| Title |
Analysis of case studies of braced wall system using PS wale |
| Authors |
Choi Jae-Won ; Yoon Jie-Eon ; Kim Gwang-Hee ; Kang Kyung-In |
| Keywords |
Excavation work ; Braced wall system ; PS-wale |
| Abstract |
The increasing land price and lack of space requires deeper and larger excavation in urban construction site. For this reason, the excavation is getting more important. The braced wall system is commonly used in the supporting system of deep excavation. But this system has some disadvantages; (1) it creates obstruction in the excavation work space; (2) it requires schedule delay and the high cost. Both are caused by the narrow support spacing of the strut. Therefore, the strut spacing should be extended to overcome these disadvantages. PS-Braced wall system, which has the??prestressed wale, was suggested to overcome this narrow strut spacing. The purpose of this research was to introduce PS-Braced wall system and compare it with the braced wall system in terms of the constructablity and the cost through 4 case studies. According to each case, the quantity of material(H-beam) and the cost of retaining wall is reduced by 43.45% and 23.7% on average. And PS-wale method will reduce obstruction, delay and accidents in excavation work by extending the strut spacing. |