Scribd
Upload
130 views1 page

Deflection of Retaining Wall (Conventional Type) Stadd Model Assumption

This document summarizes the deflection of a conventional retaining wall as modeled in STAAD based on different retained heights, surcharge slopes, and earth pressure coefficients. The modeling assumes pinned supports to calculate deflection only. Deflections from the STAAD model are presented and compared to code-specified limits. Additional calculations are shown for shallower slopes of 1V-1.5H and 1V-1H using modified earth pressure coefficients.

Uploaded by

Varun Verma
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
130 views1 page

Deflection of Retaining Wall (Conventional Type) Stadd Model Assumption

This document summarizes the deflection of a conventional retaining wall as modeled in STAAD based on different retained heights, surcharge slopes, and earth pressure coefficients. The modeling assumes pinned supports to calculate deflection only. Deflections from the STAAD model are presented and compared to code-specified limits. Additional calculations are shown for shallower slopes of 1V-1.5H and 1V-1H using modified earth pressure coefficients.

Uploaded by

Varun Verma
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 1

DEFLECTION OF RETAINING WALL (CONVENTIONAL TYPE)

STADD MODEL ASSUMPTION-


Staad model (beam or plate) has been used with varrying section thickness .
Support has been pinned so model only provides deflcetion not deflection + rotation
which is total wall movement. Earth pressure rest cofficient has been considered.
for deflection limit for rest cosfficient of EP height upto stem junction has been considered.
for 1V-2H Ko modifid as per slope

DEFLECTION AS PER STAAD


DEFLECTION AS DEFLECTION AS DEFLECTION LIMIT
SURCHARGE RETAINED
PER STAAD (LONG PER STAAD (SHORT AS PER EN CODE comments
SLOPE HEIGHT
TERM) (MM) (E/2) TERM) (MM) ( E ) (MM) for K0
FLAT 4 6.334 - 2.15
FLAT 3 3.558 - 1.7
FLAT 2 0.885 0.885 1.25
1V-2H 4 4.825 - 2.15
1V-2H 3 1.21 1.093 1.55
1V-2H 2 0.403 0.413 1.1 Design to be revise below 3 m RH

For slope 1:1 and 1:1.5


As per codal formula for K0 with slope restricted to soil internal frictionla angle.

KO = 0.75

for slope 1:1.5

SURCHARGE RETAINED
Ka
SLOPE HEIGHT
1V-1.5H 4 0.9
1V-1.5H 3 0.88
1V-1.5H 2 0.92

for slope 1:1

SURCHARGE RETAINED
Ka
SLOPE HEIGHT
1V-1H 4 0.9
1V-1H 3 0.88
1V-1H 2 0.85

Note- As value of Ka is greater than Ko and Rw is designed as per Ka so no need to check


design for slope 1V-1.5H and 1V-1H

You might also like