Base plate unit

A base plate unit, wherein the base plate unit is of an integral structure made of fiber reinforced polymer-matrix composite material, and the base plate unit comprises:

• a base plate unit body comprising at least one bearing part, each bearing part comprising a panel, a plurality of web plates extending downwards from a bottom of the panel, and bottom supports disposed at lower ends of the web plates, the web plates comprising two side-web plates at both sides of the panel and middle web plates in the middle;
• and
• foot plates disposed at both exterior sides of a bottom of the base plate unit body, and formed by extending bottoms of respective outmost side-web plates of the base plate unit body outwards horizontally;
• wherein a width F of the panel of each bearing part is 50 to 450 mm, and a thickness A of the panel is 3 to 8 mm;
• a thickness B of each of the side-web plates and the middle web plates is 4 to 7 mm;
• a thickness G of the foot plate is 3 to 7 mm, and a width E of the foot plate is 15 to 40 mm.