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describe load tests performed to investigate the lateral resistance of pile caps. The results from these four studies, summarized in Table 2.1 and Figure 2.1, show that the lateral load resistance provided by pile caps can be very significant, and that in some cases the cap resistance is as large as the resistance provided by the piles themselves.
Continue Reading...less of the lateral demand is resisted by frame action of the pile-pile cap-pile structure. The lateral and axial resistance offered to the piles by the soil will, of course, also affect the response. In studies of soil-deformational group interaction, the distinction between perpendicular (i.e. side-by-side) and parallel (i.e. front-to-back or ‘shadowing’) interaction effects is usually ...
Continue Reading...3.5—Group action in compression 3.6—Pile spacing 3.7—Lateral support 3.8—Batter piles 3.9—Axial load distribution 3.10—Long-term performance 3.11—Lateral capacity 3.12—Uplift capacity Chapter 4—Structural design considerations, p. 16 4.1—General 4.2—Loads and stresses to be resisted ACI 543R-12 Guide to Design, Manufacture, and Installation of Concrete Piles Reported by ...
Continue Reading...raft, number of piles and pile length in a group of piled- raft on the load shared by piles and the raft and bending moment in raft. Small and Zhang (2002) analysed the behaviour of piled- raft foundations (PRFs) under vertical and lateral loads respectively through the program APRAF (Analysis of Piled Raft Foundations). Horikoshi et al. (2003a) analysed the effect of static horizontal and ...
Continue Reading...Efficiency factor vs. number of piles based on Plaxis analysis. Figure 7. Influence of soil stiffness modulus for symmetrical pile configuration; E = Soil Stiffness Modulus in kN/m2 CONCLUSION Based on the analysis using Plaxis 3D Foundation program, it is found out that the spacing and the number of piles, as well as the soil stiffness do have significant effects to the lateral capacity of ...
Continue Reading...OF PILE GROUPS SUMMARY Groups of piles, commonly used to support bridge structures, are frequently subjected to lateral loadings during extreme events, such as vessel impacts and earthquakes. There is evidence that during past extreme-event loadings pile-group foundations have undergone lateral translations severe enough to cause loss of bearing support for superstructure elements and, on rare ...
Continue Reading...LPILE analyses versus deflection for each row of piles as illustrated in Figure 9.69(b). b. Check the pile structural adequacy for each row of piles. Use the estimated group deflection under the lateral load per pile to determine the maximum bending moment for an individual pile in each row. c. Determine maximum pile stress from LPILE output associated with the maximum bending moment. d ...
Continue Reading...On the spacing of 2d to 4d, the piles worked in group but they work also differently. It shows that the increase of piles diameter allows both an increase the stiffening and a decrease the horizontal displacements but not systematically induces a decrease of the internal forces. Keywords: Interaction, Soil, Structure, Group of piles, Lateral load, FEM, Plaxis 3D Comportement d’un groupe de ...
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Continue Reading...Bar Stand-Offs Cross-Pin Dowel Saddle Joint Fixtures for Small Drawer Pull Assembly Shop Notes As part of a cabinet project I needed to make a number of identical wooden drawer pulls. This presented two challenges–making them
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