简支T梁桥横向连接状态评价理论与试验研究  

Appraisal Theory and Experimental Study on Transversal Connection of Simply-Supported T-Beam

作　　者：鞠凤森[1] 

机构地区：[1]吉林省高速公路管理局,吉林长春130022

出　　处：《工程与试验》2012年第2期37-39,73,共4页Engineering and Test

摘　　要：横向连接损伤是简支T梁桥常见的病害形式之一,准确地把握横向连接的使用状态是确保该类桥梁安全应用的关键措施。采用跨中截面的挠度分布系数来代替各梁的荷载横向分布系数,建立了基于BP神经网络的横向连接损伤识别方法,以挠度分布系数为输入,以跨中截面各横隔板的损伤为输出。采用数值模拟算例和实际工程应用的方法,验证了所形成方法的有效性和可行性。The transversal connection damage is one common kind of simply-supported T-beam damage.Exact grasp of transversal connection is the key measurement to ensure the bridge safety.The deflection distribution factors of the mid-span section are used to take the place of the load transversal distribution factors of each beam.The transversal connection damage detection method based on BP neural network is established,which takes in the deflection distribution factors and puts out the damage of diaphragms of the mid-span section.The numerical simulation example and the practical project application can verify the effectiveness and feasibility of the above method.

关 键 词：简支T梁桥 横向连接 评价方法 挠度分布系数 

分 类 号：U441.4[建筑科学—桥梁与隧道工程]