期刊名称：Vìsnik Pridnìprovsʹkoï Deržavnoï Akademìï Budìvnictva ta Arhìtekturi
印刷版ISSN：2312-2676
出版年度：2017
期号：4
页码：29-36
语种：English
出版社：Prydniprovs'ka State Academy of Civil Engineering and Architecture
摘要：Amplification of beam structures is usually performed in several classical ways,in particular: increase in cross-section due to build-up;changing the static scheme of work due to the installation of laggings,beam knees,racks,etc.However,the arrangement of additional reinforcement structures leads to a decrease in inter-floor space,an increase in the load on the supports and foundations and changes in structural and planning decisions of the interior space of the building.An alternative to these methods of reinforcement of beam structures is external reinforcement namely high-tension cloths,plates or strips that are bonded with special adhesives to the surfaces of structures.However,domestic scientific-technical and normative literature actually leaves such methods of amplification out of its attention.That is why a number of experimental studies were carried out to determine efficiency of reinforcing structures under MAPEI technology with the use of carbon fiber and in order to find alternative to domestic technologies.In alternative studies the authors used fiberglass,steel strips and steel angles bonded with special adhesives of domestic production.The efficiency criterion of technologies being tested was adopted bending load capacity of amplified beam structures made of reinforced concrete.The results of experimental studies found that reinforcement technology MAPEI by applying carbon fiber increases carrying capacity of beams to 417.6% compared with non-enhanced beams.At the same time,amplification of beams with steel angles increased their bearing capacity by 343.9%,with steel plates - by 294.8%,and with fiberglass - by 319.4%.The obtained results indicate high efficiency of the investigated methods of strengthening for beam structures and build up the direction of further research of organizational and technological solutions for the implementation of external additional reinforcement of beam constructions.
其他摘要：Постановка проблеми.Підсилення балкових конструкцій зазвичай виконують кількома класичними способами,зокрема: збільшенням поперечного перетину за рахунок нарощування;зміною статичної схеми роботи за рахунок установки затяжок,підкосів,стійок тощо.Проте вла
关键词：beam structures;amplification;external reinforcement;bearing capacity of structures;carbon fiber;steel plates;angles
其他关键词：балкові конструкції;підсилення;зовнішнє армування;несна здатність конструкцій;вуглецеве волокно;сталеві пластини;кутики
