Zhejiang Yuegong Steel Structure Co., Ltd.’s “Steel‑frame residential system featuring through‑bolted multi‑chamber steel‑tube concrete seismic walls” has been evaluated as achieving an internationally advanced level of scientific and technological achievement.

Release Date:

2019-11-19 17:02

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2019 On November 16, the “Through-Bolt Multi-Cavity Steel Tube Concrete Seismic Wall Steel Structure Residential System” (hereinafter referred to as the Bolt–Tube Concrete System), developed by Zhejiang Yuegong Steel Structure Co., Ltd., a wholly owned subsidiary of Yuegong Group, successfully passed expert appraisal, with its scientific and technological achievements reaching an internationally advanced level.

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Expert members of the appraisal committee

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R&D Team and Company Leadership

This scientific and technological achievement appraisal meeting was organized by the Zhejiang Provincial Technology Broker Association. The appraisal committee comprised renowned experts and scholars, including Wang Lijun, Chief Expert of Huacheng Boyuan Engineering Technology Group and a National Master of Survey and Design; Professor Guo Yanlin of Tsinghua University; Yu Yinquan, Chief Engineer of the China Academy of Building Research and a National Master of Survey and Design; Fang Xiaodan, Chief Engineer of the Architectural Design Institute of South China University of Technology and a National Master of Survey and Design; Yang Xuelin, Chief Engineer of the Zhejiang Provincial Architectural Design Institute; Xiao Zhibin, Chief Engineer of the Zhejiang University Architectural Design Institute; and Xing Guoran, Chief Engineer of Zhejiang Zhongcheng Construction Group, among others. Key leaders of Yuegong Holding Group, along with Professor Tong Genshu of Zhejiang University, Dr. Wang Yanchao and Dr. Fu Bo from the Timoshenko Structural Engineering Design Office, also attended. Luo Yinchang, Chairman of Zhejiang Yuegong Steel Structure Co., Ltd., General Manager Hua Yuwu, Deputy General Manager Chen Jian (in charge of green building), Green Building Department Manager Jin Feng, and other key R&D personnel attended the meeting. Also in attendance were guests including Lou Bing and Jin Jian, leaders of the Zhejiang Steel Structure Industry Association, as well as Zhang Yu, Chairman of the Shaoxing Alliance for the Development of Building Industrialization.

Members of the appraisal committee

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The expert panel of the appraisal committee heard presentations on the technical summary, component testing, and prior‑art searches related to the “bolt–tube concrete system,” reviewed the relevant sample documentation, and, following thorough questioning and deliberation, unanimously concluded that the system is easy to fabricate and highly amenable to prefabrication. Furthermore, the seismic wall components—composed of standardized elements such as through‑bolts, cold‑formed channel sections, and steel tubes—give rise to a novel steel‑plate composite seismic wall system. In its final assessment, the committee determined that the research outcomes have reached an internationally advanced level and approved the system for acceptance.

[Introduction to the Bolt–Pipe Concrete System]

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Zhejiang Yuegong Steel Structure Co., Ltd. has appointed Professor Tong Genshu of Zhejiang University as its Chief Technical Advisor and entered into a long-term strategic cooperation agreement with the Timoshenko Architectural Design Firm. Collaborating with the firm’s distinguished team of doctoral experts—boasting extensive experience in engineering design and research & development—the company has successfully developed an earthquake‑resistant wall‑type residential system featuring multi‑cavity steel‑tube concrete and through‑bolts, which is protected by proprietary intellectual property rights (hereinafter referred to as the Bolt–Tube Concrete System). This system offers flexible architectural layouts, comfortable interior spaces, well‑defined structural load paths, superior component performance, straightforward steel‑structure fabrication, and a high degree of standardization, making it ideally suited for mid‑rise and high‑rise steel‑frame residential buildings.

This system relies on a composite seismic wall composed of steel‑concrete connections, steel columns, steel beams, and prefabricated reinforced steel deck slabs to jointly resist vertical loads and lateral seismic forces. The envelope system comprises prefabricated interior partition walls, prefabricated insulated exterior walls, fire‑resistant thermal insulation layers, and exterior wall coatings. In addition, a prefabricated MEP (mechanical, electrical, and plumbing) system and a prefabricated interior finishing system are integrated to form a complete prefabricated steel‑frame residential product.

The core technology of this system—the bolt–tube concrete seismic wall—consists of cold‑formed steel tubes, cold‑formed channel sections, connecting bolts, and corner square steel tubes. Two cold‑formed channel sections are positioned with their openings facing each other and are joined by spaced, through‑bolts to form a pair; these pairs are alternately arranged with cold‑formed steel tubes, creating a linear, multi‑chamber steel‑tube wall. Depending on the component’s location and the wall’s orientation, corner square steel tubes can be used to generate cross‑sections of various shapes, such as L‑shaped, T‑shaped, or cruciform. After the cavities are filled with concrete, the resulting structure is the bolt–tube concrete seismic wall.

Chen Bailiang, Chairman of the Board of Zhejiang Company and the Group, was awarded the honors of “Outstanding Contributing Enterprise” and “Meritorious Figure” by the China Association for Metal Structure Construction.

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