Papers by Keyword: Lateral Loading

Abstract: Now a days to ensure sustainability low carbon emission environment friendly products are considered widely around the world. In the construction field, artificial fibres has been researched and used since long time. They are detrimental to the environment due to being non-degradable, non-renewable and high oil consumption. Therefore, there are thoughts to replace them with the natural fibres. In this paper, sisal fibre is considered and are used within 8 mm thick plaster of masonry column. In order to gauge the contribution of sisal fibre within plaster, comparison with unplastered and plain plastered columns are carried out. Two samples of each are considered. The outcome of the experiment revealed that the 8mm thick sisal reinforced plaster column was more ductile and it can be found 1200% and 27% improvement in failure load from unplastered and plain plastered column, respectively, when subjected to out of plane lateral load.

Abstract: Experimental work has been carried out on the crushing behaviour of jute, glass, and hybrid jute-glass/epoxy foam filled bi-tubes under lateral loading. Inner and outer tubes diameters of 50 mm and 100 mm respectively were fabricated by hand lay-up method. Tube length of 150 mm is maintained for all the fabricated specimens. Polyurethane foam filler was used to fill the gap between the inner and outer tubes. Lateral loading was applied on the foam filled bi-tubes as well as the inner and outer tubes individually. Lateral load-displacement relations were drawn and the energy absorption was calculated. Effect of material used and foam filler on the load-displacement relations, maximum and mean loads, and failure mode was investigated. Crush force efficiency and stroke efficiency were determined and discussed. Results show that the glass/ epoxy foam filled bi-tubes supported load higher 22.45%, 28.94% and 36.80% than the glass-jute, jute-glass and jute/ epoxy bi-tubes respectively. It has been found that the glass/epoxy foam filled bi-tubes supported load higher 18.08% than that obtained from the combination of the maximum loads of the inner and outer empty tubes. The performance of the foam filled bi-tubes under lateral loading is improved by using the polyurethane foam filler and influenced by the stacking sequence of the material used. The specific energy absorption of the foam filled glass/ epoxy bi-tubes is found higher 5.47%, 12.86 % and 20.68% than the glass-jute, jute-glass and jute/ epoxy foam filled bi-tubes. Failure mechanism of the fractured specimens was discussed.

Abstract: In this paper, closed-form solutions were used to analyze the response of eight laterally loaded rigid piles obtained from field test, centrifuge test, and 1g laboratory model tests, allowing the modulus of subgrade reaction and the profile of limiting lateral resistance force per unit length (LFP, p_u profile) to be back calculated. The study shows that (1) with a constant modulus of subgrade reaction, a linear increasing LFP and elasto-plastic p ~ y curves, the response of laterally loaded rigid piles can be well predicted in the framework of load transfer approach; (2) the gradient of the LFP is 0.64 ~ 3.0 times that of the Barton LFP; and (3) the gradient of the LFP and modulus of subgrade reaction increases approximately linear with the confining pressure in the model tests.

Abstract: ROPS is an effective way to reduce casualty rate in the rolling accident. This paper introduces the design of a cab to strengthen safety-ROPS large wheel loader method. The finite element model, it's a ROPS rear, absorbers and supporting structure frame of the safety-cabs, was created. Force and displacement boundary conditions obtained in accordance with the international standard ISO3471:2008-The large deformation elastic-plastic finite element analysis, horizontal, vertical and ROPS vertical load cases of performance testing and the corresponding lab for investigation. The test results show that the design can meet the requirements of ISO3471 ROPS: 2008. Test results differences and simulation and welded joint of the fracture analysis on the reason.

Abstract: The crack development of two cast-in-situ RC frame structures subjected to lateral loading was investigated. Then the develop reasons were analyzed. The investigation indicates that the existence of monolithic slab in reinforced concrete frame structure overstrengthened the actual flexural capability of longitudinal beams. Therefore, the participation of monolithic slabs should be made in consideration in structural design to achieve the strong column weak beam philosophy.