1,720,961 research outputs found
APPLICATION OF THE DAMPER CABLE SYSTEM TO AN EIGHT STOREY BUILDING
No full textIn the frame of the SPIDER (Strands Pre-stressing far Internal Damping of Earthquake Response) Project a new system far the protection of buildings against the earthquake is studied. The project studies the application of pre-stressed cables in series with tension spring dampers. The cable is fixed at one of the ends to the basement of the building and, at the other end, to the upper part of the building. The viscous fluid damper, coupled in series with the cable, is located close to the basement. The cable is connected with a special device at each of the floor. In this report the application of this Damper Cable System (DCS) of a generic eight storey buildings is studied. The building equipped with DCS is submitted to two artificial time-histories computed following the Eurocode 8 criteria far medium and soft soils. Three different cable layouts, ali respecting the 'Constant Horizontal Force' criterion, ara studied to evaluate possible alternative solutions far this type of building. The behaviour of the building without any anti-seismic device is also computed, using the same.time-histories. The results obtained with and without DCS were compared to evaluate the effects of the system on the protection against an earthquake. The numerical analyses were performed by means of the Abaqus Code SPIDER Project - Contract EVG1 - CT -1999 - 00013 WP4 - Mathematical modelling of structure - DCS Task 4.2: Parametric analysis of selected buildings Task 4.3: Detailed review of effect of seismic input Deliverable D9 - D10 Doc. n.: EVG1-CT -1999-00013 SPIDER/4.2/ENEA/ APO/06/V1.1
DEVELOPING OF A SIMPLIFIED TOOL FOR THE DESIGN OF STRUCTURES EQUIPPED WITH DAMPER CABLE SYSTEMS
No full textIn the frame of the SPIDER (Strands Pre-stressing far Internal Damping of Earthquake Response) Project a new system far the protection of buildings against the earthquake is studied.The project studies the application of pre-stressed cables in series with tension spring dampers: damper cable system (DCS). The cable is fixed at one of the ends to the basement of the building and, at the other end, to the upper part of the building. The shock absorber, coupled in series with the cable, is located close to the basement far easy installation and maintenance. The cable is connected with a special device at each of the floor. This device allows the cable to slip inside and move with respect to the structure. In the numerical analyses performed by means of the Abaqus Code this device is modelled using 'contact elements'. These elements are included in the element library of the code but are not commonly present in other codes, besides the use of these elements can cause convergence problems and increment in the calculation time. In this report is presented a simplified toll that allows avoiding the use of contacts elements in modelling the connecting device maintaining the same features. SPIDER Project - Contract EVG1 - CT -1999 - 00013 WP5 - Numerical analysis of structures Task 5.2: Development of a simplified tool for the design of structures equipped with damper-cable systems Deliverable D12 Doc. N.: EVG1-CT-1999-00013 SPIDER/5.2/ENEA/APO/O8/V1.
DAMPER CABLE SYSTEM - ANALYSIS OF THE ENEL-HYDRO STRUCTURE SUBMITTED TO DIFFERENT EARTHQUAKES
No full textAt the ENEL Hydro laboratories in Seriate (near Bergamo) is present a structure simulating a small building, built in the 80th. This structure was used far previous seismic test, some years ago, and it will be used far tests in the frame of the SPIDER (Strands Pre-stressing far Internal Damping of Earthquake Response) Project. Within the SPIDER Project a Finite Element Model of the Mock-up equipped with the Damper Cable System (DCS) was created. During the tests performed to validate the DCS behaviour, a vibrodina applies a single frequency load in the middle of the roof. These tests are useful to evaluate the dynamic behaviour of the DCS, mounted on a structure very similar to a real building, but they are not really representative of an earthquake; thus it was decided to evaluate numerically the behaviour of the structure submitted to an earthquake trying to evaluate the differences in the behaviour; besides, to put in evidence the effect of the application of the anti seismic devices, the analysis was repeated without the DCS and the results were compared. The numerical analyses were performed by means of the Abaqus Code. SPIDER project - Contract EVG1 - CT - 1999 - 00013 WP4 - Mathematical modelling of structure - DCS Task 4.2: Parametric analysis of selected buildings Task 4.3: Detailed review of effect of seismic input Deliverable D9 - D10 Doc. no: EVG1-CT-1999-00013 SPIDER/4.2/ENEA/APO/04/V1.
APPLICATION OF THE DAMPER CABLE SYSTEM TO A FOUR STOREY BUILDING
No full textIn the frame of the SPIDER (Strands Pre-stressing far Internal Damping of Earthquake Response) Project a new system far the protection of buildings against the earthquake is studied. The project studies the application of pre-stressed cables in series with tension spring dampers. The cable is fixed at one of the ends to the basement of the building and, at the other end, to the upper part of the building. The shock absorber, coupled in series with the cable, is located close to the basement far easy installation and maintenance. The cable is connected with a special device at each of the floor. In this report the application of this Damper Cable System (DCS) of a generic four storey buildings is studied. The building equipped or not with DCS is submitted to several time-histories, real and artificial, and the dynamic behaviour is analysed in order to evaluate the effects of the system on the protection against an earthquake. The analyses ara repeated on the same structure equipped with the cables but without any damper. This solution provides an increased building stiffness without any damping and the comparison with the same building equipped with a complete DCS allows evaluating the damper effect. The numerical analyses were performed by means of the Abaqus Code. SPIDER project - Contract EVG1 - CT - 1999 - 00013 WP4 - Mathematical modelling of structure - DCS Task 4.2: Parametric analysis of selected buildings Task 4.3: Detailed review of effect of seismic input Deliverable D9 - D10 Doc. no: EVG1-CT-1999-00013 SPIDER/4.2/ENEA/APO/05/V1.
IMPLEMENTATION AND VALIDATION OF A FINITE ELEMENT MODEL OF THE ENEL.HYDRO MOCK-UP AND ANALYSIS OF THE BEST TEST CONFIGURATION
No full textAt the ENEL Hydro laboratories in Seriate (near Bergamo) is present a structure simulating a small building, built in the 90th. This structure was used far previous seismic test, some years ago, and it is foreseen to use it again far some tests in the frame of the SPIDER Project. Scope of the job reported in this note was to create a Finite Element Mode! (FEM) of the structure in order to evaluate the present status of the building and to make parametric calculation to study different possible solutions far the new tests arrangement. SPIDER Project - Contract EVG1 - CT -1999 - 00013 WP5 - Numerical analysis of structures Task 5.1: Mock-up design and test analysis Deliverable D11 Doc. n.: EVG1-CT-1999-00013 SPIDER/5.1/ENEA/APO/01/V1.
EXPERIMENTAL DATA ANALYSIS AND COMPARISON WITH THE NUMERICAL RESULT FOR THE MOCK UP TESTS
No full textIn the frame of the SPIDER (Strands Pre-stressing for Internal Damping of Earthquake Response) project a new system for the protection of buildings against the earthquake is studied. The project studies the application of pre-stressed cables in series with tension spring dampers: damper cable system (DCS). The cable is fixed at one of the ends to the basement of the building and, at the other end, to the upper part of the building. The shock absorber, coupled in series with the cable, is located dose to the basement for easy installation and maintenance. The cable is connected with a special device at each of the floor. This device allows the cable to slip inside and move with respect to the structure. . In this report the experimental results obtained during the test carried out at Enel.Hydro on a mock-up of a building equipped with four DCS's are analysed and compared with the results obtained with numerical analyses performed with ABAQUS code. SPIDER Project - Contract EVG1 - CT -1999 - 00013 WP7 - Experimental tests on an existing structure Deliverable D24 Doc. no: EVG1-CT-1999-00013 SPIDER/7.1/ENEA/APO/10N1.
IMPLEMENTATION OF THE DAMPER CABLE SYSTEM ON THE ENEL.HYDRO MOCK-UP FINITE ELEMENT MODEL AND CHOICE OF THE TEST PARAMETERS
No full textAt the ENEL Hydro laboratories in Seriate (near Bergamo) is present a structure simulating a small building, built in the 80th. This structure was used far previous seismic test, some years ago, and it will be used far tests in the frame of the SPIDER Project. The application of the devices studied in the frame of the SPIDER project to the mock-up needs to evaluate the influence of the different damper design parameter in order to choose a proper configuration to be used during the tests. This configuration must allow some millimetres damper stroke during the tests to simulate the real behaviour during an earthquake, but it must limit the telal deformation of the structure and the inter storey drift, to limit the possible damage and to avoid the collapse. Reported in this note are the results of the numerical analysis performed with a Finite Element Model (FEM) of the structure, equipped with the Damper Cable System (DCS), implemented in the ABAOUS Code [1]. In these parametric analysis different values far the damper stiffness, cable and damper preload, C coefficient were taken into account. Different cable size and load levels were also considered. SPIDER project - Contract EVG1 - CT - 1999 - 00013 WP5 - Numerical analysis of structures Task 5.1: Mock-up design and test analysis Deliverable D11 Doc. no: EVG1-CT-1999-00013 SPIDER/5.1/ENEA/APO/02/V1.
EXPERIMENTAL DATA ANALYSIS AND COMPARISON WITH THE NUMERICAL RESULT FOR THE SINGLE DEVICE TESTS
No full textIn the frame of the SPIDER (Strands Pre-stressing far Internal Damping of Earthquake Response) Project a new system far the protection of buildings against the earthquake is studied. The project studies the application of pre-stressed cables in series with tension spring dampers: damper-cable system (DCS). The cable is fixed at one of the ends to the basement of the building and, at the other end, to the upper part of the building. The shock absorber, coupled in series with the cable, is located close to the basement far easy installation and maintenance. The cable is connected with a special device at each of the floor. This device allows the cable to slip inside and move with respect to the structure. In this report the experimental results obtained during the test carried out at Enel.Hydro on the single DCS in the straight and deviated configuration ara analysed and compared with the results obtained with numerical analyses performed with ABAQUS code. The results are compared with the ones obtained with the model proposed by the system manufacturers and with a modified model, developed analysing the tests results, that batter reproduces the DCS behaviour. SPIDER Projeet - Contraet EVG1 - CT -1999 - 00013 WP6 - Experimental tests of prototypes Deliverable D24 Doc. no: EVG1-CT-1999-00013 SPIDER/6.2/ENEA/APO/09/1.
Development and Application of the Innovative Anti-Seismic Techniques: 1) New Activities in Progress at ENEA, Italy, in the Framework of International Collaborations
No full text
- …
