A method for demolishing a superstructure of a cast-in-situ reinforced concrete bridge with single box and multi-chambers and spanning the line

• Main Authors: ZHOU ZHENHUA, WU KUN, HU FENGQIANG, ZHAN XINYU
• Format: Patent
• Language: Chinese; English
• Published: 15.01.2019
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; OR VIADUCTS

A method for demolishing a superstructure of a cast-in-situ reinforced concrete bridge with single box and multi-chambers and spanning the line comprises the following steps: A, enclosing and seal theperiphery of the bridge to protect underground pipelines; B, demolishing the superstructure of the cast-in-situ reinforced concrete bridge with single box and multi-chambers; C, synchronously chiseling and removing that flange plates of each span box gird; D, dismantling the remaining non-cantilever box body: firstly, dismantling the non-cantilever box body of the span of the overpass bridge, andthen sequentially dismantling the non-cantilever box body of the other span bridges; E, synchronously chiseling and removing that pier top beam on both sides of each bridge span. The method is simplein steps, reasonable in design, simple in construction and good in use effect, and can quickly complete the demolition construction process of the upper structure of the cast-in-situ reinforced concrete bridge, and is safe and