Research on the Design Method of a Scale Model of ECC Reinforced Concrete Precast Shear Wall Structure

2016 ◽  
Vol 858 ◽  
pp. 29-33
Author(s):  
Jian Yang ◽  
Shu Ting Liang ◽  
Xiao Jun Zhu ◽  
Dong Yue Wu ◽  
Guang Yun Wang
Keyword(s):  
Reinforced Concrete ◽  
High Performance ◽  
Similarity Theory ◽  
Design Method ◽  
Precast Concrete ◽  
Shear Wall ◽  
Scale Model ◽  
Wall Structure ◽  
Model Structure ◽  
Precast Shear Wall

Engineered cementitious composite (ECC) is a class of high performance cementitious composites with pseudo strain hardening behavior and excellent crack control. Substitution of concrete with ECC can avoid the cracking and durability problems associated with brittleness of concrete. In this paper, it is aimed to design a scale model of ECC reinforced concrete precast shear wall structure. Referencing the prototype structure which is a precast concrete shear wall structure in Nantong, Jiangsu Province, China, the size similarity constant is taken as 1/2. Consulting the scale similarity conditions, the similarity similar constants representing material characteristics, geometrical features, and load characteristics are calculated using the strength similarity theory. Besides, the reinforcements in the model structure are calculated and analyzed. The diameters of reinforcing steel bars in the model structure are determined by the principle of similar size. Equivalent principle of yield bearing capacity are used when there is no corresponding reinforcement selection. The research results of this paper will provide valuable preferences for design and analysis of ECC reinforced concrete precast shear wall structure.

Application of Precast Concrete Shear Wall Structure in Residential Projects

2014 ◽  
Vol 638-640 ◽  
pp. 15-18
Author(s):  
Yong Wang ◽  
Xiao Xi Xia
Keyword(s):  
Structural Engineering ◽  
Precast Concrete ◽  
Residential Building ◽  
Shear Wall ◽  
Wall Structure ◽  
Practical Application ◽  
Residential Design ◽  
High Rise ◽  
Precast Shear Wall ◽  
Residential Projects

In order to adapt to the development of housing industrialization and the construction of energy-saving emission reduction requirements, research and application of precast concrete shear wall structure is becoming the hotspot in structural engineering. The DiJie international city B Neighborhood Project No. 8 residential building the form of engineering structure for precast shear wall structure. According to the practical application of prefabricated wall panels, balcony board, air conditioning board and stairs in residential projects, Introduced the key technology of component production, installation, cast structure node connection construction process using prefabricated in shear wall structure. In order to provide the reference for precast concrete shear wall high-rise residential design in the future.

Numerical Analysis of Seismic Behavior of a Concealed Bracing Connection for Precast Concrete Shear Walls

2014 ◽  
Vol 580-583 ◽  
pp. 1696-1699
Author(s):  
Qiao Jin ◽  
Wan Nan Guo ◽  
Wei Jian Zhao ◽  
Bin Zhang ◽  
De Peng Zhang
Keyword(s):  
Finite Element ◽  
Seismic Behavior ◽  
Precast Concrete ◽  
Shear Walls ◽  
Element Model ◽  
Shear Wall ◽  
Wall Structure ◽  
Element Analysis ◽  
Shear Connection ◽  
Precast Shear Wall

Aiming at the horizontal connection joint of the precast shear wall structure, this paper presents a new-type horizontal wall-to-wall connection. Based on the ABAQUS finite element analysis platform, an accurate finite element model of shear connection joints was built. By quasi-static numerical tests, the seismic behavior of the proposed connection of the precast shear wall system was analysed and compared with that of the traditional cast-in-place connection. The numerical results show that the seismic performance of the presented connection, such as deformability and energy-dissipation capacity, is slightly lower than that of its cast-in-place counterpart.

Shaking Table Test Study of Reinforced Concrete Shear Wall Structure

2017 ◽  
Vol 865 ◽  
pp. 306-312
Author(s):  
Zheng Li ◽  
Heng Zhou ◽  
Li Qin
Keyword(s):  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Shaking Table Test ◽  
Time History ◽  
Shear Wall ◽  
Shaking Table ◽  
Wall Structure ◽  
Model Structure ◽  
Fixed Base ◽  
Time History Response

A reduced-scale model of 7-story reinforced concrete shear wall structure is made. Shaking-table test of the model is carried out. Two test conditions are considered. In the first condition, fixed base is used. In another condition, soil structure interaction is considered. According to the experimental results, the dynamic characteristic and seismic performance of shear wall structure is studied. The acceleration time history response of model structure is obtained. Based on the time-history response, the dynamic characteristics of model structure are studied by spectrum analysis. The Finite Element Model of actural structure is established by ANSYS. The dynamic characteristics and seismic performance of actural structure are studied. By comparing the experiment results and numerical analysis results under the fixed-base condition, the rationality of the ANSYS model and numerical analysis method of are verified.

Experimental Investigation on Seismic Behaviors of High-Performance Concrete Shear Walls of Rectangular Section

2011 ◽  
Vol 255-260 ◽  
pp. 2439-2443 ◽  
Author(s):  
Xing Wen Liang ◽  
Jia Liang Kou ◽  
Ming Ke Deng
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Plastic Hinge ◽  
Shear Walls ◽  
Shear Wall ◽  
Wall Structure ◽  
Deformation Capacity ◽  
Damage Level ◽  
Wall Deformation ◽  
Hinge Zone

The paper explores the failure mode, failure mechanism and deformation capacity of medium-high and low-rise shear walls. The experimental results from load-tests of 5 high-performance concrete shear walls with 1.5 and 1.0 shear span ratio indicate that the shear walls deformation capacity benefits from several bar rings like a chain along boundary element in plastic hinge zone, showing that shear wall deformation capacity design is reliable to a certain extent, in that the plastic hinge zone often influences the damage level of shear walls. With the damage at different stages, the paper divides the performance of shear wall structure into three kinds: serviceability, life-safety and collapse-prevention. Accordingly, it is proposed that the performance controlling indicators for shear wall structures is composed of storey drift ratio and the rotation of plastic hinge zone, and also provides consult values for each performance level.

Analysis on the Ductility Performance of Reinforced Concrete Coupling Beams in Shear Wall Structure

2013 ◽  
Vol 788 ◽  
pp. 538-541
Author(s):  
Peng Zhang ◽  
Fu Ma
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Concrete Strength ◽  
Shear Wall ◽  
Wall Structure ◽  
Coupling Beam ◽  
Coupling Beams ◽  
Element Analysis ◽  
Reinforcement Scheme

Coupling beam, the first line resisting earthquake, is directly related to the overall performance of the shear wall structure. Using the large general finite element analysis software ANSYS, the coupling beam span-depth ratio is 2~3 different reinforcement scheme in finite element analysis. Analysis on the ductility performance of reinforced concrete coupling beams in shear wall structure in three fields: the concrete strength grade, the longitudinal reinforcement ratio and the stirrup ratio, provides a basis for the design of the structure and to provide a reference for similar studies.

scholarly journals Improving the Mechanical Performance of Shell Precast Concrete Blocks for Coastal Protection Structures of Hydraulic Works

2021 ◽  
Vol 11 (1) ◽  
pp. 6787-6791
Author(s):  
N. Viet Duc
Keyword(s):  
Reinforced Concrete ◽  
Service Life ◽  
High Performance ◽  
Mechanical Performance ◽  
Precast Concrete ◽  
Reference Beam ◽  
Concrete Cover ◽  
Fiber Reinforced Concrete ◽  
Bending Test ◽  
Coastal Protection

Although the use of concrete and reinforced concrete for construction has been widespread, more studies are needed on marine structures exposed directly to corrosive environments to prolong their service life. This paper proposes a new type of shell precast concrete block for coastal structures, studying a beam consisting of 15mm High-Performance Glass Fiber-Reinforced Concrete (HPGFRC) at the bottom and 45mm Traditional Concrete (TC) for the rest of the structure. Steel bar reinforcements were placed at the bottom with a concrete cover of 25mm to avoid abrupt failure. The strength classes of HPGFRC and TC were 60MPa and 30MPa respectively. A reference beam consisting of TC only was also prepared for comparison. The four-point flexural bending test results showed that the first cracking strength of the proposed beam was 20% higher, as HPGFRC performed better on tension than TC. Additionally, HPGFRC's maximum strength was 25% greater than TC's. Furthermore, HPGFRC possessed more durable characteristics such as waterproof grade, abrasion resistance, and shrinkage than TC, promising to protect the reinforcement from the aggressive marine environment and corrosion, prolonging the service life of the structure.

scholarly journals Flexural Behaviour Of ECC Coupling Slab In Coupled Shear Wall Structure

2021 ◽  
Author(s):  
Rizwan A. Issani
Keyword(s):  
High Performance ◽  
Failure Modes ◽  
Shear Wall ◽  
Wall Structure ◽  
Small Scale ◽  
Flexural Stiffness ◽  
Effective Width ◽  
Flexural Behaviour ◽  
Conventional Concrete ◽  
Coupled Shear Wall

Flexural stiffness or effective width of floor slab acting as coupling beam is very important for the analysis of Coupled Shear Wall (CSW) systems. New generation of high performance concretes provide an alternative to conventional concrete to enhance the performance of coupling slabs. This research investigates the flexural behaviour of coupling slabs incorporating Engineered Cementitious Composite (ECC) compared to conventional Self-Consolidating Concrete (SCC). The high strain capacity and low crack width makes ECC an ideal material for coupling slab. Non-linear coupling action of ECC slabs is investigated experimentally with small-scale models having variable geometric parameters under monotonic loading. The performance is judged based on moment-rotation response, flexural stiffness/effective width, deflection, cracking, strain development and failure modes. Design charts for flexural stiffness/effective width of coupling slabs are presented in pre-cracking/cracking/post-yielding stages. CSW systems with ECC are found stronger and ductile than their SCC counterparts confirming the viability of constructing such structures.

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