title: ÐÐ°Ð¿ÑÑÐ¶ÑÐ½Ð½Ð¾-Ð´ÐµÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ðµ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ðµ ÑÑÑÐ±Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ñ Ð´Ð²Ð¾Ð¹Ð½Ð¾Ð¹ Ð¾Ð±Ð¾Ð»Ð¾ÑÐºÐ¾Ð¹
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ°
titleType: Subtitle
title: Stress-strain state of concrete filled double skin tubes
Creators: name: ÐÐ¾Ð²Ð°Ð»ÑÐµÐ², ÐÐ²Ð°Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÑÑÑÐ±Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÐµ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸
Ð´Ð²Ð¾Ð¹Ð½Ð°Ñ Ð¾Ð±Ð¾Ð»Ð¾ÑÐºÐ°
Ð¿Ð¾Ð»Ð¸Ð¼ÐµÑÐ½ÑÐ¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÐ¹ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»
Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð½Ð¾-Ð´ÐµÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ðµ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ðµ
Ð½ÐµÑÑÑÐ°Ñ ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÑ
concrete filled steel tubes
double skin
fiber reinforced polymer
stress-strain state
bearing capacity

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: Â«ÐÐ°Ð¿ÑÑÐ¶ÑÐ½Ð½Ð¾-Ð´ÐµÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ðµ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ðµ ÑÑÑÐ±Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ñ Ð´Ð²Ð¾Ð¹Ð½Ð¾Ð¹ Ð¾Ð±Ð¾Ð»Ð¾ÑÐºÐ¾Ð¹Â».ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð½Ð°Ð¿ÑÑÐ¶ÑÐ½Ð½Ð¾-Ð´ÐµÑÐ¾ÑÐ¼Ð¸ÑÑÐµÐ¼ÑÑ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº ÑÑÑÐ±Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ñ Ð´Ð²Ð¾Ð¹Ð½Ð¾Ð¹ Ð¾Ð±Ð¾Ð»Ð¾ÑÐºÐ¾Ð¹ Ð¸Ð· ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð² Ð¿Ð¾ÑÑÐµÐ´ÑÑÐ²Ð¾Ð¼ ÐºÐ¾Ð½ÐµÑÐ½Ð¾-ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ½Ð¾Ð³Ð¾ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ Ð²Ð°ÑÐ¸Ð°Ð½ÑÐ¾Ð² ÐºÐ¾Ð½ÑÐ¸Ð³ÑÑÐ°ÑÐ¸Ð¹ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ñ ÑÑÑÑÐ¾Ð¼ Ð½ÐµÐ»Ð¸Ð½ÐµÐ¹Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð².ÐÐ°Ð´Ð°ÑÐ¸, ÐºÐ¾ÑÐ¾ÑÑÐµ Ð±ÑÐ»Ð¸ Ð¿Ð¾ÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ð² ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ:1. ÐÐ·ÑÑÐµÐ½Ð¸Ðµ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ Ð¼ÐµÑÐ¾Ð´Ð¸Ðº ÑÐ°ÑÑÑÑÐ° ÑÑÑÐ±Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹;2. Ð¡ÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ Ð¼ÐµÑÐ¾Ð´Ð¸Ðº;3.Â  ÐÐ¾Ð½ÐµÑÐ½Ð¾-ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÑÐ±Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ñ Ð´Ð²Ð¾Ð¹Ð½Ð¾Ð¹ Ð¾Ð±Ð¾Ð»Ð¾ÑÐºÐ¾Ð¹;4. Ð¡ÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÑ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð²;5. Ð¢ÐµÑÐ½Ð¸ÐºÐ¾-ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ðµ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹.Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð¸ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð¸ Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ñ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ðµ Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ¸ ÑÐ°ÑÑÑÑÐ° ÑÑÑÐ±Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ð¸ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð¾ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÑ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð². ÐÐ°Ð¶Ð´Ð°Ñ Ð¸Ð· ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ð½ÑÑ Ð¼ÐµÑÐ¾Ð´Ð¸Ðº Ð±ÑÐ»Ð° Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð° Ð´Ð»Ñ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ð² ÑÐ°ÑÑÑÑÐµ ÑÑÑÐ±Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ñ Ð´Ð²Ð¾Ð¹Ð½Ð¾Ð¹ Ð¾Ð±Ð¾Ð»Ð¾ÑÐºÐ¾Ð¹.ÐÑÐ»Ð¾ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ ÐºÐ¾Ð½ÐµÑÐ½Ð¾-ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÑÐ±Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ñ Ð´Ð²Ð¾Ð¹Ð½Ð¾Ð¹ Ð¾Ð±Ð¾Ð»Ð¾ÑÐºÐ¾Ð¹ Ð´Ð»Ñ 10 ÑÐ¾ÑÐµÑÐ°Ð½Ð¸Ð¹ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð² Ð¿ÑÐ¸ 5 Ð²Ð°ÑÐ¸Ð°Ð½ÑÐ°Ñ ÑÐµÑÐµÐ½Ð¸Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð±ÑÐ»Ð¸ ÑÑÑÐ°Ð½Ð¾Ð²Ð»ÐµÐ½Ñ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐ¸ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ ÐºÐ¾ÑÑÑÐ¸ÑÐ¸ÐµÐ½ÑÐ° Ð¿ÑÑÑÐ¾ÑÐ½Ð¾ÑÑÐ¸ Ð½Ð° Ð½ÐµÑÑÑÑÑ ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ Ð¸ Ð¸Ð·Ð³Ð¸Ð±Ð½ÑÑ Ð¶ÑÑÑÐºÐ¾ÑÑÑ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹, Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÑÐ½ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÐ¹ Ð´Ð¸Ð°Ð¿Ð°Ð·Ð¾Ð½ ÐºÐ¾ÑÑÑÐ¸ÑÐ¸ÐµÐ½ÑÐ° Ð¿ÑÑÑÐ¾ÑÐ½Ð¾ÑÑÐ¸ Ñ ÑÐ¾ÑÐºÐ¸ Ð·ÑÐµÐ½Ð¸Ñ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ñ Ð½Ð°Ð¸Ð±Ð¾Ð»ÑÑÐµÐ¹ Ð½ÐµÑÑÑÐµÐ¹ ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸. ÐÑÑÑÐµÑÑÐ²Ð»ÐµÐ½Ð¾ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÑ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð² Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ°Ð¼Ð¸, Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÐ¼Ð¸ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð½ÑÑ Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð¼ÐµÑÐ¾Ð´Ð¸Ðº.ÐÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð° Ð¾ÑÐµÐ½ÐºÐ° ÑÐµÑÐ½Ð¸ÐºÐ¾-ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ð² ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ð¸ Ñ ÑÑÐ°Ð´Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÐ¼Ð¸ ÑÑÑÐ±Ð¾Ð±ÐµÑÐ¾Ð½Ð½ÑÐ¼Ð¸ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸ÑÐ¼Ð¸, Ð² ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÐºÐ¾ÑÐ¾ÑÐ¾Ð¹ Ð±ÑÐ»Ð¾ ÑÑÑÐ°Ð½Ð¾Ð²Ð»ÐµÐ½Ð¾, ÑÑÐ¾ Ð²ÑÐµ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼ÑÐµ ÑÐµÑÐµÐ½Ð¸Ñ ÑÐ²Ð»ÑÑÑÑÑ Ð±Ð¾Ð»ÐµÐµ ÑÑÑÐµÐºÑÐ¸Ð²Ð½ÑÐ¼Ð¸ Ñ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ¾ÑÐºÐ¸ Ð·ÑÐµÐ½Ð¸Ñ, Ð¾Ð±ÐµÑÐ¿ÐµÑÐ¸Ð²Ð°Ñ ÑÐ½Ð¸Ð¶ÐµÐ½Ð¸Ðµ ÑÑÑÐ´Ð¾Ð·Ð°ÑÑÐ°Ñ Ð½Ð° 10-17% Ð¸ ÑÐ¼ÐµÑÐ½Ð¾Ð¹ ÑÑÐ¾Ð¸Ð¼Ð¾ÑÑÐ¸ Ð´Ð¾ 7,6%.
description: The subject of the graduate qualification work is Â«Stress-strain state of concrete filled double skin tubesÂ».The current work is devoted to the study of the stress-strain specificities of concrete filled double skin tubes made of various materials by means of nonlinear finite element modeling of different configurations of considered structures.The research set the following goals:1. Studying of existing methods of calculation of concrete filled steel tubes;2. Analysis of existing methods;3. Finite-element modeling of concrete filled double skin tubes;4. Analysis of the obtained results;5. Feasibility study of concrete filled double skin tubes.In the course of the work, existing methods of calculation of concrete filled steel tubes were examined and analyzed. The obtained results were compared. Each method was modified for structural analysis of concrete filled double skin tubes.Finite-element modeling of concrete filled double skin tubes was performed for 10 material combinations and 5 different cross-sections. As a result, the dependences of the hollowness ratio on the bearing capacity and bending stiffness of the considered structures were determined. The optimum range of hollowness ratio was determined in terms of providing the highest bearing capacity. The obtained results were compared with the results obtained using the modified methods.The estimation of technical-and-economic efficiency of the considered constructions was performed in comparison with concrete filled steel tubes. As a result, it was found that all the considered solutions are more effective from the economic point of view providing the reduction of labour by 10-17% and the estimated costs of up to 7,6%.