Effects of grout sleeve defects and their repair on the seismic performance of precast concrete frame structures

2021 ◽  
Vol 242 ◽  
pp. 112619
Author(s):  
Xiangmin Li ◽  
Shun Xiao ◽  
Rundong Gao ◽  
Kent A. Harries ◽  
Zhuolin Wang ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Precast Concrete ◽  
Frame Structures ◽  
Concrete Frame

scholarly journals Experimental Study of a New Precast Prestressed Concrete Joint

2018 ◽  
Vol 8 (10) ◽  
pp. 1871 ◽  
Author(s):  
Xueyuan Yan ◽  
Suguo Wang ◽  
Canling Huang ◽  
Ai Qi ◽  
Chao Hong
Keyword(s):  
Energy Dissipation ◽  
Seismic Performance ◽  
Prestressed Concrete ◽  
Precast Concrete ◽  
Concrete Strength ◽  
Frame Structure ◽  
Loading Test ◽  
Concrete Frame ◽  
Concrete Joints ◽  
Precast Prestressed Concrete

Precast monolithic structures are increasingly applied in construction. Such a structure has a performance somewhere between that of a pure precast structure and that of a cast-in-place structure. A precast concrete frame structure is one of the most common prefabricated structural systems. The post-pouring joint is important for controlling the seismic performance of the entire precast monolithic frame structure. This paper investigated the joints of a precast prestressed concrete frame structure. A reversed cyclic loading test was carried out on two precast prestressed concrete beam–column joints that were fabricated with two different concrete strengths in the keyway area. This testing was also performed on a cast-in-place reinforced concrete joint for comparison. The phenomena such as joint crack development, yielding, and ultimate damage were observed, and the seismic performance of the proposed precast prestressed concrete joint was determined. The results showed that the precast prestressed concrete joint and the cast-in-place joint had a similar failure mode. The stiffness, bearing capacity, ductility, and energy dissipation were comparable. The hysteresis curves were full and showed that the joints had good energy dissipation. The presence of prestressing tendons limited the development of cracks in the precast beams. The concrete strength of the keyway area had little effect on the seismic performance of the precast prestressed concrete joints. The precast prestressed concrete joints had a seismic performance that was comparable to the equivalent monolithic system.

Dynamic load test on progressive collapse resistance of fully assembled precast concrete frame structures

2020 ◽  
Vol 214 ◽  
pp. 110675 ◽  
Author(s):  
Yun Zhou ◽  
Xiang Hu ◽  
Yilin Pei ◽  
Hyeon-Jong Hwang ◽  
Taiping Chen ◽  
...  
Keyword(s):  
Dynamic Load ◽  
Progressive Collapse ◽  
Precast Concrete ◽  
Load Test ◽  
Frame Structures ◽  
Concrete Frame ◽  
Collapse Resistance ◽  
Dynamic Load Test

Literature Review of Precast Concrete Frame Structures in Civil Engineering

2012 ◽  
Vol 568 ◽  
pp. 3-6
Author(s):  
Ke Wei Ding ◽  
Xiang Zhang
Keyword(s):  
Literature Review ◽  
Seismic Behavior ◽  
Civil Engineering ◽  
Precast Concrete ◽  
Engineering Application ◽  
Frame Structure ◽  
Frame Structures ◽  
Structure System ◽  
Concrete Frame ◽  
Performance Research

As construction industrialization is springing up in our country, precast concrete frame structure,as a result,has been developing rapidly. Based on a host of articles about precast concrete frame structure system at home and abroad,it,in this paper,summarized and prospected the latest stress performance research of precast concrete frame structure and up-to-date engineering application. Further more, total assembled node and seismic behavior of precast concrete frame structure is also pointed out as what is needed to study in the future.

scholarly journals Evaluation of Seismic Performance of Reinforced Concrete Frame Structures in the Context of Big Data

Complexity ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-14
Author(s):  
Du Guangqian ◽  
Zheng Meng ◽  
Wang Shijie
Keyword(s):  
Big Data ◽  
Reinforced Concrete ◽  
Fault Tolerance ◽  
Seismic Performance ◽  
Frame Structures ◽  
Cloud Platform ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
High Scalability ◽  
Reinforced Concrete Frame Structures

In the era of big data, the efficient use of idle data in reinforced concrete structures has become a key issue in optimizing seismic performance evaluation methods for building structures. In this paper, based on the evaluation method of structural displacement seismic performance and based on the characteristics of high scalability and high fault tolerance of the cloud platform, the open source distributed and storage features of the Hadoop architecture cloud platform are introduced as a subproject of Apache Nutch project, Hadoop cloud platform. With features such as high scalability, high fault tolerance, and flexible deployment, the storage platform is secure, stable, and reliable. From the evaluation of the seismic performance of newly-built buildings and existing damaged buildings, according to the structural strength-ductility theory of the structure, the building structure resists earthquakes with its strength and ductility and buildings are divided into four categories. Due to the influence of time or seismic damage on the structure of reinforced concrete frame structures, their material properties are often deteriorating. Using the distributed computing design concept to efficiently process big data, a dynamic evaluation model for the seismic performance of reinforced concrete frame structures is established. A project of a 10-story reinforced concrete frame structure was selected for calculation and analysis; the engineering example was used to verify the accuracy and efficiency of the model, and the seismic performance of the floor was analyzed. It can be seen that the initial stiffness index of the structure is not sensitive to the damage location of the structure. The platform based on the concept of distributed computing big data processing can effectively improve the efficiency and accuracy of the evaluation of reinforced concrete frame structures.

Seismic Performance Analysis of Reinforced Concrete Frame Structures Based on Computational Mechanics

2021 ◽  
Author(s):  
Taochun Yang ◽  
Yanjun Li ◽  
Xiaohui Zhai
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Frame Structure ◽  
Frame Structures ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Multi Scale ◽  
Scale Modeling ◽  
Reinforced Concrete Frame Structure ◽  
Multi Scale Modeling

In order to study the degradation law and seismic performance of reinforced concrete frame structure with the extension of service time under normal service environment, the multi-scale modeling of corroded reinforced concrete frame is carried out by using the general finite element analysis software ABAQUS. The correctness of the multi-scale modeling method is verified by the experimental data of corroded reinforced concrete members and single frame. The pushover analysis and elastic-plastic time history analysis of a four story reinforced concrete frame structure are carried out by using a multi-scale model. Then the seismic response and damage of RC frame structures with different service time are compared. The experimental results show that the established seismic performance model of reinforced concrete frame structure is more practical in practical application and can meet the research requirements.

Sign in / Sign up

Export Citation Format

Share Document