NSTS管幕结构横向连接方法试验研究

doi:10.12068/j.issn.1005-3026.2019.07.021

东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (7): 1028-1033.DOI: 10.12068/j.issn.1005-3026.2019.07.021

NSTS管幕结构横向连接方法试验研究

李雪，王连广，杨佳

(东北大学资源与土木工程学院，辽宁沈阳110819)

收稿日期:2018-06-13 修回日期:2018-06-13 出版日期:2019-07-15 发布日期:2019-07-16
通讯作者: 李雪
作者简介:李雪(1991-)，女，辽宁阜新人，东北大学博士研究生；王连广(1964-)，男，辽宁鞍山人，东北大学教授，博士生导师.
基金资助:
中央高校基本科研业务费专项资金资助项目(N170106006)；辽宁省自然科学基金资助项目(20170540303，20170540304).

Experimental Study on Transverse Connection Method of the NSTS Structure

LI Xue， WANG Lian-guang， YANG Jia

School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Received:2018-06-13 Revised:2018-06-13 Online:2019-07-15 Published:2019-07-16
Contact: WANG Lian-guang
About author:-
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摘要/Abstract

摘要： 提出一种基于钢管连接的NSTS(new steel tube slab)管幕结构，在纵向大钢管之间横向布置连接小钢管，浇筑混凝土后形成纵横向复合钢管混凝土整体结构，以解决现有管幕结构施工难度大、横向刚度及承载力低等缺点.通过试验研究不同钢管连接方式对NSTS构件受力性能的影响.结果表明，采用螺栓+T型钢板连接及采用螺栓连接的试件与仅采用T型钢板连接的试件相比，承载力分别提高58.4%，51.2%，刚度分别提高123.3%，97.5%，螺栓+T型钢板的连接方法对NSTS构件的受力性能最为有利;混凝土强度等级对试件的刚度和变形影响较大，对承载力影响不明显.

关键词: NSTS结构, 钢管混凝土, 连接方法, 受力性能, 试验研究

Abstract: A new steel tube slab(NSTS) structure using small-sized steel tubes as transverse connections was presented in order to ease the construction difficulty and enhance the transverse stiffness and the bearing capacity of the NSTS. Small-sized steel tubes were arranged between the longitudinal steel tubes in transverse direction， forming a composite structure of concrete-filled steel tube after concreting the longitudinal and transverse steel tubes. The connection methods between the transverse tube and the longitudinal tube were studied by analyzing the mechanical behavior of NSTS members. The results indicate that the bearing capacity of the specimen connected by bolts+T-shaped steel plate， and only by bolts is increased by 58.4% and 51.2% respectively， compared with that connected only by T-shaped steel plate， and the stiffness is increased by 123.3% and 97.5%， respectively. The connection method of bolts+T-shaped steel plate is most favorable to the mechanical behavior of the NSTS members. The concrete strength affects the stiffness and deflection of the specimen， but has little impact on the bearing capacity.

Key words: NSTS structure, concrete-filled steel tube, connection method, mechanical behavior, experimental study

中图分类号:

TU317⁺.1

李雪，王连广，杨佳. NSTS管幕结构横向连接方法试验研究[J]. 东北大学学报:自然科学版, 2019, 40(7): 1028-1033.

LI Xue， WANG Lian-guang， YANG Jia. Experimental Study on Transverse Connection Method of the NSTS Structure[J]. Journal of Northeastern University Natural Science, 2019, 40(7): 1028-1033.

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NSTS管幕结构横向连接方法试验研究

Experimental Study on Transverse Connection Method of the NSTS Structure

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