3.
Construction Methodology
The construction methodology of the typical block of main bridge is the precast segmental balanced cantilever method using derrick crane. The pier table is considered cast-in situ method. The precast
segment of the deck will be fabricated at facility yard first, transported to the site and erected by the derrick crane in balanced cantilever method. The construction scheme of the main bridge is as per the following.
1. Construction of well foundation (Sinking and Concreting for steining is staggered process. 2. Closure with Bottom Plug, 3. Filling material inside, 4. Well Cap concreting.
1. Fabrication of reinforcing bar and casting concrete for lower pylon. 2. Install the temporary support system for pier table. 3. Construction of pier table and pylon
1. Transport segments by trailer. 2. Install segment in due sequence by derrick crane. 3. Tensioning the cable and tendon in due sequence.
Lift key segment formwork by derrick crane. 2. Lift internal movement joint. 3. Construct key segment. 4. Install internal movement joint (Needle Beam)
1. Install the expansion joint. 2. Install wearing surface and road facilities
The Bridge and Structural Engineer
Volume 48 │ Number 1 │ March, 2018
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