초록 ▼

Improved connections of preformed concrete construction elements wherein one or more metal pins, of any preferred cross-sectional shape, are cast in place, or grouted, extending into each of two elements to be connected, with an elastic grommet disposed between a portion of each pin, in an area on e

Improved connections of preformed concrete construction elements wherein one or more metal pins, of any preferred cross-sectional shape, are cast in place, or grouted, extending into each of two elements to be connected, with an elastic grommet disposed between a portion of each pin, in an area on each pin nearest the joint, and the surrounding concrete or grout, whereby the load transfer capacity of the connection is increased about threefold.

대표청구항 ▼

An improved connection of precast concrete elements comprising at least two precast cementitious concrete structural elements disposed in close load transferring positions, at least one metal pin extending from within one of said elements to within the second of said elements, said metal pin being h

An improved connection of precast concrete elements comprising at least two precast cementitious concrete structural elements disposed in close load transferring positions, at least one metal pin extending from within one of said elements to within the second of said elements, said metal pin being held in place in each of said elements by a structure of the group consisting of (1) being cast in place in said cementitious concrete element, (2) being disposed in a grout hole which has been filled with a cementitious grout and (3) being disposed in a pocket formed behind a slotted plate affixed to said element which restricts movement in all but one direction, said metal pin being held in place in at least one of said elements by a structure of the class consisting of (1) and (2), and said metal pin having an elastic grommet disposed between a portion of the pin and the surrounding cementitious concrete or grout in one of the elements wherein said pin is held in place by a structure of the class consisting of (1) and (2), said elastic grommet being disposed on the portion of said pin immediately adjacent the joint between said two elements and between a portion of the pin and the adjacent cementitious concrete or grout through which a load is to be transferred from one element to the other.