Auto Index Excel
Auto Index Excel
Auto Index Excel
PROJECT:
CLIENT:
Prepared By Checked By
Date of Revision to incorporate observations of client
Revision vide their letter reference/minutes of meeting
Issue as the case may be, and as refered below: Name Sign Name Sign
APPROVED BY:
This design is the property of STRUCTCON DESIGNS PVT. LTD. It should not be used, copied or reproduced
without their written permission.
Table of Contents
SR. NO. SECTION PAGE NO.
1 FACE SHEET 1
2 TOC 2
3 PREAMBLE 3
4 DESIGN DATA 4-7
5 FORCES FROM SUPERSTRUCTURE 8-9
6 PILE SYSTEMS 10
7 Sheet1 11 - 14
8 Sheet12 15
i. Preamble
The following pages contain the design calculations for the Pile Foundation, Pile Cap for Piers in straight
portion for height 9.04 to 10m m from top of piercap to top of pilecap (LHS & RHS) of the Gangapath
Elevated corridor.
The Structure is 25.0m 2 span continious (deck continuity) with precast pretensioned I Girder sections
resting on POT/PTFE bearing. The bridge is divided into two separate structures Left & Roght
carriageway seperated by 3.50m. Each structure carries the traffic in one direction, has two lanes for
traffic and a 1.55m width footpath. Each structure is supported by a pier and pile foundation. The Pier is
solid rectangular in nature with a cantilever pier cap to support the superstructure. The Pier is in turn
supported on pile foundation and a rigid pile cap. The piles are founded on Firm strata to transfer the
vertical and horizontal loads from the structure.
The Load cases under consideration are Dead Load, Superimposed Dead Load, Live Load, Footpath Live
Load, breaking force, Wind Load, & Seismic Loads. The certain conditions which occur simultaneously
are taken together like, Braking and Live load. Bearing friction is considered along with each individual
permanent load case and not as an seperate load case. These loads are combined as per the
recommendations of IRC 6 with appropriate load factors. While preparing the load combinations the
worst effects of individual loads are taken to create the design loads.
Bending moment in the pile is calculated by spring constant anology calculated from horizontal &
vertical subgrade reactions. The geotechnical capacity of the pile is as per the pile capacity calculation
report. To calculate the forces in the piles which depend on the stiffness of the substructure, the fixity is
considered at the top of pile cap. For the purpose of design the pile foundation is modeled in STAAD
with spring constant & horizontal forces applied at the pile cap bottom. For the distribution of forces in
the piles, the pile cap is considered as rigid. The pile cap is designed as a flexural member for the critical
load case.
STRUCTCON DESIGNS PVT. LTD. 02/06/2019
3 SC/866-S/B/RC-2301Layout of Pile,Pilecap,Pier
RC Details of Pilecap & Pier
- Reference Codes-
1 IRC 6:2014 Loads and stress
2 IRC 112:2011 Code of Practice for Concrete Road Bridges:
Limit State Design
3 IRC SP:105-2015 Explantory handbook to IRC:112
Dwarka Package- II
STRUCTCON DESIGNS PVT. LTD. 02/06/2019
FRL 61.144 M
12.40
58.679
0.5
58.179
1.25
56.929 Pier Cap
0.1 5.2
1.80
Pier
2.00
58.679 2.80
0.4
0.5
58.179
1.25
56.929
0 0.00
Dwarka Package- II
STRUCTCON DESIGNS PVT. LTD. 02/06/2019
1.80
1.039 4.79
1.5
Pile
Pile Cap
0 0
#VALUE!
Plan of Pile Cap
Pier
Pile Cap
#VALUE! Ground level
Top of Pile Cap
#VALUE!
45.750
Dwarka Package- II
STRUCTCON DESIGNS PVT. LTD. 02/06/2019
45.75 Pile
MSL
25
#REF!
Fixity Level
20.75
Founding Level
Section of Pile Foundation
= 1.30 m
X
c-c dist between piles in y direction = 4.80 m
Edge distance from pile center in y direct = 0.85 m
= 2.40 m
Depth of pile cap = 2.50 m
3
Dwarka Package- II
6
STRUCTCON DESIGNS PVT. LTD. 02/06/2019
5
SUBSTRUCTURE DESIGN OF P125 9
4
0
0 2 4 6 8 10 12 14
Dwarka Package- II
2. Forces on Structure from Superstructure
A B C
0
0 1 2 3 4 5 6
6 Pile system
c-c dist between piles in x direction 3.6 7 Pile no. x y pile cap Piles Pier
Edge distance from pile center in x directio 0.85 1 -3.6 -2.4 0 0 0.85 0.85 3.55 2.15
6
c-c dist between piles in y direction 4.8 2 0 -2.4 8.9 0 4.45 0.85 5.35 2.15
Edge distance from pile center in y directio 0.85 5 3 3.6 -2.4 8.9 6.5 8.05 0.85 5.35 4.35
4 3.6 2.4 0 6.5 8.05 5.65 3.55 4.35
Total pile cap dimension in x direction 8.9 4 5 0 2.4 0 0 4.45 5.65 3.55 2.15
Total pile cap dimension in y direction 6.5 6 -3.6 2.4 0.85 5.65
3 Summatio 51.84 34.56
Column Size in x direction 1.8
2
Column Size in y direction 2.2
1
0
0 1 2 3 4 5 6 7 8 9 10
0
0 2 4 6 8 10 12 14
-868
0
478 2367
1059.16
178.37
142.47
0.00
225.18
27.21
183.51
72.26
3530.54
594.57
474.91
0.00
750.59
90.70
611.70
240.86
2