组合式千斤顶复位技术应用研究

发布时间：2018-05-14 14:03

本文选题：组合式千斤顶 + 桥梁复位　；参考：《长安大学》2014年硕士论文

【摘要】：近年伴随公路发展和城市建设突飞猛进，我国桥梁数量增长速度极快。由于设计原因、施工原因、自然原因等原因，造成梁体位置偏移病害也日益增多。目前对桥梁梁体移位复位方法均采用千斤顶顶推施工的方式，顶推梁体加固方法随着顶推设备和辅助装置的不同有多种工艺。文章以西安市大兴路立交匝道桥修复工程为例，通过桥梁震害检测结果进行现状分析，采用有限单元法对连续弯桥采用复位过程中的应力应变状态及施工安全可靠性进行数值模拟，对复位过程中可能出现的各种最不利的受力情况进行分析，，并根据分析结果指导确定整个复位工程中的临时加固设施方案、组合式千斤顶法工艺流程及控制要点、施工监控方案等方面，保障了复位工程的顺利实施。文章采用组合式千斤顶复位技术对受震害影响移位的连续弯桥进行复位是可行的。与传统的反力架方式相比，具有设备安装简便、复位速度快、适用范围广、不对梁体与墩柱产生内力，保障复位过程安全的特点，具有良好的社会和经济效益。该技术在梁体复位方面具有广泛的推广意义。
[Abstract]:In recent years , with the rapid development of highway and the rapid development of urban construction , the growth rate of bridges in China is very fast . Due to the reasons of design reason , construction reason , natural cause , etc . , the position deviation of the beam body is increased . At present , the method of the displacement reset of bridge beam body adopts jack push - push construction method , and the reinforcement method of the top - pushing beam body has many different processes with the pushing device and auxiliary device .

In this paper , the stress - strain state and the construction safety reliability of the continuous curved bridge are numerically simulated by using finite element method to analyze the stress - strain state and the construction safety reliability of the continuous curved - bridge by using the method of finite element method to analyze the stress - strain state and the construction safety reliability during the reset process .

Compared with the traditional counter - force frame , the method has the characteristics of simple and convenient installation , quick reset speed , wide application range , no internal force on the beam body and pier column , safety of the reset process , and good social and economic benefits .

【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.7

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