Experimental assessment of the shear strength of an asymmetric steel composite beam with web openings

2005 ◽  
Vol 32 (2) ◽  
pp. 314-328 ◽  
Author(s):  
Young K Ju ◽  
Do-Hyun Kim ◽  
Sang-Dae Kim
Keyword(s):  
Shear Strength ◽  
Composite Beam ◽  
Residential Buildings ◽  
Shear Capacity ◽  
Structural System ◽  
Web Openings ◽  
Wide Beam ◽  
High Rise ◽  
Beam Shear ◽  
Steel Composite

The number of high-rise buildings has greatly increased in Korea, and storey height is a significant component of tall residential buildings due to the limited city area. To reduce storey height, the wide beam has been adopted in some projects in Seoul such as Trump World, Galleria Palace, and Richencia. The joints between the wide beam and the core wall were too narrow to place the reinforcement, however. This paper investigates a newly developed structural system called the innovative, technical, economical, and convenient hybrid system (iTECH system). The iTECH system has an asymmetric steel assembly with web openings, where the top plate is welded on top of inverted structural "tees" whose cut is referred to as a "honeycomb" type. Both sides of the web and the slab are filled with cast-in-place concrete. The shear capacity was experimentally evaluated and verified, with parameters determined by factors that shared the shear strength of the iTECH beam. The steel web, inner concrete panel, and outer concrete panel contributed to the shear strength of the iTECH beam. The shear stirrup did not contribute much to the shear strength, however, and therefore a design equation using the steel web and inner concrete panel was suggested.Key words: composite beam, shear capacity, monotonic test, high-rise building.

scholarly journals Efficiency of Vierendeel Girder, Post-tensioned Girders and Steel Beams for Long Cantilevers in Buildings

2021 ◽  
Vol 9 (1) ◽  
pp. 79-85
Author(s):  
M. Faisal Fadlelbari
Keyword(s):  
Composite Beam ◽  
Steel Beams ◽  
Structural System ◽  
Efficient System ◽  
Cantilever Length ◽  
Steel Composite ◽  
Post Tension ◽  
Structural Engineers ◽  
Economical Choice ◽  
Post Tensioned

Cantilevers are a part of our life, they are everywhere: bridg–es, building’s balconies, traffic signs, car parking shades even the aircraft’s wings. The long cantilevers of the buildings always present as a big challenge to structural engineers in their practice life. The structural behavior of these cantilevers depends on a several factors, such as rigidity of the slab, rigidity of columns or walls, span continuity... etc. But the real dilemma lies in the economical choice. This paper focused on the cantilever’s structural analysis according to the used structural. Moreover, it shows a comparison between three structural system choices: Vierendeel Girder, Post - Tensioned Girders and Steel Composite Beam in a graph. The objective of this paper is to give a guideline to the structural engineers to choose the optimum system of the building cantilevers according to the factors mentioned earlier. At the end, the paper illustrated the Vierendeel girder is the most efficient system for cantilevers. Accordingly, recommendations result on that up to 4.0 m cantilever length steel beams will be enough, for more than 4.0 and less than or equal to 6.0 m post-tension is recommended, and for more than 6.0 m cantilever we should use Vierendeel girder.  

Research on Reinforcing Methods of Continuous Steel-Concrete Composite Beams with Web Openings

2014 ◽  
Vol 919-921 ◽  
pp. 1952-1957
Author(s):  
Long Qi Li ◽  
Dong Hua Zhou ◽  
Wen Yuan Liao
Keyword(s):  
Mechanical Properties ◽  
Composite Beam ◽  
Local Stability ◽  
Composite Beams ◽  
Shear Capacity ◽  
Vertical Shear ◽  
Engineering Practice ◽  
Web Openings ◽  
Web Opening ◽  
Moment Functions

By considering the four secondary moment functions ,which are developed according to virtual plastic stress distribution at the perforated section of continuous composite beam. reinforced opening proved to be necessary and reliable .Several reinforcing methods are reserched. mechanical properties are compared with FE results in different reinforced continuous composite beam.The result indicates that the bending and vertical shear capacity of continuous composite beam with web opening can be effectively enhanced to a certain extent. In addition,stiffness and local stability at web opening area are also increase. Effective reinforcing method is presented and can be used in engineering practice.

scholarly journals Evaluation of Shear Capacity According to Transverse Spacing of Wide Beam Shear Reinforced with Steel Plate with Openings

2015 ◽  
Vol 28 (3) ◽  
pp. 259-266 ◽  
Author(s):  
Jin Woong Choi ◽  
Min Sook Kim ◽  
Bong-Seob Choi ◽  
Young Hak Lee ◽  
Heecheul Kim
Keyword(s):  
Steel Plate ◽  
Shear Capacity ◽  
Wide Beam ◽  
Beam Shear

Nonlinear Simulation Analysis on Steel Concrete Composite Beam with Rubber Aggregate

2014 ◽  
Vol 1044-1045 ◽  
pp. 71-74
Author(s):  
Jing Ping Yang
Keyword(s):  
Energy Consumption ◽  
Crack Resistance ◽  
Composite Beam ◽  
Concrete Slab ◽  
Composite Beams ◽  
Shear Capacity ◽  
Element Analysis ◽  
Nonlinear Simulation ◽  
Steel Composite ◽  
Rubber Concrete

In order to investigate mechanics performance of rubber concrete steel composite beam, nonlinear analysis on four steel concrete composite beams with different amount of rubber has been carried out using finite element analysis software, and the influence of rubber concrete to mechanical properties of composite beam was explored. The results show that ductility, crack resistance of rubber concrete slab, shear capacity of shear connector for rubber concrete steel composite beam are improved significantly compared with ordinary steel concrete composite beams. Along with the increase of rubber content, the energy consumption of composite beams gradually increases, while the ultimate bearing capacity decreases with small amplitude. As a kind of green environmental protection material Rubber Aggregate concrete has the characteristics of good ductility, crack resistance is strong, energy consumption is obvious and good wear resistance.

scholarly journals The structural design of Kunshan Xintiandi super high-rise office building

2021 ◽  
Vol 248 ◽  
pp. 03011
Author(s):  
Xiaomeng Zhang ◽  
Wenting Liu ◽  
Yilun Zhou ◽  
Xiao yang ◽  
Ziao Liu
Keyword(s):  
Structural Design ◽  
Mechanical Performance ◽  
Residential Buildings ◽  
Investment Project ◽  
Second Phase ◽  
Structural System ◽  
Commercial Building ◽  
Tube System ◽  
Core Tube ◽  
High Rise

The Kunshan urban investment project includes 1 office tower, 4 high-rise residential buildings and 1 high-rise commercial building. Each monomer shares a large basement chassis, a total of three basement floors. This design is the second phase (5# super high-rise and corresponding basement).The height of the structure is more than 140 meters, which is a concrete-filled steel tubular frame + core tube system. The selection and structure of the structural system are analyzed, and the mechanical performance of the structure is verified through calculation and analysis.

Study on New Reinforcing Method of Composite Beam with Web Openings under Negative Moment

2014 ◽  
Vol 919-921 ◽  
pp. 243-246 ◽  
Author(s):  
Wen Yuan Liao ◽  
Dong Hua Zhou ◽  
Chun Xiu Han
Keyword(s):  
Composite Beam ◽  
Engineering Application ◽  
Element Model ◽  
Web Openings ◽  
New Methods ◽  
Web Opening ◽  
Negative Moment ◽  
Steel Composite ◽  
The Common ◽  
The Finite Element Model

Due to web opening, stiffness and strength of steel composite beam decrease significantly. The common reinforcing method is setting stiffeners around the opening section; the paper presents two methods: herringbone stiffener and diamond stiffener. The finite element model is established with both material and geometrical non-linearity. Compared with other common methods, these two new methods are effective. Some reasonable suggestions are proposed for engineering application.

Assessing the effect of night ventilation on PCM performance in high-rise residential buildings

2019 ◽  
Vol 43 (3) ◽  
pp. 229-249 ◽  
Author(s):  
Shahrzad Soudian ◽  
Umberto Berardi
Keyword(s):  
Thermal Energy ◽  
Phase Change Materials ◽  
Positive Impact ◽  
Residential Buildings ◽  
Solidification Rate ◽  
Operative Temperature ◽  
High Rise ◽  
Ventilation Strategies ◽  
Night Ventilation ◽  
The Impact

This article investigates the possibility to enhance the use of latent heat thermal energy storage (LHTES) as an energy retrofit measure by night ventilation strategies. For this scope, phase change materials (PCMs) are integrated into wall and ceiling surfaces of high-rise residential buildings with highly glazed facades that experience high indoor diurnal temperatures. In particular, this article investigates the effect of night ventilation on the performance of the PCMs, namely, the daily discharge of the thermal energy stored by PCMs. Following previous experimental tests that have shown the efficacy of LHTES in temperate climates, a system comprising two PCM layers with melting temperatures selected for a year-around LHTES was considered. To quantify the effectiveness of different night ventilation strategies to enhance the potential of this composite PCM system, simulations in EnergyPlusTM were performed. The ventilation flow rate, set point temperature, and operation period were the main tested parameters. The performance of the PCMs in relation to the variables was evaluated based on indoor operative temperature and cooling energy use variations in Toronto and New York in the summer. The solidification of the PCMs was analyzed based on the amount of night ventilation needed in each climate condition. The results quantify the positive impact of combining PCMs with night ventilation on cooling energy reductions and operative temperature regulation of the following days. In particular, the results indicate higher benefits obtainable with PCMs coupled with night ventilation in the context of Toronto, since this city experiences higher daily temperature fluctuations. The impact of night ventilation design variables on the solidification rate of the PCMs varied based on each parameter leading to different compromises based on the PCM and climate characteristics.

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