کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10126939 1645007 2018 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental investigations of vertical post-tensioned connection for modular steel structures
ترجمه فارسی عنوان
بررسی تجربی اتصال عمودی پس از کشش برای سازه های فولادی مدولار
کلمات کلیدی
سازه فولادی مدولار، اتصال پس از تنش آزمایشهای جابجایی سیکل، رفتار هیسترتیک، از بین بردن انرژی، سختی جانبی، توزیع فشار،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Modular construction is an off-site construction technique. In this method, structural volumetric modular components are produced in a factory and assembled on-site to form a larger, permanent building. Typical vertical connections of modular steel buildings (MSBs) are provided by on-site welding. Welding may interfere with the finishing of the modules and also when several modules are placed together at a given floor level complete access for welding is compromised. As an alternative to on-site welding, the present paper proposes a new vertical post-tensioned (PT) connection for MSBs. This connection is comprised of a post-tensioned threaded rod installed inside hollow structural sections (HSS) columns and a steel box placed between two modules. In order to evaluate the general and the seismic performance of the proposed connection, eight quasi-static cyclic loading tests were performed in T-shaped subassemblies. A combination of three different steel boxes and three initial post-tensioning loads levels were considered. Additionally, two quasi-static cyclic loading tests were performed using standard welded connections. No local buckling was observed in any of the specimens and no welding fractures occurred up to 3% drift demand. Results indicated that in comparison to the welded connection the proposed PT connection have similar lateral stiffness and strain distribution, and a higher cumulative energy dissipation capability. Therefore, the proposed connection has the potential to eliminate on-site welding in the assembly of the modules while providing the lateral resistance required.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 175, 15 November 2018, Pages 776-789
نویسندگان
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