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总览 评价 徐文涛 * ， 张建波 ， 王方甫 （ 郑州大学力学与工程科学学院，郑州 450001； ） 摘要： 公路交通荷载运行因路面高低不平顺的影响而与支撑结构产生强烈的垂向耦合随机振动，从而诱发毗邻建筑产生相应的振动响应。文中以纵向无限长的Kelvin地基上
徐文涛*， 张建波， 王方甫
（
郑州大学力学与工程科学学院，郑州 450001； ）
摘要：
公路交通荷载运行因路面高低不平顺的影响而与支撑结构产生强烈的垂向耦合随机振动，从而诱发毗邻建筑产生相应的振动响应。文中以纵向无限长的Kelvin地基上的Kirchhoff板模拟路面支撑体系，将1/2车辆模型与受振建筑耦合进统一的有限元数值模型。视无限长路面为周期性链式子结构，通过证明有阻尼链式子结构的辛正交特性，建立一个典型路面子结构模型，构造垂向耦合随机振动的二维移动单元格式。在频域内基于虚拟激励方法进行数值求解，分析了振源-支撑体系-受振结构统一模型下的垂向动力学响应。
关键词：
环境振动；随机振动；虚拟激励法；毗邻建筑
XU Wentao*， ZHANG Jianbo， WANG Fwangfu
（
School of Mechanics＆Engineering Science, Zhengzhou University, Zhengzhou, 450001； ）
Abstract：
Vertical coupling random vibration is generated between highway traffic load and supporting structure due to road surface height roughness, then induced the corresponding vibration response of adjacent building. Road supporting structure was simulated using Kirchhoff plate on the longitudinal infinite Kelvin foundation, and the 1/2 vehicle model and vibrated building were coupled into a unified finite element numerical model. The infinite long road surface was regarded as periodic chain-type substructure. A typical model of road surface substructure was built and two-dimensional moving element of vertical coupling random vibration was formulated by proving the symplectic orthogonal characteristic of damping chain-type substructure. Based on pseudo excitation method, vertical dynamic response of the unified model of vibration source-supporting structure-vibrated structure was analysed.
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