PSI - Issue 52

Sairam Neridu et al. / Procedia Structural Integrity 52 (2024) 267–279 Sairam Neridu/ Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 2. (a) Eagle view of the bridge from the downstream side; (b) Geometrical details; (c) Bridge Top view.

Table 1. Observed Crack width and depth. Sl. No Member

Width (mm)

Depth (m)

Location

Remarks

1

Pier wall

5.7m from the RHS end and 1.2m from Raft

1.25

-

Throughout Crack

2

Pier wall

5.7m from the RHS end and 0.8m from Raft

1.0

0.012

3

Pier wall

5.7m from the RHS end and 3.1m from Raft

1.0

-

Throughout Crack

4

Pier wall

6m from the LHS end and 0.9m from Raft

0.80

-

Throughout Crack

5 Throughout Crack A preliminary analysis of the observed damages revealed significant concerns for the structural integrity and safety of the bridge. The presence of major cracks on both sides of the pier wall, extending from the deck slab to the bottom raft, suggests that the wall pier is experiencing significant compression stress towards gravity. The width of the cracks exceeding 0.3mm indicates that the cracks are severe and require prompt attention. Furthermore, the presence of patchwork and honeycombs on the piers and abutments indicates that the concrete quality used in construction might not have met the required standards, potentially contributing to the observed cracks. Pier wall 6m from the LHS end and 2m from Raft 1.0 -