Engineering Mechanics in Whipping Effect of High-Rise Building

2014 ◽  
Vol 540 ◽  
pp. 173-176 ◽  
Author(s):  
Lu Jiang Yang ◽  
De Wen Liu ◽  
Zhong Li Guo ◽  
Jing Li ◽  
Bi Hui Dai
Keyword(s):  
Horizontal Displacement ◽  
Seismic Load ◽  
Maximum Displacement ◽  
Vertical Stiffness ◽  
High Rise ◽  
High Rise Building ◽  
Building Models ◽  
Cantilever Structure ◽  
Displacement Angle ◽  
Engineering Mechanics

When the vertical stiffness is fixed up uneven, and there is some prominence in top, or he vertical stiffness changes suddenly, the amplitudethe and horizontal displacement of the top in high-rise building will increases fiercely, this phenomenon is whipping lash effect. It is harmful to the whipping lash effect in the top of the high-rise building when it is forced, moved and deformed, the phenomenon of whipping lash effect is evident in high-rise building. In order to research the essence of the whipping lash effect and avoid it, firstly the whipping lash effect is introduced, also we have distinguished the whipping lash effect and cantilever structure by analysising the non-statically structure and statically structure. Then we have made three different high-rise building models which are put on the dead load, live load and horizontal seismic load, also we have gotten the maximum displacement, maximum displacement angle, velocity, acceleration, shear force and moment, then we have analysised and compared displacement, movement and force. Finally, we have concluded:“The vertical stiffness should be fixed up consistency and changed uniformly in order to reduce the influence of the whipping lash effect in the high-rise building.

Engineering Mechanics in High-Rise Building with Irregular Planner

2014 ◽  
Vol 540 ◽  
pp. 193-196
Author(s):  
Lu Jiang Yang ◽  
De Wen Liu ◽  
Zhong Li Guo ◽  
Jing Li ◽  
Bi Hui Dai
Keyword(s):  
Architectural Design ◽  
Seismic Load ◽  
Building Structure ◽  
Maximum Displacement ◽  
High Rise ◽  
Unit Structure ◽  
General Plan ◽  
Structural Calculation ◽  
Displacement Angle ◽  
Force Displacement

Plane functional layout and total controlling plan of the general plan in the building always are abnormal. Furthermore the floor size and horizontal stiffness in the same floor are different tremendously, otherwise there are many dislocation floor in the same floor, according to different function in the same floor. Irregular plane in the building may happen according to the situation above. It is harmful to the force,, displacement and deformation in irregular plane. In order to research the essence of the irregular plane and avoid it, firstly the irregular plane is introduced, also we have distinguished stretch joint, settlement joint and, seismic joint according to the force theory of structure, and then we have used PKPM structural calculation program to build model, simulating the force in two improved models on the dead load, live load and horizontal seismic load, we have gotten the maximum displacement, maximum displacement angle, velocity, acceleration, shear force and moment, then we have analysised and compared displacement, movement and force. Finally, we have concluded:“Architectural design should be adopted by regular plane designing rule，it should not be adopted by irregular plane designing rule；for the building structure which body is complex and irregular plane，the designer should install the seismic joint in the appropriate parts according to actual needs，make the irregular building structure into several regular unit structure which could resist the horizontal load.”

Evaluation of Mean Wind Force Coefficients for High-Rise Building Models with Rectangular Cross-Sections and Aspect Ratio’s of 6 and 8

2014 ◽  
pp. 597-612
Author(s):  
A. Abraham ◽  
S. Chitra Ganapathi ◽  
G. Ramesh Babu ◽  
S. Saikumar ◽  
K. R. S. Harsha Kumar ◽  
...  
Keyword(s):  
Cross Sections ◽  
Wind Force ◽  
Force Coefficients ◽  
High Rise ◽  
High Rise Building ◽  
Building Models

Dilatation of the High-Rise Building by Inserted Field

2017 ◽  
Vol 738 ◽  
pp. 130-139
Author(s):  
Olga Ivankova ◽  
Marian Stellmach ◽  
Lenka Konecna
Keyword(s):  
Wind Load ◽  
Main Topic ◽  
Seismic Load ◽  
Seismic Acceleration ◽  
High Rise ◽  
High Rise Building ◽  
Structural Solutions

The dilatation of the high-rise building by inserted field is the main topic of this paper. This building contains of two “towers” with different heights (8-storey and 25-storey), which are linked by inserted field. The description of the building and applied loads are shortly mentioned. The paper is mainly focused on the importance of the dilatation and its types, the modelling of inserted field and its structural solutions. The comparisons of horizontal forces due to the wind load and seismic load are presented at the end. The solution was recalculated for four seismic areas in Slovakia, where different values of basic seismic acceleration ar are. Also, the maximum horizontal deflections calculated for three alternatives of the building (without dilatation, with continuous dilatation 50 mm located between two “towers” passing through the foundation, with dilatation by inserted field between two “towers”) due to static wind load are presented here.

Analysis on Switch Node Finite Element of a High-Rise Building

2014 ◽  
Vol 578-579 ◽  
pp. 20-24
Author(s):  
Ling Huang
Keyword(s):  
Finite Element ◽  
Space Utilization ◽  
Vertical Stiffness ◽  
High Rise ◽  
High Rise Building ◽  
Special Analysis ◽  
Concrete Materials ◽  
Transfer Method ◽  
Fresh Transfer

In order to satisfy the requirement of building elevation, the setback change is carried out for the structure of a high-rise building. In order to minimize the influence of transfer story on building functions, the setback part is provided with the method of partial lapping column transfer. Lapping column transfer is a relatively fresh transfer method, which can increase the building space utilization, reduce the consumption of concrete materials, and avoid the vertical stiffness mutation of high-rise building effectively. However, the stress for lapping column transfer is rather complex, and this text makes a special analysis to the transfer story and node.

scholarly journals Dynamic Behavior of A High-Rise Building Under Seismic Loads for Different Bearing Frame Types

2018 ◽  
Vol 28 (4) ◽  
pp. 180-189
Author(s):  
Volodymyr Sakharov ◽  
Oleksandr Lytvyn ◽  
Vasyl Pidlutskyi
Keyword(s):  
Dynamic Behavior ◽  
Strain State ◽  
System Analysis ◽  
Mode Shapes ◽  
Seismic Load ◽  
Seismic Loads ◽  
High Rise ◽  
High Rise Building ◽  
Different Types ◽  
Vertical Bearing

Abstract Paper presents the results of dynamic behavior analysis of a high-rise building under seismic loads as part of the “base-foundation-building” system. Analysis covers different types of reinforced concrete construction with girder frame and non-girder frame. Using modal analysis, paper presents differences in mode shapes and frequencies caused by the presence or absence of girders. Paper also demonstrates variations in the stress-strain state for the vertical bearing structures under the seismic load for different frame types.

Sign in / Sign up

Export Citation Format

Share Document