大跨连续梁0号块支架方案比选及施工要点研究  

Study on Scheme Comparison and Construction Key Points of No.0 Block Bracket of Large-span Continuous Beam

作　　者：曾伟峰 ZENG Weifeng(China Railway 22nd Bureau Group 4th Engineering Co.,Ltd.,Tianjin 301700,China)

机构地区：[1]中铁二十二局集团第四工程有限公司,天津301700

出　　处：《工程技术研究》2024年第7期30-34,共5页Engineering and Technological Research

摘　　要：大跨度连续梁0号块通常依墩高和结构尺寸选择落地式支架和墩旁托架等支撑方式,既要保证0号块支架有足够的承载力和稳定性,又要使支架具有经济性和施工简便性。文章以某高速公路(75+130+75)m连续梁0号块支架施工为背景,通过现场环境调查分析、三种落地式支架方案比选及最优方案建模分析,保证了方案支架方案设计的强度、刚度和稳定性均满足规范要求,同时确保了方案的有效实施和工程质量合格,可为类似工程提供参考和借鉴。The No.0 block of large-span continuous beam usually chooses the support methods such as landing support and pier-side bracket according to the pier height and structural size.It is necessary to ensure that the support of No.0 block has suficient bearing capacity and stability,and to make the support economical and easy to construct.Based on the construction of No.0 block support of(75+130+75)m continuous beam of a highway,through on-site environmental investigation and analysis,comparison and selection of three landing support schemes and modeling analysis of the optimal scheme,the strength,stiffness and stability of the scheme support scheme design are ensured to meet the requirements of the specification,and the effective implementation of the scheme and the quality of the project are ensured.It can provide reference for similar projects.

关 键 词：连续梁0号块 支架方案 受力分析 结构安全 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]