小魏家沟中桥箱梁满堂支架施工方案省道S303线巴朗山隧道工程TJ1合同段小魏家沟中桥现浇箱梁满堂支架施工方案华通路桥集团有限公司巴朗山项目部二○一三年三月小魏家沟中桥箱梁满堂支架施工方案目录1编制依据............................................................................................................................................-2-2工程概况............................................................................................................................................-2-3现浇箱梁满堂支架布置及搭设要求................................................................................................-2-4现浇箱梁支架验算............................................................................................................................-2-4.1荷载计算.................................................................................................................................-2-4.1.1荷载分析......................................................................................................................-2-4.1.2荷载组合......................................................................................................................-3-4.1.3荷载计算......................................................................................................................-3-4.2结构检算.................................................................................................................................-4-4.2.1扣件式钢管支架立杆强度及稳定性验算...................................................................-4-4.2.2满堂支架整体抗倾覆验算..........................................................................................-7-4.2.3箱梁底模下横桥向方木验算......................................................................................-7-4.2.4扣件式钢管支架立杆顶托上顺桥向方木验算...........................................................-8-4.2.5底模板计算................................................................................................................-10-4.2.6侧模验算....................................................................................................................-11-4.2.8立杆底座和地基承载力计算....................................................................................-12-4.2.9支架变形....................................................................................................................-14-5支架搭设施工要求及技术措施......................................................................................................-16-5.1模板支架立杆、水平杆的构造应符合下列要求........................................................-16-5.2满堂模板支架的支撑设置应符合下列规定................................................................-17-5.3支架拆除要求...............................................................................................................-17-5.4支架预压及沉降观测...................................................................................................-18-6安全防护措施及安全交底..............................................................................................................-19-6.1安全防护措施...............................................................................................................-19-6.2安全交底...........................................
