摘要
成桥线形是桥梁施工监控的重要内容之一，矮塔斜拉桥在现阶段常用的施工方法为挂篮现浇，结构体系随着施工的进行将发生变化，影响桥梁线形的因素很多，根据不同的参数对成桥线形的影响程度不同将参数分为主要参数和次要参数。应用有限元的方法对影响矮塔斜拉桥线形的参数做敏感性分析，分析的参数有主梁容重值、主梁弹性模量、预应力钢绞线弹性模量、温度变化、张拉索力，结论为主梁容重值、主梁弹性模量、预应力钢绞线弹性模量、温度变化为影响线形的主要参数。
Abstract
The bridge alignment is one of the important contents during monitoring of bridge construction , low tower cable -stayed bridge construction methods commonly uses hanging basket cast at the present stage , the structure system will be changed a-long with the construction , many factors can influence the bridge alignment , the parameters are divided into major parameters and minor parameters according to the degree of influence .It used finite element to do sensitivity analysis of the parameters for the low tower cable-stayed bridge alignment .The bulk density value of main girder, elastic modulus of main girder , the elastic modulus of pretested steel strand , the temperature change and cable force are analysed , turn out,the bulk density value of main girder , elastic modulus of main girder , the elastic modulus of pretested steel strand and the temperature change are major parameters , the cable force is minor parameter.
NETL
NSTL
维普
万方数据