7-r,A 872228 Analysis, design and construction of a piled raft foundation for a high-rise office building on pinnacled limestone Ng, T H
Proc 8th Southeast Asian Geotechnical Conference, Kuala Lumpur, Malaysia, 11-15 Alarch 1985 V1. P453-60. Publ Kuala Lumpur: Organising Committee, 1986 The foundation problems for the construction of two tower blocks and basement car parks on pinnacled karstic limestone overlain by loose medium sand are described. A raft foundation was specified with piles resting on bedrock, or jet grouted columns where the limestone was shallow. The complex support conditions required the use of three dimensional finite element analysis to validate the design and determine the actual stresses on piles, columns and bedrock.
872229 Driving of H-piles in limestone formation using diesel hammers Sehested, K G; Wah, W W
Proc 8th Southeast Asian Geotechnical Conference, Kuala Lumpur, Malaysia, 11-15 t~,larch 1985 V1. P461-67. Publ Kuala Lump,tr: Organising Committee. 1986 About 2300 steel H-piles were driven using diesel hammers into hard limestone overlain by 4.5-28m of weak alluvial and disturbed soils at the site of a cement works. Initially, piles displaced, tilted and bent as they hit the bedrock and the piling frame was badly shaken. The causes were deduced to be sliding as the pile hit the rock surface, insufficient lateral constraint from the soils and lack of adjustment of drop height and driving speed of the hammers. The use of Oslo points on the piles and careful driving overcame these problems.
872230 Foundations for Srimara Complex, Kuala Lumpur Yong, T G; Ting, W H; Toh, C T
Proc 8th Southeast Asian Geotechnical Conference, Kuala Lumpur, Malaysia, 11-15 ~larch 1985 V1, P4/68-72. Publ Kuala Lumpur: Organising Committee, 1986 This office block with basement car parking was built over limestone which had weathered in slabs. Where adequate limestone was available at shallow depths, cast in place bored piles were socketed into the rock. Where no adequate rock was found at depths to 60m, jet grouting was carried out around the pile shaft to increase side resistance. Results of loading tests with and without jet grouting are presented, along with measured movements of the anchored diaphragm wall.
872231 Design of bored piles in limestone in France Bustamante, M; Gianselli, L; Pilot, G
Proc 8th Southeast Asian Geotechnical Conference, Kuala Lumpur, Malaysia, 11-15 3,1arch 1985 VI, P4~73-81. Publ Kuala Lumpur: Organising Committee, 1986 Design of deep foundations in limestone areas are made difficult because of the heterogeneity, hardness and fissuring of the soils and bedrock. The French solution is to use the Menard pressuremeter to determine mechanical properties of the soils, and to use values of beating capacity and skin friction determined from static loading tests on real piles in these formations in design calculations.
872232 Design of piles in weak carbonate rocks Swarm, L H
Proc 8th Southeast Asian Geotechnical Conference, Kuala Lumpur, Malaysia, 11-15 March 1985 VI, P4/82-86. Publ Kuala Lumpur: Organising Committee, 1986 The design of piling for a jetty in North Western Australia is described. Pressuremeter tests were used during the site investigation, and extensive use was made of the parameters obtained. Design parameters were finalised following a pile load test. 872233 Analysis of the performance of piles in silica sands and carbonate formations Bea, R G; Vahdani, S: Guttman, S I; Meith, R M: Paulson, S F
Proc 18th Offshore Technology Conference, Houston, 5-8 May 1986 1"1. P551-560. Publ Richardson, Texas: OCT, 1986 Mathematical modelling was undertaken to study the pile-soil interaction for pile in silica and calcareous sands. The model used was PSAS (Pile-Soil-Analysis-Systewm), which was calibrated from pile loading tests. Static load response of a drilled and grouted pile in a seafloor calcareous formation was parametrically analysed using the calibrated model. It was concluded that insightful interpretation of soil characteristics can result in good agreement between model and field test results, that pile-soil stiffness plays a major role in determining beating capacity, and that larger than normal factors of safety should be used for drilled and grouted piles in carbonate foundations. 872234 Lateral loading tests on large-diameter steel piles installed in carbonate rocks and soils Hagenaw, J: Chandrasekhar, C S; Waanders, A J
Proc 18th Offshore Technology Conference, Houston, 5-8 May 1986 V1, P561-568. Publ Richardson, Texas: OCT, 1986 Cyclic lateral loading tests were carried out on 4 pairs of piles, diameter 914-3353mm. driven into weak carbonate rock and marine sediments. Measured deflections were greater than those predicted by the load-deflection (p - y) curves constructed using the usual methods. More accurate prediction of pile behaviour is possible using a suitable modification of the method of constructing p - y curves for stiff clays. 872235 CAPWAP analyses increase ability to properly design piles in calcareous sands Dutt, R N; Teferra, W
Proc 18th Offshore Technology Conference, Houston, 5-8 May 1986 V1, P569-578. Publ Richardsop, Texas: OTC, 1986 The present understanding of soil-pile behaviour in calcareous soils is reviewed, and a description is given of a study to evaluate the use of dynamic pile measurements to determine static pile capacity. Soil resistance during driving (SRD) was computed from measured force and acceleration records from the installation of a 75cm diameter drill conductor in the Gulf of Suez, using the CAPWAP program. The computed SRD profile agreed well with static pile capacities predicted using soil properties from a nearby site and assuming total capacity is three times the outside skin friction resistance. The potential use of dynamic measurements to predict static performance is demonstrated, but further confirmation is required.
1986 Pergamon Journals Ltd. Reproduction not permitted