考虑刚度匹配的BRB屈服力取值方法

兰州理工大学学报 ›› 2025, Vol. 51 ›› Issue (5): 136-142.

考虑刚度匹配的BRB屈服力取值方法

陈云^*1,2,4, 孙飞飞¹, 呼峰³, 魏瑶²

1.同济大学土木工程学院, 上海 200092;
2.上海蓝科建筑减震科技股份有限公司, 上海 200433;
3.中南建筑设计院股份有限公司, 湖北武汉 430071;
4.南通蓝科减震科技有限公司, 江苏南通 226000

收稿日期:2022-09-04 发布日期:2025-10-25
通讯作者: 陈云(1989-),男,安徽安庆人,工程师. Email:314650842@qq.com
基金资助:
国家自然科学基金(51778488)

BRB yield force value method considering stiffness matching

CHEN Yun^1,2,4, SUN Fei-fei¹, HU Feng³, WEI Yao²

1. College of Civil Engineering, Tongji University, Shanghai 200092;
2. Shanghai LANKE Building Damping Technology Co. Ltd., Shanghai 200433, China;
3. Central-South Architectural Design Institute Co. Ltd., Wuhan 430071, China;
4. Nantong LANKE Damping Technology Co. Ltd., Nantong 226000, China

Received:2022-09-04 Published:2025-10-25

摘要/Abstract

摘要： 针对BRB等效刚度与系统串联刚度难以匹配的问题,通过引入构件长度与轴线长度的比值(长度比),提出BRB屈服力的计算方法.基于等代支撑简化算法的不足,分析了影响刚度匹配的关键因素;根据修正的平行力法分析了长度比与支撑夹角、轴线长度、屈服力等参数的关系,进而拟合了计算公式和给出了实际工程中的参考范围;推导了基于长度比的BRB屈服力取值方法,并分析了不同屈服力取值对刚度误差的影响.研究表明:修正平行力法计算简便、结果合理;长度比、屈服力和系统刚度三者相互关联,屈服力取值过小时,随着屈服力的减小刚度误差增加,取值过大时,随着屈服力的增加刚度误差增加.基于长度比的BRB屈服力取值方法可有效匹配等效刚度,实现产品设计与工程应用的统一协调,建议在BRB项目设计时予以参考.

关键词: 等效刚度, BRB, 修正的平行力法, 屈服力, 长度比

Abstract: In order to solve the problem that the equivalent stiffness of BRB is difficult to match the serial stiffness of its system, a calculation method of BRB yield force is proposed by introducing the ratio of member length to axis length (length ratio). Based on the deficiency of the simplified algorithm of equivalent bracing, the key factors affecting the stiffness matching are analyzed; According to the modified parallel force method, the relationship between the length ratio and the support angle, axis length, yield force and other parameters is analyzed, and then the calculation formula is fitted and the reference range in practical engineering is given; The method of BRB yield force based on length ratio is deduced, and the influence of different yield force values on stiffness error is analyzed. The results show that the modified parallel force method is simple and reasonable; The length ratio, yield force and system stiffness are interrelated. If the yield force is too small, the stiffness error increases with the reduction of the yield force. If the value is too large, the stiffness error increases with the increase of the yield force. The BRB yield force value taking method based on the length ratio can effectively match the equivalent stiffness and achieve the unified coordination between product design and engineering application. It is suggested that the BRB project design should be referred to.

Key words: equivalent stiffness, BRB, modified parallel force method, yield force, length ratio

中图分类号:

TU375.4

陈云, 孙飞飞, 呼峰, 魏瑶. 考虑刚度匹配的BRB屈服力取值方法[J]. 兰州理工大学学报, 2025, 51(5): 136-142.

CHEN Yun, SUN Fei-fei, HU Feng, WEI Yao. BRB yield force value method considering stiffness matching[J]. Journal of Lanzhou University of Technology, 2025, 51(5): 136-142.

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