摘要
根据有限元理论计算和施工过程中对主梁挠度和线形的测量 ,使用人工神经网络等控制理论进行高程偏差调整和预测 ,综合确定主梁施工预拱度。借助预埋钢弦传感元件 ,测试主梁混凝土应变 ,分析测试应变中温度等诸多影响因素 ,确定实际结构的真实应力 。
According to theoretical calculation of finite element method, deflection and alignment survey of main beam of the bridge in construction, elevation deviation is adjusted and forecasted by control theory of artificial neural network, construction camber for main beam is determined.Steel string strain sensors are located in main beam in advance, concrete strain of main beam of the bridge is tested.By the analysis of some infection factors for tested strain, true stress of actual structure can be determined.The control technique can provide background data for constructing safely and deciding the reasonable finished dead state of the total structure of long span prestressed concrete bridge.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2002年第4期38-42,共5页
China Journal of Highway and Transport
基金
湖北省自然科学基金项目 ( 2 0 0 1A BB0 84 )
关键词
大跨度
预应力混凝土桥梁
施工控制技术
highway bridge
prestressed concrete
control technique for construction
