IMPACT OF VARIATION IN SEISMIC PARAMETERS ON THE BASE WIDTH OF DAM BODY

Authors

  • Ali Murtaza Rasool
  • Shinya Tachibana
  • Hafiz Muhammad Ahmad
  • Muhammad Farhan Tahir

Keywords:

Concrete gravity dams, Horizontal & vertical earthquake component, Stability, CADAM

Abstract

Large concrete gravity dams are normally designed for seismic combination of 100% horizontal
component (H) with 0% vertical component (V). This research provides the guidelines for use of realistic
seismic load combinations in the design of large concrete dams. The current study involves the impact of
variation of seismic parameters on the base width of the dam. In addition to 100% H with 0% V, 100% H with
30% V and 100% H with 67% V and vice versa of all three (03) combinations are also considered. Total six
(06) seismic load combinations have been considered to analyse the dam body using rigid body analysis
approach using CADAM software. Three (03) dam base widths are studied for six (06) horizontal and vertical
seismic combinations. The analysis results showed that increase in dam base width of 20m (Study-I) was okay
for seismic combination EQ-(1,2 & 3,4) by taking some extra measures. Increase in dam base width of 30m
(Study-II) was okay for seismic combination EQ-(1,2 & 3,4) without taking any extra measures. Whereas,
increase in dam base width of 40m (Study-III) was okay for all seismic combinations EQ-(1,2, 3,4, 5,6).

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Published

2020-05-30

How to Cite

Ali Murtaza Rasool, Shinya Tachibana, Hafiz Muhammad Ahmad, & Muhammad Farhan Tahir. (2020). IMPACT OF VARIATION IN SEISMIC PARAMETERS ON THE BASE WIDTH OF DAM BODY. GEOMATE Journal, 18(69), 44–51. Retrieved from https://geomatejournal.com/geomate/article/view/1482

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