机构：
武汉二航路桥特种工程有限责任公司;中交基础设施养护集团有限公司;湖北省交通规划设计院股份有限公司;
中文关键词：
桥梁工程;;跨线桥;;快速移除;;支撑;;提吊;;施工技术
中文摘要：
针对路桥改扩建工程中既有跨线桥拆除时存在的效率低、能耗高、安全性差的问题,以及不中断桥下交通的要求,提出基于地面支撑和SPMT的大净高跨线桥快速下放与移除技术,并在舟山S73省道跨G329国道匝道桥第3联(4×20) m预应力混凝土连续箱梁桥快速拆除工程中得到成功应用,实现了大净高跨线桥快速分段提吊下放和SPMT驮运的安全快速移除,明显缩短了路桥改扩建工程的工期,施工期间的桥下既有道路不中断交通,显著降低对既有交通的影响、能耗和环境污染。
英文篇名：
Fast Removing Technique for Viaducts Based on Ground Support and SPMT
英文作者：
ZHU Shifeng;GAO Wang;HE Peng;ZHU Cixiang;CCCC Road & Bridge Special Engineering Co.,Ltd.;CCCC Infrastructure Maintenance Group Co.,Ltd.;Hubei Provincial Communications Planning and Design Institute Co.,Ltd.;
英文摘要：
In the reconstruction and extension of roads and bridges,some existing viaducts have to be demolished. However,the conventional demolition methods do not work efficiently,which make high energy consumption and low safety performance. Moreover,the demolition should not interrupt the traffic under the viaduct. In this case,the combined use of ground supports and SPMT (self-propelled modular transporter) to rapidly lower and remove the viaducts with great vertical clearance was proposed. The technique was successfully used to the rapid demolition of the third continuous unit of a ramp bridge crossing national highway G329 on the provincial highway S73. The part was a prestressed concrete continuous box beam structure with four spans of 20 m and with great vertical clearance. During the demolition,the structure was cut into sections,lifted and lowered onto the SPMT to move away. The use of the technique accelerated the demolition,shortened the construction schedule of the reconstruction and extension project of roads and bridges,and caused no disruption to the traffic below. The engineering practice proves that the technique proposed can reduce the influence of demolition of existing viaducts on the traffic,and energy consumption and environmental pollution are also decreased.
英文关键词：
bridges;;viaducts;;rapid removal;;supports;;lifting;;construction
