Earthquakes are cyclical, and major builders have also built high-standard moats in terms of construction methods and building materials.
Earthquakes are frequent in Taiwan, and the safety of residential structures has become the focus of home buyers. In recent years, Taichung has continued to promote super-high-rise residential and large-scale construction projects, and builders’ investment in seismic design, structural external audits and construction quality have also attracted attention. From the seventh phase of super-high-rise luxury homes to the Beitun Phase 14 pre-sale project, developers have successively introduced high-strength steel bars, earthquake-control equipment and high-toughness structural construction methods. Residential safety considerations have extended from compliance with regulatory requirements to structural design, material selection and construction management.
Taichung Phase 7 is an area where super high-rise residential buildings and high-standard buildings are concentrated, and the index cases have different approaches to structure and earthquake control design. "Baoxi Tianrui" located on Fuhuiyuan Road adopts a pure steel frame structure and is equipped with Japan's KYB earthquake control system; "Taichung Drill" is planned to have 10 underground floors and an excavation depth of 34.6 meters. It uses the reverse driving method and BT-630 steel, and is equipped with BRB damping diagonal braces, TMD, TSD and micro dampers and other earthquake control equipment to meet the earthquake and wind resistance requirements of super high-rise buildings.
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In terms of the pre-sale market, Shunyuan Construction launched the "Shunyuan Wuye" in the intercontinental section of Beitun Phase 14. It uses SD550W high-strength weldable steel bars and uses polyurea resin waterproofing materials for the waterproofing of the top floor and first-floor landscape areas. The elastic and ductile properties of the material are used to reduce the risk of damage to the waterproof layer caused by vibration, temperature differences and environmental erosion, and reduce the possibility of water vapor penetrating into the reinforced concrete structure.
"Double Oak Park 2658", also located in Beitun Phase 14, is developed and planned by Double Oak Park. The entire project adopts SRC steel frame reinforced concrete structure. It is the third steel frame residential project launched by the industry in Beitun after "2925" and "2045". As for the "Chongde Branch" jointly developed by Kanton Construction and Foundation Construction, it adopts New RC high-toughness structural design, with SD550 high-strength steel bars and 180-degree double stirrup configuration to strengthen the restraint effect of the column core.
Earthquake-resistant design has also gradually been extended to residential buildings with a height of about 15 floors. "Fenggu Pule" in Beitun has obtained the earthquake-resistant label. The building adopts a symmetrical rectangular configuration to reduce the torsional effect under earthquakes. The underground engineering uses 25.4-meter retaining columns, a beamless design and SD420 high-tensile steel bars. It is also equipped with a full casing construction method to reduce the disturbance of the excavation to the surrounding site. The column and beam stirrups are arranged at a distance of 10 centimeters.
Ke Yuchang, associate director of Shunyuan Construction, pointed out that after the 921 earthquake, Taiwan's building seismic resistance codes have been revised many times. Due to the large building volume of super high-rise residential buildings, structural design and construction requirements have also been relatively higher in the face of earthquake horizontal lateral forces, shear forces and strong winds. In addition to the design stage, which requires an external structural review by a third-party professional technicians association, on-site steel bar lashing, concrete pouring and raw material quality are also related to the safety of the building structure.
