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Earthquake Resistant Expansion Joint using Hinge Finger Type

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Presentation on theme: "Earthquake Resistant Expansion Joint using Hinge Finger Type"— Presentation transcript:

1 Earthquake Resistant Expansion Joint using Hinge Finger Type
We make the happy world ! ILWONTECH Co., Ltd. ILWON (주)일원티이씨

2 1.Status of earthquake Damage 1)Geological earthquake
·Earthquake zone within the plate -USA: Northeastern area -China: Jaeseong Earthquake in 1975 Tangshan Earthquake in 1976 ·Earthquake zone on the plate boundary -New Zealand, USA, Japan (Earthquake-resistant advanced countries) ILWONTECH Co., Ltd. (주)일원티이씨

3 2) Major earthquakes of the world (since 1900’s)
(Over 10,000 casualty) Order Date of occurrence Area No. of casualty (people) Magnitude 1 Northern area, Pakistan 86,000 7.6 2 Sumatra, Indonesia 283,106 9.0 3 Southern area, Iran 31,000 6.6 4 Gujarat , India 20,085 7.7 5 Izmit, Turkey 15,657 7.4 6 Rasht, Iran 45,000 7 Armenia (the Soviet Union) 30,000 6.8 8 Tangshan, China 242,000 9 Peru 66,000 7.8 10 Erzincan, Turkey 23,000 8.0 11 Kanto, Japan 143,000 8.2 12 Kansu, China 180,000 8.5 13 Messina, Italy 120,000 7.5 ILWONTECH Co., Ltd. (주)일원티이씨

4 3) Example of damaged bridge by earthquake
◈ Kobe earthquake, Japan -Date of occurrence : -Casualty : 6,300 people -Wounded : 35,000 people -Magnitude : 7.2 ILWONTECH Co., Ltd. (주)일원티이씨

5 ◈ Loma Prieta earthquake
Collapse of the upper part of the steel trust bridge (Oakland Bay Bridge) - Year of occurrence : 1989 - Magnitude : 7.1 - Among 4,250 bridges ·Minor damage: 89 ·Major damage: 11 Breakdown of the punching in the upper structure (State Highway Bridge) ILWONTECH Co., Ltd. (주)일원티이씨

6 ◈ Northridge earthquake
Antelope Valley Freeway - Date of occurrence : Jan 17,1994 - Casualty : 57 people - Wounded : 90,000 people Santa Monica Freeway ILWONTECH Co., Ltd. (주)일원티이씨

7 2. Improvement of aseismatic performance in Bridges
1) Standard of earthquake-resistant design Road standard specifications, Ministry of Construction, 1992 Earthquake resistant design criteria, Ministry of construction & Transportation, 1997 Road bridge design criteria, Ministry of construction & Transportation, 2000 Road bridge design criteria, Ministry of construction & Transportation, 2005 ILWONTECH Co., Ltd. (주)일원티이씨

8 2) Basic policy of the earthquake-resistant design
Purpose of earthquake-resistant design Securing the quake-proof ability in order to minimize the damage of the bridge caused by the earthquake Basic concept of earthquake-resistant design criteria Minimizing casualties. Allowing partial damage in bridge members but preventing entire collapse in case of earthquakes. Making it possible to perform the basic function of the bridge in case of earthquake. The Design Criteria can be applied to all area in South Korea. A creative work can be acknowledged to develop more advanced design even though it does not follow the rule. ILWONTECH Co.,Ltd. (주)일원티이씨

9 3) Aseismatic level of the Road Bridge and seismic design
Average cycle of occurrence of seismic design First class Bridges Bridges on highway, driveway, special city road, metropolitan road or general local highway Bridge on roads built for preventing disaster in local area, city and province and important bridges considered in daily planned traffic volume Elevated bridge passing over the road building first class bridge against the earthquake 1000 years Second class - Bridges excluded in the first class of the aseismatic level 500 years ILWONTECH Co., Ltd. (주)일원티이씨

10 4) Response Correction Factor In case of satisfying all the design requirements for the earthquake-resistant design, designed seismic force for each member and joint part of bridge is the value of the elastic seismic force divided by the response correction factor., In case of the lower structure, however, the longitudinal force and shearing force are not divided by response correction factor. Lower structure R Connection part (1) R Box frame type pier Abutment of the upper structure Steel concrete pile frame (Bent) 1. In case of using vertical pile only 2. In case of using more than one batter pile Expansion within a span of the upper structure Single column Column, pier or pile frame and cab beam or upper structure Steel or composite steel or concrete pile frame 1. In case of using vertical pile only 2. In case of using more than one batter pile Column or pier & base Multiple frame Note : (1) The connection part means the device delivering the shearing force and compressive force between members and includes bridge bearings and shearing key. At this time, the response correction factor is applied to the elastic seismic force into the working direction. ILWONTECH Co., Ltd. (주)일원티이씨

11 5) Change of the concept in earthquake-resistant design
The existing earthquake-resistant design : increasing the strength of the structure Beginning of the modern earthquake resistant design caused by Messina earthquake in Italy with magnitude 7.5 in 1908 Building the structure stronger can resist from the horizontal load generated by earthquakes Aiming the prevention of collapse Allowing the structural damage Increasing seismic movement of the inside of the structure A new earthquake-resistant design : controlling the seismic movement of the structure Seismic movement control system reducing the required strength by using seismic isolation system or energy dissipation system ILWONTECH Co., Ltd. (주)일원티이씨

12 6) Earthquake-proof system for bridges
◈ Approach of the earthquake-proof system Earthquake is the energetic phenomenon and the earthquake energy concentrate on the fixed structure giving the damage The Large plate displacement Structural deformation Damage Earthquake Induced energy ILWONTECH Co., Ltd. (주)일원티이씨

13 Damage of Rahmen tie beam pier Upper plate falling down
Damage of the expansion joint and anti-falling pin Damage of Rahmen pier (fixed axis) Damage of Rahmen tie beam pier Upper plate falling down ILWONTECH Co., Ltd. (주)일원티이씨

14 ◈ Application of aseismatic system
The system prevents the earthquake and terminates its energy. It makes smaller energy come into the structure reliving the remaining energy. Plate displacement Induced energy ILWONTECH Co., Ltd. (주)일원티이씨

15 7)Development Status for the seismic prevention system ◈Bearing system – rubber bearing
· Long cyclic function : Flexible horizontal transformation ability Changing up to 600% in rubber shearing deformation · Vertical load support function: sufficient load supporting ability Supporting up to maximum 147 Mpa/cm2 ILWONTECH Co., Ltd. (주)일원티이씨

16 ◈Supporting device - LRB, HDR
· Seismic isolation support integrated with damping function · Support injecting lead with excellent plasticity · Support using high damping rubber ILWONTECH Co., Ltd. (주)일원티이씨

17 ◈Damper ·Oil damper ·Viscosity damper Using low viscosity fluid
Upper Plate Structure Measuring Device Quake Isolation Device (Friction Bearing, Lead Rubber Bearing) Reaction energy fixed anchor Quick Release Jack ·Oil damper Using low viscosity fluid Low dependency on temperature Complicated inner structure ·Viscosity damper Using high viscosity fluid High dependency on temperature Simple inner structure ILWONTECH Co., Ltd. (주)일원티이씨

18 ◈Device preventing the bridge falling
Expansion Joint Upper Plate Cable type Bridge falling block system ·Cable confining device from SEEE company Buffer Bearing pier Spring Stopping Plate Connection Cable (PC Cable) Protection Cab Nut Mansion Buffering (Bearing plate + Buffer packing) Cladding material (Polyethylene resin) ILWONTECH Co., Ltd. (주)일원티이씨

19 3. Earthquake Resistant Expansion Joint (ERJ) of Finger type structure by using Hinge
- Use : long-span vertical expansion joint - Expansion : 300 ~ 800mm Patent NO , NO Assigned to Technical Innovation Class “A” in the propriety evaluation of new technology idea ILWONTECH Co., Ltd. (주)일원티이씨

20 2) ERJ (Earthquake Resistant Expansion Joint) Deal drawing
(Rubber Plate) ILWONTECH Co., Ltd. (주)일원티이씨

21 3) ERJ standard cross sectional view
ILWONTECH Co., Ltd. (주)일원티이씨

22 3) ERJ ground plan Direction of a vehicle course of a vehicle
ILWONTECH Co., Ltd. (주)일원티이씨

23 4) Characteristics of ERJ movement
Longitudinal movement Transversal movement Up& Down movement ILWONTECH Co., Ltd. (주)일원티이씨

24 5) Detailed drawing of the Rubber Seal in the lower part
Bonding picture Installation picture ILWONTECH Co., Ltd. (주)일원티이씨

25 6) Comparison Table of earthquake-resistant expansion joints
Classification Earthquake-resistant expansion joints (ILWON) (Other companies) Structure Simple Complicated Movement feature Enough to move into three directions of X, Y, and Z axles Limited up & down movement into Z axle Allow the movement into X and Y axles Maintenance -Partial repair due to its unit structure -can be replaced the Rubber Seal only from the lower laying gap without any traffic control - No traffic control - Partial repair is impossible due to its monolithic structure - Full traffic control Applicability Easy to construct due to its simple structure - Requires heavy equipment for the installation due to its monolithic structure Ride quality Satisfactory with its Finger type structure - Heavy noise with its discontinuous structural feature reducing the ride quality Product price (Expansion 400mm) Low price , about USD 9,700 / meter High price , about 17,100 / meter ILWONTECH Co., Ltd. (주)일원티이씨

26 Thank you so much!! ILWONTECH Co., Ltd. (주)일원티이씨

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