Thinking back to the 0403 earthquake, people in high-rise buildings felt particularly shaky, so the seismic performance of buildings has become a hot topic recently. So, how to make the super-high building earthquake? Two buildings were 70 floors, 53 floors of the Taipei Twin Star, known as the gateway to the western district of Taipei, the investment and development of the Grand Gateway Group announced that the use of Asia Cement (1102) under the development of the Asian ready-mixed development of concrete, the key to winning the selection of the "500 meters", the reason for this?
Located next to the Taipei Station, "Taipei Twin Star" after 12 years, five bids, after bribery, fraud, China's suspicions, bidding, etc., last November finally columns, two respectively 70 floors, 53 floors of the ultra-high building, then will become the gateway to the western district of Taipei.
However, with the recent earthquakes in Taiwan, it is a difficult problem for developers to find ways to cope with earthquakes in buildings that are more than 100 meters high. The Hongwei Group, which co-invested in the development of the Taipei Twin Star Building, chose the high-performance earthquake-resistant concrete developed by East Asia Ready Mix, a subsidiary of Asia Cement (1102), which weighs as much as 12,000 pounds, and has extremely strong compression resistance, which is rare in the industry.
One of the other key words in the East Asia pre-mix was "500 meters".
Pumping height 500 meters, still flowing like magma.
What does "500 meters" mean for concrete? Mr. Jin Chongren, General Manager of Asia East Ready Mix, told Vision that during the pumping process, the most feared thing about concrete is segregation, which is the separation of the concrete granules from the cement mortar, which may lead to cracks caused by temperature differences or the infiltration of groundwater, salt, or pollutants, which can lead to the rusting of concrete-covered reinforcement bars, affecting the solidity of the building body.
Jin Chongren said, Honghui compared to the Japanese specifications, originally only required to carry out the pumping height of 400 meters of pressure test, East Asia ready-mixed concrete test process, not subject to the influence of multiple reinforcement and formwork barrier, still like magma flow, uniform filling, "then they (Honghui) said, or you do look at the 500 meters, we are the same test, the results are just as good, so they will be using our products.
The performance was beyond the standard, which attracted the attention of Hongwei and led to the cooperation between the two parties.
This high-performance earthquake-resistant concrete, with a compressive strength of 12,000 pounds, is almost the ultimate in concrete, stronger than the 8,000 pounds of concrete used in Taipei 101. Not only can it be pumped up to a height of 500 meters, but the distribution process also lasts up to 120 minutes without collapsing, which will significantly increase the seismic capacity of the Taipei Twin-Star Building.
"Life Can't Be Repeated", Taipei Double Star's strictly selected building materials.
After the 0403 Hualien earthquake, once again evoking the earthquake fear that all the people of Taiwan do not want to face, Jin Chongren can not help but sigh: "Recently, the frequency of earthquakes, Hualien, there is a builder told me that everything in life can be repeated, but only one thing can not be, that is, life. He emphasized that concrete accounts for less than 10% of the construction cost, although the price of high poundage concrete is a little higher, but to strengthen the building structure, high-quality concrete is an indispensable element.
Echoing Kim Chong-jen's statement that "life can't be started over," Ms. Cui Meilan, General Manager of Grand Gateway Group, mentioned that because Taiwan is located in an area prone to typhoons and earthquakes, the selection of quality building materials is the most important thing in the development and planning of ultra-high-rise buildings, "Steel is the skeleton, and concrete is the muscle, we can see the skeleton growing, but in order to make the muscle strong, we need to use concrete that has passed international standards and strict inspections.
In addition to the Taipei Gemini Building, ADECO's ready-mixed concrete has been used in a number of high-profile buildings, including TSMC's Hsinchu plant, Taichung Commercial Bank's headquarters, Taichung Diamond, and Farglory's The one in Kaohsiung and Hsinyi A7 at the Taipei Skytower, both of which purchased 12,000 lbs. of concrete for their compressive strengths.
In addition, more and more super-high buildings are appearing all over Taiwan, also using East Asia ready-mixed concrete, Taichung Diamond, is a 38-storey building above ground, 10-storey office and hotel building below ground, in addition to the installation of a suspended swimming pool, there are also five sets of internal "dampers", more than the Taipei 101, nearly 600 pieces of diagonal bracing system, all to resist the frequent earthquakes.
Overseas there are also many seismic super-high building, such as the world's tallest, the Burj Khalifa in Dubai, with a total height of 828 meters, 163 floors above ground, 2 floors below ground, seismic more elaborate, the engineering team designed a hexagonal core column from the ground floor all the way up to the 156th floor, and then radial outward extension of the three wings, so that the building's cross-section looks like a Y-shape, and each section of the side of the wings can support each other to improve torsional strength to resist shear strength and stabilize the whole building. Each section of the flanks can support each other, increase torsional strength, resist shear force and stabilize the whole tower.
As buildings grow taller and taller, construction techniques must be upgraded to cope with natural phenomena such as strong winds, heavy rains and earthquakes - after all, "safety" is the highest guiding principle.
