrate promising applications for strengthening old/defective bridges.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Shujun Hu, Yuan Liao, Sizhi Zeng, Hai Huang, Yujie Yu
Summary: In this study, a new cross-section-type shear connector connection was proposed to improve the shear resistance in a prefabricated concrete frame-eccentrically steel brace structure. Experimental tests and numerical simulations were conducted, revealing that increasing the concrete strength, connector number, and connector section dimensions can enhance the shear stiffness and strength.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Yong Wang, Yong Du, Shaojun Zhu, Lei Huang
Summary: This study investigated the influence of temperature on the anti-sliding performance of prestressed parallel wire strand clamps (PWSCs) through experiments and numerical analyses. The study found that the anti-sliding resistance of the clamps decreases at high temperatures, the fire resistance time decreases with higher thrusting load levels, and the bolt pretension also decreases.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)
Article
Construction & Building Technology
Hongbo Liu, Yixiao Zhou, Fei Wang, Yan Lu, Zhihua Chen
Summary: This study investigates the effects of low temperature and corrosion on the impact toughness of steel structures. It is found that both low temperature and corrosion can reduce the impact energy of the steel, with corrosion having a greater impact at low temperature.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2024)