鋼結構法蘭螺栓連接節點抗震性能試驗研究*
  • 作者: 陳艷丹,文華,孫新坡,等
論文摘要

 

鋼結構法蘭螺栓連接節點抗震性能試驗研究*

陳艷丹1,文華2,孫新坡1,陳陽國3,程倩1

(1.四川輕化工大學土木工程學院,四川 自貢 643000; 2.西南科技大學土木工程與建筑學院,四川 綿陽 621010;3.成都建筑材料工業設計研究院有限公司,四川 成都 610051)

[摘要]裝配式鋼結構法蘭盤組合節點作為一種新型鋼結構梁柱螺栓連接節點,具有良好的施工性能及可替換等特點。以法蘭盤厚度和長度為試驗變量,對41∶2縮尺模型節點進行了擬靜力加載試驗。對比各節點的變形和破壞過程,探討了不同設計參數節點的滯回曲線、承載力、能量消散、延性及剛度退化等。試驗及分析結果表明:節點的失效模式以法蘭盤外環板鼓屈為主,破壞集中在梁端塑性鉸區內,滿足強柱弱梁的設計理念。法蘭盤組合節點具有良好的承載力、轉動能力及耗能能力;增加法蘭盤剛度和長度能明顯提高節點整體抗震性能影能力。

[關鍵詞]鋼結構;梁柱節點;法蘭螺栓;擬靜力試驗;抗震性能

[中圖分類號]TU391        [文獻標識碼]A        [文章編號]2097-0897(2021)23-0126-06

Experimental Study on Seismic Behavior of Bolted Flange Connections in Steel Structures

CHEN Yandan1, WEN Hua2, SUN Xinpo1, CHEN Yangguo3, CHENG Qian1

(1.College of Civil Engineering, Sichuan Light Chemical University, Zigong,Sichuan 643000, China;2.College of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang,Sichuan 621010, China;3.Chengdu Design & Research Institute of Building Materials Industry Co.,Ltd.,Chengdu,Sichuan 610051, China)

Abstract:The assembled steel structure flange combination node, as a new type of steel structure beam-column bolted node, has the characteristics of good construction performance and replaceability. The proposed static load test is conducted on four 1∶2 scale model nodes with flange thickness and length as test variables. The hysteresis curves, bearing capacity, energy dissipation, ductility and stiffness degradation of the nodes with different design parameters are discussed. The test and analysis results show that the failure mode of the nodes is mainly the buckling of the outer ring plate of the flange, and the damage is concentrated in the plastic hinge area of the beam end, which satisfies the design concept of “strong column but weak beam”. The flange combination node has good bearing capacity, rotational capacity and energy consumption capacity. Increasing the flange stiffness and length can significantly improve the overall seismic performance of the nodes.

Keywords: steel structures;beam-column nodes;flange bolting;proposed static tests;seismic performance

*國家科技重大專項課題 (2016ZX05040006-001-011);國家自然科學基金(51108393) 

[作者簡介]陳艷丹,碩士,助教,Email375918408@qq.com

[通信作者]文華,博士,教授,Email47702099@qq.com

 

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