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Connection Capacity between Micropiles and …
Connection Capacity between Micropiles and concrete Footings: Interpretation of Test Results and Design Recommendations Jes s G mez, 1, Allen W. Cadden, , Robert P. Traylor3, Donald A. Bruce, Abstract Micropiles are used extensively for underpinning or retrofit of existing foundations. In many cases, Micropiles are installed through the existing foundation, relying on the bond between the micropile grout and the existing concrete to provide the required Connection Capacity . Because Micropiles are small-diameter elements often designed to carry large axial loads, significant shear stresses may develop between the micropile grout and the existing footing. It is therefore important to establish reasonable criteria to determine the allowable bond strength for design of such connections. It is the experience of the authors that practical design of connections between Micropiles and existing foundations is commonly done based on the individual experience of the designer, or on tests performed by the contractor to model a specific Connection type to be used in a particular project.
Connection Capacity between Micropiles and Concrete Footings: Interpretation of Test Results and Design Recommendations Jesús Gómez, P.E. 1, Allen W. Cadden, P.E.2, Robert P. Traylor3,
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