If Morrison Structural Lab

8/11/2019 If Morrison Structural Lab

1/10

Oyerviewof Structural

TestingFacilities

at the University of Alberta

1.1

Description

of I.F. Morisson

Structural EngineeringLaboratory

The main floor

of

the

laboratory onsists

f a tall crane

bay with adjacent

workshop, ffice,

washroom nd miscellaneousooms.

On the second

loor

are a computer oom, hreegraduate

student

ffices

and

a common oom.

The

main

crane

bay s 110

t by 62 ft

(33.5

m x 18.9m) with a clearheight

of about29 ft

(8.8

m).

Thecentre

art

ofthe floor

s a oadbed.

1.1.1 oadBed

The

oadbed,

commonly

alled he

strong floor, is a three

cell

reinforced oncrete

ox

girder

with

plan

dimensions

f 35 ft

(10.7

m)

by 70 ft

(21.3

m).

The exteriorwebsare

24 in

(610

mm)

thick, he nteriorwebs 12 n

(305

mm). The op slabof the oadbed s 2 ft

(610

mm) thick

plus

2

in

(51

mm)

of topping

total

26 in). The

opping s

unbonded ver

parts

of the loor. There

are

holes hrough he

op slabat 2 ft

(610

mm)

on

centres achway. The holesare ined with 2-112

in

(64

mm) standard

ipe

with

an inside diameter f

2.4 in

(61

mm).

The smallestdistance

between weband he centre f a hole s 6 in (152mm).

The drawings f the ab

state hat he ollowing oadsmaybe

appliedwith a

factorof safety f at

least .5.

o

Loads ctingdownward

1) Three oadsof990 kN at any

hreeadjacent oles n

the slabwith no otherdownward

oads

on he oadbedwithin a radiusof 6 m.

2)

Three

oads

of 490 kN at any hreeadjacent oLesn two or

all panels

of the slabwith no

downwardoadswithin 6 m longitudinallyn the

panels

alryingconcentratedoads

.

Loadsactingupwards

The maximumallowable oadsshallnot be sreater han

half the allowabledownward oads

described bove.

.

Uniform oads

Any combination f

480

kN/m2 downward

combination f

these

and concentratedoads

describedbove

2).

o

Horizontal loads

The maximum horizontal load at any

one

panel point is 490 kN

applied

at 9i4 mm above he

floor surfacecombined with i50 kN/m'uoward or downward uniform loads.

1.1.2Cranes

The crane n the main test areaofthe 1abhas a capacityof

10 tons

(89

kN). It spansapproximate

17 m and

is operated

by

a control box

that hangs

rom the crane.

This crane

s to be operated

only by lab technicians unless special

permission

s

given

by the head technician. A smaller

overhead

raneservices he

machine shoo area.

al.td 240

kN/m' upward uniform loads or any

o1

490 kN downwardsor

145 kN

upwards

as


2/10

The ab

s equipped ith

a battery

driven orklift

anda

propane

owered

orklift. An

air-operated

hoist

s usedaround

arge est

set-upso provide

erticalaccessor one

person.

1.1.3Machine

Shopand Concrete

atching

Facility

There s a machine

hop n

the ab that

canbe used or smallsteel abrication

ndwoodworking

jobs.

Large

obs

and

obs

requiring

precision

machiningare normally

handled

either hrough

machine hops n campus r commercialmachine hops ff campus.

An old

pan

ype

concretemixer

with a maximum

batchcapacity

f about

7 ft3 s located

t the

south-westomer

f the ab.

A high

performance

oncrete

ixer.which

hasa capacity

f mixing

fibrereinforced

oncrete, as

been

purchased.

owever,

t hasnot been nstalled

et.

1.2TestingMachines

n Structures

Laboratory

1.2.1MTS

000

6200

kN

MTS ClosedLoop

Hydraulic

System)

This is a high capacity

universal esting

machine. t is capable f applying

staticor very slow

appliedcyclic loads.

t operates

n either oad control or stroke control and

can follow an

internallygeneratedamp flmctionor an external ontrol signal.Switchingbetween oadand

stroke ontroldudnga test

s not

possible.

Capacities:

.

Compression:atedcapacity

=

6200

kN

(1a00

kip$.

The compression

ead s a spherical

seated eadof 610mm

in diameter.,

.

Tension:

ated

capacity 4000kN

(900

kips).Tensile

oadsare ransmitted

y

clevis

grips

or hydraulic

grips.

o Two setsof clevis

grips

are

available: ne

setusing 89 mm

pins

and atedat 2900

kN, and he

otherusing50 mm

pins

and

atedat 980kN.

o

The

hydraulic

grips

havea 4000

kN capacity.

nstallation r removalof the

hydraulic

grips

akesabouthalf a day.

o

LoadRanges: 67 kN, 1334

kN, 3336kN and6612kN.

In lower ranges,

oad s measured

by load cell; in upper

anges,oad s based n measured ydraulic

pressure.

or any oad

range,maximum oadcorresponds

o an output

oltage f 10V DC.

o

Stroke:Total stroke s

300 mm

(+150

mm from

zero

position).

Available anges re

25

mm,

+50

mm and

+150

mm. For anystroke ange, he

correspondingoltage

output s

+10

V DC. Note that

strokemeasureshe movement

f the

piston

and doesnot measurehe

movement fthe loadinghead

elative o thebase.

TestSpace:

The MTS 6000 s

prestressed

o a reinforced oncreteoad

bed hat s 3.66m wide by 13.1m

long, which seryes s the lower

platen

of the machine.

he load bed has bolt holes62 mm in

diameter

at 610 mm on centre n each

direction.

The bolt

holes were misalignedduring

construction nd not symmetrical bout he centreof the

machine.The actual

positions

f

the

holesareshown

n

the attached rawing.

.

Height:7300mm with the am at themidpointof its travel.


3/10

.

Width between olumns:

1700mm

between olumn

baseconnections.

829mm betvr'een

columns.

1.2.2MTS 1000

1000

N MTS

Closed oop

Hydraulic

System)

It

is a universal estingmachine

which

can apply static or slowly appliedcyclic

loading n

tension r compression.

t canoperate

n either oador stroke ontroland s capable

f switching

from one o theotherduringatest.The oad s measured ith a built-in oadcell.

The MTS1000

and he MTS2700

share

he same onfol

panel.

Only one of these

machines an

be

used

at any

ime.Loadand

stroke anges

reselected

ith

plug-in

caftridges.

Capacities:

.

Comprglqen nd lgnsiap:

1000 N

o

Load Ranses:

100

kN,

+200

kN,

+500

kN and

+1000

kN all conesponding

o output

voltagesf+l0 V DC.

.

Stroke:Maximum shoke s

300 mm

(+150

mm).

Availablestroke anges

are

+100

mm,

+50mm,+20mm and+10mm. All stroke anges orrespondo anoutputvoltage f +10V

DC.

TestSpace:

o

Height:Clear erticalspaces 2057

mm withoutspecimen

rips;

with

grips

s 1250mm.

(With

carefu1

anoeuvring, 1400mm o 1500mm might be itted nto the machine.)

o

Clear

horizontal

istances etween olumns

le

406 mm by 711mm.

1.2.3MTS 2700

This is a compressionestingmachinewhich can apply staticor

lowly applied

cyclic oads n

compression.t is intended rimarily for testingconcrete ylindersand

prisms.

The maximum

bearing apacity n the spherically eated ompression

laten

s 200 MPa. t can be

operated

n

load or strokecontrol and can switch from one to the

other durins a test. Load is basedon

measured

ydraulic

ressure.

Capacities

o

Compression:

ated

capacity:2670 kN in compression.

.

Load Ranqes:1200

kN and

2670

kN. Maxirnum

compressiveoad conespondso a

voltage utputof+10 V DC.

TestSpace:

Ma,ximum efiical clearances 1000mm. A set of spacers re used o accommodatemaller

specimens.he spherically eated ompression

laten onforms o ASTM standardsor test 100

mm and 150mm diameter oncrete ylinders.

1.2.4 egasus

atigue oadingSystem

This

atigue oading ystem onsists f two

pumps

otalling

140

gpm,servocontrolvalves, oses

and atigue

atedactuators.t is necessaryo build a load

rame

o reactagainsthe forces rom

the actuators.

oadmeasured ith loadcell.


4/10

Rams:Two

at 530kN capacity,

50 mm

stoke;and wo at 340kN capacity, 50

mm stroke.

Loading ates:

variable.The rate

of loading

depends n

the amplitude

f the stroke

cycle and

alsomustbe choseno avoid

esonance

ith test rames ndspecimens. typical

ate s 5 Hz at

25

mm deflection.

The

Pegasusystem's

ump

andjacksare

eakingandmayrequire omplete verhaul.

1.2.5NewX'lex-Frame

A reaction ramesystem

etup along he

eastwal1, all Flex-Frame, an be used or

simple est

(such

as ight beam ests) p

to 600kN.

1.2.6Hydraulic Rams

There s a wide

assoftment f hydraulic

acks

available n the structuresaboratory.

Someof

these re isted n Table1. Most have

nterchangeableose ouplers.

1.2.7HydraulicPumpsand LoadMaintainers

a) Hydraulic Purnps

Thereare our hand-operatedumps

and wo electrically perated

ump

n

the laboratory. he

electronic

ump

hasa reservoir

fabout 4litres anda maximum

ressure

fabout 55 MPa

8000

psi).

lthoughl is rated t

10000

si .

b) Air on Hydraulic Oil PressureSystems

Blue

Panels)

There are two

"air

over

oil" hydrauiic

pressure

ystems,

enerally

eferred

o as the-

blue

paneis".

-

Each

panel

hasan air driven

pump.

The

pumps

axe

drivenoff of the 100

psi

shopair

supply

hose. hepumps ressurizeydraulicluid to a maximum ressuref 10,000 si.

-

Each

panel

has one air

pressure

upply.One

panel

has ive

hydraulicpressure

utlets; he

otherhas wo.

-

The outletscan be controlled o deliver

equal

pressures

y openingboth outlet valvesand

controllinghe air

pressure

upply

with the egulator. nder

hese onditionshe estwould

be

"loadcontrolled"n that he hydraulic

ressure

ouldbe keptconstant.

-

While t is

possible

o

control he outlet

pressure

n each

outlet separatelyhis is

sometimes

difficult to do. If

you

require ndependentonffol at

two different

pressures,ou

would

be

better ffusing two control

panels

with different ir supply

pressues

n

each

panel.

Outlet pressuesare measuredwith mechanicalpressuregaugesand can provide an

independent

on-electronicheck

ofthe

ack

oad.

-

Pressureeadings uringunloading

tages re naccurate

nd shouldnot be used o determine

the oadon the sfucture.


5/10


6/10

1.5Computers

and Instrumentations

TheStructural

Groupsubscribes

ite icences

f finite element

rograms

f ABAQUS,

SAP2000,

S-Frame, tc. o be used

n PC's. You

will needan access ccount o use

ABAQUS.

The CNS

ComputerLabs in NRE

2-117 and

NRE 2-718 are available or students

who need o use

SAP2000 ndS-Frame

tructural nalysis

nddesign

rograms.

A numberof PC's

arealso

ocated n the

main loor of the structuresab.These omputets re

usedmainly or control

ofthe data

acquisition

ystems. hereare hreedataacquisition

ystems

cunentlybeing

equippedn

the I.F. Morrison

Structural ab, wo HBM, MGC

Plus system nd

oneHBM,

Quantum

X system.

Eachsystem

onsists f 16 high evel

(DC)

channels

nd48 low

level

strain)

hannels.

Thereare wo camera

trainmeasuring

ystems, achwith four setsof camera,

n the ab.A

total

of six lens are

equipped

or the system.

The systems

ave he capacity

of measuring

train

distributionsna deformed

pecimen.

There s an mpact

Drop

Weight)Testing

Machine quipped

ith two high

speed amerasn the

Laboratory.

1.6Technical taff

Two technicians re employed

by the Deparlmento

work in the Structural

aboratory. he

curent staff are Greg Miller

(Senior

Technician)

and Cameron West. Studentsdoing

experimental

esearch

houldcontactGreg

Mil1er

2-37

4) well in advance f when hey expect

to do their work. Meetings o discuss

cheduling re held

when needed. loor space,machine

time and technician ime must be scheduled

ell in

advance. echnicalhelp in the area

of

electronicss availablerom DaleLathe

andPeterAltobelli

ocatedn NRE 7-130.

1.7Safety

In the structuralaboratory, tudents ork

with

relatively ittle supervision, aveaccesso a wide

varietyof

power

ools, and work with large orces n sfuctures

whosebehaviour

s not always

understood.n thesecircumstances,t is

particularly

mportant

hat a high

level of safetybe

maintained. summary

of the safety ules or the 1ab

s

posted

near he north overhead oor.

Greg

Miller is the inal authoritywith respect

o safety

ractices.

e

will advise

any user f their

procedures

o not meet he requirements.

is

decisions

with respect o matters

of

safetyare

final. You will be ssued setof Lab Rules. t is

your

responsibility

o readand ollow the Lab

Rules.Failure o do so could esult n the ossoflab use

privileges.


7/10

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If Morrison Structural Lab

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