700미터 이상의 높이와 160층 이상으로 설계된 버즈두바이가 완공되면 버즈두바이는 인간이 건축한 건축물 중에서 최고높이의 건축물이 될 것이다. 바람의 동적효과를 완화하고 제어시키는 것이 가장 중요한 설계요소중의 하나이며, 설계초기의 공기역학적 형상과 풍공학에 대한 고려가 이러한 주상복합건물의 건축적 형상 및 디자인에 있어 큰 역할을 하는 반면, 건물의 구조시스템을 위한 재료 선택 또한 디자인의 중요한 요소이고 그 다음으로 세부적인 재료기술에 대한 평가 및 기술자 수급이 요구되어진다. 콘크리트는 콘크리트의 강도, 강성, 감쇠, 잉여력, 형틀성, 내화성, 시공성, 원가 등을 고려하여 선정된다. 이 논문은 콘크리트를 활용한 구조시스템을 적용하면서의 설계적으로 도전되었던 부분과 버즈두바이의 콘크리트공사의 초기계획에 대해 집중적으로 다룰 것이다.
700미터 이상의 높이와 160층 이상으로 설계된 버즈두바이가 완공되면 버즈두바이는 인간이 건축한 건축물 중에서 최고높이의 건축물이 될 것이다. 바람의 동적효과를 완화하고 제어시키는 것이 가장 중요한 설계요소중의 하나이며, 설계초기의 공기역학적 형상과 풍공학에 대한 고려가 이러한 주상복합건물의 건축적 형상 및 디자인에 있어 큰 역할을 하는 반면, 건물의 구조시스템을 위한 재료 선택 또한 디자인의 중요한 요소이고 그 다음으로 세부적인 재료기술에 대한 평가 및 기술자 수급이 요구되어진다. 콘크리트는 콘크리트의 강도, 강성, 감쇠, 잉여력, 형틀성, 내화성, 시공성, 원가 등을 고려하여 선정된다. 이 논문은 콘크리트를 활용한 구조시스템을 적용하면서의 설계적으로 도전되었던 부분과 버즈두바이의 콘크리트공사의 초기계획에 대해 집중적으로 다룰 것이다.
The Burj Dubai Project will be the tallest structure ever built by man; when completed the tower will be more than 700 meter tall and more than 160 floors. While the early integration of aerodynamic shaping and wind engineering considerations played a major role in the architectural massing and desi...
The Burj Dubai Project will be the tallest structure ever built by man; when completed the tower will be more than 700 meter tall and more than 160 floors. While the early integration of aerodynamic shaping and wind engineering considerations played a major role in the architectural massing and design of this multi-use/residential tower, where mitigating and taming the dynamic wind effects was one of the most important design criteria, the material selection for the structural systems of the tower was also a major consideration and required detailed evaluation of the material technologies and skilled labor available in the market at the time Concrete was selected for its strength, stiffness, damping, redundancy, moldability, free fireproofing, speed of construction, and cost effectiveness. In addition, the design challenges of using concrete for the design of the structural system components will be addressed. The focus on this paper will also be on the early planning of the concrete works of the Burj Dubai Project.
The Burj Dubai Project will be the tallest structure ever built by man; when completed the tower will be more than 700 meter tall and more than 160 floors. While the early integration of aerodynamic shaping and wind engineering considerations played a major role in the architectural massing and design of this multi-use/residential tower, where mitigating and taming the dynamic wind effects was one of the most important design criteria, the material selection for the structural systems of the tower was also a major consideration and required detailed evaluation of the material technologies and skilled labor available in the market at the time Concrete was selected for its strength, stiffness, damping, redundancy, moldability, free fireproofing, speed of construction, and cost effectiveness. In addition, the design challenges of using concrete for the design of the structural system components will be addressed. The focus on this paper will also be on the early planning of the concrete works of the Burj Dubai Project.
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문제 정의
The use of Concrete on Burj Dubai Project demonstrates another beginning of new era for concrete use in supertall building structures. This paper will focus on the structural concrete use and planning works for the Burj Dubai Project.
제안 방법
5, was performed to estimate the friction losses of the 600 m long steel pipe in order to confirm the concrete pump capacity, and the behavior of the concrete pumping system, including pumping system details, hydraulic pressure, concrete delivery pressure and number of strokes per minute. In addition, the test was performed to verify the concrete mechanical properties and flow characteristics after concrete pumping. Table 3 below provided a summary of the horizontal concrete pumping system, concrete types tested, concrete testing programs, and the expected concrete pressure.
The ACI Building Code does not address well the design of composite link beams and essentially there are no design provisions on how to detail the anchorage zones of the structural steel section. Several options were considered for the design of the anchorage of the structural steel elements; however, a more conservative approach was taken in designing such members using the cantilever bracket type of approach in accordance with a recommended design methodology. Special Analysis(using ABAQUS) was also performed at the UI, Urban Champaign to confirm the design strength and ductility of the composite members.
Since the construction planning is very extensive and cannot be covered in details in this paper, this paper will focus only on the planning and implementation of the concrete works.
Several options were considered for the design of the anchorage of the structural steel elements; however, a more conservative approach was taken in designing such members using the cantilever bracket type of approach in accordance with a recommended design methodology. Special Analysis(using ABAQUS) was also performed at the UI, Urban Champaign to confirm the design strength and ductility of the composite members. All the structural steel members embedded in the link were designed in accordance with the latest AISC-LRFD specifications.
The testing program was performed in accordance with ASTM C512 Creep and Shrinkage Test. The concrete was tested for both sealed and unsealed conditions, and loaded at 7 days and 28 days at 25% and 40% the tested concrete compressive strength. Because the high performance concrete mixes are designed for high strength, high durability, low water cement ratio, low shrinkage, and pumpability, most of the concrete mixes revealed very low shrinkage values and most of the shrinkage tend to occur very early.
0 meter. These tests are needed to confirm the construction sequence of these large elements and to develop curing plans that are appropriate for the project and through major daily and seasonal temperature fluctuations. See Fig.
이론/모형
The piles are typically 1,500 mm diameter, high performance reinforced concrete bored piles, extending approximately 45 meters below the base of the raft. All piles utilized self compacting concrete(SCC) with w/c ratio not exceeding 0.30, and placed in one continuous concrete pour using the tremie method. The final pile elevations are founded at -55 DMD to achieve the assumed pile capacities of 3,000tons.
The reinforced concrete framing were design in accordance with the ACI Building Codes provisions for flat plate construction. 3-dimensional finite element analysis program was used to confirm the deflection of the slab.
The reinforced concrete link beams were designed in accordance with the ACI Building Codes for both shear and bending moments. The shear design for the link beam considered also the strut and tie model for their design.
An extensive creep and shrinkage testing program was performed at CTL laboratory in the Skokie, Illinois, and USA and at Samsung Own Testing Laboratory in Seoul, Korea. The testing program was performed in accordance with ASTM C512 Creep and Shrinkage Test. The concrete was tested for both sealed and unsealed conditions, and loaded at 7 days and 28 days at 25% and 40% the tested concrete compressive strength.
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