With the rapid transit development of china ' s highway and railway , more long span bridges were needed to span great rivers and bays , pc continuous rigid frame bridge emerged as the times require and was developed fleetly in recent years 随着我国公路和铁路高速交通事业的发展,急需修建更多的大跨度桥梁以跨越大江、大河和海湾,预应力混凝土连续刚构桥应运而生,近年来得到较快的发展。
Based on a practical engineering , the basic fem model of a five - span continuous rigid frame bridge is built , and with which the static behavior of the basic bridge under dead load and annual temperature change and sunshine temperature differential is analyzed 本文以某一实际工程为背景,建立了五跨连续刚构桥的基准有限元模型,分析了基准桥在自重荷载、年温度变化、日照温差三种荷载工况下的受力情况。
With the development of science technology and traffic enterprise , the continuous rigid frame bridge has been growing up rapidly in the recent years with it ' s unique predominance of handy construction , economical cost , reasonable internal force and comfortable travelling 随着科学技术和交通事业的发展,预应力砼连续刚构桥以其施工简便、造价经济、受力合理、行车舒适等独特优势在近年来得到了迅速崛起。
This bridge structure analysis system have applied to the design of chaoyangshi bridge in express way around chongqing city ( continuous rigid frame bridge , 1523m long , maximum span up to 130m ) , which produced a remarkable benefit in social and economy fields 桥梁结构分析系统bsa已结合生产实际,应用到重庆绕城高速公路朝阳寺大桥(连续刚构,全长1523米,最大跨径130米)等桥梁的设计中,取得了良好的经济和社会效益。
With the development of high - speed transportation project and the enhancement of the traffic speed , it is important to improve the comfort in vehicle - driving . it is an effective way to increase the total length of superstructure of continuous rigid frame bridge 由于高速交通事业的发展和行车速度的提高,已将行车的舒适性提到了很重要的位置,尽量增大连续刚构桥上部结构的连续长度,有利于高速行车和提高行车舒适性。