Full text
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| Author(s): |
Sidnei Helder Cardoso Teixeira
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Carlos. , gráficos, ilustrações, tabelas. |
| Institution: | Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) |
| Defense date: | 2003-06-02 |
| Examining board members: |
Benedito de Souza Bueno;
Joao Baptista Nogueira;
Ennio Marques Palmeira;
Delma de Mattos Vidal;
Orencio Monje Vilar
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| Advisor: | Benedito de Souza Bueno |
| Field of knowledge: | Engineering - Civil Engineering |
| Indexed in: | Banco de Dados Bibliográficos da USP-DEDALUS; Biblioteca Digital de Teses e Dissertações - USP |
| Location: | Universidade de São Paulo. Biblioteca da Escola de Engenharia de São Carlos; EESC/TESE-EESC; T266ei |
| Abstract | |
The knowledge of interaction mechanisms between soil and geosynthetics is fundamental for designing reinforced-soil structures. However, due the variety of surface geometry found in commercially available geosynthetics, the interaction between soil and inclusions can occur on different ways. For the geodrids, the pullout interaction mechanisms is the one that, in some cases, best represents the field situations. This thesis presents an analysis of the main factors influencing the soil-geogrid interaction during pullout phenomena, using large and small-scale test boxes, as well as an device that tests longitudinal and transversal geodrid elements isolated. Two numerical models for evaluating the pullout behavior of large geogrid samples using small-scale and on element tests are also presented. The results of different tests are compared, showing the viability of using small-scale tests for testing geogrids embedded in fine soils instead of large-scale tests, that demand large quantities of soil and labor to be done. On the penultimate chapter, a method for evaluating the maximum tensile effort of reinforced slopes and walls is presented. This method uses the results obtained from small-scale pullout tests and considers some important aspects as soil-geogrid interaction and reinforcement rigidity (AU) | |