TY  - BOOK
AU  - MANGI, NAEEM 
AU  - DEPARTMENT OF CIVIL ENGINEERING
TI  - DETRIMENTAL EFFECTS OF EXCAVATION-INDUCED GROUND MOVEMENTS ON ADJACENT FRAMED BUILDING  
U1  - R/IMS-1917-MCE-08 
PY  - 2019///
CY  - NAWAB SHAH
PB  - QUEST
N1  - ABSTRACT

With the increase in population growth, urbanization is increasing too. that leads to the traffic as well as parking issues especially in metropolitan cities like Karachi. London and Shanghai etc.To accommodate parking issue for the vehicles mainly in urban areas, basements (i.e. excavation) under or nearby high rise buildings are preferred. In  the result  of excavation, ground  movements  occur  that  have  major
impact on structures. buildings and utilities etc.Past research usually oversimplified surface structure as an equivalent elastic beam which is unable to represent behaviour of a  framed building  realistically.  in this study, the detrimental  effects on n  two
storey  RCC framed  building  (ground  & first floor)  founded  on  piles due  to an adjacent excavation-induced ground movement were determined. Elasto-plastic
coupled-consolidation analysis was adopted. An advanced constitutive model was med to capture soil behaviour. This model has ability to capture the unique features of soil which are non-linear, degradation of stiffness (with stress, strain & path
) and stress-strain dependent dilatancy of soil. The concrete damaged plasticity (CDP) model was used to capture cracking behaviour in the concrete beams, columns and piles. It was revealed that significant differential settlement was observed in the building on completion of  the  excavation. As  a result  of  the
settlement, the slope  (maximum  of  0.2%)  and  tilting  (maximum of 16%) were induced in the two storeys framed building. The induced  slope and tilting are not equa and resulting in the distortion of the frame of the building. As a
the tension cracks are indeed at the Inner side of the column. The detrimental effect of excavation on the frame can be  minmized by increasing thickness of the wall
UR  - http://tinyurl.com/5425u669
ER  -