Dongpu bridge is a two continuous multi - span prestressed concrete continuous rigid frame bridge with the total length of 1093 . 5m , which is consists of two kinds of spans 80m and 160m , ring expressway of guangzhou city 广州市环城高速公路东圃特大桥是一座由80m和160m跨度组成的两联多跨预应力混凝土连续刚构桥,大桥全长1093 . 5m 。
Although cantilever concreting methods of continuous rigid frame bridge are comparatively mature , considering this bridge ' s characteristics , this paper mainly gives the design of constitution scheme and technologies , and so on 连续刚构桥的悬灌施工虽然是比较成熟的方法,但本文结合该桥的特点,着重介绍了该桥的施工方案与施工工艺的设计。
Level of construction completion based on the construction control program are used to guide construction , this will be optimum construction state and optimum completion state of long span continuous rigid frame bridges 结论利用提出的基于最优施工完成度的施工控制方案来指导施工,会使连续刚构桥的施工由最优节段施工状态最终达到最优成桥状态。
Under the circumstances multi - span continuous rigid frame bridge is used continually , but the ratio of spans of multi - span is relatively various . the choosing of a suitable ratio with thinking of static behavior of the structure is worthy of study 在这种情况下,多跨连续刚构桥不断出现,其跨径比值有较多变化,从结构受力上考虑合理跨径比值具有实用价值。
The basic conclusions are as follows : ( 1 ) under the common effects of dead load and temperature , the internal forces of two intermediate piers are obviously larger than those of two side piers of five - span continuous rigid frame bridge 通过本文的研究,得出如下主要结论: ( 1 )对于五跨连续刚构桥,在自重荷载和温度变化作用下,两中墩内力显著小于两边墩内力。