Introduction * Ultimate Bearing Capacity Theories - Centric Vertical Loading * Ultimate Bearing Capacity Under Inclined and Eccentric Loads * Special Cases of Shallow Foundations * Settlement and Allowable Bearing Capacity * Dynamic Bearing Capacity and Settlement * Shallow Foundations on Reinforced Soil * Uplift Capacity of Shallow Foundations * Appendix: Conversion Factors * Index.

Shallow foundations : bearing capacity and settlement

Behaviour of footings on reinforced sand subjected to repeated loading – Comparing use of 3D and planar geotextile

http://wp.kntu.ac.ir/nas_moghaddas/A%20comparison.%20A.pdf

A comparison of static and cyclic loading responses of foundations on geocell-reinforced sand

Results of large-scale laboratory model tests conducted to determine the permanent settlement due to cyclic load of the railroad bed for a proposed high-speed train route extending from Seoul to Pusan in South Korea are reported. The possibility of using geogrid layers as reinforcement to reduce settlement of the subbase layer was investigated. Based on the present model test results, it appears that practically all permanent settlement due to cyclic load is completed after application of 105 cycles of load. The most beneficial effect of reinforcement is derived when one layer of geotextile and one layer of geogrid are placed at the interface of the subgrade soil and subbase course.

Geogrid-reinforced railroad bed settlement due to cyclic load

Closely–spaced footings may be encountered on cohesionless soils in the form of grillage foundations and railway ties. Close spacing is known to permit higher loads than can be carried by similar isolated footings. This effect is due to interference between failure zones in the sand, and may increase the capacity by 150% when o = 35° and the centreline separation of the footings is approximately twice the footing width B. The method of stress characteristics has been used to calculate the theoretical bearing capacity of a series of parallel footings, and these have been compared with laboratory tests on three parallel surface footings at various spacings on two different sands. The testing programme also investigated the effects of footing roughness and load distribution. When interference occurs, pre-failure settlements become larger, and post-failure behaviour more ductile. The theoretical solutions show similar trends to the model tests, but suggest that interference stops at rather smaller spacings. D...

Bearing capacity of three closely-spaced footings on sand

A study is reported of experiments on model plane strain footings subject to repeated loading. The load was returned to zero at the end of each cycle. This is characteristic of a train wheel load p...

Fadel El Komos

Papers

Repeated load testing of a model plane strain footing