摘要
双层贝雷梁支架是一种采用螺旋钢管支撑于附近墩身的承台或其他刚性基础上的系统,因其承载力强,刚度大且具有良好的经济性能而被广泛采用。对某市域快铁简支箱梁现浇施工支架进行加载预压,检查双层贝雷梁现浇施工支架的稳定性和承载能力。通过预压试验得出荷载作用下支架弹性、非弹性变形及应力参数,为后期箱梁现浇施工计算预拱度和设置加强杆件提供依据,保证箱梁结构线形,保障施工安全。通过施工现场的支架应力和变形测试,并结合有限元计算分析得出合理的反馈,为预压过程加载决策提供技术依据,也为结构行为和施工安全控制提供理论支持。
The double-layer berea beam support is a kind of system which is supported by spiral steel pipe on the platform or other rigid foundation of nearby piers, and is widely used because of its strong bearing capacity, high rigidity and good economic performance. Precasting the cast-in-situ construction support of a fast-track simple-supported box girder in a certain city and inspecting the stability and carrying capacity of the cast-in-situ construction support of the double bailay beam. Through the preloading test, the elastic, inelastic deformation and stress parameters of the Support under load are obtained, which can provide the basis for the calculation of the precast crown and the setting of the reinforced bars in the cast-in-situ construction of the late box girder, ensuring the structural line of the box girder and ensuring the construction safety. Through the construction site of the stent stress and deformation tests, combined with the finite element analysis of the feedback obtained reasonable feedback for the preloading process to provide a technical basis for decision-making, but also for structural behavior and construction safety control to provide theoretical support.
出处
《建筑技术开发》
2018年第7期1-3,共3页
Building Technology Development
作者简介
孟路（1985-），男，安徽蚌埠人，工程师，主要研究方向为桥梁检测、监测及承载能力评估。
