884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（1 中船第九設(shè)計(jì)研究院工程有限公司， 上海 200063；

 2 同濟(jì)大學(xué)結(jié)構(gòu)工程與防災(zāi)研究所， 上海 200092）

［摘要］為了測(cè)試轉(zhuǎn)換鋼桁架節(jié)點(diǎn)的耗能性能，對(duì)上海長(zhǎng)寧來福士轉(zhuǎn)換鋼桁架2個(gè)典型節(jié)點(diǎn)進(jìn)行了滯回性能試驗(yàn)研究。通過分析節(jié)點(diǎn)的承載力、延性比和能量耗散系數(shù)，對(duì)此種節(jié)點(diǎn)的受力特點(diǎn)及破壞模式進(jìn)行了深入的探討。試驗(yàn)表明：節(jié)點(diǎn)的最終破壞模式為中柱與弦桿翼緣交界處發(fā)生剪切破壞，同時(shí)伴隨著混凝土的拉裂。加載過程中，節(jié)點(diǎn)剛度退化比較明顯，節(jié)點(diǎn)在最大剪切應(yīng)變達(dá)到峰值后發(fā)生剪切破壞；彈性階段時(shí)，等效黏滯阻尼系數(shù)較小，隨著塑性的發(fā)展，等效黏滯阻尼系數(shù)逐漸增加，最終分別穩(wěn)定在0.4和0.27左右，節(jié)點(diǎn)具有良好的耗能能力。

［關(guān)鍵詞］轉(zhuǎn)換桁架； 擬靜力試驗(yàn)； 滯回曲線； 耗能性能

中圖分類號(hào)： TU393 文獻(xiàn)標(biāo)識(shí)碼： A文章編號(hào)：  1002-848X(2016)S1-0542-06

Research on the hysteretic behavior of transfer truss joint in Shanghai Changning Raffles City

Wang Fei1, Yang Yimeng1, Wu Jing1, Zhang Shiyu2, Zhou Ying2

(1 China Shipbuilding NDRI Engineering Co., Ltd., Shanghai 200063, China;

2 State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)

Abstract: In order to test the dissipation capacity of transfer truss joint, the research of hysteretic behavior of transfer truss joint in Shanghai Changning Raffles City was carried out. The mechanical performance and failure mode was discussed by analyzing the bearing capacity, ductility ratio and energy dissipation factor of the joint. The test indicated that: the final failure mode is the shear failure on the interface between the middle column and chord flange, accompanying the crack of the concrete. In the loading process, the rigidity degeneration was obvious. Shear failure occurred when the maximum shear strain reached the peak value. In the elastic stage, the equivalent viscous damping coefficient is small, with the development of plasticity, the coefficient was increased gradually. In the last stage, the coefficient achieved stably at 0.4 and 0.27. The test indicated that the joint has a good performance of energy dissipation.

Keywords: transfer truss; pseudo static test; hysteretic curve; energy-dissipating capacity

作者簡(jiǎn)介：王飛，博士，高級(jí)工程師, Email：flywang007@126.com。