Systems and methods for retrofitting a building for increased earthquake resistance

摘要

A system for retrofitting a building to make the building more earthquake resistant. The system includes a seismically-tuned (S-T) frame. The S-T frame is configured to absorb a first portion of the forces imparted by an earthquake and transfer a second portion of the forces in a distributed manner to areas of a building such that they can be better withstood. The system also includes a rigid truss diaphragm. The rigid truss diaphragm is connected to the S-T frame and configured to transfer the second portion of the forces imparted by an earthquake to an overlying structure.

主权项

1. A system for retrofitting a building to make the building more earthquake resistant, the system comprising:
a seismically-tuned frame;
configured to:
absorb a first portion of the forces imparted by an earthquake; andtransfer a second portion of the forces in a distributed manner to areas of a building such that they can be better withstood; andincludes:
an articulated frame; anda concentric brace configured to prevent deformation of the articulated frame beyond a predetermined amount; a rigid truss diaphragm, wherein the rigid truss diaphragm is:
connected to the seismically-tuned frame; andconfigured to transfer the second portion of the forces imparted by an earthquake to an overlying structure; one or more friction bolted connections, wherein the one or more fiction bolted connections:
are configured to:
connect the seismically-tuned frame to the rigid truss diaphragm; andact as a regular non-slip connection until loads are applied in excess of a pre-determined threshold; andincludes:
an attachment permanently attached to the articulated frame;a second attachment configured to secure the rigid truss diaphragm;a third attachment configured to secure the concentric brace; anda bolt configured to increase the compression between the first attachment, second attachment and third attachment; a transition configured to connect the rigid truss diaphragm to the overlying structure.