腹板开孔H型钢预埋件受力性能与设计方法研究

胡大柱; 黄子龙; 杨婷

doi:10.3724/j.gyjzG23092814

腹板开孔H型钢预埋件受力性能与设计方法研究

doi: 10.3724/j.gyjzG23092814

1. 上海应用技术大学城市建设与安全工程学院, 上海 201418;
2. 江苏蓝科减震科技有限公司, 江苏盐城 224102

基金项目:

国家自然科学基金青年基金项目（51408361）。

详细信息

作者简介:
胡大柱，工学博士，副教授，主要从事工程结构减震研究。电子信箱： dazhuhu@163.com

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出版历程
- 收稿日期: 2023-09-28
- 网络出版日期: 2026-04-11
- 刊出日期: 2026-03-20

Research on the Mechanical Properties and Design Methods of H-Shaped Embedded Parts with Web Openings

1. School of Urban Construction and Safety Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
2. Jiangsu Lanke Damping Technical Co., Ltd., Yancheng 224102, China

摘要

摘要: 屈曲约束支撑（BRB）作为一种新型消能构件，广泛应用于混凝土结构中。BRB通过预埋件与钢筋混凝土构件连接，因而预埋件是关键传力部位。为提高预埋件承载力，同时又便于工程施工，提出腹板开孔H型钢预埋件，通过弯剪试验和单拉试验探索其破坏模式。试验结果表明：由于弯矩的影响，弯剪埋件的破坏形式为埋件整体绕近加载端转动，从而导致远离转动点位置的腹板条被拉断；而单拉埋件由于混凝土梁抗剪承载力不足，其破坏状态为混凝土梁受剪破坏。基于试验结果，对有限元模型进行校核。通过有限元方法分析了加载点高度、腹板深度、腹板厚度以及锚板厚度对预埋件力学性能的影响。参数分析结果表明：弯矩增大使得预埋件承载力减小，而增大腹板高度和厚度可以有效提升预埋件的承载力，锚板厚度对承载力贡献较小。基于试验结果及有限元分析，结合现行规范，提出了腹板开孔H型钢预埋件承载力计算方法。
- 屈曲约束支撑 /
- 预埋件 /
- 有限元分析 /
- 承载力
Abstract: As a new type of energy dissipation member， buckling-restrained braces （BRB） have been widely used in concrete structures. BRBs are connected with reinforced concrete members by embedded parts， which are the key force transmission components. In order to improve the bearing capacity of the embedded parts and facilitate construction， H-shaped steel embedded parts with web openings are proposed. The failure mode was explored through bending-shear tests and tensile tests. The test results showed that， due to the influence of bending moment， the failure mode of the bending-shear embedded parts involved the embedded part rotating as a whole around the loading end. This rotation caused the web strip far from the rotation point to fracture. Due to the insufficient shear capacity of the concrete beams， the failure mode of the tension embedded parts was shear failure of the concrete beams. Based on the test results， the finite element model was validated. The effects of loading point height， web depth， thickness， and anchor plate thickness on the mechanical properties of the embedded parts were analyzed using the finite element method. The results of the parametric analysis showed that an increase in bending moment reduced the bearing capacity of the embedded parts， while an increase in web height and thickness effectively improved the bearing capacity of the embedded parts； the anchor plate thickness， however， contributed little to the bearing capacity. Based on the test results and finite element analysis， combined with current specifications， a calculation method for the bearing capacity of H-shaped steel embedded parts with web openings was proposed.
- buckling-restrained brace /
- embedded parts /
- finite element analysis /
- bearing capacity

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参考文献(20)

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