Seismic design and application of hybrid coupled walls with replaceable steel coupling beams in high‐rise buildings

2020 ◽  
Vol 29 (8) ◽  
Author(s):  
Xiaodong Ji ◽  
Carlos Molina Hutt
Keyword(s):  
Seismic Design ◽  
Coupling Beams ◽  
High Rise ◽  
Coupled Walls ◽  
Steel Coupling Beams ◽  
Design And Application

Stiffness and Energy Dissipation of Steel Coupling Beam Embedded in the PSH2C and Normal Concrete Shear Wall

2013 ◽  
Vol 351-352 ◽  
pp. 556-559
Author(s):  
Sun Woong Kim ◽  
Wan Shin Park ◽  
Nam Yong Eom ◽  
Hyun Do Yun ◽  
Young Il Jang
Keyword(s):  
High Stress ◽  
Shear Wall ◽  
Cement Composites ◽  
Coupling Beam ◽  
Lateral Loads ◽  
Coupling Beams ◽  
High Rise ◽  
Coupled Shear Wall ◽  
Steel Coupling Beam ◽  
Steel Coupling Beams

Hybrid coupled shear wall with steel coupling beams has often been used as load-resisting system of high-rise buildings under lateral loads. However, joint between steel beam and shear wall is under combined and high stress. Reinforcement details of the joint are very heavy. This study addresses the effect of shear wall cement composites type in hybrid wall system on the seismic performance of steel coupling beams embedded in shear wall. The main test variables were the failure mode of steel coupling beam and types of cement composites, such as PSH2C and concrete, for shear wall.

scholarly journals A Review on Seismic Behaviour of Coupled Wall Structures

2021 ◽  
Author(s):  
Anu Philip ◽  
Bushra M. A
Keyword(s):  
Absorption Capacity ◽  
Lateral Loads ◽  
Structural System ◽  
Coupling Beams ◽  
Seismic Behaviour ◽  
Coupled Wall ◽  
High Rise ◽  
High Rise Building ◽  
Wall Structures ◽  
Coupled Walls

Increase in population density and shortage of land are the two major problems in all developing countries including India. To mitigate these problems, the designers resort to high rise building. One of the most important criteria for designing a structural system is its resistance to lateral loads. Coupled walls structures is considered to be one of the potential option for resisting lateral loads in high-rise structure and have widely been used around the world in multi-story buildings. Coupled walls, mainly consist of pier walls which are connected by coupling beams at each floor level. These systems are typically located in the service core and sometimes on the perimeter of the buildings. The main benefit of coupled wall over cantilever walls are, a part of the total overturning moment is resisted by coupling action and there is energy dissipation along the height of the structure through the formation of plastic hinges at both ends of the coupling beams. The present work reviews different factors influencing the seismic performance of coupled wall structural system, importance of coupling ratio, different modeling techniques, a comparative study on different coupled wall systems and a brief overview of design methodologies. Considering structural performance, energy absorption capacity and higher shear stiffness to limit lateral deformation, coupled wall structures were considered to be efficient and economical structural system in high-rise building.

Evaluation of Coupling Beams Behavior Concrete Shear Wall with Rectangular and Octagonal Openings

2015 ◽  
Vol 735 ◽  
pp. 104-108
Author(s):  
Abdul Kadir Marsono ◽  
Somaieh Hatami
Keyword(s):  
Reinforced Concrete ◽  
Cyclic Load ◽  
Shear Walls ◽  
Shear Wall ◽  
Experimental Results ◽  
Coupling Beams ◽  
High Rise ◽  
Coupled Walls ◽  
Car Park ◽  
Common Shape

Reinforced concrete coupled walls are cantilevered shear walls joined by coupling beams and are used in high-rise apartment for many years. Rectangular openings are the most common shape of openings used in shear wall in order to provide doors, windows, entrance to car park areas and elevators or staircases. Behavior of coupling beams affect the strength of coupled walls. This research suggests adding haunches to the corners of rectangular openings and form octagonal openings as a method to increase the strength of coupling beams. The experimental results of shear wall with single band of rectangular and octagonal openings are compared in terms of behavior of coupling beams under cyclic load. The results demonstrate that the coupling beams in shear wall with octagonal openings are stronger than coupling beams in shear wall with rectangular openings.

Friction Damper in Steel Coupling Beams for Enhanced Seismic Resilience of High-rise Buildings

2015 ◽  
Vol 104 (10) ◽  
pp. 1-8 ◽  
Author(s):  
Zhe Qu ◽  
Xiaodong Ji ◽  
Yandong Wang ◽  
Xiao Shi ◽  
Jinzhen Xie
Keyword(s):  
Friction Damper ◽  
Coupling Beams ◽  
High Rise ◽  
Steel Coupling Beams ◽  
Seismic Resilience

Analysis on Seismic Performance of Beam and Plate Converter Floor

2014 ◽  
Vol 580-583 ◽  
pp. 1551-1554
Author(s):  
Gen Tian Zhao ◽  
Xu Ting Kou
Keyword(s):  
Seismic Performance ◽  
Seismic Design ◽  
Structure Calculation ◽  
High Rise ◽  
High Rise Building ◽  
Design Requirements

With the project case, the seismic performance of girder transfer floor member and the plate transfer floor member were discussed. Contrast calculation was carried out in girder transfer floor member and the plate transfer floor member with SATWE method to analyze its reasonable and unreasonable places. Based on overall structure calculation of a high rise building, the seismic design requirements for buildings applying thick transferring plate have been presented. The conclusion is that the seismic performance of girder transfer floor member is more advantageous and affordable, more convenient and more economical in ingredients.

Automation of seismic design of high-rise structure with braced steel frame

2021 ◽  
Author(s):  
Xin Zhao ◽  
Gang Wang ◽  
Jinlun Cai ◽  
Junchen Guo
Keyword(s):  
Seismic Performance ◽  
Seismic Design ◽  
Structural Design ◽  
Structure Design ◽  
Steel Frame ◽  
Design Methods ◽  
Automatic Design ◽  
Component Level ◽  
Design Algorithm ◽  
High Rise

<p>With the continuous development and progress of society, the structure of high-rise buildings has been paid more and more attention by the engineering community. However, the existing high- rise structure design methods often have a lot of redundancy and have a lot of room for optimization. Most of the existing seismic design methods of high-rise structures are based on engineering experience and manual iterative methods, so that the efficiency of design can not meet the needs of the society. if the method of design automation is adopted, the workload of designers can be greatly reduced and the efficiency of structural design can be improved. Based on the digital modeling theory, this paper proposes a MAD automatic design algorithm, in which the designer provides the initial design of the structure, and the algorithm carries out the modeling, analysis, optimization and design of each stage of the structure, and finally obtains the optimal structure. The structural design module of this algorithm starts from the component level, when the component constraint design meets the limit requirements of the specification, it enters and completes the component constraint design and the global constraint design of the structure in turn. In this paper, taking a ten-story braced steel frame high-rise structure as an example, the optimal design is carried out, and its seismic performance is analyzed. the results show that the MAD automatic design algorithm can distribute the materials to each part reasonably, which can significantly improve the seismic performance of the structure and realize the effective seismic design.</p>

scholarly journals Some limitations of modal analysis in seismic design

1969 ◽  
Vol 2 (3) ◽  
pp. 284-288
Author(s):  
R. Shepherd
Keyword(s):  
Seismic Design ◽  
Response Spectrum ◽  
Individual Member ◽  
Square Root ◽  
High Rise ◽  
Earthquake Resistant Design ◽  
Recent Computer ◽  
Computer Analyses ◽  
Design Loads ◽  
The Individual

In the normal-mode, response-spectrum approach to earthquake resistant design of multistorey buildings the extended elastic seismic design loads are frequently calculated as the square root of the sum of the squares of the modal responses. The individual member forces are then determined using these seismic design loads. Previous research workers have examined the limitations of this technique and it is accepted as being generally applicable in practical design procedures. Recent computer analyses of projected New Zealand high-rise buildings have illustrated two conditions in which the “square root of the sum of the modal responses squared” rule is inapplicable. In this note these situations are described and suggestions are made of an alternative approach which may be adopted when deriving design loads in such cases.

On the question of setting the level of calculated impact and reliability of high-rise construction

2021 ◽  
pp. 43-56
Author(s):  
Dmitry M. Zhemchugov-Gitman ◽  
Lyubov V. Mozzhukhina ◽  
Alexander M. Uzdin
Keyword(s):  
Seismic Design ◽  
Earthquake Engineering ◽  
Seismic Loads ◽  
Seismic Action ◽  
Seismic Zoning ◽  
Reliability Factor ◽  
High Rise ◽  
Regulatory Documents ◽  
Reduction Coefficient ◽  
Damage Risk

The question of setting the seismic design input on high rise buildings is considered. The existing approaches to accounting for increased responsibility of high rise buildings in Russia are described. The proposal to reduce the probability of an acceptable building failure in proportion to the number of floors and Guideline proposals to increase the reliability factor and using maps of general seismic zoning are analyzed. The main disadvantages of methods described are indicated. It is shown that the current regulatory documents in the field of earthquake engineering do not provide the same reliability of designed structures in general and high-rise buildings in particular. The influence of seismic dangers in according with seismic zoning maps on the reliability of the designed objects is noted. An approach to generating the design input based on the permissible probability of its exceeding is considered using the example of five five-storey buildings and one 25-storey buildings. The probability of the admissible damage value included in the normative calculations is estimated. An estimate of the allowable failure probability on the value of acceptable damage (risk) is proposed under the assumption of a normal distribution of damage caused by earthquake. It is shown that the allowable failure probability decreases with decreasing acceptable damage only in the area of small damages. An approach to the assignment of seismic action based on an assessment of seismic risk has been formulated. The system of design coefficients used to calculate seismic loads on high-rise buildings is analyzed. It is noted that along with an increase in the design level of seismic acceleration, it is necessary to increase the coefficient, taking into account the low damping of high-rise buildings oscillations. At the same time, it is possible to significantly reduce the reduction coefficient by regulating the strains between the building floors.

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