EA201600420A1 - METHOD OF TESTING AND DETERMINATION OF THE DEGREE OF VITALITY OF THE REINFORCED CONCRETE STRUCTURE UNDER A SUPERHEATING ONE-TIME DYNAMIC IMPACT - Google Patents
METHOD OF TESTING AND DETERMINATION OF THE DEGREE OF VITALITY OF THE REINFORCED CONCRETE STRUCTURE UNDER A SUPERHEATING ONE-TIME DYNAMIC IMPACTInfo
- Publication number
- EA201600420A1 EA201600420A1 EA201600420A EA201600420A EA201600420A1 EA 201600420 A1 EA201600420 A1 EA 201600420A1 EA 201600420 A EA201600420 A EA 201600420A EA 201600420 A EA201600420 A EA 201600420A EA 201600420 A1 EA201600420 A1 EA 201600420A1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- reinforced concrete
- concrete structure
- supports
- sample
- degree
- Prior art date
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Способ испытания и определения степени живучести железобетонной конструкции при сверхнормативном однократном динамическом воздействии может быть использован для выбора и обеспечения эффективной защиты строительных конструкций от разрушений при кратковременном сверхнормативном динамическом или взрывном воздействиях. Испытанию на сверхнормативное кратковременное динамическое воздействие подвергают два одинаковых испытуемых образца железобетонной конструкции. Первый образец шарнирно опирают на несминаемые опоры, установленные на жестком контуре. Определяют нагрузку, действующую на испытуемый образец, и абсолютное вертикальное перемещение в его геометрическом центре в процессе динамического воздействия. Второй образец опирают на податливые опоры, выполненные в виде сминаемых вставок с поперечным кольцевым сечением. Податливые опоры устанавливают на тот же жесткий контур, обеспечивая координаты их центров и количество степеней свободы такие же, как и для первого испытуемого образца. Путем интегрирования соответствующего участка эпюры, приходящегося на каждую податливую опору, сначала определяют сосредоточенную силу, действующую на эту опору, и соответственно этой силе, а также с учетом наружного радиуса, толщины стенки и величины сопротивления материала рассчитывают необходимую длину податливой опоры на каждом участке. Для второго испытуемого образца тоже измеряют абсолютное вертикальное перемещение в его геометрическом центре под воздействием сверхнормативной кратковременной динамической нагрузки. О степени живучести железобетонной конструкции судят по коэффициенту нагрузочного резерва, который соответствует отношению абсолютного вертикального перемещения в геометрическом центре первого испытуемого образцов к аналогичному перемещению второго образца. Применение податливых опор с различной степенью энергопоглощения снижает деформативность железобетонной конструкции. Варьируя физико-механическими характеристиками материала, геометрическими размерами податливых опор и их количеством можно выбрать самый эффективный метод защиты от разрушения строительной конструкции и повысить ее живучесть.The method of testing and determining the degree of survivability of a reinforced concrete structure with an excess of single-time dynamic effects can be used to select and ensure effective protection of building structures from damage during short-term excessive dynamic or explosive impacts. Two identical test specimens of reinforced concrete structure are subjected to the test for excessive short-term dynamic impact. The first sample is hingedly supported on permanent supports mounted on a rigid contour. Determine the load acting on the test sample, and the absolute vertical movement in its geometric center in the process of dynamic effects. The second sample is supported on flexible supports, made in the form of crushable inserts with a transverse annular cross-section. Compliant supports are installed on the same rigid contour, providing the coordinates of their centers and the number of degrees of freedom are the same as for the first test sample. By integrating the corresponding portion of the plot per each compliant support, first determine the concentrated force acting on this support, and accordingly this force, as well as taking into account the outer radius, wall thickness and resistance of the material, calculate the required length of the compliant support in each section. For the second test sample, absolute vertical displacement is also measured in its geometric center under the influence of an excess of short-term dynamic load. The degree of survivability of the reinforced concrete structure is judged by the load reserve ratio, which corresponds to the ratio of the absolute vertical movement in the geometric center of the first test specimen to the similar movement of the second sample. The use of malleable supports with varying degrees of energy absorption reduces the deformability of the reinforced concrete structure. By varying the physicomechanical characteristics of the material, the geometrical dimensions of the pliable supports and their quantity, one can choose the most effective method of protection against the destruction of the building structure and increase its survivability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EA201600420A EA030362B1 (en) | 2016-05-17 | 2016-05-17 | Method for testing and determining the degree of survivability of a reinforced concrete structure in case of an above-standard single-time dynamic loading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EA201600420A EA030362B1 (en) | 2016-05-17 | 2016-05-17 | Method for testing and determining the degree of survivability of a reinforced concrete structure in case of an above-standard single-time dynamic loading |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EA201600420A1 true EA201600420A1 (en) | 2017-11-30 |
| EA030362B1 EA030362B1 (en) | 2018-07-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EA201600420A EA030362B1 (en) | 2016-05-17 | 2016-05-17 | Method for testing and determining the degree of survivability of a reinforced concrete structure in case of an above-standard single-time dynamic loading |
Country Status (1)
| Country | Link |
|---|---|
| EA (1) | EA030362B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA033840B1 (en) * | 2018-10-29 | 2019-12-02 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Томский государственный архитектурно-строительный университет" (ТГАСУ) | Method for testing building structure under above-limit short-term dynamic stress |
| CN110387911A (en) * | 2019-08-01 | 2019-10-29 | 上海建工集团股份有限公司 | A kind of model test method for simulating steel pipe pile enclosure structure stress performance |
| RU2730131C1 (en) * | 2019-10-22 | 2020-08-17 | федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный технический университет" | Method of determining strength of eccentrically compressed reinforced concrete element of annular cross-section |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008286679A (en) * | 2007-05-18 | 2008-11-27 | Japan Pile Corp | Dynamic horizontal loading test method, and dynamic horizontal loading test device for pile |
| RU2428334C1 (en) * | 2010-03-22 | 2011-09-10 | Николай Васильевич Маликов | Method of controlling electropneumatic brake |
| RU2428549C1 (en) * | 2010-04-05 | 2011-09-10 | Государственное образовательное учреждение высшего профессионального образования "Томский государственный архитектурно-строительный университет" (ГОУВПО "ТГАСУ") | Device to ensure longevity of building structures during short-term dynamic action |
| RU128716U1 (en) * | 2013-01-10 | 2013-05-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Томский государственный архитектурно-строительный университет" (ТГАСУ) | BENCH FOR TESTING EXPERIENCES ON THE CIRCUIT OF REINFORCED CONCRETE BOARDS |
-
2016
- 2016-05-17 EA EA201600420A patent/EA030362B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EA030362B1 (en) | 2018-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): AM AZ BY KZ KG TJ TM RU |