Seismic performance of a full-scale, reinforced high-performance concrete building. Part I: Experimental study

2008 ◽  
Vol 35 (8) ◽  
pp. 832-848 ◽  
Author(s):  
Sébastien Mousseau ◽  
Patrick Paultre
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Dynamic Testing ◽  
Dynamic Properties ◽  
Full Scale ◽  
Building Structures ◽  
Seismic Behaviour ◽  
Earthquake Excitation ◽  
Concrete Building ◽  
Full Scale Tests

Full-scale tests provide valuable information on the characteristics of building structures that can be used to evaluate design methods, to calibrate modelling techniques, and to determine damage corresponding to loading levels. These tests are scarce due to the enormous requirements in testing space and specialized testing equipment. The seismic behaviour of a full-scale, two-storey, reinforced high-performance concrete building designed with moderate ductility detailing is evaluated by pseudo-dynamic testing, during which increasing seismic loads are applied, resulting in increasing levels of permanent damage to the structure. To monitor the level of damage, a series of successive forced-vibration tests are also carried out at each step of the process and are used to track changes in the key dynamic properties of the building. The paper presents the design of the test structure according to the new edition of the CSA A23.3-04 Design of concrete structures standard, the series of pseudo-dynamic tests simulating different levels of earthquake excitation consistent with the 2005 edition of the National building code of Canada, and the evaluation of the performance of the building. It is shown that the detailing requirements of CSA A23.3-04 are more than adequate to provide the ductility and overstrength expected.

Seismic performance of a full-scale, reinforced high-performance concrete building. Part II: Analytical study

2008 ◽  
Vol 35 (8) ◽  
pp. 849-862 ◽  
Author(s):  
Sébastien Mousseau ◽  
Patrick Paultre ◽  
Jacky Mazars
Keyword(s):  
High Performance ◽  
Damage Mechanics ◽  
High Performance Concrete ◽  
Full Scale ◽  
Building Structures ◽  
Test Results ◽  
Seismic Behaviour ◽  
Analysis And Design ◽  
Advantages And Disadvantages ◽  
Concrete Building

Full-scale tests provide valuable information on the characteristics of building structures that can be used to evaluate design methods, to calibrate modelling techniques, and to determine damage corresponding to loading levels. These tests are scarce due to the enormous requirements in testing space and specialized testing equipment. The seismic behaviour of a full-scale, two-storey, reinforced high-performance concrete building designed with moderate ductility detailing is evaluated by pseudo-dynamic testing, during which increasing seismic loads are applied, resulting in increasing levels of permanent damage to the structure. This paper presents the analytical predictions of the test results using a global force–displacement parameters approach and a refined approach, half-way between global modelling and finite element modelling, using force–strain parameters and damage mechanics principles. Identification of the parameters required to describe the response parameters are presented together with a description of the numerical procedures used in each approach. It is shown that the predictions are in good agreement with the test results. Advantages and disadvantages of each approach are highlighted in the context of performance-based analysis and design.

scholarly journals Experimental Behavior of Precast Bridge Deck Systems with Non-Proprietary UHPC Transverse Field Joints

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6964
Author(s):  
Mohamed Abokifa ◽  
Mohamed A. Moustafa
Keyword(s):  
High Performance ◽  
Bridge Deck ◽  
High Performance Concrete ◽  
Experimental Testing ◽  
Bridge Decks ◽  
Transverse Field ◽  
Full Scale ◽  
Bridge Construction ◽  
Vertical Loading ◽  
Precast Bridge Deck

Full-depth precast bridge decks are widely used to expedite bridge construction and enhance durability. These deck systems face the challenge that their durability and performance are usually dictated by the effectiveness of their field joints and closure joint materials. Hence, commercial ultra-high performance concrete (UHPC) products have gained popularity for use in such joints because of their superior mechanical properties. However, the proprietary and relatively expensive nature of the robust UHPC mixes may pose some limitations on their future implementation. For these reasons, many research agencies along with state departments of transportation sought their way to develop cheaper non-proprietary UHPC (NP-UHPC) mixes using locally supplied materials. The objective of this study is to demonstrate the full-scale application of the recently developed NP-UHPC mixes at the ABC-UTC (accelerated bridge construction university transportation center) in transverse field joints of precast bridge decks. This study included experimental testing of three full-scale precast bridge deck subassemblies with transverse NP-UHPC field joints under static vertical loading. The test parameters included NP-UHPC mixes with different steel fibers amount, different joint splice details, and joint widths. The results of this study were compared with the results of a similar proprietary UHPC reference specimen. The structural behavior of the test specimens was evaluated in terms of the load versus deflection, reinforcement and concrete strains, and full assessment of the field joint performance. The study showed that the proposed NP-UHPC mixes and field joint details can be efficiently used in the transverse deck field joints with comparable behavior to the proprietary UHPC joints. The study concluded that the proposed systems remained elastic under the target design service and ultimate loads. In addition, the study showed that the use of reinforcement loop splices enhanced the load distribution across the specimen’s cross-section.

scholarly journals Experience in conducting field tests of metal structural constructions of coatings of the “BrSTU”

2020 ◽  
Vol 212 ◽  
pp. 02015
Author(s):  
Mikalai Shalabyta ◽  
Andrei Shuryn ◽  
Tatsiana Shalabyta ◽  
Viacheslav Dragan
Keyword(s):  
Theoretical Calculations ◽  
Field Tests ◽  
Full Scale ◽  
Complex Structures ◽  
Building Structures ◽  
The World ◽  
Special Approach ◽  
Full Scale Tests ◽  
Degree Of Participation ◽  
First Time

There are quite often statically complex structures, the reliability of theoretical calculations of which needs experimental verification in the world practice of design and construction. Studies of building structures functioning can be full-scale or carried out on their models in laboratory conditions depending on the goals set. Full-scale tests of building structures are more expensive, therefore, their implementation requires a special approach and justification. However, to check the operation of complex, critical structures which primarily include metal spatial large-span structures of coatings of buildings and structures especially those used for the first time to assess their bearing capacity, to establish the degree of participation in the construction of each of the elements, to study the operation of individual new nodal elements etc., only full-scale tests are required.

scholarly journals Influence of Composition and Technological Factors on Variatropic Efficiency and Constructive Quality Coefficients of Lightweight Vibro-Centrifuged Concrete with Alkalized Mixing Water

2021 ◽  
Vol 11 (19) ◽  
pp. 9293
Author(s):  
Sergey A. Stel’makh ◽  
Evgenii M. Shcherban’ ◽  
Alexey N. Beskopylny ◽  
Levon R. Mailyan ◽  
Besarion Meskhi ◽  
...  
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
New Technology ◽  
Building Structures ◽  
Structural Improvement ◽  
Low Energy Consumption ◽  
Integral Characteristics ◽  
Operational Ability ◽  
Positive Effect ◽  
Mixing Water

Alkalization technology and its application to obtain high-performance concrete compositions is an urgent scientific problem that opens opportunities for improving building structures. The article is devoted to the new technology of manufacturing reinforced concrete structures with low energy consumption, resource, and labor intensity based on the improved variatropic configuration of vibro-centrifuged concrete using activated water with high pH. The synergistic effect of the joint use of the proposed novel solutions has been theoretically and experimentally proved. Thus, growth in physical and mechanical characteristics of up to 15–20% was obtained, the structure and its operational ability were improved (the effectiveness of structural improvement, expressed as a percentage, reached values over 70%, concerning control samples). A positive effect on the properties of vibro-centrifuged concrete over the entire thickness of the annular section has been revealed. A method for controlling the integral characteristics of concrete has been obtained. The possibility of regulating the variatropic structure and controlling the differential characteristics of vibro-centrifuged concrete has been established. An assessment of the constructive quality and variatropic efficiency of vibro-centrifuged concrete was carried out, and new calculated dependencies were proposed, expressed in the form of relative coefficients.

Study on Energy-Saving Residential Building Structures of Multi-Ribbed Composite Walls with High Performance Concrete

2006 ◽  
Vol 302-303 ◽  
pp. 444-450
Author(s):  
Yin Zhang ◽  
Qian Feng Yao ◽  
Yong Gang Ding
Keyword(s):  
Energy Saving ◽  
High Performance ◽  
High Performance Concrete ◽  
Residential Building ◽  
Economic Benefits ◽  
Building Structures ◽  
New Energy ◽  
Good Energy ◽  
Saving Effect ◽  
Seismic Behaviors

In this paper, the study and application of an entirely new energy-saving residential building structure, whose wall is constructed with multi-ribbed composite wall and latent frame. Based on experimental research and theoretical analysis, it was found that the structure system had good seismic behaviors, strong structure adaptability and good energy-saving effect. At the same time, notable social and economic benefits have been shown in several examples.

An Experimental Study on the Fire Behavior of Concrete Segments in Tunnel Linings

2011 ◽  
Vol 82 ◽  
pp. 527-532 ◽  
Author(s):  
Kyung Hoon Park ◽  
Heung Youl Kim ◽  
Byung Youl Min
Keyword(s):  
Fire Resistance ◽  
High Performance ◽  
High Performance Concrete ◽  
Fire Behavior ◽  
Concrete Lining ◽  
European Federation ◽  
Structural Members ◽  
Transverse Pressure ◽  
C Segments ◽  
Full Scale Tests

As soon as the plan to build deep and long tunnels in Korea was announced, guaranteeing fire-resistance of R/C tunnel linings became an important issue. As a matter of fact, the R/C segments used in bored tunnels are structural members which are requested to resist both the transverse pressure of the soil and the longitudinal thrust of the TBM. Because of the temperature sensitivity of the high-performance concrete (compressive strength>40 MPa) that will be used, proper measures should be taken against possible fire-induced damage, like surface spalling and deterioration of the reinforcement. In the past, concrete linings were built in Korea with scanty attention to their fire safety, as demonstrated by the lack of studies on fire resistance of both materials and structures. Therefore, in this study the objective is how to improve the safety of R/C tunnel linings in case of fire, by comparing the damage observed in some full-scale tests recently performance in Korea with the damage observed in the tests performed by EFNARC (European Federation of Producer and Applicators of Specialist Products for Structures) and by investigating the fire behavior of a concrete lining as a whole.

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