# US 10,309,643 B2 · Structure for seismic isolation, steel support structure, and method for seismic isolation of existing steel support structures > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,643 B2 - Document ID: US10309643B2 - Status: Granted - Kind: B2 - Application number: 15/556,415 - Filed: 2016-02-25 - Published: 2018-04-19 - Granted: 2019-06-04 - Earliest claimed: 2015-03-27 - Assignees: Mitsubishi Hitachi Power Systems, Ltd. - Applicants: Mitsubishi Hitachi Power Systems, Ltd. - Inventors: Masaki Shimono; Kunihiro Morishita; Motoki Kato; Yuji Kuroda; Tatsuya Amano; Keiichi Moritsuka - Web page: https://patentgrep.com/patent/US10309643B2 ## CPC - F22B 37/24: Supporting, suspending or setting arrangements, e.g. heat shielding - E04G 23/02: Repairing, e.g. filling cracks; Restoring; Altering; Enlarging {(compositions of filling material C04B; strengthening, widening, repairing of bridges E01D22/00; drying damp layers by temporary mechanical ventilation E04B1/7092)} - E04G 23/0218: {Increasing or restoring the load-bearing capacity of building construction elements (E04G23/0203 and E04G23/0266 take precedence)} - E04H 9/0215: {involving active or passive dynamic mass damping systems} - E04H 9/024: {Structures with steel columns and beams} - E04H 9/027: {Preventive constructional measures against earthquake damage in existing buildings} - E04B 2001/2442: {Connections with built-in weakness points} - E04B 2001/2463: {Connections to foundations} - E04B 2001/2487: {Portico type structures} - F16F 1/40: consisting of a stack of similar elements separated by non-elastic intermediate layers {(F16F9/306 takes precedence; laminated constructions to protect buildings against abnormal external influences, e.g. earthquakes, E04H9/022)} - F16F 15/08: with rubber springs {(grommet- or bushing-type resilient mountings F16F1/3732, F16F1/38); with springs made of rubber and metal (arrangement of internal-combustion or jet-propulsion units B60K5/12; mounting of propulsion plants on vessels B63H21/30; mounting of vehicle drivers' cabs B62D33/0604)} - F22B: METHODS OF STEAM GENERATION; STEAM BOILERS - E04G: SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS - E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D) - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION ## Abstract A structure for seismic isolation 10 provided on a structure plane 17 including a pair of left and right columns 5, 5 spaced apart in a horizontal direction, and a pair of upper and lower beams 7A, 7B spaced apart in a vertical direction, wherein the structure for seismic isolation comprises: a seismic isolation device 11 provided in a middle of each of the column 5, 5 to be displaced toward the beam 7A; and a horizontal rigid bearing element that is provided between an area in which the seismic isolation device 11 is provided and the beam 7B and that includes a connection beam 13 connecting the pair of columns 5, 5 and vertical braces 15L, 15R. ## Claims ### Claim 1 A method for providing a structure for seismic isolation in an intermediate layer of an existing steel support structure including an object to be supported, and a support steel frame that has a plurality of columns standing on a foundation via column bases and a plurality of beams connecting adjacent columns and that suspends and supports the object to be supported, the structure for seismic isolation being provided on a structure plane including a pair of left and right columns spaced apart in a horizontal direction, and at least one beam bridging between the pair of columns, wherein the structure for seismic isolation comprises: a seismic isolation device provided in a middle of each of the columns and displaced closer to a first beam of the at least one beam; and a horizontal tie beam connecting the pair of columns, wherein, the method comprises at least the steps of: connecting the pair of columns using the horizontal tie beam; providing a support member between the horizontal tie beam and the first beam and then cutting an area of at least one of the columns between the horizontal tie beam and the first beam; providing the seismic isolation device in the cut area; and removing the support member. ### Claim 2 (depends on 1) The method for seismic isolation of an existing steel support structure according to claim 1, wherein the object to be supported is a boiler. ### Claim 3 A method for providing a structure for seismic isolation in an intermediate layer of an existing steel support structure including an object to be supported, and a support steel frame that has a plurality of columns standing on a foundation via column bases and a plurality of beams connecting adjacent columns and that suspends and supports the object to be supported, the structure for seismic isolation being provided on a structure plane including a pair of left and right columns spaced apart in a horizontal direction, and a pair of upper and lower beams spaced apart in a vertical direction, each of the upper and lower beams bridging between the pair of columns, wherein the structure for seismic isolation comprises: a seismic isolation device provided in a middle of each of the columns; and a horizontal tie beam connecting the pair of columns, wherein the seismic isolation device is provided to be displaced closer to one of the upper and lower beams, and the horizontal tie beam is provided between the area in which the seismic isolation device is provided and the other of the upper and lower beams, wherein the structure for seismic isolation is provided on the structure plane including the pair of left and right columns and the upper and lower beams, the method comprises at least the steps of: connecting the pair of columns using the horizontal tie beam; providing a support member between the horizontal tie beam and one of the upper and lower beams and then cutting an area of at least one of the pair of left and right columns between the horizontal tie beam and the one of the upper and lower beams; providing the seismic isolation device in the cut area; and removing the support member. ### Claim 4 (depends on 3) The method for seismic isolation of an existing steel support structure according to claim 3, wherein the object to be supported is a boiler.