RU56617U1 - BENCH FOR TESTING REINFORCED CONCRETE ELEMENTS FOR COMPRESSION WITH SHORT DYNAMIC Torsion - Google Patents

BENCH FOR TESTING REINFORCED CONCRETE ELEMENTS FOR COMPRESSION WITH SHORT DYNAMIC Torsion Download PDF

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Publication number
RU56617U1
RU56617U1 RU2006113831/22U RU2006113831U RU56617U1 RU 56617 U1 RU56617 U1 RU 56617U1 RU 2006113831/22 U RU2006113831/22 U RU 2006113831/22U RU 2006113831 U RU2006113831 U RU 2006113831U RU 56617 U1 RU56617 U1 RU 56617U1
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Russia
Prior art keywords
reinforced concrete
headband
traverses
compression
loading
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RU2006113831/22U
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Russian (ru)
Inventor
Василий Сергеевич Плевков
Павел Валерьевич Стуков
Константин Викторович Калачев
Павел Николаевич Киселев
Original Assignee
Государственное образовательное учреждение высшего профессионального образования "Томский государственный архитектурно-строительный университет" (ГОУВПО "ТГАСУ")
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Priority to RU2006113831/22U priority Critical patent/RU56617U1/en
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Abstract

The utility model can find application in dynamic tests of reinforced concrete elements, in particular, in compression tests with short-term dynamic torsion that occurs under shock loading. The technical result consists in creating a stress-strain state, characterized by the simultaneous action of compressive longitudinal force and torque during short-term dynamic loading. To achieve this result, the stand contains supports mounted on the power floor to accommodate the reinforced concrete element, on one end of which a headband with a lever for accepting shock load and a bearing are tightly mounted, and the second end of the reinforced concrete element is rigidly fixed in a metal shoe. In addition, the stand contains traverses mounted on additional supports at both ends of the reinforced concrete element and connected by strands, and a hydraulic jack located between the headband and the traverse. The hydraulic jack and the metal shoe abut against the traverses, which are solid. To center the compression force, a metal gasket is used, made in the form of a spherical segment and placed between the headband and the jack.

Description

The utility model relates to the field of dynamic research of materials, and more specifically to testing equipment, namely, machines for testing concrete samples for compression with torsion.

Known installation for testing beams, presented in the journal "Concrete and reinforced concrete" No. 5, 1969, S. 29. The installation consists of: support and loading saddles, rigidly mounted on the power floor, supporting grips, loading shoes, swing arm, swing arm, detachable link with clutch, pressure dynamometer (force meter), roller bearings, support joints, rollers and loading cross beam. This setup allows you to study the operation of reinforced concrete elements with oblique bending, but does not allow you to create compression with torsion in the reinforced concrete element.

The closest device adopted for the prototype is a stand according to the patent of the Russian Federation for utility model No. 48225. This device contains: support elements mounted on the power floor, additional supports located on both sides of the loading device, additional traverses mounted on additional supports, cords, the ends of which are fixed in additional traverses, three metal plates, rollers, loading traverse, load meter and a jack. The loading device is made in the form of a pile rig, the masts of which are equipped with a load limiter. One roller is placed motionless in the cutout of one support element, the other in the cutout of the second support element with the possibility of horizontal movement, two metal plates are placed on the rollers, and the third is fixed on the outlets of the reinforced concrete element. Traverses are executed with

openings for the passage of releases reinforcement of a reinforced concrete element. A jack is installed between the third metal plate and the additional traverse. Supports for additional traverses are made with the possibility of adjusting their height. This setup allows testing reinforced concrete elements for oblique eccentric short-term dynamic tension, but it does not allow investigating the operation of a reinforced concrete element in the event of a torque and the action of longitudinal compressive force, which, as shown by theoretical studies, in some cases simultaneously occur during the operation of reinforced concrete structures, such as reinforced concrete columns industrial buildings.

The objective of the utility model is to expand the range of dynamic research. The technical result, the achievement of which the problem is aimed at, is to create a stress-strain state characterized by the simultaneous action of compressive longitudinal force and torque arising from short-term dynamic loading.

The problem is solved as follows.

In common with the prototype is that the claimed device contains: supports for placing a reinforced concrete element mounted on a power floor, traverses mounted on additional supports on both ends of the reinforced concrete element and connected by strands, a hydraulic jack, a loading device and a force meter.

Unlike the prototype, the stand has: a bearing mounted on a support, tightly worn on one of the ends of a reinforced concrete element, to ensure rotation during torsion and to maintain a horizontal position, mounted on an appropriate support and resting on a traverse metal shoe for hard pinching of the second end of a reinforced concrete element, put on the end of the reinforced concrete element between the bearing and the hydraulic jack

a lever for transmitting torque arising from the action of the applied shock load, a metal gasket with a spherical segment. At the same time, the traverses are made continuous, while the jack is located between the second traverse and the headband, abutting against this traverse.

As a static loading device, a hydraulic jack is used. The compression force is centered using an auxiliary element - a metal gasket, made in the form of a spherical segment and located between the headband and the jack. Dynamically loading device is made in the form of a lever attached to the headband.

During compression with torsion in a reinforced concrete specimen, longitudinal compressive force and torque arise. The longitudinal compressive force is created by the hydraulic jack due to the fact that it abuts against the traverse and the headband of the test specimen, the other end of the specimen rests against the second traverse through the metal shoe, and the traverses are interconnected by metal bands. Torque is created by dropping a load of a certain mass from a given height onto a lever attached to the headband.

The utility model is illustrated by drawings. Figure 1 shows a General view, figure 2 is a front view, figure 3 is a top view, figure 4 is a side view.

The design of the stand is installed on the supports 1, which are fixed by anchors 2 on the power floor 3 to ensure rigid fastening of the test sample. Experimental sample 4 is fixed rigidly in a metal shoe 5 and bearing 6, which are mounted to the supports 1. The centering of the test sample 4 in the bearing 6 is carried out using wooden gaskets. The design scheme is a console with an additional hinge. To transfer the compressive load to the experimental sample 4, a metal ogolovin 7 is provided. The central application of longitudinal compressive force is carried out at

using a metal gasket with a spherical segment, which is placed between the hydraulic jack 8 and the headband 7. The hydraulic jack 8 is abutted in the crosshead 9, which is connected by a strand 10 to the second traverse 11. To create a torque load in the experimental sample 4, a lever 12 attached to the headband 7 is used .

First, using a jack 8 in the experimental sample 4 creates a longitudinal compressive load. Test sample 4 is then held under this load for approximately ten minutes. After this time, an impact load is applied to the arm 12. The impact load is created by the mass of the falling load. In this case, a longitudinal compressive force and torque act in the reinforced concrete sample 4. The force of impact can be adjusted by increasing or decreasing the height of the load, as well as by changing the mass of the cargo.

To obtain data on the stress-strain state of the experimental sample, a set of standard measuring instruments is used.

Claims (2)

1. A test bench for testing reinforced concrete elements for compression with short-term dynamic torsion, containing supports for placing the reinforced concrete element mounted on the force floor, traverses mounted on additional supports on both ends of the reinforced concrete element and connected by strands, a hydraulic jack, a loading device and a load meter , characterized in that it further comprises a bearing mounted on a support, tightly worn on one end of a reinforced concrete element, mounted on a joint a supporting support and a metal shoe abutting against the traverse, in which the second end of the reinforced concrete element is rigidly fixed, while the loading device is made in the form of a headband with a lever for applying an impact load tightly worn on the end of the reinforced concrete element between the bearing and the hydraulic jack, which abuts against the second traverse In addition, the stand is equipped with a metal gasket made in the form of a spherical segment and located between the headband and the jack.
2. The stand according to claim 1, characterized in that the traverses are solid.
Figure 00000001
RU2006113831/22U 2006-04-24 2006-04-24 BENCH FOR TESTING REINFORCED CONCRETE ELEMENTS FOR COMPRESSION WITH SHORT DYNAMIC Torsion RU56617U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2006113831/22U RU56617U1 (en) 2006-04-24 2006-04-24 BENCH FOR TESTING REINFORCED CONCRETE ELEMENTS FOR COMPRESSION WITH SHORT DYNAMIC Torsion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2006113831/22U RU56617U1 (en) 2006-04-24 2006-04-24 BENCH FOR TESTING REINFORCED CONCRETE ELEMENTS FOR COMPRESSION WITH SHORT DYNAMIC Torsion

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RU56617U1 true RU56617U1 (en) 2006-09-10

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RU2527263C1 (en) * 2013-04-18 2014-08-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Самарский государственный архитектурно-строительный университет" (СГАСУ) Device to control strength of reinforced concrete structures
RU2570231C1 (en) * 2014-09-09 2015-12-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Томский государственный архитектурно-строительный университет" (ТГАСУ) Bench for testing of reinforced concrete elements for joint short-term dynamic impact of twisting and running torque
RU172393U1 (en) * 2017-03-20 2017-07-06 Федеральное государственное бюджетное образовательное учреждение высшего образования "Томский государственный архитектурно-строительный университет" (ТГАСУ) Bench for testing reinforced concrete elements with compression and short dynamic turning

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USD683229S1 (en) 2012-06-07 2013-05-28 Colgate-Palmolive Company Container
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USD684864S1 (en) 2012-06-07 2013-06-25 Colgate-Palmolive Company Container
USD688131S1 (en) 2012-06-07 2013-08-20 Colgate-Palmolive Company Container
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USD694631S1 (en) 2012-06-07 2013-12-03 Colgate-Palmolive Company Container
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USD700056S1 (en) 2012-06-07 2014-02-25 Colgate-Palmolive Company Container
USD708949S1 (en) 2012-06-07 2014-07-15 Colgate-Palmolive Company Cap for a container
USD708948S1 (en) 2012-06-07 2014-07-15 Colgate-Palmolive Company Cap for a container
RU2527263C1 (en) * 2013-04-18 2014-08-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Самарский государственный архитектурно-строительный университет" (СГАСУ) Device to control strength of reinforced concrete structures
RU2570231C1 (en) * 2014-09-09 2015-12-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Томский государственный архитектурно-строительный университет" (ТГАСУ) Bench for testing of reinforced concrete elements for joint short-term dynamic impact of twisting and running torque
RU172393U1 (en) * 2017-03-20 2017-07-06 Федеральное государственное бюджетное образовательное учреждение высшего образования "Томский государственный архитектурно-строительный университет" (ТГАСУ) Bench for testing reinforced concrete elements with compression and short dynamic turning

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MM1K Utility model has become invalid (non-payment of fees)

Effective date: 20070425