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doi:10.3850/978-981-08-6396-8_P039
Methodologies to Mitigate Building Damage due
to Excavation Works
H. L. Phua1,a, T. S. Chua2,c, Michelle Lew2,d and V. Rama1,b
1Land Transport Authority, Singapore.
ahooi_leng_phua@lta.gov.sg
brama_venkta@lta.gov.sg
2Kiso Jiban Singapore Pte. Ltd., Singapore.
cchua_ts@kiso.com.sg
dmichelle@kiso.com.sg
ABSTRACT
Deep excavation project, especially if it is taken in soft and sensitive ground conditions, would inevitable induce an element of movement of the ground on the peripheral of the excavation. The consequence of this ground response due to the effects of unloading could have a detrimental effect on the structural integrity of any structures that is founded on it. This risk cannot be avoided if the excavation work is sited in a built-up environment with sensitive structures within the influence zone of the excavation.
The objective of this paper is to describe the predicted and actual performance of two structures related to, and the different methodologies adopted in mitigating their influence on the excavation for the Circle Line Stage 5 Pasir Panjang Station. The first structure is a pre-war 2 storey masonry building which has undergone prior excessive settlement and damage and the second is a single storey steel frame food centre.
Keywords: Building, Excavation, Kallang.
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