• 대한건축학회논문집:구조계
• /
• 제35권7호
• /
• pp.147-156
• /
• 2019

The purpose of this study is to consider structural issues and analyze construction sequences when constructing hanging floors supported by Mega truss. Since suspended structures were supported by the Mega truss, vertical load on suspended structures was needed to transfer from low to high. Deflection management of structures was the primary point under construction. The results of this study were as follows; The steel structures, which has relatively lighter self-weight, were constructed upwards after the base floor steel truss erection. Concrete Placing, which has relatively heavier self-weight, were performed in two phases to minimize structure's deflection. Slab was placed downwards from the top floor to lower floor whereas column was places upwards. Deflection measurements were carried out at every construction sequences.

• 전산구조공학
• /
• 제15권1호
• /
• pp.51-59
• /
• 2002

• 건축구조
• /
• 제9권1호
• /
• pp.38-41
• /
• 2002

• 한국콘크리트학회:학술대회논문집
• /
• 한국콘크리트학회 2008년도 추계 학술발표회 제20권2호
• /
• pp.261-264
• /
• 2008

국제화가 가속화됨에 따라 국가 단위가 아닌 도시 단위의 경쟁력 제고의 필요성이 대두되면서 도시재생에 대한 관심이 높아지고 있다. 도시재생의 위한 공간의 효율성 극대화와 고부가 가치를 갖는 공간의 창출을 위해서는 입체 복합 공간구조 시스템의 개발에 관한 연구가 필요하다. 본 연구에서는 이론과 시공 사례를 바탕으로 하여 입체 복합 공간구조에 대한 개념을 정립하고 이를 위한 구조시스템에 대한 분석을 실시하였다. 그 결과 입체 복합 공간을 구성하기 위해서는 규모 및 용도에 탄력적으로 대응할 수 있는 Mega structure 시스템이 타당할 것으로 판단되었고, 이에 따라 Mega structure 모델의 구조해석을 수행하였다. 본 연구에서는 해석을 위해 기본 Mega structure 모델을 제안하였으며, 제안된 모델의 Mega column과 Mega beam의 형태 및 위치를 변화시켜가며 구조해석을 수행하였다. 본 연구에 따르면 Mega structure 시스템이 실제 입체 복합 공간을 실현시킬 수 있는 충분한 성능을 발휘한다고 판단되었다.

• 한국건축시공학회지
• /
• 제2권1호
• /
• pp.55-58
• /
• 2002

• 국제초고층학회논문집
• /
• 제5권3호
• /
• pp.233-241
• /
• 2016

This paper describes the structural solution for the design of a 29-story high-rise tower, which features a large office space above the Kabukiza Theatre. Kabuki is a type of Japanese traditional drama, and Kabukiza is the home building of Kabuki. GINZA KABUKIZA is the fifth generation of the Kabukiza Theatre, the first of which was built in 1889. In order to support 23 stories of office space above the theater - featuring a large void in plan - two 13-meter-deep mega-trusses, spanning 38.4 meters, are installed at the fifth floor of the building. Steelwork is used as a primary material for the structure above-ground, and a hybrid response control system using a buckling-restrained brace and oil damper is adopted in order to achieve a high seismic performance. This paper also describes the erection process of installing hydraulic jacks directly above the mega-truss at column bases, in order to keep the structure above the truss level during construction. The temple architecture of the previous Kabukiza is carefully restored by incorporating contemporary light-weight materials supported by steelwork.

• 국제초고층학회논문집
• /
• 제6권3호
• /
• pp.271-277
• /
• 2017

Safety, livability, and efficiency are the three prominent problems of tall buildings, which are also the severe challenges to designers. We proposed the idea of building the sky town to solve these problems, which can be summarized in two sentences, one is tall building multi-storised, and another one is vertical facilities municipal-infrastructurised. The tall building can be horizontally cut into several multi-storey buildings by some large platforms. The platform extends a certain width to block the fire from spreading. Tall buildings are connected together as a group. One of them is a traffic core, which is used for vertical transportation and MEP. It connects to traffic center such as metro, while most of the other tall buildings' cores can be very much released, so as to achieve maximum efficiency of floor usable area and to give good traffic organization. By combining traffic core, platforms, and multi-storey buildings' inner traffic, a transportation network is formed. Finally, we refer to the design of Raffles City Chongqing to make a sketch of sky town.

• 국제초고층학회논문집
• /
• 제3권3호
• /
• pp.173-183
• /
• 2014

Nakanoshima Festival Tower is a 200 m high-rise complex building which contains a renewed 2700-seat capacity concert hall known as "Festival Hall" and offices including headquarter of a news company. In order to build up an office tower on the hall which requires large open space, a giant truss system is employed. The giant trusses being composed of mega-trusses and belt-trusses support all the building weight above them and transfer the load to the outside of the hall. The building also requires high seismic resistance performance for a news company. Application of mid-story seismic isolation enables the building to satisfy high-level seismic resistance criteria.

• 국제초고층학회논문집
• /
• 제1권3호
• /
• pp.221-228
• /
• 2012

Shanghai Tower is a super high-rise building of 632 m height with 'mega frame-core- outrigger truss' structure system. Due to the complexity and irregularity of structure, shaking table test was carried out to investigate its seismic performance. A 1/40 scaled test model was designed, built and tested on shaking table under earthquake of small, moderate and large levels. The experimental results showed that the structure can meet the requirements of Chinese codes and reach scheduled performance objectives. Elastic and plastic time-history analysis on the structure were carried out and the results were compared to experimental results. Based on the research results some suggestions were proposed to contribute favorable effect on the seismic capacity of the structure.

• Earthquakes and Structures
• /
• 제7권4호
• /
• pp.571-586
• /
• 2014

This paper presents experimental and numerical study on seismic performance of a super tall steel tower structure. The steel tower, with a height of 388 meters, employs a steel space truss with spiral steel columns to serve as its main lateral load resisting system. Moreover, this space truss was surrounded by the spiral steel columns to form a steel mega system in order to support a 12-story platform building which is located from the height of 230 meters to 263 meters. A 1/40 scaled model for this tower structure was made and tested on shake table under a series of one- and two-dimensional earthquake excitations with gradually increasing acceleration amplitudes. The test model performed elastically up to the seismic excitations representing the earthquakes with a return period of 475 years, and the test model also survived with limited damages under the seismic excitations representing the earthquakes with a return period 2475 years. A finite element model for the prototype structure was further developed and verified. It was noted that the model predictions on dynamic properties and displacement responses agreed reasonably well with test results. The maximum inter-story drift of the tower structure was obtained, and the stress in the steel members was investigated. Results indicated that larger displacement responses were observed for the section from the height of 50 meters to 100 meters in the tower structure. For structural design, applicable measures should be adopted to increase the stiffness and ductility for this section in order to avoid excessive deformations, and to improve the serviceability of the prototype structure.