Composite borders comprising of concrete-filled iron alloy tubular (CFST) pillars and iron alloy beam are being utilised more and more popularly in construction structures. In UK, the composite border organisations are often blended with strengthened solid shave partitions to pattern a high-rise construction system. However, there was seldom data on the seismic presentation of this kind of blended construction. Shaking table checks on two construction forms with 30 storeys comprising of composite borders and RC shave partitions were therefore offered in this paper. CFST pillars with circular and rectangle parts were utilised in the composite borders respectively. Three types of genuine earthquake notes, encompassing Taft (EW), El Centro (NS) and Tianjin swell with top accelerations of 0.2g, 0.4g, 0.6g, and 0.8g, were directed respectively to simulate distinct grades of earthquakes in the tests. It was discovered that the composite borders cooperated well with the centre RC shave partition structure under earthquakes, and the two construction forms displayed very good seismic performance.
Table of Content
ABSTRACTii
CHAPTER 01: INTRODUCTION1
Outline of the Study1
Problem Statement1
Rationale1
Aims and Objectives2
Significance3
Theoretical Frame work3
Limitation of the Study5
Ethical Concerns5
Reliability6
Validity7
CHAPTER 02: LITERATURE REVIEW8
CHAPTER 03: METHODOLOGY13
Research Design13
Mix Methodology13
Case Study16
Data Analysis17
Experimental Procedure18
Description of above20
Fabrication of the mixed structures22
Results27
Testing program27
Instrumentation31
CHAPTER 04: ANALYSIS AND DISCUSSION33
Analysis of Results33
Dynamic characteristics33
Discussion35
Damping ratio35
Acceleration response factor37
Storey drifts38
Shear force and storey acceleration41
Strain distributions45
Failure modes47
CASE STUDY49
CHAPTER 05: CONCLUSIONS AND RECOMMENDATIONS58
REFERENCES59
CHAPTER 01: INTRODUCTION
Outline of the Study
Concrete-filled steel tubular (CFST) columns had been widely used in civil engineering projects in the past decades, they have been proved to be inherently efficient in load carrying capacity, fire resistance, stiffness, ductility and energy absorption capacity, and fast in construction 1. ASCCS. Concrete filled steel tubes — a comparison of international codes and practices. In: ASCCS seminar. 1997.[1].
Problem Statement
Composite frames consisting of concrete-filled steel tubular (CFST) columns and steel beams (named CFST frames in this paper) are being used more and more popularly in building structures. In UK, CFST frame structures are often mixed with reinforced concrete (RC) shear walls to form a high-rise building system to resist both the vertical and lateral loads efficiently. However, there is still not sufficient information on the seismic design of this type of mixed structural system.
Rationale
In the past, there have been a large number of research studies on the performance of CFST columns. These literatures had been reviewed by [2], [3] and [4]. Several state of the art reports or papers were also published recently on CFST structures, such as [5], [6], [7] and 8. N.E. Shanmugam and B. Lakshmi, State of the art report on steel-concrete composite columns, J Constr Steel Res 57 (10) (2001), pp. 1041-1080. Article | PDF (268 K) | View Record in Scopus | Cited By in Scopus (50)[8]. There also had been some studies performed on the behaviour of CFST beam-to-column connections, such as [9] and [10]. But there is still very limited information on the CFST frames to RC shear wall mixed building systems under seismic ...