A wedge clamp comprises a wedge with an inclined face and an endplate with a pocket that has a mating inclined face. A beam has a curved clamping surface that engages the wedge and a lower surface that engages the endplate. The beam is clamped in the endplate by preloading the wedge into the endplate pocket.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 This invention was made with Government support under grant Award Number DE-SC0003343 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.