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1000 m Tall Jeddah Tower: Vertical Shortening Considerations

1000 m Tall Jeddah Tower: Vertical Shortening Considerations

(Issue of a magazine 4/2017, page 96)

Jeddah Tower will be the first man-made structure to reach a kilometer in height upon its completion in 2019.  From conception, it was clear that an all-concrete superstructure would present many advantages for a building of such unprecedented height and slenderness.  An all-concrete structure, however, did present many challenges that needed to be addressed in the system arrangement and through comprehensive analysis and design, among them vertical shortening effects due to the time-dependent creep and shrinkage of concrete.  This paper outlines and presents the engineering solutions developed by the authors regarding this complex concrete material phenomenon, while addressing the construction and regional challenges associated with realizing a concrete tower of this unprecedented scale.

Traveling Wave Similitude

Traveling Wave Similitude

(Issue of a magazine 4/2017, page 106)

The mixed-use Raffles City (RCH) development is located near the Qiantang River in Hangzhou, the capital of Zhejiang province, located southwest of Shanghai, China. The project incorporates retail, offices, housing and hotel facilities and marks the site of a cultural landscape within the Quianjiang New Town Area. The project is composed of two 250 m tall super high-rise twisting towers with a form of vibrant waves and a commercial podium and 3 storey basement car parking. It reaches a height of 60 stories, presenting views both to and from the Qiantang River and West Lake areas, with a total floor area of almost 400,000 m2. Composite moment frame plus concrete core structural system was adopted for the tower structures. Concrete filled steel tubular (CFT) columns together with steel beams reinforced concrete (SRC) beams form the outer moment frame of the tower structures. The internal slabs and floor beams are of reinforced concrete. This paper presents the engineering design and construction of this highly complex Project. Through the comprehensive discussion and careful elaboration, some conclusions are reached, which serve as the guidance and reference of the modern composite design and construction of similar free form hybrid mix use buildings.

Incheon Tower: Foundation Design in Reclamation Area

Incheon Tower: Foundation Design in Reclamation Area

(Issue of a magazine 4/2017, page 114)

A 151 storey super high-rise building located in an area of reclaimed land constructed over soft marine clay in Songdo, Korea is currently under design.  This paper describes the design process in devloping the foundation system of the supertall tower, which is required to support the large building vertical and lateral loads and to restrain the horizontal displacement due to wind and seismic forces. The behaviour of the foundation system due to these loads and foundation stiffness influence the design of the building super structure, displacement of the tower, as well as the raft foundation design.  Therefore, the design takes into account the interactions between soil, foundation and super structure, so as to achieve a safe and efficient building performance.

Akhmat Tower: Main Design Challenges and Engineering Survey

Akhmat Tower: Main Design Challenges and Engineering Survey

(Issue of a magazine 3/2017, page 104)

Last year we started series of publications on the design and construction of a unique and grand scale project in the center of Grozny – multi-functional megatall complex Akhmat Tower named as a tribute to the first President of the Chechen Republic, Hero of Russia, Akhmat-Hadji Kadyrov. The article discusses main design issues solved and engineering survey performed by leading world famous companies involved in project implementation by the developer –SMART BUILDING – with the project owner, MFC Akhmat Tower. The article deals with the complexities encountered when designing such types of facilities against the background of a limited legislative base, requirements for special technical specifications developed along with research and development support.

300 or 350. Continued Anniversary

300 or 350. Continued Anniversary

(Issue of a magazine 3/2017, page 114)

In 2017, the Ostankino Television Tower celebrates its 50th anniversary. On November 5, 1967, the State Acceptance Commission Act of the main tower of the country was signed and Moscowites saw the first television flow broadcasted from Ostankino. The unique designs of the TV Tower and the most interesting cases that occurred during its construction were told to us by one of the leading participants of this grandiose project - Vladimir Travush, Academician of the Russian Academy of Architecture and Building Sciences (RAASN).

What a Woman Wants, Wants…

What a Woman Wants, Wants…

(Issue of a magazine 2/2017, page 84)

It is generally admitted that construction is a very demanding process, requiring considerable mental, emotional, and most importantly physical strains. In conventional belief - it is not a business for woman. But there are exceptions, as in the team of the top execs of the Lakhta Center, where women occupy key posts: General Director, Construction Director, Development Director, Head of the Design Department ... And these are only those few with whom we are personally acquainted. This cannot but cause admiration. We publish Tall Buildings magazine for more than ten years, and in the intervening years we covered construction of many skyscrapers in different countries of the world, but for the first time faced with the situation that construction works of such a complex project led by the female persuasion. And they do it very successfully and can even be said exquisitely. Perhaps, because Lakhta itself has a feminine name, and women will always find a common language. Not surprisingly that the tower height has already crossed 80 floors - the northern beauty perfectly visible from afar fascinate not only by its impressive dimensions, but also graceful shapes. The new symbol of St. Petersburg finds its face, and it looks like it’s female.

The Angle of Inclination

The Angle of Inclination

(Issue of a magazine 2/2017, page 94)

Throughout history of existance, iconic architecture and exhibitions were inextricably linked. Many years ago, iconic structures such as Paris’ Eiffel Tower were built as visual symbols of exhibitions. In 2005, ADNEC (Abu Dhabi National Exhibitions Company) began to build a new state-of-the-art exhibition center which would be the largest in the Gulf region, and provide world class facilities for live events to flourish in Abu Dhabi.

Incheon Tower: Foundation Design in Reclamation Area

Incheon Tower: Foundation Design in Reclamation Area

(Issue of a magazine 2/2017, page 104)

A 151 storey super high-rise building located in an area of reclaimed land constructed over soft marine clay in Songdo, Korea is currently under design.  This paper describes the design process in developing the foundation system of the supertall tower, which is required to support the large building vertical and lateral loads and to restrain the horizontal displacement due to wind and seismic forces. The behaviour of the foundation system due to these loads and foundation stiffness influence the design of the building super structure, displacement of the tower, as well as the raft foundation design.  Therefore, the design takes into account the interactions between soil, foundation and super structure, so as to achieve a safe and efficient building performance.

Structural Design of China Zun Tower

Structural Design of China Zun Tower

(Issue of a magazine 2/2017, page 110)

The erecting 528-meter China Zun tower, which construction started in 2011, will be the tallest building in Beijing once built. The building design inspired by an ancient Chinese vessel “Zun”. The plan dimensions reduce gradually from bottom to the waist and then escalate bigger as it approaches to the top to form an aesthetically beautiful and unique geometry. To satisfy the structural requirement for seismic and wind resistance. The structure is a dual system composed of the perimeter mega structure which is made of composite mega columns, mega braces and belt trusses, and the reinforced-concrete core with steel plate embedded walls. Advanced parametric design technology is applied to find the most efficient outer perimeter structure system. The seismic design basically follows a mixed empirical and performance-based methodology which was verified by the shaking table test and other specimen lab tests. The tower is now half-way in its construction.