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Design Method of a New Type of Expansive Stressed Grouted Clamp

Considering the different mechanism of self-stress formation, a new type of structure was proposed for expansive grouted clamp, which is used for underwater repair on steel tubular. Since the structure is changed totally, the corresponding design method should be modified. This paper summarizes a design method of the new type of expansive stressed grouted clamp and sorts out a set of practical design procedure for the new structure. The core principles of the design method are based on the checks on slip capacity, member crushing and structural strength, associated with the experiment data and previous design experience as reference. An example of such clamp design for repairing a horizontal brace of a jacket platform is also introduced to describe how this method works.