| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction method for the asceismic reinforcement of an existing reinforced concrete bridge pier, which constructs a structure resisting to a shear stress caused on the boundary face between the existing bridge pier made of reinforced concrete and a new lined part when earthquake of so-called level 2 occurs, while remarkably reducing the construction term and costs. SOLUTION: In this construction method for asceismic reinforcement of the existing reinforced concrete bridge pier by surrounding the outer peripheral face of the existing bridge pier made of reinforced concrete with reinforced concrete to be newly placed around it, a key forming face is formed on a side face of the existing bridge pier made of reinforced concrete to form a multilayer shear key toward the axial direction of the bridge pier, and the side face of the existing bridge pier made of reinforced concrete including the formed key forming face is surrounded with the newly placed reinforced concrete to connect the existing bridge pier made of reinforced concrete and the newly placed reinforced concrete mutually through the formed multilayer shear key without using anchor dowel reinforcing bars. COPYRIGHT: (C)2011,JPO&INPIT
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