Vulnerability Analysis of Small High-Rise Shear Wall Buildings

2011 ◽  
Vol 255-260 ◽  
pp. 416-420
Author(s):  
Jian Zhu ◽  
Ping Tan
Keyword(s):  
Response Spectrum ◽  
Damping Ratio ◽  
Element Model ◽  
Shear Wall ◽  
Western China ◽  
Wall Structure ◽  
Seismic Reliability ◽  
High Rise ◽  
Fiber Wall ◽  
Set Up

In order to evaluate seismic reliability and vulnerability of the typical small high-rise shear wall buildings in Western China region, the sample finite element analytical small high-rise shear wall structure has been built in considering of fiber element model and fiber wall element model. Meantime stochastic response spectrum of accelerations with 5% damping ratio have being set up based on China Seismic Code as input seismic excitation, dynamic history analysis was being used to determine earthquake resistant capability of sample structures. Vulnerability curves of four performance levels are also be drawn after carefully analysis based PGA index.

Research of Mechanical Property on High-Rise Building Shear Wall-Influence of Border Concealed Column Toward Shear Wall Stiffness

2011 ◽  
Vol 243-249 ◽  
pp. 274-278
Author(s):  
Xin Hui Zhao ◽  
Jin Li
Keyword(s):  
Finite Element ◽  
Shear Wall ◽  
Analysis Procedure ◽  
Wall Structure ◽  
The Finite Element Method ◽  
Element Analysis ◽  
High Rise ◽  
Modeling Analysis ◽  
Wall Stiffness ◽  
Set Up

This article is probed into on the issue that the influence of border concealed column toward shear wall stiffness. Charge example indicates finite element that this text set up calculate model is acceptable. It is used the finite element method basic theory to compile finite element analysis procedure with four points rectangles unit to solve this problem. It can calculate the shear wall with concealed column’s displacement under the wind load to check the result it whether can be satisfied the design request. Using this procedure, this article carries on the finite element modeling analysis on a ten-floor building shear wall structure system. The procedure’s result and the software of ANSYS’s result tallies well, and it also be compared with the simplification computation’s result.

Research on the Stiffness Optimization of the Reinforced Concrete’s Shear Wall Structure Based on the Earthquake Response Spectrum

2012 ◽  
Vol 166-169 ◽  
pp. 2066-2069
Author(s):  
Meng Nan Zhang ◽  
Yan Ying Li
Keyword(s):  
Optimization Design ◽  
Response Spectrum ◽  
Element Model ◽  
Shear Wall ◽  
Structure Design ◽  
Wall Structure ◽  
Earthquake Effect ◽  
Stiffness Optimization ◽  
Wall Structures ◽  
Displacement Angle

Optimization design is the significant development in the structure design which could adopt the better from several plans in the same task. This paper build the finite element model of sixteen-floors shear wall structures, which control the deformation as the restraint condition, to make the thickness of shear wall as the design variable and to take the light structure as the objective function in order to execute the optimization. After the optimization, the bottom and internal stress become higher, whereas the centralized stress will occur in the corner and the middle of the rooftop and the opening of the shear wall. The horizontal earthquake of the various floors presents the curve like S with the increasing of the floors. And the floor which occur earthquake effect and the biggest displacement angle is in the middle of the structure and the whip tip effect will emerge in the top of the structure.

Post-Yielding Behavior of Hinge-Supported Wall with Buckling-Restrained Braces in Base

2019 ◽  
Vol 13 (03n04) ◽  
pp. 1940003 ◽  
Author(s):  
Xiaoyan Yang ◽  
Jing Wu ◽  
Jian Zhang ◽  
Yulong Feng
Keyword(s):  
Response Spectrum ◽  
Time History ◽  
Shear Wall ◽  
Seismic Intensity ◽  
Nonlinear Time History Analysis ◽  
Wall Structure ◽  
Superposition Method ◽  
Structural Wall ◽  
Design Response Spectrum ◽  
Buckling Restrained Braces

A novel structural wall with hinge support and buckling restrained braces (BRBs) set in the base (HWBB) is studied. HWBB can be applied to precast manufacturing due to its considerable ductility and the separate loading mechanism in HWBB–frame structure. In elastic stage, BRBs play a brace role to make the hinged wall resist horizontal forces like a shear wall. BRBs dissipate seismic energy through plastic and hysteresis effects after yielding and the damage is only concentrated in BRBs. The performance of an HWBB is equivalent to a shear wall structure with excellent ductility and stable energy dissipation capacity. Numerical analysis indicates that the hinged wall body in the HWBB well controls the deformation mode of the structure, avoiding the concentration of story drifts, thereby protecting the remaining parts of the structure. It is revealed that the moments of the wall body will generate significant increments after BRBs yielding, and the Seismic Intensity Superposition Method is proposed to calculate the moments. In this method, nonlinear response of an HWBB can be regarded as the sum of the responses of two elastic corresponding structures excited with two parts of the seismic intensity, respectively. Modes and moments equations of the hinged wall with uniform distribution of stiffness and mass are derived, and calculation results coincide with that of the nonlinear time history analysis (NHA). For a more general case, the white noise scan method is proposed to solve the structure’s natural characteristics and to further calculate the response. Finally, the post-yielding moment calculation method and the process based on design response spectrum are proposed. It is proved that the moments from proposed Seismic Intensity Superposition Method can envelop most of the moments from NHA, and it is a good estimate of the response of HWBB in nonlinear stage.

Optimal Design Research of Shear Wall Structure for Board High-Rise Residential Building

2010 ◽  
Vol 163-167 ◽  
pp. 2309-2317
Author(s):  
Er Lei Wang ◽  
Zhe An Lu ◽  
Lang Zhou
Keyword(s):  
Design Principle ◽  
Design Research ◽  
Residential Building ◽  
Shear Wall ◽  
Wall Structure ◽  
Mathematics Model ◽  
High Rise ◽  
Character Structure ◽  
Criterion Method ◽  
Optical Structure

Take a High-rise Residential Building in Wuhan as research object, in assigns the construction plan under the premise, the optical mathematics model of the shear wall is established. Based on research of structure dynamic characteristics, displacement, mechanic character, structure measure, uses the criterion method and the exhaustion method, design principle of board high-rise residential building is conducted from the optical of shear wall arrangement，furthermore, site condition and seismic precaution intensity influence to the optical structure is analyzed.

Optimization and Suggestions of Design for RC Frames with Special-Shaped Columns Based on Chinese Specification

2013 ◽  
Vol 351-352 ◽  
pp. 3-6
Author(s):  
Ming Dong Wang ◽  
Zheng Yin Ni
Keyword(s):  
Progressive Collapse ◽  
Seismic Energy ◽  
Shear Wall ◽  
Special Care ◽  
Wall Structure ◽  
Cantilever Beams ◽  
Concept Design ◽  
High Rise ◽  
Rc Frames

To optimize the design of RC frames with special-shaped columns, some special care should be given to the design of this type of structure. Designers should attach great importance to concept design by considering the structure as a whole to assimilate seismic energy. Ductility has to be guaranteed both for the structure and for the members. In high-rise buildings, frame-shear wall structure is preferred. Safety of L-shaped Corner columns is to be improved or otherwise cantilever beams can be designed to prevent progressive collapse.

Analysis of Shape Control Factors for the Overall Optimization Design of High-Rise Frame Shear Wall Structure

2013 ◽  
Vol 423-426 ◽  
pp. 1226-1229
Author(s):  
Ting Yu Mei ◽  
Lang Wu
Keyword(s):  
Structural Optimization ◽  
Shape Control ◽  
Optimization Design ◽  
Shear Wall ◽  
Wall Structure ◽  
Width Ratio ◽  
High Rise ◽  
Control Factors ◽  
Length Width ◽  
Building Plane

From the basic theory of structural optimization design and shape control factors, the characteristics and control requirements for control factors of high-rise frame shear wall structure optimization have been introduced in this paper. The research and analysis showed that: the structure system and building height, length-width ratio of building plane, and the vertical height-width ratio play an important role on structural optimization.

Seismic Performance Analysis under Different Conditions of Location for Shear Wall Frame Shear Structure

2013 ◽  
Vol 477-478 ◽  
pp. 784-787
Author(s):  
Yi Zhen Yang ◽  
Hong Gan
Keyword(s):  
Seismic Performance ◽  
Shear Wall ◽  
Structure Design ◽  
Wall Structure ◽  
Lateral Stiffness ◽  
Structure Form ◽  
High Rise ◽  
Wall Stiffness ◽  
Shear Structure ◽  
Structure Research

Frame shear wall structure as a high-rise building one of the most widely used structure form, has good seismic performance and high bearing capacity, the frame shear wall structure research focused on the study of shear wall quantity more, pay attention to consider shear wall quantity and the intrinsic relationships between shear wall lateral stiffness and to seek the optimal design of shear wall stiffness, ignores the position of the shear wall, on the whole architecture of the influence of lateral stiffness, and can go, is set the location of the shear wall is difficult to study, this article will focus on the research of location of shear wall structure seismic performance, provide reference for the future of this kind of structure design.

The Seismic Behavior and Failure Form in Structure of Frame-Shear Wall of High-Rise Concrete Residential Building

2012 ◽  
Vol 166-169 ◽  
pp. 1290-1294
Author(s):  
Xiao Yu Liu ◽  
Hui Hong Dong
Keyword(s):  
Seismic Behavior ◽  
Failure Modes ◽  
Residential Building ◽  
Shear Wall ◽  
Frame Structure ◽  
Wall Structure ◽  
High Rise ◽  
Shear Structure ◽  
Residential Market ◽  
Mechanics Characteristics

The high-rise concrete residential market has been a gradually urban mainstream in recent years, and frame-shear wall structure is more used for high-rise residential structures now. This kind of structure has the advantage that the combination of frame and shear wall make the space free and flexible, and therefore the whole structure has considerable rigidity. The structure can not only satisfy the needs for people living in comfortable, but also has good dynamic and static load bearing capacity. This paper analyzed the mechanics characteristics of the structure and summarized the two kinds of main failure modes of shear wall and frame structure in earthquake. On this basis, the main principles are put forward to improve the seismic behavior of the shear wall. And further some of specific measures and suggestions which can improve the seismic performance for the frame-shear structure are introduced.

scholarly journals Research on the Design and Detailing of a Re-constructional High-rise uilding Structure Project Reconstruction

2014 ◽  
Vol 8 (1) ◽  
pp. 450-454 ◽  
Author(s):  
Ling Yuhong ◽  
Lin BiaoYi ◽  
Ke Yu ◽  
Chen QingJun
Keyword(s):  
Reinforced Concrete ◽  
Shear Wall ◽  
Wall Structure ◽  
Strip Foundation ◽  
Reinforced Concrete Frame ◽  
Engineering Structures ◽  
Concrete Frame ◽  
High Rise ◽  
Concrete Pile ◽  
Pile Cap

This paper introduced the reconstruction practice and detailing of a high-rise reinforced concrete frame-shear wall structure. To fully utilize the old structure and meet the requirement of the reconstructed structure, certain measures have been put forward. The enlarging of concrete pile cap and adding strip foundation-beam were used to support the new added shear wall. The reconstruction concept detailing of the roof of basement, the enlarging of the beam or column sections and the application of the inclined column are introduced. The whole structure analysis shows that the reconstructed structure is safe enough to meet all the requirement of the designing code and the settlement observation shows that the deformation of the whole structure in gravity is small. The paper shows the design and detailing of the reconstructed engineering is effective and will be valuable to the similar engineering structures.

scholarly journals Wind-Induced Response Control of High-Rise Buildings Using Inerter-Based Vibration Absorbers

2019 ◽  
Vol 9 (23) ◽  
pp. 5045 ◽  
Author(s):  
Qinhua Wang ◽  
Haoshuai Qiao ◽  
Dario De Domenico ◽  
Zhiwen Zhu ◽  
Zhuangning Xie
Keyword(s):  
Damping Ratio ◽  
Element Model ◽  
Tuned Mass Damper ◽  
Induced Response ◽  
Vibration Absorbers ◽  
Acceleration Response ◽  
Vibration Mitigation ◽  
High Rise ◽  
Mass Damper ◽  
Good Trade

The beneficial mass-amplification effect induced by the inerter can be conveniently used in enhanced variants of the traditional Tuned Mass Damper (TMD), namely the Tuned Mass-Damper-Inerter (TMDI) and its special case of Tuned Inerter Damper (TID). In this paper, these inerter-based vibration absorbers are studied for mitigating the wind-induced response of high-rise buildings, with particular emphasis on a 340 m tall building analyzed as case study. To adopt a realistic wind-excitation model, the analysis is based on aerodynamic forces computed through experimental wind tunnel tests for a scaled prototype of the benchmark building, which accounts for the actual cross-section of the structure and the existing surrounding conditions. Mass and stiffness parameters are extracted from the finite element model of the primary structure. Performance-based optimization of the TMDI and the TID is carried out to find a good trade-off between displacement- and acceleration-response mitigation, with the installation floor being an explicit design variable in addition to frequency and damping ratio. The results corresponding to 24 different wind directions indicate that the best vibration mitigation is achieved with a lower installation floor of the TMDI/TID scheme than the topmost floor. The effects of different parameters of TMD, TMDI and TID on wind-induced displacement and acceleration responses and on the equivalent static wind loads (ESWLs) are comparatively evaluated. It is shown that the optimally designed TMDI/TID can achieve better wind-induced vibration mitigation than the TMD while allocating lower or null attached mass, especially in terms of acceleration response.

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