Mechanical property of U-Shaped 65Mn steel bumpers for seismic base isolation

被引：7

作者：

Han Miao ^{[1
]}

Wang Yuandong ^{[2
]}

Du Hongkai ^{[1
,4
]}

Cui Xiangdong ^{[3
]}

机构：

[1] Beijing Univ Civil Engn & Architecture, Beijing 102612, Peoples R China

[2] BHB Consulting Engineers, Salt Lake City, UT 84115 USA

[3] Jining Huiyuan Huazhu Architectural Design Co Ltd, Jining 272000, Peoples R China

[4] Univ Utah, Salt Lake City, UT 84112 USA

来源：

EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION | 2021年 / 20卷 / 03期

基金：

中国国家自然科学基金;

关键词：

U-shaped bumper; base isolation; experimental; mechanical properties; analytical model; IMPACT MODEL; PERFORMANCE; SIMULATION; BUILDINGS; DAMPERS; BRIDGES;

D O I：

10.1007/s11803-021-2052-5

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study proposes a novel U-shaped 65Mn steel bumper as the displacement restraining device for base-isolated structures with laminated elastomeric rubber bearings. A series of bumpers with different geometric parameters were designed and tested under monotonic and cyclic quasi-static loading protocols. The experimental results from a total of 232 specimens were analyzed to develop an analytical model to calculate the backbone curve and the maximum elastic restoring force for U-shaped 65Mn bumpers. Thus, the analytical equations to calculate the elastic, hardening, and unloading stiffness of U-shaped 65Mn bumpers, as well as their maximum elastic restoring force, are validated by using an additional ten groups of bumpers with varying radiuses. These analytical equations can accurately predict the mechanical parameters of U-shaped 65Mn steel bumpers for a design purpose.

引用

页码：791 / 802

页数：12

共 28 条

[1]

Aiken I. D., 1989, MECH LOW SHAPE FACTO

[2]

Cui X., 2015, THESIS CHINA BEIJING THESIS CHINA BEIJING

[3] Shape optimization of U-shaped damper for improving its bi-directional performance under cyclic loading [J].

Deng, Kailai ;

Pan, Peng ;

Su, Yukun ;

Xue, Yantao .

ENGINEERING STRUCTURES, 2015, 93 :27-35

[4] Development of crawler steel damper for bridges [J].

Deng, Kailai ;

Pan, Peng ;

Wang, Chaoyi .

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH, 2013, 85 :140-150

[5] Performance of seismic-isolated bridges with and without elastic-gap devices in near-fault zones [J].

Dicleli, Murat .

EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 2008, 37 (06) :935-954

[6]

Du H., 2014, China Civ. Eng. J, V47, P158

[7] Impact and Energy Analysis of Deformation-Limited Base-Isolated Structure in Shaking Table Test [J].

Du, Hongkai ;

Han, Miao .

PROGRESS IN INDUSTRIAL AND CIVIL ENGINEERING III, PT 1, 2014, 638-640 :1811-+

[8]

Guerrein L., 1996, P 11 WORLD C EARTHQ P 11 WORLD C EARTHQ

[9]

Han M., 2006, WORLD INF EARTHQ ENG, V22, P110

[10]

Han M, 1999, BUILD SCI, V15, P14

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