箱梁预制安装及跨路安全防护技术.doc

预制安装及跨路安全防护技术
摘 要  施工安全关系到每个建筑施工人员的生命财产安全，是桥梁施工中重中之重环节。箱梁安装及跨路施工又是施工中存在安全隐患较多的地方，下面本文将结合工程实践阐述在箱梁安装以及跨路施工中一些安全防范措施。
关键词  安装方案   安全检查   跨路安全
一、 工程概况
工程1：无锡342省道7标跨钱威路工程一共有34孔，总长为1.03km。其中31孔为组合箱梁，预制梁共计270片跨径30米的组合箱梁（自重115吨）；跨钱威路为3孔现浇连续箱梁。342-7标控制节点就是箱梁安装和跨路现浇的施工
工程2：锡宜高速西九河大桥为38跨总长900多米，河宽500多米，主桥为5孔45米预制梁（自重145吨），引桥为20米标准空心先张板792片。 安全防护重点为45米梁的移运和吊装
工程3：无锡惠山大道跨沪宁高速桥为35米组合箱梁（重120吨），引桥为先张25米空心板（重40吨）。 施工重要环节为跨路安全防护。
以上工程的安全防护重点是运梁和吊装
Cross Road Safety pre-installed and Protection Technology
Summary of construction safety related to the construction workers for each life and property, is the most important part of the bridge construction. Box installation and construction is construction across road safety hazards exist in more places, the following article will explain in the box with engineering practice and cross-road construction to install some safety precautions.
Keywords installed across road safety safety inspection program
First, project survey
Project 1: 342 Provincial Highway 7 standard Wuxi Qian Wei Road works across a total of 34 holes, total length of 1.03km. Of which 31 holes for the composite box girder, a total of 270 precast beams span 30 m girder (weight 115 tons); cross-Wei Lu Qian 3 hole cast continuous box. 342-7 standard control node is installed and the cross-road place box girder construction
Project 2: Tin Yi Expressway, 38 West Kowloon Bridge span length over 900 meters, width of river 500 meters, the main bridge is 45 meters 5 holes precast beam (weight 145 tons), approach spans of 20 m standard hollow pre-tensioned plate 792. Security focus on the movement of 45 meters and lifting beams
Project 3: Cross-Nanjing Expressway, Wuxi Huishan Boulevard bridge girder 35 meters (weight 120 tons), 25 m approach spans for the pre-tensioned hollow board (weight 40 tons). Important part of the cross-road construction security.
These projects focus on transportation security and the lifting beam