Home Technical Experience
Yi-Sen-Yuan Residential Complex with Variable BalconyLocated near Tamsui fisherman's wharf, this project differs from a traditional building framework; the building surface will change and wave like plants in the ocean.
The scaffoldings stands and positioning with a variable appearance outer wall is difficult, as well as a special structure, which is rarely adopted in domestic buildings.
Double-O-Tube(DOT) Shield Tunnel MethodDACIN was awarded the Taiwan Expressway CA450A tender at International Airport MRT System. The project starts from the Taipei MRT Sanchong Station and ends on Beimen Station. A shield tunnel with a total 1,584 m length shall be drilled by Double-O-Tube (DOT) method, which was used for the first time in the Taipei MRT system.
The tunnel passes beneath the Danshui River, the both side flood-prevention embankments, the bridge pier of HuanHe Expressway viaduct, and under the Taipei Hospital Cheng Chung Branch .The length of the tunnel underneath Danshui River is approximately 820 m, making it the longest cross-river shield tunnel in the Taipei MRT system’s history.
The DOT method not only reduces 1/3 construction period, but also reduce road occupation time less than traditional shield tunnel method.
Underpinning for Viaduct FoundationDACIN was awarded the Taiwan Expressway CA450A tender at International Airport MRT System. The Double-O-Tube(DOT) shield tunnel launches from Chunghsiao Bridge in Sanchong District of New Taipei City, than passes beneath the pile foundation of the bridge pier P64 of Huanhe Expressway viaduct. Therefore, the bridge pier P64 shall be underpinned before the shield machine can pass. Automatic monitoring and data acquisition system were setup during construction period. The real time data was available via networks.
CK570B MRT project passes beneath the exsting cut-and-cover tunnels of the Taiwan High Speed Rail and Taiwan Railway.DACIN was awarded the Section Contract CK570B of the Taipei MRT Hsinchuang Line. The project starts from the intersection of Xinsheng S Road and Chunghsiao E Road in Taipei City, runs beneath Songjiang Road, turns left at Minquan E Road, and ends at the intersection of Minquan W Road and Chengde Road. In total, the project’s length is approximately 3,549 m and includes four underground stations and four shield tunnel segments.
One of the features of this project is that the shield tunnel passes beneath the cut-and-cover tunnels of the Taiwan High Speed Rail and Taiwan Railway (uner the Civic Blvd). Therefore, the shield machine must drill through the lower part of the existing retaining structures of the cut-and-cover tunnels. The challenge is that no impact to the operation or safety of the Taiwan High Speed Rail and Taiwan Railway is allowed during tunneling. The shield machine’s unique design includes eaves for the outgoing part, as well as directly performing ground treatment in the chamber for the soils ahead. The challenge is that no impact on the operation or safety of the Taiwan High Speed Rail and Taiwan Railway is allowed during tunneling.
Pre-assembled reinforcement cageThe pre-assembled reinforcement cage is an application that uses an “integrated stirrup”. Compared to the in-situ assembled method, the strength resistance is improved while the operational error is decreased. This method also benefits from constructing a column reinforcement cage higher than 6 m. The DACIN company has been applying the pre-assembled construction method for years to satisfy all of our customers’ wishes with regard to quality and efficiency.
Reconstruction work of old buildings (Yuan-San No. 1)With regard to the reconstruction work of old buildings (four floors underground, with a depth of 19.2 meters), the building is located near the night bazar and school with busy traffic. The ground has weak geology, and the digging depth of the new building is less than the basement depth of the existing building; therefore, the design unit plans to reserve the existing slurry wall and carry out construction of the new structure using the top-down method. The challenge is not only how to set the foundation piles and hang the steel columns but also how to construct the basement of the new building while simultaneously removing the old building. Secret and detailed construction plans and qualified site management are the keys to this project’s success.