Arch bridges - Computational Analysis and Design of Bridge Structures - page 272

Figure 9.6 Vertical casting and rotating of arch bridge. (Zhenzhu Bridge, China, 2008,
Courtesy of Guizhou Bridge Construction Group Ltd.)
vertically and then vertically rotated to closure position. The construction
of the Yajisha Bridge, which will be introduced in detail in Section 9.2.2,
combines rotations in both vertical and horizontal methods.
In addition to these two predominant construction methods, a concrete
arch can be designed to use CLCA method (Kawamura 1990) to cast con-
crete on-site. CLCA stands for concrete lapping with pre-erected composite
arch. When using CLCA method to erect an arch, the concrete arch con-
tains steel tubes as the core of the composite section, which will be acting
as the falsework to form the whole composite arch. The steel tubular arch
will be erected first by using either segmental erecting or rotation method
and then concrete will be filled into the tube. After the core of the compos-
ite section is formed, the concrete-filled steel tube arch will be used as the
falsework to support the form works to cast the outer concrete on-site.
In Sections 9.2.1 and 9.2.2, Lupu Bridge and Yajisha Bridge will be used
as two examples to introduce the common construction methods of an arch
bridge.
9.2.1 Lupu bridge, People's republic of china
The Lupu Bridge (Figures 9.7 and 9.8) is crossing over Huangpu River,
Shanghai, China. Once the world record keeper, this bridge is a steel