development in codes for new and existing concrete … · 2020. 8. 5. · andrÉ & marcel...
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES
fib MC2020
DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURESfib MC2020
MEMBER STATES OF MERCOSUR
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES fib MC2020
RETAINING SILOS(silo warehouses)
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURESfib MC2020
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FILLING PRESSURES IN A RETAINING SILO:
GRAINS: GLOBAL DEMAND EXPANSION INDEX SINCE 1990Base = 100
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES fib MC2020
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GRÃOS: ÍNDICES DE EXPANSÃO DA DEMANDA MUNDIAL - 1990=BASE 100
SOJA
MILHO
ARROZ
TRIGO
TOTAL
SOY
CORN
RICE
WHEAT
TOTAL
207%
108%
46%
36%
74%
40,2
51,152,7
53,554,8
56,457,8
59,260,5
61,963,2
64,6 64,965,3
38
40
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CHINA: PROJEÇÃO DA DEMANDA DE
CARNES ATÉ 2023 - KG/HAB/ANO
CHINA: MEAT DEMAND PROJECTION UNTIL 2023 – kg/person/year
2016-2023: +7,5 kg/person/year x 1,33 trillion CHINESE PEOPLE
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURESfib MC2020
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURESfib MC2020
SOY PRODUCTION IN MERCOSUR COUNTRIES, IN MILLION TONS
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SOJA: PRODUÇÃO NOS PAÍSES DO MERCOSUL EM MILHÕES DE TONELADAS
BRASIL ARGENTINA PARAGUAI URUGUAIBRAZIL ARGENTINA PARAGUAY URUGUAY
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MILHO: PRODUÇÃO NOS PAÍSES DO MERCOSUL EM MILHÕES DE TONELADAS
BRASIL ARGENTINA PARAGUAI URUGUAI
CORN PRODUCTION IN MERCOSUR COUNTRIES, IN MILLION TONS
BRAZIL ARGENTINA PARAGUAY URUGUAY
STORAGE: COMPARISON BETWEEN HARVEST AND STATIC CAPACITY IN 2016
COUNTRY
GRAIN PRODUCTION *
STORAGE CAPACITY
DEFICIT / SURPLUS
FARM CAPACITY FARM CAPACITY
MILLION TONS MILLION TONS MILLION TONS MILLION TONS %
USA 574.9 636.7 61.8 353.8 56%
BRAZIL 234.4 162 -72.4 25 15%
ARGENTINA 125.5 75.1 -50.4 16 21%
URUGUAY 6.8 6.8 0 0.3 4%
* Includes soy, corn, wheat and rice production.
OBS: It does not include the capacity in bag silos
Made by Carlos Cogo Consultoria Agroeconomica
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURESfib MC2020
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES fib MC2020
In Brazil, only a small part ofgrain production (approximately8,5%) is stored in silo-bags. Therest of the deficit is resolvedstoring in the open air, withlosses above 10%.
(La Nación, Buenos Aires)
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES fib MC2020
CORN STORED IN THE OPEN AIR – MATO GROSSO (AUGUST/2015)
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES fib MC2020
VERTICAL SILO CLUSTERSTGM - Montevideo
HORIZONTAL SILO WAREHOUSESCorporación Navíos - Nueva Palmira
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES fib MC2020
DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURESfib MC2020
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FILLING PRESSURES IN A RETAINING SILO:
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES fib MC2020
ANDRÉ & MARCEL REIMBERT:
Assuming that the internal friction angle is equal to the natural slopeangle:
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES fib MC2020
UNE 1991:
“The evaluation ofthe lateral pressureratio K should takeaccount of therestraint providedby the wall againstoutward movementof the stored solid.Where a structuralanalysis is used todemonstrate thatthe wall candisplace sufficientlyin its elastic range,a lower value of Kmay be adopted.”
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES fib MC2020
Given the width/height ratio , the grain always reaches the wall after falling down the grain slope.
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES fib MC2020
Silo warehouse duringa rice harvest seasonin Uruguay
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES fib MC2020
Considering also that the stored grainheight is a meter over the design value, wewould have a shearing stress 3 times higherand a bending moment 3.6 times higherthan the design loads.
The pressure obtained from Reimbert's passive thrust, adopting an internalfriction angle of 30° for rice, turns out to be twice the value of the originalcalculation.
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES fib MC2020
CRACKS IN SILO WAREHOUSE WALL DUE TO OVERLOADING
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DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES fib MC2020
DEVELOPMENT IN CODES FOR NEW AND EXISTING CONCRETE STRUCTURES
fib MC2020
Thank you for your attention!
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Many thanks to agro-business consultantDr. Carlos Cobos for his contribution tothis presentation
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