高強度螺紋鋼筋
預組工法
NTC
TRK Tongrong Steel feels that the Taiwan steel market has been slowing down since the 921 earthquake. In order to open another new milestone in Taiwan’s construction industry, it signed an MOU cooperation agreement with Japanese steel bar manufacturer TTK Tokyo Steel Co., Ltd. in early 2016. In addition to Outside of Japan, Tongei Steel is the number one overseas and the first manufacturer in Taiwan to cooperate in steel processing and steel cage production technology.
The rebars and splices manufactured by TTK Tokyo Steel Co., Ltd. have not only maintained the No. 1 market share in Japan for 20 years, but the "pre-assembly method" developed by TTK is also the industry's first. In view of manpower shortage, difficult construction quality management, and market demand for stronger, earthquake-resistant and spacious buildings, products manufactured by TTK Tokyo Steel Co., Ltd. have a 76% market share in domestic building construction projects in Japan, and more in the Kanto region. Up to 90% of the building utilization rate, its well-known domestic and foreign sites include Tokyo Station Marunouchi Building, Tokyo Dome Hotel, Tokyo Metropolitan Government Office, South Korea Gang Dong Project, Haeundae LCT Project, Singapore Marina One Project, Media Complex Project, China New construction of Chunhe and Nanke Building, etc.
Since 2012, Tokyo Iron & Steel has worked closely with National Taiwan University, National Earthquake Engineering Research Center and Taiwan Concrete Institute (TCI) to conduct various experimental projects to develop products that meet Taiwan's standard specifications and building styles.
We at Tongrong Steel hope that by standing on the shoulders of giants, Taiwan's steel construction industry has a better chance to see further.
TTK product introduction
High-strength rebar
(NEJI-TETSU-CON)
Steel type:
CNS
SD280,
SD280W,
SD420W,
SD490W,
SD550W,
SD690
TCI
SD550W
SD685
size:
D13 ~ D43
Connector
(For pre-assembly)
ACE-JOINT
Rebar mortar-filled connector
EPOCH-JOINT
Resin-filled connector for threaded steel bars
FREE-JOINT
Rebar absorbing pitch difference filling type connector
PLATE-NUT
Nut type anchor
POWER-RING
Welded closed type high-strength stirrups
SD685 / SD785
(For 預鑄用)
TOPS-JOINT
Sleeve type connector
BOLTOPS
Bolt-fixed mortar-filled connector
Introduction to TTK pre-assembly method
Labor saving effect
Different from the current traditional on-site lashing method in Taiwan, the TTK pre-assembly method uses a steel cage that is pre-made in the factory or on-site, and directly connects or laps in accordance with the progress of the project. Because the column and beam reinforcement cages of this construction method have been pre-assembled in advance, the main structure of the building can be completed by using the tower crane to connect them on the construction day. Therefore, the use of this construction method can not only save on-site construction time and manpower, the TTK product The special design will also greatly improve the current difficulty of on-site construction quality management in Taiwan.
In addition, the design of the TTK rebar splicer allows the length and eccentricity error of the rebar fitting. It is specifically aimed at solving the problem of uneven main rebar ends, inconsistent heights of assembled rebars, eccentricity and inclination of rebars during on-site construction. ......And other issues.
Taking a 10F RC structure building as an example, if the TTK pre-assembly method is used, the beam and column reinforcement time at the construction site will be reduced, so the construction period of each layer can be shortened by about 21% compared with the traditional lashing method. The number of operators can be reduced by about 30%.
As Taiwan’s densely populated cities face problems such as lack of new residential land, urban renewal and natural disasters, and other problems are similar to those of Japan, high-rise buildings using ultra-high-strength materials can be improved by improving quality and reducing volume. Therefore, the use of high-strength steel bars can not only provide more flexibility in space planning, increase urban green space, save materials and energy, and achieve the goal of environmental sustainability.