Frame - Shear Wall Structures Subjected to Vertical Deformation and the Shrinkage and Creep of Concrete Relations

2012 ◽  
Vol 166-169 ◽  
pp. 3403-3407
Author(s):  
Lin Pan ◽  
Li Wei Zhang
Keyword(s):  
Shear Wall ◽  
Wall Structure ◽  
Vertical Deformation ◽  
Concrete Creep ◽  
Analysis And Design ◽  
High Rise ◽  
Wall Structures ◽  
Internal Forces ◽  
The Difference ◽  
The Impact

Frame - shear wall structural system are widely used in high-rise buildings . During the construction period , a different pressure than due to the loads and their respective axis , resulting in the existence of vertical deformation of the difference between the components , this difference will frame - shear wall structure beams internal forces have an important impact . The existence of concrete creep and shrinkage , so that the impact of further increase . A frame - shear wall structure high-rise buildings for the analysis object , using the finite element method , and analyze the impact of contraction of the construction process of concrete creep frame - shear wall structure of the vertical deformation and internal forces , a number of recommendations for the rationalization for structural analysis and design practical , in order to service engineering

Study on the shear wall structure with combined form of replaceable devices

2017 ◽  
Vol 21 (9) ◽  
pp. 1327-1348
Author(s):  
Cong Chen ◽  
Renjie Xiao ◽  
Xilin Lu ◽  
Yun Chen
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Performance Comparison ◽  
Wall Structure ◽  
Structural Part ◽  
Coupled Shear Wall ◽  
Wall Structures ◽  
Strength And Stiffness ◽  
Energy Dissipated ◽  
Resilient Structure

Structure with replaceable devices is a type of earthquake resilient structure developed to restore the structure immediately after strong earthquakes. Current researches focus on one type of the replaceable device located in the structural part that is most likely to be damaged; however, plastic deformation would not be limited in a specific part but expand to other parts. To concentrate possible damage in shear wall structures, combined form of replaceable devices was introduced in this article. Based on previous studies, combined form of replaceable coupling beam and replaceable wall foot was used in a coupled shear wall. Influences of the dimension and location of the replaceable devices to the strength and stiffness of the shear wall were investigated through numerical modeling, which was verified by experimental data. Performance comparison between the shear walls with one type and combined form of replaceable devices and the conventional coupled shear wall was performed. In general, the shear wall with combined form of replaceable devices is shown to be better energy dissipated, and proper dimensions and locations of the replaceable devices should be determined.

scholarly journals Impact of Insulation Type and Thickness on the Dynamic Thermal Characteristics of an External Wall Structure

2018 ◽  
Vol 10 (8) ◽  
pp. 2835 ◽  
Author(s):  
Jihui Yuan
Keyword(s):  
Time Lag ◽  
Thermal Characteristics ◽  
Thermal Capacity ◽  
Wall Structure ◽  
External Wall ◽  
Thermal Transmittance ◽  
Wall Structures ◽  
The Impact ◽  
Time Lead ◽  
Surface Factor

The dynamic thermal characteristics of external wall structures are directly related to indoor thermal comfort and energy savings in buildings; they are also complicated and worth investigating. Thermal insulation in external wall structures has become a popular topic of investigation in the domain of building energy efficiency. This study aims to find the impact of insulation type and thickness on the dynamic thermal characteristics of external wall structures using a homogeneous multi-layer building external wall structure and three types of insulation materials that are widely used in Japan. The impact of insulation type and thickness on seven thermal characteristics of external walls, including thermal transmittance, decrement factor or amplitude attenuation, time lag, thermal admittance, time lead for thermal admittance, surface factor, and thermal capacity, was evaluated by numerical methods in this study. It was shown that insulation type and thickness would have a significant effect on thermal transmittance, decrement factor and time lag, but yield no significant change in thermal admittance, time lead for thermal admittance, surface factor, and the thermal capacity of external wall structures.

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.

Nonlinear Dynamic Analysis of Prefabricated Concrete Shear Wall Structure under Seismic Excitation

2017 ◽  
Vol 873 ◽  
pp. 259-263
Author(s):  
Hao Zhang ◽  
Zi Hang Zhang ◽  
Yong Qiang Li
Keyword(s):  
Finite Element ◽  
Kinematic Hardening ◽  
Nonlinear Dynamic Analysis ◽  
Shear Wall ◽  
Seismic Excitation ◽  
Wall Structure ◽  
Base Shear ◽  
Wall Structures ◽  
Story Drift

The dynamic behavior of the prefabricated and cast in situ concrete shear wall structures subjected to seismic loading is investigated by finite element method. This paper adopted a prefabricated concrete shear wall in a practical engineering. The Precise finite element models of prefabricated and cast in situ concrete shear wall were established respectively by ABAQUS. The damaged plasticity model of concrete and kinematic hardening model of reinforcing steel were used. The top displacement, top acceleration, story drift ratio and base shear forceof prefabricated and cast in situ concrete shear wall under different seismic excitation were compared and analyzed. The earthquake resistant behaviorsof the two kinds of structuresare analyzed and compared. Results show that the performances of PC structure were equal to the cast-in-situ ones.

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.

Mechanism of the Frame-Supported Masonry Shear-Wall Structure with Inter-Story Isolation

2013 ◽  
Vol 351-352 ◽  
pp. 765-770
Author(s):  
Lei Lu ◽  
Ying Zhou
Keyword(s):  
Numerical Analysis ◽  
Shear Wall ◽  
Mixed System ◽  
Wall Structure ◽  
Stiffness Ratio ◽  
Mass Ratio ◽  
Isolation System ◽  
Wall Structures ◽  
Theoretical And Numerical Analysis ◽  
Masonry Shear Wall

Many frame-supported masonry shear-wall structures were observed severely damage in Wenchuan Earthquake. In this paper, an inter-story isolation system is implemented in such structures to mitigate the hazard of the earthquake. The mechanism of the mixed system is demonstrated by theoretical and numerical analysis. And it is concluded that the mass ratio, the below-stiffness ratio, the yield shear of isolated layer and the up-stiffness ratio are the main parameters whose effects are discussed separately. For the design convenience, a set of fitting equations of these parameters are provided.

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